Motor bearing chamber assembly and motor

Abstract

The invention discloses a motor bearing chamber assembly and a motor. The motor bearing chamber assembly comprises a bearing chamber body, a bearing seat and a sealing structure. The bearing chamber body is of a double-layer composite structure with an inner copper alloy layer and an outer aluminum alloy layer, and a plurality of heat dissipation hole channels are formed in the bearing chamber body in the axial direction. A spiral oil guide groove is formed in the inner wall of the bearing seat, a plurality of lubricating oil holes are evenly distributed in the groove bottom of the spiral oil guide groove, and a stepped positioning boss is arranged at the end of the bearing seat. The sealing structure comprises a labyrinth sealing ring embedded in the open end of the bearing chamber and a magnetic sealing cover connected through a buckle, and the space between the magnetic sealing cover and the labyrinth sealing ring is filled with high-temperature-resistant sealant. The motor has the advantages of being excellent in heat dissipation performance, uniform in lubrication, stable in installation, high in sealing performance and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a motor bearing chamber assembly and a motor. Background Art

[0002] Traditional motor bearing chambers mostly use a single metal material, with insufficient heat dissipation performance, which easily leads to overheating of the bearings during long-term operation; the lubrication structure is designed roughly, and the oil distribution is uneven; moreover, the bearing installation and positioning accuracy is low, and it is easy to shift due to vibration. Therefore, there is an urgent need for a motor bearing chamber assembly and a motor with optimized structure, high heat dissipation efficiency and stable installation. Summary of the Invention

[0003] In view of the above problems, the present invention provides a motor bearing chamber assembly and a motor, which have the advantages of excellent heat dissipation performance, uniform lubrication, stable installation and strong sealing performance.

[0004] The technical solution of the present invention is as follows:

[0005] A motor bearing chamber assembly includes a bearing chamber body, a bearing seat and a sealing structure;

[0006] The bearing chamber body is a double-layer composite structure with an inner layer of copper alloy and an outer layer of aluminum alloy, and a plurality of heat dissipation channels are axially arranged inside;

[0007] The inner wall of the bearing seat is provided with spiral oil guide grooves, the bottom of the spiral oil guide grooves is evenly distributed with a plurality of lubricating oil holes, and the end of the bearing seat is provided with a stepped positioning boss;

[0008] The sealing structure includes a labyrinth sealing ring embedded at the opening end of the bearing chamber, and a magnetic sealing cover connected by a buckle, and a high-temperature resistant sealing glue is filled between the magnetic sealing cover and the labyrinth sealing ring.

[0009] In a further technical solution, an annular permanent magnet is embedded in the magnetic sealing cover, and the surface of the permanent magnet is covered with a polytetrafluoroethylene or ceramic protective layer.

[0010] In a further technical solution, the heat dissipation channels are arranged in a staggered manner in the circumferential direction of the bearing chamber body, and the included angle between adjacent heat dissipation channels is 15° - 30°.

[0011] In a further technical solution, a shock-absorbing ring is further arranged on the outer wall of the bearing chamber body, the shock-absorbing ring is made of rubber or silica gel, and a metal reinforcing mesh is embedded therein.

[0012] In a further technical solution, the diameter of the lubricating oil holes is 0.8 mm - 1.5 mm, and one lubricating oil hole is arranged at a circumferential interval of 90° - 120° for each spiral oil guide groove.

[0013] In a further technical solution, the high-temperature resistant sealant is silicone rubber or fluororubber colloid, and its temperature tolerance range is -40°C to 200°C.

[0014] In a further technical solution, a dovetail groove structure is provided at the connection between the bearing housing body and the bearing seat, and it is fixed by high-strength bolts.

[0015] The present invention also provides a motor, and this motor is provided with the above-mentioned motor bearing housing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the motor bearing housing assembly according to the embodiment of the present invention.

[0017] Description of the reference numerals:

[0018] 10. Bearing housing body; 11. Heat dissipation channel; 20. Bearing seat; 21. Spiral oil guide groove; 22. Lubricating oil hole; 31. Labyrinth seal ring; 32. Magnetic seal cover; 40. Positioning boss; 50. Permanent magnet; 60. Shock-absorbing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the embodiments of the present invention with reference to the drawings.

[0020] Embodiment 1:

[0021] A motor bearing housing assembly, as Figure 1 shown, includes a bearing housing body, a bearing seat and a sealing structure;

[0022] The bearing housing body is a double-layer composite structure with an inner layer of copper alloy and an outer layer of aluminum alloy, and a plurality of heat dissipation holes are axially opened inside;

[0023] The inner wall of the bearing seat is provided with a spiral oil guide groove, the bottom of the spiral oil guide groove is evenly distributed with a plurality of lubricating oil holes, and a stepped positioning boss is provided at the end of the bearing seat;

[0024] The sealing structure includes a labyrinth seal ring embedded at the opening end of the bearing housing, and a magnetic seal cover connected by a buckle, and a high-temperature resistant sealant is filled between the magnetic seal cover and the labyrinth seal ring.

[0025] In another embodiment, as Figure 1 shown, an annular permanent magnet is embedded in the magnetic seal cover, and the surface of the permanent magnet is covered with a polytetrafluoroethylene or ceramic protective layer.

[0026] In another embodiment, the heat dissipation holes are arranged staggeredly in the circumferential direction of the bearing housing body, and the included angle between adjacent heat dissipation holes is 15° - 30°.

[0027] In another embodiment, asFigure 1 As shown, it further includes a shock-absorbing ring provided on the outer wall of the bearing chamber body. The shock-absorbing ring is made of rubber or silica gel and is embedded with a metal reinforcement mesh.

[0028] In another embodiment, the diameter of the lubricating oil hole is 0.8 mm - 1.5 mm, and one lubricating oil hole is provided at a circumferential interval of 90° - 120° for each spiral oil guiding groove.

[0029] In another embodiment, the high-temperature resistant sealant is silicone rubber or fluororubber colloid, and its temperature tolerance range is -40°C - 200°C.

[0030] In another embodiment, a dovetail groove structure is provided at the connection between the bearing chamber body and the bearing seat and is fixed by high-strength bolts.

[0031] Embodiment 2:

[0032] A motor is assembled with the motor bearing chamber assembly described in the above embodiment.

[0033] The above embodiments only represent the specific implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A motor bearing chamber assembly, characterized in that, It includes a bearing chamber body, a bearing seat and a sealing structure; The bearing chamber body is a double-layer composite structure with an inner layer of copper alloy and an outer layer of aluminum alloy, and a plurality of heat dissipation channels are axially arranged inside; The inner wall of the bearing seat is provided with spiral oil guiding grooves, and a plurality of lubricating oil holes are evenly distributed at the bottom of the spiral oil guiding grooves. A stepped positioning boss is provided at the end of the bearing seat; The sealing structure includes a labyrinth sealing ring embedded at the opening end of the bearing chamber, and a magnetic sealing cover connected by a buckle. A high-temperature resistant sealant is filled between the magnetic sealing cover and the labyrinth sealing ring.

2. The motor bearing chamber assembly according to claim 1, wherein, An annular permanent magnet is embedded in the magnetic sealing cover, and the surface of the permanent magnet is covered with a polytetrafluoroethylene or ceramic protective layer.

3. The motor bearing chamber assembly according to claim 1, wherein, The heat dissipation channels are arranged in a staggered manner in the circumferential direction of the bearing chamber body, and the included angle between adjacent heat dissipation channels is 15°-30°.

4. The motor bearing chamber assembly according to claim 1, characterized in that It also includes a shock-absorbing ring provided on the outer wall of the bearing chamber body. The shock-absorbing ring is made of rubber or silica gel and is embedded with a metal reinforcement mesh.

5. The motor bearing chamber assembly according to claim 1, characterized in that, The diameter of the lubricating oil hole is 0.8mm-1.5mm, and one lubricating oil hole is arranged at a circumferential interval of 90°-120° for each spiral oil guiding groove.

6. The motor bearing chamber assembly according to claim 1, characterized in that The high-temperature resistant sealant is a silicone rubber or fluororubber colloid, and its temperature tolerance range is -40°C-200°C.

7. The motor bearing housing assembly according to claim 1, characterized in that, A dovetail groove structure is provided at the connection between the bearing chamber body and the bearing seat and is fixed by high-strength bolts.

8. A motor, characterized in that, It includes the motor bearing chamber assembly according to any one of claims 1-7.

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