Shield tunnel reinforcing and supporting device

Abstract

The utility model discloses a shield tunnel reinforcing and supporting device which comprises tunnel segments, a shaft seat assembly, a large arm assembly, a small arm assembly and a supporting assembly, and the tunnel segments, the shaft seat assembly, the large arm assembly, the small arm assembly and the supporting assembly are annularly arranged in the shield tail of a shield tunneling machine and the rock wall of a tunnel. The inner wall of the duct piece installed in the tunnel is radially supported, meanwhile, the supporting device can also serve as a temporary bearing fixing structure for auxiliary installation of the wedge-shaped duct piece on the top of the tunnel, inward stress deformation of the duct piece caused by tunnel rock wall collapse is prevented, and the problem that in the shield tunnel construction process, the duct piece is damaged is solved. The tunnel rock wall collapse is easily caused, so that the installed duct piece is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of karst detection, and more specifically, to a shield tunnel reinforcement support device. Background Art

[0002] The shield tunnel reinforcement support device is a device used to reinforce and support the tunnel during the shield construction process. It is mainly used to ensure the stability and safety of the tunnel. The tunnel shield construction project is a type of underground excavation project. It uses a shield machine to carry out earthwork excavation within a certain depth underground to form a tunnel. The characteristic of shield construction is that while the shield machine is excavating, the construction workers are simultaneously installing the tunnel segments in the shield tail cabin of the shield. During the segment installation process, the shield machine will also inject cement slurry or chemical slurry into the gap between the installed segment and the inner wall of the tunnel to fill the gap, prevent settlement, and improve the integrity of the segment and the tunnel rock wall and seal and block water.

[0003] The existing technology has the following disadvantages: the slurry injected between the pipe segment and the tunnel rock wall during the current shield tunnel construction cannot solidify and form a certain strength immediately. At this time, the rock wall of the tunnel is in a relatively weak and unstable state. It is easy for the rock wall to collapse due to the disturbance of the stratum during the excavation of the shield machine, which in turn causes damage to the installed pipe segment, causing deformation and leakage of the pipe segment, and damage to the tunnel line. Utility Model Content

[0004] In view of the above defects or improvement needs of the prior art, the utility model provides a shield tunnel reinforcement support device, which radially supports the inner wall of the installed segment in the tunnel through a one-line support structure formed by a large arm assembly, a small arm assembly and a support assembly. It can also serve as a temporary supporting and fixing structure for the auxiliary installation of the wedge-shaped segment on the top of the tunnel, to prevent the segment from being deformed inward due to force caused by the collapse of the tunnel rock wall. The two large arm assemblies are jointly mounted on an axle seat assembly, which can be rotated separately according to the needs of use to form a variety of support angles, and flexibly support the appropriate position on the inner wall of the tunnel segment, thereby solving the problem that the tunnel rock wall collapse is easily caused during the shield tunnel construction, thereby causing damage to the installed segment.

[0005] In order to achieve the above-mentioned purpose, according to the utility model, a shield tunnel reinforcement support device is provided, comprising a tunnel segment annularly arranged inside the shield tail of a shield machine and inside the rock wall of a tunnel, characterized in that: it also comprises an axle seat assembly, a big arm assembly, a small arm assembly, and a support assembly; the axle seat assembly is located at the axial center position of the tunnel cross section, and the axle seat assembly is provided with a rotatable big arm assembly on both sides along the tunnel axis direction, and a telescopic small arm assembly is provided on the side of the big arm assembly facing the inner wall of the tunnel segment, and a rotatable support assembly is installed on the small arm assembly, and the support assembly is against the inner wall of the tunnel segment;

[0006] The shaft seat assembly includes a ring seat, a rotating shaft, a storage port, and an LED light strip; the ring seat is in the shape of a pancake and the center of the circle coincides with the axis of the tunnel, the left and right ends of the ring seat are fixedly connected with the rotating shaft, the upper arm assembly is sleeved on the rotating shaft and rotates around the rotating shaft; the storage port is opened in the rotating shaft and passes through the left and right, and a number of equidistantly distributed LED light strips are installed on the arc-shaped outer edge of the ring seat.

[0007] Furthermore, the boom assembly includes a shaft sleeve, a wing frame, and a U-shaped fixing frame; the shaft sleeve has an axial hole in the middle and the rotating shaft is plugged into the axial hole, and two groups of I-shaped wing frames symmetrical relative to the axis of the shaft sleeve are fixedly connected to the arc-shaped outer wall of the shaft sleeve, and a U-shaped fixing frame is fixedly installed on the back end of the wing frame, and the horizontal part of the U-shaped fixing frame faces one side of the tunnel segment.

[0008] Furthermore, the forearm assembly includes a cylinder, a U-shaped movable frame, and a pin shaft; the cylinder is installed on the horizontal part of the U-shaped fixed frame, and a U-shaped movable frame is provided on the side of the U-shaped fixed frame facing the inner wall of the tunnel segment, the horizontal part of the U-shaped movable frame is fixedly connected to the piston rod of the cylinder, and a pin shaft is installed between the vertical parts of the U-shaped movable frame.

[0009] Furthermore, the support assembly includes a support, an end plate, and a pin hole; the support is located between the vertical parts of the U-shaped movable frame, a pin hole is provided in the support and is sleeved on the outside of the pin shaft, and an end plate that is compatible with the circular cross-section line shape of the tunnel segment is provided on the side of the support facing the tunnel segment.

[0010] Furthermore, the supporting assembly includes a rubber pad and a reflective strip; a rubber pad is arranged on the surface of the end plate, the rubber pad is tightly attached to the inner wall of the tunnel segment, and reflective strips are glued and fixed to the side walls at the left and right ends of the support.

[0011] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0012] 1. The utility model provides a shield tunnel reinforcement support device, which radially supports the inner wall of the installed segment in the tunnel through a one-line support structure formed by a large arm assembly, a small arm assembly and a support assembly. It can also serve as a temporary supporting and fixing structure for auxiliary installation of the wedge-shaped segment on the top of the tunnel to prevent the segment from being deformed inward due to force caused by the collapse of the tunnel rock wall. The two large arm assemblies are jointly mounted on an axle seat assembly, and can be rotated separately according to the needs of use to form a variety of support angles, and flexibly support the appropriate position on the inner wall of the tunnel segment, thereby solving the problem that the tunnel rock wall collapse is easily caused during the construction of the shield tunnel, thereby damaging the installed segment.

[0013] 2. The utility model provides a shield tunnel reinforcement support device. Through the LED light strip on the shaft seat assembly, it can provide auxiliary lighting for the installation of shield machines and pipe segments in the dim environment of the tunnel and the setting of support structures, thereby improving the work efficiency of tunnel construction and reducing the work difficulty caused by the tunnel environment.

[0014] 3. The utility model provides a shield tunnel reinforcement support device, which can store a certain amount of tunnel segment installation parts, such as anchor bolts, rivets, etc. through the storage opening on the shaft seat assembly. It has more diverse functions and is convenient for access at any time when installing tunnel segments located adjacent to the support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the first three-dimensional structure of the shield tunnel reinforcement support device of the utility model;

[0016] Figure 2 It is a schematic diagram of the second three-dimensional structure of the shield tunnel reinforcement support device of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the shaft seat assembly and the large arm assembly of the shield tunnel reinforcement support device of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the small arm assembly of the shield tunnel reinforcement support device of the utility model;

[0019] Figure 5The three-dimensional structure diagram of the support assembly of the shield tunnel reinforcement support device of the utility model. In all the drawings, the same reference numerals represent the same technical features, specifically: 1. Tunnel segment; 2. Axle seat assembly; 3. Big arm assembly; 4. Small arm assembly; 5. Support assembly; 201. Ring seat; 202. Rotating shaft; 203. Storage port; 204. LED light strip; 301. Axle sleeve; 302. Wing frame; 303. U-shaped fixed frame; 401. Cylinder; 402. U-shaped movable frame; 403. Pin shaft; 501. Support; 502. End plate; 503. Pin hole; 504. Rubber pad; 505. Reflective strip. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figure 1-Figure 3 As shown, the utility model provides a shield tunnel reinforcement support device, comprising a tunnel segment 1, an axle seat assembly 2, a boom assembly 3, a small arm assembly 4, and a support assembly 5 which are annularly arranged inside the shield tail of a shield machine and inside the rock wall of a tunnel. The axle seat assembly 2 is located at the axial center position of a tunnel cross section, and a rotatable boom assembly 3 is arranged on both sides of the axle seat assembly 2 along the tunnel axis direction. A telescopic small arm assembly 4 is arranged on one side of the boom assembly 3 facing the inner wall of the tunnel segment 1, and a rotatable support assembly 5 is installed on the small arm assembly 4. The support assembly 5 abuts against the inner wall of the tunnel segment 1. A straight-line support structure formed by the combination of the boom assembly 3, the small arm assembly 4 and the support assembly 5 radially supports the inner wall of the tunnel segment 1 installed in the tunnel, and two groups of boom assemblies 3 are mounted and installed by the same axle seat assembly 2, so that the two boom assemblies 3 can be rotated respectively according to the use needs, and flexibly supported at a suitable position on the inner wall of the tunnel segment 1, so as to solve the problem that the tunnel rock wall collapse is easily caused during the construction of the shield tunnel, thereby causing damage to the installed segments.

[0022] Furthermore, if Figure 3As shown, the shaft seat assembly 2 includes a ring seat 201 and a rotating shaft 202; the ring seat 201 is in the shape of a round pancake and the center of the circle coincides with the axis of the tunnel, the left and right ends of the ring seat 201 are fixedly connected to the rotating shaft 202, the big arm assembly 3 is sleeved on the rotating shaft 202 and rotates around the rotating shaft 202, and the shaft seat assembly 2 also includes a receiving port 203 and an LED light strip 204; the receiving port 203 is opened in the rotating shaft 202 and passes through the left and right sides, and the arc-shaped outer edge of the ring seat 201 is equipped with a plurality of The LED light strips 204 are evenly distributed, and the big arm assembly 3 includes a shaft sleeve 301, a wing frame 302, and a U-shaped fixing frame 303; the shaft sleeve 301 has a shaft hole in the middle and the rotating shaft 202 is plugged into the shaft hole, and two groups of straight-shaped wing frames 302 symmetrically relative to the axis of the shaft sleeve 301 are fixedly connected on the arc-shaped outer wall of the shaft sleeve 301, and the U-shaped fixing frame 303 is fixedly installed at one end of the wing frame 302, and the horizontal part of the U-shaped fixing frame 303 faces the tunnel segment 1. When the boom assemblies 3 on both sides rotate, the size of the intersection angle is constantly changing. When the locations where the tunnel rock formation is prone to collapse are relatively concentrated, the intersection angle between the boom assemblies 3 can be reduced, so that the support assembly 5 can concentrate on supporting and stabilizing the weak location. When the locations where the tunnel rock formation is prone to collapse are relatively scattered, the intersection angle between the boom assemblies 3 can be expanded, so that the support assembly 5 can disperse and support and stabilize multiple weak locations. The installation of the tunnel segment 1 requires a lot of bolts to connect the segments on the same ring or adjacent rings into a whole. The storage port 203 is used to store bolts for easy access at any time. When installing the tunnel segment 1, the LED light strip 204 is used to provide lighting. The shaft sleeve 301 and the wing frame 302 rotate around the rotating shaft 202 to adjust the direction of the U-shaped fixing frame 303. The design of the U-shaped fixing frame 303 makes the structure hollow inside and light in weight, which is convenient for construction personnel to use in narrow tunnels.

[0023] Furthermore, if Figure 4 and Figure 5As shown, the small arm assembly 4 includes a cylinder 401, a U-shaped movable frame 402, and a pin 403; the cylinder 401 is installed on the horizontal part of the U-shaped fixed frame 303, and the U-shaped fixed frame 303 is provided with a U-shaped movable frame 402 on the side facing the inner wall of the tunnel segment 1, the horizontal part of the U-shaped movable frame 402 is fixedly connected to the piston rod of the cylinder 401, and the pin 403 is installed between the vertical parts of the U-shaped movable frame 402, and the support assembly 5 includes a support 501, an end plate 502, and a pin hole 503; the support 501 is located between the vertical parts of the U-shaped movable frame 402, and the pin hole 503 is provided in the support 501 and is sleeved on the outside of the pin 403, and the support 501 is provided with an end plate matching the circular cross-section line of the tunnel segment 1 on the side facing the tunnel segment 1 502, the support assembly 5 also includes a rubber pad 504 and a reflective strip 505; a rubber pad 504 is arranged on the surface of the end plate 502, and the rubber pad 504 is tightly attached to the inner wall of the tunnel segment 1. The reflective strips 505 are glued and fixed to the side walls at the left and right ends of the support 501. The cylinder 401 pushes and pulls the U-shaped movable frame 402 to move closer to or away from the tunnel segment 1 by axially extending the piston rod along the U-shaped fixed frame 303. The support 501 and the end plate 502 transfer the force applied by the tunnel rock wall to the tunnel segment 1 to the shaft seat assembly 2 and gather it to one point. The friction between the rubber pad 504 and the inner wall of the tunnel segment 1 prevents the end plate 502 from shaking. When construction personnel walk in the tunnel, the reflective strips 505 reflect light to prevent them from hitting the support device.

[0024] The working principle of the support device is as follows: when working, after the construction workers in the tunnel install the tunnel segment 1 in the shield tail of the shield machine, before the segment is separated from the shield tail of the shield machine and independently bears the load of the tunnel rock wall, several support devices are taken out and set on the tunnel segment 1 at a certain interval; first, the ring seat 201 in the shaft seat assembly 2 is located at the center of the tunnel segment 1, and then the shaft sleeves 301 on both sides of the ring seat 201 are rotated around the rotating shaft 202 according to the force requirements of the tunnel segment 1 A certain angle is formed so that the wing frames 302 on both sides have a suitable intersection angle; then the cylinder 401 is started to push the U-shaped movable frame 402 in the small arm assembly 4 to extend along the axis direction of the wing frame 302 toward one side of the tunnel segment 1, and the force is transmitted to the support 501 to drive it to move together. During the movement of the support 501, the operator rotates the support 501 by hand to rotate it along the pin shaft 403 and change the direction of the arc surface of the end plate 502, so that the end plate 502 can fit the inner wall of the upper tunnel segment 1 and The axis of the end plate 502 coincides with the power output axis of the cylinder 401; when the rubber pad 504 contacts the tunnel segment 1, the cylinder 401 further applies a thrust force to compress the rubber pad 504 and reduce the distance between the end plate 502 and the tunnel segment 1. The friction between the rubber pad 504 and the inner wall of the tunnel segment 1 prevents the end plate 502 from shaking, and finally forms a force transmission and force bearing system of the tunnel segment 1, the end plate 502, the U-shaped movable frame 402, the U-shaped fixed frame 303, and the ring seat 201. The inside of the tunnel segment 1 forms a radial supporting and fixing effect; through the above steps, the I-shaped supporting structure formed by the combination of the upper arm assembly 3, the lower arm assembly 4 and the supporting assembly 5 provides radial support to the inner wall of the segment installed in the tunnel, and can also be used as a temporary supporting and fixing structure for the auxiliary installation of the wedge-shaped segment at the top of the tunnel, to prevent the collapse of the tunnel rock wall from causing the segment to be deformed inwardly, so as to solve the problem that the tunnel rock wall collapse is easily caused during the construction of the shield tunnel, thereby causing damage to the installed segment.

[0025] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shield tunnel reinforcement support device, comprising a tunnel segment (1) annularly arranged inside a shield tail of a shield machine and inside a tunnel rock wall, Features: It also comprises an axle seat assembly (2), a large arm assembly (3), a small arm assembly (4), and a support assembly (5); the axle seat assembly (2) is located at the axial center position of the tunnel cross section; the axle seat assembly (2) is provided with the large arm assembly (3) which can rotate and move on both sides along the tunnel axis direction; the large arm assembly (3) is provided with the small arm assembly (4) which can move and move telescopically on the side facing the inner wall of the tunnel segment (1); the small arm assembly (4) is provided with the support assembly (5) which can rotate and move, and the support assembly (5) is against the inner wall of the tunnel segment (1); The shaft seat assembly (2) comprises a ring seat (201), a rotating shaft (202), a receiving opening (203), and an LED light strip (204); the ring seat (201) is in the shape of a round cake, and the center of the circle coincides with the axis of the tunnel; the left and right ends of the ring seat (201) are fixedly connected to the rotating shaft (202); the large arm assembly (3) is sleeved on the rotating shaft (202) and rotates around the rotating shaft (202); the receiving opening (203) is opened in the rotating shaft (202) and passes through the left and right sides; and a plurality of equidistantly distributed LED light strips (204) are installed on the arc-shaped outer edge of the ring seat (201).

2. A shield tunnel reinforcement support device according to claim 1, Features: The large arm assembly (3) comprises a shaft sleeve (301), a wing frame (302), and a U-shaped fixing frame (303); the shaft sleeve (301) has a shaft hole in the middle and the rotating shaft (202) is plugged into and connected to the shaft hole; two groups of straight-shaped wing frames (302) symmetrical with respect to the axis of the shaft sleeve (301) are fixedly connected to the arc-shaped outer wall of the shaft sleeve (301); the U-shaped fixing frame (303) is fixedly installed on one end of the wing frame (302) facing away from the shaft sleeve (301); and the horizontal part of the U-shaped fixing frame (303) faces one side of the tunnel segment (1).

3. A shield tunnel reinforcement support device according to claim 2, Features: The small arm assembly (4) comprises a cylinder (401), a U-shaped movable frame (402), and a pin (403); the cylinder (401) is mounted on the horizontal portion of the U-shaped fixed frame (303); the U-shaped movable frame (402) is arranged on the side of the U-shaped fixed frame (303) facing the inner wall of the tunnel segment (1); the horizontal portion of the U-shaped movable frame (402) is fixedly connected to the piston rod of the cylinder (401); and the pin (403) is installed between the vertical portions of the U-shaped movable frame (402).

4. A shield tunnel reinforcement support device according to claim 3, Features: The support assembly (5) comprises a support (501), an end plate (502), and a pin hole (503); the support (501) is located between the vertical parts of the U-shaped movable frame (402); the support (501) is provided with the pin hole (503) sleeved on the outside of the pin shaft (403); and the support (501) is provided with an end plate (502) matching the circular cross-section line shape of the tunnel segment (1) on the side facing the tunnel segment (1).

5. A shield tunnel reinforcement support device according to claim 4, Features: The support assembly (5) comprises a rubber pad (504) and a reflective strip (505); the rubber pad (504) is arranged on the surface of the end plate (502), the rubber pad (504) is closely attached to the inner wall of the tunnel segment (1), and the reflective strip (505) is adhesively fixed to the side walls at the left and right ends of the support (501).

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