Electro-hydraulic control simulation device for hydraulic support

Abstract

The invention discloses a hydraulic support electro-hydraulic control simulation device which comprises at least one single support electro-hydraulic control simulation device, and each single support electro-hydraulic control simulation device comprises a man-machine interaction interface unit, a support control unit, an electromagnetic valve simulation module, an oil cylinder simulation module and an analog-digital conversion module. The hydraulic support electro-hydraulic control simulation device arranged in the mode is beneficial for providing comprehensive and efficient training of a hydraulic support electro-hydraulic control system for operators.

Description

Technical Field

[0001] The present application relates to an electro-hydraulic control simulation device for a hydraulic support. Background Art

[0002] At present, with the improvement of the automation level of coal mining, hydraulic supports have generally achieved electro-hydraulic control instead of manual operation, which has increased the speed of frame movement on the working face and improved the support conditions of the working face roof, thereby doubling the output of the working face.

[0003] The operation of the hydraulic support electro-hydraulic control system requires highly professional skills. The hydraulic support electro-hydraulic control system is generally composed of support control devices, sensors (including pressure, stroke, angle, coal mining machine position sensors, etc.), explosion-proof power supplies, electro-hydraulic control reversing valves, isolation couplers, signal converters, centralized monitoring devices, cables and connectors, etc. The structure is complex and requires operators to have skills in automatic parameter setting, working face parameter adjustment, electro-hydraulic control fault troubleshooting, etc.

[0004] At present, the operating procedures and technical essentials of hydraulic support operators are mainly obtained through the instructions and theoretical training provided by the manufacturer, while the scope of practice of underground practical training is very limited. Usually, the number of hydraulic supports in a coal mine comprehensive mining face is about 200, and the weight of each hydraulic support exceeds 30 tons. The volume and weight of the entire hydraulic support system are very large; and the hydraulic support excavation face is a special working area in the mine. In this working face, due to the limitations of the tunnel space and the particularity of the operation method, it is necessary to fully consider the safety risks of the operation process in this harsh working environment. For example, the tilt of the support may cause injuries. Therefore, operators usually cannot freely set parameters and verify the effects during the underground training process, and incorrect operations may cause equipment failures or accidents. The above training model makes the entire training cycle longer and the training effect is limited.

[0005] Based on the above situation, it is necessary to establish a simulation device for the electro-hydraulic control system of the hydraulic support in order to provide comprehensive and efficient training to the operators. Summary of the invention

[0006] The purpose of this application is to provide a hydraulic support electro-hydraulic control simulation device, which can be used to provide effective simulation training for hydraulic support operators on the ground, can freely set parameters, can simulate various actions of the hydraulic support for simulation operation and verify the effect, so that the operator can have the use and debugging skills of the hydraulic support electro-hydraulic control system in a short time. In addition, the simulation device can be used to simulate the fault state of the support and improve the operator's electro-hydraulic control system troubleshooting skills.

[0007] To achieve the above-mentioned purpose, the present application provides a hydraulic support electro-hydraulic control simulation device, which simulation device includes at least one single-frame support electro-hydraulic control simulation device, and the single-frame support electro-hydraulic control simulation device includes a human-machine interface unit, a support control unit, a solenoid valve simulation module, a cylinder simulation module and an analog-to-digital conversion module; the human-machine interface unit is used for the operator to issue instructions for operating the hydraulic support and receive relevant information of the hydraulic support; the support control unit is configured to receive instructions issued by the human-machine interface unit, and realize support action control according to its own control logic; the solenoid valve simulation module is used to simulate the action of the solenoid valve; the cylinder simulation module is used to simulate the action of the cylinder and output the corresponding analog quantity; the analog-to-digital conversion module is used to convert the corresponding analog quantity Converted into digital quantity; the human-machine interaction interface unit is connected to the bracket control unit, one end of the bracket control unit is connected to the solenoid valve simulation module, and the other end is connected to the analog-to-digital conversion module; the cylinder simulation module is simultaneously connected to the solenoid valve simulation module and the analog-to-digital conversion module; the bracket control unit sends control information to the solenoid valve simulation module after receiving the instruction issued by the human-machine interaction interface unit, and the solenoid valve simulation module drives the cylinder simulation module to act after receiving the control information, and the analog-to-digital conversion module collects the analog quantity generated by the action of the cylinder simulation module and converts it into digital quantity and transmits it to the bracket control unit, and the human-machine interaction interface unit receives the relevant information of the hydraulic support issued by the bracket control unit.

[0008] For example, in the simulation device provided in at least one embodiment of the present application, the human-computer interaction interface unit includes operation keys and a display screen, the operation keys are used to issue instructions for operating the hydraulic support, and the display screen is used to display operating data of the hydraulic support.

[0009] For example, in the simulation device provided in at least one embodiment of the present application, the human-computer interaction interface unit also includes a locking emergency stop button and a buzzer.

[0010] For example, in the simulation device provided in at least one embodiment of the present application, the cylinder simulation module is configured to realize the action of the simulated cylinder by controlling the extension or retraction of the electric push rod by an electronic control device.

[0011] For example, in the simulation device provided in at least one embodiment of the present application, the cylinder simulation module includes a column cylinder simulation module and a push cylinder simulation module, and the two are connected in parallel.

[0012] For example, in the simulation device provided in at least one embodiment of the present application, the column cylinder simulation module is configured to simulate the movement of the column cylinder and output the corresponding column cylinder pressure simulation quantity, and the push cylinder simulation module is configured to simulate the movement of the push cylinder and output the related push cylinder stroke simulation quantity.

[0013] For example, in the simulation device provided in at least one embodiment of the present application, the electric push rod includes a first electric push rod, the column cylinder simulation module includes the first electric push rod and a first variable resistor, the movable end of the first electric push rod is connected to the movable end of the first variable resistor, when the first electric push rod moves, the resistance of the first variable resistor changes accordingly, and the analog-to-digital conversion module converts the resistance of the first variable resistor into a digital quantity in real time and transmits it to the bracket control unit.

[0014] For example, in the simulation device provided in at least one embodiment of the present application, the first variable resistor is a first sliding variable resistor.

[0015] For example, in the simulation device provided in at least one embodiment of the present application, the movable end of the first electric push rod is connected to the sliding end of the first sliding resistor by bolts.

[0016] For example, in the simulation device provided in the embodiment of the present application, the first variable resistor is a first rotary variable resistor.

[0017] For example, in the simulation device provided in at least one embodiment of the present application, the movable end of the first electric push rod is connected to the movable end of the first rotary variable resistor through a rack.

[0018] For example, in the simulation device provided in at least one embodiment of the present application, the electric push rod includes a second electric push rod, the push cylinder simulation module includes the second electric push rod and a second variable resistor, the movable end of the second electric push rod is connected to the movable end of the second variable resistor, when the second electric push rod moves, the resistance of the second variable resistor changes accordingly, and the analog-to-digital conversion module converts the resistance of the second variable resistor into a digital quantity in real time and transmits it to the bracket control unit.

[0019] For example, in the simulation device provided in at least one embodiment of the present application, the second variable resistor is a second sliding variable resistor.

[0020] For example, in the simulation device provided in at least one embodiment of the present application, the movable end of the second electric push rod is connected to the sliding end of the second sliding rheostat by bolts.

[0021] For example, in the simulation device provided in at least one embodiment of the present application, the second variable resistor is a second rotary variable resistor.

[0022] For example, in the simulation device provided in at least one embodiment of the present application, the movable end of the second electric push rod is connected to the movable end of the second rotary variable resistor through a rack.

[0023] For example, the simulation device provided in at least one embodiment of the present application also includes a solenoid valve action indication panel connected to the solenoid valve simulation module, which includes a substrate and an indicator light arranged thereon. After receiving control information, the solenoid valve simulation module drives the indicator light to light up. The lighting and extinguishing of the indicator light respectively indicate the state of the corresponding solenoid valve action. When the indicator light is on, it indicates that the solenoid valve is open; when it is off, it indicates that the solenoid valve is closed.

[0024] For example, in the simulation device provided in at least one embodiment of the present application, the colors of the indicator light include red, green and white, which are used to display the operating status of each solenoid valve in real time, red indicates extension, green indicates retraction, and white indicates spray.

[0025] For example, in the simulation device provided in at least one embodiment of the present application, the indicator light is an LED light.

[0026] For example, in the simulation device provided by at least one embodiment of the present application, the indicator lights include a guard cylinder extension LED indicator light, a guard cylinder retraction LED indicator light, a spray LED indicator light, a side guard plate extension LED indicator light, a side guard plate retraction LED indicator light, a balancing cylinder extension LED indicator light, a balancing cylinder retraction LED indicator light, a push cylinder retraction LED indicator light, a push cylinder damping retraction LED indicator light, a push cylinder extension LED indicator light, a bottom cylinder extension LED indicator light, a column cylinder retraction LED indicator light, a column cylinder extension LED indicator light or any combination thereof.

[0027] For example, the simulation device provided in at least one embodiment of the present application includes at least two of the single-frame electro-hydraulic control simulation devices.

[0028] For example, the simulation device provided in at least one embodiment of the present application also includes a remote control computer, a network hub, a communication main control unit and a master station bracket control unit; the remote control computer obtains the operating data of each bracket control unit by accessing the WEB service port, and displays the status information and setting parameters of the electro-hydraulic control of each single bracket; the communication main control unit is used to organize the operating data of each single bracket into an internal database, and provide WEB data services through Ethernet; the master station bracket control unit is used to manage the bracket control unit, read the operating data of the bracket control unit and upload it to the communication main control unit, receive the remote control computer parameter setting instructions and transmit them to the corresponding bracket control unit; the remote control computer is connected to the communication main control unit through the network hub; the communication main control unit is connected to the master station bracket control unit; the bracket control unit is connected to the master station bracket control unit, and is connected to other bracket control units in parallel.

[0029] For example, the simulation device provided in at least one embodiment of the present application further includes a master station human-computer interaction interface connected to the master station bracket control unit.

[0030] For example, the simulation device provided in at least one embodiment of the present application further includes a shell, the outer wall of which is provided with the remote control computer display screen, the main station human-computer interaction interface, the human-computer interaction interface unit and the solenoid valve action indication panel.

[0031] For example, in the simulation device provided in at least one embodiment of the present application, the shell at least partially has a metal base.

[0032] For example, in the simulation device provided in at least one embodiment of the present application, the shell is square.

[0033] For example, in the simulation device provided in at least one embodiment of the present application, a roller and a clip for fixing the roller are further provided at the bottom end of the shell.

[0034] For example, in the simulation device provided in at least one embodiment of the present application, a support is further provided at the bottom end of the shell.

[0035] For example, in the simulation device provided in at least one embodiment of the present application, the outer wall of the shell is provided with at least two of the human-machine interaction interface units and corresponding at least two of the solenoid valve action indication panels.

[0036] For example, in the simulation device provided by at least one embodiment of the present application, 20 human-computer interaction interface units and corresponding 20 solenoid valve action indication panels are provided on the front of the shell, which are arranged in 4 rows and 5 columns, and the corresponding solenoid valve action indication panel is arranged above each human-computer interaction interface unit, and the remote control computer display screen and the main station human-computer interaction interface located below it are arranged on the upper right part of the front of the shell.

[0037] For example, the simulation device provided in at least one embodiment of the present application also includes a virtual simulation system connected to the communication main control unit; the communication main control unit uploads the operation data of each single-rack bracket to the virtual simulation system in real time, thereby realizing real-time synchronous operation of the simulation device and the virtual device in the virtual reality scene.

[0038] The simulation device provided in the embodiment of the present application can be provided with at least one single-frame bracket electro-hydraulic control simulation device, which includes a human-machine interface unit, a bracket control unit, a solenoid valve simulation module, a cylinder simulation module and an analog-to-digital conversion module, and a solenoid valve action indication panel can also be provided to indicate the state of the corresponding solenoid valve action, and the simulation device can include at least two single-frame bracket electro-hydraulic control simulation devices, a remote control computer, a network hub, a communication main control unit and a main station bracket control unit and a main station human-machine interaction interface. Therefore, each single-frame bracket electro-hydraulic control simulation device is connected in parallel with the main station bracket control unit to form a separate simulation electric control system.

[0039] When the simulation device provided in the embodiment of the present application simulates the main actions of the hydraulic support, including but not limited to raising the frame, lowering the frame, pushing the conveyor and moving the frame, the above actions can be completed by simulating the actions of the cylinders with different functions by controlling the extension or retraction of the electric push rod by the electronic control device. In addition, the communication failure can be simulated by manually unplugging the communication cable of the support control unit, and the extension over-limit failure of the push cylinder can be simulated by manual control of the human-machine interface unit, etc., to simulate various possible faults of the hydraulic support and improve the operator's electro-hydraulic control system troubleshooting skills.

[0040] Furthermore, the communication main control unit of the simulation device provided in the embodiment of the present application can upload the operating data of each single-frame bracket to the virtual simulation system in real time, thereby realizing real-time synchronous operation of the simulation device and the virtual device in the virtual reality scene, which is conducive to providing remote virtual training for operators.

[0041] Therefore, the simulation device provided by the present invention can effectively provide comprehensive training on the electro-hydraulic control system of the hydraulic support to operators, and the above-mentioned simulation device is easy to operate, highly safe, and low in cost. It can also reduce labor intensity and improve the working comfort of operators during the training process. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the embodiment of the present application, the following is a brief introduction to the drawings of the embodiment, wherein:

[0043] Figure 1 A schematic diagram of hydraulic support operation control of a simulation device provided in at least one embodiment of the present application;

[0044] Figure 2 A schematic diagram of a digital simulation value of a hydraulic support provided by a simulation device according to at least one embodiment of the present application;

[0045] Figure 3 A schematic diagram of a solenoid valve action indication panel of a simulation device provided by at least one embodiment of the present application;

[0046] Figure 4A schematic diagram of an electrical system of a simulation device provided in at least one embodiment of the present application;

[0047] Figure 5 A housing layout diagram of a simulation device provided for at least one embodiment of the present application; and

[0048] Figure 6 An electronic system block diagram of an analog device provided in at least one embodiment of the present application.

[0049] Wherein, the accompanying drawings are marked as follows:

[0050] 1-human-machine interface unit, 2-bracket control unit, 3-solenoid valve simulation module, 301-balance cylinder extension relay circuit, 302-balance cylinder retraction relay circuit, 4-cylinder simulation module, 4-1-column cylinder simulation module, 4-2-sliding cylinder simulation module, 5-analog-to-digital conversion module, 6-human-machine interface unit operation key, 7-human-machine interface unit display screen, 8-locking emergency stop button, 9-buzzer, 10-1-first electric push rod, 10-2-second electric push rod, 11-1-first sliding rheostat, 11-2-second sliding rheostat, 12-solenoid valve action indication panel, 12-1-solenoid valve action indication panel substrate, 12-2-LED indicator light, 13-remote control computer, 14-network hub, 15-communication main control unit, 16-master station bracket control unit, 17-master station human-machine interaction interface, 18-housing.

[0051] Figure 3 Among them, 12-2-1-Guarding cylinder extension LED indicator, 12-2-2-Guarding cylinder retract LED indicator, 12-2-3-Spray LED indicator, 12-2-4-Side guard plate extension LED indicator, 12-2-5-Side guard plate retract LED indicator, 12-2-6-Balancing cylinder extension LED indicator, 12-2-7-Balancing cylinder retract LED indicator, 12-2-8-Pushing cylinder retract LED indicator, 12-2-9-Pushing cylinder damping retract LED indicator, 12-2-10-Pushing cylinder extension LED indicator, 12-2-11-Bottom cylinder extension LED indicator, 12-2-12-Column cylinder retract LED indicator, 12-2-13-Column cylinder extension LED indicator. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiment of the present application clearer, the technical solution of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present application. It should be pointed out that, in the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other. For example, the division of the unit is only a logical function division, and there may be other division methods in actual implementation. For example, each functional unit can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit, or multiple units can be integrated into another system, or some features can be ignored, or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some communication interfaces, devices or units, which can be electrical, mechanical or other forms.

[0053] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0054] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the usual meanings understood by persons with ordinary skills in the field to which this application belongs. For the sake of clarity and / or simplicity, the description of well-known functions and / or structures is omitted in the following description. The words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "include" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words refer to any direct or indirect communication or connection between two or more elements or objects, regardless of whether those elements or objects are in physical contact with each other, for example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internally connected between two elements or objects. Spatial relationship terms such as "center", "up", "down", "left", "right", "front", "back", "high", "low", "vertical", "horizontal", "inside", "outside", etc. are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. "Transmit", "receive" and "communication" and their derivatives cover direct and indirect communication. The term "or" is inclusive, meaning and / or. The term "controller" refers to any device, system or part thereof that controls at least one operation. Such a controller can be implemented in hardware, or a combination of hardware and software and / or firmware. The functions associated with any particular controller can be centralized or distributed, whether local or remote. The phrase "at least one", when used with a list of items, means that different combinations of one or more of the listed items can be used, and only one item in the list may be required. For example, "at least one of A, B, C" includes any one of the following combinations: A, B, C, A and B, A and C, B and C, A and B and C.

[0055] In the present application, the application combination of modules and the division level of sub-modules are only used for illustration. Without departing from the scope disclosed in the present application, the application combination of modules and the division level of sub-modules can have different methods.

[0056] As mentioned above, the current training period for operators of hydraulic support electro-hydraulic control systems is long and the training effect is limited. Incorrect operation may lead to equipment failure or accidents.

[0057] At least one embodiment of the present application provides a hydraulic support electro-hydraulic control simulation device, which simulation device includes at least one single-frame support electro-hydraulic control simulation device, and the single-frame support electro-hydraulic control simulation device includes a human-computer interaction interface unit, a support control unit, a solenoid valve simulation module, a cylinder simulation module and an analog-to-digital conversion module.

[0058] The simulation device provided by the present invention can provide comprehensive and effective simulation training for operators of the hydraulic support electro-hydraulic control system on the ground, with high safety and low cost.

[0059] The simulation device provided in the embodiments of the present application is described below through several specific examples.

[0060] At least one embodiment of the present application provides a hydraulic support electro-hydraulic control simulation device, such as Figure 1 As shown, it includes a single-frame bracket electro-hydraulic control simulation device, which includes a human-machine interaction interface unit 1, a bracket control unit 2, a solenoid valve simulation module 3, a cylinder simulation module 4 and an analog-to-digital conversion module 5.

[0061] For example, the human-machine interaction interface unit 1 is used by the operator to issue instructions for operating the hydraulic support and receive relevant information of the hydraulic support; the support control unit 2 is configured to receive instructions issued by the human-machine interaction interface unit 1, and realize support action control according to its own control logic; the solenoid valve simulation module 3 is used to simulate the solenoid valve action; the cylinder simulation module 4 is used to simulate the cylinder action and output the corresponding analog quantity; the analog-to-digital conversion module 5 is used to convert the analog quantity into a digital quantity.

[0062] For example, the human-machine interaction interface unit 1 is connected to the bracket control unit 2, one end of the bracket control unit 2 is connected to the solenoid valve simulation module 3, and the other end is connected to the analog-to-digital conversion module 5; the cylinder simulation module 4 is connected to the solenoid valve simulation module 3 and the analog-to-digital conversion module 5 at the same time.

[0063] For example, after receiving the instruction from the human-machine interaction interface unit 1, the bracket control unit 2 sends control information to the solenoid valve simulation module 3. After receiving the control information, the solenoid valve simulation module 3 drives the cylinder simulation module 4 to operate. The analog-to-digital conversion module 5 collects the analog quantity generated by the operation of the cylinder simulation module 4 and converts it into a digital quantity and transmits it to the bracket control unit 2. The human-machine interaction interface unit 1 receives the relevant information of the hydraulic support issued by the bracket control unit 2.

[0064] For example, in some embodiments, Figure 1 As shown, the human-machine interaction interface unit 1 includes an operation key 6 and a display screen 7. The operation key 6 is used to issue an instruction to operate the hydraulic support, and the display screen 7 is used to display the operating data of the hydraulic support.

[0065] For example, in some embodiments, Figure 1 As shown, the human-machine interaction interface unit 1 further includes a locking emergency stop button 8 and a buzzer 9 .

[0066] For example, in some embodiments, the cylinder simulation module 4 is configured to realize the action of the simulated cylinder by controlling the extension or retraction of the electric push rod using an electronic control device.

[0067] For example, in Figure 1 In the embodiment, the cylinder simulation module 4 includes a column cylinder simulation module 4-1 and a push cylinder simulation module 4-2, which are connected in parallel.

[0068] For example, in Figure 1 In the embodiment, the column cylinder simulation module 4-1 is configured to simulate the movement of the support column cylinder and output the corresponding column cylinder pressure simulation quantity, and the push cylinder simulation module 4-2 is configured to simulate the movement of the push cylinder and output the related push cylinder stroke simulation quantity.

[0069] For example, in Figure 2 In the illustrated embodiment, the electric push rod includes a first electric push rod 10-1, the column cylinder simulation module 4-1 includes the first electric push rod 10-1 and a first variable resistor, the movable end of the first electric push rod 10-1 is connected to the movable end of the first variable resistor, when the first electric push rod 10-1 moves, the resistance value of the first variable resistor changes accordingly, and the analog-to-digital conversion module 5 converts the resistance value of the first variable resistor into a digital value in real time and transmits it to the bracket control unit 2.

[0070] For example, in Figure 2 In the embodiment shown, the first rheostat is a first sliding rheostat 11-1. The movable end of the first electric push rod 10-1 is connected to the sliding end of the first sliding rheostat 11-1 by bolts.

[0071] For example, in some embodiments, the first rheostat may be a first rotary variable rheostat, and the movable end of the first electric push rod 10 - 1 is connected to the movable end of the first rotary variable rheostat via a rack.

[0072] For example, in Figure 2 In the illustrated embodiment, the electric push rod includes a second electric push rod 10-2, the push cylinder simulation module 4-2 includes the second electric push rod 10-2 and a second variable resistor, the movable end of the second electric push rod 10-2 is connected to the movable end of the second variable resistor, when the second electric push rod 10-2 moves, the resistance value of the second variable resistor changes accordingly, and the analog-to-digital conversion module 5 converts the resistance value of the second variable resistor into a digital value in real time and transmits it to the bracket control unit 2.

[0073] For example, in Figure 2In the embodiment of the present invention, the second rheostat is a second sliding rheostat 11-2. The movable end of the second electric push rod 10-2 is connected to the sliding end of the second sliding rheostat 11-2 by bolts.

[0074] For example, in some embodiments, the second rheostat may be a second rotary variable rheostat, and the movable end of the second electric push rod 10 - 2 is connected to the movable end of the second rotary variable rheostat via a rack.

[0075] For example, Figure 1 As shown, the solenoid valve action indication panel 12 connected to the solenoid valve simulation module 3 includes a substrate 12-1 and an indicator light 12-2 arranged thereon. After receiving the control information, the solenoid valve simulation module 3 drives the indicator light 12-2 to light up. The lighting and extinguishing of the indicator light 12-2 respectively indicate the state of the corresponding solenoid valve action. When the indicator light 12-2 is lit, it indicates that the solenoid valve is open; when it is extinguished, it indicates that the solenoid valve is closed.

[0076] For example, in Figure 2 In the embodiment shown, the simulated cylinders include a side guard cylinder, a balancing cylinder, a bottoming cylinder, a front beam cylinder, a telescopic beam cylinder, a side guard plate cylinder, or any combination thereof. Figure 2-3 In the embodiment shown, the output nodes of the relay circuits 301 and 302 of the solenoid valve simulation module 3 control the LED indicator light of the balancing oil cylinder. When the bracket control unit 2 receives the instruction of the balancing oil cylinder extension, the digital output port of the bracket control unit 2 controls the coil of the relay circuit 301 to be energized, the output node of the relay circuit 301 is closed, and the LED indicator light 12-2-6 of the balancing oil cylinder extension is energized and illuminated. When the bracket control unit 2 receives the instruction of the balancing oil cylinder retracting, the digital output port of the bracket control unit 2 controls the coil of the relay circuit 302 to be energized, the output node of the relay circuit 302 is closed, and the LED indicator light 12-2-7 of the balancing oil cylinder retracting is energized and illuminated.

[0077] For example, in some embodiments, the colors of the indicator light 12-2 include red, green and white, which are used to display the operating status of each solenoid valve in real time, with red indicating extension, green indicating retraction, and white indicating spraying. The indicator light 12-2 may be an LED light.

[0078] For example, in Figure 3In the embodiment shown, the indicator lights 12-2 in the simulation device include an LED indicator light 12-2-1 for extending the side guard cylinder, an LED indicator light 12-2-2 for retracting the side guard cylinder, a spray LED indicator light 12-2-3, an LED indicator light 12-2-4 for extending the side guard plate, an LED indicator light 12-2-5 for retracting the side guard plate, an LED indicator light 12-2-6 for extending the balancing cylinder, an LED indicator light 12-2-7 for retracting the balancing cylinder, an LED indicator light 12-2-8 for retracting the pushing cylinder, an LED indicator light 12-2-9 for retracting the damping of the pushing cylinder, an LED indicator light 12-2-10 for extending the pushing cylinder, an LED indicator light 12-2-11 for extending the bottom cylinder, an LED indicator light 12-2-12 for retracting the column cylinder, and an LED indicator light 12-2-13 for extending the column cylinder.

[0079] For example, in some embodiments, Figure 4 As shown, the simulation device includes at least two single-frame bracket electro-hydraulic control simulation devices.

[0080] For example, in Figure 4 In the embodiment, it also includes a remote control computer 13, a network hub 14, a communication main control unit 15 and a main station bracket control unit 16; the remote control computer 13 obtains the operating data of each bracket control unit 2 by accessing the WEB service port, and displays the status information and setting parameters of the electro-hydraulic control of each single bracket; the communication main control unit 15 is used to organize the operating data of each single bracket into an internal database, and provide WEB data services through Ethernet; the main station bracket control unit 16 is used to manage the bracket control unit 2, read the operating data of the bracket control unit 2 and upload it to the communication main control unit 15, receive the parameter setting instructions of the remote control computer 13 and transmit them to the corresponding bracket control unit 2.

[0081] For example, the remote control computer 13 is connected to the communication main control unit 15 through the network hub 14; the communication main control unit 15 is connected to the main station bracket control unit 16; the bracket control unit 2 is connected to the main station bracket control unit 16, and is connected to other bracket control units 2 in parallel.

[0082] For example, in some embodiments, Figure 4 As shown, the simulation device also includes a master station human-machine interaction interface 17 connected to the master station bracket control unit 16 .

[0083] For example, in some embodiments, Figure 5 As shown, the simulation device further comprises a housing 18, the outer wall of which is provided with a remote control computer 13 display screen, a main station human-machine interface 17, a human-machine interface unit 1 and a solenoid valve action indication panel 12. The housing 18 is square and at least partially has a metal base.

[0084] For example, in some embodiments, the bottom end of the shell 18 may also be provided with a roller and a clip for fixing the roller. In addition, the bottom end of the shell 18 may also be provided with a support.

[0085] For example, in some embodiments, the outer wall of the housing 18 of the simulation device is provided with at least two human-machine interaction interface units 1 and corresponding at least two solenoid valve action indication panels 12. Figure 5 As shown, 20 human-machine interaction interface units 1 and corresponding 20 solenoid valve action indication panels 12 are arranged on the front of the shell 18, which are arranged in 4 rows and 5 columns. The corresponding solenoid valve action indication panel 12 is arranged above each human-machine interaction interface unit 1, and the display screen of the remote control computer 13 and the main station human-machine interaction interface 17 located below it are arranged on the upper right part of the front of the shell 18.

[0086] For example, in some embodiments, Figure 6 As shown, the hardware layer of the remote control computer 13 includes an X86 industrial computer 1301 for running software and an operating system; a touch screen display screen 1302 for displaying a human-machine interaction interface unit; and a solid-state hard disk 1303 for storing data. The software layer of the remote control computer 13 includes an operating system 1330 for establishing a software API interface on the hardware layer; a bracket automation application 1331 for bracket automation control and monitoring; and a WEB server 1332 for transmission of automation data Ethernet end.

[0087] like Figure 6 In the embodiment shown, the hardware layer of the communication main control unit 15 includes an ARM embedded computer 1504 for providing an industrial field computing platform; an industrial field bus controller 1505 for controlling various industrial communication interfaces; and a solid state drive 1503 for storing data. The software layer of the communication main control unit 15 includes an embedded operating system 1533, which is responsible for software and hardware API layer control, communication interface control, calculation and hardware management; a protocol conversion program 1534 for compatibility with various communication protocols; and a WEB server 1535 for Ethernet data exchange between the X86 platform and the ARM platform.

[0088] like Figure 6In the embodiment shown, the support control unit 2 controls the hydraulic system of a single support by controlling the support solenoid valve. The hardware layer of the support control unit 2 includes an ARM embedded single chip microcomputer 217; it also includes an industrial field bus controller 218, which is used to form a hardware layer for communicating with the host computer; it also includes a FLASH memory 219; in addition, it also includes a digital output port 220, which is used to drive the support solenoid valve to move; it also includes an analog acquisition port 221, which is used to collect analog data to determine the support cylinder pressure, extension amount and support posture. The software layer of the support control unit 2 includes an embedded operating system 243, which is responsible for the hardware layer software interface; it also includes a support control program 244, which is used for the programmed action of the support solenoid valve and the support posture and status monitoring; it also includes a communication program 245, which is responsible for communicating with the host computer and the support human-machine interaction interface unit 1.

[0089] like Figure 6 In the embodiment shown, the human-machine interface unit 1 is responsible for displaying the support operation information, alarm, control and parameter setting. The hardware layer of the support human-machine interface unit 1 includes an ARM embedded single-chip microcomputer 111, an industrial field bus controller 112, and a FLASH memory 113; it also includes a dot matrix liquid crystal display screen 114 for displaying the support operation information and parameters; in addition, the hardware layer of the human-machine interface unit 1 also includes a button 115 for support operation and parameter setting; it can also include a buzzer 116 for alarm. The software layer of the human-machine interface unit 1 includes an embedded operating system 139, a support control program 140, a support status display program 141 and a communication program 142.

[0090] like Figure 6 In the embodiment shown, the hardware layer of the analog-to-digital conversion module 5 includes a 16-bit single-chip microcomputer 506; a 12-bit AD sampling module 507 for converting analog measurement values ​​into digital data; and a DC / DC-1508 for obtaining a working power supply. The software layer of the analog-to-digital conversion module 5 includes a digital sampling program 536 for analog quantity acquisition; a digital-to-analog conversion program 537 for mutual conversion between digital quantities and analog quantities; and a communication program 538 for data exchange with a host computer.

[0091] like Figure 6 In the embodiment shown, the cylinder simulation module 4 is used to simulate the cylinder action and feed back the corresponding cylinder simulation measurement value to determine the working state of the hydraulic cylinder. The cylinder simulation module 4 includes an electric push rod 409, which is used to simulate the extension and retraction of the cylinder and push the sliding end of the sliding rheostat 410 to change its output resistance to simulate the cylinder simulation output. The cylinder simulation module 4 also includes a DC / DC-2408 for providing working power.

[0092] like Figure 6In the embodiment shown, the solenoid valve simulation module 3 is used to simulate the action of the solenoid valve, and its relay coil is connected to the digital output port 220 of the bracket control unit 2 through a cable 650 to receive the digital output of the bracket control unit 2, actuate the corresponding relay, and its relay node output circuit 322 drives the electric push rod 409 of the oil cylinder simulation module 4, and the LED indicator 1226 corresponding to the solenoid valve action indication panel 12 indicates the action of the solenoid valve. The solenoid valve action indication panel 12 indicates the action of the corresponding solenoid valve by turning off and on the LED indicator 1226 on the panel, the LED protection circuit 1227 is used to protect the LED indicator 1226 from burning, the LED connection cable 1228 is used to power the LED indicator 1226, and the plastic screen-printed substrate 1229 indicates the corresponding oil cylinder indicated by the LED indicator 1226 through the screen-printed bracket oil cylinder. Through the above system, the bracket automation action simulation such as bracket adjacent rack operation, group operation, free operation, follow-up operation, and terminal automation can be realized, and the ground bracket automation simulation training can be completed. The analog feedback components of the above system can simulate various fault conditions such as rack failure and working surface pressure failure, which is convenient for operators to conduct troubleshooting training. At the same time, the fieldbus communication method consistent with the site can provide system communication architecture training and communication fault troubleshooting training.

[0093] For example, in some embodiments, the simulation device also includes a virtual simulation system connected to the communication main control unit 15; the communication main control unit 15 uploads the operation data of each single-rack bracket to the virtual simulation system in real time, thereby realizing real-time synchronous operation of the simulation device and the virtual device in the virtual reality scene.

[0094] When operators of hydraulic support electro-hydraulic control systems are trained, various hydraulic support electro-hydraulic control system function-related operations can be simulated, including but not limited to:

[0095] 1. Single action control of a single bracket (neighboring bracket or current bracket)

[0096] The operator can simulate on any bracket, select the left adjacent bracket or the right adjacent bracket (or the current bracket) as the controlled bracket, and issue corresponding control commands through the bracket control unit 2 to implement the corresponding actions of the controlled bracket, including but not limited to lifting, lowering, moving, pushing and sliding, retractable side guard plates, retractable side guard plates, etc.

[0097] 1.1 Lifting process: In some embodiments, Figure 1-4As shown, a single-frame bracket electro-hydraulic control system includes a human-machine interface unit 1, a bracket control unit 2, a solenoid valve simulation module 3, a column cylinder simulation module 4-1, a push cylinder simulation module 4-2, an analog-to-digital conversion module 5 and a solenoid valve action indication panel 12. When the single-frame support electro-hydraulic control system receives the "raise column cylinder" instruction issued by the adjacent support control unit 2, the "raise column" terminal of the electromagnetic valve control port of the support control unit 2 outputs a high level, and controls the electromagnetic valve simulation module 3 to output two high-level signals through the control cable, one of which controls the corresponding LED indicator 12-2-13 on the electromagnetic valve action indicator board 12 to light up, indicating that the column-raising electromagnetic valve is actuated; the other controls the first electric push rod 10-1 of the column cylinder simulation module 4-1 to actuate, and the movable end of the first electric push rod 10-1 is connected to the sliding end of the first sliding rheostat 11-1 by bolts. When the first electric push rod 10-1 moves, the resistance value of the first sliding rheostat 11-1 will change, and the analog-to-digital conversion module 5 will convert the resistance value of the first sliding rheostat 11-1 into a digital value in real time and transmit it to the support control unit 2, and the support control unit 2 will then transmit the value to the human-machine interface unit 1. By pressing the human-machine interface unit operation key 6 to turn the page to the column cylinder pressure display interface, the human-machine interface unit display screen 7 will display the current column cylinder pressure. Through this device, it is possible to simulate the operation of the solenoid valve of the controlled bracket by the adjacent bracket, and to observe the solenoid valve state and analog quantity change of the controlled bracket in real time.

[0098] 1.2 Descending process: In some embodiments, as Figure 1-4 As shown, when the single-frame bracket electro-hydraulic control system receives the "lower column cylinder" instruction issued by the adjacent bracket control unit 2, the "lower column" terminal of the solenoid valve control port of the bracket control unit 2 outputs a high level, and controls the solenoid valve simulation module 3 to output two high-level signals through the control cable, one of which controls the corresponding LED indicator 12-2-12 on the solenoid valve action indication panel 12 to light up, indicating that the column lowering solenoid valve is actuated; the other controls the first electric push rod 10-1 of the column cylinder simulation module 4-1 to actuate, and the movable end of the first electric push rod 10-1 is connected to the sliding end of the first sliding rheostat 11-1 by bolts. After the first electric push rod 10-1 is actuated, the resistance value of the first sliding rheostat 11-1 will change, and the analog-to-digital conversion module 5 will convert the resistance value of the first sliding rheostat 11-1 into a digital quantity in real time and transmit it to the bracket control unit 2.

[0099] 1.3 The process of breaking up

[0100] In some embodiments, Figure 1-4As shown, when the single-rack support electro-hydraulic control system receives the "pull the rack" instruction issued by the adjacent support control unit 2, the "pull the rack" terminal of the solenoid valve control port of the support control unit 2 outputs a high level, and controls the solenoid valve simulation module 3 to output two high-level signals through the control cable, one of which controls the corresponding LED indicator 12-2 on the solenoid valve action indication panel 12 to light up, indicating that the pull-rack solenoid valve is actuated, and the other controls the second electric push rod 10-2 of the push cylinder simulation module 4-2 to actuate, and the movable end of the second electric push rod 10-2 is connected to the sliding end of the second sliding rheostat 11-2 by bolts. When the second electric push rod 10-2 moves, the resistance value of the second sliding rheostat 11-2 will change, and the analog-to-digital conversion module 5 will convert the resistance value of the second sliding rheostat 11-2 into a digital quantity in real time and transmit it to the support control unit 2.

[0101] 1.4 Pushing process

[0102] In some embodiments, Figure 1-4 As shown, when the single-rack support electro-hydraulic control system receives the "push and slide" instruction issued by the adjacent support control unit 2, the "push and slide" terminal of the solenoid valve control port of the support control unit 2 outputs a high level, and controls the solenoid valve simulation module 3 to output two high-level signals through the control cable, one of which controls the corresponding LED indicator 12-2 on the solenoid valve action indication panel 12 to light up, indicating that the rack pulling solenoid valve is actuated, and the other controls the second electric push rod 10-2 of the push cylinder simulation module 4-2 to actuate, and the movable end of the second electric push rod 10-2 is connected to the sliding end of the second sliding rheostat 11-2 by bolts. When the second electric push rod 10-2 moves, the resistance value of the second sliding rheostat 11-2 will change, and the analog-to-digital conversion module 5 will convert the resistance value of the second sliding rheostat 11-2 into a digital quantity in real time and transmit it to the support control unit 2.

[0103] 2. Group automatic control

[0104] In some embodiments, Figure 4 As shown, 1 to 5 adjacent brackets are set as a group. After a "group movement" instruction such as "group push and slide" is issued through the human-machine interaction interface unit 1, these adjacent brackets will perform a "push and slide" action at the same time.

[0105] 3. Remote control

[0106] In some embodiments, Figures 1 to 4As shown, the main station bracket control unit 16 forms an industrial field control bus with each bracket control unit 2 through a communication cable. The main station bracket control unit 16 reads the operation data of each bracket control unit 2 through the industrial field control bus, and transmits the data to the communication main control unit 15 through the communication cable. At the same time, the communication main control unit 15 forms a local area network through the network hub 14 and the remote control computer 13. The communication main control unit 15 organizes the data sent by the main station bracket control unit 16 and publishes it on the WEB server through internal software. The remote control computer 13 obtains the operation data of each bracket control unit 2 by accessing the WEB service port, and displays it on the screen through software. Through this network structure, the remote control computer 13 can also realize the modification of the internal parameters of the bracket control unit 2. Using this system, training such as bracket operation data query, parameter query, and parameter setting can be completed, and after modifying the parameters, the changes in the action logic of each bracket control unit 2 can be observed in real time.

[0107] Various actions of the simulated hydraulic support can be realized according to the instructions of the remote control computer 13, and the state of the corresponding solenoid valve action can be displayed through the solenoid valve action indication panel 12. Figures 1 to 4 As shown, when the support control unit 2 receives the command to raise the column cylinder from the remote control computer 13 through the communication network, the support control unit 2 transmits the information to the human-machine interface unit 1 through communication, and the human-machine interface unit 1 displays the action command on its human-machine interface display screen 7. At the same time, the support control unit 2 sends an enable signal to the solenoid valve simulation module 3 through a cable. After receiving the enable signal, the solenoid valve simulation module 3 drives, and one of the digital outputs drives the first electric push rod 10-1 of the column cylinder simulation module 4-1 to make it move. The first electric push rod 10-1 pushes the first sliding rheostat 11-1, and the analog-to-digital conversion module 5 samples the change in the resistance value of the first sliding rheostat 11-1 and converts the resistance change value into a digital signal and transmits it to the support control unit 2. At the same time, another digital output of the solenoid valve simulation module 3 drives the column cylinder extension LED indicator 12-2-13 on the solenoid valve action indication panel 12 through a cable to light up, so as to indicate the action of the column cylinder solenoid valve. The above process completes the functions of receiving instructions, actuating the corresponding solenoid valve according to the instructions, and displaying the measurement action information.

[0108] 4. Fault simulation

[0109] In some embodiments, Figures 1 to 4As shown, the communication cable of a bracket control unit 2 can be manually unplugged to simulate the state of bracket communication failure. At this time, the main station bracket control unit 16 will detect the breakpoint position caused by the communication failure, and transmit the breakpoint position to the human-machine interaction interface unit 1 before the breakpoint by communication. The human-machine interaction interface unit 1 will display the fault position on the display screen 7 and start the buzzer 9 to alarm. The operator can find the communication breakpoint according to the alarm information and eliminate the fault.

[0110] In some embodiments, Figures 1 to 4 As shown, the push cylinder simulation module 4-2 can also be manually controlled to extend through the human-machine interface unit 1 so that its action value is greater than the set value to simulate the over-limit failure of the push cylinder extension. When the support control unit 2 detects that the action value of the push cylinder exceeds the limit, an alarm will be generated and the alarm information will be transmitted to the corresponding human-machine interface unit 1. The human-machine interface unit 1 will display that the push cylinder action exceeds the limit and start the buzzer 9 to alarm. The operator can re-control the push cylinder to retract to the set value according to the alarm, thereby eliminating the fault.

[0111] In some embodiments, Figures 1 to 4 As shown, a cable connection of the solenoid valve simulation module 3 can also be manually disconnected to simulate a solenoid valve failure. The operator can determine which solenoid valve has failed based on whether the LED indicator 12-2 on the solenoid valve action indication panel 12 can be lit, and then check the cable connection of the solenoid valve simulation module 3 to complete the troubleshooting.

[0112] 5. Troubleshooting

[0113] In some embodiments, Figure 1-4As shown, on the support monitoring software of the remote control computer 13, the corresponding support automatic control program such as the action time, action sequence, action triggering conditions of the support lowering, pulling and lifting actions (hereinafter referred to as the support lowering, pulling and lifting actions) is set, and then the automatic control program is sent to the communication main control unit 15 through Ethernet, and the communication main control unit 15 sends the automatic control program to the corresponding support control unit 2 through the field control bus. The support control unit 2 stores the automatic control program in the internal ROM. When the trigger condition is reached, for example, when the remote control computer 13 issues a support lowering and pulling and lifting instruction, the support control unit 2 will execute the instruction, drive the relay line package corresponding to the solenoid valve simulation module 3 through its internal digital output module, and the corresponding relay output of the solenoid valve simulation module 3 will act, drive the corresponding electric push rod to act and the corresponding LED indicator 12-2 to be energized. When the electric push rod acts, it will push the sliding contact of the sliding rheostat connected to it to change its output resistance. The analog-to-digital conversion module 5 will transmit the collected resistance value to the support control unit 2 in real time through the cable. The support control unit 2 determines whether the action is normal according to the analog change value. If the digital output port outputs but the analog quantity does not change, the bracket control unit 2 considers that the action is abnormal and will upload the fault information to the remote control computer 13 and the human-machine interface unit 1. The remote control computer 13 and the human-machine interface unit 1 will display the corresponding alarm information and start the buzzer 9 inside the human-machine interface unit 1 to alarm. Through the above process, the automatic control program can be compiled, downloaded, executed and fed back. If the action is abnormal, the remote control computer 13 and the human-machine interface unit 1 will alarm and display the corresponding information.

[0114] 6. Remote simulation

[0115] When a remote desktop computer or a mobile terminal accesses the communication main control unit 15 via Ethernet, the communication main control unit 15 transmits the status query program of the support to the remote desktop computer via the WEB service, and the remote desktop computer displays the status of the support in its browser and can set the support operation parameters. In addition, the remote desktop computer can send the calculated working status data of the hydraulic support in the virtual scene to the graphics processor, and the graphics processor presents the simulated on-site real scene and the working status of the hydraulic support based on this data, which is conducive to the operator to easily obtain vivid and intuitive perceptual knowledge and enhance the understanding of the training content.

[0116] In summary, the embodiment of the present application provides a hydraulic support electro-hydraulic control simulation device, including at least one single-frame support electro-hydraulic control simulation device, the single-frame support electro-hydraulic control simulation device includes a human-machine interface unit, a support control unit, a solenoid valve simulation module, a cylinder simulation module and an analog-to-digital conversion module, the cylinder simulation module is configured to use the electronic control device to control the extension or retraction of the electric push rod to achieve the action of the simulated cylinder, the above-mentioned simulation device may also include a solenoid valve action indication panel to indicate the state of the corresponding solenoid valve action, and may also include a remote control computer, a network hub, a communication main control unit, a master station support control unit, a master station human-machine interface, a virtual simulation system, etc. For the hydraulic support electro-hydraulic control system, the above-mentioned simulation device can be used to provide comprehensive and effective simulation training for operators.

[0117] The embodiments described above and shown in the accompanying drawings are merely exemplary and are not intended to limit the present application. A person skilled in the art may make various improvements, equivalent substitutions or modifications to the present application without departing from the principles of the present application, and such improvements, equivalent substitutions or modifications shall also fall within the scope of protection of the present application.

Claims

1. A hydraulic support electro-hydraulic control simulation device, characterized in that: It comprises at least one single-frame bracket electro-hydraulic control simulation device, and the single-frame bracket electro-hydraulic control simulation device comprises a human-machine interaction interface unit, a bracket control unit, a solenoid valve simulation module, a cylinder simulation module and an analog-to-digital conversion module; The human-machine interaction interface unit is used for the operator to issue instructions for operating the hydraulic support and receive relevant information of the hydraulic support; The support control unit is configured to receive instructions from the human-machine interaction interface unit and implement support action control according to its own control logic; The solenoid valve simulation module is used to simulate the action of the solenoid valve; The oil cylinder simulation module is used to simulate the oil cylinder action and output the corresponding simulation quantity; The analog-to-digital conversion module is used to convert the corresponding analog quantity into a digital quantity; The human-machine interaction interface unit is connected to the bracket control unit, one end of the bracket control unit is connected to the solenoid valve simulation module, and the other end is connected to the analog-to-digital conversion module; the cylinder simulation module is connected to the solenoid valve simulation module and the analog-to-digital conversion module at the same time; After receiving the instruction from the human-machine interaction interface unit, the support control unit sends control information to the solenoid valve simulation module. After receiving the control information, the solenoid valve simulation module drives the cylinder simulation module to operate. The analog-to-digital conversion module collects the analog quantity generated by the action of the cylinder simulation module and converts it into a digital quantity and transmits it to the support control unit. The human-machine interaction interface unit receives the relevant information of the hydraulic support issued by the support control unit.

2. The simulation device according to claim 1, characterized in that The human-machine interaction interface unit includes an operation key and a display screen, wherein the operation key is used to issue an instruction for operating the hydraulic support, and the display screen is used to display the operating data of the hydraulic support.

3. The simulation device according to claim 2, characterized in that The human-machine interaction interface unit also includes a locking emergency stop button and a buzzer.

4. The simulation device according to claim 1, characterized in that The cylinder simulation module is configured to realize the action of the simulated cylinder by controlling the extension or retraction of the electric push rod by an electronic control device.

5. The simulation device according to claim 4, characterized in that The cylinder simulation module comprises a column cylinder simulation module and a push cylinder simulation module, which are connected in parallel.

6. The simulation device according to claim 5, characterized in that The column cylinder simulation module is configured to simulate the column cylinder action and output the corresponding column cylinder pressure simulation quantity; the push cylinder simulation module is configured to simulate the push cylinder action and output the related push cylinder stroke simulation quantity.

7. The simulation device according to claim 6, characterized in that The electric push rod includes a first electric push rod, and the column cylinder simulation module includes the first electric push rod and a first variable resistor. The movable end of the first electric push rod is connected to the movable end of the first variable resistor. When the first electric push rod moves, the resistance value of the first variable resistor changes accordingly. The analog-to-digital conversion module converts the resistance value of the first variable resistor into a digital value in real time and transmits it to the bracket control unit.

8. The simulation device according to claim 7, characterized in that: The first rheostat is a first sliding rheostat.

9. The simulation device according to claim 8, characterized in that The movable end of the first electric push rod is connected to the sliding end of the first sliding resistor by bolts.

10. The simulation device according to claim 7, characterized in that: The first resistor is a first rotary variable resistor.

11. The simulation device according to claim 10, characterized in that: The movable end of the first electric push rod is connected to the movable end of the first rotary variable resistor through a rack.

12. The simulation device according to claim 6, characterized in that The electric push rod includes a second electric push rod, and the push cylinder simulation module includes the second electric push rod and a second variable resistor. The movable end of the second electric push rod is connected to the movable end of the second variable resistor. When the second electric push rod moves, the resistance value of the second variable resistor changes accordingly. The analog-to-digital conversion module converts the resistance value of the second variable resistor into a digital value in real time and transmits it to the bracket control unit.

13. The simulation device according to claim 12, characterized in that: The second rheostat is a second sliding rheostat.

14. The simulation device according to claim 13, characterized in that The movable end of the second electric push rod is connected to the sliding end of the second sliding rheostat via bolts.

15. The simulation device according to claim 12, characterized in that: The second resistor is a second rotary variable resistor.

16. The simulation device according to claim 15, characterized in that The movable end of the second electric push rod is connected to the movable end of the second rotary variable resistor through a rack.

17. The simulation device according to claim 1, characterized in that It also includes a solenoid valve action indication panel connected to the solenoid valve simulation module, which includes a substrate and an indicator light arranged thereon. After receiving control information, the solenoid valve simulation module drives the indicator light to light up. The lighting and extinguishing of the indicator light respectively indicate the state of the corresponding solenoid valve action. When the indicator light is on, it indicates that the solenoid valve is open; when it is off, it indicates that the solenoid valve is closed.

18. The simulation device according to claim 17, characterized in that The colors of the indicator light include red, green and white, which are used to display the action status of each solenoid valve in real time, red indicates extension, green indicates retraction, and white indicates spraying.

19. The simulation device according to claim 17, characterized in that The indicator light is an LED light.

20. The simulation device according to claim 19, characterized in that The indicator lights include an LED indicator light for extending the side guard cylinder, an LED indicator light for retracting the side guard cylinder, a spray LED indicator light, an LED indicator light for extending the side guard plate, an LED indicator light for retracting the side guard plate, an LED indicator light for extending the balancing cylinder, an LED indicator light for retracting the balancing cylinder, an LED indicator light for retracting the pushing cylinder, an LED indicator light for retracting the pushing cylinder damping, an LED indicator light for extending the pushing cylinder, an LED indicator light for extending the bottom cylinder, an LED indicator light for retracting the column cylinder, an LED indicator light for extending the column cylinder or any combination thereof.

21. The simulation device according to any one of claims 1 to 20, characterized in that: It comprises at least two of the single-frame support electro-hydraulic control simulation devices.

22. The simulation device according to claim 21, characterized in that It also includes a remote control computer, a network hub, a communication main control unit and a master station bracket control unit; The remote control computer obtains the operation data of each support control unit by accessing the WEB service port, and displays the status information and setting parameters of the electro-hydraulic control of each single support; The communication main control unit is used to organize the operation data of each single rack into an internal database and provide WEB data services via Ethernet; The main station bracket control unit is used to manage the bracket control unit, read the bracket control unit operation data and upload it to the communication main control unit, receive the remote control computer parameter setting instructions and transmit them to the corresponding bracket control unit; The remote control computer is connected to the communication main control unit through the network hub; the communication main control unit is connected to the main station bracket control unit; the bracket control unit is connected to the main station bracket control unit and is connected to other bracket control units in parallel.

23. The simulation device according to claim 22, characterized in that It also includes a master station human-machine interaction interface connected to the master station bracket control unit.

24. The simulation device according to claim 23, characterized in that It also includes a shell, the outer wall of which is provided with the remote control computer display screen, the main station human-computer interaction interface, the human-computer interaction interface unit and the solenoid valve action indication panel.

25. The simulation device according to claim 24, characterized in that The housing at least partially has a metallic base body.

26. The simulation device according to claim 24, characterized in that The housing is square.

27. The simulation device according to claim 24, characterized in that The bottom end of the shell is also provided with a roller and a clip for fixing the roller.

28. The simulation device according to claim 24, characterized in that The bottom end of the shell is also provided with a support.

29. The simulation device according to claim 24, characterized in that The outer wall of the shell is provided with at least two of the human-machine interaction interface units and corresponding at least two of the solenoid valve action indication panels.

30. The simulation device according to claim 29, characterized in that The front of the shell is provided with 20 human-machine interaction interface units and corresponding 20 solenoid valve action indication panels, which are arranged in 4 rows and 5 columns. The corresponding solenoid valve action indication panel is arranged above each human-machine interaction interface unit, and the display screen of the remote control computer and the main station human-machine interaction interface located below it are arranged on the upper right part of the front of the shell.

31. The simulation device according to claim 22, characterized in that It also includes a virtual simulation system connected to the communication main control unit; the communication main control unit uploads the operation data of each single rack to the virtual simulation system in real time, realizing the real-time synchronous operation of the simulation device and the virtual device in the virtual reality scene.

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