CN202937704U - Sealing piece of brake of tractor - Google Patents
Sealing piece of brake of tractor Download PDFInfo
- Publication number
- CN202937704U CN202937704U CN 201220549799 CN201220549799U CN202937704U CN 202937704 U CN202937704 U CN 202937704U CN 201220549799 CN201220549799 CN 201220549799 CN 201220549799 U CN201220549799 U CN 201220549799U CN 202937704 U CN202937704 U CN 202937704U
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- CN
- China
- Prior art keywords
- sealing
- housing
- brake
- sealing piece
- piston
- 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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Abstract
The utility model relates to a sealing piece of a brake of a tractor, which comprises a brake housing, a first sealing piece, a second sealing piece, a third sealing piece, a fourth sealing piece, a piston, an oil passage and a fixing pin, wherein a stepped hole is formed at one end of the brake housing; the first sealing piece and the second sealing piece are respectively positioned in sealing grooves on both a large inner peripheral surface and a small inner peripheral surface of the stepped hole of the housing; one end of the fixing pin is positioned in a blind hole on the inner end surface of the housing; the third sealing piece and the fourth sealing piece are positioned in the upper and the lower sealing grooves of a spring; the piston is positioned in the stepped hole of the housing; the oil passage is positioned at the junction between the inner end surface and the large inner peripheral surface of the stepped hole of the housing; the cross section of each of the sealing pieces is rectangular, which greatly increases the contact area between the sealing pieces and the inner walls of the sealing grooves of the housing, and between the sealing pieces and the outer surface of the piston so as to effectively avoid leakage, and accordingly, the sealing performance of the sealing pieces is improved, the service life of the sealing pieces is prolonged, and the overall braking reliability of the brake is improved to ensure the safety of locomotive in running.
Description
Technical field
The utility model design a kind of brake assembly, particularly a kind of tractor braking device Sealing.
Background technique
Since China reform and opening-up, the national economy rapid growth, " scientific and technical innovation, autonomous innovation " become the main flow of current industrial development, and China's industry is progressively to the future development of intensive style, energy-saving and emission-reduction, low-carbon (LC).The technology of using at present is used for the braking device of most high-effect tractor, this braking device mainly comprises hydraulic controller and break, break is by housing, piston, Sealing, driven disc etc., and some can realize what the mechanism of reciprocating motion of the pistons formed.Existing tractor braking device is a kind ofly to realize that by hydraulic controller driven disc is locked and is unlocked, thereby realizes that locomotive is braked and separated braking.An end at housing is provided with step hole, and piston and respectively has a seal groove just in step hole on the large inner peripheral surface of step hole and little inner peripheral surface, and seal ring is just in seal groove.Adopt O RunddichtringO anti-leak between prior art middle shell and piston.But in use mainly there is the short problem of poor sealing performance, working life of Sealing.Due to the poor sealing performance of Sealing, inwall and the area of contact between outer surface of piston of O RunddichtringO and housing seal groove are less, leakage phenomenon often occurs, therefore greatly reduce the possibility of braking, bring safely hidden danger for locomotive driving.In order to address this problem, research unit and science and technology in enterprise research staff are in continuous research, heuristic process, utilize modern science and technology, existing tractor brake Sealing is carried out improvement and bring new ideas, although obtained technically some progress, still existed the technical barrier that not yet overcomes in practice.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, a kind of New structure seal spare of tractor brake is provided, the Sealing that is rectangle by the cross section increases and the inwall of housing seal groove and the area of contact between outer surface of piston, the generation of Leakage prevention phenomenon, improved the sealability of break, lengthen working life, guarantees the safety in locomotive driving.
the technological scheme that its technical problem that solves the utility model adopts is: contain brake casing, the first Sealing, the second Sealing, the 3rd Sealing, the 4th Sealing, piston, oil duct, fixing pin, an end at brake casing is provided with step hole, the first Sealing and the second Sealing are arranged in the large inner peripheral surface of housing step hole and the seal groove of little inner peripheral surface, fixing pin one end is positioned at the blind hole that the interior edge face of housing is provided with, the 3rd Sealing and the 4th Sealing are positioned at the seal groove of the up and down of spring, piston is positioned at the step hole of housing, step hole interior edge face and large inner peripheral surface intersection at housing are provided with oil duct, seal cross section is rectangle.
The know-why that the utility model adopts is: have short problem of leakage and poor performance, working life for seal ring in break in the past, now be positioned at the large inner peripheral surface of housing step hole and the seal ring of the seal groove on little inner peripheral surface and change the Sealing that the cross section is rectangle into, thereby the area of contact between Sealing and housing seal groove inwall and outer surface of piston increased, effectively prevented the phenomenon of draining, leakage of oil.When high pressure oil axially pressed to Sealing, Sealing meeting radial expansion made Sealing increase the inwall of housing seal groove and the pressure of outer surface of piston, has stoped the generation of leaking.Sealing sprung back after release.
The beneficial effects of the utility model are: the Sealing cross section is rectangle, be positioned at the large inner peripheral surface of housing step hole and the seal groove on little inner peripheral surface, increased the area of contact between Sealing and housing seal groove inwall and outer surface of piston, effective Leakage prevention phenomenon, improved the sealability of Sealing, extend the working life of Sealing, thereby improved the braking reliability of break integral body, guaranteed the safety in locomotive driving.
Description of drawings
The below further describes the utility model with example by reference to the accompanying drawings:
It is tractor brake seal configuration schematic diagram in figure
In the drawings, 1. brake casing, 2-1. the first Sealing, 2-2. the second Sealing, 2-3. the 3rd Sealing, 2-4. the 4th Sealing, 3. piston, 4. oil duct, 5. fixing pin
Embodiment
in the drawings, each component fill according to brake housing 1, be fixed on the rear axle housing body side by bolt-locking, an end at brake casing 1 is provided with step hole, the first Sealing 2-1 and the second Sealing 2-2 are arranged in the large inner peripheral surface of housing 1 step hole and the seal groove of little inner peripheral surface, fixing pin 5 one ends are positioned at the blind hole that the interior edge face of housing 1 is provided with, the 3rd Sealing 2-3 and the 4th Sealing 2-4 are positioned at the seal groove of the up and down of spring, piston 3 is positioned at the step hole of housing 1, step hole interior edge face and large inner peripheral surface intersection at housing 1 are provided with oil duct 4, seal cross section is rectangle.
There is short problem of leakage and poor performance, working life for seal ring in break in the past, now be positioned at the large inner peripheral surface of housing step hole and the seal ring of the seal groove on little inner peripheral surface and change the Sealing that the cross section is rectangle into, thereby the area of contact between Sealing and housing seal groove inwall and outer surface of piston increased, effectively prevented the phenomenon of draining, leakage of oil.When high pressure oil axially pressed to Sealing, Sealing meeting radial expansion made Sealing increase the inwall of housing seal groove and the pressure of outer surface of piston, has stoped the generation of leaking.Sealing sprung back after release.
When high pressure oil constantly enters oil pocket by oil duct 4, piston 3 is moved right, when piston 3 planes firmly were pressed in driven disc on the fixed tray of rear axle housing body side, driven disc was lockable, and transmission shaft can not rotate, and realizes braking.When high pressure oil continuously outflows oil pocket by oil duct 3, piston 3 is moved to the left, driven disc is unlocked, and transmission shaft can rotate, thereby realizes separating braking.
The most O RunddichtringOs that adopt of existing break, it is convenient to install.But the sealability of O RunddichtringO is relatively poor, under the factor effects such as external force working life shorter, need regular replacing.Change the O RunddichtringO into Sealing that the cross section is rectangle, increased the area of contact between Sealing and housing seal groove inwall and outer surface of piston, thereby improved the sealability of Sealing and the braking reliability of break integral body, extended the working life of Sealing.
Claims (1)
1. tractor brake Sealing, contain brake casing, the first Sealing, the second Sealing, the 3rd Sealing, the 4th Sealing, piston, oil duct, fixing pin, it is characterized in that: the end at brake casing is provided with step hole, the first Sealing and the second Sealing are arranged in the large inner peripheral surface of housing step hole and the seal groove of little inner peripheral surface, fixing pin one end is positioned at the blind hole that the interior edge face of housing is provided with, the 3rd Sealing and the 4th Sealing are positioned at the seal groove of the up and down of spring, piston is positioned at the step hole of housing, step hole interior edge face and large inner peripheral surface intersection at housing are provided with oil duct, seal cross section is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549799 CN202937704U (en) | 2012-10-15 | 2012-10-15 | Sealing piece of brake of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549799 CN202937704U (en) | 2012-10-15 | 2012-10-15 | Sealing piece of brake of tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937704U true CN202937704U (en) | 2013-05-15 |
Family
ID=48321943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220549799 Expired - Fee Related CN202937704U (en) | 2012-10-15 | 2012-10-15 | Sealing piece of brake of tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937704U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542024A (en) * | 2013-11-11 | 2014-01-29 | 武汉元丰汽车零部件有限公司 | Sealing structure used for ringlike piston of wet brake |
| CN103644406A (en) * | 2013-12-04 | 2014-03-19 | 鞠小平 | Flange for automobile |
| CN103644221A (en) * | 2013-12-04 | 2014-03-19 | 鞠小平 | Automobile braking mechanism |
-
2012
- 2012-10-15 CN CN 201220549799 patent/CN202937704U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542024A (en) * | 2013-11-11 | 2014-01-29 | 武汉元丰汽车零部件有限公司 | Sealing structure used for ringlike piston of wet brake |
| CN103644406A (en) * | 2013-12-04 | 2014-03-19 | 鞠小平 | Flange for automobile |
| CN103644221A (en) * | 2013-12-04 | 2014-03-19 | 鞠小平 | Automobile braking mechanism |
| CN103644406B (en) * | 2013-12-04 | 2016-04-27 | 鞠小平 | The flange of automobile |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20161015 |