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Wet brake with step sealing structure

A wet brake and sealing structure technology, which is applied in the direction of brake actuators, engine seals, engine components, etc., can solve the problems of pressure oil leakage to the other side, reduce the sealing effect, and affect the braking effect of wet brakes, etc., to achieve Reduce wear, prolong service life and improve braking effect

Inactive Publication Date: 2012-04-04
SICHUAN CHENGDU CHENGGONG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the braking process of the wet brake, the piston reciprocates relative to the housing, and there is friction between the sealing ring and the piston. After a period of time, the lip of the sealing ring is worn, which reduces the sealing effect and causes pressure oil to leak from one side to the other. One side, which ultimately affects the braking effect of wet brakes

Method used

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Embodiment Construction

[0014] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0015] like figure 1 As shown, a wet brake with a Ster seal structure, the connection relationship of the above components is: a seal is provided at the joint between the casing 2 and the outer diameter of the piston 1, and the seal is a Ster seal 3 .

[0016] The above-mentioned Step seal seal 3 is composed of a rubber O-ring and a wear-resistant ring.

[0017] The wear-resistant ring in this embodiment is a polytetrafluoroethylene wear-resistant ring. During use, the O-ring is a force-applying element that provides sufficient sealing force and compensates for the polytetrafluoroethylene wear-resistant ring. Polytetrafluoroethylene The tetrafluoroethylene wear-resistant ring plays a role in wear resistance during use, reduces wear, and is used to isolate the pressure oi...

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Abstract

The invention discloses a wet brake with a step sealing structure. The wet brake comprises a piston (1) and a shell (2), wherein a sealing element is arranged at the cooperating part of the shell (2) with the outer diameter of the piston (1), and the sealing element is a step sealing element (3); the step sealing element (3) comprises a rubber O-ring and a wear-resisting ring. In the wet brake provided by the invention, the O-ring is a force application element, provides a sufficient sealing force and compensates the wear-resisting ring, and the wear-resisting ring plays the action of wear resistance in the use process so as to reduce wearing, therefore, the sealing property is enhanced, the service life is prolonged, and the braking effect of the wet brake is improved.

Description

technical field [0001] The invention relates to a drive axle device, in particular to a wet brake with a Ster seal structure. Background technique [0002] In the field of drive axle brakes of loaders, various rubber sealing rings are commonly used to seal the joint between the piston and the housing of the existing wet brakes, and the sealing rings are used to isolate the pressure oil from entering the other side from one side. During the braking process of the wet brake, the piston reciprocates relative to the housing, and there is friction between the sealing ring and the piston. After a period of time, the lip of the sealing ring is worn, which reduces the sealing effect and causes pressure oil to leak from one side to the other. One side, which ultimately affects the braking effect of wet brakes. Contents of the invention [0003] The invention overcomes the disadvantages of the prior art and provides a wet brake with a good sealing effect and a wear-resistant Stretc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16F16D65/14
Inventor 罗海燕焦志楠吴水深梁建宗
Owner SICHUAN CHENGDU CHENGGONG CONSTR MACHINERY
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