A device for plugging roof fissures in a tunnel

Abstract

The utility model relates to the roadway construction technical field, concretely is a kind of tunneling roadway top fissure plugging device, including grouting pump, the grouting pump's slurry pipe is rotationally connected with three-way pipe, two grouting pipes are connected on the three-way pipe, support is arranged between two grouting pipes, the support includes crossbeam, the bottom of the crossbeam is fixed with double-head air cylinder, the both ends of double-head air cylinder are rotationally connected with telescopic assembly, one end of telescopic assembly is rotationally connected with mounting pipe.In the utility model, the distance between two grouting pipes can be adjusted by double-head air cylinder and two telescopic assemblies, so that two grouting pipes can be inserted into two grouting holes simultaneously. By extending or shortening the output end of the double-head air cylinder, each grouting pipe can be fixed in the grouting hole. This design facilitates the installation of grouting pipes and allows two grouting pipes to perform single grouting and crack sealing at different positions, thereby improving the efficiency of roadway crack sealing.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically a device for sealing cracks at the top of a tunnel. Background Technology

[0002] Tunneling refers to the passage excavated in underground engineering projects such as mining and tunnel construction to meet the needs of transportation, ventilation, and personnel passage. When cracks appear in the top of the tunnel, grouting pumps and grouting pipes are used to seal the cracks. Currently, for cracks that are narrow (e.g., less than 0.5 mm) and deep, grouting is usually required from the surrounding rock layers to seal the cracks. The specific method is to drill holes on both sides or around the crack, insert grouting pipes into the holes, and then inject grout into the rock layers through a grouting pump, so that the grout penetrates into the crack under pressure to seal the crack. For low-profile ventilation roadways, supports are usually installed at the bottom of the grouting pipe to stabilize it and prevent it from falling out of the borehole during grouting. However, for high-profile transport roadways, installing supports requires more materials and manpower, increasing the difficulty and complexity of construction. Furthermore, traditional crack sealing devices only have a single grouting pipe on the grouting pump, which is not conducive to further improving the efficiency of crack sealing. Utility Model Content

[0003] The purpose of this invention is to provide a device for sealing cracks at the top of tunnels to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A device for sealing cracks at the top of a tunnel includes an existing grouting pump. A tee pipe is rotatably connected to the grout delivery pipe of the grouting pump. Two grouting pipes are connected to the tee pipe. A flexible hose is fixedly connected to the bottom end of the grouting pipe. The flexible hose is fixedly connected to the discharge end of the tee pipe. A bracket is provided between the two grouting pipes, which can simultaneously install and fix the two grouting pipes inside the grouting hole. The bracket includes a crossbeam, and a double-headed cylinder is fixed at the bottom of the crossbeam. Both output ends of the double-headed cylinder are rotatably connected to telescopic components. Guide blocks that are slidably connected to the corresponding telescopic components can be detachably installed at both ends of the crossbeam. An installation pipe is rotatably connected to one end of the telescopic component, and the grouting pipe is installed at one end of the installation pipe.

[0005] Furthermore, the bottom of the three-way pipe is rotatably connected to a connecting pipe, and the connecting pipe is connected and fixed to the slurry delivery pipe.

[0006] Furthermore, two valves are connected in series on the three-way pipe, and the valves are used to control whether the slurry inside the three-way pipe can be delivered into the hose.

[0007] Furthermore, a handle is fixed to the top of the crossbeam for easy hand gripping, and a rubber sleeve is fitted onto the outside of the handle.

[0008] Furthermore, the telescopic assembly includes a sleeve rotatably connected to the mounting tube, and one end of the sleeve is screwed onto a screw rotatably connected to the output end of the double-headed cylinder.

[0009] Furthermore, one end of the installation pipe is fixed with a connecting seat, and the connecting seat is sleeved and fixed to the grouting pipe.

[0010] Preferably, one end of the installation pipe is fixed with a C-shaped seat, and a rotating block is fixed on the outside of the grouting pipe. The rotating block is rotatably engaged with the C-shaped seat, and a bolt is screwed into and inserted between the C-shaped seat and the rotating block.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By fixing a double-headed cylinder at the bottom of the crossbeam, and rotatably mounting telescopic components at both output ends of the double-headed cylinder, with a grouting pipe rotatably mounted at one end of each telescopic component, the length of the telescopic components and the extension of the two output ends of the double-headed cylinder are pre-adjusted so that the two grouting pipes can be simultaneously inserted into adjacent pre-drilled grouting holes at the top of the roadway. Then, the output ends of the double-headed cylinder are extended or retracted again, so that the telescopic components tend to drive the grouting pipes against the inner wall of the grouting hole, thereby allowing the two grouting pipes to simultaneously abut and be fixed inside the grouting hole for grouting. Even when the roadway is high, the grouting pipes can still be fixed with brackets after simply inserting them into the grouting hole, eliminating the need for traditional brackets of different heights to support the grouting pipes separately, and improving the convenience of fixing the grouting pipes to the grouting hole.

[0012] The bracket allows two grouting pipes to be installed into two grouting holes simultaneously. Then, the grouting pump can deliver grout to the two grouting pipes one after the other, thereby continuously injecting grout into multiple grouting holes to seal cracks in the roadway. Compared with the traditional method of using a single grouting pipe to seal cracks, this method helps to improve the efficiency of sealing cracks in tunneling roadways.

[0013] Because the expansion joint and the grouting pipe are rotatably installed, the two grouting pipes arranged opposite each other can be rotated out of position, allowing them to rotate to the left and right at appropriate angles. This enables the two grouting pipes to be installed into two adjacent grouting holes with different left and right opening directions, facilitating simultaneous grouting and sealing of cracks in two adjacent grouting holes with different left and right opening directions. Alternatively, the grouting pipes can be rotatably installed at the end of the expansion joint via a U-shaped seat. The grouting pipes can be pre-adjusted by rotating them back and forth on the U-shaped seat, and then bolts can be used to fix the adjusted grouting pipes inside the U-shaped seat. This allows the two grouting pipes to be installed into two adjacent grouting holes with different front and back opening directions, facilitating simultaneous grouting and sealing of cracks in two adjacent grouting holes with different front and back opening directions. This makes the sealing device applicable to grouting holes with different opening directions, helping to improve the versatility of the sealing device for grouting and sealing cracks. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the grouting pipe and support structure in this utility model; Figure 3 This is a schematic diagram of the support structure in this utility model; Figure 4 This is a schematic diagram of the sliding connection structure between the screw and the guide block in this utility model; Figure 5 This is a simplified diagram of the grouting structure at the top of the tunnel in this utility model; Figure 6 This is a schematic diagram of the telescopic component, the C-shaped seat, and the grouting pipe in this utility model.

[0015] In the diagram: 100, grouting pump; 110, tee pipe; 111, connecting pipe; 112, valve; 200, grouting pipe; 210, hose; 300, bracket; 310, crossbeam; 320, double-headed cylinder; 321, rotating slot; 330, telescopic assembly; 331, sleeve; 332, screw; 3321, rotating column; 340, guide block; 350, mounting pipe; 351, connecting seat; 352, C-shaped seat; 3521, bolt; 360, handle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1, please refer to Figure 1 - Figure 6 In this embodiment of the utility model, a crack sealing device for the top of a tunnel includes a grouting pump 100. A three-way pipe 110 is rotatably connected to the grout delivery pipe of the grouting pump 100. Two grouting pipes 200 are connected to the three-way pipe 110. A flexible hose 210 is fixedly connected to the bottom of the grouting pipe 200. The flexible hose 210 is fixedly connected to the grout outlet end of the three-way pipe 110. A support 300 is provided between the two grouting pipes 200. The support 300 is used to support and fix the two grouting pipes inside the grouting hole. The support 300 includes a crossbeam 310. A double-headed cylinder 320 is fixed to the bottom of the crossbeam 310. Both output ends of the double-headed cylinder 320 are rotatably connected to telescopic components 330. Both ends of the crossbeam 310 are detachably installed with guide blocks 340 that are slidably connected to the telescopic components 330 at the corresponding positions. One end of the telescopic component 330 is rotatably connected to an installation pipe 350. The grouting pipe 200 is installed at one end of the installation pipe 350.

[0018] Specifically, by designing the traditional support 300 as a double-headed cylinder 320 and two telescopic components 330, with a grouting pipe 200 installed at one end of each telescopic component 330, the combination of the double-headed cylinder 320 and the two telescopic components 330 can adjust the distance between the two grouting pipes 200, allowing them to be inserted into two pre-drilled grouting holes simultaneously. Then, by extending or shortening the output end of the double-headed cylinder 320, the grouting pipes 200 at both ends of the support 300 can move in opposite directions or closer directions, thus automatically abutting and fixing each grouting pipe 200 inside the grouting hole. This eliminates the need for the traditional use of complex support materials to support the grouting pipes 200, improving the ease of installation. At the same time, the two grouting pipes 200 can sequentially grout and seal cracks at different locations in a single operation, helping to improve the efficiency of crack sealing in tunnels.

[0019] like Figure 1 As shown, in this embodiment, the bottom of the three-way pipe 110 is rotatably connected to the connecting pipe 111. The connecting pipe 111 is connected and fixed to the grout delivery pipe on the grouting pump 100. When the two grouting pipes 200 are inserted into the grouting holes at different positions, the rotating bracket 300 adjusts the position of the two grouting pipes 200, which will cause the two hoses 210 to twist. The hoses 210 will rotate on the connecting pipe 111 with the three-way pipe 110, effectively preventing the grout delivery pipe from twisting. The grouting pump 100 is a prior art device, and the working principle of pumping grout will not be described in detail.

[0020] In this embodiment, two valves 112 are connected in series on the three-way pipe 110. The specific valve type can be an existing component clamp valve. The valves 112 are used to control whether the slurry inside the three-way pipe 110 can be delivered into the hose 210. In the initial state, the two valves 112 can be kept in an open and closed state to facilitate the concentrated pressure of the slurry into the grouting hole. Later, after the slurry has been injected into both grouting holes, the two valves 112 can be opened at the same time to facilitate the secondary replenishment of slurry to the two grouting holes at the same time.

[0021] like Figure 2 As shown, in this embodiment, a handle 360 ​​is fixed to the top of the crossbeam 310 for easy hand holding by the user. A rubber sleeve is fixed to the outside of the handle 360. The user can pick up the bracket 300 by holding the handle 360 ​​and then insert the grouting pipe 200 into the grouting hole to be grouted.

[0022] like Figure 3 , Figure 4 and Figure 6 As shown, in this embodiment, the telescopic component 330 includes a sleeve 331 rotatably connected to the mounting tube 350. One end of the sleeve 331 is screwed to a screw 332. One end of the screw 332 is fixed to a rotating block. The end of the screw 332 near the rotating block is fixed to a rotating column 3321. The output end of the double-headed cylinder 320 is provided with a rotating hole groove 321 that is rotatably installed with the rotating column 3321.

[0023] In this embodiment, when it is necessary to adjust the length of the telescopic component 330 to increase the distance between the two grouting pipes 200 in advance, one hand can hold the sleeve 331 and the other hand can rotate the rotating block to make the screw 332 rotate out of the sleeve 331. Conversely, rotating the screw 332 in the opposite direction can retract it into the sleeve 331, thereby shortening the telescopic component 330.

[0024] like Figure 4 As shown, in this embodiment, a stud 332 passing through the crossbeam 310 is fixed to the top of the guide block 340, and a nut is screwed onto the top of the stud 332, so that the guide block 340 can be detachably installed on the crossbeam 310. A round hole is provided on the guide block 340. When the telescopic component 330 is used for length adjustment, a guide block 340 with a round hole that allows the stud 332 to slide through can be pre-installed on the crossbeam 310. When the telescopic component 330 is used for length adjustment, a guide block 340 with a round hole that allows the sleeve 331 to slide through can be pre-installed on the crossbeam 310. The specific selection of the guide block 340 is selected according to the usage. The guide block 340 helps to improve the stability of the fine-tuning length of the telescopic component 330.

[0025] like Figure 2 and Figure 3As shown, in this embodiment, a connecting seat 351 is fixed to one end of the installation pipe 350. The connecting seat 351 is sleeved and fixed to the grouting pipe 200. At this time, the grouting pipe 200 can rotate on the sleeve 331 through the installation pipe 350, so that the grouting pipe 200 can be adjusted left and right to adjust its position. The specific orientation is shown in the figure. Figure 5 This allows two adjacent grouting pipes 200 to grout in the same direction or to grout at different angles in the left and right directions.

[0026] like Figure 5 and Figure 6 As shown, in this embodiment, one end of the mounting pipe 350 can also be fixed with a C-shaped seat 352. A rotating block is fixed on the outside of the grouting pipe 200. The rotating block is rotatably engaged with the C-shaped seat 352. A bolt 3521 is screwed and inserted between the C-shaped seat 352 and the rotating block. At this time, the two grouting pipes 200 can be pre-adjusted by rotating them back and forth. It should be noted that when the two grouting pipes 200 are adjusted to an inclined position, during the process of inserting the two grouting pipes 200 into the grouting hole at the same time using the bracket 300, the output end of the double-headed cylinder 320 can retract or extend to satisfy the simultaneous insertion of the two inclined grouting pipes 200 into the inclined grouting hole.

[0027] In this embodiment, combined with Figure 4 When the two grouting pipes 200 are inserted into the grouting hole at the same time with their left and right tilts, the connecting seat 351 carries the grouting pipe 200 and rotates on the sleeve 331 through the mounting pipe 350, so that the two left and right tilted grouting pipes 200 can enter the tilted grouting hole. Specifically, whether the grouting pipe 200 is installed at the end of the mounting pipe 350 by the mounting connecting seat 351 or the C-shaped seat 32 depends on the tilt direction of the grouting hole.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for sealing cracks in the roof of a tunnel, characterized in that, include: Grouting pump (100), the grouting pump (100) has a tee pipe (110) rotatably connected to the grout delivery pipe. Two grouting pipes (200) are provided, and a flexible hose (210) is fixedly connected to the bottom end of each grouting pipe (200). The flexible hose (210) is fixedly connected to the discharge end of a three-way pipe (110). A bracket (300) is arranged between two grouting pipes (200) and can simultaneously abut and fix the two grouting pipes inside the grouting holes around the crack. The bracket (300) includes a crossbeam (310), and a double-headed cylinder (320) is fixed at the bottom of the crossbeam (310). Both output ends of the double-headed cylinder (320) are rotatably connected to telescopic components (330). Both ends of the crossbeam (310) can be detachably installed with guide blocks (340) that are slidably connected to the corresponding telescopic components (330). One end of the telescopic component (330) is rotatably connected to an installation pipe (350), and the grouting pipe (200) is installed at one end of the installation pipe (350).

2. The tunnel top fissure sealing device according to claim 1, characterized in that, The bottom of the three-way pipe (110) is rotatably connected to a connecting pipe (111), and the connecting pipe (111) is connected and fixed to the slurry delivery pipe.

3. The tunnel top fissure sealing device according to claim 1, characterized in that, Two valves (112) are connected in series on the three-way pipe (110). The valves (112) are used to control whether the slurry inside the three-way pipe can be delivered to the hose (210).

4. The tunnel top fissure sealing device according to claim 1, characterized in that, The top of the crossbeam (310) is fixed with a handle (360) for easy hand gripping by the user, and a rubber sleeve is fixed to the outside of the handle (360).

5. The tunnel top fissure sealing device according to claim 1, characterized in that, The telescopic assembly (330) includes a sleeve (331) rotatably connected to the mounting tube (350), and one end of the sleeve (331) is screwed to a screw (332) rotatably connected to the output end of the double-headed cylinder (320).

6. The tunnel top fissure sealing device according to claim 1, characterized in that, One end of the installation pipe (350) is fixed with a connecting seat (351), and the connecting seat (351) is sleeved and fixed to the grouting pipe (200).

7. The tunnel top fissure sealing device according to claim 1 or 6, characterized in that, One end of the installation pipe (350) is fixed with a C-shaped seat (352), and a rotating block is fixed on the outside of the grouting pipe (200). The rotating block is rotatably engaged with the C-shaped seat (352), and a bolt (3521) is screwed into the C-shaped seat (352) and the rotating block.

Images