Hydraulic control system for synchronously lifting and lowering oil-gas suspension oil cylinders

Abstract

The invention discloses a hydraulic control system for synchronously lifting and lowering oil-gas suspension oil cylinders. The hydraulic control system comprises a power unit, an oil inlet way, an oil return way, multiple suspension valve sets, and oil cylinders corresponding to the multiple suspension valve sets one to one; the power unit comprises an oil tank, an oil sucking filter, an oil return filter, a gear pump, a motor and a one-way valve; one side in the oil tank communicates with one end of the oil inlet way; the oil inlet way is provided with the oil sucking filter, the gear pump and the one-way valve in sequence; the gear pump is connected with the motor; the other side in the oil tank communicates with one end of the oil return way; the oil return filter is arranged on the oil return way; and the suspension valve sets comprise three-position four-way electromagnetic proportional reversing valves, hydraulic-controlled one-way valves and pressure sensors. The hydraulic control system has the beneficial effects of effectively shortening the research period, saving the research cost, improving the reliability and guaranteeing higher reliability and interchangeability.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a hydraulic control system for synchronous lifting of oil-air suspension cylinders. Background technique [0002] The oil-pneumatic suspension system is increasingly used in construction vehicles, especially medium and heavy construction vehicles, which consists of an accumulator as a flexible hydraulic component, a suspension cylinder, and a control valve group that controls the attitude adjustment of the suspension cylinder. The oil-pneumatic suspension system has excellent nonlinear elastic characteristics and good vibration damping performance, which can meet the ride comfort requirements of engineering vehicles to the greatest extent. Generally speaking, the oil-pneumatic suspension system has an automatic leveling function. Before driving, each suspension cylinder on the vehicle is extended or retracted to the same height position to maintain the posture balance o...

AI Technical Summary

Problems solved by technology

In order to continuously improve the performance of the suspension system, people need to continuously design and research the oil-air suspension system. However, at present, it generally takes a long time and cost to design and research the oil-air suspension system. At the same time, there is no Fully consider the use conditions of the vehicle, common mature and reliable parts and supporting manufacturers, and cannot guarantee that the system has high reliability and interchangeability

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