Non-coal mine pillar-free longwall mining machine

Abstract

The invention belongs to the technical field of mining machines, and particularly relates to a non-coal mine pillar-free long-wall mining machine which comprises a machine body and a walking part arranged below the machine body, the side wall of the machine body is connected with an electric control box and a PLC, and arc-shaped loading plates are arranged on the left side and the right side of the machine body. In the process of mining ore in a mine by using a mining machine, the dust concentration in the mine tunnel can be automatically detected while dust removal work is carried out on the mine tunnel, and when it is detected that the dust concentration in the mine tunnel is abnormal, an operator can be reminded of the site condition in time, so that the working efficiency is improved. The device is simple in structure and convenient for operators to timely break away from the inside of the mine tunnel, when the dust concentration is abnormal due to local looseness of the mine tunnel, the escape probability of the operators is greatly improved, oil stains on the surface of the optical signal receiver can be automatically treated, and the problem of abnormal receiving of the optical signal receiver caused by the oil stains is avoided.

Description

Technical Field

[0001] This invention belongs to the field of mining machine technology, and in particular relates to a pillarless longwall mining machine for non-coal mines. Background Technology

[0002] Traditional pillar support methods leave behind a large amount of unrecoverable pillar resources. Mining machines, which operate without pillars, can maximize the recovery of ore resources, reduce resource waste, and improve the economic efficiency of mines. Mining machines are large-scale mechanical equipment widely used in mining, mainly for cutting, crushing, and loading ore from ore layers. Their emergence has greatly improved mining efficiency and reduced the intensity of manual labor. For example, the self-drilling longwall mining machine and mining method for hard minerals proposed in patent publication number CN116446869B can carry out mining operations more stably and efficiently.

[0003] Mining machines generate a large amount of dust during mining operations. If this dust is not removed, it can easily be inhaled by workers, potentially leading to various respiratory illnesses over time. Therefore, dust removal is essential during mining operations. However, existing dust removal equipment lacks the ability to detect dust concentration within the mine tunnel. For example, when the mine tunnel becomes loose, the dust concentration can increase significantly. Operators cannot accurately assess the changes in dust concentration with the naked eye, greatly reducing their chances of timely escape from the mine tunnel.

[0004] To address these issues, a pillarless longwall mining machine for non-coal mines is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a pillarless longwall mining machine for non-coal mines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pillarless longwall mining machine for non-coal mines, comprising a machine body and a traveling section disposed below the machine body, wherein an electrical control box and a PLC controller are connected to the side wall of the machine body, arc-shaped loading plates are provided on both the left and right sides of the machine body, and cutting sections are provided on both the left and right sides of the machine body, wherein the cutting sections are connected to the internal hydraulic system of the machine body, and further comprising: Two dust collector fans are provided, with their upper sidewalls fixedly connected to the upper sidewall of the machine body. The air inlet ends of the two dust collector fans are connected to air inlet hoods, and the air outlet ends of the two dust collector fans are fixedly connected to the same horizontal pipe. The inner wall of the horizontal pipe is provided with two control valves and two detection components. The rear sidewall of the horizontal pipe is fixedly connected to a dust delivery pipe, and the lower end of the dust delivery pipe is fixedly connected to a dust collection box. The dust collection box is fixedly connected to the machine body, and the sidewall of the dust collection box is provided with a filter element. The cooling system is fixedly connected to the side wall of the machine body. The pipes inside the cooling system provide pressurized cooling water to the mining machine motor, electrical control box, etc. through the filter detection component.

[0007] Preferably, the detection assembly includes a detection cylinder and a light signal generator. The detection cylinder is connected inside a horizontal tube. The light signal generator is fixedly connected to the lower inner wall of the detection cylinder. A light signal receiver is fixedly connected to the upper inner wall of the detection cylinder. The light signal receiver is electrically connected to a PLC controller. A cleaning assembly is provided inside the detection cylinder.

[0008] Preferably, the cleaning component includes a light source and a color recognition sensor, which are symmetrically arranged on the left and right sides of the light signal generator. The color recognition sensor is electrically connected to the PLC controller. A placement groove is formed on the upper inner wall of the detection cylinder. A first electric push rod is fixedly connected to the upper wall of the detection cylinder. The moving end of the first electric push rod is located in the placement groove and is fixedly connected to a dustproof plate. A linear motor is fixedly connected to the upper wall of the dustproof plate. A moving frame is fixedly connected to the moving end of the linear motor. A cleaning cotton is fixedly connected to the upper wall of the moving frame. A scraper box and a rinsing box are fixedly connected to the upper wall of the detection cylinder. A delivery pump is connected to the side wall of the rinsing box. The outlet end of the delivery pump is located in the placement groove and is fixedly connected to a water spray head. A water suction pump is connected to the side wall of the scraper box. The feed end of the water suction pump is located in the placement groove and is connected to a scraper head assembly.

[0009] Preferably, the wiper head assembly includes an air intake box and a conical cylinder. The air intake box is connected to the feed end of the delivery pump, the conical cylinder is connected to the air intake box, and water inlets are provided on both sides of the conical cylinder.

[0010] Preferably, the cooling system includes a water tank and a pump. The water tank is fixedly connected to the side wall of the machine body. The inlet end of the pump is connected to the upper side wall of the water tank. A filter box is fixedly connected to the side wall of the machine body. The outlet end of the pump is connected to the filter box through a cooling component. A filter screen is fixedly connected to the inner wall of the filter box. An induction box is fixedly connected to the upper side wall of the water tank. Both sides of the induction box are connected to the upper side wall of the filter box through connecting pipes. Piston seats are fixedly connected to both sides of the induction box through springs. A conductive block is embedded in the upper side wall of the piston seat. The conductive block is electrically connected to an external power source. A resistance plate is embedded in the upper side wall of the induction box. The end of the resistance plate away from the conductive block is electrically connected to a buzzer through a PLC controller. The buzzer is connected to the machine body. An analysis component is connected to the upper side wall of the induction box.

[0011] Preferably, the analysis component includes an analysis box and a curved tube. The upper sidewalls of the analysis box and the induction box are fixedly connected. The analysis box is connected to the induction box via the curved tube and a connecting pipe. The upper end of the curved tube is located inside the analysis box and is fixedly connected to a telescopic water bladder. A piston plate is fixedly connected to the right end of the telescopic water bladder. A retaining ring located to the right of the piston plate is fixedly connected to the inner wall of the analysis box. The same spring is fixedly connected between the retaining ring and the piston plate. A piston block is fixedly connected to the right side of the retaining ring via the spring. A transverse hole is opened on the side wall of the piston block, and a rotating plate covering the right side of the transverse hole is hinged to the right side wall of the piston block. A trigger block is fixedly connected to the left side wall of the piston block and is electrically connected to an external power supply. A trigger plate is embedded in the lower inner wall of the analysis box. The trigger plate is electrically connected to a buzzer via a PLC controller. An air vent is opened on the right side wall of the analysis box. A microporous plate located between the retaining ring and the piston block is embedded in the upper side wall of the analysis box.

[0012] Preferably, the inner walls of both the left and right sides of the detection cylinder are provided with storage slots, and a second electric push rod is inserted into the side wall of the storage slot. The moving end of the second electric push rod is fixedly connected to a third electric push rod, and the moving end of the third electric push rod is fixedly connected to a protective cover.

[0013] Preferably, the cooling assembly includes a cooling plate and multiple heat sinks, the cooling plate is fixedly connected to the side wall of the water tank, the multiple heat sinks are evenly distributed on the surface of the cooling plate, and the liquid outlet of the pump passes through the multiple heat sinks in a serpentine manner.

[0014] Compared with existing technologies, the advantages of a pillarless longwall mining machine for non-coal mines are: 1. Through the configuration of the machine body, walking unit, PLC controller, arc-shaped loading plate, cutting unit, dust removal fan, air intake hood, horizontal pipe, dust conveying pipe, dust collection box, filter element, and detection components, the mining machine can automatically detect the dust concentration inside the mine tunnel while performing dust removal work during the mining process. When an abnormal dust concentration is detected in the mine tunnel, it can promptly alert the operator to the situation on site, facilitating the operator's timely evacuation from the mine tunnel and significantly improving the operator's escape probability.

[0015] 2. With the cleaning and scraper components, the machine can automatically detect whether there is oil on the surface of the optical signal receiver when the mining machine is stopped for maintenance. If oil is detected on the surface of the optical signal receiver due to unburned fuel emitted by the mining or transportation equipment, the machine can automatically clean the oil, thus avoiding the problem of abnormal reception of the optical signal receiver caused by oil.

[0016] 3. Through the set cooling system and analysis components, the components inside the mining machine, such as the mining machine motor and electrical control box, can be cooled down quickly when the mining machine is working. It can also automatically filter the coolant in the cooling system and detect the passivity of the filter screen inside the filter component, ensuring that the coolant is fully filtered while also ensuring the flow of the coolant. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a pillarless longwall mining machine for non-coal mines provided by the present invention; Figure 2 This is a schematic diagram of the cooling system in a pillarless longwall mining machine for non-coal mines provided by the present invention; Figure 3 This is a schematic diagram of the internal structure of the induction box in a pillarless longwall mining machine for non-coal mines provided by the present invention; Figure 4 This is a schematic diagram of the structure of the analysis component in a pillarless longwall mining machine for non-coal mines provided by the present invention; Figure 5 This is a schematic diagram of the internal structure of the filter box in a pillarless longwall mining machine for non-coal mines provided by the present invention; Figure 6 This is a schematic diagram showing the positional relationship between the horizontal pipe, dust conveying pipe, and dust collection box in a pillarless longwall mining machine for non-coal mines provided by the present invention; Figure 7 This is a schematic diagram of the cleaning component in a pillarless longwall mining machine for non-coal mines provided by the present invention; Figure 8This invention provides a pillarless longwall mining machine for non-coal mines. Figure 7 An enlarged schematic diagram of part A in the middle; Figure 9 This is a schematic diagram of the water scraper assembly in a pillarless longwall mining machine for non-coal mines provided by the present invention.

[0018] In the diagram: 1. Machine body; 2. Walking unit; 3. PLC controller; 4. Arc-shaped loading plate; 5. Cutting unit; 6. Dust removal fan; 7. Air inlet hood; 8. Horizontal pipe; 9. Dust conveying pipe; 10. Dust collection box; 11. Filter element; 12. Detection assembly; 121. Detection cylinder; 122. Light signal generator; 13. Light signal receiver; 14. Cleaning assembly; 141. Light source; 142. Color recognition sensor; 15. Placement slot; 16. First electric push rod; 17. Dustproof plate; 18. Linear motor; 19. Moving frame; 20. Cleaning cotton; 21. Scraper box; 22. Rinsing box; 23. Transfer pump; 24. Spray head; 25. Water suction pump; 26. Scraper head assembly; 261. Suction box 262. Conical cylinder; 27. Protective cover; 28. Cooling system; 281. Water tank; 282. Pump; 29. ​​Filter box; 30. Filter screen; 31. Induction box; 32. Connecting pipe; 33. Piston seat; 34. Conductive block; 35. Resistance plate; 36. Analysis component; 361. Analysis box; 362. Bend; 37. Telescopic water bladder; 38. Piston plate; 39. Retaining ring; 40. Piston block; 41. Horizontal hole; 42. Rotating plate; 43. Trigger block; 44. Trigger plate; 45. Vent; 46. Microporous plate; 47. Storage slot; 48. Second electric actuator; 49. Third electric actuator; 50. Buzzer; 51. Cooling component; 511. Cooling plate; 512. Heat sink. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1-9 As shown, a pillarless longwall mining machine for non-coal mines includes a body 1 and a traveling section 2 located below the body 1. An electrical control box and a PLC controller 3 are connected to the side wall of the body 1. Arc-shaped loading plates 4 are provided on both the left and right sides of the body 1. Cutting sections 5 are provided on both the left and right sides of the body 1, and the cutting sections 5 are connected to the internal hydraulic system of the body 1. The machine also includes: Two dust removal fans 6 are fixedly connected to the upper side wall of the body 1. The air inlet end of the two dust removal fans 6 is connected to the air inlet hood 7. The air outlet end of the two dust removal fans 6 is fixedly connected to the same horizontal pipe 8. The inner wall of the horizontal pipe 8 is provided with two control valves and two detection components 12. The rear side wall of the horizontal pipe 8 is fixedly connected to the dust delivery pipe 9. The lower end of the dust delivery pipe 9 is fixedly connected to the dust collection box 10. The dust collection box 10 is fixedly connected to the body 1. The side wall of the dust collection box 10 is provided with filter element 11. The cooling system 28 is fixedly connected to the side wall of the machine body 1. The pipes inside the cooling system 28 provide pressurized cooling water to the mining machine motor, electrical control box, etc. through the filter detection component 12.

[0021] The detection assembly 12 includes a detection cylinder 121 and a light signal generator 122. The detection cylinder 121 is connected inside the horizontal tube 8. The light signal generator 122 is fixedly connected to the lower inner wall of the detection cylinder 121. A light signal receiver 13 is fixedly connected to the upper inner wall of the detection cylinder 121. The light signal receiver 13 is electrically connected to the PLC controller 3. A cleaning assembly 14 is provided inside the detection cylinder 121.

[0022] The cleaning assembly 14 includes a light source 141 and a color recognition sensor 142. The light source 141 and the color recognition sensor 142 are symmetrically arranged on the left and right sides of the light signal generator 122. The color recognition sensor 142 is electrically connected to the PLC controller 3. A placement groove 15 is opened on the upper inner wall of the detection cylinder 121. A first electric push rod 16 is fixedly connected to the upper wall of the detection cylinder 121. The moving end of the first electric push rod 16 is located in the placement groove 15 and is fixedly connected to a dustproof plate 17. A linear motor 18 is fixedly connected to the upper wall of the dustproof plate 17. A moving frame 19 is fixedly connected to the moving end of the linear motor 18. A cleaning cotton 20 is fixedly connected to the upper wall of the moving frame 19. The upper wall of the detection cylinder 121 is fixedly connected to... The system is equipped with a scraper tank 21 and a flushing tank 22. The side wall of the flushing tank 22 is connected to a delivery pump 23. The outlet of the delivery pump 23 is located in the placement tank 15 and is fixedly connected to a water spray head 24. The side wall of the scraper tank 21 is connected to a suction pump 25. The feed end of the suction pump 25 is located in the placement tank 15 and is connected to a scraper head assembly 26. When the mining machine is stopped for maintenance, it can automatically detect whether there is oil on the surface of the optical signal receiver 13. When it is detected that the surface of the optical signal receiver 13 is covered with oil due to unburned fuel discharged by the mining equipment or transportation equipment, it can automatically treat the oil on the surface of the optical signal receiver 13 to avoid the problem of abnormal reception of the optical signal receiver 13 caused by oil.

[0023] The wiper head assembly 26 includes an air intake box 261 and a conical cylinder 262. The air intake box 261 is connected to the feed end of the delivery pump 23, and the conical cylinder 262 is connected to the air intake box 261. Water inlets are provided on both sides of the conical cylinder 262 to squeeze out the dirty water inside the cleaning cotton 20.

[0024] The cooling system 28 includes a water tank 281 and a pump 282. The water tank 281 is fixedly connected to the side wall of the body 1. The inlet end of the pump 282 is connected to the upper side wall of the water tank 281. A filter box 29 is fixedly connected to the side wall of the body 1. The outlet end of the pump 282 is connected to the filter box 29 through a cooling assembly 51. A filter screen 30 is fixedly connected to the inner wall of the filter box 29. An induction box 31 is fixedly connected to the upper side wall of the water tank 281. Both sides of the induction box 31 are connected to the upper side of the filter box 29 through connecting pipes 32. The side walls are connected, and piston seats 33 are fixedly connected to the left and right sides of the induction box 31 by springs. A conductive block 34 is embedded in the upper side wall of the piston seat 33. The conductive block 34 is electrically connected to an external power supply. A resistor plate 35 is embedded in the upper side wall of the induction box 31. The end of the resistor plate 35 away from the conductive block 34 is electrically connected to a PLC controller 3 and a buzzer 50. The buzzer 50 is connected to the body 1. An analysis component 36 is connected to the upper side wall of the induction box 31, which can automatically detect the clogging of the filter screen 30.

[0025] The analysis component 36 includes an analysis box 361 and a bent pipe 362. The analysis box 361 and the upper side wall of the sensing box 31 are fixedly connected. The analysis box 361 is connected to the connecting pipe 32 through the bent pipe 362. The upper end of the bent pipe 362 is located inside the analysis box 361 and is fixedly connected to a telescopic water bladder 37. A piston plate 38 is fixedly connected to the right end of the telescopic water bladder 37. A retaining ring 39 located on the right side of the piston plate 38 is fixedly connected to the inner wall of the analysis box 361. The same spring is fixedly connected between the retaining ring 39 and the piston plate 38. A piston block 40 is fixedly connected to the right side of the retaining ring 39 through the spring. A transverse hole 41 is provided on the side wall of the piston block 40, and a rotating plate 42 covering the right side of the transverse hole 41 is hinged to the right side of the piston block 40. A trigger block 43 is fixedly connected to the left side wall of the piston block 40, and the trigger block 43 is electrically connected to an external power supply. A trigger plate 44 is embedded in the lower inner wall of the analysis box 361. The trigger plate 44 is electrically connected to the buzzer 50 through the PLC controller 3. An air outlet 45 is provided on the right side wall of the analysis box 361. A microporous plate 46 located between the retaining ring 39 and the piston block 40 is embedded in the upper side wall of the analysis box 361, which can automatically detect whether the filter screen 30 is damaged.

[0026] The inner walls of both sides of the detection cylinder 121 are provided with storage slots 47. A second electric push rod 48 is inserted into the side wall of the storage slot 47. A third electric push rod 49 is fixedly connected to the moving end of the second electric push rod 48. A protective cover 27 is fixedly connected to the moving end of the third electric push rod 49, which can automatically protect the light source 141 and the color recognition sensor 142.

[0027] The cooling assembly 51 includes a cooling plate 511 and multiple heat sinks 512. The cooling plate 511 is fixedly connected to the side wall of the water tank 281. The multiple heat sinks 512 are evenly distributed on the surface of the cooling plate 511. The outlet end of the pump 282 passes through the multiple heat sinks 512 in a serpentine manner, which can quickly dissipate the heat inside the coolant.

[0028] The operating principle of this invention is explained as follows: During the mining process, the mining parameters are first set through the electrical control box, and the mining machine is started. The cutting part 5, driven by the rocker arm, cuts the ore according to a predetermined trajectory. The traveling part 2 automatically adjusts its position according to the mining progress. While the mining machine is working, the PLC controller 3 controls the dust removal fan 6 to work. The dust removal fan 6 transports the air escaping from the mine tunnel to the horizontal pipe 8 through the air intake hood 7, and then to the dust collection box 10 through the dust conveying pipe 9 for storage. The air filtered by the filter element 11 is discharged from the dust collection box 10. When the dust removal fan 6 transports dust, the air containing dust will first pass through the detection cylinder 121. While the dust removal fan 6 is working, the PLC controller 3 controls the light signal generator 122 to work. The light signal generator 122 transmits the light signal toward the light signal receiver 13. When the light passes through the dusty air, it is blocked by the dust. Dust particles absorb and scatter light, thus weakening the intensity of transmitted light. The light signal receiver 13 detects the projected light signal. When the mining machine digs into a locally loose area in the mine tunnel, the looseness of the mine tunnel means that the structural integrity of the rock has been damaged. The connection between the originally tightly bound rock particles becomes weak, and they are more likely to fall off under the influence of mining activities, thus increasing the dust concentration inside the mine tunnel. When the dust concentration increases, the intensity of the light signal received by the light signal receiver 13 will further decrease. The light signal receiver 13 will then send an electrical signal to the PLC controller 3, which will control the buzzer 50 to work, causing the buzzer 50 to emit an alarm sound (the alarm sound can be one of beeping, tapping, or pattering), thereby reminding the workers in the mine tunnel to escape in time and avoid the problem of local collapse when the coal mining machine digs into a locally loose area inside the mine tunnel. When the mining machine stops working, the PLC controller 3 controls the light source 141 to operate. The light signal emitted by the light source 141 is directed towards the lens on the surface of the light signal receiver 13. When the lens on the surface of the light signal receiver 13 is contaminated with oil due to unburned fuel emitted by the mining or transportation equipment, the oil first forms a thin film on the surface of the glass lens. When light shines on this film, part of the light is reflected on the upper surface of the film, and the other part passes through the film and is reflected at the interface between the glass lens and the film. These two reflected beams of light originate from the same light source 141 and have... A constant phase difference occurs when the optical path difference between two beams is exactly an integer multiple of the wavelength of the light, resulting in constructive interference and strengthening of the light of that specific wavelength. Conversely, when the optical path difference is an odd multiple of half the wavelength, destructive interference occurs, weakening the light of that wavelength. Because different wavelengths of light exhibit different degrees of strengthening and weakening during interference, we see different colors of light. Wavelengths that satisfy the constructive interference condition appear brighter, while wavelengths that do not satisfy the condition appear relatively darker, thus presenting various colors. After the color recognition sensor 142 detects the emitted color, it sends an electrical signal to the PLC controller 3. Upon receiving this signal, the PLC controller 3 controls the delivery pump 23 to operate. The delivery pump 23 sprays the cleaning fluid from the rinsing tank 22 onto the cleaning cotton 20 through the spray head 24. Then, the PLC controller 3 controls the first electric push rod 16 to operate. The first electric push rod 16, through the dustproof plate 17, drives the linear motor 18 and the cleaning cotton 20 to move downwards to a set position. Then, the PLC controller 3 controls the linear motor 18 to operate. The linear motor 18 operates, and the linear motor 18 drives the cleaning cotton 20 to move through the moving frame 19. The cleaning cotton 20 is used to clean the oil stains on the lens surface of the optical signal receiver 13. Then, the PLC controller 3 drives the linear motor 18 to move upward through the dustproof plate 17, so that the cleaning cotton 20 is placed below the wiper head assembly 26. Then, the PLC controller 3 controls the linear motor 18 to drive the cleaning cotton 20 to reciprocate. The conical cylinder 262 squeezes out the dirty water inside the cleaning cotton 20, and the water pump 25 transports the cleaned wastewater to the wiper tank 21 for storage. When the coal mining machine starts working, the PLC controller 3 controls the pump 282 to work. The pump 282 pumps the coolant inside the water tank 281 through the pipe and through the heat sink 512, so that the heat inside the coolant can be quickly dissipated. The coolant will be delivered to the filter box 29. After being filtered by the filter screen 30, the coolant will be delivered through the pipe to the coal mining machine motor and other components for cooling. The coolant after being filtered by the filter screen 30 will be delivered to the induction box 31 through the connecting pipes 32 on both sides, so that the piston block 40 is filled with coolant on both sides. When the filter screen 30 has good performance, the coolant passes through the filter screen 30 at a faster speed. The hydraulic pressure on both sides of the filter screen 30 is the same, so that the hydraulic pressure on both sides of the piston seat 33 is the same, and the piston seat 33 will not move. Conversely, when the filter screen 30 becomes clogged, its permeability is significantly reduced, and the hydraulic pressure on the left side of the filter screen 30 is greater than that on the right side. Similarly, the hydraulic pressure on the left side of the piston seat 33 is also greater than that on the right side. Under the influence of the hydraulic pressure difference, the piston seat 33 will drive the conductive block 34 to move to the right. After the pump 282 operates for one minute, the conductive block 34 will be electrically connected to the external power supply under the control of the PLC controller 3. As the piston seat 33 moves to the right, it will come into contact with the resistor plate 35. The more severe the clogging of the filter screen 30, the farther the piston seat 33 will drive the conductive block 34 to move to the right, and the closer the conductive block 34 will come into contact with the right end of the resistor plate 35. The right end of the resistor plate 35 is electrically connected to the PLC controller 3. Different positions of the conductive block 34 and the resistor plate 35 will result in different electrical signals being sent to the PLC controller 3. After receiving different electrical signals, the PLC controller 3 will control the buzzer 50 to operate with different alarm sounds to remind the operator of the clogging status of the filter screen 30. When coolant is supplied to the filter box 29, it is delivered to the analyzer 361 through the bend 362 and the connecting pipe 32 on the left, filling the telescopic water bladder 37 with liquid. The right end of the telescopic water bladder 37 drives the piston plate 38 to move to the right. The piston plate 38 compresses the air on the right side, causing it to be discharged from the analyzer 361 through the retaining ring 39, the transverse hole 41, and the air outlet 45. When the air passes through the transverse hole 41, it compresses the rotating plate 42, causing it to rotate at a certain angle to facilitate airflow. The more severe the blockage of the filter screen 30, the closer the piston plate 38 will move to the right. When the filter screen 30 is damaged, the water pressure on the left side of the filter screen 30 will drop sharply, causing the piston plate 38 to move further to the right. Under the elastic force of the spring, the telescopic water bladder 37 will be quickly squeezed, causing the liquid inside the telescopic water bladder 37 to be quickly discharged and the air pressure in the space on the right side of the piston plate 38 will drop rapidly. External air will then enter the right side of the piston block 40 through the air outlet 45. Under the action of air pressure, the piston block 40 will drive the trigger block 43 and the trigger plate 44 to contact. The trigger block 43 is electrically connected to the external power supply, and the trigger plate 44 is electrically connected to the PLC controller 3. When the PLC controller 3 receives the electrical signal from the trigger plate 44, it will control the buzzer 50 to work (at this time, the alarm sound of the buzzer 50 is different from the previous alarm sound). At the same time, external gas will slowly enter the left side of the piston block 40 through the microporous plate 46, causing the piston block 40 to gradually move to the right and return to its original position.

[0029] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pillarless longwall mining machine for non-coal mines, comprising a body (1) and a traveling section (2) disposed below the body (1), wherein an electrical control box and a PLC controller (3) are connected to the side wall of the body (1), and arc-shaped loading plates (4) are provided on both the left and right sides of the body (1), and cutting sections (5) are provided on both the left and right sides of the body (1), wherein the cutting sections (5) are connected to the internal hydraulic system of the body (1), characterized in that, Also includes: Two dust removal fans (6) are fixedly connected to the upper side wall of the body (1). The air inlet end of the two dust removal fans (6) is connected to the air inlet hood (7). The air outlet end of the two dust removal fans (6) is fixedly connected to the same horizontal pipe (8). The inner wall of the horizontal pipe (8) is provided with two control valves and two detection components (12). The rear side wall of the horizontal pipe (8) is fixedly connected to the dust delivery pipe (9). The lower end of the dust delivery pipe (9) is fixedly connected to the dust collection box (10). The dust collection box (10) is fixedly connected to the body (1). The side wall of the dust collection box (10) is provided with a filter element (11). The cooling system (28) is fixedly connected to the side wall of the machine body (1). The pipes inside the cooling system (28) provide pressurized cooling water to the mining machine motor, electrical control box and other components through the filter detection component (12).

2. The pillarless longwall mining machine for non-coal mines according to claim 1, characterized in that, The detection component (12) includes a detection cylinder (121) and a light signal generator (122). The detection cylinder (121) is connected inside the horizontal tube (8). The light signal generator (122) is fixedly connected to the lower inner wall of the detection cylinder (121). A light signal receiver (13) is fixedly connected to the upper inner wall of the detection cylinder (121). The light signal receiver (13) is electrically connected to the PLC controller (3). A cleaning component (14) is provided inside the detection cylinder (121).

3. The pillarless longwall mining machine for non-coal mines according to claim 2, characterized in that, The cleaning assembly (14) includes a light source (141) and a color recognition sensor (142). The light source (141) and the color recognition sensor (142) are symmetrically arranged on the left and right sides of the light signal generator (122). The color recognition sensor (142) is electrically connected to the PLC controller (3). The upper inner wall of the detection cylinder (121) is provided with a placement groove (15). The upper wall of the detection cylinder (121) is fixedly connected to a first electric push rod (16). The moving end of the first electric push rod (16) is located in the placement groove (15) and is fixedly connected to a dustproof plate (17). The upper wall of the dustproof plate (17) is fixedly connected to... A linear motor (18) is provided, and a moving frame (19) is fixedly connected to the moving end of the linear motor (18). A cleaning cotton (20) is fixedly connected to the upper side wall of the moving frame (19). A scraper box (21) and a rinsing box (22) are fixedly connected to the upper side wall of the detection cylinder (121). A delivery pump (23) is connected to the side wall of the rinsing box (22). The liquid outlet of the delivery pump (23) is located in the placement trough (15) and is fixedly connected to a water spray head (24). A water suction pump (25) is connected to the side wall of the scraper box (21). The feed end of the water suction pump (25) is located in the placement trough (15) and is connected to a scraper head assembly (26).

4. The pillarless longwall mining machine for non-coal mines according to claim 3, characterized in that, The wiper head assembly (26) includes an air intake box (261) and a conical cylinder (262). The air intake box (261) is connected to the feed end of the delivery pump (23), and the conical cylinder (262) is connected to the air intake box (261). Water inlets are provided on both sides of the conical cylinder (262).

5. A pillarless longwall mining machine for non-coal mines according to claim 1, characterized in that, The cooling system (28) includes a water tank (281) and a pump (282). The water tank (281) is fixedly connected to the side wall of the machine body (1). The inlet end of the pump (282) is connected to the upper side wall of the water tank (281). A filter box (29) is fixedly connected to the side wall of the machine body (1). The outlet end of the pump (282) is connected to the filter box (29) through a cooling assembly (51). A filter screen (30) is fixedly connected to the inner wall of the filter box (29). An induction box (31) is fixedly connected to the upper side wall of the water tank (281). The left and right sides of the induction box (31) are connected to... The tube (32) and the upper side wall of the filter box (29) are connected. The left and right sides of the sensing box (31) are fixedly connected to the piston seat (33) by springs. The upper side wall of the piston seat (33) is inlaid with a conductive block (34). The conductive block (34) is electrically connected to an external power supply. The upper side wall of the sensing box (31) is inlaid with a resistor plate (35). The end of the resistor plate (35) away from the conductive block (34) is electrically connected to the buzzer (50) through the PLC controller (3). The buzzer (50) is connected to the body (1). The upper side wall of the sensing box (31) is connected to the analysis component (36).

6. A pillarless longwall mining machine for non-coal mines according to claim 5, characterized in that, The analysis component (36) includes an analysis box (361) and a bend (362). The analysis box (361) and the upper side wall of the sensing box (31) are fixedly connected. The analysis box (361) is connected to the connecting pipe (32) through the bend (362). The upper end of the bend (362) is located inside the analysis box (361) and is fixedly connected to a telescopic water bladder (37). The right end of the telescopic water bladder (37) is fixedly connected to a piston plate (38). The inner wall of the analysis box (361) is fixedly connected to a retaining ring (39) located on the right side of the piston plate (38). The retaining ring (39) and the piston plate (38) are fixedly connected by the same spring. The right side of the retaining ring (39) is fixedly connected by the spring. There is a piston block (40), the side wall of the piston block (40) is provided with a transverse hole (41), and the right side wall of the piston block (40) is hinged with a rotating plate (42) covering the right side of the transverse hole (41). The left side wall of the piston block (40) is fixedly connected with a trigger block (43), and the trigger block (43) is electrically connected to an external power supply. The lower inner wall of the analysis box (361) is inlaid with a trigger plate (44), and the trigger plate (44) is electrically connected to a buzzer (50) through a PLC controller (3). The right side wall of the analysis box (361) is provided with an air outlet (45), and the upper side wall of the analysis box (361) is inlaid with a microporous plate (46) located between the retaining ring (39) and the piston block (40).

7. A pillarless longwall mining machine for non-coal mines according to claim 3, characterized in that, The inner walls of the left and right sides of the detection cylinder (121) are provided with storage slots (47). A second electric push rod (48) is inserted into the side wall of the storage slot (47). A third electric push rod (49) is fixedly connected to the moving end of the second electric push rod (48). A protective cover (27) is fixedly connected to the moving end of the third electric push rod (49).

8. A pillarless longwall mining machine for non-coal mines according to claim 5, characterized in that, The cooling assembly (51) includes a cooling plate (511) and a plurality of heat sinks (512). The cooling plate (511) is fixedly connected to the side wall of the water tank (281). The plurality of heat sinks (512) are evenly distributed on the surface of the cooling plate (511). The liquid outlet end of the pump (282) passes through the plurality of heat sinks (512) in a serpentine manner.

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