Load Sensing Hydraulic System
A load-sensing, hydraulic system technology, applied in fluid pressure actuators, servo motors, servo motor components, etc., can solve problems such as poor adaptability, and achieve the effect of improving adaptability
Active Publication Date: 2022-01-11
广西中源机械有限公司 +1
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a load-sensitive hydraulic system for the poor adaptability of the existing load-sensitive hydraulic system due to changes in working conditions on the machine, so that the system can be applied to machines and adapt to various working conditions. conditions, improve the adaptability of the hydraulic system in the machine
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[0010] The specific implementation will be described below in conjunction with the accompanying drawings.
[0011] like figure 2 Gravel, the load-sensing hydraulic system in the present invention includes a load-sensing variable pump 1, a load-sensing control valve 2, a hydraulic actuator 3, an electromagnetic control differential pressure reducing valve 4, the working oil port of the load-sensing control valve 2 and the hydraulic actuator Component 3 is connected, and the hydraulic actuator 3 is usually a hydraulic cylinder or a hydraulic motor. The oil outlet (port P) of the load sensing variable pump 1 is connected to the oil inlet port (port P1) of the load sensing control valve 2, and the electromagnetically controlled differential pressure reducing valve 4 consists of a two-position three-way solenoid valve 41 and a differential pressure reducing valve 42, the first oil port of the two-position three-way solenoid valve 41 is connected to the load feedback port (LS1 por...
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The invention relates to a load-sensitive hydraulic system. In order to solve the problem that the existing load-sensitive hydraulic system has poor adaptability on machines due to changes in working conditions, a load-sensitive hydraulic system is provided. The system includes a two-position three-way solenoid valve and a fixed position. Differential pressure reducing valve, the first oil port of the two-position three-way solenoid valve is connected to the load feedback port of the load-sensitive control valve, the third oil port is connected to the control port of the flow control valve on the load-sensitive variable pump, and the second oil port is fixed The differential pressure reducing valve is connected to the control port of the flow control valve on the load-sensitive variable pump, and the first oil port of the two-position three-way solenoid valve is connected to the second oil port or the third oil port. The invention controls the load feedback pressure transmitted by the load-sensitive control valve, so that in different working conditions, the valve port opening of the load-sensitive control valve is the same, but the flow rate output by the load-sensitive variable pump is different, so that the hydraulic system and The corresponding working conditions are more suitable for matching, improving the adaptability of the machine to different working conditions.
Description
Technical field [0001] The present invention relates to a hydraulic system, and more particularly to a load-sensitive hydraulic system. Background technique [0002] The load-sensitive hydraulic system is mainly composed of a load-sensitive variable pump 1, a load-sensitive control valve 2 and a hydraulic actuator 3. In this system, the outlet of the load-sensitive variable pump is connected to the inlet of the load-sensitive control valve, and the load of the load-sensitive control valve The feedback port is connected to the control port of the flow control valve 11 on the load-sensitive variable pump 1. [0003] The load-sensitive hydraulic system controls the flow output of the load-sensitive variable pump through the valve port opening of the load-sensitive control valve. The larger the valve port opening, the greater the pump output flow. On the contrary, the output flow decreases. Its working principle is as follows figure 1 As shown, the outlet (P port) of the load-s...
Claims
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IPC IPC(8): F15B11/08F15B13/04
CPCF15B11/08F15B13/04F15B2211/20546
Inventor 王宜前
Owner 广西中源机械有限公司