Load-sensing-controlled hydraulic system
A load-sensitive control and hydraulic system technology, applied in fluid pressure actuators, servo motors, mechanical equipment, etc., can solve the problems that the whole machine cannot be adjusted, the output force and the working speed of the working device cannot be adjusted.
Inactive Publication Date: 2014-12-03
XUZHOU WUYANG TECH
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Problems solved by technology
[0002] The hydraulic system of most rock scrapers adopts quantitative pump system control technology. During the working process, when encountering different working conditions, the hydraulic system cannot adjust the output force and the working speed of the working device according to the change of the load of the working device. It cannot be adjusted in time according to different load conditions during work
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Embodiment Construction
[0008] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0009] like figure 1 As shown, a load sensitive control hydraulic system includes variable pump 1, quantitative pump 1 2, quantitative pump 2 3, pilot control valve group 5, six-way multi-way valve 6, triple multi-way valve 7, pilot control handle 8 , pilot control pedal 9, motor 10, main working device 11, auxiliary working device 12 and LS oil port 13, motor 10 is connected to variable pump 1, quantitative pump 1, quantitative pump 2 3, and variable pump 1 outputs pressure oil through the connection The pipeline is input to the main working device 11 through the six-way multi-way valve 6; the pressure oil output from the quantitative pump 1 is input to the auxiliary working device 12 through the connecting pipeline through the triple multi-way valve 7; the pressure oil output from the quantitative pump 2 3 is through the connecting pipe The road is input t...
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The invention discloses a load-sensing-controlled hydraulic system. The system adopts the structure that a motor (10) is connected with a variable capacity pump (1), a dosing pump I (2) and a dosing pump II (3); pressure oil output by the variable capacity pump passes a six-link multiway valve (6) through connection pipelines to be input into a main work device (11); the pressure oil output by the dosing pump I passes a triple multiway valve (7) through the connection pipelines to be input into an auxiliary working device (12); the pressure oil output by the dosing pump II passes a pilot control valve group (5) through a connection pipeline to be input into a pilot control handle (8) and a pilot control pedal (9), and then is connected to the six-link multiway valve through the connection pipelines; a pressure change signal of the main work device (11) passes an LS oil opening to be transmitted to the variable capacity pump through the connection pipeline. By the adoption of the system, the change of load born by the main work device can be detected, and the variable capacity pump is used for adjusting power output and working velocity, so that a complete machine can adapt to different loading conditions during working.
Description
technical field [0001] The invention relates to a hydraulic system, in particular to a load sensitive control hydraulic system, which belongs to the technical field of hydraulic control. Background technique [0002] The hydraulic system of most rock scrapers adopts quantitative pump system control technology. During the working process, when encountering different working conditions, the hydraulic system cannot adjust the output force and the working speed of the working device according to the change of the load of the working device. It cannot be adjusted in time according to different load conditions during work. Contents of the invention [0003] Aiming at the problems existing in the above-mentioned prior art, the object of the present invention is to provide a hydraulic system with load sensitive control, which can detect the change of the load borne by the working device, and change the output flow by the variable pump according to the difference of the load, and a...
Claims
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IPC IPC(8): F15B11/17
Inventor 侯友夫
Owner XUZHOU WUYANG TECH