All-wheel drive type electric motor coach steering drive axle

Abstract

The invention relates to the technical field of electric motor coach axles, and in particular to an all-wheel drive electric motor coach steering drive axle. An inner hole of each hub is fixed to theouter side face of the steering knuckle hollow shaft through a deep groove ball bearing. A first through hole is transversely formed in the steering knuckle hollow shaft, a planet carrier is fixed tothe end face of the steering knuckle hollow shaft, a second through hole communicated with the first through hole is transversely formed in the planet carrier, a transmission half shaft outer sectionis arranged in the first through hole and the second through hole, and the end, extending out of the second through hole, of the transmission half shaft outer section is connected with a planetary gear reducer. Distributed wheel-side drive is adopted, a set of steering mechanism is arranged, large-space low-floor can be achieved while the double-transverse-arm independent suspension is adopted, and arrangement of the chassis is optimized. By the adoption of the structure, the immature distributed driving mode of a hub motor is replaced, the defect that a double-wishbone independent suspensionis difficult to arrange in space is overcome, and all-wheel driving and all-wheel steering of the passenger car can be achieved.

Description

technical field [0001] The invention relates to the technical field of electric passenger car axles, in particular to an all-wheel drive electric passenger car steering drive axle. Background technique [0002] At present, the chassis technology of large electric buses is based on the transformation of the traditional fuel vehicle chassis. In order to better adapt to the traditional fuel vehicle chassis, the rear drive is generally used in the design, the front axle is the steering axle, and the rear axle is the drive. bridge; and the design of the rear axle is generally only to connect the input shaft at the front end of the main reducer directly to the motor, and the motor is installed on the frame, that is, the single-motor drive mode. The axis of the motor is generally placed along the longitudinal direction of the bus. The curved surface gear reducer and the differential transmit the power to the left and right half shafts; in order to effectively drive the passenger ca...

AI Technical Summary

Problems solved by technology

The controllability and comfort of the independent suspension are better than that of the non-independent suspension, but the space layout is difficult due to the complex structure. On the side, leave a central position to arrange the body. In the case of a large motor size, if the half-shaft is arranged in the traditional form, the half-shaft structure cannot meet the car's up and down travel and driving requirements, and it is difficult to achieve a low floor. It is used in passenger cars. less

[0005] Nowadays, in the design of the latest electric bus, in order to reduce the turning radius and improve the maneuverability, a structure with all-wheel steering has appeared, but this structure still adopts the steering method of the traditional fuel vehicle, that is, the steering power source is on the front axle. , a mechanical steering link is set between the front axle and the rear axle, and the rear axle assists the steering. The structure is relatively complicated, and there are many connecting rods for steering, and the weight and volume are relatively large.

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