CN207010423U - Variable-frequency motor disappears shaft current device - Google Patents
Variable-frequency motor disappears shaft current device Download PDFInfo
- Publication number
- CN207010423U CN207010423U CN201720952537.7U CN201720952537U CN207010423U CN 207010423 U CN207010423 U CN 207010423U CN 201720952537 U CN201720952537 U CN 201720952537U CN 207010423 U CN207010423 U CN 207010423U
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- body flange
- bearing
- right body
- left body
- flange
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Abstract
The utility model provides a kind of variable-frequency motor and disappeared shaft current device, belongs to technical field of motors.It solves the problems such as existing shaft current installation cost that disappears is high and inconvenient for use.The utility model includes rotor, bearing and end cap, end cap includes body and is arranged on the left body flange of body on both sides of the middle and right body flange, on body bearing chamber is provided between left body flange and right body flange, left body flange, right body flange penetrates with bearing chamber, bearing is located in bearing chamber, bearing, the axis of left body flange and right body flange is on the same line, a circle abrasion-proof insulating coating is provided with the rotating shaft of rotor, the axle stretch end of rotating shaft sequentially passes through left body flange, bearing and right body flange simultaneously stretch out at right body flange, abrasion-proof insulating coating is located at left body flange, between bearing and right body flange and the length of abrasion-proof insulating coating is more than left body flange outer face the distance between to right body flange outer face.The utility model is simple in construction, and cost is low, durable.
Description
Technical field
The utility model belongs to technical field of motors, and more particularly to a kind of variable-frequency motor disappears shaft current device.
Background technology
In existing variable-frequency motor operation process, because harmonics of inverter content is high, easily cause rotor magnetic circuit asymmetric, magnetic field
Axle stretch end and non-shaft stretching end is caused to form voltage difference when countershaft is cut, and rotating shaft, end cap, bearing internal external lid, bearing
It is conductive material, formation loop, generation shaft current, and the presence of shaft current, then the bearing of motor can be caused to damage.It is existing
Two kinds elimination shaft current motors, it is a kind of be motor two bearings at least one be insulation, it can prevent shaft current
Infringement to bearing；Another kind is that carbon brush is provided with motor, shaft current dredged away by carbon brush and protect bearing not by
Infringement.Existing deficiency is that cost of manufacture is high in use for the former, can reduce the competitiveness of product；The latter exists in use
Deficiency be that carbon brush can drop carbon dust in use, motor operating is impacted.
Utility model content
The purpose of this utility model is for the disadvantages mentioned above present in existing motor, and provides that a kind of cost is low, insulation
The good and durable shaft current device that disappears of effect.
The purpose of this utility model can be realized by following technical proposal：
Variable-frequency motor disappears shaft current device, it is characterised in that it includes rotor, bearing and end cap, end cap include body and
The left body flange of body on both sides of the middle and right body flange are arranged on, is provided with body between left body flange and right body flange
Bearing chamber, left body flange, right body flange and bearing chamber penetrate, and bearing is located in bearing chamber, bearing, left body flange and right body flange
Axis on the same line, a circle abrasion-proof insulating coating is provided with the rotating shaft of described rotor, the axle stretch end of rotating shaft is successively
Stretch out through left body flange, bearing and right body flange and at right body flange, described abrasion-proof insulating coating be located at left body flange,
Between bearing and right body flange and abrasion-proof insulating coating length be more than left body flange outer face between right body flange outer face
Distance.
In above-mentioned variable-frequency motor disappears shaft current device, the inwall of described left body flange and right body flange is axially
Direction is provided with some circle convex tendons.Abrasion-proof insulating coating and left body flange and the contact surface of right body flange can be reduced by so setting
Product, so as to which the frictional force of abrasion-proof insulating coating and left body flange and right body flange can be reduced when rotating shaft rotation.
In above-mentioned variable-frequency motor disappears shaft current device, described abrasion-proof insulating coating is ceramic coating.
In above-mentioned variable-frequency motor disappears shaft current device, the thickness of described ceramic coating is 0.6mm.
Compared with prior art, the utility model plates insulative ceramic coatings in the rotating shaft of rotor, with this come separate end cap,
The contact of bearing internal external lid, bearing with rotating shaft, current loop is cut off, the generation of shaft current can be eliminated so that rotating shaft can be only formed
Voltage and electric current can not be produced, avoid damage bearing.The utility model is simple in construction, and cost is low, durable.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
In figure, 1, rotating shaft；2nd, bearing；3rd, end cap；4th, body；5th, left body flange；6th, right body flange；7th, bearing chamber；8th, make pottery
Porcelain coating；9th, convex tendon.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
The shaft current device as shown in figure 1, a kind of variable-frequency motor provided by the utility model disappears, it include rotor, bearing 2 and
End cap 3.End cap 3 includes body 4 and is arranged on the left body flange 5 and right body flange 6 of the on both sides of the middle of body 4.Positioned at a left side on body 4
Bearing chamber 7 is provided between body flange 5 and right body flange 6, left body flange 5, right body flange 6 and the Room of bearing 2 penetrate.2, bearing
In in bearing chamber 7, the axis of bearing 2, left body flange 5 and right body flange 6 is on the same line.It is provided with the rotating shaft 1 of rotor
One circle abrasion-proof insulating coating, abrasion-proof insulating coating of the present utility model is ceramic coating 8.
The axle stretch end of rotating shaft 1 sequentially passes through left body flange 5, bearing 2 and right body flange 6 and stretched out at right body flange 6, on
The ceramic coating 8 stated is between left body flange 5, bearing 2 and right body flange 6 and the length of ceramic coating 8 is more than left body flange 5
Outer face is the distance between to the right outer face of body flange 6.The thickness of ceramic coating 8 is 0.6mm.
The inwall of left body flange 5 and right body flange 6 is axially provided with some circle convex tendons 9.So setting can be with
Reduce the contact area of ceramic coating 8 and left body flange 5 and right body flange 6, can reduce ceramics when rotation so as to rotating shaft 1
The friction of coating 8 and left body flange 5 and right body flange 6.Make the ceramic coating 8 in rotating shaft 1 more durable in use.
The utility model separates end cap 3, bearing by using insulative ceramic coatings 8 are plated in the rotating shaft 1 of rotor, with this
2 exterior and interior covers, the contact with rotating shaft 1 of bearing 2, current loop is cut off, the generation of shaft current is completely eliminated so that rotating shaft 1 can only shape
Electric current can not be produced into voltage.
It should be understood that in claims of the present utility model, specification, all " including ... " should be understood as out
The implication of formula is put, that is, its implication is equal to " at least containing ... ", and should not be construed as enclosed implication, be i.e. its implication
It should not be construed " only including ... ".
The utility model person of ordinary skill in the field can do various to described specific embodiment
Modification or supplement are substituted using similar mode, but without departing from spirit of the present utility model or surmount appended right will
Seek scope defined in book.
Claims (4)
- The shaft current device 1. variable-frequency motor disappears, it is characterised in that it includes rotor, bearing and end cap, and end cap includes body and set The left body flange of portion both sides and right body flange in the body are put, axle is provided between left body flange and right body flange on body Hold room, left body flange, right body flange and bearing chamber penetrate, and bearing is located in bearing chamber, bearing, left body flange and right body flange Axis on the same line, is provided with a circle abrasion-proof insulating coating in the rotating shaft of described rotor, the axle stretch end of rotating shaft is worn successively Cross left body flange, bearing and right body flange and stretched out at right body flange, described abrasion-proof insulating coating is located at left body flange, axle Hold and right body flange between and abrasion-proof insulating coating length be more than left body flange outer face between right body flange outer face Distance.
- The shaft current device 2. variable-frequency motor according to claim 1 disappears, it is characterised in that described left body flange and the right side are convex The inwall of edge body is axially provided with some circle convex tendons.
- The shaft current device 3. variable-frequency motor according to claim 1 disappears, it is characterised in that described abrasion-proof insulating coating is Ceramic coating.
- The shaft current device 4. variable-frequency motor according to claim 3 disappears, it is characterised in that the thickness of described ceramic coating For 0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952537.7U CN207010423U (en) | 2017-08-01 | 2017-08-01 | Variable-frequency motor disappears shaft current device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952537.7U CN207010423U (en) | 2017-08-01 | 2017-08-01 | Variable-frequency motor disappears shaft current device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207010423U true CN207010423U (en) | 2018-02-13 |
Family
ID=61457392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720952537.7U Expired - Fee Related CN207010423U (en) | 2017-08-01 | 2017-08-01 | Variable-frequency motor disappears shaft current device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207010423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649751A (en) * | 2018-07-11 | 2018-10-12 | 珠海格力电器股份有限公司 | Axle construction and motor with it |
-
2017
- 2017-08-01 CN CN201720952537.7U patent/CN207010423U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649751A (en) * | 2018-07-11 | 2018-10-12 | 珠海格力电器股份有限公司 | Axle construction and motor with it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 Termination date: 20210801 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |