Elastic coupling

Abstract

The invention provides an elastic coupling, which includes a drive disc, a pull rod, a rubber ball joint, a drive pin and a connecting screw; the drive disc includes an integrated motor shaft socket part and three connecting parts; There are 6 identical ones, and the tie rod includes an integrated ring part at both ends and a straight plate body in the middle; the rubber ball joint includes an inner ring, an outer ring and a rubber interlayer; the rubber interlayer of the rubber ball joint is arranged between the inner ring and the outer ring. Between the rings; the transmission disc and the pull rod are fixedly connected with the drive pin; the rubber ball joint is arranged in the installation hole of the ring part of the pull rod, and the pull rod is fixedly connected with the wheel through the rubber ball joint through the bolt when in use. The elastic coupling of the present invention directly connects the drive motor with the wheel set of the vehicle, overcomes the inherent defects of the traditional transmission system with a gearbox, improves the control accuracy of the system, has high transmission efficiency, obvious energy-saving effect, and the direct drive system is small in size, Light weight, low noise, easy maintenance.

Description

technical field [0001] The invention relates to the field of couplings, in particular to an elastic coupling for permanent magnet direct drive traction motors of urban rail transit trains. Background technique [0002] Most of the current electric locomotives are based on the power transmission system of induction motor and reducer. Coupling (also known as coupling) is an important part of the locomotive bogie drive system, which connects the traction motor shaft and the gear transmission system together. , so that the torque of the traction motor is transmitted to the wheels through the transmission connection part. The basic function of the coupling in the drive system is to transmit the torque between the concentric shafts; the second is to adapt to the three-way displacement of the radial, axial and deflection angles between the shoulders; the third is to provide the necessary elasticity of the drive shaft to reduce the Transmission noise. The coupling between the driv...

AI Technical Summary

Problems solved by technology

The disadvantage of the traditional mechanical transmission mode is that it does not have the effect of vibration reduction and vibration absorption, and the operation of the mechanical transmission is not stable enough; Defects such as high system noise, high friction loss, large energy loss, mechanical clearance or elastic deformation affect system accuracy, system transmission speed cannot be increased, system maintenance costs are high, system life is short, etc.

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