Self-adaptive air spring based on magnetorheological technology

Abstract

The invention discloses a self-adaptive air spring based on the magnetorheological technology, which comprises a magnetorheological elastomer rubber pneumatic bag, an upper cover plate, a lower cover plate, a piston rod, a piston, a working cylinder, a coil, acceleration transducers and a controller module; the upper end and the lower end of the magnetorheological elastomer rubber pneumatic bag are connected with the upper cover plate and the lower cover plate, respectively, compressible gas is filled in the inner cavity of the magnetorheological elastomer rubber pneumatic bag; the piston rod, the piston and the working cylinder are located in the inner part of the magnetorheological elastomer rubber pneumatic bag; the upper end of the piston rod is connected with the upper cover plate, the lower end of the piston rod and the piston are connected into one body to vertically slide in the working cylinder; the coil is rolled inside the piston; the lower end of the working cylinder is connected with the lower cover plate, the inner cavity of the working cylinder is filled with magnetorheological elastomer fluid, the fluid flows back and forth in a gap between the piston and the working cylinder; two acceleration transducers are connected with the controller module through signal lines, respectively; the controller module is connected with the coil through a control wire. The self-adaptive air spring is compact in structure and short in responding time; furthermore, the self-adaptive air spring has the characteristics of automatically adjusting the rigidity and the damping value, improving the riding comfort and the operation stability of carrying tools.

Description

(1) Technical field [0001] The invention relates to an air spring, in particular to an adaptive air spring based on magneto-rheological technology; the air spring can automatically adjust its stiffness and damping value in real time according to the load of the vehicle body and the excitation condition of the actual working road surface, so as to improve the performance of the vehicle. Vibration and noise reduction performance improves ride comfort and operational stability. This system can also be applied to heavy machinery to reduce the impact and vibration of external loads on the mechanical structure. The utility model belongs to the technical field of carrying tools and engineering machinery. (2) Background technology [0002] During the normal driving process of the car, the force on the vehicle is often impact, and the road conditions are complex and changeable, so the excitation amplitude and frequency of the external load will be different. In practical applicatio...

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Problems solved by technology

However, the adjustment response time of height and stiffness is mechanical response time, non-intelligent suspension system

In addition, the air spring will vibrate during the process of absorbing the external impact load, but it does not have damping characteristics and cannot attenuate the vibration.

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