A tunnel segment rapid positioning and calibration device

Abstract

The utility model belongs to tunnel construction auxiliary equipment technical field especially is a kind of tunnel segment quick positioning calibration device, including three support rods and three inner rods, and the inner rod is movably inserted in corresponding support rod. The utility model, by operator, only needs to pull out moving block outward, overcomes the spring elasticity, makes the bayonet lock from locking groove, at this time, the kit can be freely slid on extension rod, and operator moves kit to suitable position according to actual demand, then loosens moving block, and the spring elasticity will make moving block reset, and the bayonet lock is again inserted in corresponding locking groove, completes the relocking of kit, to quickly adjust and fix the angle of two support rods in three support rods, realizes the quick adjustment and stable locking of three support rod angle, combines the positioning function of laser emitter, can quickly, accurately position and calibrate shield tunnel segment, effectively improves the efficiency and quality of shield tunnel construction.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction auxiliary equipment, specifically a rapid positioning and calibration device for tunnel segments. Background Technology

[0002] In shield tunnel construction, the assembly quality of the shield segments directly affects the structural stability, waterproofing performance, and service life of the entire tunnel project. Therefore, ensuring accurate positioning and calibration of the shield segments is a crucial step in the construction process. Furthermore, shield tunnel construction typically faces tight deadlines, making rapid positioning and calibration of the shield segments essential for improving construction efficiency and shortening the construction period. Slow positioning and calibration not only prolongs the assembly time of individual segments but may also affect the overall tunnel excavation progress and increase construction costs.

[0003] Chinese patented invention CN216115909U discloses a shield tunnel segment assembly and positioning device, including a first support rod, a second support rod, and a third support rod. A laser emitter is installed at the upper end of each of the first, second, and third support rods. A fixed toothed plate is fixedly connected to the inner side of the second and third support rods, and a first compression spring is sleeved at both ends of the fixed shaft. One end of the first compression spring is fixedly connected to a movable toothed pressure plate matching the fixed toothed plate, and the other end of the first compression spring is fixedly connected to the surface of the first support rod. This invention, by setting up a first, second, and third support rod and installing laser emitters on each of the three support rods, uses three sets of laser emitters to emit beams during shield segment positioning and detection to check the flatness of the shield segments, thus improving the positioning accuracy of the shield segments and significantly improving the quality of shield segment assembly.

[0004] However, the device still has certain problems. In actual use, the second and third supports are connected to the first support via a specific structure, involving a sliding design of the kit on the first support. However, the kit lacks an effective locking structure, allowing it to slide freely on the first support. In the complex and frequently moving environment of tunnel construction, this design poses many hidden dangers. Personnel move around frequently on-site, and workers can easily and unintentionally touch the kit while performing other operations. Once the kit is accidentally touched, it slides on the first support, causing the second and third supports to tilt or retract via the connecting rod. This accidental movement changes the angle of the carefully adjusted second and third supports, causing the three laser emitters to no longer be on the same arc. This change in the laser emitter position directly affects the positioning accuracy of the shield tunnel segments, leading to deviations in the detection results. Therefore, we propose a rapid positioning and calibration device for tunnel segments to solve the above problems. Summary of the Invention

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a rapid positioning and calibration device for tunnel segments, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A rapid positioning and calibration device for tunnel segments includes three support rods and three inner rods. The inner rods are movably inserted into the corresponding support rods. One of the support rods has a fixed shaft fixedly connected to both sides. The other two support rods have through holes and are sleeved on the fixed shafts through the through holes. An extension rod is welded to the bottom end of one of the support rods, and a fitting is sleeved on the extension rod. Pins are fixedly connected to both sides of the fitting, and connecting rods are rotatably connected to the pins. The end of the connecting rod is hinged to the bottom end of the other two support rods. Multiple locking grooves are opened on the front side of the extension rod. A T-shaped rod is welded to the front side of the fitting, and a moving block is slidably connected to the T-shaped rod. Two locking pins are welded to one side of the moving block, and the locking pins engage with one of the corresponding locking grooves. A spring is fixedly connected between the other side of the moving block and the inner wall of one side of the T-shaped rod.

[0010] Furthermore, the spring is movably sleeved on the T-shaped rod.

[0011] Furthermore, a mounting plate is fixedly connected to the top of the inner rod, and a support plate is welded to the top of the mounting plate.

[0012] Furthermore, a laser emitter is provided on one side of the mounting plate.

[0013] Furthermore, the movable block is provided with a guide hole, and the movable block is slidably connected to the T-shaped rod through the guide hole.

[0014] Furthermore, a handle is welded to the bottom end of the extension rod, and an anti-slip sleeve is provided on the outside of the handle.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a rapid positioning and calibration device for tunnel segments, which has the following advantages:

[0017] This invention allows operators to easily adjust and fix the angles of two of the three support rods. By pulling the moving block outward to overcome the spring force, the locking pin disengages from the locking groove. The operator can then move the kit to the appropriate position according to actual needs and release the moving block. The spring force will reset the moving block, and the locking pin will re-engage into the corresponding locking groove, thus relocking the kit. This enables rapid adjustment and stable locking of the angles of the three support rods. Combined with the positioning function of the laser emitter, it can quickly and accurately position and calibrate the shield tunnel segments, effectively improving the efficiency and quality of shield tunnel construction. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the other side of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram showing the connection between the mounting plate, laser emitter, and support plate of this utility model;

[0021] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0022] In the diagram: 1. Support rod; 2. Inner rod; 3. Mounting plate; 4. Laser emitter; 5. Support plate; 6. Fixed shaft; 7. Extension rod; 8. Kit; 9. Pin; 10. Connecting rod; 11. Locking groove; 12. T-shaped rod; 13. Moving block; 14. Locking pin; 15. Spring; 16. Handle. Detailed Implementation

[0023] 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.

[0024] Example

[0025] like Figures 1-4As shown, an embodiment of this utility model discloses a rapid positioning and calibration device for tunnel segments, comprising three support rods 1 and three inner rods 2. The inner rods 2 are movably inserted into the corresponding support rods 1. One of the support rods 1 has fixed shafts 6 fixedly connected to both sides. The other two support rods 1 have through holes, through which they are sleeved onto the fixed shafts 6. An extension rod 7 is welded to the bottom end of one of the support rods 1, and a fitting 8 is sleeved on the extension rod 7. Both sides of the 8 are fixedly connected with pins 9, and connecting rods 10 are rotatably connected to the pins 9. The end of the connecting rod 10 is hinged to the bottom end of the other two support rods 1. Multiple locking grooves 11 are opened on the front side of the extension rod 7. A T-shaped rod 12 is welded to the front side of the kit 8. A moving block 13 is slidably connected to the T-shaped rod 12. Two locking pins 14 are welded to one side of the moving block 13. The locking pins 14 are engaged with one of the corresponding locking grooves 11. A spring 15 is fixedly connected between the other side of the moving block 13 and the inner wall of one side of the T-shaped rod 12.

[0026] In use, in the initial state, when it is necessary to adjust the angle of two of the three support rods 1, the operator only needs to pull the moving block 13 outward to overcome the elastic force of the spring 15, so that the locking pin 14 is disengaged from the locking groove 11. At this time, the kit 8 can slide freely on the extension rod 7. After the operator moves the kit 8 to the appropriate position according to the actual needs, the moving block 13 is released. The elastic force of the spring 15 will cause the moving block 13 to reset, and the locking pin 14 will be locked into the corresponding locking groove 11 again, thus completing the relocking of the kit 8. This allows for quick adjustment and fixation of the angle of two of the three support rods 1, realizing the rapid adjustment and stable locking of the angle of the three support rods 1. Combined with the positioning function of the laser emitter 4, it can quickly and accurately position and calibrate the shield tunnel segments, effectively improving the efficiency and quality of shield tunnel construction.

[0027] like Figure 4 As shown, in some embodiments, the spring 15 is movably sleeved on the T-shaped rod 12.

[0028] like Figure 3 As shown, in some embodiments, an mounting plate 3 is fixedly connected to the top of the inner rod 2, a support plate 5 is welded to the top of the mounting plate 3, and a laser emitter 4 is provided on one side of the mounting plate 3.

[0029] After adjusting and locking the angles of the three support rods 1, the three laser emitters 4 of the device are positioned at specific locations and angles. The operator places the device near the tunnel lining segments, allowing the laser beams emitted by the three laser emitters 4 to be projected onto the surface of the segments. By observing the position and distribution of the laser beams on the segment surface, the operator can determine whether the flatness and position of the segments meet the design requirements. If the position of the laser beam deviates, the operator can readjust the position of the kit 8 on the extension rod 7, change the angles of the three support rods 1, and then adjust the position and angle of the laser emitters 4 until the laser beam is accurately projected onto the designated position on the segment surface, achieving rapid positioning and calibration of the tunnel lining segments.

[0030] like Figure 4 As shown, in some embodiments, the movable block 13 is provided with a guide hole, and the movable block 13 is slidably connected to the T-shaped rod 12 through the guide hole.

[0031] The T-shaped rod 12 serves as a limit, preventing the moving block 13 from shifting during movement.

[0032] like Figure 1 As shown, in some embodiments, a handle 16 is welded to the bottom end of the extension rod 7, and an anti-slip sleeve is provided on the outside of the handle 16.

[0033] The handle 16 is designed to make it easy for operators to move and operate the device by holding it, while the anti-slip sleeve increases the friction when the operator holds the handle 16, preventing the device from slipping during operation and improving the stability and safety of operation.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rapid positioning and calibration device for tunnel segments, comprising three support rods (1) and three inner rods (2), characterized in that: The inner rod (2) is movably inserted into the corresponding support rod (1). A fixed shaft (6) is fixedly connected to both sides of one of the three support rods (1). Through holes are opened on the other two support rods (1). The other two support rods (1) are sleeved onto the fixed shaft (6) through the through holes. An extension rod (7) is welded to the bottom end of one of the three support rods (1). A fitting (8) is sleeved on the extension rod (7). Pins (9) are fixedly connected to both sides of the fitting (8). Rotary connections are made on the pins (9). A connecting rod (10) is attached, the end of which is hinged to the bottom of the other two support rods (1). The front side of the extension rod (7) is provided with multiple locking grooves (11). A T-shaped rod (12) is welded to the front side of the kit (8). A moving block (13) is slidably connected to the T-shaped rod (12). Two locking pins (14) are welded to one side of the moving block (13). The locking pins (14) are engaged with one of the locking grooves (11) in the corresponding locking groove. A spring (15) is fixedly connected between the other side of the moving block (13) and the inner wall of one side of the T-shaped rod (12).

2. The tunnel segment rapid positioning and calibration device according to claim 1, characterized in that: The spring (15) is movably sleeved on the T-shaped rod (12).

3. The tunnel segment rapid positioning and calibration device according to claim 2, characterized in that: The top end of the inner rod (2) is fixedly connected to an installation plate (3), and a support plate (5) is welded to the top of the installation plate (3).

4. The tunnel segment rapid positioning and calibration device according to claim 3, characterized in that: A laser emitter (4) is provided on one side of the mounting plate (3).

5. The tunnel segment rapid positioning and calibration device according to claim 4, characterized in that: The movable block (13) has a guide hole, and the movable block (13) is slidably connected to the T-shaped rod (12) through the guide hole.

6. The tunnel segment rapid positioning and calibration device according to claim 5, characterized in that: The bottom end of the extension rod (7) is welded with a handle (16), and the outside of the handle (16) is provided with an anti-slip sleeve.

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