Coupler for shaft suspending type installing direct drive motor and rigid design method thereof

Abstract

The invention provides a coupler for a shaft suspending type installing direct drive motor. The coupler comprises an axle side connecting disc fixed coaxially with an axle, and a motor side connectingdisc fixed coaxially with a motor rotor shaft. The coupler is characterized by further comprising an elastic supporting rotating assembly. The elastic supporting rotating assembly is connected between the axle side connecting disc and the motor side connecting disc, thus the axle side connecting disc and the motor side connecting disc are coaxially connected in a rotating manner, the elastic supporting rotating assembly bears the motor weight in the radial direction, and the axle side connecting disc and the motor side connecting disc are elastically connected in the peripheral direction. According to the coupler, while the requirement for large radial load is met, the better vibration reducing and buffering effect can be obtained, the failure risk is reduced, the service life of a metalrubber part is prolonged, the use reliability of the coupler is improved, centering connection between the axle side connecting disc and the motor side connecting disc can be achieved easily, the installing reliability and convenience of the coupler are improved, the installing process is convenient and easy, and overhauling and replacing are facilitated. The invention further provides a rigiditydesign method of the coupler for the shaft suspending type installing direct drive motor.

Description

technical field [0001] The invention relates to a shaft coupling for a shaft-suspension mounted direct-drive motor and a stiffness design method thereof, belonging to the technical field of shaft couplings. Background technique [0002] The power bogie of a rail transit vehicle is mainly powered by a traction motor to realize wheel rolling motion. In order to meet the requirements of miniaturization and high transmission efficiency of the next-generation rail vehicle power bogie, the traction motor direct drive transmission system has become a research hotspot for major companies and research institutions. This system removes the gear box and other transmission devices, and the traction motor will be directly connected to the wheel shaft for driving, which has the advantages of high transmission efficiency, less maintenance, and low noise, but at the same time, the motor also needs to withstand the integrated wheel shaft. Larger magnitude vibration shock. In order to reduc...

AI Technical Summary

Problems solved by technology

[0003] In the above patents, the radial load is all sheared by the wedge-shaped rubber block, and its radial load-bearing capacity is insufficient, the rubber block is easily damaged, and the service life is short

And long-term heavy loads will cause the rubber block to creep, increasing the risk of failure of the motor system; In addition, the motor side connection structure and the axle side connection structure of the above patents cannot be aligned, and because the rubber block needs to be pre-pressed and installed, the elastic ring It is difficult to install each rubber block in place at the same time, and it needs to be installed with the help of complicated special fixtures, which is extremely inconvenient for installation and maintenance.

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