Sealing arrangement in rotating control valve of pressure fluid-operated percussion device

The invention relates to a sealing arrangement in a rotating control valve of a pressure fluid-operated percussion device, to which percussion device a tool is mountable movable in its longitudinal direction, the percussion device containing a work chamber and a transmission piston mounted movable to compress the tool suddenly to generate a stress pulse to the tool, inlet and outlet channels for conducting pressure fluid to the percussion device and away from it, and a control valve having a rotating switch member with channels to connect inlet and outlet channels through the channels of the switch member to alternately conduct the pressure fluid through the channels to the work chamber and, correspondingly, away from the work chamber, and in the inlet channel of the pressure fluid at the switch member side end thereof at least one sealing sleeve for the purpose of sealing the inlet channel to the switch member. In the arrangement, the sealing sleeve is mounted obliquely to the surface of the switch member and the switch member side surface of the sealing sleeve is essentially in the shape of the switch member surface.

DEVICE AND METHOD FOR ROCK AND - CONCRETE MACHINING

The invention concerns a hydraulic, valveless impact mechanism for use in equipment for the machining of at least one of rock and concrete comprising a machine housing () with a cylinder bore, a piston () mounted such that it moves within this bore arranged to carry out when in operation repetitive reciprocating motion relative to the machine housing and in this way to deliver impact directly or indirectly on a tool connectable to the equipment for machining at least one of rock and concrete, and where the piston includes a driving part () that separates a first drive chamber () and a second drive chamber (), with an effective volume that is greater than that of the first drive chamber. The impact mechanism comprises further a starting means arranged such that it creates for a short duration, during an initial pressurisation of the impact mechanism, a connection between the second drive chamber and the first drive chamber, where the said connection can remain during one complete stroke cycle, in order in this way to set the piston into self-oscillation and avoid the piston remaining stationary at an equilibrium position. Furthermore, the invention concerns a rock drill with such an impact mechanism, and a rock drill rig comprising such a rock drill, and further a hydraulic release valve for the start of valveless hydraulic impact mechanisms. The invention concerns in addition to this a starting method for a hydraulic valveless impact mechanism. 1. A hydraulic , valveless impact mechanism for use in equipment for machining at least one of rock and concrete comprising a machine housing with a cylinder bore , a movable piston mounted in this bore and arranged to carry out repetitively reciprocating motion during operation relative to the machine housing , and in this way to deliver impacts directly or indirectly against a tool connectable to the equipment for machining at least one of rock and concrete , and where the piston includes a driving part that separates a ...

DEVICE FOR ROCK AND - CONCRETE MACHINING

The invention concerns a hydraulic striking tool for application in rock and/or concrete cutting equipment containing a machine housing () with a cylinder () with a moveably mounted piston () which during operation performs a repetitive forward and backward movement relative to the machine housing () and directly or indirectly strike a rock and/or concrete cutting tool (), and where the piston () includes a driving part () which separates a first () and a second () driving chamber formed between the piston () and the machine housing () and where these driving chambers are arranged to include a pressurised working fluid during operation. The total volume V of the first and second driving chambers is inversely proportional dimensioned to the square of a for the striking tool recommended maximal pressure p, as well as proportional, by a proportionality constant k within the interval 5.3-21.0, to the product of the pistons energy E during the strike against the tool and compression module β of the working fluid. 1. A hydraulic impact mechanism for use in equipment for at least one of rock and concrete machining comprising a machine housing with a cylinder bore , a piston mounted to move within this bore and arranged to carry out repetitively reciprocating motion relative to the machine housing during operation and in this way to deliver impacts directly or indirectly onto a tool connectable to the equipment for machining at least one of rock and concrete , and where the piston includes a driving part that separates a first and a second drive chamber formed between the piston and the machine housing and where these drive chambers are arranged such that they include during operation a driving medium under pressure , and where , further , the machine housing includes channels that open out into the cylinder bore and that are arranged such that they include the driving medium during operation , and that with the aid of the piston , during its motion in the cylinder bore , ...

IMPACT MECHANISM, ROCK DRILL AND DRILL RIG COMPRISING SUCH IMPACT MECHANISM

The invention relates to an impact mechanism comprising a housing () with at least two stroke adjustment channels (); an adjustment arrangement () with at least two adjustment pin channels () arranged to interact in a manner that can be selected with the stroke adjustment channels (); and a hammer piston () that performs reciprocating motion in the housing () in order to impact repetitively onto an anvil (), which hammer piston () has a stroke length that can be selected with the aid of adjustment pin channels () and the stroke adjustment channels (). According to the invention, the adjustment arrangement () comprises an elastic element () arranged to maintain the adjustment arrangement () in place for the stroke length that has been selected; and an operating means () arranged to select adjustment pin channel () and thus the stroke length of the hammer piston (). 1. An impact mechanism comprising a housing with at least two stroke adjustment channels; an adjustment arrangement with at least two adjustment pin channels arranged for freely chosen interaction with the stroke adjustment channels; and a hammer piston that performs reciprocating motion in the housing in order to repetitively impact onto an anvil , which hammer piston has a stroke length that can be selected with the aid of adjustment pin channels and the stroke adjustment channels , wherein the adjustment arrangement comprises an elastic element arranged to maintain the adjustment arrangement in position for the stroke length that has been selected; and an operating means arranged to select adjustment pin channel and thus the stroke length of the hammer piston.2. The impact mechanism according to claim 1 , wherein the operating means is an outer end of the adjustment arrangement.3. The impact mechanism according to claim 1 , wherein the operating means is arranged to select adjustment pin channel by means of rotation of the operating means.4. The impact mechanism according to claim 1 , wherein the ...

HAMMER DRILL

A hammer drill having a motor mounted within a body and an output spindle; a tool holder mounted on the body capable of holding a cutting tool; a hammer mechanism having a piston; a reciprocating drive for converting rotary movement of the motor into reciprocating movement of the piston; a ram reciprocatingly driven by the piston via an air spring to strike a cutting tool held in the tool holder, the hammer mechanism performing one hammer cycle each time the ram strikes a cutting tool during normal use; an air replenishment mechanism capable of refreshing the air spring during certain time periods during normal use; the air replenishment mechanism capable of being adjusted to refresh the air spring during time periods within the hammer cycle and/or the system allows different volumes of air into or out of the air spring during the refreshment time periods. 1. A hammer drill comprising:a body;a motor mounted within the body having an output spindle;a tool holder mounted on the body, the tool holder being capable of holding a cutting tool;a hammer mechanism comprising:a piston slideably mounted within the body;a reciprocating drive mechanism mounted within the body which, when the motor is activated, converts the rotary movement of the spindle of the motor into a reciprocating movement of the piston within the body;a ram slideably mounted within the body which is reciprocatingly driven by the reciprocating movement of the piston via an air spring to repetitively strike a cutting tool when held by the tool holder, the hammer mechanism performing one hammer cycle each time the ram strikes a cutting tool during normal use;an air replenishment mechanism which is capable of refreshing the air spring during certain time periods within the hammer cycle during normal use;characterized in that the air replenishment mechanism is capable of being adjusted so that it refreshes the air spring during different time periods within the hammer cycle during normal use and/or it allows ...

HAMMER DIRLL

A hammer drill including a cylinder; a piston and a ram mounted within the cylinder; a drive mechanism for converting rotation of a motor into reciprocating movement of the piston; a ram driven by the piston via an air spring; at least two air entry points formed through the wall of the cylinder in different axial positions along the length of the cylinder, each of which are capable of replenishing the air spring; the ram striking a tool in a tool holder; wherein there is further provided a selector mechanism which selectively opens and close the air entry points; characterized in that the selector mechanism opens only one air entry point at any one time during normal use, the selector mechanism closing all other air entry points, each of the air entry point capable of replenishing the air spring during normal use when opened by the selector mechanism. 1. A hammer drill comprising:a body;a cylinder mounted within the body;a piston slideably mounted within the cylinder;a motor mounted within the body having an output spindle;a reciprocating drive mechanism mounted within the body which, when the motor is activated, converts the rotary movement of the spindle of the motor into a reciprocating movement of the piston within the cylinder;a ram slideably mounted within the cylinder which is reciprocatingly driven by the reciprocating movement of the piston via an air spring;at least two air entry points formed through the wall of the cylinder in different axial positions along the length of the cylinder, each of which are capable of replenishing the air spring;a tool holder mounted on the body, the tool holder being capable of holding a cutting tool which, during normal use, is repetitively struck by the reciprocating ram;wherein there is further provided a selector mechanism which selectively opens and close the air entry points;characterized in that the selector mechanism opens only one air entry point at any one time during normal use, the selector mechanism closing ...

ROTARY-PERCUSSIVE HYDRAULIC PERFORATOR PROVIDED WITH A CONTROL CHAMBER PERMANENTLY CONNECTED TO A LOW-PRESSURE ACCUMULATOR

The rotary percussive hydraulic perforator comprises a body; a fitting; a striking piston configured to strike the fitting; a stop piston including a front face facing the fitting and a rear face situated opposite to a rear wall of a cavity receiving the piston stop; and a main hydraulic supply circuit including a high pressure fluid supply conduit and a low pressure fluid return conduit. The body and the stop piston delimit a first control chamber permanently connected to the high pressure fluid supply conduit and configured to bias the stop piston forwards, and a second control chamber configured to bias the stop piston forwards and permanently connected to a low pressure accumulator connected to the low pressure fluid return conduit. 1. A rotary percussive hydraulic perforator comprising:a body,a fitting intended to be coupled to at least one drilling bar equipped with a tool,a striking piston slidably mounted inside the body along a striking axis and configured to strike the fitting,a stop piston which is slidably mounted in a cavity of the body along an axis of displacement substantially parallel to the striking axis, the stop piston including a front face facing the fitting and intended to position the fitting in a predetermined equilibrium position with respect to the striking piston, and a rear face opposite to the face front and situated opposite to a rear wall of the cavity, anda main hydraulic supply circuit configured to control an alternating sliding of the striking piston along the striking axis and to control a sliding of the stop piston along the displacement axis, the main hydraulic supply circuit including a high pressure fluid supply conduit and a low pressure fluid return conduit,the body and the stop piston delimiting at least partially a first control chamber permanently connected to the high pressure fluid supply conduit and configured to bias the stop piston forwards, the rotary percussive hydraulic perforator further comprising a connecting ...

BREAKING DEVICE

A breaking device includes a frame, an impact device having a pressure chamber with a rear pressure chamber and a front pressure chamber. The breaking device further includes a first low pressure port at the rear pressure chamber, a first low pressure channel and a first low pressure accumulator connected to the first low pressure channel. The breaking device further includes a second low pressure port at the rear pressure chamber substantially opposite to the first low pressure port, second low pressure channel and a second low pressure accumulator connected to the second low pressure channel. The first low pressure accumulator and the second low pressure accumulator are arranged at the outer circumference of the frame of the breaking device at different positions in the axial direction of the breaking device. 1. A breaking device comprising:a frame;an impact device including a pressure chamber and a percussion piston, which is an elongated object contributing to divide the pressure chamber into a rear pressure chamber and a front pressure chamber;at least one first low pressure port in the frame at the rear pressure chamber and at least one first low pressure channel extending from the at least one first low pressure port to an outer circumference of the frame of the breaking device;at least one first low pressure accumulator connected to the at least one first low pressure channel at the outer circumference of the frame of the breaking device;at least one second low pressure port in the frame at the rear pressure chamber substantially opposite to the at least one first low pressure port;at least one second low pressure channel extending from the at least one second low pressure port to the outer circumference of the frame of the breaking device; andat least one second low pressure accumulator connected to the at least one second low pressure channel at the outer circumference of the frame of the breaking device, wherein the at least one second low pressure ...

HYDRAULIC HAMMERING DEVICE

A hydraulic hammering device that uses a scheme in which a front chamber is switched into communication with a low-pressure circuit when a piston advances, wherein occurrences of “galling” to the piston at a sliding contact portion with a front-chamber liner is reduced. The front chamber has the front-chamber liner fitted to an inner surface of a cylinder. A hydraulic chamber space communicating with the front chamber and filled with hydraulic oil is formed as a cushion chamber on the inner peripheral surface of a rear portion of the front-chamber liner. The cushion chamber has a second drain circuit (from first end face grooves to slits to second end face grooves, which is provided separately from a drain circuit that guides the hydraulic fluid passing through a liner bearing of the front-chamber liner to the low-pressure circuit. 1. A hydraulic hammering device comprising:a piston slidably fitted into a cylinder, the piston being configured to advance and retract to hammer a rod for hammering;a front chamber and a rear chamber that are defined between an outer peripheral surface of the piston and an inner peripheral surface of the cylinder and arranged separated from each other in the front and rear direction; anda switching valve mechanism configured to switch the front chamber into communication with a low pressure circuit when the piston advances and to supply and discharge hydraulic oil so that an advance and a retraction of the piston can be repeated,wherein the front chamber has a front-chamber liner that is fitted to an inner surface of the cylinder,a hydraulic chamber space is formed to the front-chamber liner as a cushion chamber, the hydraulic chamber space communicating with the front chamber to be filled with hydraulic oil, andthe cushion chamber has a second drain circuit that is formed separately from a drain circuit configured to guide hydraulic oil passing a liner bearing section of the front-chamber liner to the low pressure circuit and that ...

VALVE

The present invention relates to a valve for a hydraulically operated percussion mechanism having a main valve () which is in the form of a rotary slide valve having a rotary slide. In order to reduce the installation space and the production costs of such valves, it is proposed according to the invention that the rotary slide is configured as a receiving housing which receives a valve element in the form of a secondary valve (). Furthermore, the invention relates to the use of a valve which is arranged on a percussion mechanism of a hydraulic hammer. 1. A valve for a hydraulically operated impact mechanism having a main valve that is realized as a rotary slide valve with a rotary slide , wherein the rotary slide is developed as a receiving housing that receives a valve element that is realized as a secondary valve.2. The valve as claimed in claim 1 , wherein the secondary valve is realized as a rotary slide valve claim 1 , a longitudinal slide valve or a seat valve.3. The valve as claimed in claim 1 , wherein the main valve is actuatable manually and the secondary valve is actuatable manually or hydraulically.4. The valve as claimed in claim 1 , wherein the main valve has two switching functions.5. The valve as claimed in claim 4 , wherein the stroke of the impact piston is modifiable by a first switching function of the main valve claim 4 , and it is determinable by a second switching function whether the impact mechanism carries out further impact strokes after the occurrence of at least one no-load stroke.6. The valve as claimed in claim 4 , wherein one switching position each of a first switching function is coupled with one switching position each of a second switching function.7. The valve as claimed in claim 6 , wherein the switching positions of the switching functions are coupled such that when the impact mechanism carries out impact strokes with a long stroke as a result of the first switching position of the first switching function claim 6 , the impact ...

Method and Device for Monitoring the Ramming of a Ram Post into the Ground

The invention relates to a method for monitoring the ramming of a ram post () into the ground. A succession of blows are struck on the ram post () via an impact driving device (), causing the ram post () to be rammed into the ground. Parameters for the load-bearing capacity of the ram post () in the ground are ascertained during the ramming of the ram post () via a monitoring unit (). 111311114. Method for monitoring the ramming of a ram post () into the ground , characterized in that a succession of blows are struck on the ram post () via an impact driving device () , causing the ram post () to be rammed into the ground , and that parameters for the load-bearing capacity of the ram post () in the ground are obtained during the ramming of the ram post () via a monitoring unit ().21. Method according to claim 1 , characterized in that the number of blows that are required to ram the ram post () to a pre-determined target depth in the ground is obtained as a parameter for the load-bearing capacity.31. Method according to claim 1 , characterized in that the distance to which the ram post () is rammed into the ground with a pre-determined number of blows is determined as a parameter for the load-bearing capacity.41. Method according to claim 2 , characterized in that the force exerted during the individual blows on the ram post () is constant.511. Method according to claim 1 , characterized in that the forces exerted on the ram post () during the individual blows are obtained as parameters for the load-bearing capacity and the penetration depth of the ram post () into the ground brought about by the respective blows is determined.6. Method according to claim 1 , characterized in that the parameters that are obtained are compared to reference values.713111411. Device for monitoring the ramming of a ram post () into the ground claim 1 , with an impact driving device () claim 1 , via which a succession of blows is struck on the ram post () claim 1 , causing the ram post () ...

Arrangement for controlling automated operation mode

A method for controlling an automated drilling process on a work machine includes the steps of obtaining, from at least one input, data determining operations of the work machine; generating reference data based on the data determining previous operations of the work machine in substantially the same area; detecting a region of interest in the reference data; and controlling, in response to the work machine or its drilling process approaching a point corresponding to the region of interest in the reference data, the work machine to provide an operator with an option to manually assist the operations of the work machine at the point.

Hydraulic Hammering Device

A hydraulic hammering device enables an auto-stroke mechanism and an idle strike prevention mechanism to coexist with a simple circuit configuration. The device includes a first control valve to control advancing and retracting movements of a piston, an auto-stroke mechanism and an idle strike prevention mechanism, and a second control valve to select either of the auto-stroke mechanism and the idle strike prevention mechanism. To the second control valve, a shared spool is slidably fitted and a mode selection means is disposed. When the mode selection means allows supply of pressurized oil to an auto-stroke setting portion of the shared spool and prohibits discharge of pressurized oil from an idle strike prevention setting portion, the auto-stroke mechanism is selected. When prohibiting supply of pressurized oil to the auto-stroke setting portion and allowing discharge of pressurized oil from the idle strike prevention setting portion, the idle strike prevention mechanism is selected. 1a cylinder;a piston slidably fitted into the cylinder in such a manner as to be capable of advancing and retracting;a first control valve to control advancing and retracting movements of the piston;an auto-stroke mechanism configured to switch a piston stroke of the piston between a regular stroke and a short stroke shorter than the regular stroke;an idle strike prevention mechanism configured to decompress an inside of a circuit configured to hydraulically drive the piston to lower than a working pressure; anda second control valve to select either mode of the auto-stroke mechanism and the idle strike prevention mechanism, wherein:to the second control valve, a shared spool including an auto-stroke setting portion and an idle strike prevention setting portion at the same time is slidably fitted,a mode selection means for allowing and cutting off both of supply of pressurized oil to the auto-stroke setting portion and discharge of pressurized oil from the idle strike prevention ...

POWER TOOL

A power tool including an impact tool, a body and an actuator. The actuator is operable to move the body along an operational axis from an impact position, at which the body is operable to transfer impact energy to a head end of the impact tool, to a retracted position spaced apart from the impact position along the operational axis. 1. A power tool , comprising:an impact tool having a head end; a first engagement land, and', 'a first engagement edge;, 'a first flange, comprising, 'a body, comprising an impact position at which the body is operable to transfer impact energy to the head end of the impact tool, and', 'a retracted position spaced apart from the impact position along the operational axis;', a first actuator rotational axis, and', 'a first engagement member offset from, and rotatable around, the first actuator rotational axis,, 'the first actuator, comprising, 'a plane defined by the operational axis and the first actuator rotational axis being coplanar with a surface of the first engagement edge;', [ travels along the first flange engagement land; and', 'simultaneously urges the body in a direction away from the body impact position toward the body retracted position; and, 'at the body impact position, the first engagement member is operable to engage with the first flange engagement edge, and as the first engagement member rotates around the first actuator rotational axis, the first engagement member'}, 'at the body retracted position the first engagement member is operable to move past the first flange engagement edge to disengage the body from the first engagement member, permitting the body to move on an impact stroke to the body impact position., 'the first engagement member and first flange being arranged relative to each such that], 'a first actuator configured to move the body along an operational axis between'}2. The power tool as claimed in claim 1 , wherein: a second engagement land, and', 'a second engagement edge; and, 'a second flange, ...

HAMMER DRILL

A hammer drive mechanism for a hammer strike mechanism of a hammer drill is provided including: a drive shaft capable of being rotationally driven by a motor, a rod capable of reciprocatingly driving a piston, and a conversion mechanism that converts the rotary movement of the drive shaft into a reciprocating movement of the rod. The drive shaft comprises a first part connected to the conversion mechanism and a second part capable of being rotationally driven by a motor. The second part connects to the first part via at least one dampener such that rotary movement of the second part is transferred to the first part via the at least one dampener. 1. A hammer drive mechanism for a hammer strike mechanism of a hammer drill comprising:a drive shaft rotationally driven by a motor;a rod configured to reciprocatingly drive a piston; anda conversion mechanism configured to convert a rotary movement of the drive shaft into a reciprocating movement of the rod,wherein the drive shaft comprises a first part connected to the conversion mechanism and a second part rotationally driven by the motor, the second part connecting to the first part via at least one dampener such that a rotary movement of the second part is transferred to the first part via the at least one dampener.2. The hammer drive mechanism of claim 1 , wherein at least one of the at least one dampener comprises resiliently deformable material.3. The hammer drive mechanism of claim 1 , wherein at least one of the at least one dampener comprises a mechanical spring.4. The hammer drive mechanism of claim 1 , wherein the conversion mechanism is a crank mechanism.5. The hammer drive mechanism of claim 4 , wherein:the crank mechanism comprises a crank pin mounted eccentrically on the first part of the drive shaft,one end of the rod is pivotally attached to the crank pin, andthe rod extends away from the crank pin in a direction that is perpendicular to an axis of rotation of the drive shaft.6. The hammer drive mechanism ...

Automatic Lubrication System with Detune

Lubrication system includes a drive fluid valve member and a detune valve member. The drive fluid valve member is movable from a first to a second position in response to drive fluid pressure to reduce the volume of a variable volume lubricant charge chamber. The detune valve member is movable from a first to a second position in response to lubricant pressure within the lubricant charge chamber, and is adapted to permit fluid communication between inlet and bypass fluid passages in its the first position and to disengage the fluid connection in its second position.

PERCUSSION DEVICE

The invention relates to a percussion device comprising a percussion mechanism housing which has a receiving bore in which a percussion piston is mounted such that it is movable along the longitudinal axis, wherein at least one percussion mechanism guide surface having an inner diameter is formed in the receiving bore and at least one percussion piston guide surface having an outer diameter is formed on the percussion piston. In order to avoid radial contact between the percussion piston and the percussion mechanism housing as far as possible, to reduce the volume of oil leakage through the gap of the guide surface and to prevent wear on the guide surfaces and on the lands between the seals, according to the invention the percussion mechanism guide surface has, at least in some regions, an inner diameter that increases non-linearly in the axial direction and/or the percussion piston guide surface has an outer diameter that decreases non-linearly in the axial direction. 1. An impact tool with an impact mechanism housing having a receiving bore in which an impact piston is mounted such that it is movable along the longitudinal axis , wherein at least one impact mechanism guide surface having an inner diameter is formed in the receiving bore and at least one impact piston guide surface having an outer diameter is formed on the impact piston , wherein the impact mechanism guide surface has in the axial direction at least in regions an inner diameter that increases non-linearly and/or that the impact piston guide surface has an outer diameter that decreases non-linearly in the axial direction.2. The impact tool as claimed in claim 1 , wherein the inner diameter of the impact mechanism guide surface has a diameter that increases non-linearly toward at least one of the ends.3. The impact tool as claimed in claim 2 , wherein the impact mechanism guide surface guides a piston rod wherein the inner diameter of the impact mechanism guide surface has a diameter that increases ...

Hammer temperature protection system and method

A hydraulic hammer including a housing, a piston arranged for reciprocating movement within the housing, a hydraulic circuit within the housing. The hydraulic circuit is configured for connection to a source of pressurized fluid. The hydraulic circuit includes an inlet passage configured to provide a hydraulic fluid to the piston, an outlet passage configured to provide a return flow path for the hydraulic fluid from the piston a bypass passage selectively connecting the inlet passage to the outlet passage and a thermostatic valve assembly configured to connect the inlet passage to the piston when the temperature of the hydraulic fluid is below a threshold temperature and connect the inlet passage to the bypass passage when the temperature of the hydraulic fluid is above the threshold temperature.

PNEUMATIC HAMMER

A pneumatic hammer has a handle, a body, a valve seat, a cylinder device, an assembling device, and a chisel. The body is transversally connected to the handle and has a chamber. The valve seat is mounted in the chamber of the body and has a rear valve, a front valve, and a valve plate disposed between the rear valve and the front valve. The cylinder device is mounted in the chamber, abuts against the valve seat, and has a cylinder barrel and a hammer. The cylinder barrel is mounted in the chamber and has a cylinder chamber. The hammer is movably disposed in the cylinder chamber. The assembling device is connected to the cylinder device, and has a mounting jacket, an engaging element, multiple positioning elements, a spring, and an engaging ring. The chisel is detachably connected to the assembling device, and is inserted into the cylinder chamber. 1. A pneumatic hammer comprising:a handle having a top; a closed end;', 'an open end opposite to the closed end of the body;', 'an external surface; and', 'a chamber formed in the body between the closed end and the open end of the body and communicating with the open end of the body;, 'a body transversally connected to the top of the handle, communicating with the handle, and having'} a rear valve;', 'a front valve connected to the rear valve; and', 'a valve plate mounted between the rear valve and the front valve;, 'a valve seat mounted in the chamber of the body adjacent to the closed end of the body and having'} a cylinder barrel mounted in the chamber via the open end of the body, abutting against the valve seat, and having a cylinder chamber axially formed in the cylinder barrel and communicating with the valve seat; and', 'a hammer axially and movably mounted in the cylinder chamber of the cylinder barrel;, 'a cylinder device mounted in the chamber of the body via the open end of the body, abutting against the valve seat, and having'} [ a rear end;', 'a front end;', 'an internal surface;', 'an assembling chamber ...

Hydraulic Hammering Device

A hydraulic hammering device enables an auto-stroke mechanism and an idle strike prevention mechanism to coexist with a simple circuit configuration. The device includes a first control valve to control advancing and retracting movements of a piston, an auto-stroke mechanism and an idle strike prevention mechanism, and a second control valve to select either of the auto-stroke mechanism and the idle strike prevention mechanism. To the second control valve, a shared spool is slidably fitted and a mode selection means is disposed. When the mode selection means allows supply of pressurized oil to an auto-stroke setting portion of the shared spool and prohibits discharge of pressurized oil from an idle strike prevention setting portion, the auto-stroke mechanism is selected. When prohibiting supply of pressurized oil to the auto-stroke setting portion and allowing discharge of pressurized oil from the idle strike prevention setting portion, the idle strike prevention mechanism is selected. 1. A hydraulic hammering device , comprising:a cylinder;a piston slidably fitted into the cylinder in such a manner as to be capable of advancing and retracting;a first control valve to control advancing and retracting movements of the piston;an auto-stroke mechanism configured to switch a piston stroke of the piston between a regular stroke and a short stroke shorter than the regular stroke;an idle strike prevention mechanism configured to decompress an inside of a circuit configured to hydraulically drive the piston to lower than a working pressure; anda second control valve to select either mode of the auto-stroke mechanism and the idle strike prevention mechanism, wherein:to the second control valve, a shared spool including an auto-stroke setting portion and an idle strike prevention setting portion at the same time is slidably fitted,a mode selection means for allowing and cutting off both of supply of pressurized oil to the auto-stroke setting portion and discharge of ...

HAMMER ASSEMBLY

A hammer including a housing and a piston arranged for reciprocating movement within the housing is disclosed. The hammer further includes a head assembled on the housing and defining a chamber for holding a pressurized gas and a wall configured to abut the housing and defining a gas discharge passage extending between the chamber and the housing. A plug is positioned in the gas discharge passage and configured to move or deform under pressure of the pressurized gas in the chamber. 1. A hammer comprising:a housing;a piston arranged for reciprocating movement within the housing;a head assembled on the housing and defining a chamber for holding a pressurized gas; the head comprising a wall configured to abut the housing and defining a gas discharge passage extending between the chamber and the housing; anda plug positioned in the gas discharge passage and configured to move or deform under pressure of the pressurized gas in the chamber on separation of the head from the housing.2. The hammer of claim 1 , wherein the plug abuts the housing.3. The hammer of claim 1 , wherein the plug defines a clearance with the gas discharge passage.4. The hammer of claim 3 , wherein the plug comprises of a seal configured to engage the gas discharge passage.5. The hammer of claim 1 , wherein the head is assembled on the housing by bolts.6. The hammer of claim 1 , wherein the pressurized gas is nitrogen.7. The hammer of claim 1 , wherein the gas discharge passage has a first end exposed to the chamber and a second end having a receptacle configured to receive the plug.8. A hammer comprising:a first member and a second member configured for attachment to each other and defining a chamber for holding a pressurized gas;a gas discharge passage defined in the first member and extending between the chamber and an outside surface of the first member;a plug inserted in the gas discharge passage, the plug retained in the gas discharge passage against the pressure of the gas in the chamber by ...

HYDRAULIC HAMMER HAVING CO-AXIAL ACCUMULATOR AND PISTON

A hydraulic hammer is disclosed having a piston and an accumulator membrane disposed external and co-axial to the piston. Additionally, a sleeve is disposed between the piston and accumulator membrane, wherein the sleeve has a plurality of radial passages formed therein that fluidly connect the accumulator membrane with the piston. 1. A method of operating a hydraulic hammer , comprising:receiving pressurized fluid at an inlet;directing the pressurized fluid axially into an accumulator membrane;redirecting the pressurized fluid radially inward from the accumulator membrane toward a piston; andbiasing the piston upward with the pressurized fluid.2. The method of claim 1 , further including selectively blocking and passing pressurized fluid to a valve with movement of the piston.3. The method of claim 2 , further including:directing the pressurized fluid axially away from a tip of the piston to the valve; andbiasing the valve upward with the pressurized fluid.4. The method of claim 3 , further including selectively directing the pressurized fluid into a fluid chamber located axially adjacent to the valve.5. The method of claim 4 , further including biasing the piston downward claim 4 , away from the valve claim 4 , with the pressurized fluid in the fluid chamber.6. The method of claim 5 , wherein biasing the piston upward increases gas pressure within a gas chamber located axially adjacent to the fluid chamber.7. The method of claim 6 , further including biasing the piston downward and away from the valve with the pressurized gas in the gas chamber.8. The method of claim 7 , further including directing the pressurized fluid from the fluid chamber radially outward and through a plurality of outlet apertures located between the annular groove and gas chamber. This is a divisional of application Ser. No. 13/837,969, filed Mar. 15, 2013, which is incorporated herein by reference.The present disclosure is directed to a hydraulic hammer and, more particularly, to a ...

CHARGING SYSTEM FOR HYDRAULIC HAMMER

A charging system for a hydraulic hammer is disclosed. The charging system includes a charge plug. The charge plug is disposed on an opening defined in the wall housing connected to the top end of the power cell of a hammer. The charge plug is fluidly communicated to the chamber via a conduit. The charge plug includes a first compartment. The first compartment is configured to receive a first chemical substance. The charge plug also includes a second compartment. The second compartment is configured to receive a second chemical substance. The first compartment and the second compartment are covered by a membrane. A pressure difference causes collapsing of the membrane to allow the first chemical substance and the second chemical substance is allowed to react with each other. The reaction of the first chemical substance and the second chemical substance pressurizes the air within the chamber to a desired pressure. 1a wall housing connected to a top end of the power cell, and defining a chamber therein, wherein a first end of a piston slidably disposed within the power cell is received within the chamber and a second end is configured to engage with a tool, and wherein the chamber is adapted to contain pressurized air for moving the piston between a first position and a second position; and a first compartment configured to receive a first chemical substance; and', 'a second compartment disposed adjacent to the first compartment, the second compartment configured to receive a second chemical substance, wherein each of the first compartment and the second compartment is covered by a membrane,', 'wherein the piston moves from the first position to the second position during charging of the hydraulic hammer to create a pressure difference within the chamber, and wherein the pressure difference causes collapsing of the membrane to allow the first chemical substance and the second chemical substance react with each other, and wherein reaction of the first chemical ...

Method for controlling the impact energy of an impulse piston of a percussion tool

This control method comprises the steps consisting in providing a control device ( 16 ) arranged for adjusting the impact energy of the striking piston ( 4 ) of a percussion apparatus ( 2 ), providing a controller ( 17 ) arranged for applying a control instruction to the control device ( 16 ), switching on the percussion apparatus ( 2 ), measuring at least one seismic datum in the vicinity of a structure to be protected ( 13 ), and transmitting the at least one seismic datum measured at the controller ( 17 ), comparing the at least one seismic datum received by the controller ( 17 ) with a predetermined threshold value, correcting the control instruction of the control device ( 16 ) according to the at least one received seismic datum, and applying, by means of the controller ( 17 ), said corrected control instruction to the control device ( 16 ).

Variable Volume Accumulator

A hammer assembly including a hammer housing and a work tool movably supported in the hammer housing is provided. A gas chamber is defined in the hammer housing and contains a compressible gas. An accumulator assembly includes an interior space. A barrier divides the interior space into a first interior portion containing a compressible gas and a second interior portion configured to receive a pressurized fluid. The barrier is configured to be movable in response to changing the amount of pressurized fluid in the second interior portion and such that movement of the barrier varies the volume of the first interior portion. The first interior portion is in communication with the gas chamber. A control valve assembly is configured for selectively placing the second interior portion of the accumulator assembly in communication with a pressurized fluid source. 1. A hammer assembly comprising:a hammer housing;a work tool movably supported in the hammer housing;a gas chamber defined in the hammer housing and containing a compressible gas;an accumulator assembly including an interior space, a barrier dividing the interior space into a first interior portion containing a compressible gas and a second interior portion configured to receive a pressurized fluid, the barrier being configured to be movable in response to changing the amount of pressurized fluid in the second interior portion and such that movement of the barrier varies the volume of the first interior portion, the first interior portion being in communication with the gas chamber;a control valve assembly configured for selectively placing the second interior portion of the accumulator assembly in communication with a pressurized fluid source; anda piston movably disposed in the housing and having a first fluid engagement surface configured for engagement with a pressurized fluid for moving the piston in a first direction away from the work tool and thereby compressing the compressible gas in the gas chamber and ...

ADAPTIVE HAMMER CONTROL SYSTEM

A control system for a hydraulic hammer is provided. The control system includes a sensing unit configured to sense position and rebound acceleration of a piston of the hydraulic hammer. The control system further includes an electronic control module (ECM) in communication with the sensing unit, and configured to generate signals based on the sensed position and rebound acceleration of the piston. The control system further includes a selection unit configured to allow an operator to select between a manual mode and an automatic mode. The control system further includes a valve in communication with the electronic control module (ECM). The valve being configured to be operated between a closed position and an open position based on the signals generated by the electronic control module (ECM) to selectively move the piston. 1. A control system for a hydraulic hammer , the control system comprising:a sensing unit configured to sense position and rebound acceleration of a piston of the hydraulic hammer;an electronic control module (ECM) in communication with the sensing unit, and configured to generate signals based on the sensed position and rebound acceleration of the piston;a selection unit in communication with the electronic control module (ECM) and configured to allow an operator to select between a manual mode and an automatic mode, wherein in the manual mode the operator selects number of blows per minute for the hydraulic hammer, and in the automatic mode, upon sensing threshold limit of rebound acceleration of the piston, the electronic control module (ECM) adjusts piston movement based on a work surface; anda valve in communication with the electronic control module (ECM), the valve being configured to be operated between a closed position and an open position based on the signals generated by the electronic control module (ECM) to selectively move the piston.2. A hydraulic hammer comprising:a housing;a piston movably positioned within the housing;a tool ...

FLUID-DRIVEN PULSING HAMMERING TOOL

Disclosed is a fluid driven pulsating, hammering tool operational when pressurized fluid is pumped into the tool's upper sub, having a poppet valve which can seal the upper end of a slidable outer valve assembly when closed; an inner valve assembly slidable within the outer valve assembly; wherein the inner and outer valve assemblies remain in selective fluid communication with the poppet valve even when the poppet valve is closed, wherein interruption of said fluid communication occurs from movement of the inner and/or outer valve assemblies to particular positions along their sliding paths; and further including a lower valve which is preferably a Tesla valve having channels which are also in fluid communication with the poppet valve. 1. A fluid driven pulsating , hammering tool operational when pressurized fluid is pumped into said tool's upper sub , comprising:a poppet valve having a valve seat which can seal the upper end of a slidable outer valve assembly when closed thereby generating back pressure waves in the pressurized fluid which intermittently reduce the fluid pressure in the poppet valve such that it intermittently opens the valve seat;an inner valve assembly slidable within the outer valve assembly;wherein the inner and outer valve assemblies remain in selective fluid communication with the poppet valve even when the poppet valve is closed, wherein interruption of said fluid communication occurs from movement of the inner and/or outer valve assemblies to particular positions along their sliding paths, such that said interruption also generates back pressure waves in the pressurized fluid which intermittently reduce the fluid pressure in the poppet valve;further including a lower back pressure valve having at least one channel curved with respect to the tool axis, and wherein there is a fluid path from said channel directly to the poppet valve, and a second flow path from said channel to the inner valve assembly and to the outer valve assembly such ...

ROTARY-PERCUSSIVE HYDRAULIC PERFORATOR PROVIDED WITH A STOP PISTON AND A BRAKING CHAMBER

The rotary-percussive hydraulic perforator a body; a shank; a striking piston configured to strike the shank and provided with a braking surface; a braking chamber configured to hydraulically brake the striking piston; a stop piston configured to apply a pushing force on the shank and provided with a bearing surface configured to abut against a stop surface provided on the body, so as to limit the stroke of displacement of the stop piston towards the shank. The rotary-percussive hydraulic perforator is configured such that the bearing surface and the stop surface are axially spaced apart by a predetermined spacing distance simultaneously when (i) the shank bears on the stop piston and is in contact with the striking piston, and (ii) the braking surface is located at an inlet edge of the braking chamber. 1. A rotary-percussive hydraulic perforator comprising:a body;a shank mounted in the body and intended to be coupled to at least one drill bar equipped with a tool;a striking piston slidably mounted inside the body according to a striking axis and configured to strike the shank, the striking piston including a braking surface which extends transversely to the striking axis;a braking chamber configured to hydraulically brake the striking piston when the striking piston exceeds a predetermined striking position, the braking chamber being configured to be partially closed by the braking surface of the striking piston when the striking piston exceeds the predetermined striking position;a stop piston which is tubular and which is slidably mounted inside the body along an axis of displacement substantially parallel to the striking axis, the stop piston being configured to apply a pushing force on the shank, the stop piston comprising a bearing surface configured to abut against a stop surface provided on the body, so as to limit a stroke of displacement of the stop piston towards the shank;wherein the rotary-percussive hydraulic perforator is configured such that the ...

HAMMER HAVING PISTON SLEEVE WITH SPIRAL GROOVES

A sleeve is disclosed for use with a hammer. The sleeve may have a generally cylindrical body with a first end and a second end. The sleeve may also have a plurality of channels spiraling at least partially around the generally cylindrical body between the first and second ends. 1. A hammer sleeve , comprising:a generally cylindrical body having a first end and a second end; anda plurality of channels spiraling at least partially around the generally cylindrical body between the first and second ends.2. The hammer sleeve of claim 1 , wherein the plurality of channels include:a plurality of first channels each forming a portion of a different pressure passage;a second channel forming a portion of a drain passage; anda third channel forming a portion of a pilot signal passage.3. The hammer sleeve of claim 2 , wherein the plurality of channels further includes a fourth channel forming a portion of a shutoff passage.4. The hammer sleeve of claim 3 , wherein each of the different pressure passage claim 3 , signal passage claim 3 , and shutoff passage spirals through about 90°.5. The hammer sleeve of claim 4 , wherein the drain passage extends from the first end a greater distance toward the second end than each of the different pressure passage claim 4 , the drain passage claim 4 , and the signal passage.6. The hammer sleeve of claim 5 , wherein the drain passage spirals through about 100-360° at a location between the second end of the generally cylindrical body and each of the different pressure passage claim 5 , drain passage claim 5 , and signal passage.7. The hammer sleeve of claim 2 , wherein the plurality of first channels includes four first channels.8. The hammer sleeve of claim 2 , wherein each of the plurality of first channels has at least one of a depth and a width greater than a depth and a width of the second claim 2 , third claim 2 , and fourth channels.9. The hammer sleeve of claim 8 , wherein each of the plurality of first channels claim 8 , second ...

Hammer Raising Device

Provided a hammer raising device configured to increase striking intensity by eliminating fluid resistance when a piston raised upward moves downward. To achieve this, the hammer raising device includes a hydraulic control valve that controls a supply of a fluid, a sub cylinder to which the fluid is supplied by an operation of the hydraulic control valve, a sub piston that is partially accommodated within the sub cylinder, and is raised or lowered by the fluid, a main piston that comes in close contact with a longitudinal end of the sub piston to be raised by the raising of the sub piston, and is lowered when the closely contacted longitudinal end of the sub piston is separated, and a main cylinder that accommodates the main piston. 1. A hammer raising device comprising:a sub cylinder to which a fluid is supplied by an operation of a hydraulic control valve;a sub piston that is partially accommodated within the sub cylinder, and is raised or lowered by the fluid;a main piston that comes in close contact with a longitudinal end of the sub piston to be raised by the raising of the sub piston, and is lowered when the closely contacted longitudinal end of the sub piston is separated;a main cylinder that accommodates the main piston; anda switching valve that separates the sub piston from the main piston by closing the hydraulic control valve when the main piston reaches a maximum point where the main piston is able to move within the main cylinder.2. The hammer raising device of claim 1 ,wherein the sub piston includes a first sub piston, and a second sub piston, andthe first sub piston and the second sub piston alternately raises the main piston.3. The hammer raising device of claim 1 , wherein a main piston detection unit sensing whether or not the main piston reaches a maximum point where the main piston is able to move within the main cylinder.4. The hammer raising device of claim 3 , wherein the switching valve separates the sub piston from the main piston by ...

SYSTEMS AND METHODS FOR MODULATING PRESSURE WAVE THERAPY

A processor-controlled, energy-based therapy apparatus includes a device configured to provide therapeutic energy to a patient and a processor that controls the output of the device. The output of the device is based on output profiles programmed into the processor. The output profiles include a therapeutic energy output profile and a ramp-up energy profile. The therapeutic energy output profile includes a desired target energy level and a therapeutic duration for controlling the output of the device during a therapeutic period. The ramp-up energy output profile includes an initial treatment energy level and a ramp-up duration for controlling the output of the device during a ramp-up period. The energy output specified by the ramp-up energy output profile incrementally increases over the ramp-up duration as a function of the desired target energy level and the ramp-up duration. 1. (canceled)2. (canceled)3. A pressure wave therapy system comprising: a ballistic projectile positioned within a tube, and', 'a transmitter tip disposed at the end of the tube,', 'wherein compressed air accelerates the ballistic projectile through the tube to impact the transmitter tip to generate an acoustic pulse; and, 'a pressure wave therapy device configured to deliver acoustic pulses to a patient, the pressure wave therapy device comprisinga control unit configured to control the pressure wave therapy device to deliver a treatment program, the treatment program comprising a plurality of acoustic pulses, each acoustic pulse comprising a pressure, the control unit including a memory storing patient-specific treatment information relating to a pain threshold of the patient; anda pain threshold indicator operable by the patient to provide an indication of a pain threshold of the patient.4. The pressure wave therapy system of claim 3 , wherein the patient-specific treatment information stored in the memory includes a pain threshold of the patent determined during a previous treatment ...

IMPACT TOOL FOR A HAMMER DEVICE AND METHOD FOR OPENING A TAPPING OPENING

Impact tool and method for a hammer device that includes impact tool housing and tubular piston structured and arranged for axial displacement in impact tool housing via pressure medium. Tubular piston has essentially radial pressure surfaces structured and arranged on opposite portions of tubular piston to be acted on with pressure medium. Grooves are formed in impact tool housing that are structured and arranged for a reversal of a direction of a pressure medium impingement on pressure surfaces and discharge or recirculation of medium. Grooves include a control recess formed in tubular piston and at least two control grooves for a shift of pressure medium impingement on pressure surfaces that are arranged axially offset in impact tool housing. A controller is structured and arranged to alternatively activate one of the at least two control grooves via connection channels. 1. An impact tool for a hammer device , comprising:an impact tool housing;a tubular piston structured and arranged for axial displacement in two directions in the impact tool housing via a pressure medium, the tubular piston having essentially radial pressure surfaces structured and arranged on opposite portions of the tubular piston to be acted on with the pressure medium;a central or proximal adjustable transfer part is connectable to at least one tool and has anvil parts on both sides for receiving impact energy from the tubular piston;grooves formed in the tubular piston to form the essentially radial pressure surfaces, the grooves being structured and arranged for a reversal of a direction of the tubular piston according to a pressure medium impingement on the pressure surfaces;a control recess formed in the tubular piston between the radial pressure surfaces, being structured and arranged to communicate with at least two control grooves formed to be axially offset from each other in the impact tool housing; anda controller structured and arranged to alternatively activate one of the at ...

Pressure indicator for hydraulic hammer

A pressure indicator for a hydraulic hammer is provided. The pressure indicator includes a sleeve member configured to couple to an opening defined in a wall housing of an accumulator of the hydraulic hammer. The pressure indicator further includes a plunger slidably disposed within the sleeve member and movable between a first position and a second position with respect to the sleeve member. The plunger includes a first end disposed outside the wall housing of the accumulator. The plunger further includes a flange coupled to a second end. The pressure indicator further includes an elastic member inserted over the plunger and disposed between the wall housing of the accumulator and the flange. A position of the first end of the plunger with reference to an outer end of the sleeve member provides a visual indication of the pressure of the gas within the accumulator.

HYDRAULIC HAMMER HAVING VARIABLE STROKE CONTROL

A variable stroke control system for a hydraulic hammer is disclosed. The variable stroke control system may include an inlet groove formed around a piston associated with the hydraulic hammer and configured to receive pressurized fluid, and an outlet groove formed around the piston associated with the hydraulic hammer and configured to discharge the pressurized fluid. The variable stroke control system may further include a valve in fluid communication with the inlet groove and the outlet groove, and configured to selectively adjust a stroke length of the piston based on a change in pressure differential between the inlet groove and the outlet groove. 1. A variable stroke control system for a hydraulic hammer , comprising:an inlet groove formed around a piston associated with the hydraulic hammer and configured to receive pressurized fluid;an outlet groove formed around the piston associated with the hydraulic hammer and configured to discharge the pressurized fluid; anda valve in fluid communication with the inlet groove and the outlet groove, and configured to selectively adjust a stroke length of the piston based on a change in pressure differential between the inlet groove and the outlet groove.2. The variable stroke control system of claim 1 , wherein the pressure differential is indicative of a hardness of a material impacted by a work tool of the hydraulic hammer.3. The variable stroke control system of claim 1 , wherein the valve is configured to cause the stroke length of the piston to be longer when the pressure differential is greater than a threshold amount.4. The variable stroke control system of claim 3 , wherein the valve is configured to cause the stroke length of the piston to be shorter when the pressure differential is less than the threshold amount.5. The variable stroke control system of claim 1 , wherein the valve includes:a valve element configured to move between a flow blocking position and a flow passing position; anda spring configured to ...

HYDRAULIC HAMMER HAVING CO-AXIAL ACCUMULATOR AND PISTON

A hydraulic hammer is disclosed having a piston and an accumulator membrane disposed external and co-axial to the piston. Additionally, a sleeve is disposed between the piston and accumulator membrane, wherein the sleeve has a plurality of radial passages formed therein that fluidly connect the accumulator membrane with the piston. 1. A hydraulic hammer assembly , comprising:a piston;an accumulator membrane disposed external and co-axial to the piston; anda sleeve disposed between the piston and the accumulator membrane, the sleeve having a plurality of radial passages formed therein that fluidly connect the accumulator membrane with the piston.2. The hydraulic hammer of claim 1 , further including a sleeve liner disposed radially between the accumulator membrane and the sleeve.3. The hydraulic hammer of claim 2 , further including a plurality of longitudinal recesses formed within the sleeve claim 2 , wherein at least one of the plurality of longitudinal recesses fluidly connects at least one of the plurality of radial passages with the accumulator membrane.4. The hydraulic hammer of claim 3 , further including an annular groove formed at an internal surface of the sleeve claim 3 , wherein the plurality of longitudinal recesses fluidly connect the annular groove with the accumulator membrane via the plurality of radial passages.5. The hydraulic hammer of claim 4 , wherein:the piston includes an impact end; andthe annular groove is disposed between the impact end and the plurality of radial passages.6. The hydraulic hammer of claim 4 , further including a valve located at an axial end of the accumulator membrane claim 4 , wherein the plurality of longitudinal recesses connect the valve to at least one of the plurality of radial passages.7. The hydraulic hammer of claim 6 , further including:a head configured to close off an end of the sleeve; anda fluid chamber formed within the head.8. The hydraulic hammer of claim 7 , wherein the valve is located inward of the ...

HYDRAULIC HAMMER HAVING IMPACT SYSTEM SUBASSEMBLY

An impact system for a hydraulic hammer is disclosed. The impact system may include a piston, a sleeve disposed co-axial with the piston, and an accumulator membrane disposed external to the sleeve. A first seal may be located at an end of the sleeve, and configured to connect the sleeve to the piston. The accumulator membrane may have an extension configured to engage a recess in the sleeve. 1. An impact system for a hydraulic hammer , the impact system comprising:a piston;a sleeve disposed co-axial with the piston;a first seal located at an end of the sleeve and configured to connect the sleeve to the piston; andan accumulator membrane disposed external to the sleeve and having an extension configured to engage a recess in the sleeve.2. The impact system of claim 1 , wherein the first seal is configured to generate a radial force on the sleeve and the piston after assembly that secures the sleeve to the piston.3. The impact system of claim 1 , wherein the extension is co-axial with the piston and oriented inwards towards the piston.4. The impact system of claim 1 , further including:a seal carrier disposed co-axial with the piston; anda second seal configured to connect the seal carrier to the piston.5. The impact system of claim 4 , wherein the second seal is configured to generate a radial force on the seal carrier and the piston after assembly that secures the seal carrier to the piston.6. The impact system of claim 5 , further including a valve trapped within a cavity formed between the seal carrier and the piston.7. The impact system of claim 6 , wherein the valve is disposed external to the accumulator membrane.8. The impact system of claim 6 , wherein the seal carrier and the sleeve overlap each other axially to form the cavity.9. The impact system of claim 8 , wherein:the seal carrier includes a female connector; andthe sleeve includes a male connector received by the female connector.10. The impact system of claim 1 , further including a sleeve liner ...

HYDRAULIC HAMMER HAVING VARIABLE STROKE CONTROL

A variable stroke control system for a hydraulic hammer is disclosed. The variable stroke control system may include a valve configured to selectively adjust a stroke length of a piston associated with the hydraulic hammer based on the direction of flow of pressurized fluid within the hydraulic hammer. 1. A variable stroke control system for a hydraulic hammer , comprising:a valve configured to selectively adjust a stroke length of a piston associated with the hydraulic hammer based on the direction of flow of pressurized fluid within the hydraulic hammer.2. The variable stroke control system of claim 1 , wherein the valve is configured to cause the stroke length of the piston to decrease when the pressurized fluid flows within the hydraulic hammer in a first direction.3. The variable stroke control system of claim 1 , wherein the valve is configured to cause the stroke length of the piston to increase when the pressurized fluid flows within the hydraulic hammer in a second direction.4. The variable stroke control system of claim 1 , further including a routing assembly having a pump and a return tank claim 1 , and configured to direct pressurized fluid within the hydraulic hammer in a first direction or in a second direction.5. The variable stroke control system of claim 4 , further including an operator control valve configured to receive an operator input indicative of a desire to direct the pressurized fluid in the first direction or in the second direction.6. The variable stroke control system of claim 1 , wherein the valve is a first valve claim 1 , and the variable stroke control system further includes a second valve configured to control a transition timing between upward and downward movements of the piston.7. The variable stroke control system of claim 6 , further including:an inlet groove formed around the piston and configured to receive pressurized fluid;an outlet groove formed around the piston and configured to discharge the pressurized fluid;a first ...

Two-Piston Hydraulic Striking Device

Provided is a two-piston hydraulic striking device that has stable operatively. This two-piston hydraulic striking device includes two striking mechanisms for striking one transfer member. Each striking mechanism has a pressure receiving area ratio between the front and rear of a piston thereof set in such a way that the two striking mechanisms have the same cycle time. 1. A two-piston hydraulic striking device comprising:a striking mechanism configured to strike one transfer member with two pistons, whereinthe striking mechanism includes a first striking mechanism and a second striking mechanism, and the first striking mechanism and the second striking mechanism are arranged in series in front and rear direction in such a way that striking axes are coaxial with each other and the second striking mechanism is positioned on a side where the one transfer member is located,the first striking mechanism includes: a first cylinder; a first piston configured to be slidably fitted into the first cylinder in such a manner as to be able to advance and retract, the first piston having a first striking portion for striking the one transfer member at a tip portion of the first piston; and a first switching valve configured to switch advancing and retracting movements of the first piston, a second cylinder; a second piston configured to be slidably fitted into the second cylinder in such a manner as to be able to advance and retract, the second piston having a second striking portion for striking the one transfer member at a tip portion of the second piston; and', 'a second switching valve configured to switch advancing and retracting movements of the second piston,, 'the second striking mechanism includesonly either the first striking mechanism or the second striking mechanism includes a valve controller for controlling operation of both the first switching valve and the second switching valve,of the two pistons, at least the second piston is formed into a hollow shape and the ...

CONTROL OF THE WORKING FREQUENCY OF AN IMPACT MECHANISM

Control device of an impact mechanism operable by a pressure media having an element for reversing the axial pressurization of the percussion piston and the return of the medium. In order to achieve a controllability of impact mechanisms by which the energy and the frequency of the moved percussion piston can be adjusted, at least one channel switchable by the reversal as a return line for the medium from the percussion hammer has at least one switchable element for the flow control. 1. A control device of an impact mechanism operable by a pressure medium , comprising:a reversal element structured and arranged for reversing an axial pressurization of a percussion piston and a return of the pressure medium,wherein at least one channel switchable by the reversal part to a return line for the medium from the percussion hammer has at least one switchable element for flow control.2. The control device according to claim 1 , wherein the at least one channel comprises two channels claim 1 , and wherein both channels are switchable by the reversal part as a return line for the medium from the percussion piston claim 1 , and each channel includes switchable elements for flow control.3. The control device according to claim 2 , wherein the switchable elements for flow control for the medium are adjustable separately from one another.4. A method of using a control device of an impact mechanism according to claim 1 , the method comprising:controlling a pressure medium flow in a device for at least one of opening and closing a tapping hole of a metallurgical vessel.5. A control device for an impact mechanism comprising:a housing having first and second axial ends; anda reversal part arranged in the housing for limited axial movement,wherein the reversal part is positionable within the housing to open paths for a flow of a pressure medium or a return flow of the medium to or from the impact mechanism.6. The control device according to claim 5 , further comprising:a switching ...

Valve of Pneumatic Hammer

A valve of a pneumatic hammer include a rear mechanism including two opposite inlets, a chamber member, outlets, a relief chamber communicating with the outlets, two opposite inlet channels disposed externally of the chamber member, and two first outlet tunnels disposed externally of the chamber member wherein one end of the relief chamber communicates with the first outlet tunnels, the first outlet tunnels are disposed externally of the relief chamber and pass through the rear mechanism, and the inlets communicate with the inlet channels and the outlets; a front mechanism including a chamber element communicating with the inlet channels, an axial tunnel through a center of the chamber element, and two second outlet tunnels disposed externally of the chamber element, the second outlet tunnels corresponding to and communicating with the first outlet tunnels; and a disc between the chamber member and the chamber element. 1. A valve of a pneumatic hammer , comprising:a rear mechanism including two opposite inlets, a chamber member, a plurality of outlets, a relief chamber communicating with the outlets, two opposite inlet channels disposed externally of the chamber member, and two first outlet tunnels disposed externally of the chamber member wherein one end of the relief chamber distal the chamber member communicates with the first outlet tunnels, the first outlet tunnels are disposed externally of the relief chamber and pass through the rear mechanism, and the inlets communicate with the inlet channels and the outlets;a front mechanism secured to the rear mechanism and including a chamber element on one surface corresponding to the chamber member, the chamber element communicating with the inlet channels, an axial tunnel disposed through a center of the chamber element, and two second outlet tunnels disposed externally of the chamber element, the second outlet tunnels corresponding to and communicating with the first outlet tunnels; anda disc disposed between the ...

Hydraulic Hammering Device

Hammering power of a hydraulic hammering device is improved by shortening a piston stroke, while keeping hammering energy. The device includes a cylinder, a piston slidingly fitted in the cylinder, and a piston front chamber and a piston rear chamber defined between an outer circumferential surface of the piston and an inner circumferential surface of the cylinder and disposed separately from each other at front and rear, respectively, in an axial direction. The device also includes a switching-valve mechanism driving the piston by switching at least one of the piston front or rear chamber into communication with at least one of a high pressure circuit or a low pressure circuit, and an acceleration piston disposed behind the piston and coming in contact with the piston during a retreat stroke of the piston to urge the piston forward in cooperation with braking force by pressurized oil acting on the piston. 1. A hydraulic hammering device comprising:a cylinder;a piston slidingly fitted in the cylinder;a piston front chamber and a piston rear chamber which are defined between an outer circumferential surface of the piston and an inner circumferential surface of the cylinder and disposed separately from each other at front and rear, respectively, in an axial direction of the piston;a switching-valve mechanism driving the piston by switching at least one of the piston front chamber and the piston rear chamber into communication with at least one of a high pressure circuit and a low pressure circuit; andan urging unit, which is disposed behind the piston and comes in contact with the piston during a retreat stroke of the piston, to urge the piston forward in cooperation with braking force by pressurized oil acting on the piston.2. The hydraulic hammering device according to claim 1 , wherein the urging unit comes into contact with the piston at a timing of an action of the braking force on the piston owing to pressurized oil during the retreat stroke of the piston.3. The ...

HYDRAULIC HAMMER

A hydraulic hammer for a machine is provided. The hydraulic hammer includes a housing and a piston disposed within the housing and adapted to reciprocate along a longitudinal axis of the housing. The hydraulic hammer further includes a first chamber and a second chamber defined within the housing. The hydraulic hammer further includes a primary passage extending from an inlet and branching into a first passage and a second passage. The first passage fluidly communicates the primary passage with the first chamber and the second passage fluidly communicates the primary passage with the second chamber. The hydraulic hammer further includes a flow control device coupled to the first passage. The flow control device includes a valve element adapted to move between a first position and a second position based on an input signal indicative of a pressure of charge in the first chamber. 1. A hydraulic hammer of a machine , the hydraulic hammer comprising:a housing;a piston disposed within the housing and adapted to reciprocate along a longitudinal axis of the housing;a first chamber defined within the housing;a second chamber defined within the housing;a primary passage extending from an inlet and branching into a first passage and a second passage, the first passage fluidly communicating the primary passage with the first chamber and the second passage fluidly communicating the primary passage with the second chamber; anda flow control device coupled to the first passage, the flow control device including a valve element adapted to move between a first position and a second position based on an input signal indicative of a pressure of charge in the first chamber, wherein the valve element allows flow of charge from the primary passage to the first chamber in the first position and restricts flow of charge from the primary passage to the first chamber in the second position, allowing the first chamber to be pressurized to a first pressure equal to the input signal and the ...

Hydraulic Hammering Device

A hydraulic hammering device is capable of sufficiently transmitting blow energy to bedrock while further strengthening cushioning action and suppressing damage to equipment. The device includes a pushing piston disposed behind a transmission member and having a smaller propulsive force than that of a main body, a damping piston positioned behind the pushing piston to slide reciprocally forwards and backwards and having a greater propulsive force than that of the main body, a direction-restrictor in a high-pressure circuit between pushing and damping chambers, to which hydraulic fluid is supplied for providing the pistons with propulsive forces, and a fluid supply source. The direction-restrictor restricts an outflow from the chambers side to the fluid supply source side while allowing fluid inflow from the fluid supply source side to the chambers and the pushing chamber sides. A throttle in a drain circuit discharges leaked fluid from a sliding contact location to a tank. 1. A hydraulic hammering device comprising:a transmission member configured to transmit a propulsive force toward a crushing target side to a tool;a hammering mechanism configured to strike a blow on a rear portion of the transmission member;a pushing piston disposed immediately behind the transmission member, the pushing piston having a smaller propulsive force than a propulsive force of a device main body of the hydraulic hammering device;a damping piston positioned behind the pushing piston and disposed to slide reciprocally against the pushing piston in forward and backward directions, the damping piston having a greater propulsive force than the propulsive force of the device main body of the hydraulic hammering device;a pushing chamber configured to be supplied with hydraulic fluid from a fluid supply source to provide the pushing piston with the smaller propulsive force;a damping chamber configured to be supplied with hydraulic fluid from a-the fluid supply source to provide the damping ...

Hydraulic Striking Device

Provided is a hydraulic striking device in which a reverse operation circuit and a forward operation circuit can switch connection states to a high pressure circuit and a low pressure circuit by means of an operation switching valve. Further, the hydraulic striking device is configured to be selectable between a reverse operation mode or a forward operation mode by operating the operation switching valve. A high/low pressure switching portion is provided with a shortening portion for reducing the time required for high/low pressure switching operation in piston front and rear chambers in association with retraction of a valve to be shorter than the time required for high/low pressure switching operation in the piston front and rear chambers in association with advancement of the valve.

Method for Switching the Striking Stroke of a Striking Piston of a Percussion Device

A switching method includes starting up a percussion device in acting on a control device arranged to vary the striking stroke of the striking piston between a short striking stroke and a long striking stroke. The percussion device is forced to operate on a short striking stroke for a predetermined period of time from the starting up of the device, and in acting on the control device so as to allow the percussion device to operate on a long striking stroke, after the expiry of the predetermined period of time. 115-. (canceled)16. A method for switching the striking stroke of a striking piston of a percussion device , actuated by a pressurized incompressible fluid , between a short striking stroke and a long striking stroke , and conversely , the striking piston being alternately movable inside a cylinder of a body of the percussion device and being arranged to strike a tool during each operating cycle , the percussion device comprising a control device arranged to vary the striking stroke of the striking piston between the short and long striking strokes , the switching method being wherein it comprises the steps of:starting up the percussion device;acting on the control device so as force the percussion device to operate on a short striking stroke for a predetermined period of time from the starting up of the device; andacting on the control device so as to allow the percussion device to operate on a long striking stroke, after the expiry of the predetermined period of time.17. The switching method according to claim 16 , wherein the striking piston and the cylinder delimit at least a lower chamber connected continuously to a high-pressure fluid supply circuit and an upper chamber put in relation alternately with the high-pressure fluid supply circuit and a low-pressure return circuit by the action of a distributor connected to the control device claim 16 , and wherein the control device comprises a first control channel connected to the distributor claim 16 , and ...

Apparatus for Generating Impulse-Dynamic Process Forces

An apparatus for generating impulse-dynamic process forces includes a pressure chamber, a connecting chamber and a bolt chamber The pressure chamber includes a plunger arranged to be pushed into the pressure chamber for compression of a hydraulic medium 1ocated therein. In the connecting chamber there is displaceably arranged a stepped pistons which has a valve body for closing an orifice connecting the pressure chamber to the connecting chamber. In the bolt chamber there is located a displaceable impact bolt which has a first bolt portion and a second bolt portion The first bolt portion seals an interior space of the bolt chamber that surrounds the second bolt portion. Connected to the bolt chamber there is at least one pressure reservoir containing pressurised pressure medium, which pressure reservoir is in communicating connection via a connection port with the interior space of the bolt chamber. 1. An apparatus for generating impulse-dynamic process forces , comprising:a pressure chamber in which a pressurised hydraulic medium is arranged;means for temporarily increasing the pressure of the hydraulic medium located in the pressure chamber;a connecting chamber arranged downstream of the pressure chamber and connected thereto;a bolt chamber arranged downstream of the connecting chamber and connected thereto;a stepped piston arranged so as to be displaceable in the connecting chamber, which piston has a valve body for closing an orifice connecting the pressure chamber to the connecting chamber, and a piston portion facing the bolt chamber, by means of which piston portion a transmission space of the connecting chamber between the piston portion and the bolt chamber is sealed with respect to the side of the connecting chamber remote from the bolt chamber, the transmission space having a pressurised hydraulic medium arranged therein; andan impact bolt arranged so to be displaceable in the bolt chamber,wherein the impact bolt has a first bolt portion with a larger ...

HAMMERING DEVICE

Hammering device functioning with pressure fluid of a hydraulic arrangement which hammering device comprises a body (), () which can be attached to a working machine on which machine a hammering mass () is adjusted to be resting and to be moving which hammering mass is moved into a hammering position with the help of hydraulic pressure by directing the pressurized fluid into the ring-shaped, first chamber space () wherein the hammering mass () when it is moving into a hammering position compresses gas in the chamber space (K) located at the first side of the hammering mass () and in order to perform the hammering movement with the hammering mass () to the hammering element (), () the flow of hydraulic pressure is blocked to the first chamber space () and the access for pressure fluid is allowed away from the first chamber space () with the help of the valve (). In order to remove the pressure fluid fast from the first chamber space () the ring-shaped, second chamber space () is adjusted to be an extension for the first chamber space () and a ring-shaped valve () which comprises a closing ring is adjusted between the mentioned chamber spaces (), () the port of which valve is formed of a group of holes which holes are located in the mentioned closing ring. 11619363133527662676267672673. Hammering device functioning with pressure fluid of a hydraulic arrangement which hammering device comprises a body () , () which can be attached to a working machine on which machine a hammering mass () is adjusted to be resting and to be moving which hammering mass is moved into a hammering position with the help of hydraulic pressure by directing the pressurized fluid into the ring-shaped , first chamber space () in which case the hammering mass () when it is moving into a hammering position compresses gas in the chamber space (K) located at the first side of the hammering mass () and in order to perform the hammering movement with the hammering mass () to the hammering element () , ...

Device In A Rock Drilling Machine And Rock Drilling Machine

A device in a hydraulic rock drilling machine () including a distribution valve () arranged in connection with the rock drilling machine for controlling hydraulic flows to different parts of the rock drilling machine, wherein the distribution valve includes a valve body (), which is arranged movable to and fro in axial directions inside a valve chamber () and wherein the valve chamber is limited in axial direction by two valve end walls (). One of the valve end walls is movable in an axial direction against an abutment () in such a way that it defines an end position for the valve body, and a pressing device () is arranged for pressing said at least one of the valve end walls against said abutment. The invention also relates to a rock drilling machine. 11777888133101110111011. . Device in respect of a hydraulic rock drilling machine () including a distribution valve ( ,′ ,″) arranged in connection with the rock drilling machine for controlling hydraulic flows to different parts of the rock drilling machine , wherein the distribution valve includes a valve body ( ,′ ,″) , which is arranged movable to and fro in axial directions inside a valve chamber ) and wherein the valve chamber is limited in axial direction by two valve end walls ( ,; ′ ,′; ″ ,″) ,wherein{'b': 12', '12, 'at least one of the valve end walls is movable in an axial direction against an abutment (,″) in such a way that it defines an end position for the valve body,'}{'b': 13', '13', '13, 'a pressing device (,′,″) is arranged for pressing said at least one of the valve end walls in a direction of the second one of said valve end walls and against said abutment, and'}{'b': 13', '13', '13, 'said pressing device (,′,″) includes an end wall piston portion arranged on said at least one of the valve end walls and being received in a cylinder portion to be pressurized in order to drive the valve end wall against said abutment during pressurizing.'}2. Device according to claim 1 , wherein the cylinder portion ...

Percussion Device For A Hydraulic Rock Drilling Machine, Method Of Operation Of A Percussion Device And Hydraulic Rock Drilling Machine Including A Percussion Device

A percussion device for a hydraulic rock drilling machine () including, inside a cylinder (), a to and fro moveable impact piston (), which is provided with a land portion () for cooperation with a braking recess () in the cylinder () for the establishment of a braking chamber in advanced positions of the impact piston, wherein a throttle slit () is arranged to be established between the land portion () and the braking recess (). A pressure channel (), being connected to a pressure medium source, is arranged to debouch in the cylinder () between the piston guiding device () and a position of the land portion () in a most advanced position of the impact piston (). The invention also concerns a method and a hydraulic rock drilling machine. 114312114171211611. Percussion device for a hydraulic rock drilling machine () inducting , inside a cylinder () , a to and fro moveable impact piston () , which Is provided with a land portion () for co-operation with a braking recess () in the cylinder () for the establishment of a braking chamber in advanced positions of the impact piston relative to a normal impact position , as seen In an impact direction (R) of the percussion device , wherein a throttle slit () is established between wall portions of the land portion () and the braking recess () , and wherein the percussion device includes a piston guiding device () which is positioned in front of the braking recess () as seen in the impact direction (R) , wherein:{'b': 14', '4', '6', '12', '3, 'a pressure channel (), being connected to a pressure medium source, is arranged to debouch in the cylinder () between the piston guiding device () and a position of the land portion () In a most advanced position of the impact piston ().'}21413116. Percussion device according to claim 1 , wherein the pressure channel () is arranged to debouch in an equalizing chamber () being arranged between the braking recess () and the piston guiding device ().313. Percussion device according to ...

PERCUSSION APPARATUS

This percussion apparatus includes a striking piston, a control distributor arranged to control a reciprocating movement of the striking piston, and a control device arranged to vary the striking stroke of the striking piston. The control device comprises a plurality of control channels, a control channel connected to the control distributor, a control slide movably mounted between a plurality of control positions, and an adjusting slide mounted in a receiving housing delimited by the control slide, the control slide and the adjusting slide delimiting a first adjusting chamber connected to the control channel and a second adjusting chamber connected to a the high-pressure fluid supply circuit. The control slide is movably mounted between a first position in which the first control chamber and the second adjusting chamber are connected and a second position in which the first control chamber and the second adjusting chamber are isolated. 1. A percussion apparatus , including:a body delimiting a piston cylinder,a striking piston alternately movable inside the piston cylinder, and arranged to strike a tool during each operating cycle of the percussion apparatus,a control distributor arranged to control a reciprocating movement of the striking piston inside the piston cylinder reciprocally along a striking stroke and a return stroke, a control cylinder,', 'a plurality of control channels each opening into the control cylinder, each control channel also opening into the piston cylinder and being adapted to be put in communication with a high-pressure fluid supply circuit during at least one part of the reciprocating movement of the striking piston,', 'a control channel connected to the control distributor and opening into the control cylinder,', 'a control slide movably mounted in the control cylinder between a plurality of control positions in each of which the control slide is configured to fluidly connect the control channel with at least one of the control channels ...

PERCUSSION APPARATUS PROVIDED WITH A GUIDE BEARING EQUIPPED WITH A CENTERING DEVICE

This percussion apparatus includes a striking piston mounted so as to be displaced inside a piston cylinder and arranged to strike a tool; and a guide bearing comprising a guide surface configured to guide the striking piston during the displacements of the striking piston in the piston cylinder. The guide bearing includes a centering device configured to center the striking piston in the piston cylinder, the centering device comprising centering chambers formed in the guide surface and distributed around the striking piston, each centering chamber being fluidly connected to a high pressure fluid supply circuit; and at least one discharge groove formed in the guide surface of the guide bearing and located proximate to at least one of the centering chambers, the at least one discharge groove being fluidly connected to a low pressure circuit. 2. The percussion apparatus according to claim 1 , wherein the centering chambers are evenly distributed around the striking piston.3. The percussion apparatus according to claim 1 , wherein the centering chambers are aligned on a same circumference of the guide surface.4. The percussion apparatus according to claim 1 , wherein the centering device is configured to supply each centering chamber with a substantially constant supply flow rate.5. The percussion apparatus according to claim 1 , wherein the centering device includes a plurality of connection channels each provided with a flow rate control member claim 1 , each connection channel fluidly connecting the high pressure fluid supply circuit to a respective centering chamber.6. The percussion apparatus according to claim 5 , wherein each flow rate control member is a calibrated orifice.7. The percussion apparatus according to claim 1 , wherein the centering device includes a plurality of discharge channel claim 1 , each discharge channel fluidly connecting the low pressure circuit to a respective discharge groove.8. The percussion apparatus according to claim 1 , which ...

HANDHELD DEVICE FOR DRIVING A STATOR BLADE INTO A BLADE GROOVE

A handheld device for driving a stator blade into a blade groove arranged on a stator blade support of a turbine and which contains at least one stem element, having a striking device for carrying out individual hammer strikes of specifiable forces onto the stator blade to be driven, a trigger device for manually triggering an individual hammer strike to be carried out using the striking device, a detecting device for detecting respective installation force of the stator blade to be driven, the installation force being achieved with an individual hammer strike carried out using the striking device, an electronic analyzing device for analyzing each installation force of the stator blade to be driven, the installation force being detected using the detecting device, and at least one signaling device for signaling the installation force of the stator blade to be driven, the installation force being detected using the detecting device. 1. A handheld device for driving a stator blade into a blade groove , arranged on a stator blade support of a turbine and containing at least one caulking element , comprising:a striking device for performing individual hammer blows of a predetermined strength on the stator blade to be driven in,a trigger device for manually triggering an individual hammer blow to be performed with the striking device,a recording device for recording the inserting force, for the stator blade to be driven in, obtained in each case with an individual hammer blow performed with the striking device,an electronic evaluation device for evaluating the inserting force, for the stator blade to be driven in, recorded in each case with the recording device, andat least one signaling device for signaling the inserting force, for the stator blade to be driven in, recorded with the recording device.2. The handheld device as claimed in claim 1 ,wherein the signaling device is configured to visually signal the inserting force.3. The handheld device as claimed in claim 1 ...

PERCUSSION DRILLING DEVICE

A percussion drilling device for drilling in earth includes at least one housing section for a main piston, and a ring insert arranged in the housing section in front of the main piston so that the ring insert transmits at least part of the energy of the main piston onto the housing. The ring insert is attached to the housing by a shrink-fit connection. 19.-. (canceled)10. A percussion drilling device for drilling in earth , comprising:at least one housing section for a main piston; anda ring insert arranged in the housing section in front of the main piston, and attached to the housing section by a shrink-fit connection, the ring insert configured to transmit at least part of the energy of the main piston onto the housing.11. The percussion drilling device according to claim 10 , wherein:the housing section has an internal contour, wherein, when the housing section and the ring insert are at the same temperature, and the ring insert is external to the housing section, the internal contour of the housing section is smaller than an outer contour of the ring insert.12. The percussion drilling device according to claim 10 , wherein the housing section has a circular diameter.13. The percussion drilling device according to claim 10 , wherein the ring insert comprises an opening for a drilling head tip claim 10 , and a base area defining a conically tapering claim 10 , hollow space.14. The percussion drilling device according to claim 10 , wherein the ring insert is ring-shaped.15. The percussion drilling device according to claim 10 , wherein the ring insert is disposed at least in part in a housing section for a drilling head tip.16. The percussion drilling device according to claim 10 , wherein the ring insert is made of a first material claim 10 , and the housing section is made of a second material different from the first material.17. The percussion drilling device according to claim 10 , wherein the ring insert is made of a heat treated material.18. A method for ...

ROCK BREAKING DEVICE

The invention concerns a rock breaking device comprising a striking cell having at least one actuation chamber, a striking piston, and a hydraulic circuit comprising a hydraulic supply source having a High Pressure circuit and a Low Pressure circuit, and an actuator configured to connect the High Pressure circuit or the Low Pressure circuit to the actuation chamber so as to move the piston in translation in the striking cell in a normal movement area of which the limits are variable depending on the pressure difference between the High Pressure circuit and the Low Pressure circuit, the striking cell comprising depressurizing means configured to control the establishment of hydraulic communication between the High Pressure circuit and the Low Pressure circuit when the striking piston exits a predefined movement area. 1. A rock breaking device , comprising:a power cell having at least one actuating chamber,an impact piston translatable in the power cell, anda hydraulic circuit comprising:a hydraulic supply source having a High-Pressure circuit and a Low-Pressure circuit, andan actuator configured to connect the High-Pressure circuit or the Low-Pressure circuit to the actuating chamber such as to translate the piston in the power cell in a normal movement zone wherein the boundaries are variable depending upon the pressure difference between the High-Pressure circuit and the Low-Pressure circuit, wherein the power cell comprises depressurization means configured to command a placement in hydraulic communication of the High-Pressure circuit with the Low-Pressure circuit when the power cell leaves a predetermined movement zone.2. The device according to claim 1 , wherein the depressurization means comprise:a groove arranged on the impact piston, anda regulating portion connected on the one hand to the High-Pressure circuit and on the other hand to the Low-Pressure circuit, the regulating portion being closed off by the impact piston when the impact piston is movable in ...

DEVICE FOR PRESSURE MONITORING

A device for monitoring pressure within a gas space, which is filled with gas, preferably nitrogen, and/or is prestressed, of a pressure accumulator of a hydraulically driven percussive mechanism having a housing in which a piston is mounted, together with a display element which extends through the face surface of the housing, so as to be slidingly movable counter to the force of a spring, wherein the piston divides the housing into a pressure chamber and a spring chamber. The spring acts on a spring chamber-side working surface of the piston, and the pressure accumulator is at least indirectly operatively connected to the pressure chamber-side working surface of the piston, such that, in the event of a critical pressure within the pressure accumulator being undershot, the piston and the display element are displaced to such an extent that the display element protrudes out of the housing. 1. A device for monitoring a pressure within a gas space , which is filled with a gas , preferably nitrogen , and/or is prestressed , of a pressure accumulator of a hydraulically driven percussive mechanism , the device comprising:a housing in which a piston is mounted, together with a display element which extends through a face surface of the housing, so as to be slidingly movable counter to a force of a spring, wherein the piston divides the housing into a pressure chamber and a spring chamber, the spring acting on a spring chamber-side working surface, which is averted from the display element, of the piston, and the pressure accumulator is at least indirectly operatively connected to the pressure chamber-side working surface, facing toward the display element, of the piston, such that, in an event of a critical pressure within the pressure accumulator being undershot, the piston and the display element are displaced to such an extent that the display element protrudes out of the housing.2. A device according to claim 1 , wherein the display element has at least one marking ...

PRESSURE MONITORING DEVICE

A device for monitoring the pressure within a gas space, which is filled with a gas, preferably nitrogen, and/or is prestressed, of a pressure accumulator of a hydraulically driven percussive mechanism, in particular of a demolition hammer or of a drilling hammer, having a housing in which a piston is mounted, together with an indicator element which extends through the face surface of the housing, in slidingly movable fashion. The piston divides the housing into two chambers, and a first, pressure accumulator-side chamber and a pressure accumulator-side working surface, which is averted from the indicator element, of the piston are operatively connected at least indirectly to the gas space of the pressure accumulator. A second, hydraulics-side chamber and a hydraulics-side working surface, facing toward the indicator element, of the piston are connected to the hydraulic system of the percussive mechanism. 1. A device for monitoring a pressure within a gas space , which is filled with a gas , preferably nitrogen , and/or is prestressed , of a pressure accumulator of a hydraulically driven percussive mechanism , having a housing in which a piston is mounted , together with an indicator element which extends through a face surface of the housing , in slidingly movable fashion , wherein the piston divides the housing into two chambers , and a first , pressure accumulator-side chamber and a pressure accumulator-side working surface , which is averted from the indicator element , of the piston are operatively connected at least indirectly to the gas space of the pressure accumulator , the device comprising:a second, hydraulics-side chamber and a hydraulics-side working surface, facing toward the indicator element, of the piston connected to a hydraulic system of the percussive mechanism such that the indicator element, by way of a position of the indicator element, signals an undershooting of a critical pressure within the pressure accumulator if an exertion of pressure ...

METHOD FOR SETTING THE STRIKING STROKE OF A STRIKING PISTON OF A PERCUSSION APPARATUS, AND A PERCUSSION APPARATUS FOR IMPLEMENTING SAID METHOD

The percussion apparatus includes a striking piston and a piloting device configured to make a striking stroke of the striking piston vary, the piloting device comprising a piloting cylinder, a piloting slide mounted movable in translation within the piloting cylinder according to a direction of displacement and mounted movable in rotation within the piloting cylinder, and a main piloting chamber delimited by the piloting slide and the piloting cylinder. The percussion apparatus further includes a setting device configured to set a range of variation of the striking stroke of the striking piston, the setting device including a setting member configured to set the angular position of the piloting slide in the piloting cylinder, and at least one fluidic communication passage formed on the piloting slide and configured to hydraulically limit the translational displacement stroke of the piloting slide according to the direction of displacement according to the angular position occupied by the piloting slide. 1. A setting method for setting a striking stroke of a striking piston of a percussion apparatus , the setting method comprising the following steps:providing a percussion apparatus comprising a striking piston displaceable in a reciprocating manner inside a body of the percussion apparatus and configured to hit a tool at each operating cycle of the percussion apparatus, and a piloting device configured to make the striking stroke of the striking piston vary automatically according to the hardness of the ground encountered by the tool, the piloting device comprising a piloting cylinder, a piloting slide mounted movable in translation within the piloting cylinder according to a direction of displacement and configured to occupy a plurality of piloting positions shifted from one another according to the direction of displacement, and a main piloting chamber delimited by the piloting slide and the piloting cylinder,setting a range of variation of the striking stroke of ...

Hydraulic Hammering Device

A hydraulic hammering device includes a piston front chamber and a piston rear chamber defined between an outer circumferential surface of the piston and an inner circumferential surface of the cylinder and disposed separately from each other at front and rear, respectively, in an axial direction. A switching-valve mechanism drives the piston by switching at least one of the piston front chamber and the piston rear chamber into communication with at least one of a high pressure circuit and a low pressure circuit. An acceleration piston is disposed behind the piston and is configured to come into contact with the piston during a retreat stroke thereof to urge the piston forward, in which a timing where the acceleration piston itself starts to come in contact with the piston is set to be earlier than a timing where the piston is braked by the switching-valve mechanism. 1. A hydraulic hammering device comprising:a cylinder;a piston slidingly fitted in the cylinder;a piston front chamber and a piston rear chamber which are defined between an outer circumferential surface of the piston and an inner circumferential surface of the cylinder and disposed separately from each other at front and rear, respectively, in an axial direction of the piston;a switching-valve mechanism driving the piston by switching at least one of the piston front chamber and the piston rear chamber into communication with at least one of a high pressure circuit and a low pressure circuit; anda piston control port arranged between the piston front chamber and the piston rear chamber of the cylinder and connected to/disconnected from the high pressure circuit and the low pressure circuit by forward movement/backward movement of the piston, the switching-valve mechanism being driven by pressurized oil supplied/discharged from the piston control port,wherein the hydraulic hammering device comprises an urging unit disposed behind the piston and configured to come in contact with the piston during a ...

Handheld pneumatic power tool apparatus

A handheld pneumatic power tool apparatus is provided for use with a supply of pressurized air. The apparatus includes a handpiece and a pressure regulator assembly for regulating the pressure of air supplied to the handpiece. The handpiece includes a cylinder having first and second ends, an anvil positioned at the first end of the cylinder, and a piston received in the cylinder for bi-directional oscillating movement between the ends. The pressure regulator assembly includes a valve for controlling air flow to the handpiece, a pressure sensing element for sensing the pressure of the air supplied to the handpiece and for automatically controlling the valve in response to the sensed pressure, a compression spring for biasing the pressure sensing element against the pressure of the air supplied to the handpiece, and a foot pedal operatively connected to the compression spring for adjusting the force exerted by the spring on the pressure sensing element in order to adjust the regulated pressure of the supplied air.

Slagverktyg.

Hammer device

Hammer device comprising a machine housing (1) with a hammer piston (2) movable to-and-fro. The movement to-and-fro of the hammer piston is controlled by a valve body (6) movable to-and-fro in the machine housing. In order to speed up the turning of the hammer piston at its rear end position the machine housing is provided with a room (10) which by the hammer piston is separated from connection with the valve body (6) at the same time as the rear end surface (5) is supplied with pressure fluid via a connection (11) opened by the hammer piston to the pressure source (8) when the hammer piston approaches its rear end position.

控制阀、撞击装置以及用于控制撞击装置的工作循环的方法

本发明涉及一种控制阀、撞击装置以及用于控制撞击装置的工作循环的方法。用于破碎岩石的撞击装置(1)包括冲击元件(8)，其利用控制阀(2)进行控制。该控制阀包括控制元件(5)，该控制元件设置为控制通向冲击元件(8)的工作压力表面(9)的通道(7b)。控制元件向其极限位置的运动设置为形成关闭的压力空间，其中压力介质压缩并且将控制元件的动能转化成压能。当控制元件改变其方向时该压能再次转化成动能并且加以利用。

Pneumatic hammer

FIELD: construction equipment.SUBSTANCE: invention can be used as a pneumatic hammer for destruction of stone quarry gangways, frozen soil, concrete foundations, road pavements and similar materials and structures. Pneumatic hammer comprises an air-hammer mechanism of throttle valve type. Proposed tool comprises working tool with shank end, cylindrical case, barrel with air feed channel, annular flange with central bore and intake throttle channel, end prechamber, formed between the shell and the annular flange, a hammer in the housing with a through axial hole and a bypass channel on the side surface and dividing the housing cavity into the working and idle chambers, installed in central hole of annular flange rod-tube, passed through central hole in sleeve and fixed relative to it, radial outlet channel in rod-tube with its continuation in form of axial longitudinal channel with outlet into atmosphere. Rod-tube on the side of the end prechamber is equipped with a radial throttling channel of air inlet with its continuation in the form of a longitudinal channel with output to the idle stroke chamber.EFFECT: invention allows increasing kinetic energy of single impact and reducing specific air flow rate.1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 728 064 C2 (51) МПК E21C 37/24 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21C 37/24 (2020.02); B25D 9/14 (2020.02); B25D 9/26 (2020.02) (21)(22) Заявка: 2017117364, 18.05.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 28.07.2020 (43) Дата публикации заявки: 19.11.2018 Бюл. № 32 (45) Опубликовано: 28.07.2020 Бюл. № 22 2 7 2 8 0 6 4 R U (54) Пневматический молот (57) Реферат: Изобретение относится к строительной технике и может быть использовано в качестве пневматического молота для разрушения каменных карьерных негабаритов, мерзлого грунта, бетонных фундаментов, дорожных покрытий и тому подобных материалов и ...

液压式冲击装置

本发明提供一种提升冲击效率且低成本的液压式冲击装置。活塞(200)在其大径部具有阀切换槽(205)，缸体(100)在与阀切换槽(205)相对应的位置具有3个控制口(112、113、114)，切换阀机构(210)具有始终对阀(300)朝向一个方向施力的阀施力部件和在供给压力油时克服阀施力部件的作用力而使阀(300)向相反方向移动的阀控制部件。阀控制口(114)以能够向阀控制部件供给压力油的方式与该阀控制部件连通，并且与活塞前室(110)、后室(111)相互隔绝，活塞后退控制口(113)和活塞前进控制口(112)通过与阀切换槽(205)的前后移动相应地只有任一个口与阀控制口(114)连通。

Pneumatic impact mechanism

FIELD: construction.SUBSTANCE: invention relates to the field of construction equipment and can be used as a pneumatic hammer for destruction of quarry lumps, frozen soil, concrete foundations, road pavement, and so forth of materials and structures. Pneumatic mechanism of impact action comprises housing with cylindrical cavity, working tool with shank, sleeve with central hole and throttling inlet channel, end prechamber of network air formed between shell and annular flange, arranged in cylindrical housing striker, having a through axial opening and a channel-bypass groove at the hammer end on the side of the annular flange and on the hammer side surface and dividing the cylindrical housing cavity into the working and idle travel chambers, rod-tube installed in the central hole of the ring flange and passed through the central hole in the barrel. In the idle stroke chamber there is a recess interacting with the hammer channel-bypass groove. In rod-tube it is made with possibility to open end of striker from side of working tool shank radial channel of outlet with its continuation in the form of axial longitudinal channel, leaving into atmosphere. Annular afterburning chamber is formed between shell and housing. Annular flange is equipped with side wall with radial channel of bypass made therein for constant communication of end prechamber of network air with annular afterburning chamber. In the working stroke chamber on the side of the annular flange there is an annular braking chamber and an annular distribution chamber in the form of annular grooves separated by a collar. In the housing wall at the level of the annular distribution chamber and the annular braking chamber there are through radial bypass channels for constant connection with the annular afterburner chamber. Idle stroke chamber is communicated with the annular distributing chamber and the annular braking chamber in the striker position resting on the working tool shank. Channel-bypass groove on the ...

Пневматический молот

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 117 364 A (51) МПК E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017117364, 18.05.2017 Приоритет(ы): (22) Дата подачи заявки: 18.05.2017 (43) Дата публикации заявки: 19.11.2018 Бюл. № Адрес для переписки: 630008, г. Новосибирск, ул. Ленинградская, 113, НГАСУ (Сибстрин), отдел ПЛР R U (57) Формула изобретения Пневматический молот, включающий пневмоударный механизм дроссельноклапанного типа, содержащий рабочий инструмент с хвостовиком, цилиндрический корпус, стакан с каналом подвода воздуха из сети, закрепленный разъемно относительно цилиндрического корпуса, кольцевой фланец с центральным отверстием и дроссельными каналами впуска, торцевую предкамеру, образованную между стаканом и кольцевым фланцем, размещенный в цилиндрическом корпусе ударник со сквозным осевым отверстием и перепускным глухим каналом на боковой поверхности и разделяющий полость цилиндрического корпуса на камеры рабочего и холостого хода, установленную в центральном отверстии кольцевого фланца стержень-трубку, пропущенную через центральное отверстие в стакане и закрепленную относительно его, выточку в камере холостого хода, взаимодействующую с перепускным каналом в виде канала-лыски, либо канала-паза на боковой поверхности ударника, радиальный канал выпуска в стержне-трубке с его продолжением в виде продольного канала с выходом в атмосферу и открываемый торцом ударника со стороны хвостовика рабочего инструмента, дополнительную кольцевую предкамеру, образованную между стаканом и цилиндрическим корпусом, каналом перепуска в боковой стенке кольцевого фланца, постоянно сообщающим торцевую предкамеру с дополнительной кольцевой предкамерой, кольцевую камеру и кольцевую аккумуляционную камеру в виде кольцевых выточек, разделенных кольцевым буртиком, сквозные перепускные каналы в стенках выточек, постоянно сообщающие кольцевую камеру торможения и кольцевую аккумуляционную камеру с ...

Пневматический молот

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 135 566 A (51) МПК B25D 9/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015135566, 21.08.2015 Приоритет(ы): (22) Дата подачи заявки: 21.08.2015 (43) Дата публикации заявки: 03.03.2017 Бюл. № 07 R U (57) Формула изобретения Пневматический молот, содержащий цилиндрический корпус с втулкой и выпускными каналами, рабочий инструмент с хвостовиком, ступенчатый ударник, выполненный со штоковой и поршневой частями, с центральным каналом и размещенной в центральном канале его штоковой части втулкой с продольным каналом-пазом в ее отверстии, и разделяющий полость цилиндрического корпуса на кольцевую распределительную камеру, образованную цилиндрическим корпусом и втулкой со стороны штоковой части ступенчатого ударника, и камеру холостого хода, образованную со стороны хвостовика рабочего инструмента, кольцевой фланец с отверстиями подвода воздуха в кольцевую распределительную камеру и сквозным осевым каналом для пропуска стержня с запорным клапаном, крепежный стакан с воздухоподводящим каналом, закрепленный относительно цилиндрического корпуса, камеру сетевого воздуха, образованную крепежным стаканом и кольцевым фланцем, закрепленный в сквозном осевом канале кольцевого фланца стержень с запорным клапаном, постоянно взаимодействующим с продольным каналом-пазом в отверстии втулки и периодически соединяющий в зависимости от положения ступенчатого ударника, кольцевую распределительную камеру и камеру холостого хода между собой, отличающийся тем, что камера холостого хода выполнена с выпускным каналом, на внешней поршневой части ступенчатого ударника выполнена кольцевая выточка, в поршневой части ступенчатого ударника со стороны центрального канала с выходом в упомянутую выточку выполнен радиальный канал, периодически сообщающийся с выпускным каналом камеры холостого хода и атмосферой. Стр.: 1 A 2 0 1 5 1 3 5 5 6 6 A (54) ПНЕВМАТИЧЕСКИЙ МОЛОТ 2 0 1 5 1 3 5 5 6 6 (72) Автор( ...

Hydropneumatic percussive device

Hydraulic rock breaker

FIELD: process engineering. SUBSTANCE: invention relates to percussion tools, namely, hydraulic rock breakers. Proposed device comprises one-piece case with piston and piston rod, moving hammer, working tool and pressure conversion piston. Gas chamber is arranged between case, pressure conversion piston and hammer. Pressure conversion cylinder and compensation chamber are arranged between pressure conversion piston and piston rod. Connection channel is made between gas and compensation chambers. EFFECT: decreased weight and sizes, smaller recoil pulses. 6 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 449 882 (13) C2 (51) МПК B25D 9/04 (2006.01) B25D 9/20 (2006.01) B25D 9/26 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010103146/02, 08.07.2008 (24) Дата начала отсчета срока действия патента: 08.07.2008 (73) Патентообладатель(и): КОНЕК с.р.о. (SK) R U Приоритет(ы): (30) Конвенционный приоритет: 09.07.2007 SK PP 93-2007 (72) Автор(ы): КОНЕЧНИК Штефан (SK) (43) Дата публикации заявки: 20.08.2011 Бюл. № 23 2 4 4 9 8 8 2 (45) Опубликовано: 10.05.2012 Бюл. № 13 (56) Список документов, цитированных в отчете о поиске: US 5113950 A, 19.05.1992. SU 859622 A1, 30.08.1981. SU 845796 A3, 07.07.1981. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 09.02.2010 2 4 4 9 8 8 2 R U (87) Публикация заявки РСТ: WO 2009/008844 (15.01.2009) C 2 C 2 (86) Заявка PCT: SK 2008/000008 (08.07.2008) Адрес для переписки: 400096, г.Волгоград, а/я 4, пат.пов. Б.И.Машкину (54) ГИДРАВЛИЧЕСКИЙ ОТБОЙНЫЙ МОЛОТОК (57) Реферат: Изобретение относится к ударным устройствам, а именно к гидравлическим отбойным молоткам. Отбойный молоток содержит монолитный корпус с поршневым штоком и поршнем, подвижным ударником, рабочим инструментом и поршнем преобразователя давления. Между корпусом, поршнем преобразователя давления и ударником образована газовая камера. Между поршневым штоком и поршнем преобразователя ...

液压式冲击装置

一种液压式冲击装置，在不变更油压回路配置并且维持冲击能量的同时，使活塞冲程短冲程化来增大冲击输出。所述液压式冲击装置具备：活塞前室(110)和活塞后室(111)，划分在活塞(200)的外周面和气缸(100)的内周面之间，并沿轴向的前后隔开配置；切换阀机构(130)，将活塞前室(110)和活塞后室(111)中的至少一方切换至高压回路(101)和低压回路(102)中的至少一方而驱动活塞；以及增速活塞(410)，设置于活塞后方，在其后退行程的中途抵接于活塞而对活塞(200)向前方施力，增速活塞(410)被设定为自身于活塞开始抵接的定时比活塞(200)通过切换阀机构(130)受到制动的定时早。

Control valve in a percussion device and a method comprising a closed pressure space at the end position of the piston

본 발명은 제어밸브, 충격장치 및 충격장치의 작동 사이클의 제어방법에 관한 것이다. 암반 파쇄용 충격장치 (1) 는 제어밸브 (2) 의해 제어되는 충격부재 (8) 를 포함한다. 제어밸브는 충격부재 (8) 의 작동압력면 (9) 으로 이어진 채널 (7b) 을 제어하도록 배치된 제어부재 (5) 를 포함한다. 말단 위치로의 제어부재의 이동이 폐쇄된 압력 공간부를 형성하도록 배치되고, 이 공간부에서 압력매체가 압축되어 제어부재의 운동에너지를 압력에너지로 전환시킨다. 압력에너지는 제어부재의 방향이 바뀔 때 운동에너지로 재전환되어 이용된다. The present invention relates to a control valve, a shock device and a control method of an operating cycle of the shock device. The rock fracture impact device 1 includes an impact member 8 controlled by a control valve 2. The control valve comprises a control member 5 arranged to control the channel 7b leading to the working pressure surface 9 of the impact member 8. The movement of the control member to the distal position is arranged to form a closed pressure space, in which the pressure medium is compressed to convert the kinetic energy of the control material into pressure energy. The pressure energy is converted into kinetic energy and used when the direction of the control member changes. 충격장치, 제어밸브, 제어방법. Impact device, control valve, control method.

충격 장치

충격 장치(2)는, 타격 피스톤(5), 타격 피스톤(5)의 왕복 운동을 제어하는 제어 분배기(11), 및 타격 피스톤(5)의 타격 행정을 변화시키는 제어 장치(15)를 포함한다. 이 제어 장치(15)는, 복수의 제 1 제어 채널(18a, 18b, 18c), 제어 분배기(11)에 연결되는 제 2 제어 채널(19), 복수의 제어 위치 사이에서 움직일 수 있게 장착되는 제어 슬라이드(16), 및 이 제어 슬라이드에 의해 형성된 수용 하우징 안에 장착되는 조절 슬라이드(34)를 포함하고, 제어 슬라이드(16)와 조절 슬라이드(34)는, 제 2 제어 채널(19)에 연결되어 있는 제 1 조절 챔버(36), 및 고압 유체 공급 회로(12)에 연결되어 있는 제 2 조절 챔버(37)를 형성한다. 제어 슬라이드(34)는, 제 1 조절 챔버(36)와 제 2 조절 챔버(37)가 서로 연결되는 제 1 위치와, 제 1 조절 챔버(36)와 제 2 조절 챔버(37)가 서로 격리되는 제 2 위치 사이에서 움직일 수 있게 장착된다.

Деструктивный гидромолот

1. Деструктивный гидромолот, имеющий монолитный несущий цилиндрический корпус, содержащий цилиндрические поршневой шток, подвижный ударник и рабочий инструмент, приводимые в действие впуском и выпуском напорной рабочей жидкостью, отличающийся тем, что в части несущего корпуса (1) находится неподвижно расположенный поршневой шток (2) с поршнем (21), на который установлено подвижное клапанное кольцо - клапанная кольцевая втулка (23), укороченный и в осевом направлении жесткий ударник (3), введенный во втулку (24) ударника, поршень (25) мультипликатора, причем в другой части несущего корпуса находятся рабочий инструмент (4), свободно выставленный во втулку (27) инструмента, защищенную с внешней стороны посредством уплотнительной крышки (29), при этом таким размещением между несущим корпусом, поршнем мультипликатора и ударником образована газовая камера (45), между поршневым штоком и поршнем мультипликатора образован цилиндр (43) мультипликатора и компенсационная камера (44), а между газовой камерой и компенсационной камерой образован соединяющий канал (26). ! 2. Деструктивный гидромолот по п.1, отличающийся тем, что цилиндрический корпус ударника имеет выполненное по оси внутреннее заглубление диаметром, соответствующим диаметру поршневого штока, при этом выставленный в заглублении поршневой шток образует замкнутую полость, разделенную поршнем на первую камеру (41) и вторую камеру (42), причем поршневой шток в полости первой камеры имеет на поверхности сплошной участок ограниченной длины с уменьшенным диаметром, на котором выставленная клапанная кольцевая втулка, имеющая протяженность большую, чем участок длины поршневого што РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 103 146 (13) A (51) МПК B25D 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2010103146/02, 08.07.2008 (71) Заявитель(и): КОНЕК с.р.о. (SK) Приоритет(ы): (30) Конвенционный приоритет: 09.07.2007 SK PP 93-2007 (72) ...

유압 충격 해머

본 발명은 충격 피스톤(1)의 운동이 메인 밸브(3)에 의해 제어되고, 제어 운동은 제어 밸브(9)에 작용하는 압력이 사전설정된 값까지 상승할 때 메인 밸브가 그 상태를 변경시킬 수 있도록 분리되어 있는 제어밸브(9)에 의해 제어되는 유압 충격 해머 충격 해머는 복귀관(13)내에 장착된 제어기(21)를 포함하며, 축압기(7)의 충전물 및 충격 피스톤(1)의 복귀 동작의 길이가 제어기(21)에 의해 제공되는 유동 저항에 비례하도록 제어기에 의해 충격 해머로부터 유출되는 압력 유체를 조정한다.

Stepless variable auto stroke hydraulic breaker system

본 발명은 치즐이 암반을 포함하는 파쇄 대상물을 파쇄할 시에 발생하는 진동을 진동센서를 이용하여 진동횟수를 감지하고 상기 진동횟수가 선정된 횟수를 초과하지 않으면 쇼트 스트로크(Short Stroke)로 작업을 진행하다가 상기 진동횟수가 선정된 횟수를 초과하면 쇼트 스트로크에서 롱 스트로크(Long Stroke)로 자동 전환시킴으로써, 공타시 반사되는 타격에너지를 저하시킬 수 있는 무단 가변 자동 스트로크 유압 브레이커 시스템에 관한 것으로, 치즐(308)이 암반을 포함하는 파쇄 대상물을 파쇄할 시에 발생하는 진동을 감지하기 위한 진동센서(110)와; 상기 진동센서(110)를 구비하고 상기 진동센서(110)로부터 발생된 신호를 전송하기 위한 송신부(100)와; 상기 송신부(100)에서 전송된 신호를 수신하기 위한 수신부(200); 및 상기 수신부(200)의 수신 MCU(240)에 의해 제어되는 무단 가변 자동스트로크 유압 브레이커(300);로 구성되고, 상기 무단 가변 자동스트로크 유압 브레이커(300)는 실린더(301)와, 상기 실린더(301) 내에 수용되어 내부에서 축방향으로 왕복운동하고, 인가된 압력이 복귀 스트로크 방향으로 작용하도록 배향된 제1 피스톤 면(302a)과, 인가된 압력이 작동 스트로크 방향으로 작용하도록 배향된 제2 피스톤 면(302b) 및, 상기 제1 피스톤 면(302a)과 제2 피스톤 면(302b) 사이에 위치되는 원주홈(303)을 구비한 피스톤(302)과, 상기 실린더(301)에 연결된 출구를 통하여 작동 압력을 제공하기 위한 압력도관(312)과, 상기 실린더(301)에 연결된 출구를 통하여 압력을 감압하기 위한 감압복귀 도관(317)과, 제어 플런저(309a)가 내부에 위치되고, 상기 제어 플런저(309a)를 복귀 스트로크 위치로 보내기 위한 작은 제어 플런저면(309b) 및, 상기 제어 플런저(309a)를 작동 스트로크 위치 및 복귀 스트로크 위치로 보내기 위한 큰 제어 플런저면(309c)을 구비한 제어밸브(309)와, 입력측이 스트로크 제어 압력도관(321)에 의해 유압펌프(311)에 연결된 압력 도관(312)에 연결되고, 출력측이 상기 제어 밸브(309)와 연결된 추가의 도관(322)에 의해 제어 밸브(309)용 전환 도관(313)에 연결되며, 하측이 수신 MCU(240)의 제어하게 작동되는 유압 제어 밸브(320)에 의해 유압펌프에 연결된 스트로크 밸브(319) 및 상기 스트로크 밸브(319)의 상부면(319a)에 설치되어 유압 변화에 따른 기계적 재설정 기능을 부여하기 위한 스프링(323)을 포함하는 것을 특징으로 한다. The present invention relates to a vibration sensor for detecting vibration generated when a crushing object including a rock is crushed by using a vibration sensor, and when the vibration frequency does not exceed the predetermined number of times, a short stroke Stroke hydraulic hydraulic breaker system capable of reducing the striking energy reflected at the time of striking by automatically switching from a short stroke to a long stroke when the number of times of vibration exceeds a predetermined number, 308) for detecting vibrations generated when the crushing object including the rock is crushed; A transmitter 100 having the vibration sensor 110 for transmitting a signal generated from the vibration ...

Hydraulic impact arrangement

A hydraulic percussion apparatus comprising a body, a cylinder in the body and a percussion piston reciprocating in the cylinder. A distributing valve moves in a valve housing. A valve for starting and stopping the percussion apparatus is provided. A hydraulic pump and hydraulic channels form a percussion circuit with a gas/liquid pressure accumulator. A distributing valve circuit and a free circulation circuit are provided for the pump which are parallelly coupled with the percussion circuit, which circuits are connected to the pump and to the start-and-stop valve which has positions for controlling pressure in the circuits. The start-and-stop valve has a middle position during which pressure in the percussion circuit rises up to a predetermined value while the distributing valve circuit remains closed independent of the pressure in the percussion circuit.

Pneumatic hammer

FIELD: manufacturing technology. SUBSTANCE: invention relates to pneumatic hammer. Pneumatic hammer contains cylindrical housing, working tool, rod with shutoff valve, stepped striker with rod and piston parts, with central channel and bushing with longitudinal slot channel in its hole arranged in its rod part central channel. Stepped striker divides cylindrical housing cavity on annular distribution chamber and idle stroke chamber. Rod with shutoff valve constantly interacts with longitudinal slot channel in bushing hole and, depending on stepped striker position, periodically connects annular distribution chamber and idle stroke chamber to each other. Idle stroke chamber is made with discharge channel. On stepped striker outer piston part annular groove is made. In stepped striker piston part on central channel side with output to said groove radial channel is made, periodically communicated with idle stroke chamber discharge channel and atmosphere. EFFECT: result is elimination of stepped striker repeated impacts on cylindrical housing. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 612 889 C2 (51) МПК B25D 9/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015135566, 21.08.2015 (24) Дата начала отсчета срока действия патента: 21.08.2015 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 21.08.2015 (43) Дата публикации заявки: 03.03.2017 Бюл. № 7 Адрес для переписки: 630049, г. Новосибирск, ул. Дуси Ковальчук, 191, ФГБОУ ВПО "Сибирский государственный университет путей сообщения", Патентноинформационный отдел (56) Список документов, цитированных в отчете о поиске: RU 2477778 C2, 20.03.2013. RU 2361723 C1, 20.07.2009. DE 546489 A, 14.03.1932. 2 6 1 2 8 8 9 (45) Опубликовано: 13.03.2017 Бюл. № 8 (73) Патентообладатель(и): Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный университет ...

Device for pneumatic impact mechanism with throttling air distribution

FIELD: construction; mining industry. SUBSTANCE: invention relates to pneumatic impact devices. Device comprises a cylindrical housing with outlet channels, an annular flange with a through central hole, a cover with an inlet, a working tool with a shank, step striker with rod and piston parts, rod in central hole of annular flange with piston part with inclined channel groove, constantly located in through axial hole of stepped striker, sleeve of cylindrical housing with hole in sleeve, annular neck, limiting the movement value of stepped striker, barrel fixed to cylindrical housing with air supply channel, annular distribution chamber in cylindrical housing bushing, network air chamber between shell and cover, between the cover plate and the annular flange, the idle stroke chamber on the side of the annular flange, the idle stroke chamber on the side of the working tool shank retained by the spring relative to the cylindrical body. Channel-groove on side surface of piston part of rod has variable geometrical cross-section, increasing from the side surface of the piston part from the side of the rod to the end of its piston part from the side of the through axial bore of the stepped drummer. Between the rod part of the stepped impactor and the cylindrical body, on the side of the annular isthmus of the sleeve, an annular controlled working stroke chamber is formed, and on the side surface of the rod part of the stepped striker there is an air bypass channel in the form of a tier of annular cylindrical controlled channel-recesses, separated by bridges along generatrix of stock part of step striker with varying geometrical cross-section area and so that length of tier cylindrical controlled air bypass channel-recesses, separated by bridges, depending on the position of stepped hammer, sufficient for periodic communication of annular distribution chamber and circular controlled chamber of working stroke between each other. EFFECT: higher efficiency of using internal ...

DEVICE FOR CREATING A RETURNING AND ACCESSIBLE MOVEMENT, VALVE BLOCK FOR HIM AND PNEUMATIC TOOL

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 128 390 (13) A B 25 D 9/20, 9/12 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004128390/02, 01.03.2003 (71) Çà âèòåëü(è): ÀéÏèÒè Òåêíîëîäæèñ ÀÁ (SE) (30) Ïðèîðèòåò: 05.03.2002 EP 02445029.8 (72) Àâòîð(û): ÒÎÐÍÎÊÂÈÑÒ Ïèòåð (SE) (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 05.10.2004 (74) Ïàòåíòíûé ïîâåðåííûé: Ìîæàéñêèé Ìèõàèë Àíäðååâè÷ (86) Çà âêà PCT: EP 03/02118 (01.03.2003) Àäðåñ äë ïåðåïèñêè: 190000, Ñàíêò-Ïåòåðáóðã, íàá. Ìîéêè, 58, Ïàòåíòèêà, ïàò.ïîâ. Ì.À.Ìîæàéñêîìó (54) ÓÑÒÐÎÉÑÒÂÎ ÄËß ÑÎÇÄÀÍÈß ÂÎÇÂÐÀÒÍÎ-ÏÎÑÒÓÏÀÒÅËÜÍÎÃÎ ÄÂÈÆÅÍÈß, R U Ôîðìóëà èçîáðåòåíè 1. Óñòðîéñòâî äë ñîçäàíè âîçâðàòíî-ïîñòóïàòåëüíîãî äâèæåíè , ïðèâîäèìîå â äåéñòâèå ñæàòîé òåêó÷åé ñðåäîé, êîòîðîå ñîäåðæèò ïåðâóþ (5) è âòîðóþ (3) ÷àñòè, ñïîñîáíûå ïåðåìåùàòüñ â îñåâîì íàïðàâëåíèè îòíîñèòåëüíî äðóã äðóãà, è â êîòîðîì èìååòñ ðàáî÷à êàìåðà (7), âûïîëíåííà ñ âîçìîæíîñòüþ ïîâûøåíè â íåé äàâëåíè , ÷òî âûçûâàåò ïåðåìåùåíèå óêàçàííûõ ÷àñòåé îòíîñèòåëüíî äðóã äðóãà, èëè ñíèæåíè äàâëåíè ; â ïåðâîé ÷àñòè (5) èìååòñ ïåðâûé êàíàë (6) äë ïîäà÷è ðàáî÷åé òåêó÷åé ñðåäû â ðàáî÷óþ êàìåðó (7), à âî âòîðîé ÷àñòè (3) èìååòñ âòîðîé êàíàë (15) äë âûïóñêà òåêó÷åé ñðåäû èç ðàáî÷åé êàìåðû (7), ïðè÷åì êëàïàííûé áëîê (8), ñîäåðæàùèé êëàïàííûå çàòâîðû, óñòàíîâëåííûå ñ âîçìîæíîñòüþ ïåðåìåùåíè îòíîñèòåëüíî óêàçàííûõ ÷àñòåé, ïðåäíàçíà÷åí äë óïðàâëåíè ïîòîêîì òåêó÷åé ñðåäû â ïåðâîì è âòîðîì êàíàëàõ â çàâèñèìîñòè îò îòíîñèòåëüíîãî ïîëîæåíè óêàçàííûõ ÷àñòåé è, òàêèì îáðàçîì, äë óïðàâëåíè ïîâûøåíèåì äàâëåíè â ðàáî÷åé êàìåðå, îòëè÷àþùååñ òåì, ÷òî êëàïàííûé áëîê ñîäåðæèò ñðåäñòâà óïðàâëåíè , ïðèñîåäèíåííûå ïî ìåíüøåé ìåðå ê îäíîìó èç äâóõ êëàïàííûõ çàòâîðîâ, òàê ÷òî êëàïàííûå çàòâîðû îòäåëåíû äðóã îò äðóãà â îñåâîì íàïðàâëåíèè, â ðåçóëüòàòå ÷åãî âõîä òåêó÷åé ñðåäû â ðàáî÷óþ êàìåðó (7) èç ïåðâîãî êàíàëà îòäåëåí îò âûõîäà òåêó÷åé ñðåäû èç ðàáî÷åé êàìåðû (7) âî âòîðîé êàíàë (15). 2. Óñòðîéñòâî ïî ï. ...

Apparatus for providing reciprocation motion, valve unit for such apparatus and pneumatic tool with such apparatus

Изобретение относится к пневматическим инструментам, содержащим устройство для создания возвратно-поступательного движения, приводимого в действие сжатой текучей средой. Устройство для создания возвратно-поступательного движения содержит первую и вторую части, рабочую камеру и клапанный блок. Первая и вторая части устройства выполнены с возможностью перемещения друг относительно друга в осевом направлении. Рабочая камера выполнена с возможностью повышения в ней давления для перемещения указанных первой и второй частей устройства друг относительно друга или снижения в ней давления. Первая часть устройства имеет первый канал для подачи рабочей текучей среды в рабочую камеру. Вторая часть устройства имеет второй канал для выпуска текучей среды из рабочей камеры. Клапанный блок содержит клапанные затворы, установленные с возможностью перемещения относительно первой и второй частей устройства, и средства управления, присоединенные по меньшей мере к одному из двух клапанных затворов. Клапанные затворы отделены друг от друга в осевом направлении для обеспечения отделения входа текучей среды в рабочую камеру из первого канала от выхода текучей среды из рабочей камеры во второй канал. При этом клапанный блок обеспечивает управление потоком текучей среды в первом и втором каналах в зависимости от относительного положения первой и второй частей устройства, а также управление повышением давления в рабочей камере. В результате повышается эффективность работы, уменьшаются габариты устройства, обеспечивается простота и дешевизна его изготовления. 2 н. и 11 з.п. ф-лы, 5 ил. ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 317 191 (13) C2 (51) ÌÏÊ B25D 9/20 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004128390/02, 01.03.2003 (72) Àâòîð(û): ÒÎÐÍÎÊÂÈÑÒ Ïèòåð (SE) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 01.03.2003 (73) Ïàòåíòîîáëàäàòåëü(è): ÀéÏèÒè Òåêíîëîäæèñ ÀÁ (SE) R U (30) Êîíâåíöèîííûé ...

Air-distributing device of impact-action pneumatic machines

The portable compressed-air impact tool has a striker piston reciprocating in a housing to form working chambers of variable volume. The housing has a distributor chamber connected to the working chambers and to the compressed air supply in turn by a valve working in it. The valve (22) is a cylindrical sleeve, enclosing one or more openings (32) with its inner surface, through which the air is delivered to the distributor chamber (19). This opening leads to one or more lengthwise channels (29) formed in the valve, permanently connected to the compressed air supply, and delivering to the working chamber inlet passages (25, 26).

Hydraulic percussion machine

Изобретение относитс  к горной промышленности , а именно к устройствам ударного действи  дл  разрушени  горных пород. Цель изобретени  - повышение срока службы устройства за счет исключени  кавитации рабочей жидкости. Гидравлическое устройство ударного действи  содержит корпус 1, в полости которого расположен с возможностью осевого перемещени  и взаимодействи  с инструментом 2 боек (Б) 4, имеющий бурт (БУ) 3. Корпус 1 и Б 4 образуют верхнюю 5, среднюю 6 и ; i нижнюю (НК) 7 камеры. Камера 5 заполнена газом. Камера 6 св зана со сливной магистралью 11, Через золотник 10 НК 7 попеременно св зана со сливной 11 и напорной 12 магистрал ми, 8.полости корпуса 1 коакси- ально Б 4 со стороны НК 7 с возможностью осевого перемещени  установлен полый поршень (П) 17. Устройство имеет несколько вариантов выполнени . Установлен П 17 может быть под БУ 3, на БУ 3. Выполнен П 17 может быть с ограничительным по ском, При выполнении БУ 3 с первой ступенью П 17 выполнен с диаметром внутренней поверхности , ответным диаметру этой ступени , выполненной длиной,по величине не меньшей длины П 17 до ограничительного по ска. Шток Б 4 может быть выполнен с проточкой, ширина которой по величине больше ширины ограничительного по ска П 17. При выполнении БУ 3 со второй ступенью П 17 выполн етс  с ответной этой ступени расточкой. При отскоке Б 4 после удара по инструменту 2 И. 17 продолжает движение вниз и преп тствует возникновению кавитации в НК 7. Затем поддействием давлени  масла П 17 поднимаетс  до контакта с Б 4. 5 з.п. ф-лы, 14 ил. tf.tf В & fsl х|

Hydraulic Breaker

본 발명은 유압 브레이커에 관한 것으로, 실린더와, 피스톤과, 치즐과, 백헤드와, 실린더 부쉬, 및 밸브를 포함한다. 밸브는 실린더 부쉬의 내측면과 실린더 내경부에 상하 방향으로 이동 가능하게 설치된다. 밸브는 상단면에 실린더 상실의 압력이 작용하는 밸브 상측부와, 하단면에 실린더 상실의 압력이 작용하는 밸브 하측부와, 밸브 상측부와 밸브 하측부 사이에서 밸브 상측부와 밸브 하측부보다 큰 외경으로 확장되어 제1 상측 밸브 수압면이 제1,2 유로와 연통되는 제1 밸브 확경부와, 제1 밸브 확경부와 밸브 하측부 사이에서 제1 밸브 확경부보다 큰 외경으로 확장되어 제2 상측 밸브 수압면이 제4 유로와 연통되고 제1 상측 밸브 수압면보다 넓은 면적의 하측 밸브 수압면에 밸브 전환실의 압력이 작용하는 제2 밸브 확경부를 포함한다.

Device for pneumatic impact mechanism

FIELD: construction. SUBSTANCE: invention relates to the field of construction and mining, in particular, to pneumatic devices of percussive action. Device comprises a cylindrical housing with outlet channels, an annular flange with a through central hole, a cover with an inlet, a working tool with a shank, step striker with rod and piston parts, rod installed in central hole of annular flange with piston part with inclined channel-groove, constantly located in through axial hole of step striker, bushing of cylindrical housing with hole for passage of rod part of stepped striker, forming in bushing annular neck, limiting value of movement of step striker, barrel fixed to cylindrical housing with air supply channel, annular distribution chamber in cylindrical housing bushing, network air chamber between shell and cover, between the cover and the annular flange between the cover plate and the antechamber, and the idle stroke chamber on the side of the working tool shank retained by the spring relative to the cylindrical body. Channel-groove on rod piston part side surface features varying geometrical cross-section increasing from piston part side surface on rod side to the piston part end on the side of through axial bore of stepped hammer. Between ring part of stepped striker and cylindrical housing on the side of annular isthmus of sleeve there is an annular controlled chamber of working stroke. On stepped striker rod part side surface cylindrical annular channel-bypass of air bypass along generatrix of rod part of step striker is made and so that length of annular channel-groove of air bypass depending on position of stepped striker is sufficient for periodic air bypass when annular distribution chamber and annular controlled chamber of working stroke are interconnected. EFFECT: higher efficiency of using internal air energy of annular controlled chamber of working stroke, higher efficiency of pneumatic percussive mechanism operating process, reduction of negative ...

Method of generating loading impulse in instrument using impact device activated by pressure fluid, and pressure device

FIELD: physics; mechanics. SUBSTANCE: present invention pertains to generating a loading impulse in an instrument using an impact device activated by a pressure fluid, particularly boring machines or perforators. According to the invention the instrument is brought into contact with material, subjected to impact action, for processing the material. The pressure fluid is put into the impact device and released from it to activate the impact device. The impact device comprises a frame, to which in the longitudinal direction the instrument is fixed. During impact the instrument is brought into contact with the material, subjected to the impact action, and the apparatus for letting the pressure fluid into the impact device and releasing the pressure fluid from it, so as to activate the impact device. The impact device comprises a working chamber and an apparatus for transmitting the pressure fluid in form of pressure impulses into the working chamber, located between the frame of the impact device and the instrument. The pressure fluid is transmitted in form of pressure impulses into the working chamber such that, pressure of the fluid creates a force between the frame of the impact device and the instrument. That force presses the instrument to the processed material such that, under the effect of that force in the instrument, in its longitudinal direction, a loading impulse is generated, and the loading impulse propagates in the instrument to the processed material. Generation of the loading impulse practically stops at exactly that moment, when the force stops acting on the instrument. EFFECT: reduced adverse effects of dynamic forces, arising from the operation of the impact device. 35 cl, 6 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 341 635 (13) C2 (51) ÌÏÊ E21B 1/28 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2006103359/03, 06.07.2004 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà ...

Impact device

FIELD: process engineering. ^ SUBSTANCE: invention relates to impact device. Proposed device comprises housing and impact piston arranged therein to reciprocate forced by operating fluid. Housing accommodates first and second operating fluid chambers, control valve arranged around impact piston ear end to move along impact piston, and operating fluid channels. Impact piston read end has annular surface that faces control valve. Control valve inner surface has annular surface facing impact piston. With aforesaid annular surfaces aligned, they throttle operating fluid flow between impact piston and control valve. At impact piston back stroke start, control valve stays at extreme rear position. With impact piston displaced into preset position, rear annular surface is aligned with that on control valve inner surface. With impact piston travelling on, pressure in operating fluid second chamber increases. Pressure acting on control valve surface from the side of second chamber makes control valve moving towards front end of impact device. ^ EFFECT: control valve position changes fast and efficient, damping pad is created for piston and valve. ^ 10 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 415 008 (13) C1 (51) МПК B25D 9/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009128073/02, 19.12.2007 (24) Дата начала отсчета срока действия патента: 19.12.2007 (72) Автор(ы): КОСКИМЯКИ Антти (FI), КОТАЛА Ари (FI) R U (73) Патентообладатель(и): САНДВИК МАЙНИНГ ЭНД КОНСТРАКШН ОЙ (FI) Приоритет(ы): (30) Конвенционный приоритет: 21.12.2006 FI 20065834 (45) Опубликовано: 27.03.2011 Бюл. № 9 2 4 1 5 0 0 8 (56) Список документов, цитированных в отчете о поиске: FI 20030261 A, 24.09.2004. SU 1293328 A1, 28.02.1987. RU 2167990 C2, 27.05.2001. SU 600261 A1, 30.03.1978. US 2003006052 A1, 09.01.2003. 2 4 1 5 0 0 8 R U (86) Заявка PCT: FI 2007/050703 (19.12.2007) C 1 C 1 (85) Дата начала ...

Pneumatic drop hammer

FIELD: mining pneumatic hammer drill. SUBSTANCE: casing provided with covers accommodates a hollow piston with a double-ended rod. The piston forms piston with a double-ended rod. The piston forms forward and back stroke chambers in the casing. Control valve forms in the casing control spaces that periodically communicate with compressed-air source or exhaust port. Floating pistons are installed in casing bores on the side of each cover with formation of buffer chambers with the latters. The covers have radial grooves communicating at the end of the stroke with annular recesses made on the rods. The groove for communication of the control chambers with the compressed-air source in made as an axial passage in one of the rods and radial passage in the piston. EFFECT: improved design. 3 dwg ЭУ9ЗСЗУтОСсС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ “” 2043 546 ' 13) Сл Е 15 В 15/14 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 5001433/29, 13.09.1991 (30) Приоритет: 15.09.1990 СМ 90220630.3 (46) Дата публикации: 10.09.1995 (56) Ссылки: Заявка Франции М 2552172, кл. Е 15В 15/22, 1985. (71) Заявитель: Чи-Гуо Данг[СМ] (72) Изобретатель: Чи-Гуо Дан[СМ] (73) Патентообладатель: Чи-Гуо Дан[[СМ] (54) ПНЕВМАТИЧЕСКОЕ КОПРОВОЕ УСТРОЙСТВО (57) Реферат: Использование: В рудничном пневматическом бурильном — устройстве. Сущность изобретения: в корпусе с крышками размещен полый поршень с двусторонним штоком. Поршень образует в корпусе камеры прямого и обратного хода. Распределительный золотник образует в корпусе полости управления, периодически сообщаемые с источником сжатого воздуха или ВЫХЛОПОМ. Плавающие поршни установлены в расточках корпуса со стороны каждой крышки с образованием с последними буферных камер. Крышки выполнены с радиальными каналами, сообщенными в конце хода с кольцевыми проточками, выполненными на штоках. Канал для сообщения камер управления с источником сжатого воздуха выполнен в виде осевого канала в одном ...

Pneumatic impact mechanism

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2017 120 246 A (51) МПК E21B 1/30 (2006.01) E21B 1/38 (2006.01) E21C 37/24 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2017120246, 08.06.2017 Приоритет(ы): (22) Дата подачи заявки: 08.06.2017 (43) Дата публикации заявки: 10.12.2018 Бюл. № Адрес для переписки: 630008, г.Новосибирск, ул. Ленинградская, 113, НГАСУ (Сибстрин), отдел ПЛР R U (57) Формула изобретения 1. Пневматический ударный механизм, содержащий цилиндрический корпус с выпускными каналами, кольцевой фланец со сквозным центральным отверстием, крышки с впускным отверстием, рабочий инструмент с хвостовиком, ступенчатый ударник со штоковой и поршневой частями, установленными в центральном отверстии кольцевого фланца стержень с поршневой частью с каналом-пазом, постоянно находящимся в сквозном осевом отверстии ступенчатого ударника, втулку цилиндрического корпуса с отверстием для пропуска штоковой части ступенчатого ударника и образующим во втулке кольцевой перешеек, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха в крышке со стороны кольцевого фланца, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха в крышке со стороны кольцевого фланца, камеру-ресивер между стаканом и крышкой, камеру холостого хода со стороны хвостовика рабочего инструмента; удерживаемого пружиной относительно цилиндрического корпуса, при чем канал-паз на боковой поверхности поршневой части стержня выполнен с изменяющимся геометрическим сечением, увеличивающимся от боковой поверхности поршневой части со стороны стержня до окончания его ...

Piercing apparatus

A piercing apparatus compact in size having a decreased number of hoses is suited for use as an iron runner port-opening machine for a blast furnace or the like furnace in an iron mill. The piercing apparatus executes the piercing by moving back and forth, by using a feed unit, a drifter equipped with a forward-blowing unit, a reverse-blowing unit and a rotary unit, and wherein cylinders containing a cylindrical blowing piston are provided in front of, and at the back of, a drifter body maintaining a distance relative to each other; a shank rod having, formed as a unitary structure, a blowing portion of a large diameter with blowing surfaces formed on the front and rear portions thereof and rod-like small-diameter portions protruding forward and backward beyond the blowing portion, is provided along the axial direction of the drifter body in a manner that the blowing portion is positioned between the front cylinder and rear cylinder and that the small-diameter portions on both sides are fitted to the cylindrical blowing pistons of the respective sides; and valves are provided in the outer peripheral portions of the front and rear cylinders to supply hydraulic pressure into the cylinders.

Pneumatic Impact Mechanism Device

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 111 322 A (51) МПК E21C 37/24 (2006.01) B25D 9/14 (2006.01) B25D 9/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019111322, 15.04.2019 Приоритет(ы): (22) Дата подачи заявки: 15.04.2019 (43) Дата публикации заявки: 15.10.2020 Бюл. № 29 R U (57) Формула изобретения Устройство для пневмоударного механизма, содержащее цилиндрический корпус с выпускными каналами, кольцевой фланец со сквозным центральным отверстием, крышки с впускным отверстием, рабочий инструмент с хвостовиком, ступенчатый ударник со штоковой и поршневой частями, установленными в центральном отверстии кольцевого фланца стержень с поршневой частью с наклонным каналом-пазом, постоянно находящимся в сквозном осевом отверстии ступенчатого ударника, втулку цилиндрического корпуса с отверстием для пропуска штоковой части ступенчатого ударника и образующим во втулке кольцевой перешеек, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха в крышке со стороны кольцевого фланца, камеру-ресивер между стаканом и крышкой, камеру холостого хода со стороны хвостовика рабочего инструмента, удерживаемого пружиной относительно цилиндрического корпуса, причем канал-паз на боковой поверхности поршневой части стержня выполнен с изменяющимся геометрическим сечением, увеличивающимся от боковой поверхности поршневой части со стороны стержня до окончания его поршневой части его стороны сквозного осевого отверстия ступенчатого ударника, отличающееся тем, что между штоковой частью ступенчатого ударника и цилиндрическим корпусом со стороны кольцевого перешейка втулки образована кольцевая управляемая камера рабочего хода, а на боковой поверхности штоковой части ступенчатого ударника выполнен кольцевой канал-выточка перепуска воздуха в виде ...

Percussion device and rock drilling machine including such a percussion device

一种冲击装置，其在机壳(7)内具有可移动冲击活塞(2)，所述活塞(2)的运动可通过移动的阀体(5)控制，所述阀体(5)根据指示冲击活塞的轴向位置的信号被设置成将一室交替地连接到压力源和低压上，活塞(2)上的驱动面位于所述室中，因此，用于传送所述信号的控制通道机构(10、12；10′、12′)具有打开机构，所述打开机构通向用于容纳活塞(2)的气缸空间，以与活塞上的控制边缘(11、13)相配合，设置调整机构，使调整所述信号被传送的活塞的轴向位置成为可能。调整机构包括至少一个可轴向移动的控制机构(9、9′、9″)，所述控制机构(9、9′、9″)接触活塞，并包括具有打开机构的控制通道机构的一部分(10、12；10′、12′)，本发明还涉及一种凿岩机和方法。

Impact device with rotary control valve

FIELD: mechanics. SUBSTANCE: proposed impact device incorporates casing whereto tool can be attached along with load-bearing element arranged between the aforesaid casing and tool and held by the said casing. It also comprises working fluid chamber and said fluid feed and discharge appliances. The impact device comprises a rotary control valve furnished with control channels designed to intermittently direct working fluid from the said working fluid chamber into return channel. EFFECT: ease of control. 24 cl, 8 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 341 373 (13) C2 (51) ÌÏÊ B30B 1/32 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2005129340/02, 23.02.2004 (72) Àâòîð(û): ÊÅÑÊÈÍÈÂÀ Ìàðêêó (FI), ÌÝÊÈ Éîðìà (FI), ÝÑÊÎ Ìàóðè (FI), ÀÕÎËÀ Ýðêêè (FI) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 23.02.2004 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 21.02.2003 FI 20030261 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÀÍÄÂÈÊ ÒÀÌÐÎÊ ÎÉ (FI) (43) Äàòà ïóáëèêàöèè çà âêè: 10.03.2006 (45) Îïóáëèêîâàíî: 20.12.2008 Áþë. ¹ 35 2 3 4 1 3 7 3 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: WO 03/004822 À1, 01.07.2002. DE 2206014, 02.08.1973. SU 1009807 A, 07.04.1983. RU 2050221 C1, 20.12.1995. DE 2206014, 02.08.1973. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 21.09.2005 2 3 4 1 3 7 3 R U (87) Ïóáëèêàöè PCT: WO 2004/073933 (02.09.2004) C 2 C 2 (86) Çà âêà PCT: FI 2004/000082 (23.02.2004) Àäðåñ äë ïåðåïèñêè: 129090, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòðîåíèå 3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Ñ.À.Äîðîôååâó, ðåã.¹ 146 (54) ÓÄÀÐÍÎÅ ÓÑÒÐÎÉÑÒÂÎ Ñ ÂÐÀÙÀÞÙÈÌÑß ÊËÀÏÀÍÎÌ ÓÏÐÀÂËÅÍÈß (57) Ðåôåðàò: Óäàðíîå óñòðîéñòâî ñ âðàùàþùèìñ êëàïàíîì óïðàâëåíè îòíîñèòñ ê ìàøèíîñòðîåíèþ. Óäàðíîå óñòðîéñòâî ñîäåðæèò êîðïóñ, ê êîòîðîìó ìîæåò ïðèñîåäèí òüñ èíñòðóìåíò è ðàñïîëîæåííûé ìåæäó êîðïóñîì è èíñòðóìåíòîì íàïð ãàåìûé ýëåìåíò, óäåðæèâàåìûé êîðïóñîì óäàðíîãî óñòðîéñòâà, è ïîëîñòü äë ðàáî÷åé æèäêîñòè, è ...

Control Device of Piston Stroke of hydraulic Breaker

본 고안은 피타격물 파쇄작업시 타격수 및 타격력을 변화시켜 피타격물의 종류에 따라 유압 브레이커의 파쇄작업효율을 향상시킬 수 있도록 피스톤의 행정거리를 조절하는 유압 브레이커의 피스톤 행정거리조절장치에 관한 것으로서, 밸브 전환실이 실린더 하실과 연통되었을 때 밸브 스풀이 상승되고, 실린더 하실과 실린더 저압실 사이에 구비된 제1 실린더 전환실과 제2 실린더 전환실을 연통 또는 단속하는 유압 브레이커의 피스톤 행정거리조절장치에 있어서, 상기 제2 실린더 전환실과 상기 제1 실린더 전환실을 선택적으로 연통시키는 회전밸브(10)와; 상기 회전밸브(10)의 상측에서 결합되어 상기 회전밸브와 함께 회전되는 회전체(20)와; 상기 회전밸브(10)와 상기 회전체(20) 사이에 개재되어 상기 회전체(20)를 탄성 지지하는 스프링(40)과; 상기 회전밸브(10) 및 상기 회전체(20)의 상부가 결합되고 상기 회전체(20)의 회전을 차단하는 커버(30);를 포함하는 것을 특징으로 한다. 따라서, 유압 브레이커를 이용한 파쇄작업시 작업자의 의도와 무관하게 임의적으로 피스톤의 행정거리가 변화되어 발생할 수 있는 작업효율의 저하를 방지할 수 있다. The present invention relates to a piston stroke distance adjusting device of a hydraulic breaker that adjusts the stroke stroke of the piston to change the number of blows and the blow force during the crushing object to improve the crushing efficiency of the hydraulic breaker according to the type of the strike object. In the piston stroke distance adjusting device of a hydraulic breaker, the valve spool is raised when the valve switching chamber communicates with the cylinder chamber, and communicates or intercepts the first cylinder switching chamber and the second cylinder switching chamber provided between the cylinder chamber and the cylinder low pressure chamber. A rotary valve (10) for selectively communicating with the second cylinder switching chamber and the first cylinder switching chamber; A rotating body 20 coupled to the upper side of the rotary valve 10 to rotate together with the rotary valve; A spring 40 interposed between the rotary valve 10 and the rotary body 20 to elastically support the rotary body 20; And a cover 30 coupled to the rotary valve 10 and the upper part of the rotating body 20 to block rotation of the rotating body 20. Therefore, it is possible to prevent a decrease in work efficiency that may occur due to a change in the stroke length of the piston arbitrarily regardless of the intention of the operator during the crushing operation using the hydraulic ...

Compression-vacuum impact machine (versions)

FIELD: machine building. SUBSTANCE: invention relates to compression-vacuum impact machine. Impact machine contains housing, striker, together with housing forming forward and reverse stroke chambers, and source of working medium, electrically connected to control unit first input. Electrically driven valve is connected with reverse stroke chamber, made with possibility to supply, termination of working medium supply into reverse stroke chamber from working medium source and used working medium discharge and electrically connected to control unit second input. Forward stroke chamber is equipped with electric valve, made with possibility of supply, termination of working medium supply into forward stroke chamber from working medium source and used working medium discharge and electrically connected to control unit third input. EFFECT: result is increased frequency and energy of impacts, simplified design. 3 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 609 765 C1 (51) МПК B25D 9/14 (2006.01) B25D 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015145912, 26.10.2015 (24) Дата начала отсчета срока действия патента: 26.10.2015 Дата регистрации: (72) Автор(ы): Белобородов Василий Николаевич (RU), Ткачук Андрей Константинович (RU), Заболоцкая Надежда Назимовна (RU) Приоритет(ы): (22) Дата подачи заявки: 26.10.2015 (45) Опубликовано: 02.02.2017 Бюл. № 4 (56) Список документов, цитированных в отчете о поиске: RU 2508979 C2, 10.03.2014. RU 2390404 C2, 27.05.2010. US 4495791 A1, 29.01.1985. 2 6 0 9 7 6 5 R U (57) Формула изобретения 1. Компрессионно-вакуумная ударная машина, содержащая корпус, ударник, образующий с корпусом камеры прямого и обратного хода, блок управления, источник рабочей среды, электрически соединенный с первым входом блока управления, электроклапан, связанный с камерой обратного хода и выполненный с возможностью подачи, прекращения подачи рабочей среды в ...

Impact device and method for generating stress pulse therein

본 발명은 유압 작동식 충격 장치에서 응력 펄스를 발생시키기 위한 방법과 함께 공구 (3) 가 길이 방향으로 운동가능하도록 장착되는 프레임 (2) 및 충격 장치 (1) 에 대한 압력 유체 공급을 제어하기 위한 제어 수단 (7) 을 포함하는 유압 작동식 충격 장치에 관한 것이다. 상기 충격 장치 (1) 는 작동실 (8) 과 이 작동실 내에서 운동하는 전달 피스톤 (9) 을 포함한다. 압력 유체의 에너지를 저장하기 위한 에너지 저장 수단과 상기 제어 수단은 주기적으로 그리고 교번적으로 연결되어 압력 유체가 상기 작동실 (8) 에 유입되게 되고, 이어서 이 작동실 (8) 로부터 압력 유체를 방출한다. 상기 방법에서는, 압력 유체가 작동실 (8) 로 공급되어, 상기 전달 피스톤 (9) 을 공구 (3) 의 방향으로 미는 힘을 발생시키고 따라서 공구 (3) 에 응력 펄스가 발생된다. The invention relates to a frame (2) on which a tool (3) is mounted so as to be movable in the longitudinal direction and a pressure fluid supply to the impact device (1) together with a method for generating a stress pulse in a hydraulically actuated impact device. A hydraulically actuated impact device comprising control means 7 is provided. The impact device 1 comprises an operating chamber 8 and a transfer piston 9 moving within the operating chamber. The energy storage means for storing the energy of the pressure fluid and the control means are connected periodically and alternately so that the pressure fluid enters the operating chamber 8, and then discharges the pressure fluid from the operating chamber 8. do. In this method, a pressure fluid is supplied to the operating chamber 8 to generate a force that pushes the transfer piston 9 in the direction of the tool 3 and thus to generate a stress pulse on the tool 3.

Impact tool operated by pressure fluid

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Control valve, impactor and method of impactor operation cycle control

FIELD: technological processes. SUBSTANCE: control valve for impactor operation cycle control includes a case with an area, at least two high-pressure medium channels connected to the case area, control element, at least first high-pressure working area and at least second high-pressure working area. Control element is mounted in the case area and can move forth and back in the first and second directions, and is intended for closing and opening high-pressure medium channels. Control element can move from middle position to the first extreme position in the first direction. Second high-pressure working area is formed on the condition of closed high-pressure area forming, and therefore, by control element movement from middle position to the second extreme position in the second direction. First high-pressure working area is formed on the condition of closed high-pressure area forming. EFFECT: simplified control valve construction and impactor operation cycle control. 18 cl, 6 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 334 610 (13) C2 (51) ÌÏÊ B25D 9/16 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2005129334/02, 23.02.2004 (72) Àâòîð(û): ÊÎÑÊÈÌßÊÈ Àíòòè (FI), ÊÅÑÊÈÍÈÂÀ Ìàðêêó (FI), ÌßÊÈ Éîðìà (FI), ÀÕÎËÀ Ýðêêè (FI) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 23.02.2004 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÀÍÄÂÈÊ ÒÀÌÐÎÊ ÎÉ (FI) (43) Äàòà ïóáëèêàöèè çà âêè: 10.02.2006 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 21.02.2003 FI 20030263 (45) Îïóáëèêîâàíî: 27.09.2008 Áþë. ¹ 27 2 3 3 4 6 1 0 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: RU 2167990 C2, 27.05.2001. SU 1293328 A1, 28.02.1987. SU 212915 A1, 01.01.1968. SU 519535 A1, 30.06.1976. US 3425498 A, 04.02.1969. EP 0578623 A1, 12.01.1994. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 21.09.2005 2 3 3 4 6 1 0 R U (87) Ïóáëèêàöè PCT: WO 2004/073930 A1 (02.09.2004) C 2 C 2 (86) Çà âêà PCT: FI 2004/000079 (23.02.2004) Àäðåñ äë ...

Device for pneumatic impact mechanism with throttling air distribution

FIELD: construction.SUBSTANCE: invention relates to the field of construction equipment for destruction of strong materials of artificial and natural origin, in particular, in pneumatic machines of impact action. Device air-inlet rod has blind cavity-chamber with inlet channel for inlet of network air and with closed end on the side of idle stroke chamber. Outputs of throttle inlet channels on side wall of rod are made in the form of tiers of radial throttle intake channels and radial throttle trigger channels separately for working stroke chamber and idle stroke chamber and so, that the throttling inlet channels are made on the striker movement section, which is less than the distance between the cutting edges on the side of the striker ends, and the radial throttle starting channels for the working stroke chamber are made at the level of the cutting edge of the striker end on the side of the working stroke chamber in the striker position, supported on the annular flange, and radial starting throttles for idle stroke chamber are made at level of cutoff edge of striker end from idle stroke chamber in hammer position resting on working tool shank.EFFECT: increasing internal air energy and efficiency of application of variable cross-section areas of throttle channels at outlet into working chambers, higher efficiency of air usage at its expansion and increased energy of single impact transmitted to working tool.1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 728 067 C2 (51) МПК E21C 37/24 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21C 37/24 (2020.02); B25D 9/14 (2020.02); B25D 9/26 (2020.02) (21)(22) Заявка: 2018123908, 29.06.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 28.07.2020 (43) Дата публикации заявки: 30.12.2019 Бюл. № 1 (45) Опубликовано: 28.07.2020 Бюл. № 22 2 7 2 8 0 6 7 R U (56) Список документов, цитированных в отчете о поиске: SU 1239303 ...

Reverse hydraulic impact device

FIELD: power engineering. SUBSTANCE: invention relates to a reverse hydraulic impact device. The device contains a distributor with a control chamber and a control channel, an energy accumulator, a spring-connected case and a striker with a groove, a hydraulic chamber, striker movement limiters, the first pair of control channels, the second pair of control channels, an overflow valve, an additional distributor and a throttle for supplying liquid from the control channel of the additional distributor to a drain line. The first pair of control channels connects, depending on the position of the striker, the control channel leading to the distributor control chamber to drain or pressure lines. The overflow valve is made with the possibility of providing liquid supply in an open state through the control channel of the additional distributor to the control chamber of the additional distributor. EFFECT: same efficiency of the device in forward and reverse directions is ensured. 1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 770 914 C1 (51) МПК B25D 9/14 (2006.01) E21B 1/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B25D 9/14 (2022.02); E21B 1/26 (2022.02) (21)(22) Заявка: 2021129096, 06.10.2021 (24) Дата начала отсчета срока действия патента: Дата регистрации: 25.04.2022 (45) Опубликовано: 25.04.2022 Бюл. № 12 2 7 7 0 9 1 4 R U (54) Реверсивное гидроударное устройство (57) Реферат: Изобретение относится к реверсивному гидроударному устройству. Устройство содержит распределитель с камерой управления и каналом управления, аккумулятор энергии, связанные пружиной корпус и боек с проточкой, гидравлическую камеру, ограничители движения бойка, первую пару каналов управления, вторую пару каналов управления, переливной клапан, дополнительный распределитель и дроссель для подачи жидкости от канала управления дополнительного распределителя в сливную линию. Первая пара каналов управления Стр.: 1 (56) Список ...

Hammering device and method of surge generation

FIELD: mining. ^ SUBSTANCE: invention refers to hammering devices and to methods of surge generation in hammering devices. The hammering device consists of a frame, wherein designed to length travel tool is assembled, of means for control over working fluid supply in the hammering device, of means for generating a surge in the tool by means of working fluid pressure, of a working chamber completely filled with working fluid and of means of charging working fluid with energy, when working fluid is supplied to the hammering device for surge generation. A transmission piston is installed in the working chamber; this piston is designed to move the tool lengthwise relative to the frame. The transmission piston contacts the tool at surge generation. The means of control provide abrupt growth of pressure in the working chamber for generating a surge in the tool and termination of surge generating in the tool during working fluid kick form the working chamber to return the transmission piston into its initial position. ^ EFFECT: decreased dynamic loads in hammering device. ^ 29 cl, 10 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 353 507 (13) C2 (51) МПК B25D 9/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2006103362/02, 06.07.2004 (24) Дата начала отсчета срока действия патента: 06.07.2004 (43) Дата публикации заявки: 27.07.2006 (56) Список документов, цитированных в отчете о поиске: WO 03004822 A1, 16.01.2003. SU 694636 A1, 30.10.1979. SU 1028840 A1, 15.07.1983. RU 2079735 C1, 20.05.1997. SU 1798165 A1, 28.02.1993. 2 3 5 3 5 0 7 R U (86) Заявка PCT: FI 2004/000429 (06.07.2004) C 2 C 2 (85) Дата перевода заявки PCT на национальную фазу: 07.02.2006 (87) Публикация PCT: WO 2005/002802 (13.01.2005) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. С.А.Дорофееву (54) УДАРНОЕ УСТРОЙСТВО И СПОСОБ ГЕНЕРИРОВАНИЯ ...