Non-linear hourglass type auxiliary spring

An auxiliary spring, non-linear technology, used in springs, springs/shock absorbers, mechanical equipment, etc. made of plastic materials, can solve problems such as high stiffness, achieve low cost, and solve the deflection difference between heavy load and no-load. Large, increase the effect of compression nonlinearity

Inactive Publication Date: 2015-10-14
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It realizes the vertical non-linearity of the auxiliary spring through the built-in reinforcement body, which has high rigidity, and at the same time, there is a problem of friction between the small rubber body and the upper end plate

Method used

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  • Non-linear hourglass type auxiliary spring
  • Non-linear hourglass type auxiliary spring
  • Non-linear hourglass type auxiliary spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The non-linear hourglass auxiliary spring of this embodiment comprises a support 1, a rubber 2 and a bottom plate 3, the support 1 is an inverted convex structure, the bottom surface of the support 1 is provided with a downward support column 7, and the support 1 The bottom surface is an inner concave surface; the center of the rubber 2 is provided with a concave hole matching the support column 7, and the rubber 2 wraps the entire support column 7 through the concave hole, and the edge of the rubber 2 is an inclined ellipsoid structure, and the top of the rubber 2 is in contact with the support column 7. The inner concave surface of seat 1 is in contact.

Embodiment 2

[0018] The non-linear hourglass auxiliary spring of the present embodiment is the same as embodiment 1 except the following differences:

[0019] The edge of the inner concave surface of the support 1 is arc-shaped, and when the heavy load is compressed, the rubber 2 and the support 1 change from line contact to surface contact, and the arc-shaped edge of the support 1 can completely fit the rubber 2; the support 1 and the rubber 2 is vulcanized into a whole through the support column 7 and the concave hole.

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Abstract

The invention belongs to the technical field of damping devices and relates to a non-linear hourglass type auxiliary spring. The load rigidity of the spring can be increased instantly, and the difference between heavy-load deflection and no-load deflection can be lowered. The non-linear hourglass type auxiliary spring comprises a support, rubber and a bottom plate. The support is of an inverted-T structure. The bottom surface of the support is provided with a downward supporting column. The bottom surface of the support is an inward concave surface. A concave hole matched with the supporting column is formed in the center of the rubber. The whole supporting column is wrapped by the rubber through the concave hole. The edge of the rubber is of an oblique ellipsoid structure. The top of the rubber makes contact with the inward concave surface of the support. The compression non-linearity of the auxiliary spring is remarkably improved, and the problem that the difference between heavy-load deflection and no-load deflection of a traditional auxiliary spring is too large is solved. The non-linear hourglass type auxiliary spring is simple in structure and low in cost.

Description

technical field [0001] The invention belongs to the technical field of shock absorbing equipment, and in particular relates to a nonlinear hourglass auxiliary spring whose load stiffness is instantly increased and the deflection difference between heavy load and no load is reduced. Background technique [0002] The hourglass auxiliary spring is widely used in rail vehicles because of its low vertical stiffness and low lateral stiffness. At the same time, due to its small vertical stiffness, its excessive deflection under heavy load and no load will cause the car body to Sinking damages other components. The structure of the traditional hourglass auxiliary spring is as follows: figure 1 As shown, its load-displacement curve is close to linear, such as figure 2 , the deflection difference between no-load and heavy-load is large, and it is easy to cause the car body to sink and damage other components. [0003] Chinese patent 201320710584.2 discloses a non-linear rubber aux...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/38
CPCF16F1/38
Inventor 李雪冰刘兆栋刘志坡刘万强
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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