Tunnel lining vault concrete pouring shunting pipe mechanism

Abstract

The utility model discloses a tunnel lining vault concrete pouring shunting pipe mechanism which comprises a grouting pipe installation box body, a grouting pipe and a rotation driving part, the grouting pipe and the rotation driving part are both installed on the grouting pipe installation box body, and the rotation driving part is located on the lower portion of the grouting pipe and provides rotation driving force for the grouting pipe. The upper portion of the grouting pipe extends into a tunnel lining vault, a square flow dividing through opening is formed in the position, close to the top end, of the grouting pipe in a front-back transverse and horizontal penetrating mode, a pipe top plug cover is horizontally installed on a top end opening of the grouting pipe, and a conical flow dividing column is arranged in the middle of the bottom face of the pipe top plug cover downwards. The rotary grouting device has the advantages that the pressure of the grouting outlet is reduced, the pipeline is prevented from being blocked, rotary uniform grouting is realized, the construction period is shortened, and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of pouring diversion, and particularly relates to a concrete pouring diversion pipe mechanism for the arch top of a tunnel lining. Background Technique

[0002] At present, when pouring the lining concrete of a tunnel, the grouting pipe at the arch top of the tunnel lining can only spray out the concrete through the top port. Therefore, a relatively large grouting system pressure is required to send the concrete to the arch top of the tunnel lining. However, if the outlet pressure of the grouting pipe is too large, it is easy to cause the separation and flow of the slurry water and stones in the concrete in the grouting pipe. The slurry water flows faster and thus sprays out faster, while the stones flow slower and stay and accumulate in the grouting pipe, resulting in pipeline blockage. Moreover, the spraying angle of the current grouting pipe is not controlled. When the outlet pressure is too large, the concrete tilts and sprays out randomly to one side under the action of gravity, resulting in uneven slurry inside the tunnel lining and inability to quickly fill the inside of the tunnel lining, and the construction period is long. Summary of the Invention

[0003] The utility model aims to provide a concrete pouring diversion pipe mechanism for the arch top of a tunnel lining, which reduces the grouting outlet pressure, shortens the construction period, and sprays the slurry evenly, and solves the problems of pipeline blockage caused by too large pressure of the current grouting system and long construction period caused by uneven grouting of the grouting pipe.

[0004] To this end, the technical solution adopted by the utility model is as follows: a concrete pouring diversion pipe mechanism for the arch top of a tunnel lining, including a grouting pipe installation box body, a grouting pipe and a rotary driving member both installed on the grouting pipe installation box body. The rotary driving member is located below the grouting pipe and provides a rotary driving force for the grouting pipe. The upper part of the grouting pipe extends into the arch top of the tunnel lining and is horizontally provided with a square diversion opening in the front and back directions near the top end. A pipe top plug is horizontally installed at the top port of the grouting pipe, and a conical diversion column is centrally arranged on the bottom surface of the pipe top plug facing downwards, so as to evenly divert the concrete sprayed up by the grouting pipe along the square diversion opening.

[0005] As a preference of the above solution, the grouting pipe installation box body includes a top cover plate, a right cover plate, an installation bottom table and side plates symmetrically arranged in the front and back. The top cover plate and the installation bottom table are both provided with grouting pipe through holes for the upper and lower ends of the grouting pipe to vertically pass through, and the design structure is reasonable.

[0006] Further preferably, an installation flange is provided at the lower part of the grouting pipe, and a pipe joint capable of being butted with a 45° bent pipe is provided at the bottom end of the grouting pipe, so as to be flexibly butted with the concrete conveying pipeline. The rotary driving member includes a rotary support seat with an outer ring threadedly connected to the installation flange and a gear type reducer for providing a rotary driving force for the rotary support seat. A driving thread installation hole threadedly connected to the inner ring of the rotary support seat is provided around the grouting pipe through hole of the installation bottom table. When the gear type reducer is started, the grouting pipe is driven to rotate by the rotary support seat, and the design structure is reasonable.

[0007] Further preferably, the right cover plate is provided with an opening for the gear reducer to be exposed, avoiding the narrow internal space of the grouting pipe installation box where the gear reducer cannot be installed, and making reasonable use of the space.

[0008] Further preferably, the side plate is provided with a through hole corresponding to the output main shaft of the rotary drive member, and is equipped with a manual rocker spare tool that can pass through the through hole to manually rotate the output main shaft of the rotary drive member. When the gear reducer cannot be used, manual control can be carried out through the manual rocker spare tool. An observation window is provided in the upper middle part of the side plate, and the design is reasonable.

[0009] Further preferably, a monitoring device is buckled and installed on the top of the grouting pipe. The grouting pipe is symmetrically provided with cable placement grooves in a long strip shape along the outer wall of the pipe body on the left and right for placing the cables from the monitoring device, ensuring the overall aesthetics, neat wire harness storage, and reducing the potential safety hazards of wire entanglement.

[0010] Further preferably, the bottom of the cable placement groove is connected with a cable pipe that bends vertically downward and passes through the installation flange to lead the cable out of the grouting pipe installation box. The design is reasonable and avoids wire accumulation.

[0011] Further preferably, both the driving main gear and the driven gear are bevel gears, and the structure is reasonable.

[0012] The beneficial effects of the present utility model are as follows:

[0013] (1) Compared with the situation where the pipeline is blocked due to excessive pressure in the grouting system, in this solution, a square shunt through hole is horizontally penetrated in the front and back directions near the top of the grouting pipe, thereby increasing the concrete outlet area, effectively reducing the required outlet pressure. The upper part of the grouting pipe extends into the arch crown of the tunnel lining, which can also reduce the required outlet pressure. It can uniformly reduce the system pressure of grouting by 5 MPa, effectively avoiding the separation of slurry and gravel and the resulting flow, where the slurry flow rate is faster and thus sprays out faster, while the gravel flow rate is slower and stays and accumulates in the grouting pipe, causing pipeline blockage. The concept is ingenious and the design is novel.

[0014] (2) Compared with the uneven grouting of the grouting pipe at the arch crown of the current tunnel lining, in this solution, a rotary drive member is added at the lower part of the grouting pipe to provide a rotational driving force to drive the rotation of the grouting pipe, thereby realizing rotary uniform pouring, effectively solving the problem of long pouring time cycles caused by pouring only one side and then flowing to fill the other side. The automatic rotation control and reasonable design structure reduce the time cost and shorten the construction period.

[0015] In summary, it has the advantages of reducing the grouting outlet pressure, preventing pipeline blockage, rotary uniform spraying, and shortening the construction period. Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of part of the structure (top cover, right cover and side panels are not shown).

[0018] Figure 3 Schematic diagram of the structure of the grouting pipe. DETAILED DESCRIPTION

[0019] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0020] Combination Figure 1 — Figure 3 As shown, a tunnel lining vault concrete pouring shunt pipe mechanism is composed of a grouting pipe installation box 1, a grouting pipe 2 installed on the grouting pipe installation box 1, and a rotary driving member 3.

[0021] The grouting pipe installation box 1 is composed of a top cover plate 11, a right cover plate 12, a mounting base 13 and side plates 14 symmetrically arranged front and back.

[0022] The top cover plate 11 and the mounting base 13 are both provided with grouting pipe holes for the upper and lower ends of the grouting pipe 2 to vertically pass through.

[0023] The right cover plate 12 is provided with an opening through which the gear reducer 32 is exposed.

[0024] The side plate 14 is provided with a through hole corresponding to the output spindle of the rotary drive member 3 , and is equipped with a manual rocker spare tool that can pass through the through hole to manually rotate the output spindle of the rotary drive member 3 .

[0025] An observation window 141 is provided at the upper middle portion of the side plate 14 .

[0026] The rotary drive member 3 is located at the lower part of the grouting pipe 2 and provides a rotary driving force for the grouting pipe 2 .

[0027] The upper part of the grouting pipe 2 extends into the tunnel lining vault and is horizontally penetrated by a square branch flow opening 21 near the top.

[0028] A pipe top plugging cover 22 is horizontally installed at the top end of the grouting pipe 2.

[0029] A conical diversion column 221 is disposed in the center of the bottom surface of the pipe top plugging cover 22 facing downward, so that the concrete sprayed from the grouting pipe 2 can be evenly diverted out along the square diversion opening 21.

[0030] A mounting flange 24 is provided at the lower portion of the grouting pipe 2 .

[0031] The bottom end of the grouting pipe 2 is provided with a pipe joint 23 that can be butt-jointed with a 45° bent pipe.

[0032] A monitoring device 4 is snap-fitted and installed at the top of the grouting pipe 2.

[0033] On the outer wall of the grouting pipe 2 along the pipe body, cable placement grooves 25 which are integrally long strip-shaped are symmetrically arranged on the left and right for placing the cables from the monitoring device 4.

[0034] At the bottom of the cable placement groove 25, a cable pipe 26 is connected and bent vertically downward to pass through the installation flange 24, so as to lead the cable out of the grouting pipe installation box body 1.

[0035] The rotary driving member 3 is composed of a rotary support base 31 whose outer ring is threadedly connected to the installation flange 24 and a gear-type speed reducer 32 that provides rotational driving force for the rotary support base 31.

[0036] Around the grouting pipe through-hole of the installation base 13, driving thread installation holes threadedly connected to the inner ring of the rotary support base 31 are arranged.

[0037] When the gear-type speed reducer 32 is started, the grouting pipe 2 is driven to rotate through the rotary support base 31.

[0038] First, connect the 45° bent pipe through the pipe joint 23 and dock it with the grouting pipeline on the lining trolley, and then vertically extend the upper part of the grouting pipe 2 into the tunnel lining arch top.

[0039] After the grouting pipe is sealed and fixed on the tunnel lining arch top formwork, finally, start the gear-type speed reducer 32 and start transporting concrete for grouting at the same time.

Claims

1. A tunnel lining vault concrete pouring shunt pipe mechanism, characterized in that: The invention comprises a grouting pipe installation box (1), a grouting pipe (2) both installed on the grouting pipe installation box (1), and a rotary drive member (3), wherein the rotary drive member (3) is located at the lower part of the grouting pipe (2) and provides a rotary drive force for the grouting pipe (2), the upper part of the grouting pipe (2) extends into the tunnel lining arch and is provided with a square diversion opening (21) horizontally passing through the tunnel lining arch near the top, the top end of the grouting pipe (2) is horizontally installed with a pipe top plugging cover (22), and the bottom surface of the pipe top plugging cover (22) is provided with a conical diversion column (221) in the center facing downwards, so that concrete sprayed from the grouting pipe (2) can be evenly diverted out along the square diversion opening (21).

2. A tunnel lining vault concrete pouring shunt pipe mechanism according to claim 1, characterized in that: The grouting pipe installation box (1) comprises a top cover plate (11), a right cover plate (12), a mounting base (13), and side plates (14) symmetrically arranged front and rear, and the top cover plate (11) and the mounting base (13) are both provided with grouting pipe through holes for the upper and lower ends of the grouting pipe (2) to vertically pass through.

3. A tunnel lining vault concrete pouring shunt pipe mechanism according to claim 2, characterized in that: The lower part of the grouting pipe (2) is provided with a mounting flange (24), the bottom end of the grouting pipe (2) is provided with a pipe joint (23) capable of docking with a 45° bent pipe, the rotary drive member (3) comprises a rotary support seat (31) whose outer ring is threadedly connected to the mounting flange (24) and a gear reducer (32) providing a rotational driving force for the rotary support seat (31), and a driving threaded mounting hole threadedly connected to the inner ring of the rotary support seat (31) is provided around the grouting pipe through hole of the mounting base (13), and when the gear reducer (32) is started, the grouting pipe (2) is driven to rotate through the rotary support seat (31).

4. A tunnel lining vault concrete pouring shunt pipe mechanism according to claim 2, characterized in that: The right cover plate (12) is provided with an opening through which the gear reducer (32) is exposed.

5. The tunnel lining vault concrete pouring shunt pipe mechanism according to claim 3, characterized in that: The side plate (14) is provided with a through hole corresponding to the output spindle of the gear reducer (32), and is equipped with a manual rocker spare tool capable of passing through the through hole to manually rotate the output shaft of the gear reducer (32). An observation window (141) is provided in the upper middle portion of the side plate (14).

6. A tunnel lining vault concrete pouring shunt pipe mechanism according to claim 1, characterized in that: The top of the grouting pipe (2) is buckled with a monitoring device (4) installed thereon, and the grouting pipe (2) is provided with a long, strip-shaped cable placement groove (25) symmetrically arranged along the outer wall of the pipe body, for accommodating cables from the monitoring device (4).

7. A tunnel lining vault concrete pouring shunt pipe mechanism according to claim 6, characterized in that: The bottom of the cable placement groove (25) is connected to a cable pipe (26) that is bent vertically downward and passes through the mounting flange (24), thereby leading the cable out of the grouting pipe mounting box (1).

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