A coal seam roof fissure grouting plugging device

Abstract

The present application relates to coal mining grouting plugging technical field, concretely is a kind of coal seam roof fissure grouting plugging device, comprising: installation bottom plate, the upper surface of installation bottom plate is fixedly installed with first fixed plate, the upper surface of installation bottom plate is provided with lifting mechanism and transport mechanism, lifting mechanism includes second fixed plate fixedly installed on the upper surface of installation bottom plate, the upper surface of second fixed plate is fixedly installed with a pair of guide plates, a pair of guide plates is internally provided with a pair of guide grooves, a pair of guide rings shafts are slidably connected in the inside of a pair of guide grooves, the present application is set through the setting of feeding mechanism, support plate plays fixed support effect to material box, feeding port is convenient for adding grouting material, first servo motor drives first shaft, connecting rod and connecting shaft to rotate, in turn drive stirring vane to carry out uniform stirring to grouting material in material box, after stirring, material is transported to storage tank by guide pipe, realizes feeding and stirring integration.

Description

Technical Field

[0001] This invention relates to the field of grouting and sealing technology in coal mining, specifically to a grouting and sealing device for cracks in the roof of a coal seam. Background Technology

[0002] During underground coal mining operations, the coal seam roof is easily affected by multiple factors such as geological tectonic movements and mining disturbances, resulting in fissures of varying sizes and orientations. The presence of these fissures can severely damage the integrity and stability of the coal seam roof, potentially leading to safety accidents such as roof subsidence and collapse, threatening the lives of underground workers and the normal operation of mining equipment. It can also cause derivative problems such as underground gas leaks and groundwater seepage, increasing safety hazards and production costs in mining operations. Therefore, effectively grouting and sealing fissures in the coal seam roof is a crucial step in ensuring safe production in coal mines.

[0003] The existing coal seam roof fissure grouting and sealing devices have poor overall installation and positioning flexibility, lacking convenient height adjustment and position fine-tuning mechanisms. Due to the significant differences in the distribution height and orientation of coal seam roof fissures, it is difficult to quickly adjust the grouting head to a position that precisely aligns with the fissure, often requiring repeated manual adjustments. This not only increases the labor intensity of operators but also reduces the efficiency of grouting and sealing. Insufficient adjustment precision can easily lead to waste of grouting materials and poor sealing effects. The storage, transportation, and connection between grouting materials and grouting operations are not smooth enough. Some devices lack effective grouting material mixing mechanisms, which can easily lead to sedimentation and clumping of grouting materials, affecting grouting fluidity and sealing density. At the same time, the angle adjustment and advancement control of the grouting head are not flexible enough to adapt to roof fissures with different inclination angles and depths. For fissures that are highly concealed or in special locations, it is impossible to achieve all-round, dead-angle-free grouting and sealing, resulting in incomplete fissure sealing and a high risk of secondary leakage and roof instability in the later stages. Summary of the Invention

[0004] The purpose of this invention is to provide a coal seam roof fissure grouting and sealing device. The aim is to design a sealing device with a reasonable structure, flexible adjustment, good mechanism coordination, and the ability to achieve precise positioning and angle adjustment of the grouting head, uniform delivery and mixing of grouting materials, reliable operation, and adaptability to complex underground working environments, so as to solve many defects of the existing technology.

[0005] To achieve the above effects, the technical solution adopted by the present invention is as follows: a coal seam roof fissure grouting and sealing device, comprising: a mounting base plate, a first fixing plate fixedly mounted on the upper surface of the mounting base plate, a lifting mechanism and a transport mechanism provided on the upper surface of the mounting base plate, the lifting mechanism including a second fixing plate fixedly mounted on the upper surface of the mounting base plate, a pair of guide plates fixedly mounted on the upper surface of the second fixing plate, a pair of guide grooves formed inside the pair of guide plates, a pair of guide ring shafts slidably connected inside each pair of guide grooves, a first connecting plate movably mounted on the outer surface of the pair of guide ring shafts, and a first connecting plate movably mounted on the outer surface of the second fixing plate. A mounting shaft is movably connected to the side, and a second connecting plate is fixedly mounted on the outer surface of the mounting shaft. A movable pin is movably connected between the first and second connecting plates. A movable frame is fixedly mounted at one end of the guide ring shaft. A fixed frame is fixedly mounted on the upper surface of the mounting base plate. A first mounting frame is fixedly connected to the upper surface of the mounting base plate. A drive motor is fixedly mounted on the upper surface of the first mounting frame. A threaded rod is fixedly mounted at the output end of the drive motor. The first mounting plate and the second connecting plate are movably connected to the first mounting plate on the uppermost side via the movable pin. A mounting box is fixedly mounted on the upper surface of the first mounting plate. A transport mechanism is provided on the upper surface of the first fixed plate. The transport mechanism includes a storage box fixedly connected to the upper surface of the first fixed plate. A transport pipe is fixedly installed on the upper surface of the storage box. A pump is fixedly installed on the upper surface of the storage box. A telescopic hose is fixedly connected to one side of the pump.

[0006] Preferably, one side of the fixed frame is rotatably connected to one end of the threaded rod, the outer surface of the threaded rod is threadedly connected to the inside of the movable frame, the top of the uppermost first connecting plate is slidably connected to the inside of the first mounting plate through a movable pin two, the top of the uppermost second connecting plate is rotatably connected to the inside of the first mounting plate through a movable pin three, the bottom of the transport pipe extends into the inside of the storage box, and the output end of the transport pipe is connected to the input end of the pump.

[0007] Preferably, a pushing mechanism is provided on one side of the mounting box. The pushing mechanism includes sliding grooves formed on the left and right sides inside the mounting box. A first cylinder is fixedly installed on one side of the mounting box. A first air rod is fixedly installed at the output end of the first air cylinder. A movable plate is fixedly installed at the output end of the first air rod.

[0008] Preferably, the upper surface of the first fixed plate is provided with a feeding mechanism, which includes a pair of support plates fixedly installed on the upper surface of the first fixed plate. A material box is fixedly installed on one side of the pair of support plates. A second mounting bracket is fixedly installed on one side of the upper surface of the material box. A first servo motor is fixedly installed on the upper surface of the second mounting bracket. A first rotating shaft is fixedly installed at the output end of the first servo motor. A connecting rod is fixedly installed at the bottom end of the first rotating shaft. A pair of connecting shafts are movably connected to the left and right sides of the lower surface of the connecting rod. A plurality of stirring blades are fixedly installed on the outer wall of the pair of connecting shafts. A feed inlet is fixedly installed on one side wall of the material box. A guide tube is fixedly installed on the other side wall of the material box, and the other side of the guide tube extends into the interior of the storage box.

[0009] Preferably, the upper surface of the movable plate is provided with an adjustment mechanism. The adjustment mechanism includes a protective box fixedly installed on the upper surface of the movable plate. A pair of first fixing blocks are fixedly installed on the front and rear sides inside the protective box. A pair of rotating rods are movably connected to the left and right sides of the first fixing blocks. A first fixing shaft is movably connected inside the first fixing blocks and the rotating rods. A first fixing bolt is movably connected inside the other side of the rotating rod.

[0010] Preferably, a pair of second fixing blocks are fixedly connected to the upper surface of the protective box, a second servo motor is fixedly installed on one side of the protective box, a second rotating shaft is fixedly installed at the output end of the second servo motor, a semi-circular gear is fixedly installed on the outer surface of the second rotating shaft, a meshing gear is meshed on one side of the semi-circular gear, a pair of movable shafts are movably connected on one side of the meshing gear, a lifting plate is movably connected on one side of the meshing gear, and the movable shafts pass through the interior of the lifting plate and the meshing gear.

[0011] Preferably, a second mounting plate is fixedly installed on the left and right sides of the lifting plate, a first movable block is movably connected to one side of the second mounting plate, a second cylinder is fixedly installed on one side of the first movable block, a second air rod is fixedly installed at the output end of the second cylinder, a second movable block is fixedly installed at the output end of the second air rod, a third mounting plate is movably connected to the left and right sides of the second movable block, an adjusting rod is fixedly installed on the lower surface of the third mounting plate, an mounting block is fixedly installed on the upper surface of the adjusting rod, and a grouting head is installed on one side of the mounting block.

[0012] Preferably, one side of the adjusting rod is connected to the left and right sides of the lifting plate, and one side of the grouting head is connected to the output end of the telescopic hose.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: With the lifting mechanism in place, the drive motor rotates the threaded rod, which, together with the movable frame and guide ring shaft, slides within the guide groove of the guide plate, enabling the smooth lifting and lowering of the first mounting plate and mounting box. The movable pin allows the first connecting plate to be installed with the second connecting plate. With the transport mechanism in place, the storage box is used to store grouting materials, and the pump provides the transport power, delivering the grouting materials in the storage box to the grouting head through the transport pipe and the telescopic hose. The transport pipe extends into the storage box to ensure sufficient delivery of grouting materials and reduce material residue. The telescopic hose can be adjusted to match the position of the grouting head to avoid damage to the transport pipeline.

[0014] With the feeding mechanism in place, the support plate provides fixed support for the material box, and the inlet facilitates the addition of grouting material. The first servo motor drives the first rotating shaft, connecting rod, and connecting shaft to rotate, thereby driving the mixing blades to uniformly mix the grouting material in the material box. The mixed material is then transported to the storage box through the guide pipe, achieving integrated feeding and mixing. With the push mechanism in place, the first cylinder drives the first air rod to extend and retract, thereby pushing the moving plate to slide smoothly in the groove of the mounting box, driving the adjustment mechanism and grouting head to move horizontally, which can quickly push the grouting head to the front of the crack. With the adjustment mechanism in place, the second servo motor drives the second rotating shaft and semi-circular gear to rotate, which, in conjunction with the meshing gear, drives the lifting plate to adjust up and down. The rotating rod, in conjunction with the first fixed shaft, can assist in adjusting and fixing the angle. The second cylinder drives the second air rod to extend and retract, pushing the third mounting plate and adjusting rod for fine adjustment, thereby adjusting the angle of the grouting head. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the lifting mechanism structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the transmission structure of the lifting mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram of the feeding mechanism structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the adjustment mechanism structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the transmission structure of the adjustment mechanism in an embodiment of the present invention.

[0017] In the diagram, 1. Mounting base plate; 2. First fixing plate; 3. Storage box; 4. Transport pipe; 5. Pump; 6. Telescopic hose; 7. Second fixing plate; 8. Guide plate; 9. Guide groove; 10. Guide ring shaft; 11. First connecting plate; 12. Mounting shaft; 13. Second connecting plate; 14. Movable pin shaft one; 15. Moving frame; 16. Fixing frame; 17. First mounting frame; 18. Drive motor; 19. Threaded rod; 20. First mounting plate; 21. Mounting box; 22. Slide groove; 23. First cylinder; 24. First air rod; 25. Moving plate; 26. Support plate; 27. Material box; 28. Second mounting frame; 29. ​​First servo motor 30. First rotating shaft; 31. Connecting rod; 32. Connecting shaft; 33. Stirring blade; 34. Feed inlet; 35. Guide pipe; 36. Protective box; 37. First fixed block; 38. Rotating rod; 39. First fixed shaft; 40. First fixing bolt; 41. Second fixed block; 42. Second servo motor; 43. Second rotating shaft; 44. Semi-circular gear; 45. Meshing gear; 46. Movable shaft; 47. Lifting plate; 48. Second mounting plate; 49. First movable block; 50. Second cylinder; 51. Second air rod; 52. Second movable block; 53. Third mounting plate; 54. Adjusting rod; 55. Mounting block; 56. Grouting head. Detailed Implementation

[0018] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1:

[0020] Please see Figures 1 to 6As shown, this embodiment discloses a coal seam roof fissure grouting and sealing device, comprising: a mounting base plate 1, a first fixing plate 2 fixedly mounted on the upper surface of the mounting base plate 1, a lifting mechanism and a transport mechanism provided on the upper surface of the mounting base plate 1, the lifting mechanism including a second fixing plate 7, a guide plate 8, a guide ring shaft 10, a first connecting plate 11, a mounting shaft 12, a second connecting plate 13, a movable pin shaft 14, a moving frame 15, a fixed frame 16, a first mounting frame 17, a drive motor 18, a threaded rod 19, a first mounting plate 20 and a mounting box 21, the second fixing plate 7 fixedly mounted on the upper surface of the mounting base plate 1, a pair of guide plates 8 fixedly mounted on the upper surface of the second fixing plate 7, each of the pair of guide plates 8 having a guide groove 9 inside, a pair of guide ring shafts 10 slidably connected inside each pair of guide grooves 9, the first connecting plate 11 movably mounted on the outer surface of the pair of guide ring shafts 10, the mounting shaft 12 movably connected to one side of the second fixing plate 7, and the second connecting plate 13 movably mounted on the outer surface of the mounting shaft 12. A movable pin 14 is movably connected between the first connecting plate 11 and the second connecting plate 13, and the two are in a cross state. A movable frame 15 is fixedly installed at one end of the guide ring shaft 10. A fixed frame 16 is fixedly installed on the upper surface of the mounting base plate 1. A first mounting frame 17 is fixedly connected to the upper surface of the mounting base plate 1. A drive motor 18 is fixedly installed on the upper surface of the first mounting frame 17. A threaded rod 19 is fixedly installed at the output end of the drive motor 18. A first mounting plate 20 is movably connected to the uppermost side of the first connecting plate 11 and the second connecting plate 13 through a movable pin 2. A mounting box 21 is fixedly installed on the upper surface of the first mounting plate 20. One side of the fixed frame 16 is rotatably connected to one end of the threaded rod 19. The outer surface of the threaded rod 19 is threadedly connected to the inside of the movable frame 15. The top of the uppermost first connecting plate 11 is slidably connected to the inside of the first mounting plate 20 through a movable pin 2. The top of the uppermost second connecting plate 13 is rotatably connected to the inside of the first mounting plate 20 through a movable pin 3. In a preferred embodiment of the present invention, the angle between the first connecting plate 11 and the second connecting plate 13 is first adjusted by the movable pin 14 to complete the initial angle calibration of the lifting mechanism, ensuring that the adjustment stroke is adapted to the target crack height. After calibration, the drive motor 18 is started, and the output end of the drive motor 18 drives the threaded rod 19 to rotate synchronously. Since the outer surface of the threaded rod 19 is threadedly connected to the inside of the moving frame 15, and the moving frame 15 is fixedly connected to the guide ring shaft 10, and the guide ring shaft 10 is slidably connected in the guide groove 9 of the guide plate 8, the rotational motion of the threaded rod 19 is converted into the linear lifting motion of the moving frame 15. When the moving frame 15 lifts and lowers, it drives the guide ring shaft 10 to slide smoothly in the guide groove 9. The guide plate 8 plays a guiding and limiting role for the guide ring shaft 10, avoiding deviation or shaking during the lifting and lowering process. Moreover, the guide ring shaft 10 drives the fixedly connected first connecting plate 11 to lift and lower synchronously. The first connecting plate 11, together with the second connecting plate 13, drives the first mounting plate 20 fixedly installed on one side to lift and lower, thereby driving the mounting box 21 on the upper surface of the first mounting plate 20 to lift and lower synchronously.

[0021] Furthermore, the transport mechanism includes a storage box 3, a transport pipe 4, a pump 5, and a telescopic hose 6. The storage box 3 is fixedly connected to the upper surface of the first fixed plate 2. The transport pipe 4 is fixedly installed on the upper surface of the storage box 3. The pump 5 is fixedly installed on the upper surface of the storage box 3. The telescopic hose 6 is fixedly connected to one side of the pump 5. The bottom of the transport pipe 4 extends into the interior of the storage box 3. The output end of the transport pipe 4 is connected to the input end of the pump 5. In a preferred embodiment of the present invention, sufficient grouting material is first stored in the storage tank 3. After the pump 5 is started, a negative pressure suction is generated. Since the output end of the transport pipe 4 extends into the storage tank 3, the negative pressure suction can smoothly draw the grouting material in the storage tank 3 into the transport pipe 4. The grouting material is transported to the pump 5 through the transport pipe 4. With the transport power provided by the pump 5, the grouting material is pressurized and transported to the telescopic hose 6. Then, it is accurately transported to the grouting head 56 through the telescopic hose 6. If the position and angle of the grouting head 56 are adjusted by the lifting mechanism, the pushing mechanism or the adjusting mechanism, the telescopic hose 6 can extend, retract and swing synchronously with the grouting head 56 to avoid the interruption of transport caused by the pulling and bending of the pipeline.

[0022] Furthermore, a pushing mechanism is provided on one side of the mounting box 21. The pushing mechanism includes a slide groove 22, a first cylinder 23, a first air rod 24 and a moving plate 25. Slide grooves 22 are provided on the left and right sides inside the mounting box 21. A first cylinder 23 is fixedly installed on one side of the mounting box 21. A first air rod 24 is fixedly installed at the output end of the first cylinder 23. A moving plate 25 is fixedly installed at the output end of the first air rod 24. In a preferred embodiment of the present invention, after the lifting mechanism adjusts the mounting box 21 to the target height, if there is a horizontal positional deviation between the grouting head 56 and the crack in the top plate, the first cylinder 23 is activated. The output end of the first cylinder 23 drives the first air rod 24 to extend and retract. When the first air rod 24 extends and retracts, it drives the moving plate 25 at the output end to move synchronously. Since the mounting box 21 has sliding grooves 22 on the left and right sides, the moving plate 25 can slide smoothly horizontally along the sliding grooves 22. The sliding grooves 22 guide and limit the moving plate 25. When the moving plate 25 moves horizontally, it drives the adjustment mechanism and the grouting head 56 fixedly installed above it to move horizontally synchronously until the grouting head 56 is pushed to the front of the crack and achieves a horizontal and precise connection with the crack.

[0023] Furthermore, a feeding mechanism is provided on the upper surface of the first fixed plate 2. The feeding mechanism includes a support plate 26, a material box 27, a second mounting bracket 28, a first servo motor 29, a first rotating shaft 30, a connecting rod 31, a connecting shaft 32, a stirring blade 33, a feed inlet 34, and a guide pipe 35. A pair of support plates 26 are fixedly installed on the upper surface of the first fixed plate 2. A material box 27 is fixedly installed on one side of the pair of support plates 26. A second mounting bracket 28 is fixedly installed on one side of the upper surface of the material box 27. The upper surface of the second mounting bracket 28... A first servo motor 29 is fixedly installed. A first rotating shaft 30 is fixedly installed at the output end of the first servo motor 29. A connecting rod 31 is fixedly installed at the bottom end of the first rotating shaft 30. A pair of connecting shafts 32 are movably connected to the left and right sides of the lower surface of the connecting rod 31. Several stirring blades 33 are fixedly installed on the outer wall of the pair of connecting shafts 32. A feed inlet 34 is fixedly installed on one side wall of the material box 27. A guide pipe 35 is fixedly installed on the other side wall of the material box 27, and the other side of the guide pipe 35 extends into the interior of the storage box 3. In a preferred embodiment of the present invention, before operation, sufficient grouting material is added into the material box 27 through the feed inlet 34. Then, the first servo motor 29 is started, and the output end of the first servo motor 29 drives the first rotating shaft 30 to rotate synchronously. The first rotating shaft 30 drives the connecting rod 31 at the output end of its lower surface to rotate. When the connecting rod 31 rotates, it drives a pair of connecting shafts 32 on the left and right sides of its lower surface to rotate synchronously. The connecting shafts 32 then drive a number of stirring blades 33 on their outer wall to rotate. The stirring blades 33 rotate at high speed in the material box 27 to stir the grouting material in an all-round and uniform manner, preventing the material from settling and clumping, and ensuring the fluidity and consistency of the grouting material. At the same time, the uniformly stirred grouting material is naturally transported to the storage box 3 of the transport mechanism through the guide pipe 35 on the other side wall of the material box 27.

[0024] Furthermore, the upper surface of the movable plate 25 is provided with an adjustment mechanism, which includes a protective box 36, a first fixed block 37, a rotating rod 38, a first fixed shaft 39, a first fixed bolt 40, a second fixed block 41, a second servo motor 42, a second rotating shaft 43, a semi-circular gear 44, a meshing gear 45, a movable shaft 46, a lifting plate 47, a second mounting plate 48, a first movable block 49, a second cylinder 50, a second air rod 51, a second movable block 52, a third mounting plate 53, an adjustment rod 54, a mounting block 55, and a grouting head 56. A protective box 36 is fixedly installed on the upper surface of the protective box 36. A pair of first fixing blocks 37 are fixedly installed on the front and rear sides inside the protective box 36. A pair of rotating rods 38 are movably connected to the left and right sides of the first fixing blocks 37. A first fixing shaft 39 is movably connected inside the first fixing blocks 37 and the rotating rods 38. A first fixing bolt 40 is movably connected inside the other side of the rotating rods 38. A pair of second fixing blocks 41 are fixedly connected to the upper surface of the protective box 36. A second servo motor 42 is fixedly installed on one side of the protective box 36. The output end of the second servo motor 42 is fixed. A second rotating shaft 43 is installed, and a semi-circular gear 44 is fixedly installed on the outer surface of the second rotating shaft 43. A meshing gear 45 is meshed with one side of the semi-circular gear 44. A pair of movable shafts 46 are movably connected to one side of the meshing gear 45. A lifting plate 47 is movably connected to one side of the meshing gear 45. The movable shafts 46 pass through the interior of the lifting plate 47 and the meshing gear 45. A second mounting plate 48 is fixedly installed on the left and right sides of the lifting plate 47. A first movable block 49 is movably connected to one side of the second mounting plate 48. A second movable block 49 is fixedly installed on one side of the first movable block 49. Two cylinders 50, a second air rod 51 is fixedly installed at the output end of the second cylinder 50, a second movable block 52 is fixedly installed at the output end of the second air rod 51, a third mounting plate 53 is movably connected to the left and right sides of the second movable block 52, an adjusting rod 54 is fixedly installed on the lower surface of the third mounting plate 53, an mounting block 55 is fixedly installed on the upper surface of the adjusting rod 54, a grouting head 56 is installed on one side of the mounting block 55, one side of the adjusting rod 54 is connected to the left and right sides of the lifting plate 47, and one side of the grouting head 56 is connected to the output end of the telescopic hose 6; In a preferred embodiment of the present invention, after the lifting mechanism and the pushing mechanism adjust the grouting head 56 to the target height and horizontal position near the crack, the adjustment mechanism is activated, and the second servo motor 42 is started. The output end of the second servo motor 42 drives the second rotating shaft 43 to rotate synchronously. The second rotating shaft 43 drives the semi-circular gear 44 fixedly installed on its outer surface to rotate. Since the semi-circular gear 44 is meshed with the meshing gear 45, the rotation of the semi-circular gear 44 drives the meshing gear 45 to rotate synchronously. The meshing gear 45 then drives the lifting plate 47 movably connected to one side to rotate at an angle. The rotating rod 38 rotates synchronously through the first fixed shaft 39, assisting the lifting plate 47 to rotate smoothly. When the lifting plate 47 is adjusted to the target angle, the second cylinder 50 on the second mounting plate 48 on both sides of the lifting plate 47 is activated. The operation of the second cylinder 50 drives the second air rod 51 at the output end to perform telescopic movement. The second air rod 51 drives the second movable block 52 at the output end to move synchronously. The second movable block 52 drives the third mounting plate 53 on its left and right sides to make fine adjustments. The third mounting plate 53 then drives the adjusting rod 54, mounting block 55 and grouting head 56 on its lower surface to make fine angle adjustments.

[0025] In use, before operation, sufficient grouting material is added to the material box 27 through the feed inlet 34 of the feeding mechanism. Then, the first servo motor 29 on the second mounting frame 28 is started to drive the first rotating shaft 30, connecting rod 31 and connecting shaft 32 to rotate, which drives the stirring blade 33 to rotate at high speed in the material box 27, so as to uniformly stir the grouting material in all directions and prevent the material from settling and clumping. The stirred grouting material is naturally transported to the storage box 3 of the transportation mechanism through the guide pipe 35, thus completing the preliminary preparation and feeding of the grouting material and reserving qualified materials for subsequent grouting operations. At a height higher than the target crack, the angle between the first connecting plate 11 and the second connecting plate 13 in the lifting mechanism is first adjusted by the movable pin 14 to complete the initial angle calibration. Then, the drive motor 18 on the first mounting frame 17 is started to drive the threaded rod 19 to rotate. Utilizing the threaded connection between the threaded rod 19 and the moving frame 15, the rotational motion is converted into the linear lifting motion of the moving frame 15. The moving frame 15 drives the guide ring shaft 10 to slide smoothly in the guide groove 9 of the guide plate 8. Then, through the first connecting plate 11 and the second connecting plate 13, the first mounting plate 20 and the mounting box 21 are lifted and lowered synchronously, and the mounting box 21 and the subsequently connected push mechanism, adjustment mechanism, and grouting head 56 are precisely adjusted to a height position that matches the crack. When there is a horizontal positional deviation between the grouting head 56 and the crack, the first cylinder 23 on one side of the mounting box 21 is activated, driving the first air rod 24 to extend and retract, which in turn drives the moving plate 25 to slide horizontally along the sliding groove 22 inside the mounting box 21. Simultaneously, the moving plate 25 drives the adjustment mechanism above it and the grouting head 56 to move horizontally until the grouting head 56 is pushed to the front of the crack, thus completing the horizontal and precise docking of the grouting head 56 with the crack. After the height and horizontal position are adjusted, the second servo motor 42 of the adjustment mechanism is started, which drives the second rotating shaft 43 and the semi-circular gear 44 to rotate. Through the meshing transmission of the semi-circular gear 44 and the meshing gear 45, the lifting plate 47 is rotated at an angle. At the same time, the rotating rod 38 inside the protective box 36 rotates synchronously around the first fixed shaft 39 to assist the lifting plate 47 in smooth adjustment. When the lifting plate 47 is adjusted to the target angle, the second cylinder 50 on the second mounting plate 48 is started, which drives the second air rod 51 to extend and retract, which drives the second movable block 52 and the third mounting plate 53 to make fine adjustments. Then, through the adjustment rod 54 and the mounting block 55, the grouting head 56 is driven to make precise position and angle fine adjustments to ensure that the grouting head 56 is completely fitted with cracks of different directions and inclination angles. The movable shaft 46 on the side of the meshing gear 45 is kept in a pre-fixed state, and the adjusted angle is locked only by tightening the first fixing bolt 40. Once the grouting head 56 is precisely aligned with the fissure, the pump 5 of the transport mechanism is activated. Using negative pressure suction, the grouting material in the storage tank 3 is drawn in and pressurized through the transport pipe 4, and then transported to the grouting head 56 through the telescopic hose 6. The grouting head 56 injects the material into the fissure in the coal seam roof. During the grouting process, if the grouting head 56 adjusts its position or angle with the adjustment mechanism, the telescopic hose 6 can extend, retract, and swing synchronously to avoid interruption of transport caused by pipe pulling and bending, ensuring continuous and stable grouting operation. After the fissure is sealed tightly, the pump 5 and each mechanism drive component are turned off in sequence to complete the grouting operation.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0027] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A coal seam roof fissure grouting and sealing device, comprising: A mounting base plate (1) is provided, on the upper surface of which a first fixing plate (2) is fixedly mounted. A lifting mechanism is provided on the upper surface of the mounting base plate (1). The lifting mechanism includes a second fixing plate (7) fixedly mounted on the upper surface of the mounting base plate (1). A pair of guide plates (8) are fixedly mounted on the upper surface of the second fixing plate (7). A pair of guide grooves (9) are provided inside the pair of guide plates (8). A pair of guide ring shafts (10) are slidably connected inside the pair of guide grooves (9). A first connecting plate (11) is movably mounted on the outer surface of the pair of guide ring shafts (10). A mounting shaft (12) is movably connected to one side of the second fixing plate (7). A second connecting plate (13) is fixedly mounted on the outer surface of the mounting shaft (12). (11) and the second connecting plate (13) are movably connected by a movable pin shaft (14). One end of the guide ring shaft (10) is fixedly installed with a movable frame (15). The upper surface of the mounting base plate (1) is fixedly installed with a fixed frame (16). The upper surface of the mounting base plate (1) is fixedly connected with a first mounting frame (17). The upper surface of the first mounting frame (17) is fixedly installed with a drive motor (18). The output end of the drive motor (18) is fixedly installed with a threaded rod (19). The first connecting plate (11) and the second connecting plate (13) are arranged in a staggered manner. The top of the first connecting plate (11) and the second connecting plate (13) at the top is provided with a first mounting plate (20). The upper surface of the first mounting plate (20) is fixedly installed with a mounting box (21).

2. The coal seam roof fissure grouting and sealing device according to claim 1, characterized in that: One side of the fixed frame (16) is rotatably connected to one end of the threaded rod (19), the outer surface of the threaded rod (19) is threadedly connected to the inside of the movable frame (15), the top of the first connecting plate (11) located at the top is slidably connected to the inside of the first mounting plate (20) through the second movable pin, and the top of the second connecting plate (13) located at the top is rotatably connected to the inside of the first mounting plate (20) through the third movable pin.

3. The coal seam roof fissure grouting and sealing device according to claim 1, characterized in that: The upper surface of the first fixed plate (2) is provided with a transport mechanism, which includes a storage box (3) fixedly connected to the upper surface of the first fixed plate (2), a transport pipe (4) fixedly installed on the upper surface of the storage box (3), a pump (5) fixedly installed on the upper surface of the storage box (3), and a telescopic hose (6) fixedly connected to one side of the pump (5).

4. The coal seam roof fissure grouting and sealing device according to claim 3, characterized in that: The bottom of the transport pipe (4) extends into the interior of the storage tank (3), and the output end of the transport pipe (4) is connected to the input end of the pump (5).

5. A coal seam roof fissure grouting and sealing device according to claim 1, characterized in that: A pushing mechanism is provided on one side of the mounting box (21). The pushing mechanism includes sliding grooves (22) opened on the left and right sides inside the mounting box (21). A first cylinder (23) is fixedly installed on one side of the mounting box (21). A first air rod (24) is fixedly installed at the output end of the first air rod (23). A moving plate (25) is fixedly installed at the output end of the first air rod (24).

6. The coal seam roof fissure grouting and sealing device according to claim 1, characterized in that: The upper surface of the first fixed plate (2) is provided with a feeding mechanism. The feeding mechanism includes a pair of support plates (26) fixedly installed on the upper surface of the first fixed plate (2). A material box (27) is fixedly installed on one side of the pair of support plates (26). A second mounting bracket (28) is fixedly installed on one side of the upper surface of the material box (27). A first servo motor (29) is fixedly installed on the upper surface of the second mounting bracket (28). A first rotating shaft (30) is fixedly installed at the output end of the first servo motor (29). A connecting rod (31) is fixedly installed at the bottom end of the first rotating shaft (30). A pair of connecting shafts (32) are movably connected to the left and right sides of the lower surface of the connecting rod (31). A plurality of stirring blades (33) are fixedly installed on the outer wall of the pair of connecting shafts (32). A feed inlet (34) is fixedly installed on one side wall of the material box (27). A guide pipe (35) is fixedly installed on the other side wall of the material box (27), and the other side of the guide pipe (35) extends into the interior of the storage box (3).

7. A coal seam roof fissure grouting and sealing device according to claim 5, characterized in that: The upper surface of the movable plate (25) is provided with an adjustment mechanism. The adjustment mechanism includes a protective box (36) fixedly installed on the upper surface of the movable plate (25). A pair of first fixing blocks (37) are fixedly installed on the front and rear sides inside the protective box (36). A pair of rotating rods (38) are movably connected to the left and right sides of the first fixing blocks (37). A first fixing shaft (39) is movably connected inside the first fixing blocks (37) and the rotating rods (38). A first fixing bolt (40) is movably connected inside the other side of the rotating rods (38).

8. A coal seam roof fissure grouting and sealing device according to claim 7, characterized in that: A pair of second fixing blocks (41) are fixedly connected to the upper surface of the protective box (36). A second servo motor (42) is fixedly installed on one side of the protective box (36). A second rotating shaft (43) is fixedly installed at the output end of the second servo motor (42). A semi-circular gear (44) is fixedly installed on the outer surface of the second rotating shaft (43). A meshing gear (45) is meshed on one side of the semi-circular gear (44). A pair of movable shafts (46) are movably connected on one side of the meshing gear (45). A lifting plate (47) is movably connected on one side of the meshing gear (45). The movable shaft (46) passes through the interior of the lifting plate (47) and the meshing gear (45).

9. A coal seam roof fissure grouting and sealing device according to claim 8, characterized in that: The lifting plate (47) is fixedly installed with a second mounting plate (48) on both sides. A first movable block (49) is movably connected to one side of the second mounting plate (48). A second cylinder (50) is fixedly installed on one side of the first movable block (49). A second air rod (51) is fixedly installed at the output end of the second air rod (50). A second movable block (52) is fixedly installed at the output end of the second air rod (51). A third mounting plate (53) is movably connected to both sides of the second movable block (52). An adjusting rod (54) is fixedly installed on the lower surface of the third mounting plate (53). An mounting block (55) is fixedly installed on the upper surface of the adjusting rod (54). A grouting head (56) is installed on one side of the mounting block (55).

10. A coal seam roof fissure grouting and sealing device according to claim 9, characterized in that: One side of the adjusting rod (54) is connected to the left and right sides of the lifting plate (47), and one side of the grouting head (56) is connected to the output end of the telescopic hose (6).

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