Magneto-rheological torsional shock absorber for electric wheel

Abstract

The invention discloses an electric wheel magnetorheological torsional vibration damper, comprising a motor rotor which can be connected with the power output end of a wheel hub motor and a wheel hub rotor which can be fixed with the wheel hub; the motor rotor comprises a motor rotor connecting plate, and the motor rotor connecting plate There are motor rotor shaft teeth spaced on the circumferential side surface of the hub rotor, the hub rotor includes a hub rotor ring and hub rotor shaft teeth arranged on the circumferential inner surface of the hub rotor ring at intervals, and the hub rotor shaft teeth are arranged on two adjacent motor rotors Between the shaft teeth, a connecting spring is fixed between the side surface of the motor rotor shaft tooth and the side surface of the hub rotor shaft tooth adjacent to the motor rotor shaft tooth, and the space formed by the motor rotor shaft tooth and the hub rotor shaft tooth The inner seal is provided with magnetorheological fluid. Through the relative rotation of the hub rotor and the motor rotor, the magnetorheological fluid generates a damping force opposite to the torque fluctuation of the hub shaft, which reduces the influence of wheel runout and impact on the normal operation of the reducer and the motor.

Description

technical field [0001] The invention relates to the technical field of automobile shock absorbers, in particular to a magneto-rheological torsional shock absorber for electric wheels. Background technique [0002] With the increasing consumption and deterioration of fossil energy in recent years, the modern automobile industry has ushered in a new development direction. Pure electric vehicles have become a research hotspot in automobile design and manufacturing due to their "zero emission" of waste during use, efficient energy utilization, and more convenient and intelligent control, and have become the main direction of automobile technology and industrial development. As a main driving form of electric vehicles, in-wheel motor drive eliminates the transmission, drive shaft, universal joint and differential vehicle transmission system, realizes the goal of vehicle lightweight, and greatly improves the transmission efficiency. According to the above Advantages, hub motor dr...

AI Technical Summary

Problems solved by technology

However, when the wheel hub motor is driving, the motor is directly connected to the wheel hub or reducer, the wheel is in contact with the road surface and the wheel hub system has no shock absorber, resulting in a relatively harsh working environment for the motor, which reduces the working performance and life of the motor , and at the same time have an impact on the NVH performance of the car

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