Pressure compensation throttle control system for oil return path of working device of emergency rescue vehicle
A technology of pressure compensation and working device, which is applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc., can solve problems such as difficult maintenance and complicated processing, and achieve good anti-flow saturation characteristics and flow distribution, Effect of reducing acceleration motion and improving anti-flow saturation characteristics
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[0020] The specific implementation of the present invention will be further described below with reference to the drawings and a specific embodiment of a hydraulic system of an emergency rescue vehicle working device.
[0021] The present invention is an emergency rescue vehicle working device return line pressure compensation throttling control system, and its detailed dual hydraulic schematic diagram is as follows figure 1 As shown, the system includes a pump source, a first joint valve group, a second joint valve group, an oil supply passage P, an oil return passage T, and a load-sensitive oil passage LS;
[0022] The pump source includes a negative flow control pump 1, a main constant pressure differential valve 4, a main relief valve 2 and a main electric proportional two-position two-way valve 3; the outlet of the negative flow control pump 1 is connected to the inlet of the main relief valve 2 and Oil supply passage P; the outlet of the main relief valve 2 is directly connect...
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