Radiator fan

The invention relates to a radiator fan which comprises a fan frame and an impeller arranged in the fan frame, wherein the fan frame comprises an annular side wall; the impeller comprises a wheel hub and a plurality of blades arranged on the wheel hub in an annular mode; the inner surface on the side wall of the fan frame forms an inclined plane gradually expanded in a radial direction from bottom to top; the inner surface of the side wall forms an inclined angle of theta 1 with the central axis of the radiator fan; the blades form inclined edges opposite to the inclined plane of the inner surface of the side wall at the end adjacent to the side wall; and the inclined edges form an inclined angle of theta 2 with the central axis of the radiator fan. The inner surface of the side wall of the radiator fan forms the inclined plane gradually expanded in the radial direction from bottom to top, and the moulded fan frame can be easily detached from a mould where the fan fame is located.

Axial fan

The invention relates to an axial fan which comprises a rotor, wherein the rotor comprises a wheel hub and a plurality of fan blades circularly arranged at the periphery of the hub; each fan blade comprises an external end which is far away from the hub; and a previous fan blade on the end surface of the external end of each fan blade towards the rotation direction of the axial fan is protruded with a convex plate. When the rotor rotates, the bulge can prevent partial air flow from leaking from the pressure faces of the fan blades to the periphery of the fan blades and prevent the leaked air flow from forming eddy current at the periphery of each fan blade and further forming an important source of the noises.

Fan assembly and fan assembling method

The invention relates to a fan assembly comprising a first fan and a second fan combined with the first fan. The first fan comprises a first fan frame and a first base arranged on the top of the first fan frame; the second fan comprises a second fan frame and a second base arranged at the bottom of the second fan frame; a plurality of locking sheets and a plurality of through holes are arranged between the first base and the second base, wherein the locking sheets and the through holes are mutually clamped; each locking sheet comprises an upright part extending upwards from the first base and a stop part horizontally extending from the end part of the upright part; each lock piece extends into the corresponding though hole and enables the stop part to hook the edge of the through hole; a plurality of positioning pins and a plurality of blind holes are arranged between the top end of the first fan frame and the bottom end of the second fan frame, wherein the positioning pins and the blind ...

Bearing system

The invention discloses a bearing system, which comprises a fixing sleeve and a bearing. An accommodating hole is formed in the fixing sleeve and the bearing is accommodated in the accommodating hole. The bearing system also comprises an elastic ring accommodated in the accommodating hole and sleeved on the periphery of the bearing; and the elastic ring is sandwiched between the fixing sleeve and the bearing and pressed against the outer surface of the bearing, so that the bearing is positioned in the accommodating hole of the fixing sleeve. In the bearing system, the elastic ring is pressed against the outer wall of the bearing so as to fix the bearing in the accommodating hole of the fixing sleeve, and the elastic ring applies elastic extrusion on the bearing, so that the risk that the shaft hole of the bearing is extruded and shrunk is reduced, the efficiency of the bearing system is improved and the abnormal sound generated in the rotating process of the bearing system is reduced.

Motor and its stator structure

The present invention discloses a stator structure of a motor which comprises a magnetic conductive element, a circuit board, a bus cable and a casing, wherein, the magnetic conductive element comprises at least one coil. The circuit board is arranged adjacent to the magnetic conductive element and is electrically connected to the coil. The bus cable is electrically connected to the circuit board or the coil. The casing comprises an upper casing and a lower casing which are respectively arranged at the opposite two side of the magnetic conductive element. The upper casing or lower casing comprises a first fixed structure, and one side of the bus cable or the circuit board is fixed in the first fixed structure.

Fan and motor thereof

The invention discloses a fan, which comprises a motor and an impeller, wherein the motor drives the impeller to rotate, and the motor comprises a base seat, a bearing, a stator, a rotor and a magnetic body. The central part of the base seat extends to form a bearing support; the bearing is arranged inside the bearing support; the stator is sleeved on the outer circumference of the bearing support; the rotor and the stator correspond to each other; a rotating shaft passes through the bearing; the magnetic body is arranged at the bottom of the bearing support, and is positioned close to one end of the rotating shaft.

Fan, motor and oil seal structure

The invention discloses an oil seal structure applied to motors. A motor is provided with a rotating shaft, a fluid bearing and a shaft tube part, wherein the fluid bearing is sleeved with the rotating shaft and is accommodated in the shaft tube part. The oil seal structure comprises a cover and at least one sealing element, wherein the cover is arranged around the rotating shaft and is connectedwith one end of the shaft tube part, and the sealing element is arranged around the rotating shaft and is positioned between the fluid bearing and the cover. The invention also discloses a motor having the oil seal structure, as well as a fan.

Hole grouting quality detection device and detection method

The invention belongs to the technical field of engineering construction quality detection, and discloses a hole channel grouting quality detection device and method, and the device comprises a grouting machine, a pressure meter, a flow meter, a hole channel grouting quality intelligent tester, a prestressed concrete beam, a prestressed hole channel and an embedded sensor chain; a grouting pipeline is arranged at one end of the prestressed duct; the embedded sensor chain comprises a chain and a plurality of pressure sensors arranged on the chain; the grouting machine, the flow meter, the pressure meter and the grouting pipeline are connected in sequence; the flowmeter is used for acquiring the flow value of the slurry; the pressure meter is used for acquiring a slurry pressure value of the slurry; the pressure sensor is used for acquiring an actually measured pressure value of slurry in the prestressed duct; and the duct grouting quality intelligent tester is used for calculating a plurality ...

Cooling fan

The invention relates to a cooling fan. The cooling fan comprises a base, a stator and a rotor, wherein the base is provided with a center column; the stator is fixed on the center column; the rotor can rotate relative to the stator; the stator comprises a stator iron core, an upper insulation frame and a lower insulation frame, wherein the upper insulation frame and the lower insulation frame are respectively arranged on the upper and lower surfaces of the stator iron core, the inner periphery of the upper insulation frame inwardly extends to form at least one lug; and at least one slot is formed on the center column; the lug is buckled in the slot. The lug in the upper insulation frame is matched with the slot on the center column so that the stator is more firmly installed on the center column, thereby preventing the stator from upwardly moving or dropping when the cooling fan is subjected to impact.

Fan and motor thereof

The invention discloses a fan, which comprises a motor and an impeller, wherein the motor drives the impeller to rotate, and the motor comprises a base seat, a bearing, a stator, a rotor and a magnetic body. The central part of the base seat extends to form a bearing support; the bearing is arranged inside the bearing support; the stator is sleeved on the outer circumference of the bearing support; the rotor and the stator correspond to each other; a rotating shaft passes through the bearing; the magnetic body is arranged at the bottom of the bearing support, and is positioned close to one end of the rotating shaft.

Method for fabricating dynamical pressure bearing

马达转子的承载盘的组装方法及其治具

An assembly process for bearing disc of motor rotor and fixture thereof, which can improve the skewness and concentricity for the bearing disc of motor rotor. The functional shaft fixture and adjustment shaft fixture are used for the installment of bearing disc and the rotor portion, making the specific functional shaft of the bearing disc superpose to the geometrical center of the functional shaft fixture, while the central shaft of the rotor portion superpose with the geometrical center of the adjustment shaft center, thus effectively improving the skewness and concentricity for the motor bearing disc.

马达转子及其制造方法

The invention provides a kind of motor rotor, which is made up of magnetic yoke and the rubber magnet in the magnetic yoke. The surface opposite to the magnetic yoke of the rubber magnet has one or several patterns. The manufacturing method of the motor rotor is: selects smooth rubber magnet, and forms one or several patterns on the side surface of the rubber magnet, then, the rubber magnet are bended into the shape correspondent to the inner surface of the magnetic yoke with the surface which has the patterns towards external, the places the rubber magnet into the magnetic yoke.

Bearing System

The invention provides a bearing system which comprises a sleeve and a bearing, wherein the sleeve is provided with a holding hole, which is formed with a bottom wall at one end. The bearing is held in the holding hole and is provided with an axle hole for supplying a revolving shaft to penetrate. The bearing system also comprises a wear-resistant sheet positioned between the bottom of the bearing and the bottom wall of the holding hole, which comprises an abut part and a plurality of lugs, wherein the lugs extend out of outer edge of the abutting part, the abutting part is opposite to the axle hole of the bearing, and an oil storage tank is formed between the adjacent lugs. In the bearing system, because the oil storage tank is arranged on the wear-resistant sheet of the bottom of the bearing, the lubricant overflowing from the bottom of the bearing can be stored in the oil storage tank of the wear-resistant sheet; and the lubricant stored in the oil storage tank can be absorbed into the ...

Fan, motor and oil seal structure

The invention discloses an oil seal structure applied to motors. A motor is provided with a rotating shaft, a fluid bearing and a shaft tube part, wherein the fluid bearing is sleeved with the rotating shaft and is accommodated in the shaft tube part. The oil seal structure comprises a cover and at least one sealing element, wherein the cover is arranged around the rotating shaft and is connected with one end of the shaft tube part, and the sealing element is arranged around the rotating shaft and is positioned between the fluid bearing and the cover. The invention also discloses a motor having the oil seal structure, as well as a fan.

Bridge deck fatigue crack monitoring method, device and system

The invention discloses a bridge deck fatigue crack monitoring method. The method comprises the following steps: setting a plurality of monitoring areas on a bridge, and collecting potential difference data in each monitoring area; wherein each piece of potential difference data comprises a plurality of potential differences, and each potential difference corresponds to one acquisition moment; respectively calculating a crack value corresponding to each monitoring area according to the corresponding potential difference data in each monitoring area; and generating crack value curves in one-to-one correspondence with the monitoring areas according to the crack values and the acquisition moments in the potential difference data, and determining the monitoring area where the fatigue crack is located according to the crack value curves. According to the invention, manual on-site patrol can be replaced, on-site real-time monitoring of bridge deck fatigue cracks is realized, hidden cracks in ...