12results about How to "Reduce radial vibration" patented technology

The present invention relates to the field of permanent magnet motors, and discloses a built-in permanent magnet motor, comprising a housing, a stator core, a rotor core and a permanent magnet; the rotor core comprises at least two full-bridge lamination groups and at least one half-bridge lamination group, wherein the laminations in the full-bridge lamination group comprise a plurality of full-bridge punchings connected to a first central connecting bridge and distributed circumferentially, the laminations in the half-bridge lamination group comprise at least one separated punching that is disconnected from a second central connecting bridge and distributed circumferentially, and the full-bridge lamination group and the half-bridge lamination group are stacked axially, and each half-bridge lamination group is located between two full-bridge lamination groups, so that adjacent sectors in the same lamination layer of the full-bridge lamination group are asymmetric, and the permanent magnet is placed in the slot between the adjacent sectors. The present invention can simplify the production process of the motor and improve the structural strength of the motor.

The double W-shaped combined metal sealing structure is used for the roller bit. The dynamic sealing ring is located at the top of the sealing cavity, interference fits in the inner hole of the roller, and rotates with the roller. The sealing cavity is surrounded by the inner hole of the roller and the root of the roller shaft neck. The dynamic sealing ring and the static sealing ring rotate relatively, and the end faces cooperate with each other to form a dynamic sealing surface. An outer rectangular groove is provided on the outer cylindrical surface of the upper part of the static sealing ring. An outer W-shaped rubber ring is embedded in the outer rectangular groove. The opening of the outer W-shaped rubber ring faces the outer cylindrical surface of the sealing cavity. The outer W-shaped rubber ring fits tightly with the static sealing ring and the outer cylindrical surface of the sealing cavity to form a static sealing surface. The bottom of the static sealing ring is embedded in the groove of the inner W-shaped rubber ring. The inner W-shaped rubber ring is compressed and embedded between the static sealing ring and the root of the roller shaft neck, and keeps tight fit with the static sealing ring, the lower end surface of the sealing cavity and the inner cylindrical surface to form a static sealing surface. The opening of the inner W-shaped rubber structure faces the inner cylindrical surface of the sealing cavity. An oil storage tank is provided on the groove of the inner W-shaped rubber ring.

The application provides a compressor and an air conditioner, the compressor comprising: a shell, an inside of the shell being provided with a positioning structure, the positioning structure dividing the inside of the shell into a first containing cavity and a second containing cavity; a stator core, the stator core being arranged in the first containing cavity, and at least part of the positioning structure being connected with a first end of the stator core; a snap ring assembly, the snap ring assembly being arranged in the first containing cavity, the snap ring assembly comprising a plurality of clamping portions, the snap ring assembly being connected with a second end of the stator core through the clamping portions, and a first backflow channel being formed between adjacent clamping portions and between part of an outer wall of the stator core and part of a surface of the first containing cavity; and a pump body assembly, the pump body assembly being arranged in the second containing cavity, and the first backflow channel being arranged in communication with the second containing cavity. The path of vibration transmission of the stator core to the shell can be blocked, an efficient oil return channel can be constructed to improve the oil return efficiency of the compressor, and the problems of excessive vibration and noise of the motor part of the compressor and low heat dissipation efficiency of the motor can be solved.

The utility model provides a motor end cover structure and a motor, the motor end cover structure comprises a cover body, a bearing seat and a reinforcing rib assembly, the outer periphery of the cover body is provided with an annular projection, the bearing seat is arranged on the cover body, and an annular installation space is formed between the inner wall surface of the annular projection and the outer wall surface of the bearing seat. The reinforcing rib assembly comprises first reinforcing ribs and second reinforcing ribs, the multiple first reinforcing ribs are arranged in the circumferential direction of the bearing seat at intervals, one ends of the first reinforcing ribs are connected with the bearing seat, and the other ends of the first reinforcing ribs extend in the radial direction of the cover body and are connected to the annular protrusion; a second reinforcing rib is arranged between every two adjacent first reinforcing ribs, and the distance between the first end of each second reinforcing rib and the axis of the bearing seat is smaller than the distance between the second end of each second reinforcing rib and the axis of the bearing seat. The structure that the first reinforcing ribs and the second reinforcing ribs are arranged in a matched mode can solve the problem that in the prior art, a motor end cover cannot overcome tangential vibration, and consequently the performance of a motor is affected.

The utility model discloses an explosion-proof axial flow fan with a temperature rise control function, which comprises an air duct, a supporting seat fixed in the air duct, and a fan fixed on the supporting seat, a first cavity is arranged in the supporting seat, the first cavity is provided with an input port and an output port, and the output port is provided with a second cavity. A plurality of heat dissipation fins are evenly distributed on the supporting base with the circle point as the axis, each heat dissipation fin is provided with a second cavity and communicated with the first cavity, and a damping device is arranged at the connecting position of the supporting base and the air duct and used for reducing noise generated when the draught fan operates. Cooling liquid media are continuously conveyed into the first cavity and the second cavity through the input port, the temperature of the fan is reduced, meanwhile, the temperature of the output air volume of the fan is reduced, radial movement or shaking generated when the fan operates is reduced through the damping device, and the product has the advantages of controlling temperature rise and reducing noise.

The utility model discloses a crankshaft shock absorber and an automobile, the crankshaft shock absorber is connected to one end of a crankshaft through a mounting hole in a hub, and a first inertia ring and a second inertia ring form a secondary inertia ring, so that the rotational inertia of the end part of the crankshaft is increased, and the vibration frequency of the shock absorber is effectively reduced. Moreover, the first elastic vibration reduction part located on the outer side of the hub reduces radial vibration and torsional vibration generated when the crankshaft works through elastic deformation in the radial direction, and the second elastic vibration reduction part located on the side away from the mounting hole reduces vibration generated when the crankshaft works through elastic deformation in the axial direction. The problems that the crankshaft is bent after working for a long time and interferes with other parts to generate abnormal sound, or the crankshaft is subjected to fatigue damage after rotating at a high speed are solved, and the service life of the crankshaft is further prolonged. The transmission process of the automobile with the crankshaft shock absorber is smoother, and therefore the riding comfort of the automobile is improved.

An auxiliary slot stator punching sheet, a stator assembly, a motor, and a compressor relate to the technical field of motors. The auxiliary slot stator punching sheet comprises a stator punching sheet, and an auxiliary slot is provided at the slot shoulder of the stator punching sheet. The present invention reduces the motor tooth slot torque and torque pulsation by providing an auxiliary slot at the slot shoulder of the stator punching sheet, reduces the tangential vibration of the motor, optimizes the sinusoidality of the motor air gap magnetic density, reduces the harmonics of the air gap magnetic density, further reduces the radial vibration of the motor, reduces the overall vibration of the motor, and thus reduces the vibration noise.

The invention provides a combustion chamber interstage section structure which is made of a ceramic matrix composite material and comprises a first annular structure, a second annular structure and a supporting ring face located between the first annular structure and the second annular structure. The metal switching section comprises a connecting piece and a baffle plate, and the connecting piece and the baffle plate are opposite to each other and define an annular groove for accommodating the second annular structure; the axial elastic sheet is arranged between the baffle and the interstage section and is positioned on the periphery of the supporting ring surface; the radial elastic piece is located in the annular groove and arranged on the radial outer side of the second annular structure. And the fastener is used for fastening the connecting piece and the baffle and enabling the connecting piece and the baffle to clamp the second annular structure. By means of the structure, the interstage section of the ceramic matrix composite can release thermal deformation in the axial direction and the radial direction in time, and thermal stress is reduced. A combustion chamber and an aero-engine are also provided.

This application discloses an automatic grinding device for angle steel saw blades, relating to the technical field of metal processing equipment. It includes a base, a positioning shaft, a fixing structure, an angle steel saw blade feeding mechanism, a damping braking mechanism, and a grinding mechanism. The feeding mechanism drives the saw blade to rotate and controls each rotation by one tooth pitch angle, achieving precise feeding of the saw blade. The damping braking mechanism eliminates the rotational inertia of the saw blade, allowing it to stop accurately. The grinding mechanism precisely grinds each tooth of the saw blade, ensuring grinding quality and achieving automated grinding of angle steel saw blades, thus improving grinding efficiency and quality.

The utility model discloses a flexible coupling which comprises a driving shaft connecting part, an input flange, a driven shaft connecting part and an output flange, the input flange is arranged on the driving shaft connecting part, the output flange is arranged on the driven shaft connecting part, and the input flange is connected with the output flange through a steel wire rope. The two ends of the steel wire rope are bent and then fixedly arranged on the input flange and the output flange through steel wire rope clamps respectively. A first protruding part and a second protruding part are arranged on the opposite faces of the input flange and the output flange respectively, a high-elasticity rubber block is arranged between the first protruding part and the second protruding part, and a first groove and a second groove are formed in the positions, corresponding to the high-elasticity rubber block, of the first protrusion and the second protrusion. After the first flange and the second flange are connected, the upper portion of the high-elasticity rubber block is exactly embedded in the first groove, and the lower portion of the high-elasticity rubber block is exactly embedded in the second groove. When the coupler transmits torque, axial and radial vibration can be reduced, and vibration and noise of equipment are reduced.

The embodiment of the invention provides a water purifier. The water purifier comprises a body and a noise reduction device, the noise reduction device comprises a shell and a vibration reduction assembly, and a fluid channel is formed between the vibration reduction assembly and the inner wall face of the shell. The vibration reduction assembly comprises a cavity and a damping piece, and the damping piece is contained in the cavity. In the embodiment of the invention, when water flow passes through the conveying pipeline and vibrates, the damping piece can reduce water flow vibration and noise according to the self mass and inertia effect. Meanwhile, when the number of the damping pieces is multiple, the damping pieces can move correspondingly and mutually along with water flow and / or vibration during operation of the water purifier, vibration energy is generated, the noise reduction effect of the water purifier is effectively improved, and the problems of vibration and noise which are difficult to overcome by a common water purifier are solved.

The utility model relates to the technical field of pipeline brackets, in particular to a vibration reduction and heat insulation pipe frame which comprises a base plate, a support, a pipe clamp, a heat insulation assembly, an inverted-U-shaped clamp and a vibration reduction assembly, the support is arranged in the middle of the top end of the base plate, the pipe clamp is installed at the top end of the support, a pipeline is hooped by the pipe clamp, the heat insulation assembly is arranged between the pipeline and the pipe clamp, and the inverted-U-shaped clamp is arranged on the base plate. The inverted-U-shaped clamp is arranged over the pipe clamp and presses the pipe clamp, and the left side and the right side of the inverted-U-shaped clamp are connected with the base plate through the vibration reduction assemblies respectively. The utility model provides a vibration reduction and heat insulation pipe frame which is simple in structural design, can bear load and has vibration reduction and heat insulation effects.