Hydraulic station

Abstract

The utility model discloses a hydraulic station which comprises a main air cylinder and a main oil cylinder which are linked. The main air cylinder comprises a reversing trigger device capable of sending out an air cylinder piston moving in-place signal of the main air cylinder and a main reversing valve for switching air inlet and air outlet of two air cylinder cavities of the main air cylinder according to the signal of the reversing trigger device. The hydraulic station further comprises an auxiliary air cylinder and an auxiliary oil cylinder which are in linkage. The auxiliary air cylinder comprises an auxiliary reversing valve, the auxiliary reversing valve can obtain valve element reversing in-place information of the main reversing valve, and air inlet and air outlet of two air cylinder cavities of the auxiliary air cylinder are switched according to the obtained information. An oil supply port of the auxiliary oil cylinder is connected with an oil supply port of the main oil cylinder in parallel. According to the hydraulic station, when oil supply of the main oil cylinder is stopped in the process that the main air cylinder drives the main oil cylinder to reverse, the auxiliary reversing valve controls the auxiliary air cylinder to drive the auxiliary oil cylinder to supply oil according to valve element reversing in-place information of the main reversing valve, and therefore continuous oil supply is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic station especially relates to a hydraulic station. BACKGROUND

[0002] The hydraulic station is a hydraulic device for supplying oil according to the required flow direction, pressure and flow rate, and is usually used in combination with a machine tool requiring hydraulic drive of an actuator.

[0003] Referring to Figure 1 , it is the structural schematic diagram of the hydraulic station provided in the prior art. As shown in the figure, the hydraulic station comprises: a linked main cylinder 1', an oil cylinder 2'; wherein, the two side cylinder end covers of the main cylinder 1' are respectively provided with a first reversing trigger device 3' and a second reversing trigger device 4', and meanwhile, the main cylinder 1' is communicated with a pneumatic control reversing valve 5', and the air source is connected with the air inlet of the first reversing trigger device 3', the second reversing trigger device 4' and the pneumatic control reversing valve 5' respectively; the A' working port of the pneumatic control reversing valve 5' is communicated with one side of the main cylinder 1', and the B' working port of the pneumatic control reversing valve 5' is communicated with the other side of the main cylinder 1'; the first reversing trigger device 3' and the pneumatic control reversing valve 5' are connected to control the pneumatic control reversing valve 5' to start the A' working port of the pneumatic control reversing valve 5' so as to make the A' working port of the pneumatic control reversing valve 5' communicated with the P' air inlet of the pneumatic control reversing valve 5'; the second reversing trigger device 4' and the pneumatic control reversing valve 5' are connected to control the pneumatic control reversing valve 5' to start the B' working port of the pneumatic control reversing valve 5' so as to make the B' working port of the pneumatic control reversing valve 5' communicated with the P' air inlet of the pneumatic control reversing valve 5'.

[0004] The working process of the above-mentioned hydraulic station is as follows: the pneumatic piston is located in the left side of the main cylinder 1', the first reversing trigger device 3' is triggered to open, the pneumatic control reversing valve 5' is pushed to reverse, the compressed air enters the main cylinder 1' from the A' working port, and enters the space on the left side of the pneumatic piston, thereby pushing the pneumatic piston to move rightward (the first reversing trigger device 3' resets to stop), and driving the oil cylinder piston in the oil cylinder 2' to move rightward; the pneumatic piston moves to the right side of the main cylinder 1', the second reversing trigger device 4' is triggered to open, the pneumatic control reversing valve 5' is pushed to reverse, the compressed air enters the main cylinder 1' from the B' working port, and enters the space on the right side of the pneumatic piston, thereby pushing the pneumatic piston to move leftward (the second reversing trigger device 4' resets to stop), and driving the oil cylinder piston in the oil cylinder 2' to move leftward, so that the hydraulic oil is in and out; the reciprocating movement of the main cylinder 1' forms the hydraulic output, when the set pressure is reached, the main cylinder 1' stops moving to keep the pressure constant, the main cylinder 1' keeps the pressure increasing state and stops moving, thereby no longer consuming the compressed air, and the energy consumption and heat generation are reduced compared with the traditional hydraulic station, and the energy saving purpose is achieved.

[0005] The hydraulic station can continuously supply oil. Technical content

[0006] The hydraulic station can continuously supply oil.

[0007] The hydraulic station can continuously supply oil.

[0008] In some embodiments, the two control ports of the auxiliary reversing valve are respectively communicated with the two working ports of the main reversing valve, or are respectively communicated with the two cylinder cavities of the main cylinder.

[0009] In some embodiments, the hydraulic station further comprises an auxiliary exhaust valve, the auxiliary exhaust valve has an exhaust port and two control ports, one control port of the auxiliary exhaust valve is simultaneously communicated with one cylinder cavity of the main cylinder, one working port of the main reversing valve, the other control port of the auxiliary exhaust valve is simultaneously communicated with the other cylinder cavity of the main cylinder, the other working port of the main reversing valve, and the exhaust port is communicated with the other cylinder cavity of the main cylinder and the outside when the one cylinder cavity of the main cylinder is inhaled.

[0010] In some embodiments, the two control ports of the auxiliary reversing valve are respectively communicated with the two control ports of the auxiliary exhaust valve.

[0011] In some embodiments, the two working ports of the auxiliary reversing valve are respectively communicated with the two cylinder cavities of the auxiliary cylinder, one control port of the auxiliary reversing valve is simultaneously communicated with one working port of the main reversing valve, one cylinder cavity of the main cylinder and one control port of the auxiliary exhaust valve, and the other control port of the auxiliary reversing valve is simultaneously communicated with the other working port of the main reversing valve, the other cylinder cavity of the main cylinder and the other control port of the auxiliary exhaust valve.

[0012] In some embodiments, when the spool of the main reversing valve is in the neutral state, the auxiliary exhaust valve exhausts the gas in the other cylinder cavity of the main cylinder, so that the cylinder piston of the main cylinder can move to the direction of the cylinder end cover of the other cylinder cavity under the action of the gas pressure in the one cylinder cavity, thereby triggering the reversing trigger device to trigger the spool of the main reversing valve to reverse, and switch to the state that the other cylinder cavity is in the state of air intake and the one cylinder cavity is in the state of air exhaust.

[0013] In some embodiments, the auxiliary cylinder and the auxiliary oil cylinder are at least two levels. The oil supply ports of the auxiliary oil cylinders at each level are connected in parallel with the oil supply port of the main oil cylinder. The auxiliary cylinder at each level includes an auxiliary reversing valve, wherein the auxiliary reversing valve of the auxiliary cylinder at the first level can obtain the information of the spool of the main reversing valve reversing to the position, and switch the air intake and air exhaust of the two cylinder cavities of the auxiliary cylinder at the first level according to the obtained information. The auxiliary reversing valve of the auxiliary cylinder at the non-first level can obtain the information of the spool of the auxiliary reversing valve of the auxiliary cylinder at the previous level reversing to the position, and switch the air intake and air exhaust of the two cylinder cavities of the auxiliary cylinder at the level according to the obtained information.

[0014] In some embodiments, the two control ports of the auxiliary reversing valve of the auxiliary cylinder at the second level are respectively connected with the two working ports of the auxiliary reversing valve of the auxiliary cylinder at the first level. Alternatively, the two control ports of the auxiliary reversing valve of the auxiliary cylinder at the second level are respectively connected with the two cylinder cavities of the auxiliary cylinder at the first level.

[0015] In some embodiments, the two control ports of the auxiliary reversing valve of the auxiliary cylinder at the third level are respectively connected with the two working ports of the auxiliary reversing valve of the auxiliary cylinder at the second level. Alternatively, the two control ports of the auxiliary reversing valve of the auxiliary cylinder at the third level are respectively connected with the two cylinder cavities of the auxiliary cylinder at the second level.

[0016] In some embodiments, the auxiliary reversing valves of the auxiliary cylinders at each level and the main reversing valve are supplied with air by the same air source.

[0017] According to the hydraulic station provided by the embodiment of the utility model, the auxiliary cylinder and the auxiliary oil cylinder are connected in linkage, the auxiliary cylinder includes the auxiliary reversing valve, the auxiliary reversing valve can obtain the information of the spool of the main reversing valve reversing to the position, and switch the air intake and air exhaust of the two cylinder cavities of the auxiliary cylinder according to the obtained information, the oil supply port of the auxiliary oil cylinder is connected in parallel with the oil supply port of the main oil cylinder, and the auxiliary reversing valve controls the auxiliary cylinder to drive the auxiliary oil cylinder to supply oil according to the information of the spool of the main reversing valve reversing to the position when the main oil cylinder stops supplying oil in the process of the main cylinder driving the main oil cylinder to reverse, so that continuous oil supply is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The structural schematic diagram of the hydraulic station provided in the prior art is shown in the figure.

[0020] Figure 2 The connection structure schematic diagram of the main oil cylinder, the main air cylinder, the reversing trigger device, the main reversing valve and the auxiliary exhaust valve in the hydraulic station provided in the embodiments of the present application is shown in the figure.

[0021] Figure 3 The connection structure schematic diagram of the main oil cylinder, the main air cylinder, the reversing trigger device, the main reversing valve, the auxiliary exhaust valve, the first-stage auxiliary oil cylinder, the first-stage auxiliary air cylinder, the first-stage auxiliary reversing valve, the second-stage auxiliary oil cylinder, the second-stage auxiliary air cylinder and the second-stage auxiliary reversing valve in the hydraulic station provided in the embodiments of the present application is shown in the figure.

[0022] Figure 4 The structural schematic diagram of the auxiliary exhaust valve in the hydraulic station provided in the embodiments of the present application is shown in the figure.

[0023] Figure 5 The connection structure schematic diagram of the first-stage auxiliary oil cylinder, the first-stage auxiliary air cylinder, the first-stage auxiliary reversing valve, the second-stage auxiliary oil cylinder, the second-stage auxiliary air cylinder, the second-stage auxiliary reversing valve, the third-stage auxiliary air cylinder and the third-stage auxiliary reversing valve in the hydraulic station provided in the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0025] Referring to Figures 2-5 The embodiments of the present application provide a hydraulic station, which comprises a main air cylinder 1 and a main oil cylinder 4 connected in linkage. The main air cylinder 1 comprises a reversing trigger device 2 capable of sending a signal of moving the cylinder piston of the main air cylinder to a position, and a main reversing valve 3 capable of switching the air inlet and exhaust of the two cylinder cavities of the main air cylinder according to the signal of the reversing trigger device.

[0026] The main cylinder 1 has a cylinder body, a first cylinder piston 101 and cylinder end covers, wherein the first cylinder piston 101 is slidable along the inner wall of the cylinder body and forms a gas seal with the inner wall of the cylinder body, and the cylinder end covers are arranged at both ends of the cylinder body to seal the cylinder body. The two sides of the first cylinder piston 101 are two cylinder cavities, and when the cylinder cavity on one side of the first cylinder piston 101 is supplied with gas, the cylinder cavity on the other side is exhausted, so that the first cylinder piston 101 moves back and forth between the two ends under the action of gas pressure. The first cylinder piston 101 and the first oil cylinder piston 401 of the main oil cylinder 4 are connected through the first linkage rod 5, and the first linkage rod 5 is slidably arranged in the cylinder end cover of the main cylinder 1 arranged near the main oil cylinder 4, so that the first cylinder piston 101 and the first oil cylinder piston 401 slide synchronously.

[0027] The reversing trigger device 2 is two, which are the first reversing trigger device 201 and the second reversing trigger device 202. The first reversing trigger device 201 and the second reversing trigger device 202 are arranged at both ends of the main cylinder 1 respectively to obtain whether the first cylinder piston 101 moves to the position of both ends, and can send corresponding moving-to-position signals when the first cylinder piston 101 moves to the position of both ends. The first reversing trigger device 201 and the second reversing trigger device 202 can both be mechanical valves, especially gas control valves, and at this time, the main reversing valve is a gas control reversing valve.

[0028] A gas control valve body of the first reversing trigger device 201 is provided with a first gas inlet E and a first gas outlet C, the first gas inlet E is communicated with the gas source 11, the first gas outlet C is communicated with the first control port Y1 of the main reversing valve 3, and a gas control valve spool is arranged in the gas control valve body and can move to the left under the action of pressure and move to the right under the action of elasticity. When the gas control valve spool moves to the left to the position, the first gas inlet E and the first gas outlet C are communicated, the starting block part of the gas control valve spool is protruded at the right end of the gas control valve body and arranged on the cylinder end cover at the left side of the first cylinder piston 101, and protruded in the cylinder cavity at the left side of the first cylinder piston 101. Under the above conditions, when the first cylinder piston 101 moves to the left to the position under the action of gas pressure, the first cylinder piston 101 touches the starting block of the gas control valve spool, the gas control valve spool moves to the left, until the first gas inlet E and the first gas outlet C are communicated, realizing the communication between the gas source 11 and the first control port Y1, so as to pressurize the gas in the first control port Y1. In the above process, whether the first cylinder piston 101 moves to the left to the position is obtained by judging whether the starting block part of the gas control valve spool is touched, and the moving-to-position signal is sent by pressurizing the gas in the first control port Y1.

[0029] The gas control valve body of the second reversing trigger device 202 is provided with a second air inlet F and a second air outlet D. The second air inlet F is communicated with the gas source 11, and the second air outlet D is communicated with the second control port Z1 of the main reversing valve 3. The gas control valve body is provided with a gas control valve spool which can move rightward under the action of pressure and move leftward under the action of elasticity. When the gas control valve spool moves rightward to the position, the second air inlet F and the second air outlet D are communicated. The starting block part of the gas control valve spool is protruded on the left end of the gas control valve body and is arranged on the cylinder end cover on the right side of the first cylinder piston 101 and is protruded in the cylinder cavity on the right side of the first cylinder piston 101. Under the above condition, when the first cylinder piston 101 moves rightward to the position under the action of pressure, the first cylinder piston 101 touches the starting block of the gas control valve spool, the gas control valve spool moves rightward, until the second air inlet F and the second air outlet D are communicated, the communication between the gas source 11 and the second control port Z1 is realized, so that the gas is pressurized into the second control port Z1. In the above process, whether the first cylinder piston 101 moves rightward to the position is obtained by judging whether the starting block part of the gas control valve spool is touched, and the signal of moving to the position is sent by pressurizing the gas into the second control port Z1.

[0030] The main reversing valve 3 is connected with the first reversing trigger device 201 and the second reversing trigger device 202, so as to switch the air inlet and air outlet of the two cylinder cavities of the main cylinder in turn according to the signals sent by the first reversing trigger device 201 and the second reversing trigger device 202. The main reversing valve can be a gas control reversing valve.

[0031] The air control reversing valve body of the main reversing valve 3 is provided with a first control port Y1, a second control port Z1, a first working port A1, a second working port B1, a third inlet port P1, a third exhaust port R11 and a fourth exhaust port R12. The first control port Y1 is in communication with the first exhaust port C of the first reversing trigger device 201, the second control port Z1 is in communication with the second exhaust port D of the second reversing trigger device 202, the first working port A1 is in communication with the cylinder cavity on the left side of the first cylinder piston 101, the second working port B1 is in communication with the cylinder cavity on the right side of the first cylinder piston 101, the third inlet port P1 is in communication with the gas source 11, and the air control reversing valve body is provided with an air control reversing valve spool which can move to the right under the action of the gas pressure in the first control port Y1 and move to the left under the action of the gas pressure in the second control port Z1. When the air control reversing valve spool moves to the right to the position, the first working port A1 is in communication with the third inlet port P1, and the second working port B1 is in communication with the fourth exhaust port R12. When the air control reversing valve spool moves to the left to the position, the second working port B1 is in communication with the third inlet port P1, and the first working port A1 is in communication with the third exhaust port R11. Under the above conditions, after the gas is pressurized in the first control port Y1, the air control reversing valve spool moves to the right until the first working port A1 is in communication with the third inlet port P1 to realize gas inlet, and the second working port B1 is in communication with the fourth exhaust port R12 to realize gas exhaust, so that the cylinder cavity on the left side of the first cylinder piston 101 is gas-inlet, and the cylinder cavity on the right side is gas-exhaust, and the first cylinder piston 101 moves to the right under the action of the gas pressure. After the gas is pressurized in the second control port Z1, the air control reversing valve spool moves to the left until the second working port B1 is in communication with the third inlet port P1 to realize gas inlet, and the first working port A1 is in communication with the third exhaust port R11 to realize gas exhaust, so that the cylinder cavity on the right side of the first cylinder piston 101 is gas-inlet, and the cylinder cavity on the left side is gas-exhaust, and the first cylinder piston 101 moves to the left under the action of the gas pressure. In the above process, the main reversing valve 3 switches the gas inlet and gas exhaust of the two cylinder cavities of the main cylinder in turn according to the pressurization of the gas in the first control port Y1 and the second control port Z1.

[0032] The hydraulic cylinder can further include an auxiliary exhaust valve 6, which has an exhaust port and two control ports. One control port of the auxiliary exhaust valve 6 is in communication with one cylinder cavity of the main cylinder 1 and one working port of the main reversing valve 3 at the same time, and the other control port of the auxiliary exhaust valve 6 is in communication with the other cylinder cavity of the main cylinder 1 and the other working port of the main reversing valve 3 at the same time. The exhaust port is in communication with the other cylinder cavity of the main cylinder 1 and the outside when the one cylinder cavity of the main cylinder 1 is gas-inlet. When the spool of the main reversing valve 3 is in the neutral state, the auxiliary exhaust valve 6 exhausts the gas in the other cylinder cavity of the main cylinder 1, so that the cylinder piston of the main cylinder 1 can move to the direction of the cylinder end cover of the other cylinder cavity under the action of the gas pressure in the one cylinder cavity, thereby triggering the reversing trigger device 2 to make the spool of the main reversing valve 3 reverse and switch to the state that the other cylinder cavity is gas-inlet and the one cylinder cavity is gas-exhaust.

[0033] The auxiliary exhaust valve 6 comprises an auxiliary exhaust valve body 601 and an auxiliary exhaust valve core 602. The auxiliary exhaust valve body 601 is a hollow structure, and the auxiliary exhaust valve body 601 is provided with a third control port G, a fourth control port H and a fifth exhaust port S. The third control port G is in communication with the cylinder cavity on one side of the first cylinder piston 101 and the first working port A1 of the main reversing valve 3 at the same time. The fourth control port H is in communication with the cylinder cavity on the other side of the first cylinder piston 101 and the second working port B1 of the main reversing valve 3 at the same time. The fifth exhaust port S is in communication with the outside. The auxiliary exhaust valve core 602 is slidably arranged in the auxiliary exhaust valve body 601, and under the action of the gas pressure in the third control port G, the auxiliary exhaust valve core 602 slides to the first position, so that the third control port G is not in communication with the fifth exhaust port S, and the fourth control port H is in communication with the fifth exhaust port S. Under the action of the gas pressure in the fourth control port H, the auxiliary exhaust valve core 602 slides to the second position, so that the third control port G is in communication with the fifth exhaust port S, and the fourth control port H is not in communication with the fifth exhaust port S. The third control port G and the fourth control port H are respectively arranged at the left and right ends of the auxiliary exhaust valve body 601. The fifth exhaust port S is arranged at the upper part of the auxiliary exhaust valve body 601 and at the middle position of the auxiliary exhaust valve body 601. A silencer 609 is arranged at the exhaust port. Under the above conditions, after the first working port A1 is filled with gas, the cylinder cavity on the left side of the first cylinder piston 101 is filled with gas, the gas pressurizes in the third control port G, the auxiliary exhaust valve body 6 moves to the right, the fourth control port H is in communication with the fifth exhaust port S to realize exhaust, and the cylinder cavity on the right side of the first cylinder piston 101 is exhausted through the fifth exhaust port S and the second working port B1. After the second working port B1 is filled with gas, the cylinder cavity on the right side of the first cylinder piston 101 is filled with gas, the gas pressurizes in the fourth control port H, the auxiliary exhaust valve body 6 moves to the left, the third control port G is in communication with the fifth exhaust port S to realize exhaust, and the cylinder cavity on the left side of the first cylinder piston 101 is exhausted through the fifth exhaust port S and the first working port A1.

[0034] The auxiliary exhaust valve body 601 is provided with a first limiting hole plate 603 and a second limiting hole plate 604. The first limiting hole plate 603 and the second limiting hole plate 604 are respectively arranged at the first position and the second position and are connected with the inner wall of the auxiliary exhaust valve body 601, so as to limit the sliding of the auxiliary exhaust valve core 602. The first limiting hole plate 603 and the second limiting hole plate 604 are symmetrically arranged.

[0035] The inner wall of the auxiliary exhaust valve body 601 is provided with a protruding portion 605, the fifth exhaust port S is arranged on the protruding portion 605, the auxiliary exhaust valve core 602 is arranged at the protruding portion 605, and a gap is formed between the inner wall of the protruding portion 605 and the outer wall of the auxiliary exhaust valve core 602; the outer wall of the auxiliary exhaust valve core 602 is provided with a first sealing portion 606 and a second sealing portion 607, the first sealing portion 606 is arranged outside the protruding portion 605 when the auxiliary exhaust valve core 602 slides to the first position, and is spaced apart from the inner wall of the auxiliary exhaust valve body 601 by a certain distance, the second sealing portion 607 is arranged inside the protruding portion 605 when the auxiliary exhaust valve core 602 slides to the first position, and seals the gap between the outer wall of the auxiliary exhaust valve core 602 and the inner wall of the protruding portion 605, the first sealing portion 606 is arranged inside the protruding portion 605 when the auxiliary exhaust valve core 602 slides to the second position, and seals the gap between the outer wall of the auxiliary exhaust valve core 602 and the inner wall of the protruding portion 605, the second sealing portion 607 is arranged outside the protruding portion 605 when the auxiliary exhaust valve core 602 slides to the second position, and is spaced apart from the inner wall of the auxiliary exhaust valve body 601 by a certain distance, so that when the auxiliary exhaust valve core 602 slides to the first position, the third control port G is not communicated with the fifth exhaust port S, and the fourth control port H is communicated with the fifth exhaust port S through the gap between the outer wall of the auxiliary exhaust valve core 602 and the inner wall of the auxiliary exhaust valve body 601; when the auxiliary exhaust valve core 602 slides to the second position, the third control port G is communicated with the fifth exhaust port S through the gap between the outer wall of the auxiliary exhaust valve core 602 and the inner wall of the auxiliary exhaust valve body 601, and the fourth control port H is not communicated with the fifth exhaust port S. The protruding portion 605 is arranged around the center line of the auxiliary exhaust valve body 601. The protruding portion 605 is arranged at the middle position of the auxiliary exhaust valve body 601. The first sealing portion 606 and the second sealing portion 607 are both arranged around the center line of the auxiliary exhaust valve core 606. The first sealing portion 606 and the second sealing portion 607 are symmetrically arranged. The first sealing portion 606 and the second sealing portion 607 are both sealing rings. The first sealing portion 606 and the second sealing portion 607 are both embedded on the outer wall of the auxiliary exhaust valve core 602.

[0036] The outer wall of the auxiliary exhaust valve core 602 is provided with a recess 608, which is arranged between the first sealing part 606 and the second sealing part 607. When the auxiliary exhaust valve core 602 slides to the first position, the end close to the first sealing ring 606 of the recess 608 is arranged outside the protruding part 605, and the end close to the second sealing ring 607 is arranged inside the protruding part 605. When the auxiliary exhaust valve core 602 slides to the second position, the end close to the second sealing ring 607 is arranged outside the protruding part 605, and the end close to the first sealing ring 606 is arranged outside the protruding part 605. When the auxiliary exhaust valve core 602 slides to the first position, the recess 608 assists in connecting the third control port G and the fifth exhaust port S. When the auxiliary exhaust valve core 602 slides to the second position, the recess 608 assists in connecting the fourth control port H and the fifth exhaust port S. The recess 608 is arranged around the center line of the auxiliary exhaust valve core 602. The recess 608 is arranged at the middle position of the auxiliary exhaust valve core 602.

[0037] The hydraulic station can further include a linkage auxiliary cylinder and an auxiliary oil cylinder. The auxiliary cylinder includes an auxiliary reversing valve, which can obtain the valve core reversing to position information of the main reversing valve, and switch the air inlet and exhaust of the two cylinder cavities of the auxiliary cylinder according to the obtained information. The oil supply port of the auxiliary oil cylinder is connected in parallel with the oil supply port of the main oil cylinder. Wherein, the hydraulic station can further include a linkage first auxiliary cylinder 7 and a first auxiliary oil cylinder 12. The first auxiliary cylinder 7 includes a first auxiliary reversing valve 8, which can obtain the valve core reversing to position information of the main reversing valve 3, and switch the air inlet and exhaust of the two cylinder cavities of the first auxiliary cylinder 7 according to the obtained information. The oil supply port of the first auxiliary oil cylinder 12 is connected in parallel with the oil supply port of the main oil cylinder 1.

[0038] The oil supply port of the first auxiliary oil cylinder 12 and the oil supply port of the main oil cylinder 1 are both connected to the hydraulic valve block through a one-way valve. Optionally, the oil supply port of the first auxiliary oil cylinder 12 and the oil supply port of the main oil cylinder 1 are both connected to the pressure maintaining structure through a one-way valve, and the pressure maintaining structure is connected to the hydraulic valve block. The oil inlet port of the first auxiliary oil cylinder 12 and the oil inlet port of the main oil cylinder 1 are both connected to the oil tank through a one-way valve.

[0039] The structure of the first auxiliary cylinder 7 is the same as that of the main cylinder 1, and the connection structure of the first auxiliary cylinder 7 and the first auxiliary oil cylinder 12 is the same as that of the main cylinder 1 and the oil cylinder 4, which is not described in detail. Wherein, the first auxiliary cylinder 7 has a second cylinder piston 701, and the second cylinder piston 701 of the first auxiliary cylinder 7 and the second oil cylinder piston 1201 of the first auxiliary oil cylinder 12 are connected through a second linkage rod 13.

[0040] The structure of the first auxiliary reversing valve 8 is the same as that of the main reversing valve 3, and the connection structure of the first auxiliary reversing valve 8 and the first auxiliary cylinder 7 is the same as that of the main reversing valve 3 and the main cylinder 1, which is not described herein. The first auxiliary reversing valve 8 can be a gas-controlled reversing valve. The first auxiliary reversing valve 8 and the main reversing valve 3 are supplied with gas from the same gas source 11. The gas-controlled reversing valve body of the first auxiliary reversing valve 8 is provided with a fifth control port Y2, a sixth control port Z2, a third working port A2, a fourth working port B2, a fourth gas inlet port P2, a sixth gas outlet port R21, and a seventh gas outlet port R22. The fifth control port Y2 and the sixth control port Z2 are both supplied with gas under pressure. The third working port A2 is in communication with the left side of the cylinder cavity of the second cylinder piston 701 of the first auxiliary cylinder 7. The fourth working port B2 is in communication with the right side of the cylinder cavity of the second cylinder piston 701. The fourth gas inlet port P2 is in communication with the gas source 11. The gas-controlled reversing valve body is provided with a gas-controlled reversing valve core which can move to the right under the action of the gas pressure in the fifth control port Y2 and move to the left under the action of the gas pressure in the sixth control port Z2. When the gas-controlled reversing valve core moves to the right to the position, the third working port A2 is in communication with the fourth gas inlet port P2, and the fourth working port B2 is in communication with the seventh gas outlet port R22. When the gas-controlled reversing valve core moves to the left to the position, the fourth working port B2 is in communication with the fourth gas inlet port P2, and the third working port A2 is in communication with the sixth gas outlet port R21.

[0041] To achieve the first level auxiliary reversing valve 8 can obtain the main reversing valve 3 valve core reversing to the position information, and according to the information obtained switch first level auxiliary cylinder 7 two cylinder cavity intake and exhaust, first level auxiliary reversing valve 8 two control port respectively with the main reversing valve 3 two working port communication. Specifically as follows: the fifth control port Y2 and the first working port A1 of the main reversing valve 3 communication, the second control port Z1 and the second working port B1 of the main reversing valve 3 communication. Under the above conditions, the first working port A1 of the main reversing valve 3 intake to the fifth control port Y2 pressurization, as the first level auxiliary reversing valve 8 gas control reversing valve core to the right move, until the third working port A2 and the fourth intake port P2 communication realize intake, the fourth working port B2 and the seventh exhaust port R22 realize exhaust, so that the second cylinder piston 701 of the first level auxiliary cylinder 7 left side of the cylinder cavity intake, right side of the cylinder cavity exhaust, the second cylinder piston 701 under the action of the right move. The second working port B1 of the main reversing valve 3 intake to the sixth control port Z2 pressurization, as the first level auxiliary reversing valve 8 gas control reversing valve core to the left move, until the fourth working port B2 and the fourth intake port P2 communication realize intake, the third working port A2 and the sixth exhaust port R21 realize exhaust, so that the second cylinder piston 701 right side of the cylinder cavity intake, left side of the cylinder cavity exhaust, the second cylinder piston 701 under the action of the left move. In the above process, the first level auxiliary reversing valve 8 by receiving the first working port A1 and the second working port B1 intake to obtain the main reversing valve 3 valve core reversing to the position information, and according to the first working port A1 intake and the second working port B1 intake switch first level auxiliary cylinder 7 two cylinder cavity intake and exhaust.

[0042] To achieve the first auxiliary reversing valve 8 can obtain the main reversing valve 3 valve core reversing to the position information, and according to the information obtained switch first auxiliary cylinder 7 two cylinder cavity intake and exhaust, the two control port of first auxiliary reversing valve 8 respectively with first auxiliary cylinder 7 two cylinder cavity communication. Specifically as follows: the fifth control port Y2 with the first cylinder piston 101 left side cylinder cavity communication, the sixth control port Z2 with the first cylinder piston 101 right side cylinder cavity communication. Under the above conditions, the first cylinder piston 101 left side cylinder cavity intake to the fifth control port Y2 pressurization, as the first auxiliary reversing valve 8 gas control reversing valve core to the right move, until the third working port A2 and the fourth intake port P2 communication realize intake, the fourth working port B2 and the seventh exhaust port R22 realize exhaust, so that the second cylinder piston 701 left side cylinder cavity intake, right side cylinder cavity exhaust, the second cylinder piston 701 under the action of the right move. The first cylinder piston 101 right side cylinder cavity intake to the sixth control port Z2 pressurization, as the first auxiliary reversing valve 8 gas control reversing valve core to the left move, until the fourth working port B2 and the fourth intake port P2 communication realize intake, the third working port A2 and the sixth exhaust port R21 realize exhaust, so that the second cylinder piston 701 right side cylinder cavity intake, left side cylinder cavity exhaust, the second cylinder piston 701 under the action of the left move. In the above process, the first auxiliary reversing valve 8 by receiving the first cylinder piston 101 left side and right side cylinder cavity intake to obtain the main reversing valve 3 valve core reversing to the position information, and according to the first cylinder piston 101 left side and right side cylinder cavity intake switch first auxiliary cylinder 7 two cylinder cavity intake and exhaust.

[0043] To achieve the first auxiliary reversing valve 8 can obtain the main reversing valve 3 valve core reversing to the information, and according to the information obtained switch first auxiliary cylinder 7 two cylinder cavity intake and exhaust, first auxiliary reversing valve 8 two control port respectively with auxiliary exhaust valve 6 two control port communication. Specifically as follows: the fifth control port Y2 and auxiliary exhaust valve 6 third control port G communication, the sixth control port Z2 and auxiliary exhaust valve 6 fourth control port H communication. Under the above conditions, the third control port G intake to the fifth control port Y2 pressurization, as the first auxiliary reversing valve 8 gas control reversing valve core to the right move, until the third working port A2 and fourth intake port P2 communication realize intake, fourth working port B2 and the seventh exhaust port R22 realize exhaust, so that the second cylinder piston 701 of first auxiliary cylinder 7 left side of the cylinder cavity intake, right side of the cylinder cavity exhaust, the second cylinder piston 701 under the action of the right move. Fourth control port H intake to the sixth control port Z2 pressurization, as the first auxiliary reversing valve 8 gas control reversing valve core to the left move, until the fourth working port B2 and fourth intake port P2 communication realize intake, third working port A2 and the sixth exhaust port R21 realize exhaust, so that the second cylinder piston 701 right side of the cylinder cavity intake, left side of the cylinder cavity exhaust, the second cylinder piston 701 under the action of the left move. In the above process, the first auxiliary reversing valve 8 by receiving third control port G and fourth control port H intake to obtain the main reversing valve 3 valve core reversing to the information, and according to the third control port G and fourth control port H intake switch first auxiliary cylinder 7 two cylinder cavity intake and exhaust.

[0044] Preferably, a control port of the first auxiliary reversing valve 8 and a working port of the main reversing valve 3, a cylinder cavity of the main cylinder 1, a control port of the auxiliary exhaust valve 6 are simultaneously communicated, another control port of the first auxiliary reversing valve 8 and another working port of the main reversing valve 3, another cylinder cavity of the main cylinder 1, another control port of the auxiliary exhaust valve 6 are simultaneously communicated. Specifically as follows: the fifth control port Y2 of the first auxiliary reversing valve 8 and the first working port A1 of the main reversing valve 3, the left side of the cylinder cavity of the first cylinder piston 101, the third control port G of the auxiliary exhaust valve 6 are simultaneously communicated, the sixth control port Z2 of the first auxiliary reversing valve 8 and the second working port B1 of the main reversing valve 3, the right side of the cylinder cavity of the first cylinder piston 101, the fourth control port H of the auxiliary exhaust valve 6 are simultaneously communicated.

[0045] The linkage auxiliary cylinder and the auxiliary oil cylinder can be at least two levels. The oil supply ports of the auxiliary oil cylinders at each level are connected in parallel with the oil supply port of the main oil cylinder 4. Each level of auxiliary cylinder includes an auxiliary reversing valve, wherein the auxiliary reversing valve of the first level auxiliary cylinder can obtain the valve core reversing to position information of the main reversing valve 3, and switch the air intake and exhaust of the two cylinder cavities of the first level auxiliary cylinder according to the obtained information. The auxiliary reversing valve of the non-first level auxiliary cylinder can obtain the valve core reversing to position information of the auxiliary reversing valve of the upper level auxiliary cylinder, and switch the air intake and exhaust of the two cylinder cavities of the auxiliary cylinder at this level according to the obtained information. It should be noted that the stroke difference between the main cylinder 1 and the first level auxiliary cylinder is controlled within a certain range, and the first level auxiliary cylinder starts to reverse after the main cylinder 1 starts to reverse; the stroke difference between the adjacent two levels of auxiliary cylinders is controlled within a certain range, and the lower level auxiliary cylinder starts to reverse after the upper level auxiliary cylinder in the adjacent two levels of auxiliary cylinders starts to reverse. The above setting makes the strokes of the main cylinder 11 and each level of auxiliary cylinder basically the same, and the reversing of the main cylinder 11 and each level of auxiliary cylinder is coordinated smoothly.

[0046] The hydraulic station can further include a linkage second level auxiliary cylinder 9 and a second level auxiliary oil cylinder 14. The second level auxiliary cylinder 9 includes a second level auxiliary reversing valve 10, which can obtain the valve core reversing to position information of the first level auxiliary reversing valve 8, and switch the air intake and exhaust of the two cylinder cavities of the second level auxiliary cylinder 9 according to the obtained information. The oil supply port of the second level auxiliary oil cylinder 14 is connected in parallel with the oil supply port of the first level auxiliary oil cylinder 12.

[0047] The oil supply ports of the second level auxiliary oil cylinder 14 and the first level auxiliary oil cylinder 12 are both communicated to the hydraulic valve block through a one-way valve. Alternatively, the oil supply ports of the second level auxiliary oil cylinder 14 and the first level auxiliary oil cylinder 12 are both communicated to the pressure maintaining structure through a one-way valve, and the pressure maintaining structure is connected to the hydraulic valve block. The oil inlet ports of the second level auxiliary oil cylinder 14 and the first level auxiliary oil cylinder 12 are both communicated to the oil tank through a one-way valve.

[0048] The structure of the second level auxiliary cylinder 9 is the same as that of the main cylinder 1, and the connection structure of the second level auxiliary cylinder 9 and the second level auxiliary oil cylinder 14 is the same as that of the main cylinder 1 and the oil cylinder 4, which is not described here. Among them, the second level auxiliary cylinder 9 has a third cylinder piston 901, and the third cylinder piston 901 of the second level auxiliary cylinder 9 and the oil cylinder piston 1401 of the second level auxiliary oil cylinder 14 are connected through a third linkage rod 15.

[0049] The structure of the secondary auxiliary reversing valve 10 is the same as that of the main reversing valve 3, and the connection structure of the secondary auxiliary reversing valve 10 and the secondary auxiliary cylinder 9 is the same as that of the main reversing valve 3 and the main cylinder 1, which is not repeated. Among them, the secondary auxiliary reversing valve 10 can be a gas control reversing valve. The secondary auxiliary reversing valve 10, the primary auxiliary reversing valve 8, and the main reversing valve 3 are supplied with gas from the same gas source 11. The gas control reversing valve body of the secondary auxiliary reversing valve 10 is provided with a seventh control port Y3, an eighth control port Z3, a fifth working port A3, a sixth working port B3, a fifth gas inlet port P3, an eighth gas outlet port R31, and a ninth gas outlet port R32. The seventh control port Y3 and the eighth control port Z3 are both supplied with gas pressure. The fifth working port A3 is in communication with the left cylinder cavity of the third cylinder piston 901 of the secondary auxiliary cylinder 9, the sixth working port B3 is in communication with the right cylinder cavity of the third cylinder piston 901, and the fifth gas inlet port P3 is in communication with the gas source 11. The gas control reversing valve body is provided with a gas control reversing valve core that can move to the right under the action of the gas pressure in the seventh control port Y3 and move to the left under the action of the gas pressure in the eighth control port Z3. When the gas control reversing valve core moves to the right, the fifth working port A3 is in communication with the fifth gas inlet port P3, and the sixth working port B3 is in communication with the ninth gas outlet port R32. When the gas control reversing valve core moves to the left, the sixth working port B3 is in communication with the fifth gas inlet port P3, and the fifth working port A3 is in communication with the eighth gas outlet port R31.

[0050] To realize the secondary auxiliary directional valve 10 can obtain the first auxiliary directional valve 8 spool to the position information of movement, and according to the information obtained by switching two cylinder cavity intake and exhaust of secondary auxiliary cylinder 9, two control ports of secondary auxiliary directional valve 10 are communicated with two working ports of first auxiliary directional valve 8. Specifically as follows: the seventh control port Y3 and the third working port A2 of the first auxiliary directional valve 8 are communicated, the eighth control port Z3 and the fourth working port B2 of the first auxiliary directional valve 8 are communicated. Under the above conditions, the third working port A2 of the first auxiliary directional valve 8 is pressurized by intake into the seventh control port Y3, as the secondary auxiliary directional valve 10 gas control directional valve spool moves to the right, until the fifth working port A3 and the fifth intake port P3 are communicated to realize the intake, the sixth working port B3 and the ninth exhaust port R32 realize the exhaust, so that the third cylinder piston 901 of the secondary auxiliary cylinder 9 left side of the cylinder cavity intake, the right side of the cylinder cavity exhaust, the third cylinder piston 901 moves to the right under the action of gas pressure. The fourth working port B2 of the first auxiliary directional valve 8 is pressurized by intake into the eighth control port Z3, as the secondary auxiliary directional valve 10 gas control directional valve spool moves to the left, until the sixth working port B3 and the fifth intake port P3 are communicated to realize the intake, the fifth working port A3 and the eighth exhaust port R31 realize the exhaust, so that the third cylinder piston 901 of the right side of the cylinder cavity intake, the left side of the cylinder cavity exhaust, the third cylinder piston 901 moves to the left under the action of gas pressure. In the above process, the secondary auxiliary directional valve 10 obtains the first auxiliary directional valve 8 spool to the position information of movement by receiving the third working port A2 and the fourth working port B2 intake, and according to the third working port A2 intake and the fourth working port B2 intake switching two cylinder cavity intake and exhaust of secondary auxiliary cylinder 9.

[0051] To realize that the secondary auxiliary directional valve 10 can obtain the moving to position information of the spool of the primary auxiliary directional valve 8, and switch the two cylinder cavities intake and exhaust of the secondary auxiliary cylinder 9 according to the obtained information, the two control ports of the secondary auxiliary directional valve 10 are communicated with the two cylinder cavities of the primary auxiliary cylinder 7 respectively. Specifically as follows: the seventh control port Y3 is communicated with the cylinder cavity on the left side of the second cylinder piston 701 of the primary auxiliary cylinder 7, and the eighth control port Z3 is communicated with the cylinder cavity on the right side of the second cylinder piston 701. Under the above condition, the cylinder cavity on the left side of the second cylinder piston 701 is pressurized to the seventh control port Y3, the gas control directional valve spool of the secondary auxiliary directional valve 10 moves to the right, until the fifth working port A3 is communicated with the fifth intake port P3 to realize the intake, and the sixth working port B3 is communicated with the ninth exhaust port R32 to realize the exhaust, so that the cylinder cavity on the left side of the third cylinder piston 901 is pressurized, and the cylinder cavity on the right side is exhausted, and the third cylinder piston 901 moves to the right under the action of the gas pressure. The cylinder cavity on the right side of the second cylinder piston 701 is pressurized to the eighth control port Z3, the gas control directional valve spool of the secondary auxiliary directional valve 10 moves to the left, until the sixth working port B3 is communicated with the fifth intake port P3 to realize the intake, and the fifth working port A3 is communicated with the eighth exhaust port R31 to realize the exhaust, so that the cylinder cavity on the right side of the third cylinder piston 901 is pressurized, and the cylinder cavity on the left side is exhausted, and the third cylinder piston 901 moves to the left under the action of the gas pressure. In the above process, the secondary auxiliary directional valve 10 obtains the spool switching to position information of the primary auxiliary directional valve 8 by receiving the cylinder cavity intake on the left side and the right side of the second cylinder piston 701, and switches the two cylinder cavities intake and exhaust of the secondary auxiliary cylinder 9 according to the cylinder cavity intake on the left side and the right side of the second cylinder piston 701.

[0052] Preferably, one control port of the secondary auxiliary directional valve 10 is communicated with one working port of the primary auxiliary directional valve 8 and one cylinder cavity of the primary auxiliary cylinder 7 at the same time, and the other control port of the secondary auxiliary directional valve 10 is communicated with the other working port of the primary auxiliary directional valve 8 and the other cylinder cavity of the primary auxiliary cylinder 7 at the same time. Specifically, the seventh control port Y3 of the secondary auxiliary directional valve 10 is communicated with the third working port A2 of the primary auxiliary directional valve 8 and the cylinder cavity on the left side of the second cylinder piston 701 of the primary auxiliary cylinder 7 at the same time, and the eighth control port Z3 of the secondary auxiliary directional valve 10 is communicated with the fourth working port B2 of the primary auxiliary directional valve 8 and the cylinder cavity on the right side of the second cylinder piston 701 of the primary auxiliary cylinder 7 at the same time.

[0053] The hydraulic station can further include a linkage tertiary auxiliary cylinder 17 and a tertiary auxiliary oil cylinder 16. The tertiary auxiliary cylinder 17 includes a tertiary auxiliary directional valve 19, and the tertiary auxiliary directional valve 19 can obtain the spool switching to position information of the secondary auxiliary directional valve 10, and switch the two cylinder cavities intake and exhaust of the tertiary auxiliary cylinder 17 according to the obtained information. The oil supply port of the tertiary auxiliary oil cylinder 16 is connected in parallel with the oil supply port of the secondary auxiliary oil cylinder 14.

[0054] The oil supply port of the third auxiliary oil cylinder 16 and the oil supply port of the second auxiliary oil cylinder 14 are communicated to the hydraulic valve block through a one-way valve. Alternatively, the oil supply port of the third auxiliary oil cylinder 16 and the oil supply port of the second auxiliary oil cylinder 14 are communicated to the pressure maintaining structure through a one-way valve, and the pressure maintaining structure is communicated to the hydraulic valve block. The oil inlet port of the third auxiliary oil cylinder 16 and the oil inlet port of the second auxiliary oil cylinder 14 are communicated to the oil tank through a one-way valve.

[0055] The third auxiliary cylinder 17 has the same structure as the main cylinder 1, and the connection structure of the third auxiliary cylinder 17 and the third auxiliary oil cylinder 16 is the same as the connection structure of the main cylinder 1 and the oil cylinder 4, which will not be repeated here. Among them, the third auxiliary cylinder 17 has a fourth cylinder piston 1701, and the fourth cylinder piston 1701 of the third auxiliary cylinder 17 and the oil cylinder piston 1601 of the third auxiliary oil cylinder 16 are connected through a third linkage rod 18.

[0056] The structure of the third auxiliary reversing valve 19 is the same as that of the main reversing valve 3, and the connection structure of the third auxiliary reversing valve 19 and the third auxiliary cylinder 17 is the same as that of the main reversing valve 3 and the main cylinder 1, which will not be repeated here. Among them, the third auxiliary reversing valve 19 can be a gas-controlled reversing valve. The third auxiliary reversing valve 19, the second auxiliary reversing valve 10, the first auxiliary reversing valve 8, and the main reversing valve 3 are supplied with gas from the same gas source 11. As the valve body of the gas-controlled reversing valve of the third auxiliary reversing valve 19, the ninth control port Y4, the tenth control port Z4, the seventh working port A4, the eighth working port B4, the sixth gas inlet port P4, the tenth gas outlet port R41, and the eleventh gas outlet port R42 are provided. The ninth control port Y4 and the tenth control port Z4 are supplied with gas under pressure, the seventh working port A4 is communicated with the left cylinder cavity of the fourth cylinder piston 1701 of the third auxiliary cylinder 17, the eighth working port B4 is communicated with the right cylinder cavity of the fourth cylinder piston 1701, the sixth gas inlet port P4 is communicated with the gas source 11, and the gas-controlled reversing valve spool is provided in the valve body. The gas-controlled reversing valve spool moves to the right under the action of the gas pressure in the ninth control port Y4 and moves to the left under the action of the gas pressure in the tenth control port Z4. When the gas-controlled reversing valve spool moves to the right to the position, the seventh working port A4 is communicated with the sixth gas inlet port P4, and the eighth working port B4 is communicated with the eleventh gas outlet port R42. When the gas-controlled reversing valve spool moves to the left to the position, the eighth working port B4 is communicated with the sixth gas inlet port P4, and the seventh working port A4 is communicated with the tenth gas outlet port R41.

[0057] To realize that the three-stage auxiliary reversing valve 19 can obtain the movement to position information of the spool of the two-stage auxiliary reversing valve 10, and according to the obtained information, switch the two cylinder cavity intake and exhaust of the three-stage auxiliary cylinder, the two control ports of the three-stage auxiliary reversing valve 19 are respectively communicated with the two working ports of the two-stage auxiliary reversing valve 10. Specifically as follows: the ninth control port Y4 is communicated with the fifth working port A3 of the two-stage auxiliary reversing valve 10, and the tenth control port Z4 is communicated with the sixth working port B3 of the two-stage auxiliary reversing valve 10. Under the above conditions, the fifth working port A3 of the two-stage auxiliary reversing valve 10 is pressurized by intake air into the ninth control port Y4, as the pneumatic control reversing valve spool of the three-stage auxiliary reversing valve 19 moves to the right, until the seventh working port A4 is communicated with the sixth intake port P4 to realize intake, and the eighth working port B4 is communicated with the eleventh exhaust port R42 to realize exhaust, so that the left side of the fourth cylinder piston 1701 of the three-stage auxiliary cylinder 17 is pressurized by intake air, and the right side of the fourth cylinder piston 1701 is pressurized by exhaust air, and the fourth cylinder piston 1701 moves to the right under the action of the gas pressure. The sixth working port B3 of the two-stage auxiliary reversing valve 10 is pressurized by intake air into the tenth control port Z4, as the pneumatic control reversing valve spool of the three-stage auxiliary reversing valve 19 moves to the left, until the eighth working port B4 is communicated with the sixth intake port P4 to realize intake, and the seventh working port A4 is communicated with the tenth exhaust port R41 to realize exhaust, so that the right side of the fourth cylinder piston 1701 is pressurized by intake air, and the left side of the fourth cylinder piston 1701 is pressurized by exhaust air, and the fourth cylinder piston 1701 moves to the left under the action of the gas pressure. In the above process, the three-stage auxiliary reversing valve 19 obtains the spool reversing to position information of the two-stage auxiliary reversing valve 10 by receiving the intake air of the fifth working port A3 and the sixth working port B3, and according to the intake air of the fifth working port A3 and the sixth working port B3, switches the two cylinder cavity intake and exhaust of the three-stage auxiliary cylinder 17.

[0058] To achieve the third auxiliary reversing valve 19 can obtain the second auxiliary reversing valve 10 spool movement to the information, and according to the information obtained by switching the third auxiliary cylinder two cylinder cavity intake and exhaust, the third auxiliary reversing valve 19 two control port respectively with the second auxiliary cylinder 9 two cylinder cavity. Specifically as follows: the ninth control port Y4 and the second auxiliary cylinder 9 third cylinder piston 901 left side of the cylinder cavity communication, the tenth control port Z4 and the third cylinder piston 901 right side of the cylinder cavity communication. Under the above conditions, the third cylinder piston 901 left side of the cylinder cavity intake to the ninth control port Y4 pressurization, as the third auxiliary reversing valve 19 pneumatic control reversing valve spool to the right, until the seventh working port A4 and the sixth intake port P4 communication realize intake, the eighth working port B4 and the eleventh exhaust port R42 realize exhaust, so that the fourth cylinder piston 1701 left side of the cylinder cavity intake, right side of the cylinder cavity exhaust, the fourth cylinder piston 1701 under the action of the gas right move. The third cylinder piston 901 right side of the cylinder cavity to the tenth control port Z4 pressurization, as the third auxiliary reversing valve 19 pneumatic control reversing valve spool to the left, until the eighth working port B4 and the sixth intake port P4 communication realize intake, the seventh working port A4 and the tenth exhaust port R41 realize exhaust, so that the fourth cylinder piston 1701 right side of the cylinder cavity intake, left side of the cylinder cavity exhaust, the fourth cylinder piston 1701 under the action of the gas left move. In the above process, the third auxiliary reversing valve 19 by receiving the third cylinder piston 901 left and right side of the cylinder cavity intake to obtain the second auxiliary reversing valve 10 spool reversing to the information, and according to the third cylinder piston 901 left and right side of the cylinder cavity intake switching the third auxiliary cylinder 17 two cylinder cavity intake and exhaust.

[0059] Preferably, a control port of the third auxiliary reversing valve 19 and a working port of the second auxiliary reversing valve 10, a cylinder cavity of the second auxiliary cylinder 9 are communicated at the same time, another control port of the third auxiliary reversing valve 19 and another working port of the second auxiliary reversing valve 10, another cylinder cavity of the second auxiliary cylinder 9 are communicated at the same time. Specifically, the ninth control port Y4 of the third auxiliary reversing valve 19 and the fifth working port A3 of the second auxiliary reversing valve 10, the left side of the third cylinder piston 901 of the second auxiliary cylinder 9 are communicated at the same time, the tenth control port Z4 of the third auxiliary reversing valve 19 and the sixth working port B3 of the second auxiliary reversing valve 10, the right side of the third cylinder piston 901 of the second auxiliary cylinder 9 are communicated at the same time.

[0060] The hydraulic station of the utility model realizes continuous oil supply through setting up the first auxiliary cylinder 7 and the first auxiliary oil cylinder 12, and setting up the first auxiliary cylinder 7 including the first auxiliary reversing valve 8, so that when the oil supply of the main oil cylinder 4 is stopped in the process of the main cylinder 1 driving the main oil cylinder 4 to reverse, the first auxiliary reversing valve 8 controls the first auxiliary cylinder 7 to drive the first auxiliary oil cylinder 12 to supply oil according to the valve core reversing in place information of the main reversing valve 3, thereby realizing continuous oil supply.

[0061] The hydraulic station of the utility model realizes continuous oil supply through setting up the second auxiliary cylinder 9 and the second auxiliary oil cylinder 14, and setting up the second auxiliary cylinder 9 including the second auxiliary reversing valve 10, so that when the oil supply of the first auxiliary oil cylinder 12 is stopped in the process of the first auxiliary cylinder 7 driving the first auxiliary oil cylinder 12 to reverse, the second auxiliary reversing valve 10 controls the second auxiliary cylinder 9 to drive the second auxiliary oil cylinder 14 to supply oil according to the valve core reversing in place information of the first auxiliary reversing valve 8, thereby realizing continuous oil supply.

[0062] The hydraulic station of the utility model realizes continuous oil supply through setting up the third auxiliary cylinder 17 and the third auxiliary oil cylinder 16, and setting up the third auxiliary cylinder 17 including the third auxiliary reversing valve 19, so that when the oil supply of the second auxiliary oil cylinder 14 is stopped in the process of the second auxiliary cylinder 9 driving the second auxiliary oil cylinder 14 to reverse, the third auxiliary reversing valve 17 controls the third auxiliary cylinder 17 to drive the second auxiliary oil cylinder 16 to supply oil according to the valve core reversing in place information of the second auxiliary reversing valve 10, thereby realizing continuous oil supply.

[0063] The same or similar reference numerals in the drawings of the embodiment correspond to the same or similar components; in the description of the utility model, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent.

[0064] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A hydraulic station comprising a main cylinder and a main ram linked together; said main cylinder comprising a reversing trigger device capable of emitting a signal of the cylinder piston of said main cylinder moving into position and a main reversing valve capable of switching the intake and exhaust of the two cylinder cavities of said main cylinder according to the signal of said reversing trigger device; characterized in that, The linkage auxiliary cylinder and the auxiliary oil cylinder are further included; the auxiliary cylinder includes an auxiliary reversing valve, which can obtain the spool reversing to position information of the main reversing valve, and switch the two cylinder cavities of the auxiliary cylinder according to the obtained information; the oil supply port of the auxiliary oil cylinder is connected in parallel with the oil supply port of the main oil cylinder.

2. The hydraulic station of claim 1, wherein, The two control ports of the auxiliary reversing valve are respectively connected with the two working ports of the main reversing valve, or are respectively connected with the two cylinder cavities of the main cylinder.

3. The hydraulic station of claim 1, wherein, The linkage auxiliary cylinder and the auxiliary oil cylinder are further included; the auxiliary cylinder includes an auxiliary reversing valve, which can obtain the spool reversing to position information of the main reversing valve, and switch the two cylinder cavities of the auxiliary cylinder according to the obtained information; the oil supply port of the auxiliary oil cylinder is connected in parallel with the oil supply port of the main oil cylinder.

4. The hydraulic station of claim 3, wherein, The two control ports of the auxiliary reversing valve are respectively connected with the two working ports of the main reversing valve, or are respectively connected with the two cylinder cavities of the main cylinder.

5. The hydraulic station of claim 3, wherein, The two control ports of the auxiliary reversing valve are respectively connected with the two working ports of the main reversing valve, or are respectively connected with the two cylinder cavities of the main cylinder.

6. The hydraulic station of claim 3, wherein, The two working ports of the auxiliary reversing valve are respectively connected with the two cylinder cavities of the auxiliary cylinder, one control port of the auxiliary reversing valve is connected with one working port of the main reversing valve, one cylinder cavity of the main cylinder and one control port of the auxiliary exhaust valve, and the other control port of the auxiliary reversing valve is connected with the other working port of the main reversing valve, the other cylinder cavity of the main cylinder and the other control port of the auxiliary exhaust valve.

7. The hydraulic station of claim 1, wherein, When the spool of the main reversing valve is in the neutral state, the auxiliary exhaust valve exhausts the gas in the other cylinder cavity of the main cylinder, so that the cylinder piston of the main cylinder can move to the direction of the cylinder end cover of the other cylinder cavity under the action of the gas pressure in one cylinder cavity, thereby triggering the reversing trigger device to make the spool of the main reversing valve reverse, and switch to the state that the other cylinder cavity is in the state of air intake and the one cylinder cavity is in the state of air exhaust. The linkage auxiliary cylinder and the auxiliary oil cylinder are further included; the auxiliary cylinder includes an auxiliary reversing valve, which can obtain the spool reversing to position information of the main reversing valve, and switch the two cylinder cavities of the auxiliary cylinder according to the obtained information; the oil supply port of the auxiliary oil cylinder is connected in parallel with the oil supply port of the main oil cylinder.

8. The hydraulic station of claim 7, wherein, The two control ports of the auxiliary reversing valve are respectively connected with the two working ports of the main reversing valve, or are respectively connected with the two cylinder cavities of the main cylinder.

9. The hydraulic station of claim 8, wherein, The linkage auxiliary cylinder and the auxiliary oil cylinder are further included; the auxiliary cylinder includes an auxiliary reversing valve, which can obtain the spool reversing to position information of the main reversing valve, and switch the two cylinder cavities of the auxiliary cylinder according to the obtained information; the oil supply port of the auxiliary oil cylinder is connected in parallel with the oil supply port of the main oil cylinder. The two control ports of the auxiliary reversing valve are respectively connected with the two working ports of the main reversing valve, or are respectively connected with the two cylinder cavities of the main cylinder. The two working ports of the auxiliary reversing valve are respectively connected with the two cylinder cavities of the auxiliary cylinder, one control port of the auxiliary reversing valve is connected with one working port of the main reversing valve, one cylinder cavity of the main cylinder and one control port of the auxiliary exhaust valve, and the other control port of the auxiliary reversing valve is connected with the other working port of the main reversing valve, the other cylinder cavity of the main cylinder and the other control port of the auxiliary exhaust valve. When the spool of the main reversing valve is in the neutral state, the auxiliary exhaust valve exhausts the gas in the other cylinder cavity of the main cylinder, so that the cylinder piston of the main cylinder can move to the direction of the cylinder end cover of the other cylinder cavity under the action of the gas pressure in one cylinder cavity, thereby triggering the reversing trigger device to make the spool of the main reversing valve reverse, and switch to the state that the other cylinder cavity is in the state of air intake and the one cylinder cavity is in the state of air exhaust. The linkage auxiliary cylinder and the auxiliary oil cylinder are further included; the auxiliary cylinder includes an auxiliary reversing valve, which can obtain the spool reversing to position information of the main reversing valve, and switch the two cylinder cavities of the auxiliary cylinder according to the obtained information; the oil supply port of the auxiliary oil cylinder is connected in parallel with the oil supply port of the main oil cylinder. The two control ports of the auxiliary reversing valve are respectively connected with the two working ports of the main reversing valve, or are respectively connected with the two cylinder cavities of the main cylinder. The two control ports of the auxiliary reversing valve are respectively connected with the two working ports of the main reversing valve, or are respectively connected with the two cylinder cavities of the main cylinder.

10. The hydraulic station according to claim 7, wherein The auxiliary reversing valves of the auxiliary cylinders at each stage and the main reversing valve are supplied with air from the same air source.

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