Crane and its load sensitive hydraulic control system
A hydraulic control system and load-sensitive technology, which is applied in the direction of mechanical equipment, load suspension components, fluid pressure actuators, etc., can solve the problem of oscillation in dynamic characteristics, affecting crane lifting performance, fretting safety, and poor stability and other problems to achieve the effect of eliminating the peak value, improving the pilot oil source and improving the working stability
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[0025] The core of the present invention is to provide a load-sensitive hydraulic control system to eliminate the influence of the load pressure fluctuation peak value and effectively reduce the pressure fluctuation of the feedback oil circuit, so as to realize the pressure and flow pulsation of the pump output is small, and the action of each actuator has no jitter .
[0026] The present embodiment will be described in detail below in conjunction with the accompanying drawings.
[0027] See figure 2 , which is a working principle diagram of the load-sensing hydraulic control system in this embodiment.
[0028] The load-sensing hydraulic control system includes a multi-way directional control valve 1 , a load-sensing pump 2 with a load-sensing valve 21 , a damping valve 3 , an oil tank 4 and other main functional components. Among them, the liquid inlet P of the multi-way directional control valve 1 communicates with the liquid outlet A of the load-sensing pump 2, and its d...
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