Full-hydraulic multi-wheel independent-drive traction balance control system

Abstract

The invention relates to a full-hydraulic wheel multi-motor independent-drive system, in particular to the application shunt and hydraulic resistance control technology to realize a system for traction balance drive control for each wheel of a full-hydraulic vehicle. A full-hydraulic multi-wheel independent-drive traction balance control system comprises an engine, a duplex variable piston pump, a manual pilot valve, an electromagnetic reversing valve and in-wheel hydraulic motors; the hydraulic elements are connected through hydraulic pipelines; the system is characterized by further comprising a shunt (5) and a throttling device (4); the shunt (5) is fixed on a vehicle frame; the inlet of a hydraulic loop is connected with the duplex variable piston pump (9), and the outlet is connected with the in-wheel hydraulic motors (1) on one side through the electromagnetic reversing valve (3) respectively; and the throttling device (4) is installed between adjacent in-wheel hydraulic motors (1) at the outlet of the shunt (5).

Description

technical field [0001] The invention relates to a full-hydraulic wheel-side multi-motor independent drive system, in particular to a system that uses a flow divider and hydraulic resistance control technology (throttle device) to realize the balanced drive control of the traction force of each wheel of a full-hydraulic vehicle. Background technique [0002] The mobile machinery with a good hydraulic drive system, under the condition of using a smaller power engine, has improved productivity and reduced fuel consumption compared with purely mechanical transmission and hydraulic transmission models, and the labor intensity of operators has also been greatly reduced; Compared with the same power mechanical transmission transmission device, it is lighter in weight and smaller in size, and has a large transmission range, which can realize stepless transmission; flexible installation layout, easy to change the driving system; and can use the hydraulic transmission system to achieve...

AI Technical Summary

Problems solved by technology

Although the synchronous driving method can increase the traction force of the vehicle when driving, when the vehicle is in a field environment with complex working conditions, it will cause the vehicle to walk on uneven roads, because the paths traveled by each wheel at the same time are different. The same, causing one or several wheels to slip, reducing the traction efficiency of the vehicle

[0004] There are also cumbersome hydraulic servo valve control methods, such as the T4 hydraulically driven and controlled all-round medium-sized robot developed by the Independent Intelligence Center of the University of Utah in the United States. It is powered by a variable pump and controls four robots through eight hydraulic servo valves. One drive motor and four steering motors, although they can accurately control the speed and torque of each wheel of the vehicle, the control mechanism is very complicated, and the cost is considerable, and it is not suitable for machinery working in complex outdoor environments.

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