A double-cylinder automatic control valve
A technology of automatic control valves and hydraulic control check valves, which is applied in the field of hydraulic valves, can solve the problems of increased labor intensity, complex structure, and high cost, and achieve the effects of high automation, low cost, and simple structure
Active Publication Date: 2020-07-03
JIANGSU TONGDA MARINE TYPE VALVE & PUMP
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Problems solved by technology
The manual control type is that the tractor driver directly manipulates the manual slide valve to control the oil circuit of the lifting cylinder to lift the two-way plow first, and then manipulates the manual slide valve to change direction to control the flip cylinder to start flipping, and the plow moves the fork in the middle position to drive a The rotary valve converts the oil circuit of the oil cylinder to complete the turning and turning, and then manually manipulates the slide valve to control the extension of the lifting cylinder. When the turning control valve is turning, the tractor driver also controls the steering wheel and lifting the plow. The overturn control valve is very tense and busy to complete these actions in a short time, and the labor intensity increases; at the same time, three control spool valves (one spool valve for lifting cylinder control, one spool valve for overturn control) are required. Valve two) not only complex structure, high cost
Method used
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[0018] see Figure 1-2 , the present invention provides a double-cylinder automatic control valve, which is provided with a P oil port, a T oil port, a V1 working oil port, a V2 working oil port, a C1 working oil port, and a C2 working oil port, including a first reversing valve 1, The second reversing valve 2, the first relief valve 3, the second relief valve 4, and the hydraulic control check valve 5, the first reversing valve 1 and the second reversing valve 2 are two-position four-way reversing valves. The P1 port of the first reversing valve 1 is divided into two paths, one path communicates with the P port, and the other path communicates with the right control chamber of the first reversing valve 1. The P1 oil port of a reversing valve 1 is also communicated with the left control chamber of the first reversing valve 1 through the first damper 6; the T1 oil port of the first reversing valve 1 is connected with the T oil port The P2 oil port of the second reversing valve...
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The invention discloses a double-cylinder automatic control valve. The double-cylinder automatic control valve is provided with an oil port P, an oil port T, a working oil port V1, a working oil portV2, a working oil port C1 and a working oil port C2 and comprises a first reversing valve, a second reversing valve, a first overflow valve, a second overflow valve and a hydraulic control one-way valve. An oil port P1 of the first reversing valve is divided into two paths, one path communicates with the oil port P, and the other path communicates with a right control cavity of the first reversingvalve. The oil port P1 of the first reversing valve further communicates with a left control cavity of the first reversing valve through a first damper. An oil port T1 of the first reversing valve communicates with the oil port T. The automatic control hydraulic valve is simple in structure and low in cost, control of lifting and overturning can be automatically and orderly achieved only throughoil supply, manual operation of a driver is not needed, and the automation degree is high.
Description
technical field [0001] The invention relates to the technical field of hydraulic valves, in particular to a double-cylinder automatic control valve. Background technique [0002] In recent years, most areas of my country have begun to promote the application of hydraulic turning plows. Using the reversing plow for plowing has the advantages of no opening and closing ridges, high production efficiency, and energy saving. The hydraulic reversing plow uses the hydraulic system of the tractor to control the left and right plow bodies to operate alternately, so as to achieve the purpose of no opening and closing ridges. At present, the control mode of single oil cylinder is generally adopted for small turning plows, while the control mode of double oil cylinders is adopted for large turning plows. The hydraulic tilting plow controlled by double cylinders mainly includes a lifting cylinder and a turning cylinder. The two cylinders are controlled by the hydraulic system of the tr...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/024
Inventor 邵立坤
Owner JIANGSU TONGDA MARINE TYPE VALVE & PUMP