A large-size briquette cleaning device and method

Abstract

The application provides a large-size briquetting coal cleaning device and method, which comprises a transfer unit and a lifting unit. The transfer unit comprises a track and a track vehicle slidingly arranged on the track. The track vehicle is provided with a cavity groove for placing a cavity. The lifting unit comprises a structure table supported above the track by a lifting device. A square window is formed on the structure table corresponding to the position of the track. The size of the square window matches the size of the cavity. The structure table is provided with a cutting unit and a positioning unit. The cutting unit comprises a rotating body and a face milling cutter. The face milling cutter is arranged below the square window. The rotating body can drive the face milling cutter to rotate. The positioning unit is connected with the face milling cutter and can drive the face milling cutter to move in the horizontal direction or the vertical direction in the square window. The application can effectively reduce the labor intensity of cleaning large-size briquetting coal, greatly improve the cleaning speed and reduce the cleaning time.

Description

Technical Field

[0001] This invention relates to the field of briquette production technology, and in particular to a large-size compressed briquette cleaning device and method. Background Technology

[0002] Research on permeability enhancement technologies such as hydraulic fracturing, hydraulic slotting, hydraulic perforation, and blasting fracturing in coal seams faces challenges due to limited on-site monitoring methods in coal mines, difficulty in obtaining effective data, the need for further theoretical refinement, and the need to verify constitutive models and simulation results in numerical simulations. Physical simulation experiments are an effective research method. To effectively explore the coupled evolution of pressure, stress, deformation, and temperature fields during fluid seepage within the coal seam under pressure and depressurization conditions during permeability enhancement, briquette specimens are typically fabricated and various sensors are installed inside them. While small-sized briquette specimens are convenient to prepare, the number of sensors that can be installed and the permeability enhancement measures that can be adopted are limited. Therefore, the preparation of large-sized briquette specimens is fundamental to research on coal seam permeability enhancement technologies. Currently, large-size coal briquette specimens are all prepared by compression molding. This involves using a specific cavity and a hydraulic servo device to press coal powder inside the cavity into coal specimens through high stress loading in layers. Sensors are also deployed in layers during the pressing process, and coal seam permeability enhancement experiments are then conducted. The changes in various physical quantities inside the coal briquette specimens are monitored through the sensors.

[0003] The above experiments all have corresponding equipment available, so the overall workload for the experimenters is not large. However, after each experiment, the briquettes inside the chamber need to be cleaned. Since there is no suitable cleaning device for rapid cleaning, this work can only be done manually, making the entire process time-consuming and labor-intensive. Because the briquettes are formed under high stress, they have a certain strength, so ordinary small shovels and spades are insufficient. Tools such as awls and hammers are used, with the hammer striking the awl to create small-scale damage and gradually clean the briquettes. Large briquette specimens are generally made from hundreds of kilograms of coal powder, making the cleaning work extremely tedious and time-consuming. For example, cleaning a 500mm cube briquette takes at least 5 hours with two people working together, and the process is extremely physically demanding. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention aims to provide a large-size compressed coal cleaning device and method to reduce the labor intensity of cleaning large-size coal, increase the cleaning speed, and shorten the cleaning time.

[0005] To achieve the above objectives, this invention proposes a large-size compressed coal cleaning device, comprising a transfer unit and a lifting unit. The transfer unit includes a track and a railcar slidably mounted on the track. The railcar has a cavity slot for placing a cavity. The lifting unit includes a structural platform, which is supported above the track by a lifting device. A square window is provided on the structural platform at a position corresponding to the track. The size of the square window matches the size of the cavity. A cutting unit and a positioning unit are arranged on the structural platform. The cutting unit includes a rotating body and a face milling cutter. The face milling cutter is located below the square window. The rotating body can drive the face milling cutter to rotate. The positioning unit is connected to the face milling cutter and can drive the face milling cutter to move laterally or longitudinally within the square window.

[0006] In the above scheme: the rotating body includes a rotary head, which has internal retaining teeth that can grip and rotate a face milling cutter located below it. A protective tube is connected to the lower part of the rotary head, and the protective tube is fitted over the face milling cutter with a gap. The rotary head rotates internally but not externally. The rotating body also includes an external pipeline that provides power to the rotary head via a power supply box.

[0007] In the above scheme: the positioning unit includes a driving device A and a driving device B. The driving device B includes a longitudinally arranged guide rail B, a transversely arranged hydraulic drive B, and a slide rail body B. One end of the guide rail B is slidably placed in the slide rail body B. The driving end of the hydraulic drive B is connected to the guide rail B and can drive the guide rail B to move laterally along the slide rail body B. The driving device A includes a transversely arranged guide rail A, a longitudinally arranged hydraulic drive A, and a slide rail body A. One end of the guide rail A is slidably placed in the slide rail body A. The driving end of the hydraulic drive A is connected to the guide rail A and can drive the guide rail A to move longitudinally along the slide rail body A. The guide rail A and guide rail B are distributed on two adjacent sides of the square window, and the guide rail A and guide rail B are staggered vertically. Both guide rail A and guide rail B have a first rail groove along their length direction. The protective tube is longitudinally inserted into the upper and lower first rail grooves. The protective tube prevents the face milling cutter from contacting guide rails A and B. When guide rail B moves laterally, it can drive the protective tube to move laterally, thereby driving the rotary head and the face milling cutter to move laterally. When guide rail A moves longitudinally, it can drive the protective tube to move longitudinally, thereby driving the rotary head and the face milling cutter to move longitudinally, thus enabling the face milling cutter to perform longitudinal and transverse milling.

[0008] In the above scheme: a free-rotating body is rotatably mounted on one corner of the structural platform near the square window. A secondary telescopic arm is connected to the free-rotating body. The other end of the secondary telescopic arm is movably sleeved on the protective tube and supported at the bottom end of the guide rail A. The secondary telescopic arm provides support and can extend and retract to follow the movement of the protective tube.

[0009] In the above scheme: an inverted L-shaped suspension platform is provided on the structural platform, and a second rail groove extending laterally is provided on the inverted L-shaped suspension platform. A T-shaped suspension rod is provided at the end of the guide rail B away from the hydraulic drive B, and the top end of the T-shaped suspension rod is slidably connected to the second rail groove through a pulley. The L-shaped suspension platform and the T-shaped suspension rod together serve to suspend and support the guide rail B.

[0010] In the above scheme: the guide rail B is supported at the bottom of the rotary device, and a groove is provided on the top surface of the guide rail B along its length direction. The bottom of the rotary device is slidably connected to the groove through a pulley, which facilitates the movement of the entire rotating unit along the groove of the guide rail B.

[0011] In the above scheme: both slide rail A and slide rail B have a third track groove along their length. Corresponding ends of guide rails A and B are slidably connected to the corresponding third track grooves via pulleys. The cooperation between the pulleys and the third track grooves reduces the resistance when the guide rails move inside the slide rail bodies and provides orientation for the movement of the guide rails.

[0012] In the above scheme: the track is a longitudinally extending double track, and several pin holes are provided in the middle of the two tracks. The pin holes are evenly arranged in the longitudinal direction. The track vehicle is a flatbed vehicle. The cavity groove is opened in the middle of the top surface of the track vehicle. The front and rear ends of the track vehicle are also provided with through holes corresponding to the middle positions of the two tracks. The through holes are equipped with fixing pins. The fixing pins can pass through the through holes and be inserted into the pin holes to fix the track vehicle on the track, which is convenient to operate.

[0013] This invention also proposes a method for cleaning large-size compressed coal briquettes. Based on the above-mentioned large-size compressed coal cleaning device, the cleaning method includes the following steps:

[0014] S1. Cavity transfer and fixation;

[0015] After the experiment was completed, the cavity containing the coal briquettes and sensors was transferred to the cavity slot of the railcar using hoisting equipment and pushed directly below the square window of the structural platform. Then the railcar was fixed on the track.

[0016] S2, the face milling cutter enters the briquettes;

[0017] Adjust the rotating unit (the movement of the rotating unit can be manually controlled or software controlled) to a position close to one corner of the square window, start the rotating unit, and adjust the height of the structural table to allow the face milling cutter to enter the briquette.

[0018] S3, face milling cutter moving to mill coal briquettes;

[0019] First, mill the four sides of the briquettes, then mill them in a grid pattern to divide them into several blocks; or directly mill all the briquettes to the designed milling depth into powder.

[0020] S4. Stop milling and clean the briquettes;

[0021] Turn off the rotating unit, stop milling, and raise the control structure to remove the milled briquettes from the cavity; small cube briquettes can be cleaned with a small shovel, and coal dust can be sucked out with a vacuum cleaner.

[0022] S5, continue to clean the coal briquettes in layers;

[0023] The control structure platform descends, and the briquettes and their internal sensors are cleaned layer by layer according to the above steps until the cleaning is completed. Layer cleaning is related to the arrangement of the sensors (the sensors are arranged in layers). That is, the briquettes need to be cleaned in layers according to the position of each sensor. Each layer cleaning needs to meet the following requirements: the face milling cutter and the top surface of the corresponding layer sensor should have a sufficient safety distance.

[0024] S6, Transfer cavity;

[0025] After the coal briquettes and sensors inside the cavity are cleaned, the railcar is released from its anchors and pushed to move the cavity away from the structural platform for hoisting.

[0026] The beneficial effects of this invention are:

[0027] 1. The device has a simple structure, is easy to manufacture, and can effectively reduce the labor intensity of cleaning large-sized briquettes, significantly increase the cleaning speed, and reduce the cleaning time; 2. The device is easy to use. By controlling the lifting of the structural platform, the milling cutter can be controlled to advance and retract, making it easy to learn and master. It also has high flexibility and can be adjusted according to actual needs; 3. The briquette cleaning method is ingenious. The briquettes are milled using a grid-like cutting method, dividing them into several blocks so that they can be cleaned and shoveled out with a regular shovel. Attached Figure Description

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of a large-size compressed coal cleaning device.

[0030] Figure 2 This is a schematic diagram of the cavity structure.

[0031] Figure 3 This is a schematic diagram of milling grooves on briquettes.

[0032] Figure 4 This is a schematic diagram of a face milling cutter.

[0033] Figure 5 This is an enlarged view of the protective tube.

[0034] Figure 6 This is an enlarged view of the groove on guide rail B.

[0035] Figure 7 This is an enlarged view of the T-shaped suspension rod.

[0036] Figure 8 This is an enlarged view of the sliding connection between slide rail B and guide rail.

[0037] Figure 9 yes Figure 2 A sectional view. Detailed Implementation

[0038] like Figure 1 As shown in Figure 9, a large-size compressed coal cleaning device mainly consists of a transfer unit, a lifting unit, a cutting unit, and a positioning unit.

[0039] The transfer unit includes a track 2 and a railcar 3 that slides on the track 2. The railcar 3 is equipped with a cavity trough 26 for placing the cavity 1 (which contains briquettes 27). The lifting unit includes a structural platform 4, which is supported above the track 2 by a lifting device 5 consisting of four hydraulic columns distributed on both sides of the track 2. A square window 6 is provided on the structural platform 4 at a position corresponding to the track 2. The size of the square window 6 matches the size of the cavity 1. Generally, the side length of the square window 6 should be at least 100mm larger than the side length of the briquettes 27 inside the cavity 1.

[0040] A cutting unit and a positioning unit are arranged on the structural platform 4. The cutting unit includes a rotating body and a face milling cutter 7. The face milling cutter 7 is located below the square window 6. The rotating body can drive the face milling cutter 7 to rotate. The positioning unit is connected to the face milling cutter 7 and can drive the face milling cutter 7 to move horizontally or vertically within the square window 6.

[0041] The face milling cutter 7 consists of a shank with a length of 600-1000mm, a cutter body with a length of 100mm, and a cutting edge. The shank diameter is 10-15mm; the cutting edge has a milling diameter of 15-20mm; the end of the cutter body is tapered and equipped with a cutting edge to facilitate the face milling cutter 7 entering the briquette 27.

[0042] Ideally, the rotating body includes a rotary unit 8, which has internal retaining teeth that grip and rotate a face cutter 7 located below it. A protective tube 9 is connected to the lower part of the rotary unit 8, and the protective tube 9 is fitted over the face cutter 7 with a gap. The rotary unit 8 rotates internally but not externally. The rotating body also includes an external pipeline that provides power to the rotary unit 8 via a power supply box.

[0043] Ideally, the positioning unit includes drive unit A and drive unit B.

[0044] The drive device B includes a longitudinally arranged guide rail B10, a transversely arranged hydraulic drive B11, and a slide rail body B12. One end of the guide rail B10 is slidably placed in the slide rail body B12. The drive end of the hydraulic drive B11 is connected to the guide rail B10 and can drive the guide rail B10 to move laterally along the slide rail body B12.

[0045] The drive device A includes a horizontally arranged guide rail A13, a longitudinally arranged hydraulic drive A14, and a slide rail body A15. One end of the guide rail A13 is slidably placed in the slide rail body A15. The drive end of the hydraulic drive A14 is connected to the guide rail A13 and can drive the guide rail A13 to move longitudinally along the slide rail body A15.

[0046] Guide rails A13 and B10 are distributed on two adjacent sides of the square window 6, and are staggered vertically. Both guide rails A13 and B10 have a first groove 16 along their length. A protective tube 9 is longitudinally inserted into the two first grooves 16. The protective tube 9 prevents the face milling cutter 7 from contacting guide rails A13 and B10. When guide rail B10 moves laterally, it drives the protective tube 9 to move laterally, thereby driving the rotary head 8 and the face milling cutter 7 to move laterally. When guide rail A13 moves longitudinally, it drives the protective tube 9 to move longitudinally, thereby driving the rotary head 8 and the face milling cutter 7 to move longitudinally, thus enabling the face milling cutter 7 to perform longitudinal and transverse milling.

[0047] The plane that the rotating unit can move is the plane covered by the first rail groove 16 of the two mutually perpendicular guide rails. This plane should be smaller than the area of ​​the square window 7. Therefore, the length of the first rail groove 16 should be smaller than the side length of the square window 7 (110 mm), that is, smaller than the side length of the briquette 27 in the cavity 1 (10 mm).

[0048] Ideally, a free-rotating body 17 is rotatably mounted on one corner of the structural platform 4 near the square window 6. A secondary telescopic arm 18 is connected to the free-rotating body 17. The other end of the secondary telescopic arm 18 is movably sleeved on the protective tube 9 and supported at the bottom of the guide rail A13. The secondary telescopic arm 18 provides support and can telescopically move to follow the movement of the protective tube 9.

[0049] Ideally, the structural platform 4 is equipped with an inverted L-shaped suspension platform 19, which has a second rail groove extending laterally. A T-shaped suspension rod 21 is mounted upwards on the end of the guide rail B10 furthest from the hydraulic drive B11. The top of the T-shaped suspension rod 21 is slidably connected to the second rail groove via a pulley. The L-shaped suspension platform 19 and the T-shaped suspension rod 21 together suspend and support the guide rail B10.

[0050] Ideally, the guide rail B10 is supported at the bottom of the rotary unit 8, and a groove 22 is provided on the top surface of the guide rail B10 along its length. The bottom of the rotary unit 8 is slidably connected to the groove 22 via a pulley, which facilitates the movement of the entire rotating unit along the groove 22 of the guide rail B10.

[0051] Ideally, both slide rail bodies A15 and B12 have a third rail groove 23 along their length, and the corresponding ends of guide rails A13 and B10 are slidably connected to the corresponding third rail groove 23 via pulleys. The cooperation between the pulleys and the third rail groove 23 can reduce the resistance when the guide rail moves inside the slide rail body and provide orientation for the movement of the guide rail.

[0052] Ideally, the track 2 is a longitudinally extending double track, with several pin holes 24 set in the middle of the two tracks 2. The pin holes 24 are evenly arranged in the longitudinal direction, and the distance between adjacent pin holes 24 is 100-200mm. The track car 3 is a flatbed car, and the cavity groove 26 is opened in the middle of the top surface of the track car 3. The front and rear ends of the track car 3 are also provided with through holes 20 corresponding to the middle positions of the two tracks 2. The through holes 20 are equipped with fixing pins 25. The fixing pins 25 can pass through the through holes 20 and be inserted into the pin holes 24 to fix the track car 3 on the track 2, which is convenient to operate.

[0053] A method for cleaning large-size compressed coal briquettes, based on the aforementioned large-size compressed coal briquette cleaning device, includes the following steps:

[0054] S1. Cavity transfer and fixation;

[0055] After the experiment, the cavity 1 containing the briquettes 27 and sensors 28 is transferred to the cavity slot of the railcar 3 using hoisting equipment, and then pushed directly below the square window 6 of the structural platform 4. The railcar 3 is then fixed to the rail 2 using fixing pins 25. If the height of the structural platform 4 is insufficient to move the cavity 1 directly below it, the structural platform 4 can be raised first.

[0056] S2, the face milling cutter enters the briquettes;

[0057] Adjust the rotating unit (the movement of the rotating unit can be manually controlled or software controlled) to a position close to one corner of the square window 6 (initial position), start the rotating unit, and adjust the height of the structural platform 4 so that the face milling cutter 7 enters the briquette 27, the depth of which is generally 5-10cm, depending on the position of the sensor 28 arranged inside the briquette 27.

[0058] S3, face milling cutter moving to mill coal briquettes;

[0059] First, mill the four sides of briquette 27. Then, mill briquette 27 in a grid pattern to divide it into several squares with a side length of about 50-100mm, so that it can be cleaned with a regular shovel; or directly mill all of briquette 27 to the designed milling depth into powder.

[0060] S4. Stop milling and clean the briquettes;

[0061] When the rotating unit is turned off, the control structure 4 is raised. The experimenters use tools such as small shovels to remove the milled coal briquettes 27 from the cavity 1. The small square coal briquettes 27 can be cleaned with small shovels, and the coal dust can be sucked out with a vacuum cleaner.

[0062] S5, continue to clean the coal briquettes in layers;

[0063] The control structure platform 4 descends and cleans the briquettes 27 and their internal sensors 28 layer by layer according to the above steps until cleaning is completed. Layered cleaning is related to the arrangement of the sensors 28 (the sensors 28 are arranged in layers), that is, the briquettes 27 need to be cleaned layer by layer according to the position of each sensor 28. Each layer of cleaning needs to meet the following requirement: the face milling cutter and the top surface of the corresponding layer sensor 28 must maintain a sufficient safety distance.

[0064] Taking a cavity 1 with dimensions of 800×800×800mm and internal briquettes 27 with dimensions of 500×500×500mm as an example, the following explanation is provided. The first layer of sensors is 100mm away from the top of the briquettes 27. Assuming the sensor 28 has a diameter of 5mm and its center is collinear with the center of the measuring hole 29, the distance from the top of the sensor 28 to the top surface of the briquettes 27 is 95mm. To ensure safety, a safety distance of not less than 5mm is provided. The depth of the face milling cutter 7 into the briquettes 27 can be set to 90mm in one go. After the briquettes 27 are divided into grids or completely cut according to the corresponding steps, the small pieces of briquettes 27 or coal powder scraped off are cleaned up using a small shovel or a dust collection device. Then, the first layer of sensors is gradually removed. The second layer of sensors is 150mm away from the first layer. Therefore, the top of the second layer of sensors is 150mm away from the top surface of the remaining briquettes 27 after the first cleaning. A 5mm safety distance is left. This means that the face milling cutter 7 needs to cut briquettes 27 to a depth of 145mm. If the maximum cutting depth of the face milling cutter 7 is 100mm, it can be cut in two stages, one to a depth of 75mm and the other to a depth of 70mm. This process is repeated until the third layer of sensors is removed. The remaining briquettes 27 with a depth of about 110mm can still be cut in two stages or cut to a depth of 100mm in one go, but the safety distance between the inner wall of the cavity 1 and the face milling cutter 7 must be no less than 5mm.

[0065] In practical applications, if the hardness coefficient of the briquettes 27 is large and the cutting depth of the face milling cutter 7 is limited in one pass, the cutting depth of the face milling cutter 7 can be reduced each time.

[0066] S6, Transfer cavity;

[0067] After the briquettes 27 and sensors 28 inside cavity 1 are cleaned, remove the fixing pins 25 to release the railcar 3, push the railcar 3 so that cavity 1 can be lifted off the structural platform 4.

Claims

1. A method for cleaning large-size compressed coal briquettes, which uses a large-size compressed coal cleaning device, the large-size compressed coal cleaning device includes a transfer unit and a lifting unit, the transfer unit includes a track (2) and a railcar (3) slidably set on the track (2), the railcar (3) is provided with a cavity slot (26) for placing a cavity (1), the lifting unit includes a structural platform (4), the structural platform (4) is supported above the track (2) by a lifting device (5), a square window (6) is opened on the structural platform (4) at the position corresponding to the track (2), the size of the square window (6) matches the size of the cavity (1), a cutting unit and a positioning unit are arranged on the structural platform (4), the cutting unit includes a rotating body and a face milling cutter (7), the face milling cutter (7) is located below the square window (6), the rotating body can drive the face milling cutter (7) to rotate, the positioning unit is connected to the face milling cutter (7) and can drive the face milling cutter (7) to move horizontally or vertically within the square window (6); The cleaning method includes the following steps: S1. Cavity transfer and fixation; After the experiment was completed, the cavity (1) containing the coal briquettes (27) and sensors (28) was transferred to the cavity slot of the railcar (3) using hoisting equipment and pushed directly below the square window (6) of the structural platform (4). Then the railcar (3) was fixed on the rail (2). S2, the face milling cutter enters the briquettes; Adjust the rotating unit to a position close to one corner of the square window (6), start the rotating unit, and adjust the height of the structural table (4) so ​​that the face milling cutter (7) enters the briquette (27). S3, face milling cutter moving to mill coal briquettes; First, the four sides of the briquette (27) are milled, and then the briquette (27) is milled in a grid-like cutting manner to divide the briquette (27) into several squares; S4. Stop milling and clean the briquettes; The rotating unit is turned off, the control structure (4) is raised, and the milled coal briquettes (27) in the cavity (1) are removed; S5, continue to clean the coal briquettes in layers; The control structure platform (4) is lowered, and the briquettes (27) and their internal sensors (28) are cleaned layer by layer according to the above steps. Each layer of cleaning needs to meet the following requirements: a safe distance is left between the face milling cutter and the top surface of the corresponding layer sensor (28). After the briquettes (27) are divided into grids or completely cut, the briquettes (27) or coal powder that have been shoveled off are cleaned up using a small shovel or dust collection device. Then the sensors (28) of that layer are gradually removed. This cycle is repeated until the cleaning is completed. S6, Transfer cavity; After the briquettes (27) and sensors (28) inside the cavity (1) are cleaned, the railcar (3) is released from its fixation and the railcar (3) is pushed so that the cavity (1) leaves the structural platform (4) for hoisting.

2. The method for cleaning large-size compressed coal briquettes according to claim 1, characterized in that: The rotating body includes a rotary device (8), which has a locking tooth inside. The locking tooth can hold the face cutter (7) located below it and drive it to rotate. The lower part of the rotary device (8) is connected to a protective tube (9), which is gapped around the face cutter (7).

3. The method for cleaning large-size compressed coal briquettes according to claim 2, characterized in that: The positioning unit includes a driving device A and a driving device B; The drive device B includes a longitudinally arranged guide rail B (10), a transversely arranged hydraulic drive B (11), and a slide rail body B (12). One end of the guide rail B (10) is slidably placed in the slide rail body B (12). The drive end of the hydraulic drive B (11) is connected to the guide rail B (10) and can drive the guide rail B (10) to move laterally along the slide rail body B (12). The driving device A includes a horizontally arranged guide rail A (13), a longitudinally arranged hydraulic drive A (14), and a slide rail body A (15). One end of the guide rail A (13) is slidably placed in the slide rail body A (15). The driving end of the hydraulic drive A (14) is connected to the guide rail A (13) and can drive the guide rail A (13) to move longitudinally along the slide rail body A (15). The guide rail A (13) and the guide rail B (10) are distributed on two adjacent sides of the square window (6), and the guide rail A (13) and the guide rail B (10) are staggered vertically. The guide rail A (13) and the guide rail B (10) are provided with a first rail groove (16) along their length direction. The protective tube (9) is longitudinally inserted into the upper and lower first rail grooves (16).

4. The method for cleaning large-size compressed coal briquettes according to claim 3, characterized in that: A free-rotating body (17) is rotatably installed on one corner of the structural platform (4) near the square window (6). A secondary telescopic arm (18) is connected to the free-rotating body (17). The other end of the secondary telescopic arm (18) is movably sleeved on the protective tube (9) and supported on the bottom end of the guide rail A (13).

5. The method for cleaning large-size compressed coal briquettes according to claim 3, characterized in that: The structure platform (4) is provided with an inverted L-shaped suspension platform (19), and the inverted L-shaped suspension platform (19) is provided with a second rail groove extending laterally. The end of the guide rail B (10) away from the hydraulic drive B (11) is provided with a T-shaped suspension rod (21) facing upward. The top end of the T-shaped suspension rod (21) is slidably connected to the second rail groove through a pulley.

6. The method for cleaning large-size compressed coal briquettes according to claim 5, characterized in that: The guide rail B (10) is supported at the bottom of the rotary device (8). A groove (22) is provided on the top surface of the guide rail B (10) along its length direction. The bottom of the rotary device (8) is slidably connected to the groove (22) through a pulley.

7. The method for cleaning large-size compressed coal briquettes according to claim 3, characterized in that: Both slide rail body A (15) and slide rail body B (12) are provided with a third track groove (23) along their length direction. The corresponding ends of guide rail A (13) and guide rail B (10) are slidably connected to the corresponding third track groove (23) through pulleys.

8. The method for cleaning large-size compressed coal briquettes according to claim 3, characterized in that: The track (2) is a longitudinally extending double track. Several pin holes (24) are provided in the middle of the two tracks (2). The pin holes (24) are evenly arranged in the longitudinal direction. The track car (3) is a flatbed car. The cavity groove (26) is opened in the middle of the top surface of the track car (3). The front and rear ends of the track car (3) are also provided with through holes (20) corresponding to the middle positions of the two tracks (2). The through holes (20) are equipped with fixing pins (25). The fixing pins (25) can pass through the through holes (20) and be inserted into the pin holes (24) to fix the track car (3) on the track (2).

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