A flexible wall roof supporting device for a recovery roadway

Abstract

The utility model discloses a kind of for stoping roadway flexible mould wall top connection supporting device, applied in coal mining field, including top connection flexible mould, the bottom of top connection flexible mould is provided with bottom flexible mould;The utility model passes through moving slide cylinder, slide cylinder moves and makes triangular groove move, triangular groove moves and makes clamping rod be separated from clamping groove under the action of second spring, the mode of taking down injection pump head, can reach the purpose of being convenient to assemble and disassemble, reduces workload, improves the efficiency of work, the utility model passes through when injection, filler has certain pressure, will push away baffle, filler normally enters inside flexible mould, when injection pipe and injection pump head accidentally separate, external pressure disappears, telescopic link drives baffle and blocks injection pipe under the action of tension spring, prevent filler from flowing out, to ensure the stability of injection, simultaneously when disassembling injection pump head, injection pipe is blocked automatically, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of coal mining, and in particular to a flexible formwork wall roof support device for longwall mining roadways. Background Technology

[0002] As a core technology for pillarless mining in coal mines, gob-side retaining technology can effectively eliminate the need for coal pillars in roadways, improve coal resource recovery rates, reduce roadway excavation work, and lower mine production costs. It is also of great significance for the proactive, comprehensive, and source-based management of major mine disasters such as water, fire, gas, and mine earthquakes. Flexible formwork wall support, due to its combination of flexibility to adapt to surrounding rock deformation and rigid support capabilities, has become the mainstream form of gob-side retaining support.

[0003] A search of Chinese patents revealed CN220791301U, which discloses a support system for filling and supporting goaf-side retaining roadways in underground coal mines. This system mainly consists of end supports, transition supports, intermediate supports, unit supports, unit support transport vehicles, and rock-blocking supports. The end supports are located at both ends of the working face. The end supports, transition supports, and intermediate supports are connected to a scraper conveyor via support push rods. An auxiliary pushing jack for connection to the scraper conveyor is installed on the outermost end support at the retaining end. The rock-blocking support is located behind the end supports at the retaining end and moves by stepping using a bottom-lifting cylinder and a rock-blocking pushing cylinder. It is located on one side of the flexible mold wall. Unit supports are arranged on the other side of the flexible mold wall to suspend the flexible mold bag. The unit support transport vehicle is used to move the unit supports. This system solves the problems of high labor intensity, low efficiency, poor safety, and poor flexible mold wall forming effect in existing goaf-side retaining technologies.

[0004] Existing flexible formwork wall-to-roof support devices are inconvenient to install and disassemble. Generally, the wall-to-roof support device is connected to the injection pump head through an injection pipe for injection. However, the injection pipe and the injection pump head are fixed with bolts. When installing and disassembling them, tools are required, which is quite troublesome, increases the workload, and reduces the efficiency of the work. In order to solve the above problems, we propose a flexible formwork wall-to-roof support device for mining roadways. Utility Model Content

[0005] The purpose of this invention is to provide a flexible formwork wall roof support device for longwall mining roadways, which has the advantage of being easy to assemble and disassemble.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a flexible formwork wall roof support device for a mining roadway, comprising a roof support flexible formwork, a bottom flexible formwork at the bottom of the roof support flexible formwork, a connecting mechanism between the bottom flexible formwork and the roof support flexible formwork, injection pipes on the surfaces of both the bottom flexible formwork and the roof support flexible formwork, an injection pump head slidably sleeved on the inner wall of the injection pipe, a slide cylinder slidably sleeved on the surface of the injection pipe, a limit ring fixedly sleeved on the inner wall of the slide cylinder, a first spring between the limit ring and the inner wall of the injection pipe, a triangular groove on the inner wall of the slide cylinder, a snap-fit ​​rod slidably sleeved on the inner wall of the injection pipe, a second spring sleeved on the surface of the snap-fit ​​rod, a snap-fit ​​groove on the surface of the injection pump head, and the snap-fit ​​groove snaps into one end of the snap-fit ​​rod.

[0007] By adopting the above technical solution, the sliding cylinder moves, causing the triangular groove to move. The movement of the triangular groove causes the locking rod to disengage from the locking groove under the action of the second spring, thus removing the injection pump head. This method facilitates assembly and disassembly, reduces workload, and improves work efficiency.

[0008] The present invention is further configured such that: a fixing frame is bolted to the inner wall of the injection tube, a fixing rod is bolted to the surface of the fixing frame, a telescopic rod is slidably sleeved on the inner wall of the fixing rod, a tension spring is provided between one end of the telescopic rod and the inner wall of the fixing rod, and a blocking plate is bolted to one end of the telescopic rod, and the blocking plate is located outside the injection tube.

[0009] By adopting the above technical solution, the filler material has a certain pressure during injection, which pushes the blocking plate open, allowing the filler material to enter the flexible mold normally. When the injection tube and injection pump head accidentally detach, the external pressure disappears, and the telescopic rod, under the action of the tension spring, drives the blocking plate to block the injection tube, preventing the filler material from flowing out, thereby ensuring the stability of injection. At the same time, when disassembling the injection pump head, the injection tube is automatically blocked, making it convenient to use.

[0010] The present invention is further configured such that: the connecting mechanism includes a fixed base, the fixed base is bolted to the surface of the top flexible mold and the bottom flexible mold, the surface of the bottom flexible mold and the top flexible mold are bolted to the insert plate, and the insert plate is inserted into the inner wall of the fixed base, the inner wall of the fixed base and the insert plate is provided with a fixing bolt, and the surface of the fixing bolt is threaded with a nut.

[0011] By adopting the above technical solution, a connecting structure is set up to insert the insert plate into the fixing seat, and then the fixing bolts are passed through the fixing seat and the insert plate. The fixing bolts are fixed with nuts. The flexible mold modular design can be prefabricated on the ground and installed in the well, which facilitates transportation and improves practicality.

[0012] The present invention is further configured such that: the inner walls of the top flexible mold and the bottom flexible mold are bolted with a steel mesh, and the steel mesh is fixedly sleeved with the injection pipe, and the inner wall of the steel mesh is welded with a tie rod.

[0013] By adopting the above technical solution, the flexible formwork is strengthened by setting steel mesh and tie bars to prevent collapse during grouting and to improve the strength of the flexible formwork wall.

[0014] The present invention is further provided that the surface of the slide tube is provided with anti-slip texture.

[0015] By adopting the above technical solution, anti-slip texture is set to prevent hand slippage and facilitate operation.

[0016] The present invention is further configured such that a first sealing gasket is provided between the injection pump head and the inner wall of the injection pipe.

[0017] By adopting the above technical solution, a first sealing gasket is set to prevent grout leakage.

[0018] The present invention is further configured such that a second sealing gasket is embedded in the surface of the blocking plate.

[0019] By adopting the above technical solution, a second sealing gasket is installed to prevent grout leakage and ensure stability.

[0020] The present invention is further configured such that the surfaces of the top flexible mold and the bottom flexible mold are both sewn with fixing ears.

[0021] By adopting the above technical solution, the fixed ears facilitate the fixation of the flexible mold.

[0022] In summary, this utility model has the following beneficial effects: 1. This utility model achieves the purpose of easy assembly and disassembly by moving the sliding cylinder, which causes the triangular groove to move, and the movement of the triangular groove causes the locking rod to disengage from the locking groove under the action of the second spring, thereby removing the injection pump head. This reduces the workload and improves the efficiency of work. 2. This utility model utilizes the principle that during injection, the filler material, under certain pressure, pushes open the blocking plate, allowing the filler material to enter the flexible mold normally. When the injection tube and injection pump head accidentally detach, the external pressure disappears, and the telescopic rod, under the action of the tension spring, drives the blocking plate to block the injection tube, preventing the filler material from flowing out, thereby ensuring stable injection. At the same time, when disassembling the injection pump head, the injection tube is automatically blocked, making it convenient to use. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is a partial structural side sectional view of the present invention; Figure 3This is a cross-sectional view of the structure of this utility model; Figure 4 This is a side sectional view of the connecting mechanism structure of this utility model; Figure 5 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0024] Reference numerals: 1. Top flexible mold; 2. Bottom flexible mold; 3. Connecting mechanism; 4. Injection pipe; 5. Injection pump head; 6. Slide cylinder; 7. Limiting ring; 8. First spring; 9. Triangular groove; 10. Snap-fit ​​rod; 11. Second spring; 12. Snap-fit ​​groove; 13. Fixing frame; 14. Fixing rod; 15. Telescopic rod; 16. Tension spring; 17. Blocking plate; 18. Fixing seat; 19. Insert plate; 20. Fixing bolt; 21. Nut; 22. Reinforcing mesh; 23. Tie rod; 24. Anti-slip texture; 25. First sealing gasket; 26. Second sealing gasket; 27. Fixing ear. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings. Example

[0026] refer to Figure 1 , Figure 2 and Figure 5 A flexible formwork wall roof support device for a mining roadway includes a roof support flexible formwork 1, a bottom flexible formwork 2 at the bottom of the roof support flexible formwork 1, a connecting mechanism 3 between the bottom flexible formwork 2 and the roof support flexible formwork 1, injection pipes 4 on the surfaces of both the bottom flexible formwork 2 and the roof support flexible formwork 1, an injection pump head 5 slidably sleeved on the inner wall of the injection pipe 4, a slide cylinder 6 slidably sleeved on the surface of the injection pipe 4, a limit ring 7 fixedly sleeved on the inner wall of the slide cylinder 6, a first spring 8 between the limit ring 7 and the inner wall of the injection pipe 4, and an opening in the inner wall of the slide cylinder 6. The triangular groove 9 and the inner wall of the injection pipe 4 are slidably fitted with a snap-fit ​​rod 10. A second spring 11 is fitted on the surface of the snap-fit ​​rod 10. A snap-fit ​​groove 12 is opened on the surface of the injection pump head 5, and the snap-fit ​​groove 12 is snapped with one end of the snap-fit ​​rod 10. By moving the slide cylinder 6, the movement of the slide cylinder 6 causes the triangular groove 9 to move. The movement of the triangular groove 9 causes the snap-fit ​​rod 10 to disengage from the snap-fit ​​groove 12 under the action of the second spring 11. The injection pump head 5 can be removed in this way, which can facilitate assembly and disassembly, reduce workload, and improve work efficiency.

[0027] refer to Figure 3 and Figure 4The connecting mechanism 3 includes a fixed base 18, which is bolted to the surfaces of the top flexible mold 1 and the bottom flexible mold 2. The surfaces of the bottom flexible mold 2 and the top flexible mold 1 are bolted to insert plates 19, which are inserted into the inner wall of the fixed base 18. Fixing bolts 20 are provided through the inner walls of the fixed base 18 and the insert plates 19. Nuts 21 are threaded onto the surface of the fixing bolts 20. By setting the connecting structure, the insert plates 19 are inserted into the fixed base 18, and then the fixing bolts 20 are passed through the fixed base 18 and the insert plates 19. The nuts 21 are used to fix the fixing bolts 20. The modular design of the flexible mold allows it to be prefabricated on the ground and installed in the well, which is convenient for transportation and improves its practicality.

[0028] refer to Figure 5 The surface of the slide cylinder 6 is provided with anti-slip texture 24. By setting the anti-slip texture 24, the hand slips and the operation is facilitated.

[0029] refer to Figure 5 A first sealing gasket 25 is provided between the injection pump head 5 and the inner wall of the injection pipe 4 to prevent slurry leakage. Example

[0030] refer to Figure 2 and Figure 5 The inner wall of the injection tube 4 is bolted with a fixing bracket 13, and the surface of the fixing bracket 13 is bolted with a fixing rod 14. The inner wall of the fixing rod 14 is slidably fitted with a telescopic rod 15. A tension spring 16 is provided between one end of the telescopic rod 15 and the inner wall of the fixing rod 14. One end of the telescopic rod 15 is bolted with a blocking plate 17, and the blocking plate 17 is located outside the injection tube 4. When the filler has a certain pressure during injection, it will push the blocking plate 17 open, and the filler will enter the flexible mold normally. When the injection tube 4 and the injection pump head 5 are accidentally separated, the external pressure disappears, and the telescopic rod 15 drives the blocking plate 17 under the action of the tension spring 16 to block the injection tube 4, preventing the filler from flowing out, thereby ensuring the stability of the injection. At the same time, when the injection pump head 5 is disassembled, the injection tube 4 is automatically blocked, which is convenient for use.

[0031] refer to Figure 2 The inner walls of the top flexible mold 1 and the bottom flexible mold 2 are bolted with steel mesh 22, and the steel mesh 22 is fixedly sleeved with the injection pipe 4. The inner wall of the steel mesh 22 is welded with tie rods 23. By setting the steel mesh 22 and tie rods 23, the flexible mold is strengthened to prevent collapse during grouting and to improve the strength of the flexible mold wall.

[0032] refer to Figure 5 The surface of the blocking plate 17 is embedded with a second sealing gasket 26. By setting the second sealing gasket 26, grout leakage is prevented and stability is ensured.

[0033] refer to Figure 1 and Figure 3Both the top flexible mold 1 and the bottom flexible mold 2 are sewn with fixing ears 27. The fixing ears 27 facilitate the fixing of the flexible mold.

[0034] Brief description of the usage process: Move the slide cylinder 6. The movement of the slide cylinder 6 causes the triangular groove 9 to move. The movement of the triangular groove 9 causes the locking rod 10 to disengage from the locking groove 12 under the action of the second spring 11. Remove the injection pump head 5. During installation, insert the injection pump head 5 into the injection pipe 4. Release the slide cylinder 6. The slide cylinder 6, under the action of the second spring 11, drives the limit ring 7 to reset the slide cylinder 6. The reset of the slide cylinder 6 resets the triangular groove 9. The reset of the triangular groove 9 causes the locking rod 10 to engage with the locking groove 12. The pump head 5 is fixed, completing the installation and facilitating assembly and disassembly. During injection, the filler material has a certain pressure, which pushes open the blocking plate 17, allowing the filler material to enter the flexible mold normally. When the injection tube 4 and the injection pump head 5 accidentally separate, the external pressure disappears, and the telescopic rod 15, under the action of the tension spring 16, drives the blocking plate 17 to block the injection tube 4, preventing the filler material from flowing out and ensuring stable injection. At the same time, when disassembling the injection pump head 5, the injection tube 4 is automatically blocked for convenient use.

[0035] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A roof support device for flexible formwork walls in longwall mining roadways, comprising a roof support flexible formwork (1), characterized in that, The bottom of the top flexible mold (1) is provided with a bottom flexible mold (2), and a connecting mechanism (3) is provided between the bottom flexible mold (2) and the top flexible mold (1). The surfaces of the bottom flexible mold (2) and the top flexible mold (1) are provided with injection tubes (4). The inner wall of the injection tube (4) is slidably sleeved with an injection pump head (5). The surface of the injection tube (4) is slidably sleeved with a slide cylinder (6). The inner wall of the slide cylinder (6) is fixedly sleeved with a limit ring (7). A first spring (8) is provided between the limit ring (7) and the inner wall of the injection tube (4). The inner wall of the slide cylinder (6) is provided with a triangular groove (9). The inner wall of the injection tube (4) is slidably sleeved with a snap-fit ​​rod (10). The surface of the snap-fit ​​rod (10) is sleeved with a second spring (11). The surface of the injection pump head (5) is provided with a snap-fit ​​groove (12), and the snap-fit ​​groove (12) is snapped with one end of the snap-fit ​​rod (10).

2. The flexible formwork wall roof support device for longwall mining roadways according to claim 1, characterized in that, The inner wall of the injection tube (4) is bolted with a fixing frame (13), and the surface of the fixing frame (13) is bolted with a fixing rod (14). The inner wall of the fixing rod (14) is slidably sleeved with a telescopic rod (15). A tension spring (16) is provided between one end of the telescopic rod (15) and the inner wall of the fixing rod (14). One end of the telescopic rod (15) is bolted with a blocking plate (17), and the blocking plate (17) is located outside the injection tube (4).

3. The flexible formwork wall roof support device for longwall mining roadways according to claim 1, characterized in that, The connecting mechanism (3) includes a fixed seat (18), which is bolted to the surface of the top flexible mold (1) and the bottom flexible mold (2). The surfaces of the bottom flexible mold (2) and the top flexible mold (1) are bolted to insert plates (19), and the insert plates (19) are inserted into the inner wall of the fixed seat (18). The inner walls of the fixed seat (18) and the insert plates (19) are provided with fixing bolts (20), and the surface of the fixing bolts (20) is threaded with nuts (21).

4. A flexible formwork wall roof support device for longwall mining roadways according to claim 1, characterized in that, The inner walls of the top flexible mold (1) and the bottom flexible mold (2) are bolted with steel mesh (22), and the steel mesh (22) is fixedly sleeved with the injection pipe (4). The inner wall of the steel mesh (22) is welded with tie rods (23).

5. A flexible formwork wall roof support device for longwall mining roadways according to claim 1, characterized in that, The surface of the slide (6) is provided with anti-slip texture (24).

6. A roof support device for flexible formwork walls in longwall mining roadways according to claim 1, characterized in that, A first sealing gasket (25) is provided between the injection pump head (5) and the inner wall of the injection pipe (4).

7. A flexible formwork wall roof support device for longwall mining roadways according to claim 2, characterized in that, The surface of the blocking plate (17) is embedded with a second sealing gasket (26).

8. A flexible formwork wall roof support device for longwall mining roadways according to claim 1, characterized in that, The surfaces of the top flexible mold (1) and the bottom flexible mold (2) are both sewn with fixing ears (27).

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