Low-temperature-resistant air spring upper seam allowance sealing structure, method and product

A technology of air spring and sealing structure, applied in the direction of spring, spring/shock absorber, gas shock absorber, etc., can solve the problem of rubber creep that cannot be solved in the air bag, and the rubber of the body is cold and shrinked, so as to improve the sealing reliability and Use reliability, meet sealing requirements, and ensure the effect of sealing reliability

Pending Publication Date: 2019-06-28
ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution only adds a sealing ring on the same surface as the original sealing surface, but it cannot solve the phenomenon of creep of the rubber of the airbag and shrinkage of the rubber of the body when it is cooled. After a period of use, the upper mouth of the air spring is on the sealing surface of the upper cover The reduction of compression at the position may cause air leakage, and this solution also requires a larger space at the connection between the outer side of the airbag and the screw to place the sealing ring of the upper mouth

Method used

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  • Low-temperature-resistant air spring upper seam allowance sealing structure, method and product
  • Low-temperature-resistant air spring upper seam allowance sealing structure, method and product

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Experimental program
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Effect test

Embodiment 1

[0038] Low temperature resistant air spring upper mouth seal structure, including upper cover plate 1, buckle ring 2 close to the bottom surface of upper cover plate 1, connecting bolt 3 connecting upper cover plate 1 and buckle ring 2 and upper mouth 4 of the airbag, upper The sub-port 4 is compressed between the upper cover plate 1 and the retaining ring 2, the retaining ring 2 and the connecting bolt 3 are arranged on the radially outside of the upper sub-port 4, the capsule 100 below the upper sub-port 4 is attached to the inner wall of the retaining ring 2 Combined and attached to the bottom surface of the buckle 2 along the downward direction, it is characterized in that radial seals and axial seals are used between the upper cover plate 1 and the upper sub-port 4 and between the upper sub-mouth 4 and the buckle 2 Alternately arranged and sequentially connected sealing structures, the sealing pressure of at least one axial sealing surface of the upper sub-port 4 on the up...

Embodiment 2

[0051] The difference from Embodiment 1 is that there is only one axial fitting surface 44 in the upper sub-mouth 4, and this axial fitting surface 44 is arranged between two radial fitting surfaces 4, where the axial fitting The height of the radial mating surface 43 inside the surface 44 is lower than the height of the radial mating surface 43 arranged outside the axial mating surface 44. The mating surface 43 is connected to form a top protrusion 45, and the axial sealing mating surface 12 is connected with the radial sealing mating surface 11 to form an upper cover plate groove 13 matched with the top protrusion 45. The top protrusion 45 There is a temperature-rising deformation gap I5 between the groove 13 of the upper cover plate. The temperature-rising deformation gap 5 is located between the outer wall of the upper sub-mouth 4 and the side wall of the upper cover plate groove 13. The upper sub-mouth 4 and the buckle ring 2 There is a heating deformation gap II6 between...

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PUM

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Abstract

The invention discloses a low-temperature-resistant air spring upper seam allowance sealing structure. The sealing structure comprises an upper cover plate, a buckle ring, a connecting bolt and an upper seam allowance; the upper seam allowance is compressed between the upper cover plate and the buckle ring, the buckle ring and the connecting bolt are arranged on the radial outer side of the upperseam allowance, a bag body below the upper seam allowance is attached to the inner wall of the buckle ring and is attached to the bottom surface of the buckle ring downwards; a sealing structure formed by radial sealing and axial seal which are arranged alternately and connected in sequence is adopted between the upper cover plate and the upper seam allowance and between the upper seam allowance and the buckle ring, the sealing pressure of at least one axial sealing surface of the upper seam allowance to the upper cover plate faces the inner direction which is away from the connecting bolt, and the sealing pressure and the compression amount of the upper seam allowance are increased along with the loading and the displacement of the air spring. The sealing reliability of the upper seam allowance of the air spring in the loading process is guaranteed, effective sealing of the upper seam allowance in a low-temperature state is realized, and the sealing requirement of the air spring underthe low-temperature state is met. The invention further provides a low-temperature-resistant air spring upper seam allowance sealing method and a low-temperature-resistant air spring.

Description

technical field [0001] The invention relates to a sealing structure, method and product for an upper slit of a low-temperature-resistant air spring, which can realize effective sealing of the air spring in a low-temperature state. Background technique [0002] The sealing of the upper mouth of the air spring for rail transit mainly relies on installing and fixing the upper mouth of the airbag between the upper cover plate and the buckle through a certain number of screws. The purpose of compressing the slit rubber on the air bag is achieved by the tightening force exerted by the screw, thereby realizing the sealing performance of the slit on the air bag. [0003] With the development of the rail transit industry, more and more air spring products are used in various high-cold regions. However, due to the low-temperature and high-cold environment, the rubber of the air spring airbag will shrink due to cold, causing the air spring upper mouth to be sealed on the upper cover. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/04F16F9/36
Inventor 陈文海叶特彭旋程海涛陈灿辉周志鹏金状兵
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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