Deformation monitoring device for subway tunnel

Abstract

The utility model relates to the technical field of tunnel monitoring equipment, and discloses a deformation monitoring device of a subway tunnel, which comprises a monitoring instrument body and two arc-shaped supporting rings matched with the inner arc-shaped side wall of a tunnel main body, the opposite end parts of the two arc-shaped supporting rings are provided with connecting units used for connecting the two arc-shaped supporting rings, and the two arc-shaped supporting rings are connected through the connecting units. Rolling grooves are formed in the opposite side faces of the two arc-shaped supporting rings, first elastic pressing wheels with elasticity are tightly attached to the arc-shaped inner walls of the arc-shaped supporting rings, the two ends of each first elastic pressing wheel are rotationally connected with first fixing plates through rotating shafts, and second elastic pressing wheels with elasticity are movably connected into the two rolling grooves. According to the tunnel monitoring device, the arc-shaped supporting rings, the first elastic pressing wheel, the second elastic pressing wheel and the driving motor are arranged, the first elastic pressing wheel is driven to rotate after the driving motor is started, then the monitor body is driven to move along the two arc-shaped supporting rings, the inner side wall of the tunnel body is monitored in an all-around mode, and the monitoring effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel monitoring equipment, in particular to a deformation monitoring device for a subway tunnel. Background Art

[0002] Subways basically run in tunnels. After the subway is put into use, the safety performance of the tunnel is very important. If an accident such as a landslide occurs, the consequences will be disastrous. Therefore, it is necessary to install deformation monitoring devices inside the subway tunnel to monitor the deformation status inside the tunnel in real time.

[0003] In order to improve the monitoring effect of subway tunnel deformation, the prior art has made many improvements to the deformation monitoring device of subway tunnels, such as the patent with patent publication number CN212300311U, which discloses a deformation monitoring device for subway tunnels, including a mounting fixing mechanism and an automated total station, the mounting fixing mechanism includes a mounting plate, fixing bolts, struts, and an equipment frame, the automated total station includes a key panel, a monitoring body, and a handle, the surface of the mounting plate is slidably mounted with an electric pulley and a fixed slider, the top surface of the equipment frame is mounted with a rotating motor and a control box, the top of the rotating motor is connected with a sealing sleeve, and the output electrical signal of the control box is connected with a control terminal. The utility model realizes remote control of the rotating motor and the action execution mechanism of the electric pulley by using a control box that can remotely send and receive signals to form a control mechanism, thereby eliminating the trouble of manual field adjustment and reducing maintenance costs, and the automatic adjustment of the installation level of the automated total station can be realized through a horizontal sensor, automatic calibration, and automation.

[0004] The above patent has obvious beneficial effects, but still has the following shortcomings in actual operation:

[0005] In the above-mentioned comparative document, a monitor for monitoring tunnel deformation is installed on the inner wall of the tunnel through a mounting plate and an equipment frame, and the tunnel is monitored in real time through the monitor. However, in reality, the tunnel of the subway has a large span and is arc-shaped, and every position in the tunnel (such as the top and side of the arc) needs to be monitored. Although the angle of the monitor can be adjusted in the above-mentioned comparative document, since the positions of the mounting plate and the equipment frame are fixed, there are still blind spots for monitoring. Therefore, the art urgently needs to improve the deformation monitoring device of the subway tunnel to solve the defects of the prior art. Summary of the invention

[0006] In view of the deficiencies of the prior art, the utility model provides a deformation monitoring device for a subway tunnel. The monitoring instrument body can move along two arc-shaped support rings to perform all-round monitoring on the inner wall of the tunnel body, thereby improving the monitoring effect.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deformation monitoring device for a subway tunnel, comprising a monitoring instrument body installed in a tunnel body, and also comprising two arc-shaped support rings adapted to the arc-shaped side walls in the tunnel body, the two arc-shaped support rings are provided with connecting units for connecting the two arc-shaped support rings at the opposite ends thereof, rolling grooves are provided on the opposite sides of the two arc-shaped support rings, the arc-shaped inner walls of the arc-shaped support rings are tightly attached to a first elastic clamping wheel with elasticity, the first elastic clamping wheel is rotatably connected to a first fixed plate at both ends through a rotating shaft, the two rolling grooves are movably connected to a second elastic clamping wheel with elasticity, the two second elastic clamping wheels are rotatably connected to a second fixed plate at opposite ends through a rotating shaft, a spring for tightening the first fixed plate and the second fixed plate is provided between the first fixed plate and the second fixed plate, a driving motor is fixedly installed on the side of one of the first fixed plates, the output end of the driving motor passes through the first fixed plate and is fixedly connected to the rotating shaft on the second elastic clamping wheel, a mounting plate is fixedly connected between the lower sides of the two first fixed plates, and the monitoring instrument body is fixedly installed on the mounting plate.

[0008] Preferably, the connecting unit includes a clamping block clamped between two arc-shaped support rings, the two ends of the two clamping blocks are dovetail-shaped, and the two arc-shaped support rings have symmetrical clamping grooves at the opposite ends that are adapted to the clamping blocks. The inner side wall of each clamping groove is fixedly connected to a threaded column that passes through the clamping block, and the side surface of the threaded column is threadedly connected to a first limiting nut for fixing the clamping block.

[0009] Preferably, the upper side surfaces of the two first fixing plates are fixedly connected with guide columns penetrating the second fixing plates, and the side surfaces of the ends of the guide columns away from the first fixing plates are threadedly connected with second limiting nuts.

[0010] Preferably, a first placement groove is opened on the side surfaces of the opposite ends of the two arc-shaped support rings, and a clamping plate adapted to the inner wall of the tunnel body is movably connected in the first placement groove. A first adjusting bolt, one end of which is threadedly connected to the inner wall of the arc-shaped support ring and rotatably connected to the clamping plate, passes through the inner wall of the arc-shaped support ring, and a third limiting nut is threadedly connected to the side surface of the first adjusting bolt.

[0011] Preferably, the side surfaces of the opposite ends of the two arc-shaped support rings are fixedly connected with symmetrical support frames, and the two symmetrical support frames are in an eight-shaped shape.

[0012] Preferably, a second placement groove is opened on the lower side of the support frame, an adjustment plate is movably connected in the second placement groove, a second adjustment bolt with one end rotatably connected to one side of the adjustment plate passes through and is threadedly connected to the side of the support frame, and a fourth limit nut is threadedly connected to the side of the second adjustment bolt.

[0013] Preferably, a plurality of cones are provided on a surface of the abutting plate away from the first adjusting bolt.

[0014] In view of the shortcomings of the prior art, the utility model provides a deformation monitoring device for a subway tunnel, which overcomes the shortcomings of the prior art. The beneficial effects of the utility model are:

[0015] 1. In the utility model, an arc-shaped support ring, a first elastic pressure wheel, a second elastic pressure wheel and a driving motor are arranged. After the driving motor is started, it drives the rotation of the first elastic pressure wheel, and then drives the monitoring instrument body to move along the two arc-shaped support rings, so as to perform all-round monitoring of the inner wall of the tunnel body and improve the monitoring effect.

[0016] 2. In the utility model, a clamping block and a clamping groove are provided, and the two ends of the clamping block are dovetail-shaped and matched with the clamping groove. When connecting the two arc-shaped support rings, the two clamping blocks are passed through the threaded column and clamped in the clamping groove. The two arc-shaped support rings can be connected by tightening the first limiting nut, which is convenient for on-site installation of the two arc-shaped support rings.

[0017] 3. In the utility model, a clamping plate, a first adjusting bolt and a third limiting nut are provided. When the connected arc support ring needs to be fixed, the clamping plate is driven to be pressed against the inner wall of the tunnel body by rotating the first adjusting bolt, and the third limiting nut is locked to limit the position of the first adjusting bolt, so that the installer can install or disassemble the arc support ring conveniently.

[0018] 4. In the utility model, a support frame, a second adjusting bolt and a fourth limiting nut are provided, and the second adjusting bolt is used to drive the adjusting plate to move downward in the second placement groove, and the arc support ring is leveled by the adjusting plate, which is convenient for the installer to install and level the arc support ring. Moreover, through the cooperation of multiple second adjusting bolts, it is convenient to adjust and connect the opposite ends of the arc support ring, so that the clamping block can be inserted into the clamping groove.

[0019] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0021] Figure 1 This is a schematic diagram of the structure of the utility model installed as a whole in the main body of the tunnel;

[0022] Figure 2This is a schematic diagram of the structure after the arc-shaped support rings in the utility model are connected;

[0023] Figure 3 It is a schematic diagram of the structure of the first elastic clamping wheel and the second elastic clamping wheel in the utility model;

[0024] Figure 4 It is a structural schematic diagram of a partial cross-section of the arc-shaped support ring and the support frame in the utility model.

[0025] In the figure: 1. Monitor body; 2. Tunnel body; 3. Arc support ring; 4. Rolling groove; 5. First elastic clamping wheel; 6. First fixing plate; 7. Second elastic clamping wheel; 8. Second fixing plate; 9. Spring; 10. Drive motor; 11. Mounting plate; 12. Clamping groove; 13. Clamping block; 14. Threaded column; 15. First limiting nut; 16. Guide column; 17. Second limiting nut; 18. First placement groove; 19. Clamping plate; 20. First adjusting bolt; 21. Third limiting nut; 22. Support frame; 23. Adjustment plate; 24. Second adjusting bolt; 25. Fourth limiting nut; 26. Second placement groove; 27. Cone. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Embodiment 1

[0028] See also Figure 1-Figure 4 A deformation monitoring device for a subway tunnel comprises a monitoring instrument body 1 installed in a tunnel body 2, and also comprises two arc-shaped support rings 3 adapted to the arc-shaped side walls in the tunnel body 2, the two arc-shaped support rings 3 are provided with connecting units for connecting the two arc-shaped support rings 3 at the facing ends, rolling grooves 4 are provided on the opposite sides of the two arc-shaped support rings 3, the arc-shaped inner walls of the arc-shaped support rings 3 are tightly attached with a first elastic clamping wheel 5 with elasticity, the two ends of the first elastic clamping wheel 5 are rotatably connected with a first fixing plate 6 through a rotating shaft, and the two rolling grooves 4 are movably connected with a first elastic clamping wheel with elasticity. An elastic second elastic clamping wheel 7, the two second elastic clamping wheels 7 are rotatably connected to a second fixed plate 8 at opposite ends through a rotating shaft, a spring 9 for tightening the first fixed plate 6 and the second fixed plate 8 is provided between the first fixed plate 6 and the second fixed plate 8, a driving motor 10 is fixedly installed on the side of a first fixed plate 6, the output end of the driving motor 10 passes through the first fixed plate 6 and is fixedly connected to the rotating shaft on the second elastic clamping wheel 7, a mounting plate 11 is fixedly connected between the lower sides of the two first fixed plates 6, and the monitor body 1 is fixedly installed on the mounting plate 11.

[0029] Specific implementation method in this embodiment: The structure of the monitoring instrument body 1 in this embodiment is similar to the existing automatic total station structure. It has an automatic calibration function and can be remotely controlled by an external main control, such as a deformation monitoring device for a subway tunnel disclosed in the patent with publication number CN212300311U. The main improvement of this embodiment is that the monitoring instrument body 1 can perform all-round monitoring of the inner wall of the tunnel body 2. In this embodiment, when the deformation of the inner wall of the tunnel body 2 needs to be monitored, two arc support rings 3 are connected and installed in the tunnel body 2 through a connecting unit, and a plurality of arc support rings 3 are installed in the tunnel body 2, and the second elastic clamping wheel 7 is installed in the rolling groove 4. As the tension of the spring 9 drives the first fixing plate 6 and the second fixing plate 8 to approach each other, the first elastic pressure wheel 5 is tightly pressed against the inner wall of the arc-shaped support ring 3, and the first elastic pressure wheel 5 and the second elastic pressure wheel 7 both have a certain elasticity. The monitor body 1 is fixedly mounted on one side of the mounting plate 11 by fasteners. The real-time deformation monitoring of the tunnel body 2 is performed through the monitor body 1. At the same time, the drive motor 10 can be remotely controlled by an external controller. After the drive motor 10 is started, its output end drives the first elastic pressure wheel 5 to rotate through the rotating shaft. Through the rotation of the first elastic pressure wheel 5, the monitor body 1 is driven to move along the two arc-shaped support rings 3, and the inner wall of the tunnel body 2 is monitored in all directions, thereby improving the monitoring effect.

[0030] Among them, the above-mentioned drive motor 10 can be purchased on the market. It is a mature technology and has been fully disclosed, so it is not repeated in the specification. The drive motor 10 is equipped with a power connection line, and it is electrically connected to the external main controller and 220V phase voltage through the power line, and the main controller can be a conventional known device such as a computer that plays a control role.

[0031] Embodiment 2

[0032] See also Figure 3 , this embodiment includes the above-mentioned embodiment, wherein the connecting unit includes a clamping block 13 clamped between two arc-shaped support rings 3, the two ends of the two clamping blocks 13 are dovetail-shaped, and the two arc-shaped support rings 3 are provided with symmetrical clamping grooves 12 at the opposite ends and adapted to the clamping blocks 13, and the inner side wall of each clamping groove 12 is fixedly connected with a threaded column 14 passing through the clamping block 13, and the side surface of the threaded column 14 is threadedly connected with a first limiting nut 15 for fixing the clamping block 13, and the upper side surfaces of the two first fixing plates 6 are fixedly connected with a guide column 16 passing through the second fixing plate 8, and the side surface of the guide column 16 away from the first fixing plate 6 is threadedly connected with a second limiting nut 17.

[0033] Specific implementation method in this embodiment: when it is necessary to connect the two arc support rings 3, the two arc support rings 3 are transported to the specified position by a transportation device, and the ends of the two arc support rings 3 are placed together, the clamping block 13 passes through the threaded column 14 and is clamped in the clamping groove 12, and the first limiting nut 15 is tightened. Since the two ends of the clamping block 13 are dovetail-shaped and adapted to the clamping groove 12, the two arc support rings 3 can be quickly connected with the first limiting nut 15 and the threaded column 14, which is convenient for the installer to install the two arc support rings 3. At the same time, since the spring 9 is in a stretched state for a long time, its elastic force will weaken. When the elastic force of the spring 9 fails or becomes smaller, it is threadedly connected to the side of the guide column 16 through the second limiting nut 17. Tightening the second limiting nut 17 can also tighten the first fixing plate 6 and the second fixing plate 8. There is no need to replace the spring 9 temporarily, thereby improving the service life of the overall device.

[0034] Implementation Three

[0035] See also Figure 4 This embodiment includes all the above embodiments, which further includes: a first placement groove 18 is opened on the side of the opposite ends of the two arc-shaped support rings 3, a clamping plate 19 adapted to the inner wall of the tunnel body 2 is movably connected in the first placement groove 18, a first adjusting bolt 20 passes through the inner wall of the arc-shaped support ring 3 and is threadedly connected to one end of the clamping plate 19 and is rotatably connected to the first adjusting bolt 20, a third limiting nut 21 is threadedly connected to the side of the first adjusting bolt 20, and a plurality of cones 27 are provided on the side of the clamping plate 19 away from the first adjusting bolt 20.

[0036] Specific implementation method in this embodiment: After the connection between the two arc support rings 3 is completed, by rotating the first adjusting bolt 20, since the first adjusting bolt 20 is threadedly connected to the arc support ring 3 and one end thereof is rotatably connected to one side of the clamping plate 19, when the first adjusting bolt 20 is rotated, the clamping plate 19 is driven to move in the first placement groove 18, and the cone 27 on one side of the clamping plate 19 is against the inner wall of the tunnel body 2. The first adjusting bolt 20 and the third limiting nut 21 are tightened, and the arc support ring 3 is fixed in the tunnel body 2 through the two clamping plates 19. It does not need to be installed through fasteners such as expansion bolts, which is convenient for installation and disassembly by installers and reduces the labor intensity of installers.

[0037] Implementation Four

[0038] See also Figure 2 and Figure 4This embodiment includes all the above embodiments, which further includes: the side surfaces of the opposite ends of the two arc-shaped support rings 3 are fixedly connected with symmetrical support frames 22, the two symmetrical support frames 22 are in an eight-shaped shape, and a second placement groove 26 is opened on the lower side of the support frame 22, and an adjustment plate 23 is movably connected in the second placement groove 26. A second adjustment bolt 24 with one end rotatably connected to one side of the adjustment plate 23 passes through and is threadedly connected to the side surface of the support frame 22, and a fourth limiting nut 25 is threadedly connected to the side surface of the second adjustment bolt 24.

[0039] The specific implementation method in this embodiment is as follows: two support frames 22 in the shape of an eight are used to improve the stability of the arc support ring 3 after installation. At the same time, if the ground inside the tunnel body 2 is uneven, the second adjusting bolt 24 is rotated, and the second adjusting bolt 24 drives the adjusting plate 23 to move downward in the second placement groove 26, and the arc support ring 3 is leveled by the adjusting plate 23. After the arc support ring 3 is leveled, the fourth limiting nut 25 is tightened to limit and fix the position of the second adjusting bolt 24, so that the installers can install and level the arc support ring 3. Moreover, through the cooperation of multiple second adjusting bolts 24, it is convenient to adjust and connect the opposite ends of the arc support ring 3, so that the clamping block 13 can be inserted into the clamping groove 12.

[0040] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A deformation monitoring device for a subway tunnel, comprising a monitoring device body (1) installed in a tunnel body (2), characterized in that: The tunnel body (2) further comprises two arc-shaped support rings (3) adapted to the inner arc-shaped side walls of the tunnel body (2); the two arc-shaped support rings (3) are provided with connecting units for connecting the two arc-shaped support rings (3) at the facing ends; the two arc-shaped support rings (3) are provided with rolling grooves (4) on the opposite sides; the arc-shaped inner walls of the arc-shaped support rings (3) are closely attached with first elastic pressure wheels (5); the first elastic pressure wheels (5) are rotatably connected to first fixing plates (6) at both ends via a rotating shaft; the two rolling grooves (4) are movably connected with second elastic pressure wheels (7); the two second elastic pressure wheels (7) are rotatably connected to the inner walls of the arc-shaped support rings (3); the first elastic pressure wheels (5) are rotatably connected to the first fixing plates (6) at both ends via a rotating shaft; the second elastic pressure wheels (7) are movably connected to the inner walls of the two rolling grooves (4); the second elastic pressure wheels (7) are movably connected to the second elastic pressure wheels (7 ... The two opposite ends of the wheel (7) are rotatably connected to a second fixed plate (8) via a rotating shaft; a spring (9) for tensioning the first fixed plate (6) and the second fixed plate (8) is provided between the first fixed plate (6) and the second fixed plate (8); a driving motor (10) is fixedly mounted on a side of the first fixed plate (6); an output end of the driving motor (10) passes through the first fixed plate (6) and is fixedly connected to a rotating shaft on the second elastic pressure wheel (7); a mounting plate (11) is fixedly connected between the lower sides of the two first fixed plates (6); and the monitor body (1) is fixedly mounted on the mounting plate (11).

2. The deformation monitoring device for a subway tunnel according to claim 1, characterized in that: The connection unit comprises a clamping block (13) clamped between two arc-shaped support rings (3), the two ends of the two clamping blocks (13) are dovetail-shaped, and the two arc-shaped support rings (3) are provided with symmetrical clamping grooves (12) adapted to the clamping blocks (13) at the opposite ends, and the inner side wall of each clamping groove (12) is fixedly connected to a threaded column (14) penetrating the clamping block (13), and the side surface of the threaded column (14) is threadedly connected to a first limiting nut (15) for fixing the clamping block (13).

3. The deformation monitoring device for a subway tunnel according to claim 1, characterized in that: A guide column (16) penetrating the second fixing plate (8) is fixedly connected to the upper side surfaces of the two first fixing plates (6), and a second limiting nut (17) is threadedly connected to the side surface of one end of the guide column (16) away from the first fixing plate (6).

4. The deformation monitoring device for a subway tunnel according to claim 1, characterized in that: A first placement groove (18) is formed on the side surfaces of the opposite ends of the two arc-shaped support rings (3), and a clamping plate (19) adapted to the inner wall of the tunnel body (2) is movably connected in the first placement groove (18). A first adjusting bolt (20) passes through the inner wall of the arc-shaped support ring (3) and is threadedly connected at one end thereof and rotatably connected to the clamping plate (19). A third limiting nut (21) is threadedly connected on the side surface of the first adjusting bolt (20).

5. The deformation monitoring device for a subway tunnel according to claim 1, characterized in that: Symmetrical support frames (22) are fixedly connected to the side surfaces of the opposite ends of the two arc-shaped support rings (3), and the two symmetrical support frames (22) are in an eight-shaped shape.

6. The deformation monitoring device for a subway tunnel according to claim 5, characterized in that: A second placement groove (26) is provided on the lower side of the support frame (22), an adjustment plate (23) is movably connected in the second placement groove (26), a second adjustment bolt (24) having one end rotatably connected to one side of the adjustment plate (23) is passed through and threadedly connected to the side of the support frame (22), and a fourth limiting nut (25) is threadedly connected to the side of the second adjustment bolt (24).

7. The deformation monitoring device for a subway tunnel according to claim 4, characterized in that: A plurality of cones (27) are provided on a surface of the abutting plate (19) away from the first adjusting bolt (20).

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