Electric vehicle and double-output asynchronous traction motor thereof

Abstract

The invention discloses a dual-output asynchronous traction motor, which comprises a motor base used for being connected with a box body of a first gear box positioned on a first side of the motor base and a box body of a second gear box positioned on a second side of the motor base in a matching way; and a rotor rotating shaft which is arranged in the motor base, used for driving the first gear box and the second gear box to operate and used for being connected with a coupler of the first gear box and a coupler of the second gear box. The invention further discloses an electric vehicle comprising the dual-output asynchronous traction motor. The dual-output asynchronous traction motor is simple, compact and reasonable in structure, the assembly difficulty of the motor can be greatly reduced, end covers are not arranged at the two ends of the motor base, meanwhile, the motor adopts a dual-output structure without bearing support, the length of the motor is effectively shortened, the weight of the motor is reduced, the motor maintenance probability is reduced, and the cost of the whole vehicle can be saved.

Description

technical field [0001] The invention relates to the technical field of motor assembly, in particular to a dual-output asynchronous traction motor. The invention also relates to an electric car with the dual-output asynchronous traction motor. Background technique [0002] At present, the external structure of asynchronous traction motors for trams includes machine bases, front end covers, and rear end covers. The front end covers and rear end covers are generally cast iron parts, which occupy a large space, are heavy, and are expensive; at the same time, there were Most of the asynchronous traction motors used in tramcars have only one output end, and one car body bogie needs to be equipped with two traction motors, which are expensive and complicated to install; the bearings are installed on the rotor shaft and the front and rear end covers to provide the motor rotor radial and axial constraints, and transmit torque, but the assembly process is more complicated, and the be...

AI Technical Summary

Problems solved by technology

[0002] At present, the external structure of asynchronous traction motors for trams includes machine bases, front end covers, and rear end covers. The front end covers and rear end covers are generally cast iron parts, which occupy a large space, are heavy, and are expensive; at the same time, there were Most of the asynchronous traction motors used in tramcars have only one output end, and one car body bogie needs to be equipped with two traction motors, which are expensive and complicated to install; the bearings are installed on the rotor shaft and the front and rear end covers to provide the motor rotor radial and axial constraints, and transmit torque, but the assembly process is more complicated, and the bearing is a vulnerable part, which needs to be checked and replaced regularly, which increases the maintenance cost; at the same time, the heat dissipation system of the motor is mostly composed of the stator, the internal air duct of the rotor, The fan at the tail of the motor and the rear end cover are composed of a fan inside, which violates the energy-saving concept of the whole machine and reduces the power of the motor, and the ventilation holes of the motor shell and the internal air duct are easy to enter sundries, which increases the cleaning of the motor frequency of maintenance

[0003] Therefore, how to avoid the difficulty of meeting the application requirements of electric vehicles due to the complicated structure and heavy weight of traditional motors is a technical problem that those skilled in the art need to solve at present.

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