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A quasi-zero stiffness shock absorber for high-speed train floors

A high-speed train, quasi-zero stiffness technology, applied in the direction of spring/shock absorber, railway car body, vibration suppression adjustment, etc., can solve the problems of large deformation of the floor, large static deflection of supports, etc., and achieve compact structure of the device and vibration isolation The effect of low initial frequency and high availability

Active Publication Date: 2020-07-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the support stiffness of the rubber shock absorber is too low, the static deflection of the support will be too large, which will lead to problems such as excessive deformation of the floor

Method used

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  • A quasi-zero stiffness shock absorber for high-speed train floors
  • A quasi-zero stiffness shock absorber for high-speed train floors
  • A quasi-zero stiffness shock absorber for high-speed train floors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A quasi-zero stiffness shock absorber for high-speed train floors, such as figure 1 As shown, it includes the shock absorber upper support 1, the shock absorber lower support 4, the disc spring 3 arranged between the shock absorber upper support 1 and the shock absorber lower support 4, and the disc spring 3 arranged inside The rubber spring 2, the upper and lower ends of the rubber spring 2 abut against the upper support 1 of the shock absorber and the lower support 4 of the shock absorber respectively. The inner side of the upper end of the disc spring 3 is fixedly connected with the outer side of the side wall of the upper end support 1 of the shock absorber, and the outer side of the lower end of the disc spring 3 is fixedly connected with the inner side of the side wall of the lower end support 4 of the shock absorber. The rubber spring 2 is cylindrical or cuboid. There is a gap between the side of the rubber spring 2 and the inside of the side wall of the shock ab...

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Abstract

The invention relates to a quasi-zero rigidity shock absorber for a high speed train floor. The quasi-zero rigidity shock absorber for the high speed train floor comprises a shock absorber upper end support (1), a shock absorber lower end support (4), a disc spring (3) arranged between the shock absorber upper end support (1) and the shock absorber lower end support (4), and a rubber spring (2) arranged in the disc spring, wherein the upper end and the lower end of the rubber spring (2) are abutted against the shock absorber upper end support (1) and the shock absorber lower end support (4). Compared with the prior art, the quasi-zero rigidity shock absorber for the high speed train floor provided by the invention is compact in structure, less in occupied space, good in shock isolation performance, capable of effectively isolating low-frequency shock, and beneficial to improving the riding comfort of a high speed train.

Description

technical field [0001] The invention relates to a shock absorber, in particular to a quasi-zero-rigidity shock absorber for the floor of a high-speed train. Background technique [0002] As the speed of high-speed trains increases, the vibration of the car body increases. In order to further improve the ride comfort of high-speed trains, it is necessary to install shock absorbers under the floor. At present, rubber shock absorbers are usually used on the floor of high-speed trains. According to the vibration isolation theory, the lower the support stiffness of the rubber shock absorber, the lower the initial frequency of vibration isolation, which is more conducive to isolating low-frequency vibrations. However, if the support stiffness of the rubber shock absorber is too low, the static deflection of the support will be too large, which will lead to problems such as excessive deformation of the floor. Contents of the invention [0003] The object of the present invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/08B61D17/10
CPCB61D17/10F16F15/085
Inventor 周劲松孙煜宫岛孙文静夏张辉陈江雪
Owner TONGJI UNIV
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