Duct piece dislocation repairing device suitable for shield tunnel

Abstract

The invention relates to the technical field of tunnel construction and maintenance, in particular to a duct piece dislocation repairing device suitable for a shield tunnel. Comprising two fixing mechanisms, the two fixing mechanisms are fixedly installed on shield tunnel segments on the two sides of a slab staggering segment respectively, two parallel sliding rails are connected between the two fixing mechanisms, and a force application mechanism is installed on the two sliding rails in a sliding mode and used for applying thrust to the slab staggering segment so that the slab staggering segment can be flush with the shield tunnel segments on the two sides. The device is simple in structure, small in size, convenient to install and capable of achieving high-efficiency dislocation repairing work in a narrow space.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction and maintenance, and in particular to a segment misalignment repairing device suitable for a shield tunnel. Background Art

[0002] In the current shield tunnel construction process, the installation quality of the shield tunnel segments is directly related to the overall safety and service life of the tunnel. As an important component of the shield segment, the installation of the capping block is particularly critical. At present, the installation of the capping block usually relies on workers to manually install it flat. However, this manual installation method is prone to deviation during construction, which in turn causes the shield segments to misalign when docking. The occurrence of misalignment not only destroys the tight docking between the segments, but also greatly increases the risk of groundwater leakage. The long-term existence of the seepage problem will corrode the segment structure and affect the durability of the tunnel. In addition, misalignment will reduce the overall bearing capacity of the segments, thereby weakening the structural strength of the tunnel, and ultimately affecting the safety and practicality of the tunnel.

[0003] In order to solve the problem of segment misalignment, the existing repair technology can eliminate the misalignment to a certain extent, but there is generally a problem of large working space requirements. For example, patent CN215633043U discloses a shield tunnel segment misalignment repair device, which repairs the misalignment by laying tracks. However, the device is large in size and occupies a large amount of construction space. In an environment where the tunnel working space is limited, the construction difficulty is high, and additional installation tracks and operating equipment are required, resulting in low construction efficiency. In addition, this repair method is complicated to operate and often requires more man-hours, which increases the construction cost of the project.

[0004] Therefore, the existing method of repairing misalignment has obvious limitations in construction environments with limited space. There is an urgent need for an improved technology that can efficiently repair segment misalignment in a small space, which can not only ensure the repair accuracy but also improve the construction efficiency, thereby further improving the safety and reliability of shield tunnels. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a segment misalignment repair device applicable to a shield tunnel, and specifically discloses the following technical solutions:

[0006] A segment misalignment repair device suitable for a shield tunnel comprises two fixing mechanisms, which are respectively fixedly mounted on the shield tunnel segments on both sides of the misaligned segment, two mutually parallel slide rails are connected between the two fixing mechanisms, and force applying mechanisms are slidably mounted on the two slide rails for applying thrust to the misaligned segment to make it flush with the shield tunnel segments on both sides.

[0007] Furthermore, the two fixing mechanisms each include a fixed support and a slide rail connector, the fixed support includes a fixed block, the bottom end of the fixed block is fixedly connected to a fixed rod, the lower part of the fixed rod is provided with an external thread, the fixed support is threadedly connected to the threaded grouting hole on the shield tunnel segment through the fixed rod, the two sides of the fixed block are respectively fixedly connected to a first fixed shaft, the slide rail connector can be rotatably installed on the two first fixed shafts, and the two ends of each of the slide rails are respectively detachably connected to the two slide rail connectors.

[0008] Furthermore, a limiting support plate is fixedly connected to the middle outer wall of the fixing rod.

[0009] Furthermore, the two slide rail connectors each include a connecting plate, and the sides of the two connecting plates that are away from each other are fixedly connected to two parallel ear plates, and the sides of the two connecting plates that are close to each other are respectively threadedly connected to the two ends of the slide rail, and each of the two ear plates of the slide rail connector is provided with an axial hole matching the first fixed axis, and each of the slide rail connector is rotatably connected to the two first fixed axes on the corresponding fixed support through the two ear plates.

[0010] Furthermore, the force-applying mechanism includes a force-applying platform, a force-applying screw and two sliding connectors, the two sides of the force-applying platform are respectively fixedly connected with second fixed shafts, the two sliding connectors are respectively slidably installed on the two sliding rails, and the two sliding connectors are respectively rotatably connected to the two second fixed shafts, a threaded center hole which passes through the center of the force-applying platform from top to bottom is provided at the center, a force screw is threadedly connected in the threaded center hole, and the force screw passes through the threaded center hole from top to bottom.

[0011] Furthermore, the bottom end of the force screw is fixedly connected with a force pad.

[0012] Furthermore, a tightening bolt is provided on the top of the sliding connector for fixing the sliding connector to the slide rail.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The invention has a simple structure, a small volume and is easy to install, and can realize high-efficiency misalignment repair work in a relatively narrow space;

[0015] The present invention ensures the stability of the device during the repair process by firmly connecting the fixed support to the threaded grouting hole;

[0016] The force-applying mechanism can slide along the slide rail through the sliding connector and apply pressure in combination with the rotating force-applying screw, thereby ensuring accurate force adjustment of the misaligned position;

[0017] The force pad connected to the bottom end of the force screw increases the contact area between the force screw and the misaligned segment, effectively avoiding the risk of segment damage caused by excessive local pressure, thereby solving the problems of unstable fixation and uneven force application in the repair process in the prior art, and the segment is not damaged during the entire construction process;

[0018] The present invention improves the operational accuracy and safety of misalignment repair and improves the repair efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the force application platform in the present invention;

[0021] Figure 3 It is a front view of the force application platform in the present invention;

[0022] Figure 4 It is a structural schematic diagram of the sliding connector in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the slide rail and the slide rail connector in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the fixed support in the present invention;

[0025] Figure 7 It is a structural schematic diagram of the force applying screw and the force applying pad in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the threaded grouting hole in the present invention.

[0027] Among them: 1-slide rail; 2-fixed support; 3-slide rail connector; 4-sliding connector; 5-force platform; 6-force screw; 7-threaded center hole; 8-screw head; 9-force pad; 10-tightening bolt; 11-threaded grouting hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Reference Figure 1-8A segment misalignment repair device suitable for a shield tunnel comprises two fixing mechanisms, which are respectively fixedly mounted on the shield tunnel segments on both sides of the misaligned segment, two mutually parallel slide rails 1 are connected between the two fixing mechanisms, and force applying mechanisms are slidably mounted on the two slide rails 1 for applying thrust to the misaligned segment to make it flush with the shield tunnel segments on both sides.

[0030] In this embodiment, both fixing mechanisms include a fixed support 2 and a slide rail connector 3. The fixed support 2 includes a fixed block, the bottom end of the fixed block is fixedly connected to a fixed rod, the lower part of the fixed rod is provided with an external thread, the fixed support is threadedly connected to the threaded grouting hole 11 on the shield tunnel segment through the fixed rod, the two sides of the fixed block are respectively fixedly connected to the first fixed shaft, the slide rail connector 3 can be rotatably installed on the two first fixed shafts, and the two ends of each slide rail 1 are respectively detachably connected to the two slide rail connectors 3. The fixed support 2 is threadedly connected to the threaded grouting hole 11 on the shield tunnel segment through the fixed rod at the bottom thereof, which is not only convenient for installation and disassembly, but also does not damage the original structure of the shield tunnel segment.

[0031] In this embodiment, a limiting support plate is fixedly connected to the middle outer wall of the fixing rod. The setting of the limiting support plate can not only limit the depth of the fixing rod screwed into the threaded grouting hole 11, but also provide more reliable support for the fixed support 2 when it abuts against the surface of the shield tunnel segment.

[0032] In this embodiment, the two slide rail connectors 3 both include a connecting plate, and the sides of the two connecting plates that are far away from each other are fixedly connected to two parallel ear plates, and the sides of the two connecting plates that are close to each other are respectively threadedly connected to the two ends of the slide rail 1, so as to facilitate the connection and disassembly between the slide rail 1 and the slide rail connector 3. The two ear plates of each slide rail connector 3 are provided with an axial hole matching the first fixed axis, and each slide rail connector 3 is rotatably connected to the two first fixed axes on the corresponding fixed support 2 through the two ear plates, so that the slide rail connector 3 can rotate around the first fixed axis to adapt to the curved surface of the shield tunnel segment.

[0033] In this embodiment, the force mechanism includes a force platform 5, a force screw 6 and two sliding connectors 4. The two sides of the force platform 5 are fixedly connected with second fixed shafts respectively. The two sliding connectors 4 are slidably installed on the two slide rails 1 respectively and can slide freely along the slide rails 1, so that the force platform 5 can adjust its position according to the actual repair needs, and the two sliding connectors 4 are rotatably connected to the two second fixed shafts respectively, so that the force platform 5 can rotate relative to the sliding connectors 4, so as to adjust its force angle. The center of the force platform 5 is provided with a threaded center hole 7 that passes through the threaded center hole 7 from top to bottom. The force screw 6 can be moved downward by screwing in the force screw 6, so that the misaligned pipe segment can be repaired by force through its bottom end.

[0034] In this embodiment, the bottom end of the force screw 6 is fixedly connected with a force pad 9. The setting of the force pad 9 can increase the contact area between the force screw 6 and the misaligned pipe segment, effectively avoiding the risk of pipe segment damage caused by excessive local pressure. The design of the force pad 9 not only increases the force area, but also enhances the stability of the force screw 6, ensuring the safety of the repair process.

[0035] In this embodiment, a tightening bolt 10 is further provided on the top of the sliding connector 4 for fixing the sliding connector 4 to the slide rail 1, thereby preventing the force applying mechanism from accidentally sliding during the force applying process.

[0036] Through the design of this device, the process of repairing the misaligned shield tunnel segments is simpler and more efficient. First, the fixed support 2 is secured to the shield tunnel segment through the threaded grouting hole 11, and the sliding connector 4 slides along the slide rail 1 to adjust the position of the force platform 5. Subsequently, the screw head 8 of the force screw 6 is rotated, and the force screw 6 is gradually applied to the misaligned segment through the force pad 9, thereby achieving the repair of the misalignment. During the repair process, the slide rail connector 3 allows the device to adjust the angle according to the repair position, further improving the flexibility and adaptability of the repair.

[0037] The invention has a simple structure, a small volume and is easy to install, and can realize high-efficiency misalignment repair work in a relatively narrow space.

[0038] The present invention ensures the stability of the device during the repair process by firmly connecting the fixed support 2 to the threaded grouting hole 11.

[0039] The force applying mechanism can slide along the slide rail 1 through the sliding connector 4 and apply pressure in combination with the rotating force applying screw 6, thereby ensuring accurate force adjustment of the misaligned position.

[0040] The force pad 9 connected to the bottom end of the force screw 6 increases the contact area between the force screw 6 and the misaligned pipe segment, effectively avoiding the risk of damage to the pipe segment due to excessive local pressure, thereby solving the problems of unstable fixation and uneven force application that are prone to occur during the repair process in the prior art, and there is no damage to the pipe segment during the entire construction process.

[0041] The present invention improves the operational accuracy and safety of misalignment repair and improves the repair efficiency.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A segment misalignment repair device suitable for shield tunnels, characterized in that: It comprises two fixing mechanisms, which are respectively fixedly mounted on the shield tunnel segments on both sides of the staggered segments, two parallel slide rails are connected between the two fixing mechanisms, and force applying mechanisms are slidably mounted on the two slide rails for applying thrust to the staggered segments to make them flush with the shield tunnel segments on both sides.

2. The segment misalignment repair device suitable for shield tunnels according to claim 1, characterized in that: The two fixing mechanisms each include a fixed support and a slide rail connector, the fixed support includes a fixed block, the bottom end of the fixed block is fixedly connected to a fixed rod, the lower part of the fixed rod is provided with an external thread, the fixed support is threadedly connected to the threaded grouting hole on the shield tunnel segment through the fixed rod, the two sides of the fixed block are respectively fixedly connected to the first fixed shaft, the slide rail connector can be rotatably installed on the two first fixed shafts, and the two ends of each of the slide rails are respectively detachably connected to the two slide rail connectors.

3. The segment misalignment repair device suitable for shield tunnel according to claim 2, characterized in that: A limiting support plate is fixedly connected to the middle outer wall of the fixing rod.

4. The segment misalignment repair device for shield tunnels according to claim 2, characterized in that: The two slide rail connectors each include a connecting plate, and the sides of the two connecting plates that are away from each other are fixedly connected to two parallel ear plates, and the sides of the two connecting plates that are close to each other are respectively threadedly connected to the two ends of the slide rail, and the two ear plates of each slide rail connector are provided with an axial hole matching the first fixed shaft, and each slide rail connector is rotatably connected to the two first fixed shafts on the corresponding fixed support through the two ear plates.

5. The segment misalignment repair device applicable to a shield tunnel according to claim 1, characterized in that: The force-applying mechanism includes a force-applying platform, a force-applying screw and two sliding connectors. The two sides of the force-applying platform are respectively fixedly connected with second fixed shafts. The two sliding connectors are respectively slidably installed on the two sliding rails, and the two sliding connectors are respectively rotatably connected to the two second fixed shafts. A threaded center hole that passes through the center of the force-applying platform is provided at the center of the force-applying platform, and a force screw is threadedly connected in the threaded center hole. The force screw passes through the threaded center hole from top to bottom.

6. The segment misalignment repair device for shield tunnels according to claim 5, characterized in that: The bottom end of the force applying screw is fixedly connected with a force applying pad.

7. The segment misalignment repair device for shield tunnels according to claim 5, characterized in that: A tightening bolt is also provided on the top of the sliding connector for fixing the sliding connector to the slide rail.

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