Hydraulic steering control system for multi-axle emergency rescue vehicle with active suspension
An emergency rescue and active suspension technology, applied in the direction of power steering mechanism, fluid pressure actuation system components, vehicle components, etc., can solve the problems of rising center of gravity, sudden pressure change, affecting vehicle driving safety, etc., to improve steering safety , the effect of simple system structure
Active Publication Date: 2020-05-15
YANSHAN UNIV
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Problems solved by technology
The patent only proposes to maintain a stable body posture when the vehicle is turning, and does not limit the displacement of the active suspension actuator and the pressure of the steering cylinder, which will cause problems such as a rise in the center of gravity and a sudden change in pressure, which will affect the driving safety of the vehicle
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] The purpose of the present invention is to provide a multi-axle emergency rescue vehicle hydraulic steering control system with active suspension, which realizes the priority of oil supply to the steering unit when the multi-axle emergency rescue vehicle is turning, controls the priority steering action of the multi-axle vehicle, and improves the multi-axle emergency rescue vehicle. Axis vehicle steering safety, while the system structure is simple.
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The invention discloses a multi-axle emergency rescue vehicle hydraulic steering control system with active suspension, and relates to the technical field of vehicle steering. The system comprises an oil supply loop, a steering unit, a suspension unit, a steering oil supply port, a suspension oil supply port, a steering oil return port and a suspension oil return port; a suspension variable pump is connected with the steering unit and the suspension unit through a steering priority valve; two oil outlets of the steering priority valve are connected with the suspension oil supply port and the steering oil supply port; a non-spring cavity of the steering priority valve is connected with the steering oil supply port; when a vehicle is steered, the displacement of a valve element is adjusted through overcoming the spring force of the steering priority valve by the load pressure of steering; the suspension variable pump is controlled to supply oil to the steering unit preferentially; and the preferential steering action of the multi-axle vehicle is controlled, so that the steering safety of the multi-axle vehicle is improved, and meanwhile, the system structure is simple.
Description
technical field [0001] The invention relates to the technical field of vehicle steering, in particular to a hydraulic steering control system for a multi-axle emergency rescue vehicle with active suspension. Background technique [0002] Emergency rescue vehicles have the characteristics of heavy load, all-wheel steering and on-board precision instruments. When driving off-road on complex roads, the vehicles are required to have good handling stability, driving comfort and steering safety. In order to meet the above performance requirements, the emergency rescue vehicle adopts an active suspension system, which adjusts the displacement of the suspension actuator in a timely manner according to the vehicle movement and road conditions, so that the posture of the vehicle body remains stable, and the driving comfort and ride comfort of the vehicle are improved. The steering system mostly adopts multi-axis steering technology, which reduces the turning radius and sideslip of the...
Claims
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IPC IPC(8): F15B11/20F15B13/06F15B21/041B62D5/07B62D5/30
CPCB62D5/075B62D5/30F15B11/205F15B13/06F15B21/041F15B2211/20546
Inventor 巩明德王昕赵丁选孙亚南
Owner YANSHAN UNIV