Hydraulic hub motor assisted differential power steering

A power steering, hydraulic wheel technology, applied in the direction of fluid steering mechanism, control device, transportation and packaging, etc., can solve the problems of the hydraulic power steering system unable to actively control the lightness and safety of steering assistance, and achieve improved safety and reliability. Reliability, high specific power, and the effect of ensuring safety

CN107176204BInactive Publication Date: 2018-05-04JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-05-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a hydraulic hub motor assisting differential motion power-assisted steering system aims to solve the problems that a traditional hydraulic power-assisted steering system cannot conduct active control, and power-assisted steering portability and safety under the failure condition cannot be ensured only through the traditional hydraulic power-assisted steering system. A hydraulic control unit achieves diversified working modes such as the traditional direct movement mode, the steering hydraulic cylinder power-assisted mode, the direct movement pump assisting driving mode, the steering uniting power-assisted mode and the steering hydraulic motor power-assisted model by controlling valve set element movement according to the demands of a driver and the travelling states of a vehicle. The system provided by the invention can continue to provide steering assisted power under the condition of failure of the traditional hydraulic power-assisted steering system so as to ensure portability and safety of the power-assisted steering system; and through the hydraulic control unit, the power-assisted steering system is actively controlled, the power-assisted characteristic is optimized, and the performance of the power-assisted steering system is effectively improved.
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Description

technical field

[0001] The present invention relates to differential power steering systems, and more particularly, the present invention relates to hydraulic hub motor assisted differential power steering systems. Background technique

[0002] Heavy-duty commercial vehicles often run on roads with low adhesion coefficients such as mud, water, and sand, and the driving conditions of the vehicles are complex and changeable, so it is easy to cause insufficient driving force and drive wheel slippage. The use of hydraulic auxiliary drive technology can solve this problem. By installing a hydraulic hub motor in the front wheel hub of the vehicle, it can provide auxiliary drive force to the vehicle in a timely manner, making the vehicle change from a traditional rear-wheel drive vehicle to a four-wheel drive vehicle. At the same time, due to the heavy weight and complex road conditions of heavy-duty commercial vehicles, higher requirements are placed on the portability, safety and...

Examples

Embodiment Construction

[0023] The present invention is described in detail below in conjunction with accompanying drawing:

[0024] refer to figure 1 , the hydraulic hub motor assisted differential power steering system of the present invention includes a hydraulic auxiliary drive module I, a differential power steering module II, a hydraulic control unit III, a power take-off device 1, a power input device 2, and a hydraulic hub motor 3 , No. 1 wheel 4, No. 2 hydraulic hub motor 5, No. 2 wheel 6, steering mechanical transmission mechanism 7 and oil storage tank 8. The power take-off device 1 can be one or more sets of transmission gears, and the installation position of the power take-off device 1 can be the power output end of the engine or the power output end of the transmission according to the actual situation. The power take-off device 1 and the power input device 2 are connected by a universal joint or a spline pair, and the power input device 2 is coaxially connected with the power input p...