CN201866250U - Combined oil seal - Google Patents
Combined oil seal Download PDFInfo
- Publication number
- CN201866250U CN201866250U CN2010205214305U CN201020521430U CN201866250U CN 201866250 U CN201866250 U CN 201866250U CN 2010205214305 U CN2010205214305 U CN 2010205214305U CN 201020521430 U CN201020521430 U CN 201020521430U CN 201866250 U CN201866250 U CN 201866250U
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- CN
- China
- Prior art keywords
- oil
- lip
- oil seal
- seal
- oil sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a combined oil seal for engineering machinery gearboxes, which comprises an oil seal seat, a main oil seal, a dustproof oil seal and a rotation flange.The main oil seal and the dustproof oil seal are designed to adopt a single-lip structure.The external diameter of two oil seals and the oil seal seat are in an interference fit.The lip of the two oil seals are pressed and sealed on the rotation flange.The lip of the dustproof oil seal is oriented toward the air-side and the lip of the main oil seal is oriented toward the pressure oil side to form a mounting structure of back-to-back.The main oil seal made of fluorine rubber improves the applicability of the increasing of oil temperature and prolongs the service life of the oil seals.By adopting the above structure, the disadvantages due to the mounting structure of homonymous superposing adopted by conventional double-lip oil seals are completely avoided, such as oil pollution, failure of oil seals and uneasy diffusion of heat.
Description
Technical field
The utility model relates to sealing technique, especially relates to a kind of sealing technique of construction machinery gear box output terminal.
Background technique
At present, the sealing configuration of engineering machinery planetary transmission output terminal is commonly: 1, main oil sealing and anti-dust seal adopt the combine and assemble mode of " stack in the same way "; The inboard lip of lips mouth anti-dust seal is because lack of lubrication causes its generation " dry grinding ", and the lip wearing and tearing are very fast, lose the dust seal functional oil too early; 2, the lip of main oil sealing and anti-dust seal all adopts the lips mouth structure; Because main oil sealing and anti-dust seal adopt " stack in the same way " to assemble and be the lips mouth structure, four lips are very approaching, the space is little between the lip, when rotary flange is in fast state for a long time, fricative heat is difficult for diffusion, cause temperature rise very fast, be easy to generate stress simultaneously and concentrate, reduce the life-span of oil sealing; 3, the material of main oil sealing and anti-dust seal all adopts nitrile rubber, when the oil temperature is higher, and the easily aging distortion of main oil sealing, the seepage probability significantly improves.
Summary of the invention
The purpose of this utility model is: a kind of combination oil seal is provided, solves existing gear box output end sealing configuration leakage of oil, turbidity test are poor, the problem that the oil sealing life-span is short.
The purpose of this utility model is achieved in that by oil sealing base, main oil sealing, anti-dust seal and rotary flange to be formed, main oil sealing and anti-dust seal all are designed to single lip structure, two oil sealing external diameters and oil sealing base interference fit, two oil seal lip crush seals are on rotary flange, and the lip of anti-dust seal is towards air side, the lip of main oil sealing forms the mounting structure of " back-to-back " towards the pressure oil side, has enlarged the space between two lips; The design of two single lip oil sealings " back-to-back " mounting structure, the main oil seal lip of close pressure oil side is because pump oil ability strengthens the good seal lubrication effect of having played, the anti-dust seal lip of close air side has improved dirt exclusion capabilities because the lip position has been played the effect of sealed external dust mud in advance too; The expansion in space between two lips simultaneously, the heat that spin friction produced spreads easily, and main oil sealing material adopts fluorine rubber, has improved the applicability to oily temperature rise, prolongs the oil sealing life-span.
The utility model adopts said structure, has overcome the defective that lubricant oil easily pollutes; Overcome the pollutant alluvial and under oil seal lip, caused cause very much oil seal failure fault of reason such as fast excessive wear of lip.
Description of drawings
Fig. 1 is an assembling schematic representation of the present utility model.
1. oil sealing bases, 2. main oil sealing 3. anti-dust seals 4. rotary flanges among the figure
Embodiment
Embodiment: form by oil sealing base 1, main oil sealing 2, anti-dust seal 3 and rotary flange 4.As shown in Figure 1, being embodied as of assembling: the lip of main oil sealing 2 and anti-dust seal 3 be coated with spread moderate lubrication fat after, at first the lip with anti-dust seal 3 is press fit into the end towards oil sealing base 1 bottom, the lip side pressure outwardly of main oil sealing 2 is gone in the oil sealing base 1 again.When rotary flange 4 continuous high speeds rotate, main oil sealing 2 lips mix the back and are forming continuous, stable oil film between lip and the rotary flange 4 and between two lips from pressure oil side continuous pump oil suction liquid and with lubricating grease, and rely on the surface tension of oil film to stop oil liquid leakage, prevent the wearing and tearing of lip; Simultaneously anti-dust seal 3 lips are installed towards the koniology side, and its lip has very doughtily the outwards ability of pumping dust, and between two lips fully, oil film can be protected the anti-dust seal lip effectively uniformly, improves its lasting dirt exclusion capabilities.The utility model only assemble sequence changes, and implements simply can prevent leakage of oil, and can guarantee the turbidity test of seal space, prolongs the oil sealing life-span.
Claims (2)
1. combination oil seal, form by oil sealing base, main oil sealing, anti-dust seal and rotary flange, main oil sealing and anti-dust seal all are designed to single lip structure, two oil sealing external diameters and oil sealing base interference fit, two oil seal lip crush seals are on rotary flange, and the lip of anti-dust seal is towards air side, and the lip of main oil sealing is characterized in that towards the pressure oil side: main oil sealing and anti-dust seal adopt the combine and assemble mode of " back-to-back ".
2. combination oil seal as claimed in claim 1 is characterized in that described main oil sealing, and material is a fluorine rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205214305U CN201866250U (en) | 2010-09-02 | 2010-09-02 | Combined oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205214305U CN201866250U (en) | 2010-09-02 | 2010-09-02 | Combined oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866250U true CN201866250U (en) | 2011-06-15 |
Family
ID=44137406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205214305U Expired - Fee Related CN201866250U (en) | 2010-09-02 | 2010-09-02 | Combined oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201866250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322168A (en) * | 2012-03-19 | 2013-09-25 | 沃德(天津)传动有限公司 | Speed reducer and sealing device thereof |
| CN106979333A (en) * | 2016-01-18 | 2017-07-25 | 常州兰翔机械有限责任公司 | A kind of turboshaft engine starting motor leather cup |
-
2010
- 2010-09-02 CN CN2010205214305U patent/CN201866250U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322168A (en) * | 2012-03-19 | 2013-09-25 | 沃德(天津)传动有限公司 | Speed reducer and sealing device thereof |
| CN103322168B (en) * | 2012-03-19 | 2016-08-03 | 沃德(天津)传动有限公司 | Reductor and sealing device thereof |
| CN106979333A (en) * | 2016-01-18 | 2017-07-25 | 常州兰翔机械有限责任公司 | A kind of turboshaft engine starting motor leather cup |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XUZHOU XUGONG TRANSMISSION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: TECHNOLOGY BRANCH OF XCMG ENGINEERING MACHINERY CO., LTD. Effective date: 20141231 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141231 Address after: 221004 No. 8, Mount Blue Road, Xuzhou economic and Technological Development Zone, Jiangsu, Xuzhou Patentee after: Xuzhou Xu work transmission Science and Technology Ltd. Address before: 221004 No. 8, Mount Blue Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: Technology Branch of XCMG Engineering Machinery Co., Ltd. |
|
| 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: 20110615 Termination date: 20170902 |