A shearer simulation model

Abstract

The present application relates to a kind of coal winning machine simulation model, the model includes intermediate control box, intermediate control box includes electric control box and two traction parts, the two ends of each traction part are respectively fixedly connected with the connecting end of electric control box and a rocker arm, the free end of rocker arm is fixedly connected with a roller, in turn drive roller to rotate by electric control box, and drive rocker arm to lift by electric control box using hydraulic mode.In addition, the bottom of traction part is provided with walking device, and the walking device drives the traction part to drive the model to walk.In turn, the model has the roller, rocker arm, traction part and internal waterway and oil way of real coal winning machine, can realize the conventional and automation function of real coal winning machine, to significantly improve the intuitiveness and authenticity of teaching.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical and mechanical design of coal mining machine, and is applied to the coal industry, in particular to a coal mining machine simulation model. BACKGROUND

[0002] At present, the existing coal mining machine model does not have the drum, rocker arm, traction part and internal waterway and oilway of the real coal mining machine, so the existing coal mining machine model does not have the various conventional and automatic functions of the real coal mining machine, and the teaching intuitiveness and authenticity are poor, and students cannot accurately understand the working principle of the coal mining machine through the coal mining machine model.

[0003] Therefore, there is an urgent need for a coal mining machine simulation model that can improve the teaching intuitiveness and authenticity. SUMMARY

[0004] The present application aims to provide a coal mining machine simulation model, which has the drum, rocker arm, traction part and internal waterway and oilway of the real coal mining machine, can realize the various conventional and automatic functions of the real coal mining machine, and improve the teaching intuitiveness and authenticity.

[0005] To achieve the above-mentioned purpose, the present application provides the following solutions:

[0006] A coal mining machine simulation model, the model comprising an intermediate control box;

[0007] The intermediate control box comprises an electric control box and two traction parts, the two traction parts are respectively located at the two ends of the intermediate control box, the electric control box is located between the two traction parts, the two ends of each traction part are connected with the electric control box and the connecting end of a rocker arm respectively, and the free end of the rocker arm is connected with a drum;

[0008] The electric control box is used to drive the drum to rotate and drive the rocker arm to lift through hydraulic mode;

[0009] The bottom of the traction part is provided with a walking device, and the walking device is used to drive the model to walk by driving the traction part.

[0010] According to the specific embodiments of the present application, the following technical effects are disclosed:

[0011] The coal mining machine simulation model comprises an intermediate control box, the intermediate control box comprises an electric control box and two traction parts, the two traction parts are respectively located at two ends of the intermediate control box, and the electric control box is located between the two traction parts. The two ends of each traction part are fixedly connected with the electric control box and a connecting end of a rocker arm respectively, a free end of the rocker arm is fixedly connected with a drum, the drum is driven to rotate through the electric control box, and the rocker arm is driven to lift through the electric control box by using a hydraulic mode, the model has the drum, the rocker arm, internal water and oil circuits of the real coal mining machine, and can realize the drum cutting function and the rocker arm lifting function of the real coal mining machine. In addition, a walking device is arranged at the bottom of the traction part, the walking device drives the traction part to drive the model to walk, the model has the traction part of the real coal mining machine, and can realize the left and right traction walking function of the real coal mining machine, and then the model has the drum, the rocker arm, the traction part and the internal water and oil circuits of the real coal mining machine, and can realize all kinds of conventional and automatic functions of the real coal mining machine, thereby significantly improving the intuitiveness and authenticity of teaching. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0013] Figure 1 A front view of the coal mining machine simulation model provided in embodiment 1 of the present application.

[0014] Figure 2 A top view of the coal mining machine simulation model provided in embodiment 1 of the present application.

[0015] Figure 3 A structure schematic view of the scraper provided in embodiment 1 of the present application.

[0016] Figure 4 A pilot power-on circuit provided in embodiment 1 of the present application.

[0017] Figure 5 A circuit diagram of the brake system simulation provided in embodiment 1 of the present application.

[0018] Figure 6 A circuit diagram of the machine head and tail limiting simulation provided in embodiment 1 of the present application.

[0019] Symbol explanation:

[0020] 1-Intermediate control box; 2-Rocker arm; 3-Drum; 4-Traveling device; 5-Cutting motor clutch device; 6-Drum motor; 7-Support leg; 8-Support slipper; 9-Hard plastic roller; 11-Electrical control box; 12-Traction unit; 13-Pump motor; 14-Oil tank; 15-Hydraulic cylinder; 16-Traction motor; 17-Inverter box. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide a coal mining machine simulation model. This simulation model has the drum, rocker arm, traction unit, and internal water and oil circuits of a real coal mining machine, and can realize the various conventional and automated functions of a real coal mining machine, thereby improving the intuitiveness and realism of teaching.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1:

[0025] This embodiment provides a simulation model of a coal mining machine, based on the real MG300 / 700-WD coal mining machine, such as... Figure 1 and Figure 2 As shown, the simulation model includes an intermediate control box 1. The intermediate control box 1 includes an electrical control box 11 and two traction units 12, located at opposite ends of the intermediate control box 1, with the electrical control box 11 positioned between the two traction units 12. Each traction unit 12 has its two ends connected to the electrical control box 11 and a rocker arm 2, respectively. The free end of the rocker arm 2 is connected to a roller 3. Specifically, the rocker arm 2 and the traction unit 12 are hinged with cylindrical pins; the rocker arm 2 has a single hinge, while the traction unit 12 has two hinges. The rocker arm 2 and the roller 3 are positioned using a square joint and fixed with high-strength bolts.

[0026] The electrical control box 11 is used to drive the roller 3 to rotate and to drive the rocker arm 2 to lift and lower via hydraulic means.

[0027] Specifically, the rocker arm 2 is provided with a cutting motor clutch device 5, and the cutting motor clutch device 5 is in communication connection with the electric control box 11. The drum 3 is provided with a drum motor 6, and the motor shaft of the drum motor 6 is fixedly connected with the rotating shaft of the drum 3. The electric control box 11 is used for controlling the drum motor 6 to work according to the working state of the cutting motor clutch device 5. When the user operates the button to start the left and right cutting, the electric control box 11 judges whether the cutting motor clutch device 5 is pushed into the rocker arm 2. When the cutting motor clutch device 5 is pushed into the rocker arm 2, the motor shaft of the drum motor 6 is engaged with the transmission gear at this time, and then the electric control box 11 drives the drum motor 6 to start working. The drum motor 6 is used for driving the drum 3 to rotate when the cutting motor clutch device 5 is pushed into the rocker arm 2, so that the simulation model has the drum 3, the rocker arm 2, the internal waterway and the oil way of the real coal mining machine, and can realize the drum cutting function of the real coal mining machine.

[0028] In addition, the intermediate control box 1 further comprises a pump motor 13, an oil tank 14 and a hydraulic oil cylinder 15 mounted on the traction part 12. The hydraulic oil cylinder 15 is fixedly connected with the rocker arm 2. Specifically, the rocker arm 2 and the hydraulic oil cylinder 15 are connected by a pin shaft structure. The pump motor 13 is connected with the electric control box 11 and the hydraulic oil cylinder 15 respectively, and the oil tank 14 is connected with the hydraulic oil cylinder 15 through an oil way. When the user operates the button to start the rocker arm lifting, the electric control box 11 is used for controlling the pump motor 13 to work, and the pump motor 13 is used for driving the hydraulic oil cylinder 15 to extend and retract, so as to drive the rocker arm 2 to lift through the extension and retraction of the hydraulic oil cylinder 15, so that the simulation model has the drum 3, the rocker arm 2, the internal waterway and the oil way of the real coal mining machine, and can realize the rocker arm lifting function of the real coal mining machine.

[0029] The bottom of the traction part 12 is provided with a walking device 4, which is used for driving the model to walk by driving the traction part 12, and then the model can be manually pushed to walk, which is convenient to carry. In addition, the traction part 12 can be further provided with a traction motor 16, and the traction motor 16 is in communication connection with the electric control box 11. The walking device 4 comprises a walking box and walking wheels arranged on the walking box. The walking box is fixedly connected with the bottom of the traction part 12, and the walking wheels are engagedly connected with the pin row arranged on the scraper of the model bottom. When the user operates the button to start the traction walking, the electric control box 11 is used for controlling the traction motor 16 to work, and the traction motor 16 is used for driving the walking wheels to engage and walk on the pin row by driving the traction part 12. In this way, the model can not only be manually pushed to walk, but also be automatically controlled to walk by the traction motor 16, so that the simulation model has the traction part 12 of the real coal mining machine, and can realize the left and right traction walking function of the real coal mining machine.

[0030] In addition, the coal mining machine simulation model is also equipped with a 30m long real scraper, and a real gear is used to engage the track. Since the coal mining machine simulation model is only used for teaching and experiment on the surface of the well, it does not have harsh working conditions such as high load and high vibration, and the like.Figure 3 In the embodiment, the hard plastic roller 9 is arranged at the bottom of the support shoe 8. Compared with the pure metal support shoe 8 of the real coal mining machine, the support shoe 8 is only composed of the support leg 7 and the support shoe 8 without the hard plastic roller 9, so that the friction between the support shoe 8 and the scraper rail can be effectively reduced, the power requirement of the traction motor 16 is reduced, and the pressure of the traction part 12 is reduced.

[0031] The intermediate control box 1 can further include a frequency converter box 17 connected with the drum motor 6, the traction motor 16 and the pump motor 13 and in communication connection with the electric control box 11, so that the electric control box 11 drives the drum motor 6, the traction motor 16 and the pump motor 13 to start working through controlling the frequency converter box 17.

[0032] The simulation model provided by the embodiment has the drum, the rocker arm, the traction part and the internal water and oil circuits of the real coal mining machine, and can realize the conventional and automatic functions of the real coal mining machine, so that the intuitiveness and authenticity of teaching are significantly improved.

[0033] In addition, the coal mining machine simulation model of the embodiment further reforms the cutting motor clutch device 5 by installing a proximity switch at the center of the drum 3. When the cutting motor clutch device 5 is manually rotated and pulled out, the drum 3 cannot rotate. After the cutting motor clutch device 5 is closed, the drum 3 can normally operate. Specifically, a first relay is installed in the drum 3, and the first relay is powered by a safety 24V. The switch contact corresponding to the first relay is connected in series in the power supply circuit of the drum motor 6. A first proximity switch is installed on the cutting motor clutch device 5, and the first proximity switch can be a push-pull proximity switch. The first proximity switch is connected in series in the power supply circuit of the first relay. The first proximity switch is used to close when the cutting motor clutch device 5 is pushed in, the switch contact corresponding to the first relay is used to attract when the first proximity switch is closed, and the drum motor 6 is used to drive the drum 3 to rotate when the switch contact corresponding to the first relay is attracted, so as to push in the cutting motor clutch device 5. When the first proximity switch is closed, the first relay coil is electrified, the switch contact corresponding to the first relay is attracted, the power supply circuit of the drum motor 6 is closed, the drum motor 6 operates, and the drum 3 rotates. When the cutting motor clutch device 5 is pulled out, the first proximity switch is opened, the switch contact corresponding to the first relay is opened, the circuit of the drum motor 6 is disconnected, the drum motor 6 stops operating, and the drum 3 stops rotating.

[0034] The electric control box 11 of the embodiment adopts the TDECS distributed second-generation DSP electric control system of the real coal mining machine, including a BOC (basic operation control module), a HPC (traction comprehensive protection control module), an AXI (analog mixed input module), a WCR (remote control receiving module) and a MOC (motor start-stop control module), and is equipped with a start warning device, a gas power-off device, an end operation station and a remote controller and other peripheral devices.

[0035] The existing coal mining machine model is mostly a small model for display, which cannot reach the size of a real coal mining machine, and does not have the intuitiveness and authenticity of teaching. Therefore, the sizes of the drum 3, the rocker arm 2 and the intermediate control box 1 included in the simulation model of the embodiment are the same as those of the corresponding drum, rocker arm and intermediate control box of a real coal mining machine, thereby being able to provide a one-to-one teaching and experimental coal mining machine simulation model with the intuitiveness and authenticity of teaching. In the embodiment, the traction part 12 adopts a profile frame structure, and the rocker arm 2 and the drum 3 adopt an engineering plastic material.

[0036] The existing coal mining machine model cannot carry intelligent peripheral devices of a real coal mining machine, and does not have the secondary development property. Therefore, the coal mining machine simulation model of the embodiment also carries a plurality of peripheral devices. The peripheral devices include a start warning device, a gas power-off instrument, a end station and a remote controller. The start warning device, the gas power-off instrument and the end station are respectively connected with a basic operation control module (BOC module) in the electric control box 11 through an aviation plug, a wiring row and a wire passing group. The remote controller is wirelessly connected with an antenna on the cover plate of the electric control box 11, sends a control signal and receives a feedback signal through the antenna, the antenna is connected with a remote control receiving module (WCR module) in the cavity of the electric control box 11, thereby enabling the coal mining machine model to realize the functions of start warning, end station control and remote controller control.

[0037] In addition, the coal mining machine simulation model also includes a pilot power-on circuit to realize the function of pilot power-on. As shown in Figure 4 When water flows through the coal mining machine, the water pressure contact point is attracted, the isolation switch is closed before power-on, the main stop button is pulled out, and each contact point of the pilot circuit is closed. Then, the main start button is pressed for three seconds, the pilot circuit is completely closed, the front stage combination switch coil (-XQA:1 and -XQA:2, which are connected to the front stage combination switch coil through the main cable signal line) is powered on, the combination switch is closed, the coal mining machine is powered on, the front stage 1140 / 3300V is converted to 220V through the traction transformer to supply power to the power module, the power module supplies power to each function control module, the BOC self-protection contact point (-JX214-16 switch of the BOC module) is attracted, at this time, the start warning device beeps three times and the contact point (-YJ3-4) is disconnected. Figure 4

[0038] The existing coal mining machine model does not have the functions of fault simulation and simulation experiment. In order to realize various fault simulation and simulation functions, the simulation model of the embodiment adds left and right limit and various fault simulation functions. Specifically, in order to realize the simulation and delay of the braking system, a delay on-off control circuit is built to realize the normal display of the working process of the coal mining machine braking system, simulate the brake release fault of the coal mining machine, and facilitate the teaching of the coal mining machine braking system. As shown in Figure 5 ​As shown, the time delay relay is connected to the brake system to replace the oil pressure relay feedback contact in the original brake system. The model also includes a time delay relay, a brake release command relay and a power supply. The power supply uses a non-intrinsically safe 24V power supply to power the time delay relay. The time delay relay is connected in series in the traction comprehensive protection control module (HPC module) in the electric control box 11, and the time delay absorption time of the time delay relay can be set. The time delay relay starts timing from power-on, so the power supply needs to be controlled by the brake release command relay, which is connected in series in the power supply circuit composed of the time delay relay and the power supply. The brake release command relay is used to close after the model is powered on, and the electric control box 11 is used to collect the closing time of the time delay relay, and send a fault signal when the closing time is greater than the preset time delay absorption time. Specifically, after the shearer model is powered on, the brake release command relay is absorbed (i.e. HPCJ2.5-9 is absorbed), the non-intrinsically safe 24V power supply powers the time delay relay, and the time delay relay starts timing. If the preset time delay absorption time of the set time delay relay contact (15-18) is 3s, when the set time delay relay contact is absorbed for 0-3s, the electric control box 11 normally receives the brake release confirmation command, the frequency converter normally drives the traction motor 16 to run, and the display screen displays "the brake has been released". When the set time delay relay contact is greater than 3s, the electric control box 11 receives the brake release confirmation command timeout, the frequency converter does not drive the traction motor 16 and reports the brake release fault code, and the display screen displays "the brake has not been released", thereby realizing the simulation of the shearer brake release fault.

[0039] In order to realize the function of shearer model head and tail limiting, the proximity switch and relay are connected to the shearer pilot circuit, as shown in Figure 6The model further comprises two fixed baffles, which are arranged at two ends of the model and have a gap with a predetermined distance from the ends of the model, i.e. the fixed baffles are arranged at a predetermined distance from the head and tail of the model. The model further comprises a second proximity switch, a second relay, a third proximity switch and a third relay. The second proximity switch is arranged at one end of the model, and the third proximity switch is arranged at the other end of the model, i.e. the second proximity switch and the third proximity switch are arranged at the head and tail of the model respectively. The normally closed contact corresponding to the second relay and the normally closed contact corresponding to the third relay are connected in series in the pilot circuit of the model, the second proximity switch is connected in series in the power supply circuit of the second relay, and the third proximity switch is connected in series in the power supply circuit of the third relay. The second proximity switch and the third proximity switch are used to be closed when the distance between the ends of the model and the fixed baffles is equal to the predetermined distance, the normally closed contact corresponding to the second relay is used to be opened when the second proximity switch is closed, and the normally closed contact corresponding to the third relay is used to be opened when the third proximity switch is closed, so that when the model is pulled to a predetermined distance from the fixed baffles, the proximity switch approaches the fixed baffles, the normally open contact of the proximity switch is closed, the non-intrinsically safe 24V supplies power to the relay coil, the normally closed contact (R1-R2) of the relay is opened, the pilot circuit is opened, and the coal mining machine is powered off, thereby realizing the function of limiting the head and tail of the model, and effectively preventing misoperations such as failure to stop in time. The second proximity switch and the third proximity switch can be M8 NPN capacitive proximity switches.

[0040] A temperature sensor PT100 outputs a resistance value of 80-178Ω through temperature change, and a current transformer outputs a resistance value of 0-10Ω through current change. An analog mixed input module (AXI module) reads corresponding temperature and current by receiving the change of the resistance value, and transmits the temperature and current to a BOC module through a CAN bus and displays the temperature and current on a display screen. When the BOC module detects that the current exceeds 130% of the rated current of the motor, the overload reverse traction protection is started, and when the current exceeds 155%, the overload shutdown protection is started. When the temperature exceeds a threshold value, the shutdown protection is started. In order to realize the simulation of the protection function, the analog mixed input module (AXI module) of the electric control box 11 of the embodiment is connected with the first variable resistance box and the second variable resistance box, i.e. the two variable resistance boxes are connected to the AXI module of the electric control box 11. The analog mixed input module is used to obtain the temperature value by reading the resistance value of the first variable resistance box and obtain the current value by reading the resistance value of the second variable resistance box, so as to realize the simulation of the temperature and current of the drum motor 6, the traction motor 16 and the pump motor 13 in the coal mining machine model, and the resistance value output by the resistance box can be adjusted to simulate extreme working condition temperature and current, obtain the coal mining machine alarm information, and achieve the expected teaching effect.

[0041] The box wall of the electric control box 11 in the simulation model in the embodiment is thinned compared to the box wall of the real coal mining machine, and the front plate of the electric control box 11 is made of organic glass material, so as to facilitate observation of the running status of the internal modules of the electric control box 11. The hub of the drum 3 and the cutting tooth are made by using the 3D printing technology. The traction part 12 includes a straight tooth and a planetary reducer. In order to simplify the structure of the traction part 12, the traction part 12 in the embodiment can also use a belt and chain transmission instead of a complex and heavy metal gear transmission and a planetary reducer structure. An organic glass observation window is reserved above the rocker arm 2, and the gear transmission process simulated by the n-stage plastic gear can be observed.

[0042] In addition, the coal mining machine simulation model in the embodiment also develops computer software training content, reserves most of the interfaces of the intelligent coal mining machine, and the configured module software and hardware are the latest versions, have a memory cutting function program, and can perform memory coal cutting operation demonstration when the working face length condition is met. In the later period, peripheral devices such as sound and light early warning, iris recognition, voice remote control, machine vision, millimeter wave radar, LASC inertial navigation finding straight, three-dimensional geological model, etc. can be carried, and the hydraulic support, electro-hydraulic control are matched to realize the construction of the four-in-one simulation working face on the surface of the well, which has high secondary development value and important long-term significance for the promotion of unmanned and intelligent working face.

[0043] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In summary, the content of the present application should not be understood as a limitation of the present application.

Claims

1. A coal mining machine simulation model, characterized in that, The model includes an intermediate control box; The intermediate control box includes an electrical control box and two traction units; the two traction units are located at opposite ends of the intermediate control box; the electrical control box is located between the two traction units; both ends of each traction unit are connected to the electrical control box and a rocker arm respectively; the free end of the rocker arm is connected to a roller. The electrical control box is used to drive the drum to rotate and to drive the rocker arm to lift and lower via hydraulic means; A walking device is provided at the bottom of the traction unit; the walking device is used to drive the model to walk by driving the traction unit. The rocker arm is equipped with a cutting motor clutch device; the cutting motor clutch device is communicatively connected to the electrical control box; a drum motor is mounted on the drum; the motor shaft of the drum motor is fixedly connected to the rotation shaft of the drum; the electrical control box is used to control the operation of the drum motor according to the working status of the cutting motor clutch device; the drum motor is used to drive the drum to rotate when the cutting motor clutch device is pushed into the rocker arm; A first relay is installed inside the drum, and the switch contacts corresponding to the first relay are connected in series in the power supply circuit of the drum motor; a first proximity switch is installed on the cutting motor clutch device, and the first proximity switch is connected in series in the power supply circuit of the first relay; the first proximity switch is used to close when the cutting motor clutch device is pushed in; the switch contacts corresponding to the first relay are used to engage when the first proximity switch is closed; the drum motor is used to drive the drum to rotate when the switch contacts corresponding to the first relay are engaged. The model also includes two fixed baffles; the two fixed baffles are disposed at both ends of the model and have a predetermined distance between them and the ends of the model; The model also includes a second proximity switch, a second relay, a third proximity switch, and a third relay; the second proximity switch is installed at one end of the model, and the third proximity switch is installed at the other end of the model; The normally closed contacts of the second relay and the third relay are both connected in series in the pilot circuit of the model; the second proximity switch is connected in series in the power supply circuit of the second relay, and the third proximity switch is connected in series in the power supply circuit of the third relay. Both the second and third proximity switches are used to close when the distance between the end of the model and the fixed baffle is equal to a preset distance; The normally closed contact corresponding to the second relay is used to open when the second proximity switch is closed; the normally closed contact corresponding to the third relay is used to open when the third proximity switch is closed.

2. The coal mining machine simulation model as described in claim 1, characterized in that, The intermediate control box also includes a pump motor, an oil tank, and a hydraulic cylinder mounted on the traction unit; the hydraulic cylinder is fixedly connected to the rocker arm; the pump motor is connected to both the electrical control box and the hydraulic cylinder; the oil tank and the hydraulic cylinder are connected via an oil circuit. The electrical control box is used to control the operation of the pump motor; The pump motor is used to drive the hydraulic cylinder to extend and retract.

3. The coal mining machine simulation model as described in claim 1, characterized in that, The traction unit is equipped with a traction motor; the traction motor is communicatively connected to the electrical control box; the walking device includes a walking box and walking wheels mounted on the walking box; the walking box is fixedly connected to the bottom of the traction unit; the walking wheels are engaged with pins on a scraper conveyor mounted on the bottom of the model. The electrical control box is used to control the operation of the traction motor; the traction motor is used to drive the traveling wheel to engage and move on the pin row by driving the traction unit.

4. The coal mining machine simulation model as described in claim 1, characterized in that, The dimensions of the drum, the rocker arm, and the intermediate control box are the same as those of the corresponding drum, rocker arm, and intermediate control box on an actual coal mining machine.

5. A coal mining machine simulation model as described in claim 1, characterized in that, The model is also equipped with multiple peripheral devices, including a start-up warning device, a gas power-off device, an end-point operation station, and a remote controller. The start-up warning device, the gas power-off device, and the end-point operation station are respectively connected to the basic operation control module in the electrical control box via aviation plugs, terminal blocks, and cable assemblies. The remote controller is wirelessly connected to an antenna on the cover of the electrical control box. The antenna is connected to a remote control receiving module in the electrical control box.

6. A coal mining machine simulation model as described in claim 1, characterized in that, The model also includes a time-delay relay, a brake release command relay, and a power supply; the time-delay relay is connected in series in the traction integrated protection control module in the electrical control box, and the time delay engagement time of the time-delay relay is set; the power supply is used to supply power to the time-delay relay; the brake release command relay is connected in series in the power supply circuit formed by the time-delay relay and the power supply; the brake release command relay is used to close after the model is powered on. The electrical control box is used to collect the closing time of the time-delay relay and issue a fault signal when the closing time is greater than the preset delay engagement time. After the model is powered on, the release command relay closes, the power supply supplies power to the time-delay relay, and the time-delay relay starts timing. When the set delay relay engages within a time less than or equal to the preset delay engagement time, the electrical control box normally receives the release confirmation command and displays "Brake released". When the set delay relay engages within a time greater than the preset delay engagement time, the electrical control box receives the release confirmation command timeout and displays "Brake not released", thus simulating the release fault of the coal mining machine.

7. A coal mining machine simulation model as described in claim 1, characterized in that, The electrical control box also includes an analog mixed input module, which is connected to the first and second rheostat boxes. The analog mixed input module is used to obtain the temperature value by reading the resistance value of the first rheostat box, obtain the current value by reading the resistance value of the second rheostat box, and obtain the alarm information of the coal mining machine by adjusting the resistance value to simulate extreme operating conditions of temperature and current.

Images