Method and structure for eliminating noise of torsion bar system

A torsion bar and noise technology, applied in the field of rail vehicles, can solve problems such as noise, and achieve the effects of improving wear resistance, uniformly increasing compressive modulus, and reducing friction coefficient

Pending Publication Date: 2018-10-02
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the problem that the current torsion bar system generates noise during operation, the present invention proposes a method and structure for eliminating the noise of the torsion bar system, which can eliminate the noise of the torsion bar system and prolong the service life of the torsion bar system

Method used

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  • Method and structure for eliminating noise of torsion bar system
  • Method and structure for eliminating noise of torsion bar system
  • Method and structure for eliminating noise of torsion bar system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]A structure for eliminating the noise of the torsion bar system, including a support seat 2, a support ball joint 3 and a torsion bar shaft 1, the support ball joint 3 is arranged in the support seat 2, the torsion bar shaft 1 passes through the support ball joint 3, and the support seat 2 And the support ball joint 3 adopts a two-lobe structure; in this embodiment, the PTFE self-lubricating coating with a low friction coefficient is sprayed on the position where the torsion bar shaft 1 contacts with the support ball joint 3 to improve the noise generated during operation. The material is The friction pair formed between the nylon 66 supporting ball joint 3 and the torsion bar shaft 1 with PTFE self-lubricating coating on the surface has a friction coefficient that is reduced to 0.1-0.4 compared with the original structure, and the torsion bar system of this structure is on-line There is no noise when starting up, and there will be noise during subsequent operation, but i...

Embodiment 2

[0045] Such as figure 2 As shown, in the present embodiment, nylon 66 is used as the spherical joint casing 31 supporting the spherical hinge 3, and the PET wear-resistant layer 32 with a low friction coefficient is vulcanized inside the spherical hinge casing 31, and the inside is the supporting ball of the PET wear-resistant layer 32. Compared with the original structure, the friction coefficient of the friction pair formed between the hinge 3 and the torsion bar shaft 1 sprayed with PTFE self-lubricating coating on the outside is greatly reduced to 0.05-0.2. The reduction of friction between the supporting ball joint 3 and the torsion bar shaft 1 can not only avoid noise, but also reduce the wear between the supporting ball joint 3 and the torsion bar shaft 1, prolonging the service life of the torsion bar system.

Embodiment 3

[0047] In this embodiment, the outer diameter of the supporting spherical hinge 3 is slightly larger than the inner diameter of the supporting seat 2, and the supporting spherical hinge 3 is pre-compressed and has an interference fit with the supporting seat 2, and the wear-resistant layer 32 of the supporting spherical hinge 3 and the torsion bar shaft 1 with a slight gap between them. The interference fit between the supporting spherical hinge 3 and the supporting seat 2 after pre-compression avoids the gap between the supporting spherical hinge 3 and the supporting seat 2 in the original structure, so that the torsion bar shaft 1 drives the supporting spherical hinge 3 and the supporting seat during the movement 2 produces relative motion, and the friction between the supporting ball joint 3 and the supporting seat 2 also makes the range of motion of the torsion bar shaft 1 too large, resulting in impact noise; a small gap is set between the supporting ball joint 3 and the t...

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Abstract

The invention provides a method and structure for eliminating the noise of a torsion bar system. The structure comprises a supporting seat, a supporting spherical hinge and a torsion bar shaft, wherein the supporting spherical hinge is arranged in the supporting seat; the torsion bar shaft passes through the supporting spherical hinge; after the supporting spherical hinge is compressed in advance,the supporting spherical hinge is in interference fit with the supporting seat; a spherical hinge outer sleeve having a supporting effect is arranged at the outer side of the supporting spherical hinge; a high polymer wear resisting layer with a low friction coefficient is arranged at the inner side of the supporting spherical hinge; the outer layer, matched with the supporting spherical hinge, of the torsion rod shaft is coated with a wear resisting coating with a low friction coefficient; and a tiny gap is formed between the wear resisting layer of the supporting spherical hinge and the torsion bar shaft. The friction coefficient between the supporting spherical hinge and the torsion bar shaft is reduced by adopting a wear resisting self-lubricating friction pair so as to reduce the friction between the supporting spherical hinge and the torsion bar shaft; and the impact noise generated during operation is avoided by reducing the up and down movement range of the torsion bar shaft.The method and structure can eliminate the noise of the torsion bar system, and meanwhile can prolong the service life of the torsion bar system.

Description

technical field [0001] The invention relates to a method and structure for eliminating noise, in particular to a method and structure for eliminating noise of a torsion bar system, and belongs to the technical field of rail vehicles. Background technique [0002] In a torsion bar system currently used on rail vehicles, the torsion bar shaft adopts a built-in support method, and the support ball joint is a two-petal friction structure. Noise is generated, but the cost of changing related components is too high, such as changing the ball joint to a frictionless rubber metal part, and when the inner sleeve of the supporting ball joint is made of friction-resistant nylon material, there is still a big noise problem. [0003] The current status of the torsion bar system in use is as follows: [0004] 1) There is a discontinuous "click" sound when the support ball joint is running on the torsion bar assembly [0005] 2) The friction coefficient of the friction pair when the tors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/10F16F15/02B61F5/50
CPCF16C33/1095F16F15/02B61F5/50F16F2224/00
Inventor 倪世锋舒标李鹏邹敏佳刘文松
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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