Double-power three-position five-way hydraulic control reversing valve and double-acting execution element control device

Abstract

The invention provides a double-power three-position five-way hydraulic control reversing valve and a double-acting executive component control device.The double-power three-position five-way hydraulic control reversing valve and the double-acting executive component control device aim at overcoming the defect that in the prior art, a single hydraulic control reversing valve cannot achieve one-way independent control over a two-way executive component under double-power driving, and the double-power three-position five-way hydraulic control reversing valve comprises a valve body and a valve element. A valve element hole is formed in the valve body, a valve element is located in the valve element hole, and the double-acting execution element control device comprises a double-power three-position five-way hydraulic control reversing valve, two hydraulic pumps and an oil tank. According to the double-acting actuator control device, two-way driving is achieved, the structure is simple, the double-acting actuator control device adopting the structure can achieve two-way control over the double-acting actuator only through two power elements and one hydraulic control reversing valve, the structure is especially simple, basically no electric appliance element participates in, and control is reliable.

Description

Technical Field

[0001] The invention relates to the technical field of valve bodies and fluid pressure actuators, and in particular to a dual-power hydraulically controlled reversing valve and a bidirectional hydraulic cylinder control device. Background Art

[0002] In modern industrial automation equipment, hydraulic cylinders and hydraulic motors are commonly used actuators to drive the actuators to move. The control of the actuators is completed through hydraulic control valves or control valve assemblies. In the control system, electromagnetic reversing valves are usually used to control the movements of the actuators. The use of electromagnetic reversing valves for control requires the participation of electrical components and electronic control systems. When this type of control device is used for material transportation in ports, power plants, mines and other fields, such as on belt conveyors, due to the relatively poor working environment, the reliability of the operation of electronic components is affected to a certain extent, and failures are relatively frequent, which seriously affects its use effect.

[0003] In addition, in the hydraulic control system, the automatic continuous control of the same actuator mostly adopts the form of a single power element or multiple power elements in parallel and an electromagnetic reversing valve combination. The control system needs to control the electromagnetic reversing valve to realize the corresponding function. The system is complex. When two power elements realize bidirectional independent control of the actuator through one control valve, the current hydraulic control valve cannot meet the requirements.

[0004] At present, an invention patent named automatic reversing valve and with a publication number of CN 110578728 A discloses a three-position five-way double-control valve, which has a first inlet, a first outlet, a second outlet, a first control port and a second control port, wherein the first inlet is used to communicate with a fluid source, the first outlet is used to connect to an inlet on a cylinder body, and the second outlet is used to connect to another inlet on the cylinder body; The main valve has a first working position in which the first inlet and the first outlet are connected, a second working position in which the first inlet and the second outlet are connected, and an intermediate position in which the first inlet and the first outlet and the second outlet are not connected; when the first control port plays a controlling role, the main valve is in the first working position; when the second control port plays a controlling role, the main valve is in the second working position; using the three-position five-way double-control valve of the above structure, in the cylinder control system, this control valve has the function of three-position five-way, but when controlling the hydraulic cylinder and the dual hydraulic motor, this automatic control valve can only realize the function of three-position four-way, and the automatic control valve needs to be combined with a pilot valve to form a valve assembly in order to realize automatic control of the dual hydraulic cylinders and the dual hydraulic motors. The structure is complex, and it is impossible to realize effective control of the double-acting actuator under dual power drive. Summary of the invention

[0005] Aiming at the deficiency that a single hydraulically controlled reversing valve in the prior art cannot realize unidirectional independent control of a bidirectional actuator under dual power drive, a dual-power three-position five-way hydraulically controlled reversing valve and a double-acting actuator control device are provided.

[0006] The present invention is achieved through the following technical solutions: A dual-power, three-position, five-way hydraulically controlled reversing valve comprises a valve body and a valve core, a valve core hole is arranged on the valve body, the valve core is located in the valve core hole, a control chamber E and a control chamber F are arranged at both ends of the valve body, the control chamber E and the control chamber F are both connected to the valve core hole, and a hydraulically controlled reversing valve oil inlet A and a hydraulically controlled reversing valve oil inlet B, a hydraulically controlled reversing valve oil outlet M and a hydraulically controlled reversing valve oil outlet N, and a hydraulically controlled reversing valve oil return port T are respectively arranged on the valve body, which can be connected to the valve core hole. The three-position, five-way hydraulically controlled reversing valve has a hydraulically controlled reversing valve oil inlet A connected to the control chamber F, The hydraulic control reversing valve oil inlet B is connected to the control chamber E, the hydraulic control reversing valve oil inlet A, the hydraulic control reversing valve oil inlet B, the hydraulic control reversing valve oil outlet M, the hydraulic control reversing valve oil outlet N and the hydraulic control reversing valve oil return port T are not connected to each other in the middle position, the hydraulic control reversing valve oil inlet A is connected to the hydraulic control reversing valve oil outlet M and the hydraulic control reversing valve oil outlet N is connected to the hydraulic control reversing valve oil return port T on the left side, the hydraulic control reversing valve oil inlet B is connected to the hydraulic control reversing valve oil outlet N and the hydraulic control reversing valve oil outlet M is connected to the hydraulic control reversing valve oil return port T on the right side; The two ends of the valve core are respectively provided with an inner cavity 1 and an inner cavity 2 F2, the inner cavity 1 is connected to the control cavity E, and the inner cavity 2 F2 is connected to the control cavity F; It also includes an internal oil passage 1 and an internal oil passage 2 which are not connected to each other. The oil inlet A of the hydraulically controlled reversing valve is connected to the valve core hole through the A-port connecting hole 1, the internal oil passage 2 is connected to the valve core hole through the A-port connecting hole 2, and the internal oil passage 2 is connected to the control chamber F through the F-chamber connecting hole F1, so that the oil inlet A of the hydraulically controlled reversing valve is connected to the control chamber F through the A-port connecting hole 1 A1, the A-port connecting hole 2 A2, the valve core hole, the F-chamber connecting hole F1 and the internal flow passage 2, the oil inlet B of the hydraulically controlled reversing valve is connected to the valve core hole through the B-port connecting hole 1 B1, the internal oil passage 1 is connected to the valve core hole through the B-port connecting hole 2 B2, and the internal oil passage 1 is connected to the control chamber E through the E-chamber connecting hole E1, from The oil inlet B of the hydraulically controlled reversing valve is connected with the control chamber E through the B-port connecting hole 1 B1, the B-port connecting hole 2 B2, the valve core hole, the E-chamber connecting hole E1 and the internal flow channel 1, and the oil return port T of the hydraulically controlled reversing valve is connected with the valve core hole through the T-port connecting hole T1; the liquid outlet M of the hydraulically controlled reversing valve is connected with the valve core hole through the M-port connecting hole M1; the liquid outlet N of the hydraulically controlled reversing valve is connected with the valve core hole through the N-port connecting hole N1, and the free ends of the A-port connecting hole 1 A1, the A-port connecting hole 2 A2, the F-chamber connecting hole F1, the B-port connecting hole 1 B1, the B-port connecting hole 2 B2, the E-chamber connecting hole E1, the T-port connecting hole T1, the M-port connecting hole M1 and the N-port connecting hole N1 are all blind holes; The control chamber E is adjacent to the oil inlet A of the hydraulically controlled reversing valve, and the control chamber F is adjacent to the oil inlet B of the hydraulically controlled reversing valve; The hydraulically controlled reversing valve oil inlet A, the hydraulically controlled reversing valve oil outlet M, the hydraulically controlled reversing valve oil return port T, the hydraulically controlled reversing valve oil outlet N, and the hydraulically controlled reversing valve oil inlet B are sequentially arranged along the length direction of the valve body.

[0007] A double-acting actuator control device comprises a dual-power three-position five-way hydraulically controlled reversing valve, two hydraulic pumps and an oil tank. The dual-power three-position five-way hydraulically controlled reversing valve is adopted. The hydraulically controlled reversing valve oil outlet N and the hydraulically controlled reversing valve oil outlet M are respectively used to communicate with two oil chambers of the double-acting actuator. The oil outlets of the two hydraulic pumps are respectively communicated with the hydraulically controlled reversing valve oil inlet A and the hydraulically controlled reversing valve oil inlet B. The hydraulically controlled reversing valve oil return port T is communicated with the oil return port of the oil tank. The double-acting actuator is a bidirectional actuator cylinder or a bidirectional hydraulic motor; A safety valve is provided at each hydraulic pump oil outlet. The safety valve oil outlet of each safety valve is connected with the hydraulic pump oil outlet of the corresponding hydraulic pump. The safety valve oil inlet of each safety valve is connected with the oil passage between the hydraulic pump oil outlet of the corresponding hydraulic pump and the corresponding oil inlet of the hydraulic control reversing valve. When the pressure in the hydraulic system increases to reach the set value of the safety valve, the safety valve opens and the hydraulic oil flows back to the oil tank. Compared with the prior art, the present invention has the following advantages: The three-position five-way reversing valve adopting the structure of the present invention has the following advantages: a three-position five-way hydraulically controlled reversing valve can achieve communication with the two chambers of the double-acting actuator, thereby enabling the two power elements to be connected with the two chambers of the double-acting actuator, so that the double-acting actuator can move in two opposite directions under the action of the two power elements, thereby enabling the double-acting actuator to achieve bidirectional drive, and the structure is simple.

[0008] The double-acting actuator control device of the present invention can realize bidirectional control of the double-acting actuator by only using two power elements and one hydraulically controlled reversing valve. The structure is particularly simple, and basically no electrical elements are involved, so the control is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of an embodiment of a three-position five-way hydraulically controlled directional control valve of the present invention, wherein the three-position five-way hydraulically controlled directional control valve is in the middle position; Figure 2 It is a schematic diagram of the on-off state of the three-position five-way hydraulically controlled reversing valve of the present invention when it is in the left position; Figure 3 It is a schematic diagram of the on-off state of the three-position five-way hydraulically controlled reversing valve of the present invention when it is in the right position; Figure 4This is a schematic diagram of the structure of an internal oil passage embodiment of the present invention; Figure 5 It is a schematic structural diagram of an embodiment of a double-acting actuator control device of the present invention.

[0010] Reference numerals: Hydraulic pump 101, hydraulic pump 2 102; three-position five-way hydraulically controlled reversing valve 2, safety valve 1 301; safety valve 2 302; oil tank 4, oil suction port 5, hydraulic pump oil outlet 6; safety valve oil outlet 7, hydraulically controlled reversing valve oil inlet A, hydraulically controlled reversing valve oil inlet B, hydraulically controlled reversing valve oil outlet M, hydraulically controlled reversing valve oil outlet N, hydraulically controlled reversing valve oil return port T, actuator hydraulic cylinder 19, valve core 50; valve body 51; valve core hole 52; internal oil passage 1 53; internal oil passage 2 54; A port connecting hole 1 A1; A port connecting hole 2 A2; B port connecting hole 1 B1; B port connecting hole 2 B2; E cavity connecting hole E1; F cavity connecting hole F1; M port connecting hole M1; N port connecting hole N1; T port connecting hole T1, control cavity E; inner cavity 1 E2; control cavity F; inner cavity 2 F2. DETAILED DESCRIPTION

[0011] The technical solution of the present invention is described in detail below in conjunction with specific embodiments and drawings. The following technical solution of the present invention is only a specific implementation method and is not a limitation of the implementation method of the present invention. For the convenience of description, the present invention uses a hydraulic oil port that is consistent with the direction of the hydraulic oil pumped out by the hydraulic pump as the oil inlet.

[0012] like Figure 1-5 As shown, in the present invention, the double-acting actuator control device includes a dual-power three-position five-way hydraulically controlled reversing valve (hereinafter referred to as hydraulically controlled reversing valve) 2, an oil tank 4 containing hydraulic oil, and two hydraulic pumps 1. The three-position five-way hydraulically controlled reversing valve and the two hydraulic pumps control the output end of an actuator cylinder or hydraulic motor to move independently in two different directions. The actuator cylinder and hydraulic motor are collectively referred to as actuators.

[0013] The structure and use process of the three-position five-way hydraulically controlled directional valve and the double-acting actuator control device of the present invention are described below by taking the control of the actuator cylinder as an example.

[0014] The three-position five-way hydraulically controlled reversing valve in the present invention includes a valve body 51 and a valve core 50, a valve core hole 52 is arranged on the valve body, two control chambers are arranged at both ends of the valve body and connected with the valve core hole, namely control chamber E and control chamber F, two oil inlets, namely hydraulically controlled reversing valve oil inlet A and hydraulically controlled reversing valve oil inlet B, two oil outlets, namely hydraulically controlled reversing valve oil outlet M and hydraulically controlled reversing valve oil outlet N, and a hydraulically controlled reversing valve oil return port T is arranged. The oil inlet, oil outlet, oil return port, control chamber E and control chamber F of the hydraulically controlled reversing valve can be connected through the internal oil channel and the valve core hole. Figure 1 and 2As shown, the three-position five-way hydraulically controlled reversing valve has an intermediate position in which the hydraulically controlled reversing valve oil inlet A is connected to the control chamber F, the hydraulically controlled reversing valve oil inlet B is connected to the control chamber E, and the oil inlet, oil outlet and oil return port of the hydraulically controlled reversing valve are not connected; a left position in which the hydraulically controlled reversing valve oil inlet A is connected to the hydraulically controlled reversing valve oil outlet M and the hydraulically controlled reversing valve oil outlet N is connected to the hydraulically controlled reversing valve oil return port T; and a right position in which the hydraulically controlled reversing valve oil inlet B is connected to the hydraulically controlled reversing valve oil outlet N and the hydraulically controlled reversing valve oil outlet M is connected to the hydraulically controlled reversing valve oil return port T. The rod chamber of the actuator oil cylinder is connected to the hydraulic control reversing valve oil outlet N, the rodless chamber is connected to the hydraulic control reversing valve oil outlet M, the hydraulic pump oil outlet 6 of the hydraulic pump 101 is connected to the hydraulic control reversing valve oil inlet A, the hydraulic pump oil outlet 6 of the hydraulic pump 2 102 is connected to the hydraulic control reversing valve oil inlet B, and the hydraulic control reversing valve oil return port T is connected to the oil return port of the oil tank. Under normal circumstances, the hydraulic control reversing valve is in the middle position. When the hydraulic pump is working, the hydraulic oil enters the oil inlet A of the hydraulic control reversing valve and enters the control chamber F through the internal oil channel and the valve core hole, pushing the valve core to move to the left, and the hydraulic control reversing valve is in the left position, so that the oil inlet A of the hydraulic control reversing valve is connected with the oil outlet M of the hydraulic control reversing valve, and the oil outlet N of the hydraulic control reversing valve is connected with the oil return port T of the hydraulic control reversing valve, and the hydraulic oil is filled into the rodless chamber of the actuator cylinder, and the hydraulic oil in the rod chamber returns to the oil return port T of the hydraulic control reversing valve through the oil outlet N of the hydraulic control reversing valve, and returns to the oil tank 4 through the oil return port T of the hydraulic control reversing valve, and the output end of the actuator cylinder moves to the right; the hydraulic pump works During operation, the hydraulic oil enters the hydraulic control reversing valve oil inlet B and enters the control chamber E through the internal oil channel and the valve core hole, pushing the valve core to move to the right, the hydraulic control reversing valve is in the right position, the hydraulic control reversing valve oil inlet B is connected with the hydraulic control reversing valve oil outlet N, the hydraulic control reversing valve oil outlet M is connected with the hydraulic control reversing valve oil return port T, the hydraulic oil enters the rod chamber of the actuator cylinder, pushing the output end to move to the left, thereby completing the output end to move to the left, and at the same time, the rodless chamber hydraulic oil returns to the hydraulic control reversing valve oil return port T through the hydraulic control reversing valve oil outlet M, and returns to the oil tank through the hydraulic control reversing valve oil return port T. Preferably, the control chamber E is adjacent to the hydraulic control reversing valve oil inlet A, the control chamber F is adjacent to the hydraulic control reversing valve oil inlet B, and the hydraulic control reversing valve oil inlet A, the hydraulic control reversing valve oil outlet M, the hydraulic control reversing valve oil return port T, the hydraulic control reversing valve oil outlet N, and the hydraulic control reversing valve oil inlet B are arranged in sequence along the length direction of the valve body. Preferably, the hydraulic control reversing valve oil return port T is located between the hydraulic control reversing valve oil inlet A and the hydraulic control reversing valve oil inlet B and is located in the same row as the two. This can simplify the structure of the valve. Preferably, the hydraulic control reversing valve oil inlet A, the hydraulic control reversing valve oil outlet M, the hydraulic control reversing valve oil return port T, the hydraulic control reversing valve oil outlet N, and the hydraulic control reversing valve oil inlet B have the same opening direction, the hydraulic control reversing valve oil inlet A, the hydraulic control reversing valve oil return port T, and the hydraulic control reversing valve oil inlet B are located in the same row or line, and the hydraulic control reversing valve oil outlet M and the hydraulic control reversing valve oil outlet N are located in the same row or line.

[0015] In the present invention, the three-position five-way hydraulically controlled reversing valve preferably adopts the following oil channel structure to achieve interconnection and intercommunication, including an internal oil channel 1 53 and an internal oil channel 2 54 that are not connected to each other, and the two are preferably straight-through oil channels, the hydraulically controlled reversing valve oil inlet A is connected to the valve core hole 51 through the A-port connecting hole 1 A1, the internal oil channel 2 54 is connected to the valve core hole through the A-port connecting hole 2 A2, and the internal oil channel 2 54 is connected to the control chamber F through the F-chamber connecting hole F1, so that the hydraulically controlled reversing valve oil inlet A is connected to the control chamber F through the A-port connecting hole 1 A1, the A-port connecting hole 2 A2, the valve core hole, the F-chamber connecting hole F1 and the internal flow channel 2, and the hydraulically controlled reversing valve oil inlet A is connected to the control chamber F, and the hydraulically controlled reversing valve oil inlet A is connected to the control chamber F through the A-port connecting hole 1 A1, the A-port connecting hole 2 A2, the valve core hole, the F-chamber connecting hole F1 and the internal flow channel 2. The valve oil inlet B is connected with the valve core hole through the B port connecting hole 1 B1, the internal oil channel 1 53 is connected with the valve core hole through the B port connecting hole 2 B2, and the internal oil channel 1 53 is connected with the control chamber E through the E chamber connecting hole E1, thereby connecting the hydraulically controlled reversing valve oil inlet B with the control chamber E through the B port connecting hole 1 B1, the B port connecting hole 2 B2, the valve core hole, the E chamber connecting hole E1 and the internal flow channel 1, and the hydraulically controlled reversing valve oil return port T is connected with the valve core hole through the T port connecting hole T1; the hydraulically controlled reversing valve liquid outlet M is connected with the valve core hole through the M port connecting hole M1; the hydraulically controlled reversing valve liquid outlet N is connected with the valve core hole through the N port connecting hole N1. The free ends of the connecting holes, such as the A port connecting hole A1, the A port connecting hole A2, the F cavity connecting hole F1, the B port connecting hole B1, the B port connecting hole B2, the E cavity connecting hole E1, the T port connecting hole T1, the M port connecting hole M1, and the N port connecting hole N1, are all blind holes.

[0016] The working process of the three-position five-way hydraulically controlled reversing valve is as follows: when it is not working, the three-position five-way hydraulically controlled reversing valve is in the middle position. When the actuator cylinder needs to move to the right, the hydraulic pump 1 on the left works, and the hydraulic oil enters the hydraulically controlled reversing valve oil inlet A and enters the valve core hole through the A-port connecting hole A1, and then enters the internal oil channel 1 through the A-port connecting hole A2, and then enters the control chamber F through the F-chamber connecting hole F1, pushing the valve core to move to the left to reach the left position, so that the hydraulically controlled reversing valve oil inlet A is connected with the hydraulically controlled reversing valve oil outlet M, the hydraulically controlled reversing valve oil outlet N is connected with the hydraulically controlled reversing valve oil return port T, and the hydraulic oil enters the rodless chamber of the actuator cylinder, thereby pushing the actuator cylinder piston rod to move to the right, and the rod chamber hydraulic oil returns to the hydraulically controlled reversing valve oil return port T through the hydraulically controlled reversing valve oil outlet N and then flows back to the oil tank; when the actuator cylinder needs to move to the left, the hydraulic pump 2 on the right works. The hydraulic oil enters the oil inlet B of the hydraulic control reversing valve and enters the valve core hole through the B port connecting hole B1, then enters the internal oil channel 1 through the B port connecting hole B2, and then enters the control chamber E through the E chamber connecting hole B1, pushing the valve core to move to the right and enter the right position. The oil inlet B of the hydraulic control reversing valve and the oil outlet N of the hydraulic control reversing valve are both connected to the valve core hole, so that the two are connected. The oil outlet M of the hydraulic control reversing valve and the oil return port T of the hydraulic control reversing valve are both connected to the valve core hole, so that the two are connected. The hydraulic oil enters the rod chamber of the actuator cylinder, and the hydraulic oil in the rodless chamber flows back to the oil tank through the hydraulic control reversing valve oil outlet M and the hydraulic control reversing valve oil return port T, so that the hydraulic oil in the oil tank 4 can enter the cavity at one end of the actuator cylinder 19 through the three-position five-way hydraulic control reversing valve 2, pushing the actuator cylinder 19 to move to the left. At the same time, the hydraulic oil in the other cavity returns to the oil tank 4 through the three-position five-way hydraulic control reversing valve 2. The three-position five-way hydraulically controlled directional control valve of the present invention can realize unidirectional independent control of a bidirectional actuator by using one control valve under the action of two power elements, has a simple structure, reliable control and automatic continuity.

[0017] Preferably, inner cavity E2 and inner cavity F2 are respectively provided at both ends of the valve core, inner cavity E2 is connected with the control cavity E, and inner cavity F2 is connected with the control cavity F. This not only reduces the mass of the valve core, but also reduces the inertia of the valve core operation, improves the response speed of the valve, and makes the valve switch faster.

[0018] It is best to set a safety valve 3 at the hydraulic pump oil outlet 6 of each hydraulic pump, the safety valve oil outlet 7 of each safety valve is connected to the oil return port of the oil tank, and the safety valve oil inlet of each safety valve is connected to the oil passage between the hydraulic pump oil outlet 6 of the hydraulic pump on the corresponding side and the corresponding oil inlet of the hydraulic control reversing valve. For example, the safety valve oil inlet of the safety valve 1 301 is connected to the oil passage between the hydraulic pump oil outlet 6 of the hydraulic pump 1 and the oil inlet A of the hydraulic control reversing valve, the safety valve oil outlet 7 of the safety valve 1 is connected to the oil return port of the oil tank, the safety valve oil inlet of the safety valve 2 302 is connected to the oil passage between the hydraulic pump oil outlet 6 of the hydraulic pump 2 located on the right side and the oil inlet B of the hydraulic control reversing valve, and the safety valve oil outlet 7 of the safety valve 2 302 is connected to the oil return port of the oil tank. In this way, when the pressure in the system increases to the set value of the safety valve, the safety valve opens, and the hydraulic oil flows back to the oil tank to ensure that the pressure in the system is within a safe range.

[0019] The embodiments described above are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A dual-power three-position five-way hydraulically controlled reversing valve, comprising a valve body and a valve core, wherein a valve core hole is provided on the valve body, and the valve core is located in the valve core hole, and is characterized in that: A control chamber E and a control chamber F are arranged at both ends of the valve body, and both the control chamber E and the control chamber F are connected to the valve core hole. The valve body is respectively provided with a hydraulically controlled reversing valve oil inlet A and a hydraulically controlled reversing valve oil inlet B, a hydraulically controlled reversing valve oil outlet M and a hydraulically controlled reversing valve oil outlet N, and a hydraulically controlled reversing valve oil return port T, which can be connected to the valve core hole. The three-position five-way hydraulically controlled reversing valve has a hydraulically controlled reversing valve oil inlet A connected to the control chamber F, a hydraulically controlled reversing valve oil inlet B connected to the control chamber E, and a hydraulically controlled reversing valve. The middle position where the oil inlet A, the hydraulic control reversing valve oil inlet B, the hydraulic control reversing valve oil outlet M, the hydraulic control reversing valve oil outlet N and the hydraulic control reversing valve oil return port T are not connected; the left position where the hydraulic control reversing valve oil inlet A is connected to the hydraulic control reversing valve oil outlet M and the hydraulic control reversing valve oil outlet N is connected to the hydraulic control reversing valve oil return port T; the right position where the hydraulic control reversing valve oil inlet B is connected to the hydraulic control reversing valve oil outlet N and the hydraulic control reversing valve oil outlet M is connected to the hydraulic control reversing valve oil return port T.

2. A dual-power three-position five-way hydraulically controlled directional valve as claimed in claim 1, characterized in that: The two ends of the valve core are respectively provided with an inner cavity one and an inner cavity two F2, the inner cavity one is communicated with the control cavity E, and the inner cavity two F2 is communicated with the control cavity F.

3. A dual-power three-position five-way hydraulically controlled reversing valve as claimed in claim 1, characterized in that: It also includes an internal oil passage 1 and an internal oil passage 2 which are not connected to each other. The oil inlet A of the hydraulically controlled reversing valve is connected to the valve core hole through the A-port connecting hole 1, the internal oil passage 2 is connected to the valve core hole through the A-port connecting hole 2, and the internal oil passage 2 is connected to the control chamber F through the F-chamber connecting hole F1, so that the oil inlet A of the hydraulically controlled reversing valve is connected to the control chamber F through the A-port connecting hole 1 A1, the A-port connecting hole 2 A2, the valve core hole, the F-chamber connecting hole F1 and the internal flow passage 2, the oil inlet B of the hydraulically controlled reversing valve is connected to the valve core hole through the B-port connecting hole 1 B1, the internal oil passage 1 is connected to the valve core hole through the B-port connecting hole 2 B2, and the internal oil passage 1 is connected to the control chamber E through the E-chamber connecting hole E1, from The oil inlet B of the hydraulically controlled reversing valve is connected with the control chamber E through the B-port connecting hole 1 B1, the B-port connecting hole 2 B2, the valve core hole, the E-chamber connecting hole E1 and the internal flow channel 1, the oil return port T of the hydraulically controlled reversing valve is connected with the valve core hole through the T-port connecting hole T1; the liquid outlet M of the hydraulically controlled reversing valve is connected with the valve core hole through the M-port connecting hole M1; the liquid outlet N of the hydraulically controlled reversing valve is connected with the valve core hole through the N-port connecting hole N1, and the free ends of the A-port connecting hole 1 A1, the A-port connecting hole 2 A2, the F-chamber connecting hole F1, the B-port connecting hole 1 B1, the B-port connecting hole 2 B2, the E-chamber connecting hole E1, the T-port connecting hole T1, the M-port connecting hole M1 and the N-port connecting hole N1 are all blind holes.

4. A dual-power three-position five-way hydraulically controlled directional valve as claimed in claim 1, characterized in that: The control chamber E is adjacent to the oil inlet A of the hydraulically controlled reversing valve, and the control chamber F is adjacent to the oil inlet B of the hydraulically controlled reversing valve.

5. A dual-power three-position five-way hydraulically controlled directional valve as claimed in claim 4, characterized in that: The hydraulically controlled reversing valve oil inlet A, the hydraulically controlled reversing valve oil outlet M, the hydraulically controlled reversing valve oil return port T, the hydraulically controlled reversing valve oil outlet N, and the hydraulically controlled reversing valve oil inlet B are sequentially arranged along the length direction of the valve body.

6. A double-acting actuator control device, characterized in that: It comprises a dual-powered, three-position, five-way hydraulically controlled directional valve, two hydraulic pumps and an oil tank, and adopts the dual-powered, three-position, five-way hydraulically controlled directional valve as described in any one of claims 1 to 5. The hydraulically controlled directional valve oil outlet N and the hydraulically controlled directional valve oil outlet M are respectively used to connect the two oil chambers of the double-acting actuator, the oil outlets of the two hydraulic pumps are respectively connected to the hydraulically controlled directional valve oil inlet A and the hydraulically controlled directional valve oil inlet B, and the hydraulically controlled directional valve oil return port T is connected to the oil return port of the oil tank.

7. A double-acting actuator control device as claimed in claim 6, characterized in that: The double-acting actuator is a bidirectional actuator cylinder or a bidirectional hydraulic motor.

8. A double-acting actuator control device as claimed in claim 6, characterized in that: A safety valve is provided at each hydraulic pump oil outlet. The safety valve oil outlet of each safety valve is connected with the hydraulic pump oil outlet of the corresponding hydraulic pump. The safety valve oil inlet of each safety valve is connected with the oil passage between the hydraulic pump oil outlet of the corresponding hydraulic pump and the corresponding oil inlet of the hydraulic control reversing valve. When the pressure in the hydraulic system increases to reach the set value of the safety valve, the safety valve opens and the hydraulic oil flows back to the oil tank.

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