CN202833781U - Hydraulic brake seal structure of speed reducer and travel speed reducer comprising the same - Google Patents
Hydraulic brake seal structure of speed reducer and travel speed reducer comprising the same Download PDFInfo
- Publication number
- CN202833781U CN202833781U CN 201220407760 CN201220407760U CN202833781U CN 202833781 U CN202833781 U CN 202833781U CN 201220407760 CN201220407760 CN 201220407760 CN 201220407760 U CN201220407760 U CN 201220407760U CN 202833781 U CN202833781 U CN 202833781U
- Authority
- CN
- China
- Prior art keywords
- speed reducer
- sealing
- groove
- braking
- brake
- 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
Links
Images
Abstract
The utility model discloses a hydraulic brake seal structure of a speed reducer and a travel speed reducer comprises the same. The hydraulic brake seal structure of the speed reducer and the travel speed reducer in the technical field of piston sealing. The sealing structure comprises a brake piston and a brake cavity body, wherein the brake piston is provided with a groove I,the brake cavity body is provided with a groove II, the groove I and the groove II are all provided with retainer rings and plum blossom shape seals, the retainer rings and the plum blossom shape seals are contacted with each other. By utilizing the structural style of combining the retainer rings and the plum blossom shape seals to seal the piston, the hydraulic brake seal structure of the speed reducer and the travel speed reducer comprising the hydraulic brake seal structure has the advantages of being good in hydraulic brake seal performance, safe and reliable in sealing, so that the reliability of the speed reducer brake is high.
Description
Technical field
The utility model relates to the piston seal technical field, particularly a kind of speed reducer hydraulic braking sealing configuration and comprise the driving speed reducer of this structure.
Background technique
The driving speed reducer assembly is the important component part of hydraulic shovel, mainly is comprised of oil hydraulic motor, speed reducer and braking device.Braking device is installed in the speed reducer, and it mainly adopts hydraulic braking.Along with the development of excavator technology, the braking ability of driving speed reducer and the requirement of braking reliability are improved constantly.And the sealability of speed reducer piston directly affects braking ability and braking reliability.Present piston seal adopts common ring structure form mostly, bears pressure about 20Mpa.But this piston sealing structure is so that the fragile and leakage of oil of brake chamber sealing causes reductor braking to lose efficacy, and reliability is not high.
The model utility content
For the piston seal that solves hydraulic braking adopts the conventional seals coil structures brake chamber sealing is damaged and leakage of oil easily, and then cause reductor braking to lose efficacy and the not high problem of reliability, a kind of speed reducer hydraulic braking sealing configuration now is provided and has comprised the driving speed reducer of this structure.Concrete technological scheme is as follows:
A kind of speed reducer hydraulic braking sealing configuration, described sealing configuration comprises brake piston and braking cavity, wherein, have groove one on the described brake piston, have groove two on the described braking cavity, the sealing of back-up ring and blossom type all is installed in described groove one and the described groove two, and described back-up ring and the sealing of described blossom type contact.
Preferably, described back-up ring is monolateral loose rib.
Preferably, described blossom type sealing is the sealing of adopting fluorine rubber, silicone rubber or hydrorubber material to make.
Preferably, described blossom type sealing is provided with cavity.
Preferably, described cavity is positioned at the surface of contact of the sealing of described blossom type and described brake piston, described braking cavity.
A kind of driving speed reducer, described driving speed reducer are equipped with above-mentioned each described speed reducer hydraulic braking sealing configuration.
Compared with prior art, speed reducer hydraulic braking sealing configuration in the technique scheme and comprise that the driving speed reducer of this structure has the following advantages: carry out piston seal by adopting the combined structural type of back-up ring and blossom type sealing, so that hydraulic braking good seal performance, sealingly secure, reliable, and then the reductor braking reliability is high.
Description of drawings
In order to be illustrated more clearly in the technological scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the speed reducer hydraulic braking sealed structural representation that provides among the utility model embodiment.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model mode of execution is described in further detail.
As shown in Figure 1, the utility model embodiment provides a kind of speed reducer hydraulic braking sealing configuration, the sealing structure comprises brake piston 1 and braking cavity 4, have groove 1 at brake piston 1, have groove 27 at braking cavity 4, back-up ring 2 and blossom type sealing 3 all is installed in groove 1 and the groove 27, and back-up ring 2 and blossom type sealing 3 contact.Wherein, back-up ring 2 is monolateral loose rib.Blossom type sealing 3 is sealings of adopting fluorine rubber, silicone rubber or hydrorubber material to make.Be provided with cavity 5 in blossom type sealing 3.This cavity 5 is positioned at blossom type sealing 3 and brake piston 1, brakes the surface of contact of cavity 4.
Driving speed reducer is when starting, and shown in the direction of arrow as shown in Figure 1, brake oil arrives reductor braking chamber 4 by the motor reduction valve, and under the pressure-acting of brake chamber, brake piston 1 is moved to the left, and compacting brake spring 8 is realized brake off.
In the process of brake piston 1 brake off and braking, piston sealing structure is mobile with brake piston 1, in moving process, when blossom type sealing 3 is subject to axial force, blossom type sealing 3 is to the axial direction distortion, and decrement increases, and more high sealing performance is better for pressure at this moment; Simultaneously under the effect of loose rib 2, blossom type sealing 3 has not only guaranteed required decrement, and its cavity 5 makes brake piston 1 surface that certain fluid lubricate is arranged in moving process, seals safer, more reliable.
Through experiment test, the sealing structure can improve working pressure to 22.5MPa, uses operating temperature can reach-30
0C-120
0C can satisfy the various operating modes of all kinds of engineering machinery fully.
The utility model embodiment also discloses a kind of driving speed reducer, and this driving speed reducer is equipped with above-mentioned speed reducer hydraulic braking sealing configuration.The other parts of speed reducer can be with reference to prior art, does not do at this and gives unnecessary details.
The utility model embodiment not only be easy to assembling, and sealability is better by adopting the combined sealing structure form of monolateral loose rib and blossom type sealing, seal safelyr, reliable, so the braking ability of speed reducer is good, braking reliability height.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. speed reducer hydraulic braking sealing configuration, comprise brake piston (1) and braking cavity (4), it is characterized in that, have groove one (6) on the described brake piston (1), have groove two (7) on the described braking cavity (4), back-up ring (2) and blossom type sealing (3) all is installed in described groove one (6) and the described groove two (7), and described back-up ring (2) and described blossom type sealing (3) contact.
2. speed reducer hydraulic braking sealing configuration according to claim 1 is characterized in that, described back-up ring (2) is monolateral loose rib.
3. speed reducer hydraulic braking sealing configuration according to claim 1 is characterized in that, described blossom type sealing (3) is the sealing of adopting fluorine rubber, silicone rubber or hydrorubber material to make.
4. speed reducer hydraulic braking sealing configuration according to claim 1 is characterized in that, described blossom type sealing (3) is provided with cavity (5).
5. speed reducer hydraulic braking sealing configuration according to claim 4 is characterized in that, described cavity (5) is positioned at the surface of contact of described blossom type sealing (3) and described brake piston (1), described braking cavity (4).
6. a driving speed reducer is characterized in that, described driving speed reducer is equipped with each described speed reducer hydraulic braking sealing configuration of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407760 CN202833781U (en) | 2012-08-17 | 2012-08-17 | Hydraulic brake seal structure of speed reducer and travel speed reducer comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407760 CN202833781U (en) | 2012-08-17 | 2012-08-17 | Hydraulic brake seal structure of speed reducer and travel speed reducer comprising the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833781U true CN202833781U (en) | 2013-03-27 |
Family
ID=47945493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407760 Expired - Fee Related CN202833781U (en) | 2012-08-17 | 2012-08-17 | Hydraulic brake seal structure of speed reducer and travel speed reducer comprising the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595385A (en) * | 2015-01-15 | 2015-05-06 | 三一汽车起重机械有限公司 | Braking mechanism and speed reducer |
-
2012
- 2012-08-17 CN CN 201220407760 patent/CN202833781U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595385A (en) * | 2015-01-15 | 2015-05-06 | 三一汽车起重机械有限公司 | Braking mechanism and speed reducer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204201078U (en) | A kind of y-type seal ring | |
| CN203857047U (en) | Seal structure for piston rod of oil cylinder | |
| CN203098693U (en) | Hydraulic brake wheel cylinder | |
| CN202833781U (en) | Hydraulic brake seal structure of speed reducer and travel speed reducer comprising the same | |
| CN202579754U (en) | Integral hydraulic brake calipers with three pairs of cylinders | |
| CN201265650Y (en) | Spring composite sealing ring | |
| CN203926215U (en) | A kind of oil hydraulic cylinder | |
| CN103968079B (en) | A kind of reciprocating dynamic seal | |
| CN104132131A (en) | Novel hydraulic cylinder silicon rubber sealing ring structure | |
| CN202937704U (en) | Sealing piece of brake of tractor | |
| CN202202979U (en) | Sealing structure of process hole of camshaft hole of automobile engine | |
| CN203548915U (en) | Sealing device for hydraulic retarder | |
| CN103851193B (en) | A kind of plugging structure of engine technology hole | |
| CN203161956U (en) | Sealing structure for reducing damping of piston of two-way jar accelerator | |
| CN202132495U (en) | Wet type brake device with step seal structure | |
| CN201963926U (en) | Novel steel ball plug valve | |
| CN202149221U (en) | Axial oil seal | |
| CN206816714U (en) | A kind of structure for being used to lift braking clamp piston return amount | |
| CN203892298U (en) | Multi-seal oil cylinder | |
| CN202545652U (en) | Anti-scratching clutch booster | |
| CN203604508U (en) | Floating type brake pincers | |
| CN205036895U (en) | Movable seals up piston valve member | |
| CN103363119B (en) | A kind of hydrodynamic retarder seal arrangement | |
| CN205260293U (en) | Improve sealed assembly structure's axial plunger pump | |
| CN201982550U (en) | Dual-sealing hydraulic rear wheel cylinder |
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 |
Granted publication date: 20130327 Termination date: 20150817 |
|
| EXPY | Termination of patent right or utility model |