CN204578321U - For the insulated end cover of flame-proof converter asynchronous motor - Google Patents
For the insulated end cover of flame-proof converter asynchronous motor Download PDFInfo
- Publication number
- CN204578321U CN204578321U CN201520292089.3U CN201520292089U CN204578321U CN 204578321 U CN204578321 U CN 204578321U CN 201520292089 U CN201520292089 U CN 201520292089U CN 204578321 U CN204578321 U CN 204578321U
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- CN
- China
- Prior art keywords
- bearing
- cover
- flame
- end cover
- asynchronous motor
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Abstract
The utility model discloses a kind of insulated end cover for flame-proof converter asynchronous motor, comprise the bearing being connected to motor main shaft, the end cap be located at the internal bearing cover of bearing both sides and bearing end cover and be located at above bearing, one end of described bearing is stuck end, very close to each other between the seam end face of its side and internal bearing cover and bearing end cover, the other end is the non-stuck end leaving gap, described bearing is positioned at stuck end and is provided with insulating washer, be positioned at the end cap above described bearing and be set with the material capability insulating case close with it along the radial direction of outer ring and axis, the mating surface of described end cap and insulating case is the conical surface, the both sides being positioned at described mating surface are provided with at least one for fixing sunk screw.The utility model overcomes high, the price of bearing mnanufacture cost and the flimsy defect of surface of insulating layer that existing insulation bearing exists, and is applicable to flame-proof converter asynchronous motor, and can adapts to the multiple mounting structure pattern of motor, economical and practical.
Description
Technical field
The utility model relates to asynchronous motor technical field, particularly relates to a kind of insulated end cover for flame-proof converter asynchronous motor.
Background technology
Flame-proof converter asynchronous motor realizes stepless time adjustment by inverter supply, in inverter supply process, semiconductor element in it can produce the high-frequency induction shaft current of size from a few KHz to megahertz because connecing disconnected fast, the path of shaft current of warp beam → bearing → end cap → support produces electroerosion to bearing again, the working face of damage bearing, thus affect the normal work of asynchronous motor.
For above-mentioned situation, insulation bearing or insulated end cover are selected in the measure usually taked.Wherein the outer of insulation bearing is arranged with the thick insulating barrier of one deck 100um, and this insulating barrier is 50M Ω just as a resistance, has the ability of enough opposing electric currents.But insulation bearing exists, and manufacturing cost is high, the shortcoming of price, and insulating barrier mostly has certain fragility, fragile surface of insulating layer in use or dismounting, causes failure of insulation.Insulated end cover then by covering a kind of insulating material thereon, can block the path of shaft current of axle → bearing → end cap → support, plays the effect of protection rolling bearing.The patent No. be 201010300336 Chinese invention patent disclose a kind of insulated end cover for motor and generator, by the rolling bearing being connected to motor or generator shaft, bearing inner end cap, bearing keep off outward, bearing outer end cap and be fixed on electric machine stand bearing pedestal composition, by the radial direction at housing washer with axially arranging insulating case and bearing outer end cap and bearing keeps off the technical scheme that adaptation is combined into labyrinth seal outward, overcome the deficiency that insulating rolling bearing exists.But this insulated end cover can only be used for non-fire-proof motor, be applicable to B3 and install, as also needed to change a little for vertical installation.
Utility model content
The purpose of this utility model is the above problem overcoming prior art existence, provides a kind of insulated end cover for flame-proof converter asynchronous motor, is applicable to flame-proof converter asynchronous motor, and can adapt to the multiple mounting structure pattern of motor, economical and practical.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of insulated end cover for flame-proof converter asynchronous motor, comprise the bearing being connected to motor main shaft, the end cap be located at the internal bearing cover of bearing both sides and bearing end cover and be located at above bearing, one end of described bearing is stuck end, very close to each other between the seam end face of its side and internal bearing cover and bearing end cover, the other end is the non-stuck end leaving gap, the stuck end of described bearing is provided with insulating washer, be positioned at the end cap above described bearing and be set with the material capability insulating case close with it along the radial direction of outer ring and axis, the mating surface of described end cap and insulating case is the conical surface, the both sides being positioned at described mating surface are provided with at least one for fixing sunk screw.
Further, described insulating washer is preferably the epoxy resin bonded fiber of 0.5mm ~ 1.0mm, has high machinery and dielectric property, preferably thermal endurance and moisture resistivity.
Further, the quantity of described sunk screw is totally 6, both sides, when processing bearing with end cover room both ends of the surface, is as the criterion can not be worked into sunk screw.
The beneficial effects of the utility model are:
The utility model overcomes high, the price of bearing mnanufacture cost and the flimsy defect of surface of insulating layer that existing insulation bearing exists, and is applicable to flame-proof converter asynchronous motor, and can adapts to the multiple mounting structure pattern of motor, economical and practical.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of embodiment of the present utility model;
Number in the figure illustrates: 1-end cap, 2-bearing end cover, 3-insulating case, 4-insulating washer, 5-bearing, 6-internal bearing cover, 7-mating surface.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
As shown in Figure 1, a kind of insulated end cover for flame-proof converter asynchronous motor, comprise the bearing 5 being connected to motor main shaft, the end cap 1 be located at the internal bearing cover 6 of bearing 5 both sides and bearing end cover 2 and be located at above bearing 5, one end of described bearing 5 is stuck end, very close to each other between the seam end face of its side and internal bearing cover 6 and bearing end cover 2, the other end is the non-stuck end leaving gap, the stuck end of described bearing 5 is provided with insulating washer 4, insulating washer 4 is preferably the epoxy resin bonded fiber of 0.8mm, be positioned at the end cap 1 above described bearing 5 and be set with the material capability insulating case close with it 3 along the radial direction of outer ring and axis, described end cap 1 is the conical surface with the mating surface 7 of insulating case 3, the both sides being positioned at described mating surface 7 are respectively fixed with 3 for fixing sunk screw, when processing end cap 1 bearing chamber both ends of the surface, be as the criterion so that sunk screw can not be worked into.
The bright operation principle of the present embodiment, installation and the course of work are:
The material that the insulating case 3 of the utility model insulated end cover selects material capability close with end cap 1, inside and outside surface reaches designing requirement through accurate machine work, again insulating case 3 is set on end cap 1, at the stuck end installing insulating packing ring 4 of bearing 5, the epoxy resin bonded fiber of 0.8mm selected by insulating washer 4, has high machinery and dielectric property, preferably thermal endurance and moisture resistivity; Last with reference to accompanying drawing; each assembling parts is become parts; be connected on motor main shaft with bearing 5 inner ring of insulated end cover; when motor and generator operation; be arranged on the insulating case 3 that end cap 1 outer ring is radial and axial; block the path of shaft current of axle → bearing → end cap → support, play the effect of galvanic corrosion phenomenon and the available protecting bearing 5 preventing bearing 5 from may occur.In addition, the utility model is applicable to the motor of rolling bearing structure, by realizing at bearing shell underlay insulating trip the motor being applicable to sliding bearing structure.
The utility model adapts to the multiple mounting structure pattern of motor, and especially for the selection that flame-proof converter asynchronous motor is best, economic use, reduces costs.
Claims (3)
1. the insulated end cover for flame-proof converter asynchronous motor, comprise the bearing (5) being connected to motor main shaft, be located at the internal bearing cover (6) of bearing (5) both sides and bearing end cover (2) and be located at the end cap (1) of bearing (5) top, one end of described bearing (5) is stuck end, very close to each other between the seam end face of its side and internal bearing cover (6) and bearing end cover (2), the other end is the non-stuck end leaving gap, it is characterized in that: the stuck end of described bearing (5) is provided with insulating washer (4), be positioned at the end cap (1) above described bearing (5) and be set with the material capability insulating case close with it (3) along the radial direction of outer ring and axis, described end cap (1) is the conical surface with the mating surface (7) of insulating case (3), the both sides being positioned at described mating surface (7) are provided with at least one for fixing sunk screw.
2. a kind of insulated end cover for flame-proof converter asynchronous motor according to claim 1, is characterized in that: described insulating washer (4) is preferably the epoxy resin bonded fiber of 0.5mm ~ 1.0mm.
3. a kind of insulated end cover for flame-proof converter asynchronous motor according to claim 1, is characterized in that: the quantity of described sunk screw is totally 6, both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292089.3U CN204578321U (en) | 2015-05-08 | 2015-05-08 | For the insulated end cover of flame-proof converter asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292089.3U CN204578321U (en) | 2015-05-08 | 2015-05-08 | For the insulated end cover of flame-proof converter asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204578321U true CN204578321U (en) | 2015-08-19 |
Family
ID=53870912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520292089.3U Expired - Fee Related CN204578321U (en) | 2015-05-08 | 2015-05-08 | For the insulated end cover of flame-proof converter asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204578321U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359723A (en) * | 2017-07-26 | 2017-11-17 | 卧龙电气集团股份有限公司 | The bearing insulation assembling structure and its manufacture method of insulating barrier are set in a kind of bearing holder (housing, cover) |
| CN107425651A (en) * | 2017-07-26 | 2017-12-01 | 卧龙电气集团股份有限公司 | Make the novel bearing insulation system and its manufacture method of insulating barrier using BMC |
-
2015
- 2015-05-08 CN CN201520292089.3U patent/CN204578321U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359723A (en) * | 2017-07-26 | 2017-11-17 | 卧龙电气集团股份有限公司 | The bearing insulation assembling structure and its manufacture method of insulating barrier are set in a kind of bearing holder (housing, cover) |
| CN107425651A (en) * | 2017-07-26 | 2017-12-01 | 卧龙电气集团股份有限公司 | Make the novel bearing insulation system and its manufacture method of insulating barrier using BMC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160508 |