A tunnel arch deformation monitoring mechanism for tunnel construction

Abstract

This utility model discloses a tunnel arch deformation monitoring mechanism for tunnel construction, belonging to the field of tunnel construction technology. It includes a tunnel body with two bases on its inner side. Two self-locking casters are fixedly installed on the bottom surfaces of both bases, with the bottom ends of the casters fitting against the bottom surface of the tunnel body's inner cavity. Support plates are fixedly connected to the top surfaces of both bases. In this utility model, two laser rangefinders are installed on each base. After the device is pushed into the tunnel body, the two laser rangefinders on the bases measure the distance between the bases and the inner wall of the tunnel body, ensuring that the distances from the two bases to the sides of the tunnel body's inner cavity are equal. This guarantees that the device is located in the center of the tunnel body's inner cavity and contacts the tunnel arch using a fitting column. Even minor deformations of the arch can be detected, ensuring monitoring accuracy and practicality.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and more specifically, to a tunnel arch deformation monitoring mechanism for tunnel construction. Background Technology

[0002] A tunnel is an engineering structure buried underground, representing a form of human utilization of underground space. The tunnel structure comprises two parts: the main structure and auxiliary equipment. The main structure consists of the tunnel body and the portal, both of which are mostly arched structures. After tunnel construction, it is necessary to monitor the deformation of the arch.

[0003] A search revealed that utility model patent CN219531967U discloses a tunnel arch deformation monitoring mechanism for tunnel construction. The mechanism includes a base, a fixed frame fixedly connected to the top of the base, a monitoring box fixedly connected to the top of the fixed frame, a distance sensor installed at the bottom of the monitoring box, a limit rod slidably connected inside the monitoring box, and a contact plate fixedly connected to the top of the limit rod. The outside of the contact plate can contact the inner wall of the tunnel body. When the monitoring position needs to be adjusted, the piston of the hydraulic telescopic rod drives the support foot upwards, causing the support foot to leave the ground and the caster wheels to contact the ground, facilitating movement of the mechanism to adjust the monitoring position. After determining the monitoring position, the piston of the hydraulic telescopic rod drives the support foot downwards, supporting the mechanism and fixing its position. This provides a convenient and flexible way to change the monitoring position, offering high usability. However, the above-mentioned patent still has the following shortcomings: when moving the device into the tunnel, it is not convenient to ensure that the device is moved to the middle of the tunnel for use, resulting in poor practicality. In addition, the contact plate is large in volume, making it difficult to monitor when the deformation of the tunnel arch is small, resulting in poor monitoring accuracy. Furthermore, the size of the tunnel arch varies, making it inconvenient to monitor tunnel arches with different inner diameters. Therefore, we propose a tunnel arch deformation monitoring mechanism for tunnel construction. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a tunnel arch deformation monitoring mechanism for tunnel construction.

[0005] To solve the above problems, the present invention adopts the following technical solution: a tunnel arch deformation monitoring mechanism for tunnel construction, comprising a tunnel body, two bases provided on the inner side of the tunnel body, two self-locking casters fixedly installed on the bottom surface of each of the two bases, the bottom ends of the two self-locking casters fitting against the bottom surface of the inner cavity of the tunnel body, support plates fixedly connected to the top surface of each of the two bases, multiple arc-shaped frames fixedly connected to the top of the two support plates, multiple telescopic mechanisms provided on each of the multiple arc-shaped frames, fitting columns provided at the top of each of the multiple telescopic mechanisms, contact sensors provided at the top of each of the multiple fitting columns, support mechanisms provided at both ends of the bases, and two laser rangefinders fixedly installed on the outer sides of the two bases respectively.

[0006] As a preferred embodiment of this utility model, the telescopic mechanism includes an electric telescopic rod fixedly installed on an arc-shaped frame. A telescopic cylinder is fixedly connected to the top end of the electric telescopic rod. A spring is fixedly connected to the bottom surface of the inner cavity of the telescopic cylinder. A piston plate is fixedly connected to the top end of the spring. A telescopic column is fixedly connected to the top surface of the piston plate. The top end of the telescopic column is movably sleeved to the outside of the telescopic cylinder and connected to the fitting column. A distance measuring sensor is fixedly installed on the bottom surface of the inner cavity of the telescopic cylinder.

[0007] As a preferred embodiment of this utility model, the support mechanism includes a mounting base fixedly connected to the end face of the base, a hydraulic cylinder fixedly mounted on the mounting base, a support foot fixedly connected to the output end of the hydraulic cylinder, and the bottom surface of the support foot being in contact with the bottom surface of the tunnel body.

[0008] As a preferred embodiment of this utility model, a buzzer is fixedly installed on the side of one of the support plates, and a control panel is fixedly installed on the side of another support plate. The control panel is electrically connected to the buzzer, laser rangefinder, hydraulic cylinder, contact sensor, electric telescopic rod, and range sensor, respectively.

[0009] As a preferred embodiment of this utility model, the inner sides of the two bases are provided with mounting grooves, and the inner cavity of one of the mounting grooves is provided with a storage battery. The storage battery is electrically connected to the control panel, the laser rangefinder, the buzzer, the hydraulic cylinder, the contact sensor, the electric telescopic rod, and the distance sensor, respectively.

[0010] In a preferred embodiment of this utility model, the side of the piston plate is in contact with the inner wall of the telescopic cylinder.

[0011] Compared with the prior art, the advantages of this utility model are: (1) In this utility model, two laser rangefinders are set on two bases. After the device is pushed into the tunnel body, the two laser rangefinders on the two bases measure the distance between the base and the inner wall of the tunnel body, so that the distance between the two bases and the two sides of the inner cavity of the tunnel body is equal, ensuring that the device is located in the middle of the inner cavity of the tunnel body. In addition, the fitting column is in contact with the top arch of the tunnel body, so that as long as the top arch undergoes a small deformation, it can be detected, ensuring the accuracy of monitoring.

[0012] (2) In this utility model, multiple electric telescopic rods arranged in an arc shape are set on the arc frame. The multiple electric telescopic rods can drive multiple telescopic cylinders and multiple bonding columns to move away from the outside, so that the bonding columns come into contact with the inner side of the top arch of the tunnel body. This allows the device to monitor the top arch of tunnels with different inner diameters, which is practical. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 is a structural schematic diagram of the base of this utility model.

[0015] Figure 3 is a schematic diagram of the telescopic mechanism of this utility model.

[0016] Figure 4 is a cross-sectional schematic diagram of the telescopic mechanism of this utility model.

[0017] The following are the labels in the diagram: 1. Tunnel body; 2. Base; 3. Support mechanism; 4. Support plate; 5. Arc frame; 6. Telescopic mechanism; 7. Fitting column; 8. Contact sensor; 9. Self-locking casters; 10. Electric telescopic rod; 11. Telescopic cylinder; 12. Spring; 13. Piston plate; 14. Telescopic column; 15. Distance sensor; 16. Mounting slot; 17. Battery; 18. Control panel; 19. Buzzer; 20. Mounting base; 21. Hydraulic cylinder; 22. Support leg; 23. Laser rangefinder. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0021] As shown in Figures 1 to 4, a tunnel arch deformation monitoring mechanism for tunnel construction includes a tunnel body 1. Two bases 2 are installed on the inner side of the tunnel body 1. Two self-locking casters 9 are fixedly installed on the bottom surface of each base 2, with the bottom ends of the casters 9 fitting against the bottom surface of the tunnel body 1's inner cavity. Support plates 4 are fixedly connected to the top surfaces of both bases 2. Multiple arc-shaped frames 5 are fixedly connected to the tops of the support plates 4. Multiple telescopic mechanisms 6 are installed on each arc-shaped frame 5, and each telescopic mechanism 6 has a contact column 7 at its top. Contact sensors 8 are installed on the tops of each contact column 7. Support mechanisms 3 are installed at both ends of each base 2. Two laser rangefinders 23 are fixedly installed on the outer sides of each base 2. The laser rangefinders 23 measure the distance between the base 2 and the inner wall of the tunnel body 1, ensuring that the distances between the two bases 2 and the sides of the tunnel body 1's inner cavity are equal, thereby guaranteeing that the monitoring device is located in the center of the tunnel body 1's inner cavity. Example 2

[0022] Based on Embodiment 1, as shown in Figures 1, 3, and 4, the telescopic mechanism 6 includes an electric telescopic rod 10 fixedly mounted on the arc-shaped frame 5. A telescopic cylinder 11 is fixedly connected to the top of the electric telescopic rod 10. A spring 12 is fixedly connected to the bottom surface of the inner cavity of the telescopic cylinder 11. A piston plate 13 is fixedly connected to the top of the spring 12. A telescopic column 14 is fixedly connected to the top surface of the piston plate 13. The top of the telescopic column 14 is movably sleeved to the outside of the telescopic cylinder 11 and connected to the fitting column 7. A distance measuring sensor 15 is fixedly installed on the bottom surface of the inner cavity of the telescopic cylinder 11. The side of the piston plate 13 is in contact with the inner wall of the telescopic cylinder 11 to ensure the stability of the piston plate 13 during telescopic expansion and contraction within the inner cavity of the telescopic cylinder 11. Example 3

[0023] Based on Embodiments 1 and 2, as shown in Figures 1 to 4, the support mechanism 3 includes a mounting base 20 fixedly connected to the end face of the base 2. A hydraulic cylinder 21 is fixedly mounted on the mounting base 20. A support foot 22 is fixedly connected to the output end of the hydraulic cylinder 21. The bottom surface of the support foot 22 is in contact with the bottom surface of the tunnel body 1. A hydraulic oil tank, hydraulic pipeline, hydraulic pump, hydraulic motor, and accumulator are provided in the mounting slots 16 on both bases 2. The hydraulic pump generates high-pressure liquid to drive the hydraulic cylinder 21. A buzzer 19 is fixedly mounted on the side of one support plate 4, and a control panel 18 is fixedly mounted on the side of another support plate 4. The control panel 18 is electrically connected to the buzzer 19, laser rangefinder 23, hydraulic cylinder 21, contact sensor 8, electric telescopic rod 10, and distance sensor 15. The control panel 18 can be used to control the hydraulic cylinder 21, electric telescopic rod 10, buzzer 19, and laser rangefinder 23, and to control the contact sensor 8. The information detected by the rangefinder 15 is processed. The control panel 18 is selected from models compatible with this device, which is existing technology. The inner sides of the two bases 2 are provided with mounting slots 16. A battery 17 is installed in the inner cavity of one mounting slot 16. The battery 17 is electrically connected to the control panel 18, laser rangefinder 23, buzzer 19, hydraulic cylinder 21, contact sensor 8, electric telescopic rod 10, and rangefinder 15 respectively. The battery 17 provides power to the control panel 18, laser rangefinder 23, buzzer 19, hydraulic cylinder 21, contact sensor 8, electric telescopic rod 10, and rangefinder 15.

[0024] It should be noted that this utility model is a tunnel arch deformation monitoring mechanism for tunnel construction. In use, the self-locking casters 9 are first used to move the device into the tunnel body 1. The laser rangefinders 23 on the two bases 2 are then activated to measure the distance between the two bases 2 and the sides of the tunnel body 1's inner cavity, ensuring that the distances between the two bases 2 and the sides of the tunnel body 1's inner cavity are equal, thus guaranteeing that the monitoring device is located in the center of the tunnel body 1's inner cavity. Then, the hydraulic cylinder 21 is activated to move the support legs 22 downwards, using the four support legs 22 to support the device. Simultaneously, the bases 2, support plates 4, arc-shaped frames 5, and multiple contact columns 7 are pushed upwards. At the same time, multiple electric telescopic rods 10 are activated to move multiple telescopic cylinders 11 and multiple contact columns 7 outwards, causing the contact sensors 8 on the contact columns 7 to contact the arch surface of the tunnel body 1's inner cavity. Simultaneously, the top surface of the contact columns 7 also contacts the inner side of the arch surface of the tunnel body 1's inner cavity. Finally, when the tunnel body 1... When the top arch deforms, the fitting column 7 will be pressed and move downward. The distance sensor 15 detects the downward movement of the piston plate 13. At this time, the control panel 18 controls the buzzer 19 to make a buzzing sound to remind the staff.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A tunnel arch deformation monitoring mechanism for tunnel construction, comprising a tunnel body (1), characterized in that: The inner side of the tunnel body (1) is provided with two bases (2). Two self-locking casters (9) are fixedly installed on the bottom surface of the two bases (2). The bottom ends of the two self-locking casters (9) are in contact with the bottom surface of the inner cavity of the tunnel body (1). Support plates (4) are fixedly connected to the top surface of the two bases (2). Multiple arc-shaped frames (5) are fixedly connected to the top of the two support plates (4). Multiple telescopic mechanisms (6) are provided on the multiple arc-shaped frames (5). The top of the multiple telescopic mechanisms (6) is provided with a contact column (7). The top of the multiple contact columns (7) is provided with a contact sensor (8). Support mechanisms (3) are provided at both ends of the base (2). Two laser rangefinders (23) are fixedly installed on the outer side of the two bases (2).

2. The tunnel arch deformation monitoring mechanism for tunnel construction according to claim 1, characterized in that: The telescopic mechanism (6) includes an electric telescopic rod (10) fixedly installed on an arc frame (5). The top end of the electric telescopic rod (10) is fixedly connected to a telescopic cylinder (11). The bottom surface of the inner cavity of the telescopic cylinder (11) is fixedly connected to a spring (12). The top end of the spring (12) is fixedly connected to a piston plate (13). The top surface of the piston plate (13) is fixedly connected to a telescopic column (14). The top end of the telescopic column (14) is movably sleeved to the outside of the telescopic cylinder (11) and connected to a fitting column (7). The bottom surface of the inner cavity of the telescopic cylinder (11) is fixedly installed with a distance measuring sensor (15).

3. The tunnel arch deformation monitoring mechanism for tunnel construction according to claim 2, characterized in that: The support mechanism (3) includes a mounting base (20) fixedly connected to the end face of the base (2). A hydraulic cylinder (21) is fixedly installed on the mounting base (20). A support foot (22) is fixedly connected to the output end of the hydraulic cylinder (21). The bottom surface of the support foot (22) is in contact with the bottom surface of the tunnel body (1).

4. The tunnel arch deformation monitoring mechanism for tunnel construction according to claim 3, characterized in that: A buzzer (19) is fixedly installed on the side of one of the support plates (4), and a control panel (18) is fixedly installed on the side of another support plate (4). The control panel (18) is electrically connected to the buzzer (19), the laser rangefinder (23), the hydraulic cylinder (21), the contact sensor (8), the electric telescopic rod (10), and the range sensor (15).

5. A tunnel arch deformation monitoring mechanism for tunnel construction according to claim 4, characterized in that: The inner sides of the two bases (2) are provided with mounting slots (16), and the inner cavity of one of the mounting slots (16) is provided with a storage battery (17). The storage battery (17) is electrically connected to the control panel (18), the laser rangefinder (23), the buzzer (19), the hydraulic cylinder (21), the contact sensor (8), the electric telescopic rod (10), and the distance sensor (15).

6. A tunnel arch deformation monitoring mechanism for tunnel construction according to claim 2, characterized in that: The side of the piston plate (13) is in contact with the inner wall of the telescopic cylinder (11).

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