Novel magnetorheological damper

Abstract

The invention discloses a novel magnetorheological damper comprising an outer cylinder, a rotor cylinder located in the outer cylinder and a ball lead screw located in the rotor cylinder. One end of the ball lead screw stretches out of the outer cylinder, and a compression buffering block and a connecting screw rod are installed at the end of the ball lead screw, and meanwhile, the ball lead screw is further sleeved with a ball nut and a nut seat; the nut seat is fixedly connected with the top end of the rotor cylinder; the bottom end of the rotor cylinder penetrates through an upper partitioning plate, an outer stator and an inner stator and is connected with a rotor; the rotor cylinder and the rotor are supported on a pair of angular contact ball bearings to conduct rotating motion; the upper partitioning plate, the outer stator, the inner stator and the rotor form a closed chamber; the chamber is filled with magnetorheological fluids; two annular grooves are formed in the inner stator; coils are wound in the two annular grooves correspondingly; and two magnetic fields are produced after the coils are electrified. The novel magnetorheological damper has performance that the magnetorheological fluids are small in using amount, the damping is high , and the high damping is achieved even at a low frequency, the smoothness of a vehicle can be improved, and the control stability of the vehicle can be also controlled.

Description

technical field [0001] The invention relates to a novel magneto-rheological shock absorber, which belongs to the field of auto parts. Background technique [0002] Automotive semi-active suspension not only has low energy consumption, but also has a simple structure and high reliability. In most cases, it has similar characteristics to active suspension, so the application prospect of semi-active suspension is very broad. Adjustable damping shock absorber is one of the key components of semi-active suspension, and its performance directly affects the performance of semi-active suspension. [0003] The magnetorheological shock absorber uses magnetorheological fluid, a new type of smart material, as the working fluid of the shock absorber. An electromagnetic coil is wound on the piston shaft of the shock absorber. The magnetic field generated by the coil acts on the magnetorheological fluid. The magnitude of the electromagnetic coil current is used to change the yield stress ...

AI Technical Summary

Problems solved by technology

Since the roll vibration frequency of the suspension is low during the turning process of the car, this kind of shock absorber cannot provide sufficient anti-roll vibration damping force for the car when turning, which is very important for improving the steering stability and smoothness of the car during turning. sexual efficacy is limited

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