Method for testing radiation of transmitting power of digital television station in open ground environment

The invention provides a method for testing radiation of transmitting power of a digital television station in an open ground environment and belongs to the field of performance index testing of a radio transmission system. The method comprises the steps of setting the center frequency f of a power measurement device, adjusting the polarization direction and pitching direction of a receiving antenna, finding a signal maximum value and then fixing the receiving antenna, measuring and recording the height h1 of a transmitting antenna, the height h2 of the receiving antenna and the distance L between the transmitting antenna and the receiving antenna, measuring the channel power Pr received by the receiving antenna, and calculating the equivalent isotropic radiated power (EIRP) of the tested station according to the following formula: EIRP=Pr-Gr+Lr+Lprop+Pb, wherein the Gr represents gain of the receiving antenna, the Lr represents loss of the receiving antenna and a connector, the Lprop represents ...

Plate-fin/tube-fin type radiator of vehicle

The invention discloses a plate-fin/tube-fin type radiator of a vehicle. A core is divided into a high temperature region and a low temperature region according to a thermoisopleth form of a radiator core part; and when the heat exchange capacity of the conventional radiator cannot meet the actual requirement, heat exchange fins with different densities or of different types are arranged in different regions by a local heat exchange strengthening method. If cold side fins of the high temperature region are thickened or hot side fins of the low temperature region are thickened, the heat exchange performance can be greatly improved at the expense of lower resistance.

Optical fiber detection equipment based on network security

The invention discloses optical fiber detection equipment based on network security, and relates to the technical field of optical fiber detection equipment, the optical fiber detection equipment comprises a main body, the front end of the main body is provided with an equipment frame, the middle of the inner cavity of the main body is provided with a dismounting device, the upper end of the dismounting device is provided with a detection processor, and the right end of the equipment frame is provided with a circulating air plate. A heat dissipation device is installed at the left end of the circulating air plate, a displayer is arranged at the left end of the equipment frame, an alarm device is installed at the upper end of the displayer, a bending device is installed at the right end of the alarm device, and an optical fiber is arranged at the upper end of the bending device. The sleeve plate is fixed to the lower end of the detection processor, and the bolts at the two ends are rotated ...

Tandem elastically-driven quadruped robot leg structure and torque control method

The invention belongs to the technical field of robots, and discloses a series connection elastic driving quadruped robot leg structure and a torque control method, and the series connection elastic driving quadruped robot leg structure comprises a thigh joint driving unit, a shank joint driving unit and a hip joint driving unit; the hip joint driving unit and the shank joint driving unit are identical in structure and comprise hollow motors, speed reducers and joint output shafts, the thigh joint driving unit comprises hollow motors, speed reducers, thigh joint output shafts and elastomers, the speed reducers are arranged in the hollow motors, output of the speed reducers is connected with the elastomers, and output of the elastomers is connected with the thigh joint output shafts. The hip joint driving unit and the shank joint driving unit adopt speed reducers with low reduction ratios, so that the cost is reduced. The elastic body is additionally arranged in the thigh joint driving unit ...

Under-actuated three-joint finger with gear and rack transmission

The invention discloses an under-actuated three-joint finger with gear and rack transmission. The under-actuated three-joint finger comprises a near-end finger joint, a middle finger joint, a far-end finger joint and a main drive mechanism. The near-end finger joint comprises a near-end finger joint drive mechanism, a near-end finger joint base and a near-end finger joint cover plate. The middle finger joint comprises a middle finger joint drive mechanism, a middle finger joint base and a middle finger joint cover plate. The far-end finger joint comprises a far-end finger joint base and a far-end finger joint cover plate. A base of the main drive mechanism, the near-end finger joint base, the middle finger joint base and the far-end finger joint base are sequentially hinged to form the linked joint finger. The near-end finger joint drive mechanism and the middle finger joint drive mechanism are identical in structure. A motor drive mechanism, the near-end finger joint drive mechanism and ...

Simulation test bed used for engine exhaust aftertreatment device

The invention discloses a simulation test bed used for an engine exhaust aftertreatment device, comprising a flow control system, a temperature control system, a main gas composition control system, a pressure control system and a control host, wherein five subsystems and pipelines mutually form an aftertreatment device test bed for simulating engine exhaust. Five subsystems are used for controlling and regulating the flow, the temperature and the pressure of gas entering the aftertreatment device as well as the main gas composition, and the exhaust situation when an engine is under the steady-state working condition is simulated so as to realize the relevant performance and the reliability test of the aftertreatment device. The gas flow, temperature and pressure as well as the main gas compositions are controlled by the simulation test bed to simulate the real engine exhaust situation, and gas having the same state with engine exhaust can be provided for the aftertreatment device to carry ...

Building curtain wall and composite board for manufacturing same

The invention provides a composite board having good heat-insulating effect and simplicity of installation and a building curtain wall formed by fixing two or more composite boards on a building. The composite board comprises a metal panel, a metal bottom plate and a hard structure foaming layer arranged between the panel and the bottom plate, wherein two sides of the panel are downwards folded to form panel folded edges which are not contacted with the bottom plate. On the building curtain wall, a heat-insulating plate is arranged between a side connecting plate of a left corner plate and a panel folded edge of a composite board and is fixedly connected with the panel folded edge; another heat-insulating plate is arranged between a side connecting plate of a right corner plate and another panel folded edge of the composite board and is fixedly connected with the panel folded edge; and a bottom connecting plate of the left corner plate and a bottom connecting plate of the right corner plate ...

Vehicle-arm coordination dynamics optimal excitation and high-precision identification method for composite robot

The invention belongs to the field of robot model identification, and discloses an optimal excitation and high-precision identification method for vehicle-arm coordination dynamics of a composite robot, and the method comprises the steps: designing a non-singular linear regression equation through a dynamics recursion model of vehicle-arm coordination motion of the composite robot; then designing an optimal excitation track of vehicle arm coordinated motion based on finite term Fourier series and a dynamic regression matrix weighted condition number, and designing a high-precision adaptive weighted iterative solution algorithm of dynamic parameters based on abnormal data suppression and measurement noise priori knowledge; and finally, high-precision robust identification of the vehicle-arm coordination dynamics model of the composite robot is realized. According to the method, vehicle-arm coordination full-state dynamics linear modeling and optimal synchronous excitation can be achieved ...

Plunger

The invention discloses a plunger which comprises a plunger main body and a plunger push rod connector arranged at one end of the plunger main body, wherein at least two flanges are arranged on a side wall of the plunger main body; threads are arranged on the surface of the plunger main body between the flanges. The plunger has the beneficial effects that the service life of the plunger is greatly prolonged, the molten metal between the flanges is solidified and then is firmly fixed on the plunger main body, the self-abrasion of the plunger and the abrasion of the plunger to a charging barrel are reduced, and the solidified molten metal and the plunger are combined into a compound plunger.

Global parameter optimization method based on parallel four-connecting-rod bouncing mechanism

The invention relates to the technical field of parallel four-bar linkage bounce mechanism parameter optimization, in particular to a global parameter optimization method based on a parallel four-bar linkage bounce mechanism, which comprises the following steps: step 1, according to the characteristics of the parallel four-bar linkage bounce mechanism, establishing and calculating the motion relational expression of each part; 2, calculating the energy loss of the parallel four-bar linkage bouncing mechanism in the jumping process by analyzing the motion characteristics of the parallel four-bar linkage bouncing mechanism; step 3, taking the bounce height as an optimization object, constructing a function relationship among all optimization parameters, and establishing an optimization objective function; 4, setting constraint conditions of optimization variables, and performing optimization calculation by using the optimization objective function to obtain theoretical optimal parameters ...

Composite sheet spinning machine and spinning method

The invention discloses a composite sheet spinning machine and spinning method. The composite sheet spinning machine comprises a main drive motor, a motor box, a spindle box, a tail top assembly, a main feed guide rail, a tail top drive assembly, a tail top saddle, a tail top saddle sliding board, a tail top guide rail, a mandrel, supporting legs, a main motor base, a base, a lathe bed, a forming spinning roller axial drive assembly, a forming spinning roller saddle, a forming spinning roller radial drive assembly, a forming spinning roller frame, a forming spinning roller, a forming spinning roller saddle sliding board and a spinning roller sliding board guide rail. The composite sheet spinning machine integrates ordinary spinning and mandrel-free spinning, use and combined machining of two different machining modes are achieved on one machine, the machining of two different modes can be finished only by controlling the feed direction of a motor through easy operation, the structure is ...

Full-text retrieval method and retrieval system thereof

The invention discloses a full-text retrieval method and a retrieval system thereof, and relates to the technical field of full-text retrieval, and the method comprises the following steps: S1, article preprocessing: recognizing articles, converting characters of the articles in various formats into a text file format, and establishing a character index for each character and word of the articles, pointing out the position and frequency of the character or word in the article; according to the full-text retrieval method and the retrieval system thereof, formulas of articles are recognized and then converted into text file formats to be stored, a first-level formula index and a second-level formula index are established for formula characters and formulas respectively, the formulas containing the corresponding formula characters are retrieved respectively, and then the articles where the formulas are located are retrieved according to the retrieved formulas, so that the full-text retrieval ...

Constrained speed reducer with small teeth difference

The invention discloses a constrained speed reducer with small teeth difference, which comprises a shell, a power input shaft and a power output shaft, wherein the power input shaft is provided with a transmission inner tooth disc of inner engaging teeth through an eccentric sleeve, the power output shaft is fixedly matched and provided with an outer gear in the circumferential direction, and theouter gear is engaged with the inner engaging teeth of the transmission inner tooth disc in a small teeth difference mode; and eccentric shaft sections of constraint shafts in running fit with the shell pass through the transmission inner tooth disc and are in running fit with the transmission inner tooth disc, at least two constraint shafts are uniformly distributed along the circumferential direction, and the eccentric distance of the eccentric shaft sections is equal to that of the eccentric sleeve. The constrained speed reducer eliminates the relative spinning motion of a power input mechanism ...

Integral vehicular hot pipe intercooler

The invention discloses an integrated vehicle heat pipe intercooler, which comprises an air inlet chamber, an air inlet, an intercooler core, an air outlet port and an air outlet chamber. The heat pipe intercooler is characterized in that: the wall body of the inlet chamber is provided with a cavity, a section of cooling pipe is connected through two connecting pipes with the cavity to form a return passage, the cavity is provided with radiating medium. The invention combines the heat pipe with the intercooler organically, thereby effectively reducing the temperature of the inlet chamber of the cooler, and making the aluminum cooler continue the advantages of light weight and low cost in the multi-stage booster technology.

Vacuum leak detection device for eye drop bottles after liquid drug filling and detection method of device

The invention relates to a vacuum leak detection device for eye drop bottles after liquid drug filling. The vacuum leak detection device comprises a vacuum device and an eye drop bottle placing device, wherein the vacuum device comprises a barrel, a supporting seat, a hinge device, a hinge device support, a movable compressing device, a fixed plate, a barrel cover, inner guide rails and a trolley, wherein the supporting seat is arranged at the bottom of the barrel; the barrel cover is arranged on one side of the barrel; a rearview mirror and an exhaust port are arranged at the rear end of the barrel; the hinge device support is arranged on one side of the barrel; one end of the hinge device is arranged in the hinge device support, and the other end of the hinge device is connected with the outer side of the barrel cover; the fixed plate is arranged on the outer side of the end part of the barrel cover; the movable compressing device is arranged at the end part of an opening of the barrel ...

Unmanned aerial vehicle ball hitting device and trajectory planning method

The invention discloses an unmanned aerial vehicle batting device and a trajectory planning method, the device is provided with an airborne computer host, and an unmanned aerial vehicle control instruction is calculated by the batting trajectory planning method on the airborne computer host; the trajectory planning method comprises two-stage initial polynomial trajectory generation and polynomial-based trajectory optimization. The method solves the problem that the existing unmanned aerial vehicle cannot effectively cope with the ball hitting trajectory planning of the extreme ball hitting condition in the ball hitting confrontation game, and has the characteristics that the ball hitting state is flexible, the ball hitting trajectory meets the dynamic constraint and the like, so that the unmanned aerial vehicle can deal with the extreme ball hitting condition in a larger range on the premise of specifying the ball hitting target point. According to the method, a continuous differentiable ...

4,5-disubstitutedphenyl-3H-1,2-disulphur heterocycle pentene-3-thioketone, -ketone, -ketoxime derivants and uses thereof

The invention belongs to the technical field of medicine and relates to 4, 5-disubstituted phenyl-3H-1, 2-dithiole-3-thioketone, -ketone, and -ketoxime derivatives. The structure of the derivatives is shown as the right, and X is S, O, and N-OR, wherein the R is hydrogen and C1-C6 alkyl. The invention also provides pharmaceutically accepted nontoxic salts formed by the derivatives shown in the structural formula and hydrates thereof, and the pharmaceutically accepted nontoxic salts comprise salts formed by the derivatives and acid. The results of pharmacological activity experiments show that the derivatives have better tumor-inhibiting activity, and can be used for the application of a tumor cell proliferation inhibitor to preparation of anti-tumor drugs.

Robot global finite time motion control method based on adaptive composite observer

The invention belongs to the technical field of robot motion control, and discloses a robot global finite time motion control method based on a self-adaptive composite observer, which comprises the following steps of: 1, designing the self-adaptive composite observer based on finite time sliding mode popularity, and comprehensively compensating kinematics and dynamics uncertainty of a robot; 2, designing a nonsingular terminal sliding mode motion controller based on the adaptive neural network and preset performance error affine, and directly stabilizing the motion error of the task space; and step 3, finally, realizing the global finite time stability of the whole observation-control system through a Lyapunov design method, so that the observer error and the motion control error are quickly converged to zero in finite time, and the preset transient and steady state response characteristics of the system are met. According to the method, the motion error of the tail end of the robot can ...

Intelligent multi-pet feeder based on image recognition and intelligent feeding system

The invention discloses an intelligent multi-pet feeder based on image recognition and an intelligent feeding system, which can realize an automatic feeding function, avoid waste caused by excessive feeding of grains, and can feed different pets separately based on a separate warehouse design. By observing and analyzing behaviors and states of the pets, whether the pets are full or not is judged based on ages and sizes of the pets, and scientific feeding is performed; the color and behavior of the fur of the pet are judged, correspondingly lacked nutrient elements of the pet are judged based on the variety of the pet, a user is reminded to supplement corresponding nutrients in time through the client side, and the purpose of intelligent feeding is achieved; the feeder is the position where the pets stay for the highest number of times and frequency, and the intelligent multi-pet feeder can effectively take more pictures and upload the pictures to the server. The intelligent pet feeder and ...

Rotary incinerator for hazardous waste treatment and rotary incineration method

The invention relates to the technical field of waste incinerators, and provides a rotary incinerator for hazardous waste treatment and a rotary incineration method.The rotary incinerator comprises an incinerator body and a communicating piece, the incinerator body is provided with a feeding port, an air outlet, a first incineration cavity, a second incineration cavity and a communicating port, and the first incineration cavity and the second incineration cavity are distributed in the vertical direction; the air outlet communicates with the first incineration cavity, the communicating opening communicates with the first incineration cavity and the second incineration cavity, the feeding opening communicates with the second incineration cavity, the communicating piece is rotationally arranged in the furnace body, the communicating piece is located in the communicating opening, the communicating piece is provided with a plurality of ventilation openings, and the ventilation openings communicate ...

Rice blast bacterium nontoxic gene Avr-Pib and application

A rice blast bacterium innocuity gene Avr-Pib is obtained by separation and appraising in T-DNA insertion mutation. The out-knocking mutant of the gene can cause susceptibility of rice breed variety containing Pib disease-resistant gene. The out-knocking mutant and field susceptibility individual plant can recover non-toxicity by function complementation experiment and the breed variety is disease-resistant. The gene can be used as molecule target of newly pesticides and paddy rice disease-resistant genetic engineering.

Four-freedom degree clamping device of laser vibration measurer

The invention discloses a four-freedom-degree clamping device for a laser vibration measurer which includes a pedestal, and a mobile pair I, a mobile pair II and a mobile pair III which are arranged on the pedestal and form a three dimensional coordinate system, wherein relative fixed part of the mobile pair I is the pedestal, relative fixed part of the mobile pair II is a mobile part of the mobile pair I, relative fixed part of the mobile pair III is a mobile part of the mobile pair II, a laser head of the laser vibration measurer is connected with the mobile part of the mobile pair III by a rotary pair, and axial line of the rotary pair intersects movement direction of the mobile pair III. The invention can realize four-freedom-degree adjustment for the laser head of the laser vibration measurer, effectively fix the laser head of the vibration measurer in vibration measurement process, conveniently adjust relative position of the laser head and object to be measured in a certain range ...

Split type vehicular hot pipe intercooler

The invention discloses a split vehicle heat pipe intercooler, which comprises an inlet chamber, an inlet port, an intercooler core, an outlet port and an outlet cooler. The invention is characterized in that: the intercooler also comprises a heat pipe which is made up by an endothermic section, a cooling section and two connecting pipes, the endothermic section of the heat pipe is positioned in the inlet chamber. By the way of adding a heat pipe on the cooler, the invention makes the hot air of the inlet chamber heat eliminated partly before the hot air enters into the core to effectively reduce the temperature of the inlet chamber, thereby effectively solving the technical problem that the aluminum causes fatigue limit used in high-temperature environment, and making the aluminum cooler continue the advantages of light weight and low cost in the multi-stage booster technology.

Core-mold-free spinning machine with auxiliary spinning roller and spinning method

The invention discloses a core-mold-free spinning machine with an auxiliary spinning roller and a spinning method. The core-mold-free spinning machine comprises a main shaft box, a motor case, feed saddle guide rails, a lathe bed, auxiliary saddle guide rails, a base, a blank fixing frame, base supporting legs, a main shaft box motor base, a main shaft box motor, feed drivers, a feed spinning roller frame, a feed saddle assembly, a feed sliding plate, a feed spinning roller, the auxiliary spinning roller, an auxiliary supporting arm, an auxiliary flange, an auxiliary base, a lead screw assembly, an auxiliary motor base, auxiliary motors, an auxiliary saddle sliding plate, auxiliary saddle guide rails, an auxiliary motor flange, an auxiliary saddle and a lead screw bearing base. The core-mold-free spinning machine is suitable for core-mold-free spinning for production of complex-surface parts with varied curved generatrix curvature verifying and free forms. The core-mold-free spinning machine ...

Heat pipe oil cooler for vehicle

The invention discloses a heat pipe oil cooler for vehicle, mainly comprising an oil inlet, an oil cavity, an oil outlet, an overall copper aluminum composite fin heat pipe; the overall copper aluminum composite fin heat pipe is filled with working medium water evenly distributed in the oil cavity. The invention is distributed at the two sides at the front end of the engine area to fully use the vehicle wind cooling; the invention does not consume the additional energy and has simple structure and is adapted on the power machines such as vehicle, engine set, air compressor, etc,.

Tail gas waste heat recovery device

The invention relates to a tail gas waste heat recovery device which is provided with a first communication cavity, a second communication cavity, a third communication cavity, a first heat exchange cavity and a second heat exchange cavity, and the first communication cavity, the first heat exchange cavity, the second communication cavity, the second heat exchange cavity and the third communication cavity are sequentially communicated in the vertical direction from bottom to top. Liquid working media are arranged in the first communicating cavities and the first heat exchange cavities, the multiple first heat exchange fins are arranged between the adjacent first heat exchange cavities, and the first heat exchange fins can transfer heat in tail gas to the liquid working media in the first heat exchange cavities; when the temperature of the tail gas is larger than the preset temperature value, the liquid working medium can absorb heat and evaporate and enter the multiple second heat exchange ...

Window cleaning robot and method capable of achieving bilateral laser decontamination

The invention belongs to the technical field of window cleaning robots, and discloses a bilateral laser decontamination window cleaning robot which comprises an in-window working machine and an out-window working machine, the in-window working machine and the out-window working machine are attracted to the inner surface and the outer surface of glass and clean the inner surface and the outer surface of the glass at the same time, and the in-window working machine comprises an in-window machine body laser cleaning unit and a moving unit. The out-window working machine comprises an out-window machine body laser cleaning unit, an out-window machine body adsorption unit, an out-window machine body detection unit and an out-window machine body electric control unit. By combining the suction of the centrifugal fan and the magnet, the energy consumption and the potential safety hazard are reduced. The dirt is judged to be on the inner side or the outer side by comparing the images of the inner ...

Intelligent exercise and fitness bridle, control method and system

The invention belongs to the technical field of exercise devices, and discloses an intelligent exercise body-building bridle and a control method and system.The intelligent exercise body-building bridle comprises a body-building bridle body, the two ends of the body-building bridle body are provided with a hook-and-loop fastener son buckle and a hook-and-loop fastener mother buckle respectively, and the hook-and-loop fastener son buckle and the hook-and-loop fastener mother buckle adhere to each other to curl the body-building bridle body into a ring shape and bind the body-building bridle body to an exercise force exerting part of a human body; an intelligent chip is arranged in the middle of the body-building belt body and comprises a pressure sensor, a main control chip and a vibration module, the pressure sensor and the vibration module are both electrically connected with the main control chip, the pressure sensor is used for detecting the contraction pressure of muscles when a human ...

Intelligent cooling system for construction machinery

The invention relates to a cooling system, aiming at providing an intelligent cooling system for construction machinery. The system comprises a fan, a heat exchanger and a mounting bracket; wherein, the mounting bracket is provided with a top surface and a plurality of sides in ring joint; the bottom of the sides is fixed on a mounting platform; a fan is arranged on the top surface of the mounting bracket; at least an electronic control shutter is arranged on the sides of the mounting bracket; the heat exchanger is arranged on the outer side of the electronic control shutter; an outlet pipeline of a medium in the heat exchanger is provided with a temperature sensor which is connected to an ECU (electronic control unit) via a signal wire; the ECU is respectively connected with the fan and a motor of the electronic control shutter via a lead. The intelligent cooling system has the beneficial effects that the cooling air cools each heat exchanger from four sides, thus ensuring lower temperature ...

Building curtain wall and composite board for fabricating building curtain wall

The invention provides a composite board which has better thermal insulation effect and is easy to install and a building curtain wall formed by more than two composite boards which are fixed on a building. The composite board comprises a metal panel, a metal bottom board and a hard structure foam layer arranged between the panel and the bottom board; and two sides of the panel are folded downwards for forming panel folded edges which are not in contact with the bottom board, or the two sides of the bottom board are folded upwards to form bottom board folded edges which are not in contact with the panel. A thermal insulation board is arranged between a side connecting board of a left angle board of the building curtain wall and the panel folded edges or the bottom board folded edges of one composite board and fixedly connected with the panel folded edges or the bottom board folded edges; the other thermal insulation board is arranged between the side connecting board of a right angle board ...

Thermoplastic cellular sheet material and preparation method thereof

The invention discloses a thermoplastic cellular sheet material and a preparation method thereof. The preparation method comprises the following steps of 1, manufacturing double-layer clad pipes, 2, carrying out ordered arrangement bundling on the double-layer clad pipes, carrying out heating so that the outer layers of the double-layer clad pipes are melt and the inner layers are non-fusible, and carrying out cooling so that the adjacent and clingy outer layers of the double-layer clad pipes are bonded to form a cellular body, 3, cutting the cellular body along cross sections of the double-layer clad pipes to obtain tabular cellular bases, wherein in hot-wire cutting, the bottom of the cellular body is built on stilts and the upper part of the cellular body is pumped down by an exhaust cowl so that air vertically flowing through the pipe holes of the cellular body accelerates heat dissipation cooling, upper and lower plate bonding after hot-wire cutting is avoided and production efficiency ...

Three-dimensional shoe last rebuilding method based on scanning and inputting

The invention discloses a three-dimensional shoe last reconstruction process based on the scanning input, which comprises scanning a last by a three-dimensional scanner, generating a point cloud data model through the computer data processing, conducting the pre-processing for the point cloud data model to obtain an initial shoe last model, carrying out the automatic character identification, generating all sub face sheets of the shoe last through the surface slicing technology, stitching all the sub face sheets to form the surface of the whole shoe last, thereby gaining the shoe last model after the reconstruction. The invention transforms the shoe last data into a grid model after the point could processing, automatically obtains each character point and each character line of the shoe last through the automatic character identification technology, and eliminates the problems brought by the losses or damages of original character information files. The position with larger surface curvature ...

Combustion apparatus for EGR valve test

The invention discloses a combusting device used for an EGR valve test, which comprises a blower fan, an air cleaner, a first throttle valve, a second throttle valve, a combustor, an oil box, an oil pump, a fuel oil filter, an igniter, a first air inlet, a fuel oil spraying nozzle, a sparking plug and a second air inlet, wherein, the blower fan is respectively connected with the first throttle valve and the second throttle valve through the air cleaner, the first throttle valve is connected with the first air inlet of the combustor, the second throttle valve is mutually connected with the second air inlet of the combustor, the oil box is connected with the oil pump, the fuel oil filter and the fuel oil spraying nozzle in sequence, and the igniter is connected with the sparking plug. The combusting device can heat the inlet air by adopting a combusting and heat emitting method, to cause the oil and the air to be sufficiently mixed; both the air flow quantity and the air fuel ratio can be ...

Planetary gearbox with supper large speed ratio and small teeth difference

The invention discloses a planetary gearbox with supper large speed ratio and small teeth difference, comprising an input gear train, an output gear train, an inner gear I and an inner gear II. The input gear train and the output gear train are joined together by the inner gear I and the inner gear II to transmit motive power. In the invention, by using the input gear train and the output gear train, the rotate speed is output by a structure that two small teeth differences fit with one planetary gear train, the structure is simple and compact and has super large reduction ratio, and simultaneously, motive power input is realized by two power dividing gear trains, the input and output modes of the existing gearbox with small teeth difference are changed, and motive power can be output stably while super large reduction ratio is obtained. The planetary gearbox can operate stably, has compact structure and small volume, and is suitable for some situations in which extreme requirements on ...

Petroleum field informatization communicator

The invention provides a petroleum field informatization communicator, which comprises an electric wave communication area, a background of the electric wave communication area, an oil field structure intervention area database, portable wireless communication equipment and a signal forwarding reinforcing frame structure, and is characterized in that the portable wireless communication equipment comprises a wireless communication equipment body; the left upper side of the wireless communication equipment body is in threaded connection with a signal antenna; an adjustable portable storage rack structure is mounted on the right upper side of the wireless communication equipment body; and a communication equipment protection frame structure is mounted at the rear part of the outer side of the wireless communication equipment body. According to the invention, the lower side protective sleeve can protect the bottom of the wireless communication equipment body and prevent the wireless communication ...

Heat pipe device and exhaust method

The invention relates to a heat pipe device and an exhaust method, a pipe body is provided with an assembling opening and a containing cavity communicating with the assembling opening, a sealing assembly is arranged at the assembling opening, and the sealing assembly is provided with an exhaust sealing hole. The exhaust piston is movably arranged in the containing cavity, and the peripheral side of the exhaust piston is movably matched with the inner wall of the containing cavity so that the containing cavity can be divided into a pressure cavity away from the assembling opening and an exhaust cavity close to the assembling opening. A liquid working medium is arranged in the pressure cavity, and when the temperature of the working medium in the pressure cavity is higher than the boiling point temperature, the gasified working medium can push the exhaust piston to move in the direction close to the sealing assembly, so that non-condensable gas in the exhaust cavity is pushed out of the containing ...

Static mixer of selective catalytic reduction (SCR) denitration system

Two stage hot pipe EGR cooler

The invention discloses a two-stage thermotube type EGR cooler. The two-stage thermotube type EGR cooler mainly consists of a shell with an exhaust gas inlet and an exhaust gas outlet respectively arranged on two ends of the cooler and a two-stage thermotube with heating sections arranged inside the shell. The thermotube is communicated with four pipe sections of a heating section, a steam tube, a condensation section and a condensation tube in turn from beginning to end; the heating sections of the two-stage thermotube are arranged along the exhaust gas flow direction in order; and the condensation sections of the two-stage thermotube are overlapped and arranged along the radiation wind blowing direction. In the two-stage thermotube, a first stage thermotube and a second stage thermotube respectively adopt water and methanol as cooling mediums. The two-stage thermotube type EGR cooler adopts the principle of cooling exhaust gas by the thermotube technology and has good cooling effect.

SCR (Selective Catalytic Reduction) post treatment system for preventing urea in exhaust pipeline from crystallizing

The invention discloses an SCR (Selective Catalytic Reduction) post treatment system for preventing urea in an exhaust pipeline from crystallizing. The SCR post treatment system comprises an exhaust pipeline, a heat exchanging device, a catalyzer and a catalyzer back pipeline which are connected in sequence, wherein a catalyst carrier is arranged in the catalyzer, and is coated with a catalyst. The SCR post treatment system is characterized in that: the heat exchanging device comprises an inner casing and an outer casing, wherein the outer wall of the inner casing is provided with at least one heat exchanging chip; an auxiliary flow channel which is accordant with the flow direction of tail gas is formed between the outer surface of the heat exchanging chip and the outer casing, and is communicated with a main flow channel in the inner casing; and the heat exchanging device is provided with a nozzle. By adopting the SCR post treatment system, a urea solution is prevented from crystallizing ...

Virtual-real interaction remote experiment system and method

The invention belongs to the technical field of remote experiments, and discloses a virtual-real interaction remote experiment system and method, and the system comprises an image mapping module, an image recognition module, a remote communication module, and a remote execution module. The image mapping module is used for displaying a 3D virtual image of a far-end laboratory for a user and shooting a hand action image; the image recognition module is used for deeply recognizing the relative position and the experiment gesture of the bare hand in the'virtual laboratory 'image, and establishing a three-dimensional space graph control system; the remote communication module is used for transmitting experiment information of a near-end user to a far-end laboratory and feeding back information of the far-end laboratory to the near end; and the far-end execution module is used for controlling equipment of a far-end laboratory to reproduce an experiment behavior according to the instruction and ...

Static mixer for automobile exhaust duct

The invention discloses a static mixer for an automobile exhaust duct. The static mixer comprises a pipe body, fins and a nozzle. The static mixer is characterized in that: the nozzle is arranged on the pipe body, the sections of the fins are 'V'-shaped, and a plurality of fins with different lengths is alternately and radically arranged in the pipe body. Gas disturbance can be effectively increased by adopting the 'V'-shaped fins, so that waste gas and urea are in full turbulent mixing through the mixer, achieve relatively high uniformity before entering a selective catalytic reduction (SCR)catalyst and further are fully reacted to reduce the NOx content of the automobile exhaust. The fins with different lengths are arranged across, so that different structures of the fins can be used for strengthening disturbance, and pressure drop caused by the middle material part can be reduced. By calculation and analysis of FIR special design software of automatic vehicle location (AVL), the mixer ...

Adaptive method of genetic algorithm

The invention discloses an adaptive method of a genetic algorithm. The adaptive method comprises the following steps: a, the crossover and the mutation of the genetic algorithm are changed so as to be adapt to a specific engineering problem; b, in order to be adapt to an evolutionary process, corresponding parameters are dynamically regulated during problem solution so as to enable the genetic algorithm to be more adaptive. The adaptive method of the genetic algorithm, disclosed by the invention, can overcome the defects of low reliability, complicated operating process, high cost and the like in the prior art so as to realize the advantages of high reliability, simple operating process and low cost.

Interactive mode shoe last shaping method based on human foot characteristic size

The invention discloses an interactive shoe last modeling method based on foot feature size, and the shoe last modeling method based on foot key size is to build a key contour curve through inputtingthe foot key size of a user and combine the contour curve into a shoe last curve frame for building shoe last sub-curves in blocks, and the shoe last sub-curves are spliced and faired for obtaining awhole shoe last curve; the shoe last modeling method based on a foot scanning model of the user introduces a user foot model, builds a foot feature model and a corresponding shoe last feature template, and combines the shoe last feature template and the contour curve to subdivide the initial grid surface of the shoe last feature template for obtaining a shoe last surface prototype; builds a unified shoe last model description; and adopts two modes of adjustment to the shoe last surface based thereon: scaling of the shoe last model based on size control or partial surface modification by adopting ...

Teaching building

The utility model provides a teaching building belongs to building technical field. It has solved the current little problem of school's playground area. This teaching building includes the roof and has a plurality of layers the building body, the roof is located the top of the building body, the both sides of the building body have the stair of being made by metal material respectively, anti -skidding bump has on the stair, having linked firmly all around of roof is reticular rail guard, the roof sets up the waterproof layer, annular runway has on the roof, the annular runway is located the position of keeping right on the roof, the department is equipped with two basketball courts in the middle of the annular runway, rest area has between two basketball courts, the length of two basketball courts including rest area's length equal the length of annular runway straight line runway, the width of two basketball courts equals the minimum width of annular runway straight line runway, the left ...

Homeobox gene HTF1 capable of regulating conidium germination of Magnaporthe grisea of and use thereof

The invention provides a homeobox gene HTF1 capable of regulating conidium germination of Magnaporthe grisea of and use thereof. Gene clone shows that the homeobox gene HTF1 is same to HTF1 sequence (MGG_00184.5) published by the Magnaporthe grisea genome database and comprises the typical structure domain of homeobox protein. The gene knock-out mutant losses the capability of generating conidium and conidiophore increases, and the rice inoculated by hypha block generates pathogenicity. The gene knock-out mutant restores the capability of generating conidium after function complementation test. The homeobox structure domain sequence is knocked out from the HTF1 gene therefore the Magnaporthe grisea can not generate conidium. The HTF1 gene can be used as the molecule target of the new pesticide design. The HTF1 mutant strain can be produced into engineering bacteria, thereby gradually reducing the stock number of the natural Magnaporthe grisea and playing important role in preventing and ...

Preparation method of green fluorescent protein marked coconut stem bleeding disease bacterium protoplast

The invention belongs to the field of molecular plant pathology, and particularly relates to a preparation method of a green fluorescent protein marked coconut stem bleeding disease bacterium protoplast. The preparation method has the beneficial effects that appropriate conditions for protoplast formation are determined, the high-quality protoplast is prepared by using 1mol/L mannitol as an osmotic stabilizer and 7.5mg/mL driselase as lyase, GFP (green fluorescent protein) is transferred to a coconut stem bleeding disease bacterium so as to obtain a stable genetic GFP pathogenic bacterium strain; therefore, a solid foundation is laid for genetic operations of the disease bacterium, such as GFP transformation and genetic expression, the cost is saved, the working efficiency can be greatly improved, and the research time is shortened; and meanwhile, the green fluorescent protein marked coconut stem bleeding disease bacterium facilitate the research on histopathology, disease epidemiology ...

Round hole centering circle tool

The invention discloses a round hole centering circle tool, which is used for centering round holes and describing circles on sections when round hole sections of different apertures are mechanically machined. The round hole centering circle tool mainly comprises a central shaft housing, a gear mandrel, a first rack arm, a second rack arm, a third rack arm, an angle dial, a staff circle describing arm, a fastening bolt, a fixing bolt, a handle and the like. The circle tool is suitable for centering inner holes of different apertures and describing the circles on the sections, in particular has more remarkable application effect on the inner holes of large apertures, has the characteristics of simple structure, simple and convenient mounting, simple operation method, accurate centering, convenient storage and convenient carrying, and can be used in relatively severer environments.

Dry-type transformer cooling system and wind driven generator

The invention relates to the technical field of wind power generation dry-type transformer cooling, in particular to a dry-type transformer cooling system and a wind driven generator. The dry-type transformer cooling system comprises a transformer cabin, a heat exchange device and a fan assembly, a plurality of transformers are arranged in the transformer cabin, the heat exchange device is installed in the transformer cabin and partially extends out of the transformer cabin, and the heat exchange device is used for receiving heat of the transformer cabin and transmitting the heat from one end in the transformer cabin to one end extending out of the transformer cabin; the fan assembly comprises at least one hot-side fan and at least one cold-side fan, the hot-side fan is arranged in a hot air loop of the transformer cabin and drives air in the transformer cabin to complete three-loop hot-side circulation, and the cold-side fan is arranged outside the transformer cabin and drives the air ...

Network type civil affairs multi-department information integrated assistance platform

The invention discloses a network type civil affairs multi-department information integrated assistance platform system, substantially consisting of a basic unit subsystem, a function examination and approval unit subsystem and a city manager subsystem. The invention not only can realize the informationization of each civil affairs department, the traditional civil affairs basic function such as the recording of low-security information, approval, allowance releasing, report statistics, and the like, but also can realize the cooperative work of the multi-department, jointly record social assistance service, share and integrate the data, and realize the integrated management of the whole social assistance resources, therefore, each service of the civil affairs can be effectively and fast carried out by computerizing and networking. The invention has the technical characteristics of openness, reliability, expandability and compatibility.

Optimization method of genetic algorithm

The invention discloses an optimization method of genetic algorithm. The optimization method comprises the following steps: (1) arithmetic crossover is regulated; (2) a boundary operator is adapt to a constrained optimization problem, and spherical crossover is performed; (3) gauss mutation is obtained according to an evolutionary strategy, one filial generation in the gauss mutation comprises two vectors, that is (chi and sigma). The meanings of the chi and the sigma respectively represent a certain point in space searching and standard deviation. The optimization method of the genetic algorithm, disclosed by the invention, can overcome the defects of low reliability, complicated operating process, high cost and the like in the prior art so as to realize the advantages of high reliability, simple operating process and low cost.

Combustion apparatus for EGR valve test

The invention discloses a combusting device used for an EGR valve test, which comprises a blower fan, an air cleaner, a first throttle valve, a second throttle valve, a combustor, an oil box, an oil pump, a fuel oil filter, an igniter, a first air inlet, a fuel oil spraying nozzle, a sparking plug and a second air inlet, wherein, the blower fan is respectively connected with the first throttle valve and the second throttle valve through the air cleaner, the first throttle valve is connected with the first air inlet of the combustor, the second throttle valve is mutually connected with the second air inlet of the combustor, the oil box is connected with the oil pump, the fuel oil filter and the fuel oil spraying nozzle in sequence, and the igniter is connected with the sparking plug. The combusting device can heat the inlet air by adopting a combusting and heat emitting method, to cause the oil and the air to be sufficiently mixed; both the air flow quantity and the air fuel ratio can be ...

Dust absorbing multi-hole eraser

The utility model relates to a dust absorbing multi-hole blackboard eraser, comprising a flat plate 1 and an eraser body fixedly connected with the flat plate, wherein, the eraser body is provided with a plurality of through holes which are vertical to the flat plate. A diamond structure of the utility model can cause the dust from all directions to be absorbed in a column hole of the eraser body, and the dust absorbing efficiency of the eraser body is ensured. The through holes of the utility model can be round holes, and can also be square holes. The utility model has the advantages of simple structure, reliable service performance, no need of worrying about failure occurrence and low manufacture cost. The dust absorbing function can be completed without adding excess members. The volume and the weight of the utility model are equally suitable for using at hand. The utility model can be widely popularized and utilized.

Round hole centering circle tool

The invention discloses a round hole centering circle tool, which is used for centering round holes and describing circles on sections when round hole sections of different apertures are mechanically machined. The round hole centering circle tool mainly comprises a central shaft housing, a gear mandrel, a first rack arm, a second rack arm, a third rack arm, an angle dial, a staff circle describing arm, a fastening bolt, a fixing bolt, a handle and the like. The circle tool is suitable for centering inner holes of different apertures and describing the circles on the sections, in particular has more remarkable application effect on the inner holes of large apertures, has the characteristics of simple structure, simple and convenient mounting, simple operation method, accurate centering, convenient storage and convenient carrying, and can be used in relatively severer environments.

Static mixer of vehicle selective catalytic reduction (SCR) device

The invention discloses a static mixer for an automobile exhaust duct. The static mixer comprises a pipe body, fins and a nozzle. The static mixer is characterized in that: the nozzle is arranged on the pipe body, the fins are in an integrated structure, the middle parts of the fins are provided with circular passages, and a bent arc backflow plate and a fluid passage are arranged on four sides of the fins. According to the static mixer for the automobile exhaust duct, the direction of the fluid passage is consistent with the spraying direction of the nozzle, and turbulent flow is formed on the spraying axis, so that the spayed mist is fully mixed with the automobile exhaust. In addition, intensive turbulent flow can be formed on the corresponding wall of the spayed mist, so that the spayed mist on the wall is quickly mixed and evaporated. Therefore, through the static mixer, the aqueous solution of urea jet by the nozzle and the tail gas can be fully mixed before entering a selective catalytic ...

Continuous rotary valve for EGR valve hot gas periodical impact fatigue durability test

Two stage hot pipe EGR cooler

The invention discloses a two-stage thermotube type EGR cooler. The two-stage thermotube type EGR cooler mainly consists of a shell with an exhaust gas inlet and an exhaust gas outlet respectively arranged on two ends of the cooler and a two-stage thermotube with heating sections arranged inside the shell. The thermotube is communicated with four pipe sections of a heating section, a steam tube, a condensation section and a condensation tube in turn from beginning to end; the heating sections of the two-stage thermotube are arranged along the exhaust gas flow direction in order; and the condensation sections of the two-stage thermotube are overlapped and arranged along the radiation wind blowing direction. In the two-stage thermotube, a first stage thermotube and a second stage thermotuberespectively adopt water and methanol as cooling mediums. The two-stage thermotube type EGR cooler adopts the principle of cooling exhaust gas by the thermotube technology and has good cooling effect. In ...

4-in-1 conticaster

A 4-in-1 continuous caster is composed of tundish, vibrating bench, supporting spring, vertical column, crystallizer, one-way pulse hydraulic cylinder, connecting bench, base anchor, withdrawal roller and dummy bar, and features that said tundish, vibrating bench, crystallizer and withdrawal roller are integrated in a whole unit. Said continuous caster can be equipped to 10t-0.5t electric furnaceto cast small square billet less than 60 cu.cum. Its advantages include small size, light weight, and less investment.

Exhaust gas recirculation valve and cooler combined test device

The invention discloses a test device for combining an exhaust gas recirculation valve with a cooler. Through a first three-way valve, a second three-way valve and a first four-way valve, a high-temperature gas device not only can be singly connected with a recirculation valve for exhaust gas to be tested, but also can be separately connected with a recirculation cooler for the exhaust gas to be tested, or can be jointly connected with the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested; then through a second four-way valve and a fourth three-way valve, a high-temperature gas device is connected to a flow meter for measuring the flow. Meanwhile, two additional switch valves are installed in a pipeline, so as to control theprecedence sequence during the combination measurement of the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested. The test device can be used ...

Hot plate cooler for wind power generation insulated gate bipolar transistor (IGBT) converter power module

The invention discloses a hot plate cooler for a wind power generation insulated gate bipolar transistor (IGBT) converter power module, which comprises an aluminum substrate, hot plates, radiating fins and a wind scooper, wherein all the parts are assembled together by bolts; and the heat of the aluminum substrate is transferred to the radiating fins by the hot plates, and is dissipated in an air cooling way. The hot plate cooler has the advantages that: 1) the hot plates can uniformly transfer a heat flow with non-uniform density produced by the IGBT converter power module on the back of the aluminum substrate to the radiating fins on the other sides of the hot plates by the peculiar performance of the hot plates to ensure a good radiating effect; 2) the side effect of cantilever stress is avoided by adopting the hot plates to transfer the heat; and 3) the hot plate cooler has a small volume, the total height of the hot plates and the radiating fins is reduced by 84 percent compared with ...

Self-adaptive anchor frame generation method, cloth defect detection method and device

The invention discloses a self-adaptive anchor frame generation method and a cloth defect detection method and device, and the method comprises the steps: carrying out the clustering of a plurality of clustering centers according to the length-width distribution statistics of a cloth defect data set image on the premise of maximizing the coverage rate of an anchor frame, sorting the clustering centers according to the length-width ratio, carrying out the grouping of the sorted clustering centers, and carrying out the detection of the cloth defect. And sampling the length-width ratio in the grouped clustering center, designing an anchor frame by using the sampled length-width ratio, and finally performing cloth defect detection. According to the method, through an anchor frame self-adaptive design strategy of clustering, sorting, grouping and sampling, a clustering algorithm, the coverage rate and the similarity among the anchor frames are integrated, the predefined anchor frame for the ...

Robot energy consumption modeling method and device based on multiple linear regression and dynamics

The invention discloses a robot energy consumption modeling method and device based on multiple linear regression and dynamics, and in the robot energy consumption modeling process, a dynamic and static dual-power model construction method is provided by considering that only dynamic energy consumption is calculated and the precision is difficult to guarantee in a traditional method. According to the method, on the premise that a joint angle curve is known in the movement process, firstly, speed and acceleration curves of all joints are solved through numerical differentiation; a robot joint torque curve is calculated based on a Newton-Euler method, so that dynamic power is solved; then collecting static power values of the key point locations of the robot, and constructing a multiple linear regression model, namely a static power model, based on a least square method; and the static power model and the dynamic power model are combined, so that the comprehensive energy consumption is calculated ...

Measuring instrument and measuring method of complex rotating part profile

The invention discloses a measuring instrument and measuring method of complex rotating part profile. The measuring instrument comprises a chassis rotating motor, a clamping device, a gantry frame, a self-resetting linear displacement sensor, a sliding table, a guide rail, a linear stepping motor, a rotary chassis, a base and a clamping handle. According to the invention, the profile data of a workpiece to be measured is measured by the self-resetting linear displacement sensor; the displacement sensor can be driven to move by the motor and the profile data can be collected at the same time by only clamping the workpiece to be measured through the clamping device and connecting a data acquisition device with the displacement sensor; the invention is suitable for measuring the profiles of various complex rotating parts processed through spinning, forging, milling and the like, and has the advantages of compact structure, convenient operation, low equipment cost, reliable measurement and ...

Multifunctional wiring tool

The invention discloses a multifunctional wiring tool, and relates to the field of wiring tools. The multifunctional wiring tool comprises a supporting seat and an electric hydraulic cylinder, a fixing plate used for fixing a wire is arranged above the supporting seat, an equipment seat is arranged at the bottom of the fixing plate, a rotating seat is in threaded connection with the interior of the equipment seat, and a movable seat is arranged at the top of the rotating seat; the two sides of the top of the movable base are provided with movable clamping plates and arc-shaped wire stripping tool bits installed in the movable clamping plates, the opposite sides of the two sets of movable clamping plates are provided with trapezoidal push blocks used for pushing the movable clamping plates to move, pull rods are installed at the bottoms of the trapezoidal push blocks, and the bottom ends of the pull rods are rotationally connected with the output ends of the electric hydraulic cylinders.

Battery thermal management system, new energy automobile and energy storage system

The invention relates to a battery heat management system, a new energy automobile and an energy storage system. The battery heat management system comprises a compressor, a first multi-way valve, a heat exchanger, a throttling valve and a battery heat exchange part. And when the battery module needs to be cooled, the outlet of the compressor, the first multi-way valve, the heat exchanger, the throttling valve, the battery heat exchange part and the inlet of the compressor are sequentially communicated to form a cooling loop, and the first working medium in the cooling loop can be condensed to release heat through the heat exchanger. When the battery module needs to be heated, an outlet of the compressor, the battery heat exchange part, the throttling valve, the heat exchanger, the first multi-way valve and an inlet of the compressor are sequentially communicated to form a heating loop, and a first working medium in the heating loop can evaporate and absorb heat through the heat exchanger ...

Neural network-based confluence clamp temperature early warning method and system, and medium

The invention discloses a convergence clamp temperature early warning method and system based on a neural network and a medium. Historical current data and historical temperature data generated by a convergence clamp are sampled; constructing a recurrent neural network model, and training the recurrent neural network model through the historical current data and the historical temperature data to obtain an optimal recurrent neural network model; acquiring current data and temperature data of the confluence clamp at the current moment, and performing continuous iterative updating processing on the current data and the temperature data through the optimal recurrent neural network model to obtain a predicted temperature; calculating an early warning coefficient corresponding to the predicted temperature based on the size of the predicted temperature and the sequence of the predicted time, and making an early warning prompt for the confluence clamp according to the early warning coefficient ...

Cutting machine with heaters for manufacturing thermoplastic honeycomb plates

The invention discloses a cutting machine with heaters for manufacturing thermoplastic honeycomb plates. The cutting machine comprises a framework. A moving frame, a heater device and an air exhaust hood are arranged on the framework, a plurality of support rods are fixed onto the moving frame at intervals, the tops of the support rods are linearly supported, air can be circulated among the support rods, a honeycomb is placed on the support rods in such a manner that double-layer composite pipes of the honeycomb are vertically erected, the honeycomb can be horizontally cut by the multiple heaters of the heater device, the air exhaust hood is mounted above the heaters and is connected with an air exhaust device, air is exhausted by the air exhaust hood when the honeycomb is cut by the heaters, upwardly flows along pipe holes of the double-layer composite pipes from the bottom of the honeycomb and is exhausted, accordingly, heat at cut positions of the honeycomb can be carried away, and the ...

Square flat modular chain structure

The invention belongs to the technical field of module deformable structure design, and relates to a square flat modular chain structure which is formed by connecting a plurality of square flat modules in a point overlapping mode through flexible materials arranged at the four corners of each module or positioning and connecting the modules through embedding structures arranged on the modules at the same time. Wherein the embedded structure positioning connection is specifically as follows: the peripheral edge of each module is provided with a sharp corner formed by 90-degree intersection of two slope narrow surfaces, the slope narrow surfaces on the two sides of the sharp corner are respectively provided with a convex structure and a concave structure, and two adjacent modules are positioned and connected through mutual embedding of the convex structures and the concave structures. The deformable structure can be freely bent to form various shapes based on the grid structure, the space ...

Hot pipe EGR cooler

The invention discloses a heat pipe EGR cooler, mainly comprising a shell and a heat pipe, wherein, two ends of the shell are provided with a waste gas inlet and a waste gas outlet respectively; and the heat pipe consists of a heating section, a steam pipe, a condensing section and a condensation pipe which are communicated from beginning to end. The invention is characterized in that the heating section is arranged in the shell. The principle of the invention is to adopt the heat pipe technology to cool waste gas, which can ensure that the temperature of the waste gas is lower and can effectively relieve the influence of the waste gas to the power per liter of the engine on the premise of the same recirculation waste gas amount. Meanwhile, the heat pipe EGR cooler can effectively reduce the negative effect of the reduced heat exchanging efficiency caused by caking, and can effectively avoid a leaking occasion of welding lines of flange faces between the shell and the waste gas inlet and ...

Radiation testing system for digital television station transmitting power under city environment

The invention relates to a radiation testing system for digital television station transmitting power under a city environment, and belongs to the field of radio transmission system performance index testing. The radiation testing system comprises a directional receiving antenna, power measuring equipment, a distance measuring and positioning device and a control device. The directional receiving antenna receives electromagnetic waves emitted by a digital television station, converts the electromagnetic waves into electric signals, and transmits the electric signals to the power measuring equipment. The power measuring equipment calculates the channel power Pr which is incident to the receiving antenna according to the electric signals. The distance measuring and positioning device measures the distance L between the receiving antenna and a transmitting antenna. The control device comprises an equivalent omnidirectional radiation power estimation module, and the equivalent omnidirectional ...

Planetary gearbox with supper large speed ratio and small teeth difference

The invention discloses a planetary gearbox with supper large speed ratio and small teeth difference, comprising an input gear train, an output gear train, an inner gear I and an inner gear II. The input gear train and the output gear train are joined together by the inner gear I and the inner gear II to transmit motive power. In the invention, by using the input gear train and the output gear train, the rotate speed is output by a structure that two small teeth differences fit with one planetary gear train, the structure is simple and compact and has super large reduction ratio, and simultaneously, motive power input is realized by two power dividing gear trains, the input and output modes of the existing gearbox with small teeth difference are changed, and motive power can be output stably while super large reduction ratio is obtained. The planetary gearbox can operate stably, has compact structure and small volume, and is suitable for some situations in which extreme requirements on ...

Excavator and control system for preventing interference of dozer blade of excavator

The invention relates to excavator control and provides an excavator and an anti-interference control system for a dozer blade of the excavator in order to solve the problem that the dozer blade in an existing excavator possibly interferes with the rear portion of an upper vehicle body. A controller in the control system presumes whether a dozer blade and the rear portion of an upper vehicle body enter an area where the dozer blade and the rear portion of the upper vehicle body can interfere with each other or not according to relevant angle detection values; the controller stops outputting a control signal for lifting the bulldozing blade upwards when the bulldozing blade enters the interference area again after the rear part of the upper vehicle body enters the interference area, and stops outputting a control signal for rotating the rear part of the upper vehicle body forwards when the rear part of the upper vehicle body enters the interference area again after the bulldozing blade enters ...

Linear point cloud axis vector automatic generation method

The invention belongs to the technical field of point cloud data processing, and discloses a linear point cloud axis vector automatic generation method, which comprises the following steps of: 1, eliminating outliers of a point cloud; step 2, carrying out adaptive projection on a point cloud top view; 3, closing the two-dimensional image and removing noisy points; 4, line shape distinguishing: rotating and iterating the image template by using an angle dichotomy, matching the template image and the two-dimensional mapping image through an image matching algorithm, and separating a dotted line shape from a long line shape or a curved line shape through a maximum matching threshold value; 5, extracting the linear axis of the dotted line; step 6, extracting linear iterative contours of long lines and curves; 7, removing the contour of a noise object; 8, polygon fitting axis extraction; and step 9, carrying out axis linear vector reflection. Automatic and high-precision axis vector extraction ...

Automatic dosing device and circuit thereof

The utility model relates to an automatic dosing device and circuit thereof. The automatic dosing device comprises a transmission component, a weighing component and a material-receiving component. The transmission component transmits materials to the weighing component, and the weighing component transmits the materials to the material-receiving component. The weighing component comprises a weighing container and an elevating column. The elevating column is fixedly connected to one side of the weighing container, and the materials in the weighing container are transmitted to the material-receiving component through the elevating column. Through the cooperation of the transmission component, the weighing component and the material-receiving component, the continuous integration in the weighing process can be realized. Through the control of the elevating column, the automation of the discharging process can be achieved.

Single-wheel four-rotor type ground-air dual-purpose robot

The invention relates to the technical field of unmanned aerial vehicles, in particular to a single-wheel four-rotor type ground-air dual-purpose robot which comprises a main rack, servo motors mounted on the inner side face of the main rack, a control module, an airborne computer, brushless motors mounted at the four corners of the outer side face of the main rack, and propellers in driving connection with the brushless motors. The supporting plate is installed and connected to the lower side of the main machine frame, the ox horn universal wheel is arranged at the bottom end of the supporting plate, the battery is installed on the inner side face of the supporting plate, the transmission mechanism is in meshed connection with the servo motor, and the wheel type mechanism is arranged and connected to one side of the inner side face of the main machine frame through the transmission mechanism. The robot provided by the invention has the characteristics of light weight, few power parts and ...

Crossing structure warning device that reflects light

The utility model relates to a crossing structure warning device that reflects light, characterized by, including arc and fixing device, fixing device installs the interior concave surface at the arc,and the cambered surface of arc is pasted and is had the reflective sticker layer. The utility model discloses rational in infrastructure, convenient to use through the cooperation of corresponding structure, can be applicable to all kinds of crossing structure, and simple to operate is lightly durable, brings very big facility for the construction. This harness is used repeatedly many times, andvery big reduction reflective sticker's use is extravagant, practices thrift cost 65%, has brought considerable economic benefits.

Production method of degradable diacetate fiber fabric

The invention discloses a degradable diacetate fiber fabric production method, which comprises: A, selecting a 100% diacetate fiber fabric as a gray fabric to obtain a product A; b, performing deoiling pretreatment on the product A by using a deoiling agent TF-115D to obtain a product B; c, performing overflow dyeing on the product B to obtain a product C; d, the product C is subjected to after-finishing, and a product D is obtained; and E, preshrinking the product D to obtain a finished product. The method has the characteristic that the color fastness and the strength performance of the 100% diacetate fiber fabric finished product can reach the clothing standard.

Constrained speed reducer with small teeth difference

The invention discloses a constrained speed reducer with small teeth difference, which comprises a shell, a power input shaft and a power output shaft, wherein the power input shaft is provided with a transmission inner tooth disc of inner engaging teeth through an eccentric sleeve, the power output shaft is fixedly matched and provided with an outer gear in the circumferential direction, and the outer gear is engaged with the inner engaging teeth of the transmission inner tooth disc in a small teeth difference mode; and eccentric shaft sections of constraint shafts in running fit with the shell pass through the transmission inner tooth disc and are in running fit with the transmission inner tooth disc, at least two constraint shafts are uniformly distributed along the circumferential direction, and the eccentric distance of the eccentric shaft sections is equal to that of the eccentric sleeve. The constrained speed reducer eliminates the relative spinning motion of a power input mechanism ...

Dual circulation cooling cooler on hot side of heat pipe wind generating set

The invention discloses a dual circulation cooling cooler on the hot side of a heat pipe wind generating set, which comprises a heat pipe bundle, a fan on the cold side, a circulating fan on the hot side and a wind scooper. The heat pipe bundle is arranged on the top plate of a generator room and is divided into two parts; and the circulating fan is arranged in the generator room. The dual circulation cooling cooler has the advantages that: firstly, the two centrifugal fans positioned in the generator room ensure that the air in the generator room forms a main circulating air passage and an auxiliary circulating air passage, which are convenient for the heat generated by the generating set to be immediately transferred to the heat pipe bundle. The motor of the centrifugal fan adopts external type; therefore, the influence on the service life of the motor by high temperature is avoided. Secondly, the integral structure is compact, the volume is small, and the weight is light. Thirdly, the ...

Main spindle hood of electric spark moulding machine

The invention discloses a main spindle hood of an electric spark moulding machine, comprising a main spindle hood body, a connecting pipeline, a medium purifying channel, a medium downlink channel upper port, a medium uplink channel upper port, a medium downlink channel, a medium downlink channel lower port, a medium uplink channel, a medium uplink channel lower port, an annular oil screen spraying channel, a main spindle connecting hole, a smoke purifying channel port and a smoke purifying channel. The main spindle hood of the electric spark moulding machine can circularly purify the electric spark processing media so as to guarantee the processing and moulding quality; and simultaneously an enclosed oil screen is formed in the moulding and processing region of the electric spark, and the harmful smoke generated by processing can be collected and purified through a smoke purifying port so as to eliminate the harmful ingredients in the discharged air, thus realizing green manufacturing.

Battery heat dissipation system

The invention relates to a battery heat dissipation system, the battery heat dissipation system comprises an evaporation end and a condensation end, the condensation end is provided with a condensation cavity, the evaporation end is provided with an evaporation cavity communicated with the condensation cavity, and the evaporation cavity is internally provided with a working medium; the battery is completely immersed in the liquid working medium, and the liquid level of the condensation cavity and the liquid level of the liquid working medium are arranged at intervals. When the temperature of the surface of the battery is higher than the preset temperature, the working medium can be changed into a gas state from a liquid state and is condensed in the condensation cavity, and the condensed liquid working medium can return to the evaporation cavity again. According to the battery heat dissipation system provided by the invention, the problem that uniform and rapid heat dissipation of different ...

Rigid-flexible coupled line-driven rehabilitation assisting glove

The invention discloses a rigid-flexible coupled line-driven rehabilitation assisting glove which comprises a glove wearing mechanism and a far-end driving device, the glove wearing mechanism comprises a hand fixing wearing part and four driving fingerstalls, and the wearing part and the fingerstalls are connected through flexible connecting joints and ropes; wherein the fingerstalls of the index finger and the middle finger are of a hinge type structure, and the hand joint angle is accurately controlled through the change of the line length based on the geometrical relationship of the fingerstall model. The far-end driving device is composed of a plurality of steering engines and a control panel. Besides, the finger abduction and adduction functions are added, the metacarpophalangeal joints and the near-end interphalangeal joints of part of fingers can be independently controlled, the far-end interphalangeal joints are driven by the near-end interphalangeal joints in a coupling mode, the ...

Multi-scale fusion robot grabbing detection method based on attention mechanism

The invention discloses a multi-scale fusion robot grabbing detection method based on an attention mechanism. The multi-scale fusion robot grabbing detection method is realized by constructing a grabbing detection model and training the grabbing detection model. According to the method, the remarkable characteristics of grabbing detection are highlighted, the influence of background information which does not contribute to object grabbing detection is reduced, and the efficiency of the grabbing detection model is improved. And meanwhile, a lightweight network design method is adopted, the requirements of the robot for grabbing instantaneity and accuracy can be met, and end-to-end grabbing detection is completed. Besides, the grabbing detection mode focusing on the characteristics of the target body in the disordered scene is more suitable for the perception mode of human beings, and the intelligent process of grabbing detection of the robot is further promoted. According to the method, ...

Method for designing three-dimensional cartoon toys based on pictures

The invention discloses a method for designing three-dimensional cartoon toys based on pictures. The invention adopts the following technical scheme: building the external contour lines of the cartoon toys according to the input toy pictures and building two-dimension-line contour frames of three-dimensional models according to the decomposed contour lines in the characteristic zone by adopting the contour extraction and vectorization technology based on deep tracing; respectively generating three-dimensional surfaces by adopting a three-dimensional modeling method according to the two-dimensional contour frames by adopting the surface modeling technology and modifying the surfaces by the three-dimensional surface modeling method to obtain three-dimensional model prototypes; and carrying out colored drawing or mapping on the surfaces of the three-dimensional models according to user input by adopting the colored drawing and mapping technology for the surfaces of the three-dimensional models ...

Cooling system bracket for construction machinery

The invention relates to a cooling system device, aiming at providing a cooling system bracket for construction machinery. The cooling system bracket comprises a heat exchanger mounting bracket provided with a heat exchanger mounting port; at least three heat exchanger mounting brackets are provided and installed in continous ring joint; a fan mounting bracket is positioned on the top surface of the heat exchanger bracket in ring joint and is provided with fan housing. The cooling system bracket has the beneficial effects that the cooling air cools each heat exchanger from four sides, thus ensuring lower temperature and being beneficial for heat exchange; the cooled hot air is exhausted upward from the top of the bracket, thus effectively avoiding recycle mixing of the hot air exhausted from the top and the lower cooled air; under the condition of the same cooling amount, the cooling system bracket is smaller in volume and light in weight and is convenient to maintain and replace the parts ...

Heat pipe type intercooler for vehicle

The invention discloses a thermotube type intercooler for vehicle. The intercooler mainly consists of an integral copper fin tube, a clapboard flange disc and a concave bottom shell; the concave bottom shell comprises an air inlet and an air outlet; the concave bottom shell is connected with a clapboard; the clapboard is provided with holes alternately; the flange disc is sleeved on the integral copper fin tube and is welded on the integral copper fin tube; the integral copper fin tube runs through the holes of the clapboard; and the flange disc is connected with the clapboard in the hole opening part. The thermotube type intercooler can replace the prior aluminum intercooler, can be arranged in the front of the prior aluminum intercooler so that pressurized air is subjected to partial radiation before entering the aluminum intercooler, can effectively reduce the temperature of inlet air in the aluminum intercooler, and solve the difficult technical problems of thermal fatigue and damage ...

Flight sphere trajectory prediction method and device

The invention discloses a flight sphere trajectory prediction method and device, and the method comprises the steps: carrying out the linearization of a sphere motion model with wind resistance, expanding the freedom degree of a wind resistance coefficient, updating the extended wind resistance coefficient through an iterative least square fitting method, and carrying out the pose estimation of a sphere position of a current frame through employing Kalman filtering based on the model; the method comprises the following steps: establishing a relationship between a wind resistance coefficient and sphere mechanical energy, obtaining a current frame measurement value of the mechanical energy through a sphere position measurement value so as to obtain a current frame measurement value of the wind resistance coefficient, carrying out iterative convergence on the wind resistance coefficient through an iterative minimum variance method, and finally carrying out forward discrete integration on a ...

Mixing device for diesel engine urea SCR system

The invention discloses a mixing device for diesel engine urea SCR system, comprises a tube body, a mixer fin device and a nozzle. The invention is characterized in that: the nozzle is arranged on the central axis of the tube body; the mixer fin device adjoins to the nozzle and is installed at the front end of the nozzle; the mixer fin device is composed of a set of fins; the main body of the fins is a sector structure twisting along the air-flow direction, and the arrangement direction of the fins is consistent with the spray axis direction; a set of inclined flow deflector is arranged in each fin. The mixer fin device of the invention guides the air-flow to flow to the center along the fin direction, and strong flow-disturbing can be formed in the fan-shaped center end to promote atomization and mixing of the spray at the nozzle exit, thereby fully mixing the urea aqueous solution injected from the nozzle and the tail gas before flowing into SCR catalytic reactor, reducing urea crystallization ...

Deoxynivalenol detection method based on single chain antibody, and kit

A method for detecting deoxy snow mold fusarine enol based on single chain antibody includes using separated single chain antibody of snow mold fusarine enol to detect relevant toxin deoxy snow mold fusarine enol and applying competitive enzyme-linked immunosorbent analysis to detect deoxy snow mold fusarine enol content in detected sample. The kit used for realizing said method is also disclosed.

Dual circulation cooling cooler on hot side of heat pipe wind generating set

The invention discloses a dual circulation cooling cooler on the hot side of a heat pipe wind generating set, which comprises a heat pipe bundle, a fan on the cold side, a circulating fan on the hot side and a wind scooper. The heat pipe bundle is arranged on the top plate of a generator room and is divided into two parts; and the circulating fan is arranged in the generator room. The dual circulation cooling cooler has the advantages that: firstly, the two centrifugal fans positioned in the generator room ensure that the air in the generator room forms a main circulating air passage and an auxiliary circulating air passage, which are convenient for the heat generated by the generating set to be immediately transferred to the heat pipe bundle. The motor of the centrifugal fan adopts external type; therefore, the influence on the service life of the motor by high temperature is avoided. Secondly, the integral structure is compact, the volume is small, and the weight is light. Thirdly, the ...

Garment design method based on three-dimensional sketch in any sight

The invention discloses a garment design method based on a three-dimensional sketch in any sight. The technical scheme is as follows: putting forward three-dimensional sketch interaction in any sight direction based on the human body distance field and octree structure storage technology, directly drawing the three-dimensional sketch lines of the garment on the surface of a three-dimensional mannequin, establishing three-dimensional style lines through de-noising, resampling and approximating and editing the style lines by utilizing the curve modeling technology to obtain a style drawing; obtaining a point in the garment piece area by utilizing an interpolation method according to the three-dimensional style drawing, generating three-dimensional garment piece meshes by utilizing a triangulation method and splicing the garment piece meshes to obtain the three-dimensional garment; and establishing a three-dimensional style template, generating fit style lines according to user input to obtain ...

Heat exchange tube with internal and external expanding surface

The invention relates to a heat exchange tube with internal and external extended surfaces, comprising a metal tube; a plurality of external ribs are cold-rolled on the outer wall of the metal tube, the section of the external rib which is vertical to the direction of the inflow is trapezoidal, the inner wall of the metal tube is provided with a plurality of internal ribs, and the section of the internal rib which is vertical to the direction of the inflow is trapezoidal. The internal rib is made by adopting the drawing technique, the upper bottom of the trapezoidal rib is the top of the rib, the lower bottom of the trapezoidal rib is the foot of the rib, the distance between the upper bottom and the lower bottom is the height of the rib and the distance between the feet of two adjacent ribs is the pitch; the metal tube extends a radiating surface inward, enhances the compactness of the structure, improves heat exchange efficiency and expands the application field; the internal ribs are ...

Method for detecting CCD marking defects at spherical opening of high-pressure natural gas bottle

The invention discloses a method for detecting CCD marking defects at a spherical opening of a high-pressure natural gas bottle, comprising the following steps of: under searchlighting of a light source, collecting a contour image of the natural gas bottle by adopting a CCD camera, transferring the image signals collected by an image collecting card to a computer to process and identify digital image, extracting characteristic parameters of the defect image as identifying foundation after image denoising, image binarization, image segmentation and defect extraction and storing the data of the image characteristic parameters to a database, and finally carrying out statistic on the whole defect image, transferring an optimized marking area to a control unit of a digital controlled manufacturing machine as a positioning signal when the carrying mechanism works after data calibration. The acquired marking defect image has obvious characteristics, simple and rapid corresponding image process ...

Cooler of heat pipe type wind generating set

The invention discloses a cooler of a heat pipe type wind generating set, comprising a heat pipe bundle, a cold-side fan, a hot-side circulating fan and a cold-side wind scooper, wherein the heat pipe bundle is arranged on a top plate of a power generating room and is divided into two parts, and the hot-side circulating fan is arranged into the power generating room. The invention has the advantages that: (1) a cooling fan can lead air to effectively form two circulating air paths in the power generating room and is helpful to immediately transferring heat generated by the wind generating set to the heat pipe bundle; (2) an integrated structure is compact and has small volume and light weight; and (3) the heat pipe is an inner-copper and outer-aluminum compound pipe, and an outer-layer aluminum pipe forms fins after carrying out a cold rolling process, therefore, the heat transfer area of the heat pipe is effectively increased.

Oil extraction field information acquisition device

The invention provides an oil extraction field information acquisition device, which comprises an oil extraction field information scanner shell, and is characterized in that a first transparent glass sheet is embedded at an opening in the left side in the oil extraction field information scanner shell; the left lower portion of the inner side of the oil extraction site information scanner shell is connected with a code scanning module through screws. A touch screen is connected to an opening in the middle of the upper portion of the inner side of the oil extraction site information scanner shell through screws. And the lower right part of the inner side of the oil extraction field information scanner shell is in screw connection with a mainboard. According to the invention, the arrangement of the grip, the cloth cover, the flexible anti-falling binding belt, the fixed ring, the spring buckle, the anti-falling rope and the movable ring is beneficial to the realization of a flexible anti-falling ...

Toggle rod type brake sticking device of double-plate injection moulding machine

The invention discloses a toggle two-plate injector internal contracting brake device. A left slider which is arranged on a left guide rod passes through a right slider through a connecting rod and is connected with a left slider on a right guide rod. And the right slider passes through the left slider on the right guide rod through the connecting rod and is connected with the right slider. A slider with stoppers on the left and on the right is connected with a toggle mechanism which comprises a hinge rod and hinge bearings. A piston rod of an obvolvent cylinder and a cylinder body are respectively connected with up and down hinge bearings. The two sliders are arranged in a box body which comprises a bottom plate and a baffle. The bottom plate is fixed on a movable template. The two sliders are respectively provided with a groove tallying with ring grooves on the guide rods. Driven by the obvolvent cylinder, the two sliders of every cohesion mechanism generate radial movement to clamp the ...

Static mixer of selective catalytic reduction (SCR) denitration system

The invention discloses a static mixer of a selective catalytic reduction (SCR) denitration system. The static mixer comprises a pipe body, fins and a nozzle. The static mixer is characterized in that: the nozzle is arranged on the pipe body, the section of each fin is 'V'-shaped, and a plurality of fins are radically arranged in the pipe body, and the fins are made by curving the steel plates into a certain angle. The 'V'-shaped fins are adopted in the static mixer, and the plurality of fins are eccentrically arranged, so that vortex is formed in the pipeline of the mixer to increase disturbance. By calculation and analysis of FIR special design software of automatic vehicle location (AVL), the mixer of the structure has low exhaust back pressure, and fulfills the purposes of fully mixing the jet urea and the jet tail gas without generating high pressure drop.

Integration air-float water treatment device

The invention provides an integration air-float water treatment device, which belongs to the technical field of the water treatment device, and comprises a coagulation reaction area and an air-floatation generation area; the coagulation reaction area comprises a water inlet pipe (1), a medicine storage device (2), a stabilization chamber (3), a dissolved gas release chamber (5), a separation chamber (6), a primary medicine charging device (11), a secondary medicine charging device (12) and a jet pump (13); and the air-floatation generation area comprises an inverted dissolved gas releaser (4), a dissolved gas release chamber (5), a separation chamber (6), a water outlet pipe (7), a mud discharging pipe (8), a slag discharging chamber (9) and an adjustable-type slag scraping plate (10). Compared with the prior art, the water treatment device has the advantages of simple structure, compact structure, small size, convenient operation and management, low cost, good application effect, no civil ...

Exhaust recycled valve multi-functional test device

The invention discloses a waste-gas recycling valve multi-function test apparatus. The gas outlet of a burner is successively connected with a cooler, a continuous rotary valve, one end of an overflow valve and the inlet of a waste-gas recycling valve under test; the gas inlet of a vacuum pump is successively connected with one end of the overflow valve, a two-position three-way valve and a vacuum tube of the waste-gas recycling valve under test; the outlet of the waste-gas recycling valve under test is successively connected with an exhaust cooler, a counterbalance valve, a high-temperature two-position three-way valve and a mass flowmeter, and then is filled with atmosphere; the water inlet of the cooler is successively connected with a speed-adjustable water pump and a cooling water tank; and the water outlet of the cooler is connected with a drain pipe. The invention can be used to test the flux characteristics of a waste-gas recycling pump, the dynamic characteristics of a vacuum waste-gas ...

Vehicle intercooler based on heat medium splitting technology

The invention discloses an intercooler gas chamber based on a heat medium splitting technology. In the intercooler gas chamber based on the heat medium splitting technology, the gas inlet direction of a gas inlet channel and the position of a gas inlet are adjusted by improving the structure of the gas chamber, and since well-designed guide vanes are inserted into the gas chamber, for an intercooler, good heat exchange performance is maintained, and simultaneously the internal drag energy consumption is greatly reduced.

Virtual teaching system and method based on remote experiment

The invention belongs to the technical field of internet distance education, and discloses a virtual teaching system and method based on a remote experiment, and the system comprises a near-end augmented reality mapping and operation module and an experiment teaching and training module, the near-end augmented reality mapping and operation module is used for displaying an experiment scene and data in a panoramic manner, carrying out the pose positioning, and carrying out the teaching and training. The experiment teaching and training module is divided into a teacher end and a student end, the teacher end is used for uploading and updating experiment teaching scenes and data and answering questions, the student end is used for modeling and restoring a teaching process and performing subsequent remote experiments, and the remote experiment execution module is used for executing corresponding experiment instructions of students and feeding back real sensor data. A traditional experiment teaching ...