A curtain grouting device and grouting method

Abstract

A curtain grouting device and grouting method are disclosed, comprising a grouting pipe, a connecting plate fixedly sleeved on the outer wall of the top of the grouting pipe, and a cylindrical cover fixedly connected to the bottom surface of the connecting plate; a plurality of mounting grooves are circumferentially formed on the side wall of the grouting pipe, and movable plates are detachably connected in the mounting grooves; a plurality of sealing plates are slidably connected in the cylindrical cover, and the sealing plates are arranged one-to-one with the movable plates, the sealing plates and movable plates having the same size, the sealing plates being detachably connected to the mounting grooves, and a first slider being slidably connected to the side wall of the sealing plate near the movable plate via a first transmission assembly, the first slider being fixedly connected to the movable plate with a support rod, the bottom surface of the first slider being provided with a cleaning assembly, the cleaning assembly being detachably connected to the inner wall of the grouting pipe; a plurality of second transmission assemblies are provided on the top surface of the connecting plate, the second transmission assemblies being arranged one-to-one with the sealing plates and being driven and connected. This invention can clean the grouting pipe inside the hole, reducing the labor intensity of workers and avoiding soiling workers' clothes and the working environment.

Description

Technical Field

[0001] This invention belongs to the field of curtain grouting technology, and particularly relates to a curtain grouting device and its grouting method. Background Technology

[0002] In the process of coal mining, in order to improve mining safety and avoid safety hazards caused by cracks or pores in the soil layer, it is necessary to use a grouting device to perform curtain grouting on the cracks and pores in the coating. Curtain grouting is a grouting project that injects grout into the cracks and pores of rock or soil layers to form a continuous water-blocking curtain, thereby reducing seepage flow and reducing seepage pressure.

[0003] The construction process of curtain grouting includes drilling, drilling flushing, water pressure test, grouting and quality inspection. However, after each grouting, the inner wall of the grouting pipe of the existing curtain grouting device is prone to grout sticking. The grouting pipe needs to be pulled out and manually cleaned, which increases the labor intensity of the workers. In addition, during the process of pulling out the grouting pipe for cleaning, the grout can easily flow out from the grouting pipe, which can easily soil the workers' clothes and the work site.

[0004] Therefore, there is an urgent need for a curtain grouting device and grouting method that can self-clean the inner wall of the grouting pipe after grouting is completed. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a curtain grouting device and grouting method, aiming to solve or improve at least one of the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides a curtain grouting device, including a grouting pipe, a connecting plate fixedly sleeved on the outer wall of the top end of the grouting pipe, a cylindrical cover fixedly connected to the bottom surface of the connecting plate, and the cylindrical cover covering the grouting pipe;

[0007] The sidewall of the grouting pipe is provided with several mounting grooves, and a movable plate is detachably connected in the mounting groove.

[0008] A plurality of sealing plates are slidably connected inside the shroud, and the plurality of sealing plates are arranged in a one-to-one correspondence with a plurality of movable plates. The sealing plates and the movable plates are the same size. The sealing plates are detachably connected to the mounting groove. A first slider is slidably connected to the side wall of the sealing plate near the movable plate through a first transmission assembly. A support rod is fixed between the first slider and the movable plate. A cleaning assembly is provided on the bottom surface of the first slider. The cleaning assembly is detachably connected to the inner wall of the grouting pipe.

[0009] The top surface of the connecting plate is provided with a plurality of second transmission components, and the plurality of second transmission components are configured and connected to the plurality of sealing plates in a one-to-one manner.

[0010] Preferably, the first transmission component includes a transmission groove, which is vertically formed on the side wall of the sealing plate near the movable plate. A first servo motor is fixedly connected to the top of the transmission groove, and a first lead screw is fixedly connected to the output shaft of the first servo motor. The first slider is threadedly connected to the first lead screw, and the two side walls of the first slider abut against the side wall of the transmission groove.

[0011] Preferably, the cleaning assembly includes a second servo motor, a main gear, a reversing gear, and two symmetrical auxiliary gears. The second servo motor is fixedly mounted on the bottom surface of the first slider. The main gear is fixedly connected to the output shaft of the second servo motor. The reversing gear and the auxiliary gear are rotatably connected to the bottom surface of the first slider. The main gear meshes with the reversing gear and any one of the auxiliary gears. The other auxiliary gear meshes with the reversing gear. An arc-shaped plate is fixedly attached to the auxiliary gear. The inner arc surfaces of the two arc plates are arranged opposite each other. An arc-shaped scraper is fixedly attached to the outer arc surface of the arc plate through several spring telescopic rods. The arc-shaped scraper is detachably connected to the inner wall of the grouting pipe.

[0012] Preferably, the second transmission assembly includes a second lead screw, which is rotatably connected to the top surface of the connecting plate. A second slider is threaded onto the second lead screw, and the second slider is drivenly connected to the sealing plate. A first bevel gear is fixedly connected to one end of the second lead screw, and a plurality of the first bevel gears are drivenly connected to a main drive assembly.

[0013] Preferably, the connecting plate has a plurality of transmission slots, and a plurality of second lead screws are arranged vertically and vertically corresponding to the plurality of transmission slots. An L-shaped connecting rod is slidably connected in the transmission slot. One end of the connecting rod is fixedly connected to the second slider, and the other end is fixedly connected to the side wall of the sealing plate away from the movable plate. The side wall of the connecting rod abuts against the two side walls of the transmission slot.

[0014] Preferably, the main drive assembly includes an annular groove formed on the top surface of the connecting plate, and the annular groove covers a plurality of first bevel gears. A drive ring is rotatably connected to the annular groove via a bearing. A first bevel gear ring is circumferentially fixed to the inner wall of the drive ring, and the first bevel gear ring meshes with a plurality of first bevel gears.

[0015] Preferably, a third servo motor is fixedly installed on the top surface of the connecting plate, the output shaft of the third servo motor is fixedly connected to a second bevel gear, and a second bevel gear ring is circumferentially fixed to the outer ring of the drive ring, with the second bevel gear meshing with the second bevel gear ring.

[0016] Preferably, a plurality of electric telescopic rods are circumferentially embedded in the bottom wall of the shroud. The telescopic ends of the electric telescopic rods extend out of the bottom wall of the shroud and are fixedly connected to cleaning blocks. The plurality of cleaning blocks are arranged in one-to-one correspondence with the plurality of movable plates and are detachably connected. The electric telescopic rods are staggered with the movable plates.

[0017] Preferably, an airbag is circumferentially fixed to the outer wall of the top of the cylinder cover, and an air pump is fixedly installed on the top surface of the connecting plate, with the air pump communicating with the airbag.

[0018] A grouting method for a curtain grouting device includes the following steps:

[0019] Step 1: Insert the casing into the grouting hole and fix its position, then connect the top of the grouting pipe to the external grouting machine;

[0020] Step 2: After grouting is completed, the inner wall of the grouting pipe is cleaned by the cleaning component.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] Grouting can be performed by inserting the shroud into the grouting hole, with the connecting plate located at the outer edge of the grouting hole, and connecting the top of the grouting pipe to an external grouting machine. After grouting is completed, the sealing plate is slid inside the shroud by the second transmission component, and the first slider pushes the support rod, which in turn pushes the movable plate, causing the sealing plate to be inserted into the installation groove. Then, by contacting the cleaning component with the inner wall of the grouting pipe and moving the first slider down by the first transmission component, the cleaning component can clean the inner wall of the grouting pipe, causing the grout adhering to the inner wall of the grouting pipe to fall into the grouting hole. This improves the grout utilization rate, allows cleaning of the grouting pipe inside the hole, reduces the labor intensity of workers, and avoids soiling workers' clothes and the working environment. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 for Figure 1 A magnified view of part A in the image;

[0026] Figure 3 for Figure 1 A magnified view of part B in the image;

[0027] Figure 4 This is a top view of the cleaning component in this invention;

[0028] Figure 5 This is a top view of the present invention;

[0029] Figure 6 This is a top view of several cleaning blocks and grouting pipes in this invention;

[0030] Figure 7 This is a side view of the sealing plate in this invention.

[0031] In the diagram: 1. Grouting pipe; 2. Connecting plate; 3. Cylinder cover; 4. Movable plate; 5. Sealing plate; 6. First slider; 7. Support rod; 8. Transmission groove; 9. First servo motor; 10. First lead screw; 11. Second servo motor; 12. Main gear; 13. Reversing gear; 14. Secondary gear; 15. Arc plate; 16. Spring telescopic rod; 17. Arc scraper; 18. Second lead screw; 19. Second slider; 20. First bevel gear; 21. Transmission slot; 22. Connecting rod; 23. Annular groove; 24. Bearing; 25. Drive ring; 26. First bevel gear ring; 27. Third servo motor; 28. Second bevel gear; 29. ​​Second bevel gear ring; 30. Electric telescopic rod; 31. Cleaning block; 32. Airbag; 33. Air pump; 34. Corrugated folded protective layer. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-7 As shown, this embodiment provides a curtain grouting device, including a grouting pipe 1, a connecting plate 2 fixedly sleeved on the outer wall of the top end of the grouting pipe 1, and a cylindrical cover 3 fixedly connected to the bottom surface of the connecting plate 2, the cylindrical cover 3 covering the grouting pipe 1.

[0035] The side wall of the grouting pipe 1 is provided with several installation grooves, and a movable plate 4 is detachably connected in the installation groove;

[0036] Several sealing plates 5 are slidably connected inside the cylinder cover 3. The sealing plates 5 are arranged one-to-one with several movable plates 4. The sealing plates 5 and movable plates 4 are the same size. The sealing plates 5 are detachably connected to the mounting groove. A first slider 6 is slidably connected to the side wall of the sealing plate 5 near the movable plate 4 through the first transmission component. A support rod 7 is fixed between the first slider 6 and the movable plate 4. A cleaning component is provided on the bottom surface of the first slider 6. The cleaning component is detachably connected to the inner wall of the grouting pipe 1.

[0037] The top surface of the connecting plate 2 is provided with several second transmission components, which are arranged and connected to several sealing plates 5 in a one-to-one manner.

[0038] By inserting the sleeve 3 into the grouting hole, with the connecting plate 2 located at the outer edge of the grouting hole, and connecting the top of the grouting pipe 1 to the external grouting machine, grouting can be performed. After grouting is completed, the second transmission component drives the sealing plate 5 to slide inside the sleeve 3, and the first slider 6 pushes the support rod 7, which in turn pushes the movable plate 4, causing the sealing plate 5 to be inserted into the installation groove. Then, by contacting the cleaning component with the inner wall of the grouting pipe 1, and by the first transmission component driving the first slider 6 to move down, the cleaning component can clean the inner wall of the grouting pipe 1, causing the grout adhering to the inner wall of the grouting pipe 1 to fall into the grouting hole, thus improving the grout utilization rate. The grouting pipe 1 can be cleaned inside the hole, reducing the labor intensity of the workers and preventing soiling of the workers' clothes and the working environment.

[0039] The internal structure of the cylinder can be protected by setting the cylinder cover 3, and the sealing plate 5 can be set so that after the movable plate 4 is pushed open, the sealing plate 5 is located in the installation groove, which can prevent the slurry from entering the cylinder cover 3.

[0040] The mounting groove is open from left to right, and the bottom of the mounting groove extends to the bottom of the grouting pipe 1.

[0041] Further optimization of the scheme: the first transmission component includes a transmission groove 8, which is vertically opened on the side wall of the sealing plate 5 near the movable plate 4. A first servo motor 9 is fixedly connected to the top of the transmission groove 8. The output shaft of the first servo motor 9 is fixedly connected to a first lead screw 10. A first slider 6 is threadedly connected to the first lead screw 10, and the two side walls of the first slider 6 abut against the side walls of the transmission groove 8, which can guide and limit the first slider 6 to prevent it from rotating.

[0042] The first servo motor 9 drives the first lead screw 10 to rotate, which in turn drives the first slider 6 to move downward. The downward movement of the first slider 6 enables the cleaning component to clean the inner wall of the grouting pipe 1.

[0043] Furthermore, corrugated folded protective layers 34 are fixedly connected between the first slider 6 and the outer edges of the top and bottom of the transmission groove, respectively. The corrugated folded protective layers 34 are preferably made of cloth or plastic. When the first slider 6 slides up and down, the first lead screw 10 and the first servo motor 9 can be protected by the folding and expansion of the two corrugated folded protective layers 34, so as to prevent them from sticking to the slurry.

[0044] The solution is further optimized. The cleaning components include a second servo motor 11, a main gear 12, a reversing gear 13, and two symmetrical auxiliary gears 14. The second servo motor 11 is fixedly installed on the bottom surface of the first slider 6. The main gear 12 is fixedly connected to the output shaft of the second servo motor 11. The reversing gear 13 and the auxiliary gear 14 are rotatably connected to the bottom surface of the first slider 6. The main gear 12 is meshed with the reversing gear 13 and any one of the auxiliary gears 14. The other auxiliary gear 14 is meshed with the reversing gear 13. An arc-shaped plate 15 is fixedly connected to the auxiliary gear 14. The inner arc surfaces of the two arc plates 15 are arranged opposite each other. An arc-shaped scraper 17 is fixedly connected to the outer arc surface of the arc plate 15 through several spring telescopic rods 16. The arc-shaped scraper 17 is detachably connected to the inner wall of the grouting pipe 1.

[0045] The second servo motor 11 drives the main gear 12 to rotate, which in turn drives the reversing gear 13 and the meshing auxiliary gear 14 to rotate. The reversing gear 13 drives the meshing auxiliary gear 14 to rotate, so that the two auxiliary gears 14 rotate in opposite directions. Thus, the two auxiliary gears 14 drive the two arc plates 15 to move relative to each other or away from each other, so that the arc plates 15 drive the arc scraper 17 to contact the inner wall of the grouting pipe 1. The spring telescopic rod 16 increases the pre-tightening force between the arc scraper 17 and the grouting pipe 1, thereby scraping and cleaning the grout from the inner wall of the grouting pipe 1.

[0046] The outer arc surfaces of the arc plate 15 and the arc scraper 17 are adapted to the inner wall arc of the grouting pipe 1.

[0047] After the arc-shaped scraper 17 moves down to clean the inner wall of the grouting pipe 1 once, the two arc-shaped plates 15 can be retracted by the second servo motor 11, and then the first slider 6 drives the arc-shaped plates 15 to return to the top, so that the grout can be scraped downward again.

[0048] Further optimization of the scheme: the second transmission component includes a second lead screw 18, which is rotatably connected to the top surface of the connecting plate 2. A second slider 19 is threadedly connected to the second lead screw 18, and the second slider 19 is connected to the sealing plate 5 in a transmission connection. A first bevel gear 20 is fixedly connected to one end of the second lead screw 18, and a number of first bevel gears 20 are connected to the main drive component in a transmission connection.

[0049] The main drive assembly drives several first bevel gears 20 to rotate, which in turn drives the second lead screw 18 to rotate, thereby moving the second slider 19, which in turn drives the sealing plate 5 to slide inside the cylinder cover 3.

[0050] The main drive component allows several sealing plates 5 to move synchronously, avoiding errors.

[0051] To further optimize the design, the connecting plate 2 is provided with several transmission slots 21, and several second lead screws 18 are arranged one above the other in a corresponding manner to the transmission slots 21. An L-shaped connecting rod 22 is slidably connected in the transmission slot 21. One end of the connecting rod 22 is fixedly connected to the second slider 19, and the other end is fixedly connected to the side wall of the sealing plate 5 away from the movable plate 4. The side wall of the connecting rod 22 abuts against the two side walls of the transmission slot 21, which can guide and limit the second slider 19 to prevent it from rotating.

[0052] The second slider 19 moves, driving the connecting rod 22 to move, which in turn drives the sealing plate 5 to move. Setting the connecting rod 22 to an L-shape can avoid interference with the insertion of the sealing plate 5 into the mounting slot.

[0053] The scheme is further optimized. The main drive component includes an annular slide groove 23, which is opened on the top surface of the connecting plate 2. The annular slide groove 23 covers a number of first bevel gears 20. A drive ring 25 is rotatably connected to the annular slide groove 23 through a bearing 24. A first bevel gear ring 26 is circumferentially fixed to the inner wall of the drive ring 25. The first bevel gear ring 26 meshes with a number of first bevel gears 20.

[0054] By rotating the drive ring 25, the first bevel gear ring 26 can be driven to rotate, thereby driving several first bevel gears 20 to rotate synchronously, thus causing several second sliders 19 to move synchronously.

[0055] The scheme is further optimized. A third servo motor 27 is fixedly installed on the top surface of the connecting plate 2. The output shaft of the third servo motor 27 is fixedly connected to a second bevel gear 28. A second bevel gear ring 29 is fixedly connected to the outer ring of the drive ring 25. The second bevel gear 28 and the second bevel gear ring 29 are meshed and connected.

[0056] The second bevel gear 28 is driven to rotate by the third servo motor 27, which in turn drives the second bevel gear ring 29 to rotate, which in turn drives the drive ring 25 to rotate.

[0057] To further optimize the design, a number of electric telescopic rods 30 are embedded around the bottom wall of the cylinder cover 3. The telescopic ends of the electric telescopic rods 30 extend out of the bottom wall of the cylinder cover 3 and are fixedly connected to cleaning blocks 31. The cleaning blocks 31 are arranged in a one-to-one correspondence with a number of movable plates 4 and are detachably connected. The electric telescopic rods 30 and the movable plates 4 are staggered.

[0058] In order to clean the movable plate 4, the cleaning block 31 is pushed by the electric telescopic rod 30 to the corresponding position after the movable plate 4 is pushed out, so that the movable plate 4 contacts the cleaning block 31 after it is pushed out. When the first slider 6 slides up and down, it can drive the movable plate 4 to slide against the cleaning block 31, thereby cleaning the slurry adhering to the movable plate 4.

[0059] The cleaning block 31 is arc-shaped to facilitate its fit with the movable plate 4, and the side facing away from the movable plate 4 is inclined to facilitate the slurry to slide down.

[0060] The scheme is further optimized by attaching an airbag 32 to the outer wall of the top of the cylinder 3 in a circumferential manner, and fixing an air pump 33 to the top surface of the connecting plate 2. The air pump 33 is connected to the airbag 32.

[0061] After the sleeve 3 is inserted into the grouting hole, the air bladder 32 is expanded by the air pump 33, which can improve the sealing effect of the grouting hole and improve the stability of the device in the grouting hole.

[0062] A grouting method for a curtain grouting device includes the following steps:

[0063] Step 1: Insert the cylinder cover 3 into the grouting hole and let the air bag 32 expand to fix the entire device in position, and connect the top of the grouting pipe 1 to the external grouting machine;

[0064] Step 2: After grouting is completed, the cleaning component cleans the inner wall of the grouting pipe 1. First, the cleaning block 31 is extended, and then the second bevel gear 28 is rotated by the third servo motor 27, which in turn drives the drive ring 25 to rotate by the second bevel gear ring 29, causing the first bevel gear ring 26 to drive several first bevel gears 20 to rotate, thereby causing several second sliders 19 to drive several sealing plates 5 to slide and engage with the installation groove, so that the movable plate 4 is pushed out to correspond with the cleaning block 31. Then, the second servo motor drives the two arc-shaped scrapers 17 to contact the inner wall of the grouting pipe 1, and the first servo motor 9 drives the first slider 6 to move, thereby cleaning the grout on the inner wall of the grouting pipe 1 and the side wall of the movable plate 4.

[0065] In this embodiment, the movable plate 4 is arranged in four circumferentially at equal intervals. The length of the arc-shaped scraper 17 is adapted to half of the inner wall of each grouting pipe 1 section. Thus, the eight arc-shaped scrapers 17 surround and adapt to the entire inner wall of the grouting pipe 1, thereby increasing the cleaning area and cleaning effect.

[0066] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0067] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A curtain grouting device, characterized in that: The grouting pipe (1) is fixedly sleeved on the outer wall of the top end of the grouting pipe (1), and a cylindrical cover (3) is fixedly connected to the bottom surface of the connecting plate (2), and the cylindrical cover (3) covers the grouting pipe (1). The grouting pipe (1) has several mounting grooves circumferentially opened on its side wall, and a movable plate (4) is detachably connected in the mounting groove. A plurality of sealing plates (5) are slidably connected inside the shroud (3). The plurality of sealing plates (5) are arranged in a one-to-one correspondence with the plurality of movable plates (4). The sealing plates (5) and the movable plates (4) are the same size. The sealing plates (5) are detachably connected to the mounting groove. A first slider (6) is slidably connected to the side wall of the sealing plate (5) near the movable plate (4) through a first transmission assembly. A support rod (7) is fixed between the first slider (6) and the movable plate (4). A cleaning assembly is provided on the bottom surface of the first slider (6). The cleaning assembly is detachably connected to the inner wall of the grouting pipe (1). The top surface of the connecting plate (2) is provided with a plurality of second transmission components, and the plurality of second transmission components are configured and connected to the plurality of sealing plates (5) in a one-to-one correspondence. The first transmission assembly includes a transmission groove (8), which is vertically opened on the side wall of the sealing plate (5) near the movable plate (4). A first servo motor (9) is fixedly connected to the top of the transmission groove (8). A first lead screw (10) is fixedly connected to the output shaft of the first servo motor (9). The first slider (6) is threadedly connected to the first lead screw (10), and the two side walls of the first slider (6) abut against the side wall of the transmission groove (8). The cleaning assembly includes a second servo motor (11), a main gear (12), a reversing gear (13), and two symmetrical auxiliary gears (14). The second servo motor (11) is fixedly installed on the bottom surface of the first slider (6). The main gear (12) is fixedly connected to the output shaft of the second servo motor (11). The reversing gear (13) and the auxiliary gear (14) are rotatably connected to the bottom surface of the first slider (6). The main gear (12) meshes with the reversing gear (13) and any of the auxiliary gears (14). The other auxiliary gear (14) meshes with the reversing gear (13). An arc plate (15) is fixedly connected to the auxiliary gear (14). The inner arc surfaces of the two arc plates (15) are arranged opposite each other. An arc scraper (17) is fixedly connected to the outer arc surface of the arc plate (15) through several spring telescopic rods (16). The arc scraper (17) is detachably connected to the inner wall of the grouting pipe (1). The second transmission assembly includes a second lead screw (18), which is rotatably connected to the top surface of the connecting plate (2). A second slider (19) is threaded onto the second lead screw (18), and the second slider (19) is connected to the sealing plate (5) in a transmission connection. A first bevel gear (20) is fixedly connected to one end of the second lead screw (18), and a plurality of the first bevel gears (20) are connected to the main drive assembly in a transmission connection.

2. The curtain grouting device according to claim 1, characterized in that: The connecting plate (2) is provided with a plurality of transmission slots (21), and a plurality of second lead screws (18) are arranged in a vertically corresponding manner to the plurality of transmission slots (21). An L-shaped connecting rod (22) is slidably connected in the transmission slot (21). One end of the connecting rod (22) is fixedly connected to the second slider (19), and the other end is fixedly connected to the side wall of the sealing plate (5) away from the movable plate (4). The side wall of the connecting rod (22) abuts against the two side walls of the transmission slot (21).

3. The curtain grouting device according to claim 1, characterized in that: The main drive assembly includes an annular groove (23), which is formed on the top surface of the connecting plate (2) and covers a plurality of first bevel gears (20). A drive ring (25) is rotatably connected to the annular groove (23) via a bearing (24). A first bevel gear ring (26) is circumferentially fixed to the inner wall of the drive ring (25), and the first bevel gear ring (26) meshes with a plurality of first bevel gears (20).

4. A curtain grouting device according to claim 3, characterized in that: The top surface of the connecting plate (2) is fixedly mounted with a third servo motor (27), the output shaft of the third servo motor (27) is fixedly connected with a second bevel gear (28), the outer ring of the drive ring (25) is circumferentially fixed with a second bevel gear ring (29), and the second bevel gear (28) meshes with the second bevel gear ring (29).

5. A curtain grouting device according to claim 1, characterized in that: The bottom wall of the cylindrical cover (3) is circumferentially embedded with a number of electric telescopic rods (30). The telescopic ends of the electric telescopic rods (30) extend out of the bottom wall of the cylindrical cover (3) and are fixedly connected with cleaning blocks (31). The cleaning blocks (31) are arranged in a one-to-one correspondence with the movable plates (4) and are detachably connected. The electric telescopic rods (30) and the movable plates (4) are misaligned.

6. A curtain grouting device according to claim 1, characterized in that: An airbag (32) is fixedly connected to the outer wall of the top of the cylinder cover (3) in a circumferential manner, and an air pump (33) is fixedly installed on the top surface of the connecting plate (2), and the air pump (33) is connected to the airbag (32).

7. A grouting method for a curtain grouting device, based on the curtain grouting device according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Insert the casing (3) into the grouting hole and fix its position, and connect the top of the grouting pipe (1) to the external grouting machine; Step 2: After grouting is completed, the inner wall of the grouting pipe (1) is cleaned by the cleaning component.

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