General digital electro-hydraulic pressure control module
A pressure control, digital electro-hydraulic technology, used in fluid pressure actuation devices, servo motor components, mechanical equipment, etc., can solve the problem of quantization errors and transmission noise affecting control accuracy, complex structure and function of proportional amplifiers, and reduce work reliability. and other problems, to achieve the effect of large continuous pressure regulation range, simple digital electronic control amplifier line for driving high-speed switching valve, and improved work efficiency
Active Publication Date: 2009-07-22
HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED
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Problems solved by technology
[0004] (1) The essential problem of the solenoid valve is retained: this valve must be used together with the supporting electronic control proportional amplifier, and the structure and function of this proportional amplifier are relatively complicated, so the investment cost is correspondingly increased, and the working cost is reduced at the same time. reliability;
[0005] (2) The pressure regulation range is small, the control accuracy is not high, the cost is high, and the energy consumption is large;
[0006] (3) The signal connection with the microprocessor requires a dedicated D / A interface, which increases the manufacturing cost and makes the structure complex, and the quantization error and transfer noise will affect the control accuracy
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[0016] see figure 1 ~Figure 4, this general digital electro-hydraulic pressure control module is composed of a pressure reducing valve, 1, a high-speed switch type digital solenoid valve 2, and a main pressure regulating valve 3 closed-loop connection. The system hydraulic pressure 4 is the hydraulic pump 5 output connected to the pressure reducing valve input The port is the oil inlet 9, the oil drain port of the pressure reducing valve is 11, the output port of the pressure reducing valve is the oil outlet 10, which is connected to the oil inlet 6 of the high-speed switch type digital solenoid valve 2, and the return port of the high speed switch type digital solenoid valve 2 The oil port is 7, the control port 8 of the high-speed switch type digital solenoid valve 2 is connected to the control port 12 of the main pressure regulating valve 3, the oil drain port of the main pressure regulating valve 3 is 13, and the oil inlet port 14 of the main pressure regulating valve 3 Co...
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A general-purpose digital electro-hydraulic pressure control module, which is composed of a pressure reducing valve, a high-speed switch type digital solenoid valve, and a main pressure regulating valve closed-loop connection. The oil inlet of the digital solenoid valve and the control port of the high-speed switching digital solenoid valve are connected to the control port of the main pressure regulating valve, and the oil inlet of the main pressure regulating valve is connected to the oil inlet of the system hydraulic pressure and the pressure reducing valve. The invention has the advantages of simple structure, high efficiency, reliability, economy and practicality, large continuous pressure regulation range, low energy consumption, high precision and good technical performance.
Description
Technical field: [0001] The invention relates to a hydraulic control device, in particular to a general digital electro-hydraulic pressure control module. Background technique: [0002] Compared with mechanical transmission, electric transmission, etc., hydraulic transmission has the advantages of compact structure, large transmission force, precise positioning, smooth movement, easy automatic control, good lubrication of parts, long life, etc. Therefore, hydraulic transmission is widely used in the machinery industry , metallurgical industry, petroleum industry, engineering construction, shipbuilding, aviation, military, aerospace and other industrial sectors. In recent years, the combination of hydraulic transmission and electronic technology has been deepened step by step. Today, hydraulic transmission has been firmly ranked among various transmission methods in the occasion of transmitting as much power as possible in as small a space as possible and meeting precise cont...
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IPC IPC(8): F15B13/00
Inventor 周云山刘金刚
Owner HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED