Calibration device for tunnel surrounding rock deformation monitoring system

Abstract

The utility model discloses a calibration device for a tunnel surrounding rock deformation monitoring system, and the device comprises a calibration clamp which comprises a clamp bottom plate and two cam assemblies, the clamp bottom plate is provided with two through holes penetrating through the clamp bottom plate, and each cam assembly is disposed in the corresponding through hole in a penetrating manner; the calibration block, the cam assembly and the clamp bottom plate are rotationally connected, so that the calibration block is detachably fixed between the cam assembly and the clamp bottom plate. When the calibration device is used, the calibration block is fixed through the cam assembly and the clamp bottom plate, and then the calibration device is integrally installed on the inner wall of the tunnel, so that the tunnel surrounding rock deformation monitoring system can be calibrated and verified by means of the calibration device; when the tunnel surrounding rock deformation monitoring system carries out deformation monitoring on the tunnel, the accuracy of monitoring data is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and in particular relates to a calibration device for a tunnel surrounding rock deformation monitoring system. Background Art

[0002] During the construction or operation of a tunnel or urban subway, the cross-section of the tunnel will undergo certain deformation due to the influence of external forces, which will reduce the safety reliability and stability of the tunnel structure and even threaten the safety of line driving. Therefore, real-time understanding of this deformation is of great significance for the safety monitoring of the tunnel.

[0003] To address this problem, technicians will deploy measurement equipment in the tunnel for monitoring. However, the existing measurement equipment often cannot measure the deformation data of the tunnel in real time and accurately. Moreover, the accuracy of the measurement data will be further reduced when the measurement equipment is damaged by long-term use or accidental collision. Therefore, how to keep the monitoring data of the measurement equipment accurate in real time has become an important research topic. Utility Model Content

[0004] The utility model provides a calibration device for a tunnel surrounding rock deformation monitoring system, which solves the problem that the monitoring data of the existing measuring equipment is not accurate due to long-term use or accidental collision damage when monitoring the deformation of the tunnel.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is to provide a calibration device for a tunnel surrounding rock deformation monitoring system, including: a calibration fixture, the calibration fixture includes a fixture base plate and two cam assemblies, the fixture base plate is provided with two through holes penetrating the fixture base plate, and each of the cam assemblies is inserted into the corresponding through hole; a calibration block, the cam assembly is rotatably connected to the fixture base plate to allow the calibration block to be detachably fixed between the cam assembly and the fixture base plate.

[0006] In some embodiments, the calibration block includes a block body and fixed plates respectively fixed at both ends of the block body, and the front end of the fixed plate is provided with an inwardly recessed slide groove, and the distance between the two slide grooves is equal to the distance between the two through holes, so as to allow the cam assembly to pass through the slide groove and be inserted into the corresponding through hole.

[0007] In some embodiments, the length of the slide groove is half the length of the fixed plate.

[0008] In some embodiments, the gauge block body and the fixing plate are integrally formed, and the height of the gauge block body is not less than the height of the fixing plate.

[0009] In some embodiments, the cam assembly includes a cam handle, a cam screw, a cam shaft and a cam gasket, wherein the cam shaft is used to connect the fixed end of the cam handle and the top end of the cam screw, and the cam gasket is sleeved on the upper part of the cam screw and is located below the fixed end of the cam handle.

[0010] In some embodiments, the cam handle includes a handle body and two handle connecting parts arranged parallel to each other at the front end of the handle body. A first connecting hole is opened inside the handle connecting part to allow the cam shaft to pass through the first connecting hole, thereby connecting the cam screw rod to the cam handle.

[0011] In some embodiments, the cam screw includes a cam head arranged at the top and a cam straight rod fixedly connected to the cam head, the cam pad is sleeved on the upper part of the cam straight rod and is located below the cam head, and a second connecting hole is opened inside the cam head to allow the cam shaft to pass through the second connecting hole, thereby connecting the cam screw to the cam handle.

[0012] In some embodiments, the diameter of the cam straight rod is matched with the diameter of the through hole to allow the cam straight rod to pass through the corresponding through hole.

[0013] In some embodiments, a vertical first waist-shaped hole is provided at one end of the clamp bottom plate, and a horizontal second waist-shaped hole is provided at the other end of the clamp bottom plate. The clamp bottom plate is fixed to the inner wall of the tunnel through the first waist-shaped hole and the second waist-shaped hole.

[0014] In some embodiments, the lower surface of the fixture bottom plate is recessed inward to form a bottom plate recessed portion.

[0015] The beneficial effects of the utility model are as follows: the utility model discloses a calibration device for a tunnel surrounding rock deformation monitoring system, comprising: a calibration fixture, the calibration fixture comprising a fixture bottom plate and two cam assemblies, the fixture bottom plate is provided with two through holes penetrating the fixture bottom plate, and each cam assembly is inserted into a corresponding through hole; a calibration block, the cam assembly is rotatably connected to the fixture bottom plate to allow the calibration block to be detachably fixed between the cam assembly and the fixture bottom plate. When the calibration device of the utility model is in use, the calibration block is fixed by the cam assembly and the fixture bottom plate, and then the calibration device is installed as a whole on the inner wall of the tunnel, and the calibration device can be used to calibrate and verify the tunnel surrounding rock deformation monitoring system, thereby ensuring the accuracy of the monitoring data when the tunnel surrounding rock deformation monitoring system performs deformation monitoring on the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a calibration device for a tunnel surrounding rock deformation monitoring system according to the utility model;

[0017] Figure 2 It is a structural schematic diagram of another state of a calibration device for a tunnel surrounding rock deformation monitoring system according to the utility model;

[0018] Figure 3 It is an exploded schematic diagram of a calibration device for a tunnel surrounding rock deformation monitoring system of the utility model;

[0019] Figure 4 It is a structural schematic diagram of a calibration block in a calibration device for a tunnel surrounding rock deformation monitoring system of the utility model;

[0020] Figure 5 It is a structural schematic diagram of a fixture bottom plate in a calibration device for a tunnel surrounding rock deformation monitoring system of the utility model;

[0021] Figure 6 It is a structural schematic diagram of a cam assembly in a calibration device for a tunnel surrounding rock deformation monitoring system of the utility model;

[0022] Figure 7 The utility model is a schematic diagram of an exploded view of a cam assembly in a calibration device for a tunnel surrounding rock deformation monitoring system. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0025] like Figures 1 to 3 As shown, the utility model provides a calibration device for a tunnel surrounding rock deformation monitoring system, comprising:

[0026] The calibration fixture 1 comprises a fixture base plate 3 and two cam assemblies 4 . The fixture base plate 3 is provided with two through holes 31 penetrating the fixture base plate 3 . Each cam assembly 4 is inserted into a corresponding through hole 31 .

[0027] The calibration block 2 , the cam assembly 4 and the fixture base plate 3 are rotatably connected to allow the calibration block 2 to be detachably fixed between the cam assembly 4 and the fixture base plate 3 .

[0028] When the calibration device of the utility model is in use, the calibration block 2 is fixed by the cam assembly 4 and the clamp base plate 3, and then the calibration device is installed as a whole on the inner wall of the tunnel. The calibration device can be used to calibrate and verify the tunnel surrounding rock deformation monitoring system, thereby ensuring the accuracy of the monitoring data of the tunnel surrounding rock deformation monitoring system when monitoring the deformation of the tunnel.

[0029] Combine the following Figures 1 to 7 , the above calibration device is described in detail with a specific embodiment.

[0030] In this embodiment, reference Figures 1 to 3 The calibration device includes a calibration fixture 1 and a calibration block 2. The calibration fixture 1 includes a fixture base plate 3 and two cam assemblies 4. The fixture base plate 3 is provided with two through holes 31 penetrating the fixture base plate 3, and each cam assembly 4 is inserted into a corresponding through hole 31. The cam assembly 4 is rotatably connected to the fixture base plate 3 to allow the calibration block 2 to be detachably fixed between the cam assembly 4 and the fixture base plate 3.

[0031] Further, such as Figure 4 As shown, the calibration block 2 includes a block body 21 and fixing plates 22 respectively fixed at both ends of the block body 21 . The block body 21 and the fixing plates 22 are integrally formed, and the height of the block body 21 is not less than the height of the fixing plates 22 .

[0032] Specifically, in the present embodiment, the material of the calibration block 2 is metal; the length of the calibration block 2 is 180 mm and the width is 80 mm; the height of the fixed plate 22 is 10 mm, and the height of the block body 21 is not lower than the height of the fixed plate 22. The height of the block body 21 can be set individually according to the needs of calibration and verification. In the present application, the height specifications of the block body 21 are set to four types, namely 10 mm, 30 mm, 50 mm and 100 mm.

[0033] Furthermore, the front end of the fixed plate 22 is provided with an inwardly recessed slide groove 221, the length of the slide groove 221 is half of the length of the fixed plate 22; the distance between the two slide grooves 221 is equal to Figure 3 The distances between the two through holes 31 are equal to allow the cam assembly 4 to pass through the slide slot 221 and be disposed in the corresponding through hole 31 .

[0034] Specifically, in this embodiment, the length of the slide groove 221 is half the length of the fixed plate 22, so that the position of the bottom of the slide groove 221 can be aligned with the bottom of the fixed plate 22. Figure 3 The position of the through hole 31 corresponds to that of Figure 2As shown, when the calibration block 2 is fixed, it can be completely fixed on the fixture bottom plate 3 without causing the edge of the calibration block 2 to be exposed.

[0035] Further, such as Figure 6 As shown, the cam assembly 4 includes a cam handle 41, a cam screw 42, a cam shaft 43 and a cam pad 44. Figure 7 The cam handle 41 includes a handle body 411 and two handle connecting parts 412 arranged parallel to each other at the front end of the handle body 411, and a first connecting hole 413 is opened inside the handle connecting part 412. The cam screw rod 42 includes a cam head 421 arranged at the top and a cam straight rod 422 fixedly connected to the cam head 421, and a second connecting hole 423 is opened inside the cam head 421.

[0036] Specifically, the assembly process of the cam assembly 4 is as follows: the cam head 421 is placed between the two handle connecting parts 412, so that the second connecting hole 423 is aligned with the two first connecting holes 413, and the cam shaft 43 is passed through one of the first connecting holes 413, the second connecting hole 423 and the other first connecting hole 413 in sequence, so that the cam head 421 and the handle connecting part 412 are fixedly connected together, that is, the cam screw rod 42 and the cam handle 41 are connected; further, the cam pad 44 is sleeved on the cam straight rod 422 from the bottom, and the position of the cam pad 44 is just below the handle connecting part 412, and the assembly is completed as shown in FIG. Figure 6 shown.

[0037] In this embodiment, the diameter of the cam straight rod 422 is Figure 3 The diameter of the middle through hole 31 is adapted to allow the cam straight rod 422 to pass through the corresponding through hole 31 .

[0038] Further, such as Figure 5 As shown, a vertical first waist-shaped hole 32 is provided at one end of the clamp bottom plate 3, and a horizontal second waist-shaped hole 33 is provided at the other end of the clamp bottom plate 3. The clamp bottom plate 3 is fixed on the inner wall of the tunnel through the first waist-shaped hole 32 and the second waist-shaped hole 33; the lower surface of the clamp bottom plate 3 is recessed inward to form a bottom plate recessed portion 34.

[0039] Specifically, in this embodiment, the material of the fixture bottom plate 3 is also metal; the upper surface of the fixture bottom plate 3 (i.e. Figure 4 The side in contact with the quantitative block 2 is smooth and flat without any deformation, protrusion, depression or burr.

[0040] In summary, combined Figures 1 to 7 When the calibration device of the utility model is used, it is first assembled:

[0041] The cam assembly 4 is assembled as described above. After the assembly is completed, the cam straight rod 422 of the cam assembly 4 is pressed Figure 1 The cam block 44 is inserted into the corresponding through hole 31 in the direction shown, while the height of the cam block 44 from the fixture bottom plate 3 is kept at 10.5 mm.

[0042] Align the slide groove 221 of the calibration block 2 with the cam straight rod 422 , with the lower surface of the calibration block 2 attached to the fixture bottom plate 3 , and slide the calibration block 2 until the bottom of the slide groove 221 of the calibration block 2 contacts the cam straight rod 422 .

[0043] The two cam handles 41 are rotated outwards respectively, and the calibration block 2 is pressed against the fixture bottom plate 3 by the cam pad 44 for fixing. Figure 2 shown.

[0044] Reserve two screws at the corresponding positions on the inner wall of the tunnel. Figure 2 The assembled calibration device is put on the corresponding screw through the first waist-shaped hole 32 and the second waist-shaped hole 33 on the fixture bottom plate 3, and is fixed to the inner wall (top wall or side wall) of the tunnel using a nut, and the installation is completed.

[0045] When in use, the calibration device is fixed on the inner wall of the tunnel, and calibration blocks 2 of different height specifications are used to simulate different deformation degrees of the inner wall of the tunnel. At the same time, the tunnel surrounding rock deformation monitoring system is used to monitor the tunnel after the calibration device is installed to obtain the deformation monitoring result; the deformation monitoring result is compared with the height of the calibration block 2 in the actual calibration device to judge the accuracy of the deformation monitoring result; if the error between the two is within the specified error range, the calibration is completed, if the error between the two exceeds the specified error range, the tunnel surrounding rock deformation monitoring system needs to be calibrated until it meets the specified error range.

[0046] By fixing the calibration device on the inner wall of the tunnel and simulating the deformation of the inner wall of the tunnel, the tunnel surrounding rock deformation monitoring system can be calibrated in a targeted manner, thereby improving the accuracy of the monitoring data of the tunnel surrounding rock deformation monitoring system, allowing construction personnel to grasp the internal conditions of the tunnel at any time and ensuring the safety of the tunnel during use.

[0047] It can be seen that the utility model discloses a calibration device for a tunnel surrounding rock deformation monitoring system, including: a calibration fixture, the calibration fixture includes a fixture bottom plate and two cam assemblies, the fixture bottom plate is provided with two through holes penetrating the fixture bottom plate, and each cam assembly is inserted into the corresponding through hole; a calibration block, the cam assembly is rotatably connected to the fixture bottom plate to allow the calibration block to be detachably fixed between the cam assembly and the fixture bottom plate. When the calibration device of the utility model is in use, the calibration block is fixed by the cam assembly and the fixture bottom plate, and then the calibration device is installed as a whole on the inner wall of the tunnel. The calibration device can be used to calibrate and verify the tunnel surrounding rock deformation monitoring system, thereby ensuring the accuracy of the monitoring data when the tunnel surrounding rock deformation monitoring system performs deformation monitoring on the tunnel.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A calibration device for a tunnel surrounding rock deformation monitoring system, characterized in that: include: A calibration fixture, the calibration fixture comprising a fixture bottom plate and two cam assemblies, the fixture bottom plate is provided with two through holes penetrating the fixture bottom plate, and each of the cam assemblies is inserted into a corresponding through hole; The calibration block is rotatably connected to the fixture base plate to allow the calibration block to be detachably fixed between the cam assembly and the fixture base plate.

2. The calibration device according to claim 1, characterized in that: The calibration block includes a block body and fixed plates respectively fixed at both ends of the block body, and an inwardly recessed slide groove is provided at the front end of the fixed plate. The distance between the two slide grooves is equal to the distance between the two through holes, so as to allow the cam assembly to pass through the slide groove and penetrate into the corresponding through hole.

3. The calibration device according to claim 2, characterized in that: The length of the slide groove is half of the length of the fixed plate.

4. The calibration device according to claim 2, characterized in that: The gauge block body and the fixing plate are integrally formed, and the height of the gauge block body is not lower than the height of the fixing plate.

5. The calibration device according to claim 1, characterized in that: The cam assembly includes a cam handle, a cam screw, a cam shaft and a cam pad. The cam shaft is used to connect the fixed end of the cam handle and the top end of the cam screw. The cam pad is sleeved on the upper part of the cam screw and is located below the fixed end of the cam handle.

6. The calibration device according to claim 5, characterized in that: The cam handle includes a handle body and two handle connecting parts arranged parallel to each other at the front end of the handle body. A first connecting hole is opened inside the handle connecting part to allow the cam shaft to pass through the first connecting hole, thereby connecting the cam screw rod to the cam handle.

7. The calibration device according to claim 5, characterized in that: The cam screw includes a cam head arranged at the top and a cam straight rod fixedly connected to the cam head, the cam pad is sleeved on the upper part of the cam straight rod and is located below the cam head, and a second connecting hole is opened inside the cam head to allow the cam shaft to pass through the second connecting hole, thereby connecting the cam screw with the cam handle.

8. The calibration device according to claim 7, characterized in that: The diameter of the cam straight rod is matched with the diameter of the through hole to allow the cam straight rod to pass through the corresponding through hole.

9. The calibration device according to claim 1, characterized in that: A vertical first waist-shaped hole is arranged at one end of the clamp bottom plate, and a horizontal second waist-shaped hole is arranged at the other end of the clamp bottom plate. The clamp bottom plate is fixed on the inner wall of the tunnel through the first waist-shaped hole and the second waist-shaped hole.

10. The calibration device according to any one of claims 1 to 9, characterized in that: The lower surface of the clamp bottom plate is recessed inwardly to form a bottom plate recessed portion.

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