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Nonlinear conical auxiliary spring and air spring

An auxiliary spring, non-linear technology, applied in the direction of springs, spring/shock absorbers, gas shock absorbers, etc., can solve the problems of small vertical stiffness, damage, and affecting the service life of conical auxiliary springs

Active Publication Date: 2016-06-01
CRRC QINGDAO SIFANG ROLLING STOCK RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small vertical stiffness, such as Image 6 As shown, the load displacement of the elastic medium layer is close to linear, and its deflection is too large under heavy load and no load, which will lead to excessive compression of the elastic medium layer under heavy load conditions, sinking of the car body and damage to other components, and excessive use time For a long time, the elastic medium layer will undergo irrecoverable deformation, which will affect the service life of the conical auxiliary spring

Method used

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  • Nonlinear conical auxiliary spring and air spring
  • Nonlinear conical auxiliary spring and air spring
  • Nonlinear conical auxiliary spring and air spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, the non-linear conical auxiliary spring includes a shaft core 1, and the shaft core 1 is a body of revolution in the shape of a truncated cone.

[0021] It also includes an auxiliary spring arranged around the outer peripheral surface of the shaft core 1; the auxiliary spring is a tapered elastic medium, and a rubber layer is used in this embodiment. From the direction close to the outer peripheral surface of the shaft core to the direction away from the outer peripheral surface of the shaft core, there are multiple partition layers arranged at intervals in the rubber layer; the rubber layer is divided into a structure separating the rubber layer and the partition layer, that is, the rubber layer I2, the partition I3, rubber layer II4, separator II5, rubber layer III6 spaced structure. There are 7 layers of coats outside the rubber layer III6.

[0022] Since the shaft core 1 is in the shape of a truncated cone, it includes two upper and low...

Embodiment 2

[0026] Such as figure 2 As shown, different from Embodiment 1, the partition II5 also includes a partition section 501 parallel to the outer peripheral surface of the shaft core 1 and a partition section 502 close to the outer peripheral surface of the shaft core, and a section close to the outer peripheral surface of the shaft core 1 The partition section 502 is located on the side close to the wider end surface of the shaft core 1 , that is, the side where the steering system is installed.

[0027] The working principle is the same as that of Embodiment 1. When the vertical load on the side of the vehicle body increases to a certain extent, the partition section 302 contacts the shaft core 1, the partition section 502 contacts the partition 3, and the rubber layer I2 and the rubber layer II4 are no longer involved in vertical deformation.

Embodiment 3

[0029] The difference from Embodiment 1 and Embodiment 2 is that the upper end face of the shaft core 1 with a larger area is the mounting surface on the side close to the vehicle body, and the opposite side is the mounting surface on the side close to the steering system.

[0030] Such as image 3 As shown, the rubber layer I2 is the elastic medium layer closest to the outer peripheral surface of the shaft core 1 , and the separator I3 is the separator layer closest to the outer peripheral surface of the shaft core 1 . Separator 1 includes a section of partition 301 parallel to the outer peripheral surface of the shaft core 1 and a partition section 302 close to the outer peripheral surface of the shaft core, and a section of partition 302 near the outer peripheral surface of the shaft core is located near the wider end surface of the shaft core. side.

[0031] Its working principle is the same as embodiment 1.

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Abstract

A nonlinear conical auxiliary spring comprises a central spindle. The central spindle is a rotating body and is in the shape of a cone or a cone frustum. The nonlinear conical auxiliary spring further comprises an auxiliary spring body which surrounds the outer circumferential surface of the central spindle. The auxiliary spring body is a conical elastic medium and moves in the direction away from the outer circumferential surface of the central spindle. A plurality of partition board layers are arranged in the conical elastic medium at intervals. The partition board layer nearest to the outer circumferential surface of the central spindle comprises a partition board section parallel to the outer circumferential surface of the central spindle and a partition board section close to the outer circumferential surface of the central spindle, wherein the partition board section close to the outer circumferential surface of the central spindle is located on the side close to the wide end face of the central spindle. The invention further provides an air spring adopting the nonlinear conical auxiliary spring. By improving the partition board structure of the conical auxiliary spring, the structure of the nonlinear conical auxiliary spring is designed, the deflection difference under heavy load and no-load conditions is reduced, and the situation that other components are damaged due to the fact that a vehicle body sinks is avoided.

Description

technical field [0001] The invention relates to a shock absorbing device, in particular to a conical auxiliary spring for shock absorption, and an air spring for shock absorption applied to rail vehicles designed with the structure of the conical auxiliary spring. Background technique [0002] The conical auxiliary spring is installed between the car body and the steering system. Because of its low vertical stiffness, it is widely used in the field of vehicle shock absorption to improve the shock absorption of the car body and enhance the comfort of the ride. [0003] Such as Figure 5 As shown, the conical auxiliary spring is composed of a shaft core and an elastic medium layer, and a plurality of separator layers are arranged at intervals in the elastic medium layer. When it works, the vertical pressure on the side of the car body is transmitted downward, and the effect of shock absorption is achieved due to the action of the elastic medium layer. However, due to the smal...

Claims

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Application Information

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IPC IPC(8): F16F9/04
CPCF16F9/0418
Inventor 刘万强李雪冰王国栋刘志坡
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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