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Air spring with function of regulating dynamic rigidity according to adaptive pressure and buffering step pressure

An air spring, self-adaptive technology, applied in the direction of spring, spring/shock absorber, gas shock absorber, etc., can solve the problem of non-continuous adjustment of stiffness, achieve smooth and continuous adjustment, reasonable and controllable adjustment stiffness characteristic curve , the effect of improving the dynamic stiffness adjustment ability

Inactive Publication Date: 2012-01-25
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This adjustment of stiffness is not continuous

Method used

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  • Air spring with function of regulating dynamic rigidity according to adaptive pressure and buffering step pressure
  • Air spring with function of regulating dynamic rigidity according to adaptive pressure and buffering step pressure

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Embodiment Construction

[0008] The specific embodiment of the present invention is: the dynamic stiffness adjustment of the air spring: the air pressure in the air bag 1 directly acts on the upper end surface of the throttle valve core 4, and its lower end is axially supported by the spring 5, and the vehicle is at no-load and set height At this time, the air pressure in the air spring airbag 1 multiplied by the cross-sectional area of ​​the throttle spool 4 produces a thrust that is balanced with the spring force of the spring 5. The air chamber of the air bag is connected and is at the largest opening, and the dynamic stiffness of the air spring is the smallest; when the load and dynamic load of the vehicle increase, the air pressure in the air bag 1 rises, and the thrust generated by acting on the upper end surface of the throttle valve core 4 increases , push the throttle spool 4 to overcome the spring force of the spring 5 and move down to reach a new balance, and the throttle spool 4 moves down ...

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Abstract

An air spring is of key importance for improving the smoothness and the comfortableness of a vehicle, protecting roads and cargoes and limiting overload. In the conventional design, people ignore a difference between the rigidity of an air bag in a selectable standard series and the rigidity required by a specific vehicle; however, due to mismatch of the static rigidity of the air bag, the dynamic rigidity of the air spring is difficult to regulate; and in a passive air suspension system, the mismatch of the static rigidity of the air bag is an important reason why the vehicle produces a serious sidesway phenomenon during running. The conventional dynamic rigidity regulation is realized by connecting the main air chamber and the auxiliary air chamber and then changing a pressure difference, produced by flow of air, between a main air chamber and an auxiliary air chamber by regulating a throttling opening on a channel of the air spring; and by such a rigidity regulation system, the volumes of the air chambers are not changed during regulation, so the difficulty in rigidity regulation is higher. In order to solve the problems, the invention provides a novel air spring which has low cost, is simple and reliable and is quick in response and has a function of regulating the dynamic rigidity of the air spring according to the adaptive pressure difference and the volume and step pressure buffering.

Description

1. Technical field: [0001] The invention relates to an air spring for a vehicle air suspension. The air spring with dynamic stiffness adaptive pressure difference and volume combination adjustment plus step pressure buffering is especially suitable for passenger buses, urban public transport buses, and large freight trucks. And rail transit vehicles, and special vehicles and limousines. 1. Background technology: [0002] In order to improve the ride comfort of the car, improve the comfort of the ride, and reduce the damage of the vehicle to the road and goods, developed countries have widely used air springs in the suspension systems of their transport vehicles. In recent years, my country is also vigorously promoting and mandating the use of air springs. In the continuous development of air spring technology, in order to further improve the stiffness adjustment characteristics of air spring, so that it is more suitable for the change of vehicle load, people have carried ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/04F16F9/50
Inventor 贺劼
Owner 贺劼
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