Motor wheel set unit of motor rigid shaft-holding gearless driving

Abstract

The invention discloses a new structure of a motor wheel set unit of motor rigid shaft-holding gearless driving. Compared with the traditional wheel set motor unit which transfers torque by gear drive, the structure well solves the contradictions between the high rotating speed and the low torque of the motor, and between the low rotating speed and the large torque of the wheel set, and one more gear drive system is provided. The new wheel set motor enables the center line of the motor to be overlapped with the center line of the wheel set axle, wherein the axle is a motor rotor and the motor shell is a motor stator. Without the gear drive, the electromagnetic torque generated by the motor directly drives the axle, the counter torque generated by the motor shell is balanced by a motor pull rod arranged on the shell, and the rubber joints at two ends of the motor pull rod are respectively connected with the motor shell and a truck beam. The motor wheel set unit of motor rigid shaft-holding gearless driving disclosed by the invention is capable of realizing the functions of the traditional wheel set motor unit, satisfying the growing requirements on energy saving as well as environmental protection and improving the curved passing capacity of a bullet train, and has the characteristics of being simple and convenient in structure, high in efficiency, safe and reliable.

Description

Technical field [0001] The patent of the invention is a new structure of a motor wheel set unit with a motor rigidly holding a shaft without gear transmission. The traditional wheel-to-motor unit structure uses gear transmission to transmit traction or braking torque. The center line of the motor does not coincide with the center line of the wheel set. The small torque generated by the high-speed motor is amplified by the reduction gear transmission system and then directly driven. In the wheel set, the small gear in the gearbox is connected with the output shaft of the motor, and the large gear is installed on the wheel set axle. This structure better solves the contradiction between the high speed and small torque of the motor and the low speed and high torque of the wheel set, but there is an extra gear transmission system, which increases the structural cost and the maintenance cycle cost of the whole life, reduces the efficiency, The noise is increased, and the wheelbase...

AI Technical Summary

Problems solved by technology

Due to the addition of a gear transmission system, the structural cost and the maintenance cycle cost of the whole life are increased, the transmission efficiency is reduced, the noise is increased, and the wheelbase of the bogie is increased, which affects the curve passing performance of the train.

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