CN207612151U - A kind of seal of anti-shaft current - Google Patents
A kind of seal of anti-shaft current Download PDFInfo
- Publication number
- CN207612151U CN207612151U CN201721833142.1U CN201721833142U CN207612151U CN 207612151 U CN207612151 U CN 207612151U CN 201721833142 U CN201721833142 U CN 201721833142U CN 207612151 U CN207612151 U CN 207612151U
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- bearing
- seal
- shaft
- shaft current
- insulating layer
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- Motor Or Generator Frames (AREA)
Abstract
The utility model is related to motor device technical fields, especially a kind of seal of anti-shaft current, including electric motor end cap, electric motor end cap bearing chamber is equipped with bearing, insulating layer is equipped between electric motor end cap and bearing, bearing is fixed on machine shaft, seal is equipped between bearing and machine shaft, seal includes insulating layer and insulated spacing collar.A kind of seal of the anti-shaft current of the utility model, the position that bearing is installed in motor shaft is covered with insulating layer, while installing insulated spacing collar in bearing inner race two sides, and insulated spacing collar is fixed by circlip again, achieve the effect that bearing and motor shaft insulation, shaft current is prevented to be flowed through from Bearing inner.
Description
Technical field
The utility model is related to motor device technical field, especially a kind of seal of anti-shaft current.
Background technology
Shaft current may be will produce using the inner rotor motor of electric drive controller.Regardless of power of motor size,
All there may be shaft voltage inside motor, charge accumulated to a certain extent, can discharge in motor bearings position, arc through
Lubricating oil film discharges on raceway and generates galvano-cautery, forms many galvano-cautery pits on raceway, damaged raceway,
It causes bearing noise to increase, can seriously motor failure be made to shut down.
Utility model content
Bearing is damaged in order to overcome the shortcomings of that existing motor internal current generates galvano-cautery to bearing, the utility model carries
A kind of seal of anti-shaft current is supplied, the position that bearing is installed in motor shaft is covered with insulating layer, while in bearing inner race two
Insulated spacing collar is installed in side, and insulated spacing collar is positioned by circlip clamping again.
Technical solution adopted by the utility model to solve its technical problems is：A kind of seal of anti-shaft current, packet
Electric motor end cap is included, electric motor end cap bearing chamber is equipped with bearing, insulating layer one is equipped between the electric motor end cap and bearing, bearing is fixed
On machine shaft, seal is equipped between bearing and machine shaft, seal includes insulating layer two and insulated spacing collar.
Further, including insulating layer two is covered in by way of being not limited to spraying on machine shaft.
Further, including on machine shaft the width dimensions of insulating layer two are more than the width of bearing inner race.
Further, including insulated spacing collar is fixed on bearing inner race two sides.
Further, including insulated spacing collar is located in bearing inner race two sides by circlip clamping.
Further, including machine shaft is equipped with the card slot for being embedded in circlip.
The utility model has the beneficial effects that a kind of seal of anti-shaft current of the utility model, pacifies in motor shaft
The position of dress bearing is covered with insulating layer, while installing insulated spacing collar in bearing inner race two sides, and insulated spacing collar is kept off by elasticity again
Clamping positioning is enclosed, achievees the effect that bearing and motor shaft insulation, prevents shaft current from being flowed through from Bearing inner, avoid inside motor
Bearing galvano-cautery caused by the charge of accumulation is flowed through in bearing internal external circle, to play the role of protecting bearing, avoid because
Shaft current flow through bearing made Bearing inner discharge and generate galvano-cautery, so that bearing is protected, bearing can with normal rotation,
Implement simple, at low cost, effectively extends the motor bearings service life.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 end caps and Bearing inner structural schematic diagram.
1. electric motor end cap in figure, 2. bearings, 3. insulating layers one, 4. machine shafts, 5. seals, 6. insulating layers two, 7.
Insulated spacing collar, 8. circlips, 9. card slots.
Specific implementation mode
If Fig. 1 is the structural schematic diagram of the utility model, a kind of seal of anti-shaft current, including electric motor end cap 1, electricity
1 bearing chamber of generator terminal lid is equipped with bearing 2, and insulating layer 1 is equipped between the electric motor end cap 1 and bearing 2, and bearing 2 is fixed on motor
In shaft 4, seal 5 is equipped between bearing 2 and machine shaft 4, seal 5 includes insulating layer 26 and insulated spacing collar 7.
In use, being covered with the insulation materials such as electrophoretic paint, plastics in bearing chamber by the method for being not limited to electrophoresis, spraying first
Material makes 2 outer ring of bearing insulate with electric motor end cap 1, avoids shaft current and flowed through inside bearing 2；Then in 4 shaft end of machine shaft
The position of installation bearing 2 is covered with insulating layer 26, can be used and is not limited to injection molding, the method for spraying is covered with the insulation materials such as plastics, ceramics
Expect, the width dimensions of insulating materials are more than the width of 2 inner ring of bearing on machine shaft 4, while being installed in 2 inner ring two sides of bearing
The material of insulated spacing collar 7, insulated spacing collar 7 is ambroin, and insulated spacing collar 7 is positioned by 8 clamping of circlip again, reaches bearing
2 and machine shaft 4 insulate effect, prevent shaft current flowed through from Bearing inner.
As shown in Figure 1, insulated spacing collar 7 is fixed on 2 inner ring two sides of bearing.Insulated spacing collar 7 is fixed by 8 clamping of circlip
Position is equipped with the card slot 9 for being embedded in circlip 8 in 2 inner ring two sides of bearing, machine shaft 4.
As shown in Fig. 2, the insulating materials such as electrophoretic paint, plastics are covered in bearing chamber by the method for being not limited to electrophoresis, spraying,
So that 2 outer ring of bearing is insulated with electric motor end cap 1, avoids shaft current and flowed through inside bearing 2.
It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art
Understand, in the case where not departing from spirit and scope as defined in the appended claims, many modifications can be made, change or wait
Effect, but all will fall within the protection scope of the utility model.
Claims (6)
1. a kind of seal of anti-shaft current, including electric motor end cap（1）, electric motor end cap（1）Bearing chamber is equipped with bearing（2）,
It is characterized in, the electric motor end cap（1）And bearing（2）Between be equipped with insulating layer one（3）, bearing（2）It is fixed on machine shaft（4）
On, bearing（2）And machine shaft（4）Between be equipped with seal（5）, seal（5）Including insulating layer two（6）With insulation every
Circle（7）.
2. a kind of seal of anti-shaft current according to claim 1, characterized in that the insulating layer two（6）Covering
In machine shaft（4）On.
3. a kind of seal of anti-shaft current according to claim 1, characterized in that the machine shaft（4）It is upper exhausted
Edge layer two（6）Width dimensions be more than bearing（2）The width of inner ring.
4. a kind of seal of anti-shaft current according to claim 1, characterized in that the insulated spacing collar（7）It is fixed
In bearing（2）Inner ring two sides.
5. a kind of seal of anti-shaft current according to claim 1, characterized in that the insulated spacing collar（7）Pass through
Circlip（8）Clamping is located in bearing（2）Inner ring two sides.
6. a kind of seal of anti-shaft current according to claim 1 or 5, characterized in that the machine shaft（4）On
Equipped with for being embedded in circlip（8）Card slot（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721833142.1U CN207612151U (en) | 2017-12-25 | 2017-12-25 | A kind of seal of anti-shaft current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721833142.1U CN207612151U (en) | 2017-12-25 | 2017-12-25 | A kind of seal of anti-shaft current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207612151U true CN207612151U (en) | 2018-07-13 |
Family
ID=62799785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721833142.1U Active CN207612151U (en) | 2017-12-25 | 2017-12-25 | A kind of seal of anti-shaft current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207612151U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463951A (en) * | 2019-01-21 | 2020-07-28 | 丹阳市正睿电工材料有限公司 | Motor insulation bearing chamber |
| WO2022152130A1 (en) * | 2021-01-15 | 2022-07-21 | 华为数字能源技术有限公司 | Electric motor shaft, electric motor and electric vehicle |
| CN115487706A (en) * | 2021-06-17 | 2022-12-20 | 中国石油化工股份有限公司 | Stirrer electric insulation structure, stirrer and LDPE polymeric kettle |
-
2017
- 2017-12-25 CN CN201721833142.1U patent/CN207612151U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463951A (en) * | 2019-01-21 | 2020-07-28 | 丹阳市正睿电工材料有限公司 | Motor insulation bearing chamber |
| WO2022152130A1 (en) * | 2021-01-15 | 2022-07-21 | 华为数字能源技术有限公司 | Electric motor shaft, electric motor and electric vehicle |
| CN115487706A (en) * | 2021-06-17 | 2022-12-20 | 中国石油化工股份有限公司 | Stirrer electric insulation structure, stirrer and LDPE polymeric kettle |
| CN115487706B (en) * | 2021-06-17 | 2024-04-26 | 中国石油化工股份有限公司 | Stirrer electric insulation structure, stirrer and LDPE (Low-Density polyethylene) polymerization kettle |
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