An automatic control device and control method for a hydraulic support reversing valve

Abstract

The present invention relates to an automatic control device and a control method for a hydraulic support reversing valve, which mainly includes a guide rail and a fixing mechanism, a push rod mechanism, an actuator, and a control unit. This device is controlled by the control unit, and the electric push rod provides power. The movement of the spool of the hydraulic support reversing valve is controlled by the upper and lower positions of the pressure plate and the energized state of the induction coil assembly. Due to the mutual cooperation among the guide rail and the fixing mechanism, the push rod mechanism, the actuator, and the control unit, the function of automatically controlling the action of multiple reversing valve groups by one electric push rod is realized. Cooperating with the equipment in the coal mining face, the functions of supporting, pushing the scraper conveyor, and moving the support of the hydraulic support are integrated. The present invention converts the electrical signal into a hydraulic signal, has a relatively simple structure, and increases the degree of automation of the hydraulic support control. The present invention can reduce the labor intensity and operation difficulty of workers, improve safety guarantee, and has a relatively low processing and maintenance cost.

Description

Technical Field

[0001] The present invention belongs to the field of coal mine support, and particularly relates to the field of automatic control of a hydraulic support reversing valve, a coal mine support device. Background Art

[0002] Building a "smart mine" is the main trend of China's coal development, and fully mechanized mining faces more automation and intelligence. The hydraulic support is the most important support device in the underground fully mechanized mining face. It can control and support the roof of the working face during coal mining, improving the efficiency of mining work and ensuring the safety of equipment and personnel. At the same time, as one of the "three machines and one support", the hydraulic support cooperates with the shearer and scraper conveyor to jointly mine coal. Therefore, the key to the automation of the fully mechanized mining face lies in improving the automation degree of hydraulic support control.

[0003] The methods of controlling the hydraulic support mainly include manual control of the manual reversing valve and control by the electro-hydraulic control system.

[0004] As a fluid distribution mechanism in the hydraulic support, the manual reversing valve is used to control the movement of each oil cylinder in the hydraulic support. Currently, the control valve groups used in coal mines underground are mostly assembled by multiple identical plate valves, and the number of plate valves can be combined according to the needs of the support action. This valve has the characteristics of large flow rate, high working pressure, simple and labor-saving operation, good sealing performance, and good dust-proof effect. The reversing valve mainly consists of an operating mechanism, a valve body, connectors, an inlet and return liquid valve rod assembly, a handle self-locking mechanism, etc. Each plate valve individually controls an actuator, such as the telescopic action of the oil cylinder.

[0005] However, the manual reversing valve generally can only be operated by workers standing on the moving support. The actions of the support, falling gangue, flying gangue, etc. are all likely to cause harm to people. Moreover, the manual reversing valve needs to be operated separately for each one, requiring a large number of underground personnel, which also increases potential safety hazards from another aspect. Therefore, this operation method has great safety hazards.

[0006] The electro-hydraulic control system mainly consists of a support controller, a man-machine operation interface, sensors, electromagnetic pilot valves, main valves, power supplies, network converters, data converters, a main control computer, a ground computer, etc. The operator issues commands through the man-machine operation interface, and the system sends electrical signals to the designated electromagnetic pilot valve through the support controller to control the action of the electromagnetic pilot valve, thereby controlling the main valve to complete the control of each oil cylinder.

[0007] The electromagnetic pilot valve is an actuating and controlling element in the electro-hydraulic control system of hydraulic supports and plays an important role. The common faults of the electromagnetic pilot valve are as follows: (1) To ensure the use safety in coal mines, the maximum driving current of the commonly used electromagnetic pilot valve does not exceed 200 mA, so its electromagnetic thrust is small, and thus the opening degree of the electromagnetic pilot valve spool is very small. Therefore, when the emulsion used in the hydraulic support is mixed with contaminated particles, it will block the electromagnetic pilot valve spool, resulting in a thinner or blocked valve aperture, and then the control of the hydraulic cylinder action cannot be completed. Therefore, the electromagnetic pilot valve has high requirements for the purity of high-pressure emulsion. (2) Compared with the main valve, the overall structural size of the electromagnetic pilot valve is one-twentieth of that of a conventional valve, and the structure is relatively complex. There are often sudden changes in the cross-sectional area of the flow channel or the flow channel is bent. When the emulsion passes through such a complex flow channel, the velocity will change, resulting in flow field phenomena such as vortices, backflows, wall detachment and reattachment or generating noise. (3) The smaller the opening of the spool, the higher the radial unbalanced hydraulic pressure it receives, and the spool will show obvious eccentric phenomena, accelerating the wear and deformation of the spool and reducing the service life. (4) The spool is prone to emulsion leakage. During the assembly process of the spool, the spring is not assembled properly, and the valve stem is easily jammed due to excessive impurities. These faults all lead to the failure of the electromagnetic pilot valve, resulting in the failure of the control command of the electro-hydraulic control system and causing the hydraulic support to be unable to complete actions such as support and pushing, ultimately unable to ensure the safe production of the working face.

[0008] The electromagnetic pilot valve has a precise structure, so the machining accuracy is high. At the same time, the requirements for the working fluid use environment are relatively strict, resulting in relatively high costs for each item, and the later maintenance and repair are complex and expensive. Summary of the Invention

[0009] The purpose of the present invention is to aim at the above technical status quo and provide an automatic control device and control method for the reversing valve of a hydraulic support to solve the above deficiencies. The technical solution of the present invention is as follows:

[0010] An automatic control device for the reversing valve of a hydraulic support, characterized in that: it mainly includes a guide rail and a fixing mechanism, a push rod mechanism, an actuating mechanism, and a control unit. The guide rail and the fixing mechanism are installed on both sides of the reversing valve of the hydraulic support. The push rod mechanism is connected to the guide rail and the fixing mechanism. The actuating mechanism is fixedly installed on the upper part of the reversing valve of the hydraulic support. The push rod mechanism and the actuating mechanism are electrically connected to the control unit. The control unit controls the movement of the push rod mechanism and the actuating mechanism, and the movement of the actuating mechanism controls the movement of the spool of the reversing valve of the hydraulic support.

[0011] The guide rail and fixing mechanism of the automatic control device for the hydraulic support reversing valve include a guide rail, a right-angle connection 2, and a fixing plate; the guide rails are fixed on both sides of the hydraulic support reversing valve and arranged in parallel. The bottom of the fixing plate is fixedly connected to the push rod mechanism. On both sides of the top of the fixing plate, right-angle connectors are fixedly connected by bolts. The right-angle connectors are fixedly connected to the guide rail by bolts, that is, the fixing plate is connected and fixed to the guide rail through the right-angle connectors. Through the setting of the fixing plate and the right-angle connectors, the push rod mechanism is fixedly arranged on the top of the hydraulic support reversing valve.

[0012] The push rod mechanism includes an electric push rod, a connecting plate, a pressing plate, and a guide rail slider; the upper end of the electric push rod is fixedly installed at the bottom of the fixing plate. The push rod of the electric push rod is fixedly connected to the connecting plates on both sides through a pin shaft. The connecting plates are fixedly welded to the middle of the pressing plate to achieve the detachable connection between the electric push rod and the pressing plate. A block-shaped protrusion, that is, a pressing block, is embedded below the pressing plate. The left and right sides of the pressing plate are fixed on the guide rail slider, and the guide rail slider can move up and down along the direction of the guide rail; when the push rod of the electric push rod is pushed down, due to the constraint of the guide rail, the push rod drives the pressing plate to move up and down reciprocally.

[0013] The actuator includes a reversing valve connecting plate, a hydraulic support reversing valve body, an induction coil assembly, a return spring, a lever group, a limit support plate, and a connecting rotating shaft; the reversing valve connecting plate is installed on the top of the hydraulic support reversing valve body. Multiple groups of limit support plates are fixedly arranged on the connecting plate of the hydraulic support reversing valve group. The number of limit support plates is determined by the number of valve cores of the hydraulic support reversing valve group. The limit support plates are evenly arranged and distributed according to the layout form of the hydraulic support reversing valve group, and the distance between adjacent limit support plates is the same; an installation through hole is provided on the limit support plate, and the connecting rotating shaft is rotatably installed on the limit support plate through the installation through hole. The induction coil assembly, the return spring, and the lever group are sleeved on the connecting rotating shaft, and the limit support plate limits the lever group; one end of the return spring is connected to the induction coil assembly, and the other end is connected to the lever group; after the induction coil assembly is energized, it attracts the lever group to move towards the induction coil assembly direction and moves to directly above the valve core of the hydraulic support reversing valve. At this time, the return spring is in a compressed state; after the induction coil assembly is powered off, the return spring pushes the lever group back to its original position.

[0014] The control unit mainly includes a PLC controller and related connection lines; the PLC controller is electrically connected to the electric push rod and the induction coil assembly through the connection lines. The PLC controller controls the telescopic movement of the electric push rod and the opening and closing of the induction coil assembly through the built-in execution program.

[0015] If there are m valve cores in the hydraulic support reversing valve group, correspondingly, m pressing blocks are arranged below the pressing plate, and m induction coil assemblies, m return springs, and m lever groups are arranged on the connecting rotating shaft, where m≥1 and m is an integer.

[0016] The specific automatic control method of the present invention is as follows: when the reversing valve of the hydraulic support needs to be reversed and its valve core A needs to be moved, the PLC controller in the control unit sends a signal to the electric push rod in the push rod mechanism and the induction coil assembly corresponding to the valve core A in the actuator; after the induction coil assembly is energized, the lever group is attracted to move in the direction of the induction coil assembly and moved to just above the valve core A of the reversing valve, at which time the reset spring is in a compressed state; the upper end of the electric push rod is fixedly connected to the fixed plate and the guide rail, and the push rod at the lower end is extended. Due to the constraints of the guide rails on both sides, the push rod drives the pressure plate to move downward along the guide rail through the connecting plate; the pressure block under the pressure plate contacts one end of the lever group and applies a downward force to it, the lever group is forced to rotate downward around the connecting shaft, and the end of the lever group pushes the valve core A of the reversing valve to move downward, thereby realizing the reversing function of the reversing valve; at this time, since the remaining induction coil assemblies other than the induction coil assembly corresponding to the valve core A are not energized, the other lever groups other than the lever group corresponding to the valve core A do not contact the pressure block under the pressure plate, so the other valve cores other than the valve core A do not move.

[0017] When the valve core A of the hydraulic support reversing valve needs to be reset, the PLC controller in the control unit sends a signal to the electric push rod in the push rod mechanism and the induction coil assembly corresponding to the valve core A in the lever group; the lower end of the electric push rod retracts, and drives the pressure plate to move upward to the initial position through the guide rail slider, the valve core A of the reversing valve returns to the initial position, one end of the lever group is lifted accordingly, the induction coil assembly is powered off, and the reset spring causes the lever group to return to the initial position.

[0018] The beneficial effect of the present invention is that the control unit controls the movement of the spool of the reversing valve of the hydraulic support through the upper and lower positions of the pressure plate and the energized state of the induction coil assembly. Due to the mutual cooperation between the guide rail and the fixing mechanism, the push rod mechanism, the actuator and the control unit, especially the structure and spatial design of the electric push rod, the pressure block and the induction coil assembly, and the lever group, the function of automatically controlling the movement of multiple reversing valve groups by one electric push rod is realized, and the equipment of the coal mining working face is combined to integrate the functions of the hydraulic support support, push slide, and frame shifting into one, and realize the "three-machine linkage".

[0019] Compared with the manual control method, the present invention converts the electrical signal into a liquid signal, thereby increasing the degree of automation of the hydraulic support control. The present invention can reduce the labor intensity and operation difficulty of the workers and improve safety.

[0020] Compared with the electromagnetic pilot valve, the structure of the present invention is simpler, there is no additional requirement for the working fluid used in the hydraulic support, and the processing difficulty, production and subsequent maintenance costs are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0022] Figure 1 Schematic diagram of the automatic control device for the hydraulic support reversing valve;

[0023] Figure 2 Schematic diagram of the push rod mechanism and the actuator;

[0024] Figure 3 Schematic diagram of the actuator;

[0025] Label description:

[0026] 1 - Guide rail, 2 - Right-angle connecting piece, 3 - Fixed plate, 4 - Electric push rod, 5 - Connecting plate, 6 - Pressure plate, 7 - Guide rail slider, 8 - Reversing valve connecting plate, 9 - Hydraulic support reversing valve body, 10 - Pressure block, 11 - Induction coil assembly, 12 - Return spring, 13 - Lever group, 14 - Limit support plate, 15 - Connecting rotating shaft, 16 - Non-limit support plate. Specific implementation mode

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] An automatic control device for a hydraulic support reversing valve mainly includes a guide rail and a fixing mechanism, a push rod mechanism, an actuator, and a control unit. The guide rail and the fixing mechanism are installed on both sides of the hydraulic support reversing valve. The push rod mechanism is connected to the guide rail and the fixing mechanism. The actuator is fixedly installed on the upper part of the hydraulic support reversing valve. The push rod mechanism and the actuator are electrically connected to the control unit. The control unit controls the movement of the push rod mechanism and the actuator, and the movement of the actuator controls the movement of the spool of the hydraulic support reversing valve.

[0029] The guide rail and the fixing mechanism of the automatic control device for the hydraulic support reversing valve include a guide rail 1, a right-angle connecting piece 2, and a fixed plate 3; the guide rail 1 is fixed on both sides of the hydraulic support reversing valve and arranged in parallel. The bottom of the fixed plate 3 is fixedly connected to the push rod mechanism. Both sides of the top of the fixed plate 3 are fixedly connected with the right-angle connecting piece 2 by bolts. The right-angle connecting piece 2 is fixedly connected to the guide rail 1 by bolts, that is, the fixed plate 3 is connected and fixed to the guide rail 1 through the right-angle connecting piece 2. Through the arrangement of the fixed plate 3 and the right-angle connecting piece 2, the push rod mechanism is fixedly arranged on the top of the hydraulic support reversing valve.

[0030] The push rod mechanism includes an electric push rod 4, a connecting plate 5, a pressing plate 6, and a guide rail slider 7; the upper end of the electric push rod 4 is fixedly installed at the bottom of the fixed plate 3, the push rod of the electric push rod 4 is fixedly connected to the two-side connecting plates 5 through a pin shaft, the connecting plates 5 are fixedly welded to the middle of the pressing plate 6 to realize the detachable connection between the electric push rod 4 and the pressing plate 6, a block-shaped protrusion, namely a pressing block 10, is embedded below the pressing plate 6, the left and right sides of the pressing plate 6 are fixed on the guide rail slider 7, and the guide rail slider 7 can move up and down along the direction of the guide rail 1; when the push rod of the electric push rod 4 is pushed down, due to the constraint of the guide rail, the push rod drives the pressing plate 6 to move up and down reciprocally.

[0031] The actuator includes a reversing valve connecting plate 8, a hydraulic support reversing valve body 9, an induction coil assembly 11, a return spring 12, a lever group 13, a limit support plate 14, and a connecting rotating shaft 15; the reversing valve connecting plate 8 is installed on the top of the hydraulic support reversing valve body 9, multiple groups of limit support plates 14 are fixedly arranged on the reversing valve connecting plate 8 of the hydraulic support reversing valve group, the number of the limit support plates 14 is determined by the number of valve cores of the hydraulic support reversing valve group, the limit support plates 14 are evenly arranged according to the layout form of the hydraulic support reversing valve group, and the distance between each two adjacent limit support plates 14 is the same. Specifically in this example, the number of valve cores of the reversing valve group is 6, then the number of the limit support plates 14 is 6, the number of non-limit support plates 16 is 2, multiple groups of limit support plates 14 are specifically arranged in two rows, each limit support plate 14 in each row is evenly arranged, and the distance between each two adjacent limit support plates 14 is the same. Installation through holes are provided on the limit support plates 14 and the non-limit support plates 16, and the connecting rotating shaft 15 is rotationally installed on the limit support plates 14 and the non-limit support plates 16 through the installation through holes, the induction coil assembly 11, the return spring 12, and the lever group 13 are sleeved on the connecting rotating shaft 15, and the limit support plates 14 limit the lever group; one end of the return spring 12 is connected to the induction coil assembly 11, and the other end is connected to the lever group 13; after the induction coil assembly 11 is powered on, it attracts the lever group 13 to move towards the direction of the induction coil assembly 11 and moves to directly above the valve core of the hydraulic support reversing valve, at this time the return spring 12 is in a compressed state; after the induction coil assembly 11 is powered off, the return spring 12 pushes the lever group 13 back to the original position.

[0032] The control unit mainly includes a PLC controller and related connecting lines; the PLC controller is electrically connected to the electric push rod 4 and the induction coil assembly 11 through the connecting lines. The PLC controller controls the telescopic movement of the electric push rod 4 and the opening and closing of the induction coil assembly 11 through the built-in execution program.

[0033] If there are m valve cores in the hydraulic support reversing valve group, correspondingly, m pressing blocks 10 are arranged below the pressing plate 6, and m induction coil assemblies 11, m return springs 12, and m lever groups 13 are arranged on the connecting rotating shaft 15, where m≥1 and m is an integer.

[0034] The reversing valve of the hydraulic support controls the extension and retraction of the column or jack, and the inflow and outflow of oil. A valve core element of the reversing valve of the hydraulic support only controls one action of the support (column) or jack. Since the support has many actions, it is usually composed of several reversing valves to achieve compound actions. As shown in the attached figure, it is a valve group and automatic control device composed of three reversing valves. The following description takes the valve core (any valve core A in the attached figure) of controlling any reversing valve as an example, which can be expanded to multiple valve groups, and its principle and implementation method are the same.

[0035] The specific automatic control method of the present invention is as follows: when the hydraulic support reversing valve needs to be reversed and its valve core A needs to be moved, the PLC controller in the control unit sends a signal to the electric push rod 4 in the push rod mechanism and the induction coil assembly 11 corresponding to the valve core A in the actuator; after the induction coil assembly 11 is energized, the lever group 13 is attracted to move in the direction of the induction coil assembly 11 and moves to just above the reversing valve core A, at which time the reset spring 12 is in a compressed state; the upper end of the electric push rod 4 is fixedly connected to the fixed plate 3 and the guide rail 1, and the push rod at the lower end is extended. Due to the constraints of the guide rails 1 on both sides, the push rod passes through the connecting plate 5 The pressure plate 6 is driven to move downward along the guide rail 1; the pressure block 10 under the pressure plate 6 contacts one end of the lever group 13 and applies a downward force to it, and the lever group 13 is forced to rotate downward around the connecting shaft 15, and the end of the lever group 13 pushes the spool A of the reversing valve to move downward, thereby realizing the reversing function of the reversing valve; at this time, since the remaining induction coil assemblies 11 except the induction coil assembly 11 corresponding to the valve spool A are not energized, the other lever groups 13 except the lever group 13 corresponding to the valve spool A do not contact the pressure block 10 under the pressure plate 6, and therefore the other valve spools except the valve spool A do not move.

[0036] When the valve core A of the hydraulic support reversing valve needs to be reset, the PLC controller in the control unit sends a signal to the electric push rod 4 in the push rod mechanism and the induction coil assembly 11 corresponding to the valve core A in the lever group 13; the lower end of the electric push rod 4 retracts, and drives the pressure plate 6 to move upward to the initial position through the guide rail slider 7, the reversing valve core A returns to the initial position, one end of the lever group 13 is lifted accordingly, the induction coil assembly 11 is powered off, and the reset spring 12 causes the lever group 13 to return to the initial position.

Claims

1. An automatic control device for a hydraulic support reversing valve, characterized in that: it includes a guide rail and a fixing mechanism, a push rod mechanism, an actuator, and a control unit, wherein the guide rail and the fixing mechanism are installed on both sides of the hydraulic support reversing valve, the push rod mechanism is connected to the guide rail and the fixing mechanism, the actuator is fixedly installed on the upper part of the hydraulic support reversing valve, the push rod mechanism and the actuator are electrically connected to the control unit, the control unit controls the movement of the push rod mechanism and the actuator, and the movement of the actuator controls the movement of the spool of the hydraulic support reversing valve; the guide rail and the fixing mechanism of the automatic control device for the hydraulic support reversing valve include a guide rail, a right-angle connecting piece, and a fixing plate; the actuator includes a reversing valve connecting plate, a hydraulic support reversing valve body, an induction coil assembly, a return spring, a lever group, a limit support plate, and a connecting rotating shaft; the reversing valve connecting plate is installed on the top of the hydraulic support reversing valve body, and multiple groups of limit support plates are fixedly arranged on the reversing valve connecting plate of the hydraulic support; an installation through hole is provided on the limit support plate, the connecting rotating shaft is rotatably installed on the limit support plate through the installation through hole, the induction coil assembly, the return spring, and the lever group are sleeved on the connecting rotating shaft, and the limit support plate limits the lever group; one end of the return spring is connected to the induction coil assembly, and the other end is connected to the lever group; after the induction coil assembly is energized, it attracts the lever group to move towards the induction coil assembly direction, and moves to directly above the spool of the hydraulic support reversing valve. At this time, the return spring is in a compressed state; after the induction coil assembly is powered off, the return spring pushes the lever group back to its original position; the push rod mechanism includes an electric push rod, a connecting plate, a pressing plate, and a guide rail slider. A block-shaped protrusion, that is, a pressing block, is embedded below the pressing plate; the control unit includes a PLC controller, and the PLC controller controls the telescopic movement of the electric push rod and the opening and closing of the induction coil assembly through a built-in execution program; the guide rails are fixed and arranged in parallel on both sides of the hydraulic support reversing valve. The bottom of the fixing plate is fixedly connected to the push rod mechanism. Both sides of the top of the fixing plate are fixedly connected with right-angle connecting pieces through bolts, and the right-angle connecting pieces are fixedly connected with the guide rails through bolts, that is, the fixing plate is connected and fixed to the guide rail through the right-angle connecting piece. Through the setting of the fixing plate and the right-angle connecting piece, the push rod mechanism is fixedly arranged on the top of the hydraulic support reversing valve; the upper end of the electric push rod is fixedly installed at the bottom of the fixing plate. The push rod of the electric push rod is fixedly connected to the two-side connecting plates through a pin shaft. The connecting plates are fixedly welded to the middle of the pressing plate to realize the detachable connection between the electric push rod and the pressing plate. The left and right sides of the pressing plate are fixed on the guide rail slider, and the guide rail slider can move up and down along the guide rail direction; when the push rod of the electric push rod is pushed down, due to the constraint of the guide rail, the push rod drives the pressing plate to move up and down reciprocally.

2. The automatic control device for the hydraulic support reversing valve according to claim 1, characterized in that: the number of the limit support plates is determined by the number of spools of the hydraulic support reversing valve group, and the limit support plates are evenly arranged and distributed according to the layout form of the hydraulic support reversing valve group, and the distance between adjacent limit support plates is the same.

3. The automatic control device for the hydraulic support reversing valve according to claim 1, characterized in that: The control unit includes a PLC controller and related connection lines; the PLC controller is electrically connected to the electric push rod and the induction coil assembly through the connection lines.

4. The automatic control device for the hydraulic support reversing valve according to claim 1, characterized in that: If there are m valve cores in the hydraulic support reversing valve group, correspondingly, m pressing blocks are arranged below the pressing plate, and m induction coil assemblies, m return springs and m lever groups are arranged on the connecting rotating shaft, where m≥1 and m is an integer.

5. An automatic control method applied to the automatic control device for the hydraulic support reversing valve according to any one of claims 1 to 4, characterized in that: When the hydraulic support reversing valve needs to be reversed and its valve core needs to act, the PLC controller in the control unit sends signals to the electric push rod in the push rod mechanism and the induction coil assembly corresponding to the valve core in the actuator; After the induction coil assembly is energized, it attracts the lever group to move towards the induction coil assembly, and moves directly above the reversing valve core. At this time, the return spring is in a compressed state; The upper end of the electric push rod is fixedly connected to the fixed plate and the guide rail, and the lower end push rod extends out. Due to the restraint of the guide rails on both sides, the push rod drives the pressing plate to move downward along the guide rail through the connecting plate; The pressing block below the pressing plate contacts one end of the lever group and applies a downward force to it. The lever group rotates downward around the connecting rotating shaft under the force, and the end of the lever group pushes the reversing valve core downward to move, realizing the reversing function of the reversing valve; At this time, since the other remaining induction coil assemblies except the induction coil assembly corresponding to the valve core are not energized, and the other lever groups except the lever group corresponding to the valve core do not contact the pressing block below the pressing plate, the other valve cores except the valve core do not act.

6. The automatic control method of the automatic control device for the hydraulic support reversing valve according to claim 5, characterized in that: When the valve core of the hydraulic support reversing valve needs to be reset, the PLC controller in the control unit sends signals to the electric push rod in the push rod mechanism and the induction coil assembly corresponding to the valve core in the lever group; The lower end of the electric push rod retracts, drives the pressing plate to move upward to the initial position through the guide rail slider, the reversing valve core returns to the initial position, one end of the lever group is lifted accordingly, the induction coil assembly is powered off, and the return spring makes the lever group return to the initial position.

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