Speed reduction type hub driving system with function of power shock absorption

Abstract

The invention discloses a speed reduction type hub driving system with a function of power shock absorption. Power is outputted to a primary speed-reduction small cylindrical gear by a motor through a motor output shaft, the primary speed-reduction small cylindrical gear is meshed with a primary speed-reduction large cylindrical gear to transmit power, the primary speed-reduction large cylindrical gear is fixedly connected with a secondary speed-reduction small bevel gear, the central axis of the primary speed-reduction large cylindrical gear and the central axis of the secondary speed-reduction small bevel gear are coaxial, the secondary speed-reduction small bevel gear is meshed with a secondary speed-reduction large bevel gear to output power to a half shaft, an external spline is arranged on the half shaft at a section extending into a hub, and power is transmitted to a rim through the hub. The motor is suspended to a speed reduction box, a knuckle and a guide sleeve through a power shock absorber damping element and a power shock absorber elastic element, wherein the speed reduction box, the knuckle and the guide sleeve are connected together. The motor further serves as a power shock absorber mass besides outputting power, and vertical performance of a vehicle can be improved by properly adjusting parameters of the power shock absorber damping element and the power shock absorber elastic element. The speed reduction type hub driving system has the advantages that the motor weight is converted from unsprung weight into power shock absorber weight, and the speed reduction type hub driving system is low in production cost, high in transmission efficiency and beneficial to development of advantages of the high-speed motor which is high in power and power intensity.

Description

Technical field [0001] The invention relates to the field of electric vehicle chassis and transmission, in particular to a decelerating wheel drive system with dynamic vibration absorption. Background technique [0002] At present, the main structural feature of the wheel-side electric drive system represented by electric wheels is that the drive motor is installed in or near the drive wheel, which has the advantages of short drive transmission chain, efficient transmission, and compact structure. At the same time, the torque of each driving wheel of the wheel drive system can be independently controlled. The wheel motor is not only the information unit of the car, but also the quick response control execution unit, which is conducive to the realization of high-performance control functions that are difficult to achieve in traditional cars, thereby improving the harshness Driving performance under road conditions. [0003] However, in the general wheel drive system, due to the int...

AI Technical Summary

Problems solved by technology

However, the traditional dynamic shock absorber method needs to suspend an additional mass block on the wheel, which takes up space and increases the curb weight of the vehicle, thereby reducing the driving mileage

In addition, affected by the above factors, the quality of the installed dynamic vibration absorber should not be too large, so the vibration absorption effect is limited

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