Curtain grouting assembly for coal mine water control

Abstract

The utility model discloses a curtain grouting assembly for coal mine water prevention and control, and particularly relates to the technical field of coal mine water prevention and control, which comprises a coal mine layer, a plurality of grouting holes are arranged on the side wall of the coal mine layer; a fixing ring is arranged at the bottom end of the grouting gun, a slurry conveying pipe is connected to the top end of the grouting gun, and a curtain slurry supply unit is arranged at the end of the slurry conveying pipe. The grouting gun is provided with the fixing ring, the multiple sets of fixing frames, the movable blocks, the connecting arms, the positioning rods and other structures, under the cooperation of the synchronous moving unit, after the grouting gun and the positioning rods on the side edge of the grouting gun are inserted into a grouting hole together, the multiple sets of positioning rods can be controlled to be synchronously folded inwards or unfolded outwards, and therefore the grouting gun can be conveniently and rapidly moved. According to the grouting gun fixing device, the multiple sets of positioning rods can abut against the inner wall of the grouting hole, then the fixing ring can be tightly limited to the grouting hole, a grouting gun can be supported and fixed, the grouting gun is prevented from moving and disengaging, the stability of the grouting gun is greatly guaranteed, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of coal mine water control technology, specifically to a curtain grouting component for coal mine water control. Background Technology

[0002] Coal mine water control refers to the safety measures formulated in coal mine production to effectively prevent and respond to major water hazard accidents in coal mines. Among them, curtain grouting is the most commonly used technical means. It involves injecting grout into the rock and soil layer through drilling to fill cracks or pores and form a waterproof curtain, reducing the permeability of the strata. Its core functions include controlling the groundwater flow rate, blocking water inflow channels, and enhancing the stability of the rock and soil mass. It is suitable for engineering scenarios such as mining areas and submarine tunnels.

[0003] Currently, existing curtain grouting components for water control in coal mines often require drilling multiple holes in the soil and rock layers during application. Grouting guns are then inserted into each hole sequentially to fill cracks or pores and form a waterproof curtain. However, due to the high pressure during grouting and the poor stability of the gun head inserted into the hole, it is easy for the gun head to move and detach, which greatly affects the curtain grouting effect. Utility Model Content

[0004] The purpose of this invention is to provide a curtain grouting assembly for water control in coal mines. By incorporating a fixing ring, multiple sets of fixing frames, movable blocks, connecting arms, and positioning rods on the grouting gun, and with the cooperation of a synchronous moving unit, the grouting gun and its side positioning rods are inserted into the grouting hole. The multiple positioning rods can then be controlled to synchronously retract inwards or expand outwards, allowing them to press against the inner wall of the grouting hole. This, in turn, tightly confines the fixing ring at the grouting hole, thus supporting and fixing the grouting gun and preventing it from moving away. This greatly ensures the stability of the grouting gun and provides better performance, overcoming the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a curtain grouting assembly for water control in coal mines, comprising:

[0006] A coal seam, wherein the sidewall of the coal seam is provided with multiple grouting holes;

[0007] The grouting gun has a fixing ring at its bottom end and a grout delivery pipe connected to its top end. The end of the grout delivery pipe is equipped with a curtain grout supply unit.

[0008] The sidewall of the fixed ring is arranged in a ring array with multiple fixed frames. The bottom side of the fixed frame is provided with a sliding cavity. The sliding cavity is slidably connected to a movable block. The bottom ends of the multiple movable blocks extend outside the fixed frame and are provided with connecting arms. The bottom side of the multiple connecting arms relative to one end of the movable block is fixed with a positioning rod facing the grouting gun. The fixed ring is provided with a synchronous moving unit, which is used to drive the multiple movable blocks to move synchronously.

[0009] Preferably, the curtain grout supply unit includes a grout pump located at one end of the grout delivery pipe relative to the grouting gun, and the input end of the grout pump is connected to a grout storage tank via a pipe.

[0010] Preferably, the synchronous moving unit includes an annular cavity disposed within a fixed ring, a support ring rotatably mounted inside the annular cavity, a toothed ring provided on the bottom side of the support ring, and threaded rods rotatably connected to multiple sliding cavities via bearings. The movable block is threadedly connected to the outside of the threaded rods, and one end of each of the multiple threaded rods extends into the annular cavity and is provided with a transmission gear, and the multiple transmission gears mesh with the toothed ring.

[0011] Preferably, the side wall of the fixed ring is rotatably connected to a fixed handle, the output end of which extends into the annular cavity and is provided with a drive gear that meshes with the toothed ring.

[0012] Preferably, the sidewall of the support ring is provided with a plurality of limiting posts, and the inner side of the annular cavity is provided with a limiting groove that matches the limiting posts.

[0013] Preferably, a reinforcing rib is fixed between the fixing frame and the fixing ring.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] By incorporating a fixing ring, multiple sets of fixing frames, movable blocks, connecting arms, and positioning rods on the grouting gun, and with the cooperation of a synchronous moving unit, the grouting gun and its side positioning rods are inserted into the grouting hole. The multiple positioning rods can then be controlled to synchronously retract inwards or expand outwards, allowing them to press against the inner wall of the grouting hole. This, in turn, tightly restricts the fixing ring at the grouting hole, thus supporting and fixing the grouting gun and preventing it from moving away. This greatly ensures the stability of the grouting gun and results in good performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the fixing ring and the grouting gun of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the fixing ring and fixing frame of this utility model;

[0020] Figure 4 This is a cross-sectional view of the fixing ring of this utility model;

[0021] Figure 5 This is a schematic diagram of the support ring structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Coal seam; 2. Grouting hole; 3. Grouting gun; 4. Grout delivery pipe; 5. Fixing ring; 6. Annular cavity; 7. Fixing frame; 8. Movable block; 9. Connecting arm; 10. Positioning rod; 11. Support ring; 12. Toothed ring; 13. Transmission gear; 14. Threaded rod; 15. Fixing handle; 16. Drive gear; 17. Limiting post; 18. Limiting groove; 19. Grouting pump; 20. Grout storage tank. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figures 1-5 The shown is a curtain grouting assembly for water control in coal mines, comprising:

[0026] Coal seam 1, and multiple grouting holes 2 are provided on the sidewall of coal seam 1;

[0027] Grouting gun 3, with a fixing ring 5 at the bottom and a grout delivery pipe 4 connected to the top of the grouting gun 3, and a curtain grout supply unit at the end of the grout delivery pipe 4.

[0028] The curtain grouting unit includes a grout pump 19 located at one end of the grout delivery pipe 4 relative to the grouting gun 3, and the input end of the grout pump 19 is connected to a grout storage tank 20 via a pipe.

[0029] By inserting the grouting gun 3 into the grouting hole 2, the grouting pump 19 can draw the grout from the grout storage tank 20 into the grout delivery pipe 4, and then spray it into the grouting hole 2 by the grouting gun 3 to fill the cracks or pores and form a waterproof curtain.

[0030] The sidewall of the fixed ring 5 is provided with multiple fixed frames 7 in a ring array. The bottom side of the fixed frame 7 is provided with a sliding cavity. The sliding cavity is slidably connected to a movable block 8. The bottom ends of the multiple movable blocks 8 extend outside the fixed frame 7 and are provided with connecting arms 9. The bottom side of the multiple connecting arms 9 relative to one end of the movable block 8 is fixed with a positioning rod 10 facing the grouting gun 3. The fixed ring 5 is provided with a synchronous moving unit, which is used to drive the multiple movable blocks 8 to move synchronously.

[0031] The synchronous moving unit includes an annular cavity 6 located within a fixed ring 5. A support ring 11 is rotatably mounted inside the annular cavity 6. A toothed ring 12 is provided on the bottom side of the support ring 11. Threaded rods 14 are rotatably connected to multiple sliding cavities via bearings. A movable block 8 is threadedly connected to the outside of the threaded rods 14. One end of each threaded rod 14 extends into the annular cavity 6 and is provided with a transmission gear 13. All transmission gears 13 mesh with the toothed ring 12.

[0032] The side wall of the fixed ring 5 is rotatably connected to a fixed handle 15. The output end of the fixed handle 15 extends into the annular cavity 6 and is provided with a drive gear 16 that meshes with the toothed ring 12.

[0033] By inserting the grouting gun 3 and its side positioning rod 10 into the grouting hole 2, and turning the fixing handle 15, the drive gear 16 drives the gear ring 12 to rotate. Then, the gear ring 12 drives the support ring 11 to rotate in the annular cavity 6. After that, the support ring 11 can drive multiple transmission gears 13 to rotate simultaneously through the gear ring 12. Then, the transmission gears 13 drive the threaded rod 14 to rotate, causing the threaded rod 14 to drive the movable block 8 to move within the fixed frame 7. Then, the movable block 8 can drive the positioning rod 10 to move through the connecting arm 9, thereby controlling multiple sets of positioning rods 10 to synchronously retract inward or expand outward, so that multiple sets of positioning rods 10 respectively abut against the inner wall of the grouting hole 2. In this way, the fixing ring 5 can be tightly restricted at the grouting hole 2, thus supporting and fixing the grouting gun 3, preventing the grouting gun 3 from moving away, greatly ensuring the stability of the grouting gun 3, and achieving good results.

[0034] The side wall of the support ring 11 is provided with multiple limiting posts 17, and the inner side of the annular cavity 6 is provided with limiting grooves 18 that match the limiting posts 17. Based on this, by setting the limiting posts 17 and limiting grooves 18, the support ring 11 can be supported and limited, thereby greatly ensuring the stability of the support ring 11 when rotating.

[0035] A reinforcing rib is fixed between the fixed frame 7 and the fixed ring 5. Based on this, the stability of the structure can be greatly enhanced by the reinforcing rib.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A curtain grouting assembly for water control in coal mines, characterized in that, include: A coal seam (1), wherein the sidewall of the coal seam (1) is provided with a plurality of grouting holes (2); Grouting gun (3), the bottom end of which is provided with a fixing ring (5), and the top end of which is connected with a grout delivery pipe (4), and the end of which is provided with a curtain grout supply unit; The sidewall of the fixed ring (5) is provided with a plurality of fixed frames (7) arranged in a ring array. The bottom side of the fixed frame (7) is provided with a sliding cavity. The sliding cavity is slidably connected with a movable block (8). The bottom ends of the plurality of movable blocks (8) extend to the outside of the fixed frame (7) and are provided with connecting arms (9). The bottom side of the plurality of connecting arms (9) relative to one end of the movable block (8) is fixed with a positioning rod (10) facing the grouting gun (3). The fixed ring (5) is provided with a synchronous moving unit, and the synchronous moving unit is used to drive the plurality of movable blocks (8) to move synchronously.

2. The curtain grouting assembly for water prevention and control in coal mines according to claim 1, characterized in that: The curtain grouting unit includes a grout pump (19) located at one end of the grout delivery pipe (4) relative to the grouting gun (3), and the input end of the grout pump (19) is connected to a grout storage tank (20) via a pipe.

3. The curtain grouting assembly for water prevention and control in coal mines according to claim 1, characterized in that: The synchronous moving unit includes an annular cavity (6) located within a fixed ring (5). A support ring (11) is rotatably mounted inside the annular cavity (6). A toothed ring (12) is provided on the bottom side of the support ring (11). Threaded rods (14) are rotatably connected to multiple sliding cavities via bearings. The movable block (8) is threadedly connected to the outside of the threaded rods (14). One end of each of the multiple threaded rods (14) extends into the annular cavity (6) and is provided with a transmission gear (13). Each of the multiple transmission gears (13) meshes with the toothed ring (12).

4. The curtain grouting assembly for water prevention and control in coal mines according to claim 3, characterized in that: The side wall of the fixed ring (5) is rotatably connected to a fixed handle (15), the output end of which extends into the annular cavity (6) and is provided with a drive gear (16) that meshes with the toothed ring (12).

5. The curtain grouting assembly for water prevention and control in coal mines according to claim 3, characterized in that: The side wall of the support ring (11) is provided with a plurality of limiting posts (17), and the inner side of the annular cavity (6) is provided with a limiting groove (18) that matches the limiting posts (17).

6. The curtain grouting assembly for water prevention and control in coal mines according to claim 1, characterized in that: A reinforcing rib is fixed between the fixed frame (7) and the fixed ring (5).

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