Mechanical hydraulic and active differential grouping hybrid steering system for multi-axle hybrid vehicle

Abstract

The invention discloses a mechanical hydraulic and active differential grouping hybrid steering system for a multi-axle hybrid vehicle. The system adopts mechanical control hydraulic power-assisted steering of first and second axle steering wheels and active differential steering of fifth and sixth axle electronically-controlled wheel hub motors, and the system is composed of a rear axle electronically-controlled active differential steering system, a steering operation mechanism 1, a steering transmission mechanism 2, a steering hydraulic control system 3, a steering controller, a display system 4 and an angle sensor device 5; a rear wheel set and a front wheel set rotate reversely during low-speed turning, the turning radius of the vehicle can be reduced, and the maneuverability of the vehicle is improved; the front wheel set has a steering function at a high speed, the rear wheel set has no steering function, the stability of the vehicle during high-speed turning and accelerated overtaking is improved, turning movement generated when the vehicle turns at the high speed is reduced, steering of the rear wheel set is automatically recognized by the steering controller without the intervention of a driver, and the vehicle is operated more easily.

Description

technical field [0001] The invention relates to the technical field of automobile steering, in particular to a mechanical hydraulic and active differential grouping hybrid steering system of a multi-axis hybrid vehicle. Background technique [0002] With the rapid development of the automobile industry, environmental pollution and energy issues have become increasingly prominent, so the research and development of heavy-duty special multi-axle hybrid vehicles has also received extensive attention. The multi-axle hybrid special off-road vehicle is driven by five axles 10×10, of which the first, second, fifth, and sixth axles are steering axles, the first three axles adopt a conventional internal combustion engine drive system, and the rear two axles adopt a new wheel hub motor drive system. It can operate independently or coordinately at the same time. Compared with traditional fuel vehicles, hybrid vehicles have certain improvements in energy consumption and exhaust emission...

AI Technical Summary

Problems solved by technology

These steering systems have heavy weight, low degree of space utilization, and poor handling stability and steering flexibility, which reduces the safety of the steering system

The hub motor drives the wheel to realize the differential steering function by controlling the torque and speed of the hub motor. There is motor failure in the wheel, how to ensure the stability of the vehicle in the case of motor failure needs to be solved

At the same time, multi-axle vehicles are prone to flick when driving at high speed, which increases wheel wear and danger. How to coordinate the safety and flexibility of the vehicle

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