CN217789458U - Variable frequency motor bearing insulation device - Google Patents
Variable frequency motor bearing insulation device Download PDFInfo
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- CN217789458U CN217789458U CN202221872143.8U CN202221872143U CN217789458U CN 217789458 U CN217789458 U CN 217789458U CN 202221872143 U CN202221872143 U CN 202221872143U CN 217789458 U CN217789458 U CN 217789458U
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- bearing
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Abstract
The utility model discloses a variable frequency motor bearing insulation device, the annular has been seted up to the interior circumference of bearing end cover, the annular inscription has the polytetrafluoroethylene insulated tape, the bearing inner cup is installed to the one end of bearing, the bearing enclosing cover is installed to the other end, be provided with insulating backing plate one between bearing and the bearing enclosing cover, the external diameter of insulating backing plate one equals with the internal diameter of bearing end cover, the internal diameter of insulating backing plate one is less than the internal diameter of bearing enclosing cover, be provided with insulating backing plate two between bearing and the bearing inner cup, the external diameter of insulating backing plate two equals with the internal diameter of bearing end cover, the internal diameter of insulating backing plate two is less than the internal diameter of bearing inner cup. The utility model discloses be equipped with the polytetrafluoroethylene insulating tape, stopped bearing end cover and bearing intermediate shaft current's production. Meanwhile, the insulating base plate I and the insulating base plate II are arranged at the two ends of the bearing, so that the generation of shaft current between the bearing outer cover and the bearing and the generation of shaft current between the bearing inner cover and the bearing are avoided.
Description
Technical Field
The utility model relates to a variable frequency motor bearing technical field especially relates to a variable frequency motor bearing insulation device.
Background
The frequency conversion motor mostly adopts an insulating bearing or an end cover adopts an insulating sleeve structure, and the cost of the insulating bearing is high, the production period is long, and the delivery date of the product is severely limited. The end cover adopts an insulating sleeve structure, the insulating sleeve is complex to produce and process, the fault rate is high, the insulating failure is easy to cause, the maintenance workload is large, and the maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned problem, provide a variable frequency motor bearing insulation device.
In order to solve the technical problem, the technical scheme of the utility model is that: the variable frequency motor bearing insulation device comprises a bearing, a bearing end cover is sleeved on the outer circumference of the bearing, a ring groove is formed in the inner circumference of the bearing end cover, a polytetrafluoroethylene insulation tape is pasted in the ring groove, the axial length of the polytetrafluoroethylene insulation tape is equal to that of the bearing, the thickness of the polytetrafluoroethylene insulation tape is 0.15mm, a bearing inner cover is installed at one end of the bearing, a bearing outer cover is installed at the other end of the bearing, a first insulation base plate is arranged between the bearing and the bearing outer cover, the first insulation base plate is of a circular ring-shaped structure, the outer diameter of the first insulation base plate is equal to that of the bearing end cover, the inner diameter of the first insulation base plate is smaller than that of the bearing outer cover, a second insulation base plate is arranged between the bearing and the bearing inner cover, the second insulation base plate is of a circular ring-shaped structure, the outer diameter of the second insulation base plate is equal to that of the bearing end cover, the inner diameter of the second insulation base plate is smaller than that of the bearing inner cover, and the first insulation base plate and the second insulation base plate are made of laminated glass cloth.
Furthermore, the thickness of the first insulating base plate and the second insulating base plate is 0.5mm.
The utility model discloses be equipped with the polytetrafluoroethylene insulating tape, stopped bearing end cover and bearing intermediate shaft current's production. Meanwhile, the insulating base plate I and the insulating base plate II are arranged at the two ends of the bearing, so that the generation of shaft current between the bearing outer cover and the bearing and the generation of shaft current between the bearing inner cover and the bearing are avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. a bearing; 2. a bearing end cap; 3. a polytetrafluoroethylene insulating tape; 4. a bearing outer cover; 5. a first insulating base plate; 6. an inner bearing cover; 7. and a second insulating base plate.
Detailed Description
The following describes the present invention with reference to fig. 1.
A bearing insulation device of a variable frequency motor comprises a bearing 1, a bearing end cover 2 is sleeved on the outer circumference of the bearing 1, a ring groove is formed in the inner circumference of the bearing end cover 2, a polytetrafluoroethylene insulation tape 3 is pasted in the ring groove, the axial length of the polytetrafluoroethylene insulation tape 3 is equal to that of the bearing 1, the thickness of the polytetrafluoroethylene insulation tape 3 is 0.15mm, a bearing inner cover 6 is installed at one end of the bearing 1, a bearing outer cover 4 is installed at the other end of the bearing 1, an insulation backing plate I5 is arranged between the bearing 1 and the bearing outer cover 4 and is of a circular ring structure, the outer diameter of the insulation backing plate I5 is equal to that of the bearing end cover 2, the inner diameter of the insulation backing plate I5 is smaller than that of the bearing outer cover 4, an insulation backing plate II 7 is arranged between the bearing 1 and the bearing inner cover 6 and is of a laminated glass cloth plate, the insulation backing plate II 7 is of a circular ring structure, the outer diameter of the insulation backing plate II 7 is equal to that of the bearing end cover 2, the inner diameter of the insulation backing plate II 7 is smaller than that of the bearing inner cover 6, the insulation backing plate I5 and the insulation backing plate II 7 are made of laminated glass cloth plate, and the thickness of the laminated glass cloth is 0.5mm.
In the variable frequency motor, loop current and induced current are arranged among a machine body, a bogie and a wheel shaft. When current passes through the bearing 1 in the rotation process of the bearing 1, a thin oil film at a rolling contact part is broken down, sparks are generated, partial melting damage is generated on a contact surface, and electric corrosion is generated. Resulting in failure of the bearing 1. In addition, the hardness of the rolling surface is reduced, and abrasion is easy to generate, so that the performance and the service life of the motor and even the host machine are directly influenced. So this technique is with cutting off current loop in the bearing as the principle, pastes one deck polytetrafluoroethylene insulating tape 3 in bearing 1's the position grooving of bearing end cover 2, and the both ends of bearing 1 are equipped with insulating backing plate one 5, insulating backing plate two 7 simultaneously, stop the production of axle current, ensure motor operation safe and reliable more to simple structure is practical, easy maintenance, low cost.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.
Claims (2)
1. Frequency conversion motor bearing insulation device, a serial communication port, including bearing (1), the outer circumference cover of bearing (1) is equipped with bearing end cover (2), the annular has been seted up to the inner circumference of bearing end cover (2), it has polytetrafluoroethylene insulating tape (3) to paste in the annular, the axial length of polytetrafluoroethylene insulating tape (3) equals with the axial length of bearing (1), the thickness of polytetrafluoroethylene insulating tape (3) is 0.15mm, bearing inner cup (6) is installed to the one end of bearing (1), bearing enclosing cover (4) is installed to the other end, be provided with insulating backing plate (5) between bearing (1) and bearing enclosing cover (4), insulating backing plate (5) are ring structure, the external diameter of insulating backing plate (5) equals with the internal diameter of bearing end cover (2), the internal diameter of insulating backing plate (5) is less than the internal diameter of bearing enclosing cover (4), be provided with insulating backing plate two (7) between bearing (1) and bearing enclosing cover (6), insulating backing plate two (7) are ring structure, the external diameter of insulating backing plate (7) equals with the internal diameter of bearing end cover (2), the internal diameter of insulating backing plate (7) is less than the material of insulating backing plate (7), the insulating backing plate (7) is the laminating glass.
2. The bearing insulation device for the variable frequency motor according to claim 1, wherein the thickness of the first insulation backing plate (5) and the second insulation backing plate (7) is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221872143.8U CN217789458U (en) | 2022-07-20 | 2022-07-20 | Variable frequency motor bearing insulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221872143.8U CN217789458U (en) | 2022-07-20 | 2022-07-20 | Variable frequency motor bearing insulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217789458U true CN217789458U (en) | 2022-11-11 |
Family
ID=83939863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221872143.8U Active CN217789458U (en) | 2022-07-20 | 2022-07-20 | Variable frequency motor bearing insulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217789458U (en) |
-
2022
- 2022-07-20 CN CN202221872143.8U patent/CN217789458U/en active Active
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