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Semi-active intelligent friction cylinder shock absorber of vehicle suspension

A vehicle suspension, semi-active technology, applied in friction shock absorbers, non-rotational vibration suppression, etc., can solve the problems of low life, high cost, difficulty in changing damping, etc., to achieve better safety, fast response, structural simple effect

Active Publication Date: 2015-08-19
BEIHANG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changing the spring stiffness can only be realized by switching the air spring or the oil-pneumatic spring, and the air spring and the oil-pneumatic spring assembly have high precision requirements, low life, high cost, and need to be equipped with a power source—air compressor and other factors, which makes the ratio change damping much more difficult

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  • Semi-active intelligent friction cylinder shock absorber of vehicle suspension
  • Semi-active intelligent friction cylinder shock absorber of vehicle suspension
  • Semi-active intelligent friction cylinder shock absorber of vehicle suspension

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with accompanying drawings and examples.

[0027] The vehicle suspension system must meet two requirements of good ride comfort (small stiffness, large damping) and good handling stability (high stiffness, small damping), no matter from the point of view of stiffness design or damping design, These two requirements are contradictory, and it is difficult for passive suspension design to meet them simultaneously. On the other hand, the current semi-active suspension can only adjust the damping but not the stiffness; in view of this situation, the present invention realizes a semi-active vehicle suspension shock absorber with adjustable stiffness and damping by introducing an intelligent material actuator. The shock absorber does not require major changes to the main elastic support of the existing vehicle suspension.

[0028] The present invention is a semi-active vehicle suspension intelligen...

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Abstract

The invention discloses a semi-active intelligent friction cylinder shock absorber of a vehicle suspension. The shock absorber comprises a first spindle, a main support spring, a sealing ring, a second spindle, a lower cylinder end cover, a cylinder body, a passive spring, a spindle friction ring, a piston ring, an auxiliary spring, a sliding sleeve, a cylinder friction material, slider friction materials, guide rail sleeves, controllable friction sliders, piezoelectric actuators and pre-tightening springs. The shock absorber is simple in structure and easy to implement. The shock absorber can be modified on the basis that the original suspension. Friction blocks and piezoceramic materials are relatively mature techniques developed on the market, and good economy, low carbon, environmental protection, high reliability and easiness in maintenance are achieved.

Description

technical field [0001] The invention belongs to the technology of semi-actively controlling the vibration stability of a vehicle suspension, in particular to an intelligent friction cylinder shock absorber for a semi-active vehicle suspension. Background technique [0002] Automobile suspension is a key component to ensure the comfort and running stability of the automobile. An ideal car suspension should be able to adjust according to different road conditions, driving speeds, and different feelings of drivers. [0003] Currently known suspension systems can be divided into three types: passive suspension, semi-active suspension and active suspension. [0004] Among them, the passive suspension refers to the suspension whose stiffness and damping cannot change with the running state, and it is composed of springs, shock absorbers and guiding mechanisms. Its advantages are simple structure, reliable performance, low cost, and no extra energy, so it is the most widely used....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/08F16F15/02F16F15/03
CPCF16F7/08F16F15/02F16F15/03
Inventor 李琳李俊李超
Owner BEIHANG UNIV
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