CN209030027U - It can prevent the motor sliding bearing of oil leak - Google Patents
It can prevent the motor sliding bearing of oil leak Download PDFInfo
- Publication number
- CN209030027U CN209030027U CN201821614443.XU CN201821614443U CN209030027U CN 209030027 U CN209030027 U CN 209030027U CN 201821614443 U CN201821614443 U CN 201821614443U CN 209030027 U CN209030027 U CN 209030027U
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- Prior art keywords
- sealing ring
- negative pressure
- annular
- plain bearing
- oil leakage
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- Sealing Of Bearings (AREA)
Abstract
The utility model discloses the motor sliding bearings that one kind can prevent oil leak, solve the problems, such as that lubricating oil is easily accessible in electric machine casing in sliding bearing.Anti- oil leakage sealing ring (8) is socketed on machine shaft (6) on the inside of plain bearing housing (2), the inner side end of the outboard end and plain bearing housing (2) of anti-oil leakage sealing ring (8) is fixed together, annular transitional gas chamber (12) and annular negative pressure chamber (11) are respectively arranged in anti-oil leakage sealing ring (8), annular negative pressure chamber (11) is connected together by negative pressure stomata (13) and the inner cavity of electric machine casing (1), transition seal ring (9) are provided between annular negative pressure chamber (11) and annular transitional gas chamber (12), negative-pressure balancing sealing ring (10) are provided on the inner end of anti-oil leakage sealing ring (8) on the inside of annular negative pressure chamber (11).Protect the insulation performance of each component in motor.
Description
Technical field
The utility model relates to a kind of sliding bearing, in particular to sliding bearing used in a kind of motor.
Background technique
Sliding bearing is selected sometimes when designing electric machine structure according to motor use environment, is used to support rotor, is guaranteed
The normal operation of rotor；Sliding bearing is mainly made of bearing block and bearing shell, the axis of bearing shell and rotor in sliding bearing
Floating fit is held, oil film is formed between bearing shell and rotor shaft end, for overcoming rubbing between rotor shaft end and bearing shell
Wipe power.It is filled with lubricating oil in the lower part of the closed inner cavity of sliding bearing, is gas chamber on the top of the closed inner cavity of sliding bearing,
It is provided with respirator on the gas chamber, the gas chamber on top is made to be connected with atmosphere, the indoor air pressure of gas is an atmospheric pressure.Sliding
The inner end of bearing is generally located on the inside of electric machine casing, due to being provided with cooling air duct in electric machine casing, works as motor operation
When, the circulated air in cooling air duct can make to generate negative pressure in electric machine casing, and the air pressure in sliding bearing inner cavity is an atmosphere
Pressure, and in electric machine casing it is negative pressure, just make the both ends air pressure of sliding bearing inner seal circle uneven, under the action of negative pressure,
It is easy to make the lubricating oil in sliding bearing to enter in electric machine casing by the inner seal circle, causes many zero inside motor
Component is made to be easy to adsorb dirty, dust in inner components, reduces the insulation performance of components, be easy by lubricant pollution
Lead to hidden danger of quality.
Summary of the invention
The utility model provides a kind of motor sliding bearing that can prevent oil leak, solves profit in sliding bearing
Lubricating oil is easily accessible the technical problem in electric machine casing.
The utility model is to solve the above technical problem by the following technical programs:
A kind of motor sliding bearing preventing oil leak, including electric machine casing and machine shaft, in electric machine casing
It is provided with plain bearing housing between machine shaft, plain bearing bush is provided in plain bearing housing, in sliding bearing axis
It is provided with machine shaft in watt, sliding bearing gas chamber is provided in the plain bearing housing of plain bearing bush two sides, is sliding
Respirator is provided on bearing block, sliding bearing gas chamber is communicated with the atmosphere together by respirator, in plain bearing housing
It is provided with sliding bearing inner seal circle between side and machine shaft, is socketed on the machine shaft on the inside of plain bearing housing
Anti- oil leakage sealing ring, the outboard end of anti-oil leakage sealing ring and the inner side end of plain bearing housing are fixedly connected on
Together, annular transitional gas chamber and annular negative pressure chamber, annular negative pressure chamber are respectively arranged in anti-oil leakage sealing ring
It is connected together by the inner cavity of negative pressure stomata and electric machine casing, is provided between annular negative pressure chamber and annular transitional gas chamber
Transition seal ring is provided with negative-pressure balancing sealing on the inner end of the anti-oil leakage sealing ring on the inside of annular negative pressure chamber
Circle.
Four excessive seal rings are provided between annular negative pressure chamber and annular transitional gas chamber, in annular negative pressure chamber
Twice negative-pressure balancing sealing ring is provided on the inner end of the anti-oil leakage sealing ring of side.
The utility model by increasing sealing ring on the inside of sliding bearing, and be respectively set in sealing ring transition gas chamber and
Negative pressure chamber has blocked the leakage into motor of lubricating oil in sliding bearing, has protected the insulation performance of each component in motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the sealing fiting relation figure between the sliding bearing of the utility model and machine shaft.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing:
A kind of motor sliding bearing preventing oil leak, including electric machine casing 1 and machine shaft 6, in motor casing
It is provided with plain bearing housing 2 between body 1 and machine shaft 6, plain bearing bush 3 is provided in plain bearing housing 2, is sliding
It is provided with machine shaft 6 in bearing bush 3, is provided with sliding bearing gas in the plain bearing housing 2 of 3 two sides of plain bearing bush
Room 4, is provided with respirator 5 on plain bearing housing 2, sliding bearing gas chamber 4 by respirator 5 be communicated with the atmosphere together,
It is provided with sliding bearing inner seal circle 7 between the inner end and machine shaft 6 of plain bearing housing 2, in 2 inside of plain bearing housing
Machine shaft 6 on be socketed with anti-oil leakage sealing ring 8, the outboard end and sliding bearing of anti-oil leakage sealing ring 8
The inner side end of seat 2 is fixed together, and 12 He of annular transitional gas chamber is respectively arranged in anti-oil leakage sealing ring 8
Annular negative pressure chamber 11, annular negative pressure chamber 11 is connected together by negative pressure stomata 13 and the inner cavity of electric machine casing 1, in annular
Transition seal ring 9 is provided between negative pressure chamber 11 and annular transitional gas chamber 12, the anti-lubrication in annular 11 inside of negative pressure chamber
Negative-pressure balancing sealing ring 10 is provided on the inner end of oil leakage sealing ring 8.
Four transition seal rings 9 are provided between annular negative pressure chamber 11 and annular transitional gas chamber 12, in annular negative pressure
Twice negative-pressure balancing sealing ring 10 is provided on the inner end of the anti-oil leakage sealing ring 8 of 11 inside of gas chamber；Due to sliding
There is also pressure difference between bearing gas chamber 4 and annular transitional gas chamber 12, lubricating oil can also be penetrated into annular transitional gas chamber 12, but
Annular negative pressure chamber 11 is connected to in electric machine casing by negative pressure stomata 13, and making 10 both ends of negative-pressure balancing sealing ring is negative pressure,
Lubricating oil is overcome since there are the oil leakages caused by pressure difference at sealing ring both ends.
Claims (2)
1. one kind can prevent the motor sliding bearing of oil leak, including electric machine casing (1) and machine shaft (6), in motor
It is provided with plain bearing housing (2) between shell (1) and machine shaft (6), is provided with sliding bearing axis in plain bearing housing (2)
Watt (3), are provided with machine shaft (6), the plain bearing housing in plain bearing bush (3) two sides in plain bearing bush (3)
(2) it is provided with sliding bearing gas chamber (4) in, is provided on plain bearing housing (2) respirator (5), sliding bearing gas chamber (4) is logical
It crosses respirator (5) to be communicated with the atmosphere together, is provided with cunning between the inner end and machine shaft (6) of plain bearing housing (2)
Dynamic bearing inner seal circle (7), which is characterized in that be socketed with anti-lubrication on the machine shaft (6) on the inside of plain bearing housing (2)
Oil leakage sealing ring (8), the outboard end of anti-oil leakage sealing ring (8) and the fixed company of the inner side end of plain bearing housing (2)
It is connected together, annular transitional gas chamber (12) and annular negative pressure chamber is respectively arranged in anti-oil leakage sealing ring (8)
(11), annular negative pressure chamber (11) is connected together by negative pressure stomata (13) and the inner cavity of electric machine casing (1), in annular negative pressure
Transition seal ring (9) are provided between gas chamber (11) and annular transitional gas chamber (12), it is anti-on the inside of annular negative pressure chamber (11)
Negative-pressure balancing sealing ring (10) are provided on the inner end of oil leakage sealing ring (8).
2. the motor sliding bearing that one kind according to claim 1 can prevent oil leak, which is characterized in that in annular
Four transition seal rings (9) are provided between negative pressure chamber (11) and annular transitional gas chamber (12), in annular negative pressure chamber (11)
Twice negative-pressure balancing sealing ring (10) is provided on the inner end of the anti-oil leakage sealing ring (8) of inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614443.XU CN209030027U (en) | 2018-09-30 | 2018-09-30 | It can prevent the motor sliding bearing of oil leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614443.XU CN209030027U (en) | 2018-09-30 | 2018-09-30 | It can prevent the motor sliding bearing of oil leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209030027U true CN209030027U (en) | 2019-06-25 |
Family
ID=66905488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821614443.XU Active CN209030027U (en) | 2018-09-30 | 2018-09-30 | It can prevent the motor sliding bearing of oil leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209030027U (en) |
-
2018
- 2018-09-30 CN CN201821614443.XU patent/CN209030027U/en active Active
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