CN202441882U - Sealing structure of planetary reducer - Google Patents
Sealing structure of planetary reducer Download PDFInfo
- Publication number
- CN202441882U CN202441882U CN2012200738021U CN201220073802U CN202441882U CN 202441882 U CN202441882 U CN 202441882U CN 2012200738021 U CN2012200738021 U CN 2012200738021U CN 201220073802 U CN201220073802 U CN 201220073802U CN 202441882 U CN202441882 U CN 202441882U
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- CN
- China
- Prior art keywords
- sealing
- ring
- seal
- piston
- brake casing
- 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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- 238000007789 sealing Methods 0.000 title claims abstract description 31
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 15
- 230000007704 transition Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
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Abstract
The utility model provides a sealing structure of a planetary reducer and belongs to the technical field of machinery. The sealing structure solves the problem in the existing planetary reducer of being poor in sealing effect between a brake casing and a piston. The sealing structure of the planetary reducer is arranged between the brake casing and the piston, a sealing cavity is formed between the brake casing and the piston, a sealing groove is arranged at a combining position of an outer ring of the piston and an inner wall of the brake casing, and a sealing ring is arrange in the sealing groove. The sealing ring is an H-shaped sealing ring, and an arc concave surface is respectively arranged on a radial inner ring and a radial outer ring of the sealing ring, two axial sides of the sealing ring are planes, the section of a sealing ring lip is arc-shaped, arc-shaped transition is arranged between the lip and the arc concave surface, a retainer ring is further arranged in the sealing groove and on two sides of the sealing ring. The sealing structure of the planetary reducer has the advantages of being simple in structure and good in sealing effect.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of planetary speed reducer, the sealing configuration between particularly a kind of planetary speed reducer break and the piston.
Background technique
At present, constructional engineering machinery, handling machinery etc. requires the break ubiquity oil leakage phenomenon of supporting planetary speed reducer, and this is an insoluble always problem, has restricted the development of China's engineering machinery industry to a certain extent.And the main cause that produces leakage of oil is the existing star seal rings of the many employings of break inner carrier sealing, and it under high pressure is out of shape greatly, causes the radial compression amount not enough, causes sealing effect not good, produces the leakage of oil problem.
Summary of the invention
The purpose of the utility model is to have the problems referred to above to existing technology, has proposed a kind of sealing configuration of planetary speed reducer of simple in structure, good sealing effect.
The purpose of the utility model can realize through following technical proposal: a kind of sealing configuration of planetary speed reducer; Be arranged between brake casing and the piston; Be formed with Seal cage between described brake casing and the piston; The junction of described outside piston and brake casing inwall offers seal groove and seal ring is installed in seal groove; It is characterized in that described seal ring is the H RunddichtringO and on the radially Internal and external cycle of seal ring, is equipped with the circular arc concave surface that the axial both sides of described seal ring are that plane and described seal ring lip cross section are circular arc; And between lip and circular arc concave surface, arc transition is arranged, in the described seal groove back-up ring is installed also and described back-up ring is positioned at the seal ring both sides.
In the sealing configuration of above-mentioned planetary speed reducer, described seal groove has two, and a seal groove is opened on the brake casing, and another seal groove is opened on the piston, and above-mentioned Seal cage is between described two seal grooves.
Compared with prior art, the utility model adopts the H RunddichtringO, between sealing lip, forms lubricating cavity; Have the less surface friction drag and the resistance of start, and seal ring is non-circular cross-section, can avoids when to-and-fro motion, producing and roll; Wear resistance is good, improves break sealing effect and overall performance.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of seal ring in the utility model.
Among the figure, 1, brake casing; 2, seal ring; 21, circular arc concave surface; 3, piston; 4, Seal cage; 5, back-up ring; 6, seal groove.
Embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technological scheme of the utility model is done further to describe, but the utility model is not limited to these embodiments.
As depicted in figs. 1 and 2; The sealing configuration of this planet speed reducer is arranged between brake casing 1 and the piston 3, between brake casing 1 and piston 3, is formed with Seal cage 4, and the junction of piston 3 cylindricals and brake casing 1 inwall offers seal groove 6 and seal ring 2 is installed in seal groove 6; Seal groove 6 has two; A seal groove 6 is opened on the brake casing 1, and another seal groove 6 is opened on the piston 3, and Seal cage 4 is between two seal grooves 6.Seal ring 2 is for H RunddichtringO 2 and on the radially Internal and external cycle of seal ring 2, be equipped with circular arc concave surface 21; Seal ring 2 axial both sides are that plane and seal ring 2 lip cross sections are circular arc; And between lip and circular arc concave surface 21, arc transition is arranged, back-up ring 5 and back-up ring 5 also are installed in the seal groove 6 are positioned at seal ring 2 both sides.
Claims (2)
1. the sealing configuration of a planetary speed reducer; Be arranged between brake casing (1) and the piston (3); Be formed with Seal cage (4) between described brake casing (1) and the piston (3); The junction of described piston (3) cylindrical and brake casing (1) inwall offers seal groove (6) and seal ring (2) is installed in seal groove (6); It is characterized in that described seal ring (2) is for H RunddichtringO (2) and on the radially Internal and external cycle of seal ring (2), be equipped with the circular arc concave surface, described seal ring (2) axially both sides is that plane and described seal ring (2) lip cross section are circular arc; And between lip and circular arc concave surface, arc transition is arranged, back-up ring (5) and described back-up ring (5) also are installed in the described seal groove (6) are positioned at seal ring (2) both sides.
2. the sealing configuration of planetary speed reducer according to claim 1; It is characterized in that; Described seal groove (6) has two; A seal groove (6) is opened on the brake casing (1), and another seal groove (6) is opened on the piston (3), and above-mentioned Seal cage (4) is positioned between described two seal grooves (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200738021U CN202441882U (en) | 2012-02-26 | 2012-02-26 | Sealing structure of planetary reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200738021U CN202441882U (en) | 2012-02-26 | 2012-02-26 | Sealing structure of planetary reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441882U true CN202441882U (en) | 2012-09-19 |
Family
ID=46823334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200738021U Expired - Fee Related CN202441882U (en) | 2012-02-26 | 2012-02-26 | Sealing structure of planetary reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889580A (en) * | 2014-10-16 | 2016-08-24 | 河南航天液压气动技术有限公司 | Vertical air-control balance stop valve |
| CN109611535A (en) * | 2018-12-27 | 2019-04-12 | 南京高速齿轮制造有限公司 | High pressure dynamic sealing structure suitable for gear-box |
-
2012
- 2012-02-26 CN CN2012200738021U patent/CN202441882U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889580A (en) * | 2014-10-16 | 2016-08-24 | 河南航天液压气动技术有限公司 | Vertical air-control balance stop valve |
| CN105889580B (en) * | 2014-10-16 | 2018-09-14 | 河南航天液压气动技术有限公司 | A kind of vertical gas control balance stop valve |
| CN109611535A (en) * | 2018-12-27 | 2019-04-12 | 南京高速齿轮制造有限公司 | High pressure dynamic sealing structure suitable for gear-box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20140226 |