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Single-circulation-structure oil damper piston assembly for rail car

A technology for hydraulic shock absorbers and rail vehicles, which is applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., and can solve the problems of easy leakage of the valve plate, so that it is not easy to leak, low in processing accuracy requirements, The effect of damping force value stabilization

Pending Publication Date: 2020-06-12
深圳市业成实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention proposes a piston assembly of a single-circulation structure oil pressure shock absorber for rail vehicles. The shock absorber piston assembly of the present invention adopts a one-way core valve structure instead of a traditional The problem that the film is easy to leak

Method used

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  • Single-circulation-structure oil damper piston assembly for rail car
  • Single-circulation-structure oil damper piston assembly for rail car
  • Single-circulation-structure oil damper piston assembly for rail car

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Embodiment 1

[0020] Embodiment 1: as Figure 1-5 As shown, a piston assembly of a single-circulation structure hydraulic shock absorber for rail vehicles in the present invention mainly includes: a piston body and four sets of valve trains distributed symmetrically along the center of the piston body, wherein the valve trains are arranged on In the through hole opened on the piston body, the valve system includes: an adjusting screw, a spring and a core valve. The two ends of the spring are respectively connected with the adjustment screw and the core valve, the middle part of the core valve is provided with an oil passage, and the side wall of the core valve is provided with a discharge valve connected with the oil passage. Loading hole, when the piston is in a stretched state, the unloading hole is closed by the inner wall of the through hole, and the oil passage is also in a closed state at this time, when the piston is in a compressed state, the unloading hole and the The inner wall o...

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Abstract

The invention relates to a single-circulation-structure oil damper piston assembly for a rail car. The single-circulation-structure oil damper piston assembly comprises a piston body and at least onevalve system. The valve system comprises an adjusting screw, a spring and a core valve. The two ends of the spring are connected with the adjusting screw and the core valve correspondingly. An oil channel is formed in the middle of the core valve. The side wall of the core valve is provided with an unloading hole communicating with the oil channel. When a piston is at a stretched state, the unloading hole is closed by the inner wall of the through hole, and when the piston is at a compressed state, the unloading hole is staggered from the inner wall of the through hole to be opened. Accordingto the damper piston assembly, a one-way core valve type structure replaces a traditional valve block type structure, so that the problem that a valve block is prone to leaking is solved.

Description

technical field [0001] The invention belongs to the technical field of oil pressure shock absorbers for rail vehicles, in particular, the invention relates to a piston assembly of a single cycle structure oil pressure shock absorber for rail vehicles. Background technique [0002] Oil pressure shock absorbers for rail vehicles are used to reduce vehicle suspension vibration, ensure rail vehicles run safely and smoothly on the line, and improve passenger comfort. According to the oil flow direction when the shock absorber moves, it can be divided into single-cycle oil pressure shock absorber and double-cycle oil pressure shock absorber. The shock absorber with the same oil flow direction when the shock absorber moves in tension and compression It is called a single-cycle shock absorber, and a shock absorber with inconsistent oil flow during the tension and compression movement of the shock absorber is called a double-cycle shock absorber. The function of the piston of the oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/34F16F9/32
CPCF16F9/3207F16F9/3214F16F9/34
Inventor 莫焱森吴旭
Owner 深圳市业成实业有限公司
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