Left suspension damping device for motor of electric automobile

Abstract

The invention discloses a left suspension damping device for a motor of an electric automobile. The damping device comprises a bracket arm support and a damping support which is arranged on the bracket arm support, wherein an inner sleeve is sleeved on the damping support; the inner sleeve and the damping support are vulcanized and connected integrally through a vibration isolating rubber body; the inner sleeve is molded by extruding aluminum 6061 and arranged on the bracket arm support through a fixing bolt; the damping support is molded by stamping and welding a support frame and a bottom plate; the support frame is made of Q235 steel; the bottom plate is made of St12 steel; and the bracket arm support is molded by stamping and welding a support, two first cushion blocks and a second cushion block. The left suspension damping device for the motor of the electric automobile has a simple structure, high vibration isolating performance and high durability and is convenient to produce, manufacture and assemble.

Description

technical field [0001] The invention relates to a component of an electric vehicle, in particular to a vibration damping device for the left suspension of an electric vehicle motor. Background technique [0002] At present, automotive power suspension systems are mostly developed for traditional engine vehicles. The excitation characteristics of the internal combustion engine are obviously different from those of the electric vehicle motor. The motor speed increases from 0r / min to the rated speed, and the frequency changes continuously. , without the idling phenomenon of traditional internal combustion engines. The power system of an electric vehicle is composed of a motor and a reducer, which are installed on the sub-frame through the motor suspension system. The motor is a major vibration and noise excitation source, including the excitation force generated by the rotor mass imbalance when the motor is running at high speed , the excitation generated by the fluctuation of...

AI Technical Summary

Problems solved by technology

The power system of an electric vehicle is composed of a motor and a reducer, which are installed on the sub-frame through the motor suspension system. The motor is a major vibration and noise excitation source, including the excitation force generated by the imbalance of the rotor mass when the motor is running at high speed , the excitation generated by the fluctuation of electromagnetic torque, as well as the torsional vibration of the motor caused by the uneven road surface and the fluctuation of adhesion, the size of the vibration noise directly affects the comfort of the vehicle and the service life of the motor. The traditional motor suspension vibration reduction system is generally There are disadvantages of complex structure and poor vibration damping effect

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