Prism integrated shield tunnel measuring point lossless mounting device

Abstract

The utility model relates to a prism integrated shield tunnel measuring point lossless installation device which comprises a three-jaw female seat, a hoop, a prism support, a prism seat and a prism. The prism is installed on the prism table, the prism table is installed at the top end of the prism support, and the bottom end of the prism support is fixed to the top of the three-jaw female base. And the bottom of the three-jaw female seat is sleeved outside the existing bolt and is fastened through a peripheral hoop. According to the utility model, lossless installation can be carried out based on bolts of any model reserved in the construction process of shield engineering, and the duct piece does not need to be punched, so that the damage to the appearance and the concrete structure of the tunnel duct piece by the existing installation mode is avoided, and the potential safety hazard to the duct piece material by the traditional installation method is avoided; the installation purpose can be achieved through field tests; in addition, the device combines a lossless installation assembly and the prism, does not need to assemble the prism additionally, is convenient to install and low in learning cost, and shortens the monitoring construction period.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnel deformation monitoring, in particular to a prism-integrated shield tunnel measuring point non-destructive installation device. Background Art

[0002] The shield tunneling method is one of the most advanced construction methods for underground tunnels. It uses a shield machine to excavate underground. Under the protection of the shield, excavation and lining operations are safely carried out within the machine, thus constructing the tunnel. It is suitable for construction under a variety of engineering hydrogeological conditions. The segments are one of the key components of shield tunnels, and their deformation is directly related to the stability and safety of the tunnel. Therefore, during shield tunnel construction, segment deformation monitoring is necessary to promptly detect and address potential cracks, deformation, and other problems. Monitoring and analyzing segment deformation provides important data support for subsequent maintenance and management.

[0003] Continuously monitoring the health of shield segments requires arranging measuring points on the segments and installing measuring devices at these points. Using a level or total station, deformation monitoring data on the segments can be quickly and in real time acquired. However, existing shield tunnel measuring points require drilling holes in the sidewalls of the segments and securing them with screws. This inevitably damages the segments' appearance and negatively impacts the concrete structure. The vibrations generated during drilling are also detrimental to the safety of the segment material. Furthermore, the prisms and measuring devices must be installed separately, making the arrangement of measuring points more difficult.

[0004] Therefore, it is necessary to propose new measures to overcome the above-mentioned defects. Summary of the Invention

[0005] The purpose of the utility model is to provide a prism-integrated shield tunnel measuring point non-destructive installation device to avoid the adverse effects of drilling installation on the pipe segments and solve the problem of increased difficulty in arranging measuring points caused by the additional installation of prisms.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0007] A prism-integrated non-destructive installation device for shield tunnel measuring points, the device comprising a three-claw base, a hoop, a prism bracket, a prism base, and a prism;

[0008] The prism is mounted on the prism seat, the prism seat is mounted on the top of the prism bracket, and the bottom end of the prism bracket is fixed on the top of the three-claw female seat;

[0009] The bottom of the three-claw female seat is externally sleeved on the existing bolt and is fastened by the ring hoop on the outer periphery.

[0010] Furthermore, the prism bracket is a curved bracket, the bottom of the prism bracket is vertically arranged, and the top of the prism bracket is horizontally arranged.

[0011] Furthermore, a connecting shaft is provided on the top of the prism bracket, and a connecting hole is provided on the side of the prism seat. The prism seat is installed on the connecting shaft from the side through the connecting hole and is fastened by a fixing nut on the outer periphery of the prism seat side.

[0012] Furthermore, a reversing gear is provided on the connecting shaft.

[0013] Furthermore, a chuck is provided at the bottom of the prism bracket, the chuck is located on the top of the three-claw mother seat, and is fastened by an upper limit nut on the periphery;

[0014] The top of the upper limit nut is provided with a ring cover, and the ring cover covers the top of the chuck.

[0015] Furthermore, the bottom of the three-claw base has three inward-retracted L-shaped claws, and the three L-shaped claws are closely attached to the outside of the existing bolt and are fastened by the outer ring hoop.

[0016] Furthermore, the top of the three-claw female seat is a connecting ring with external threads, and the middle is a pressure ring;

[0017] The upper limit nut is installed on the upper part of the connecting ring, and the lower part of the connecting ring and the outside of the pressure ring are provided with a lower limit nut.

[0018] Furthermore, an internal threaded hole capable of screwing into the existing bolt is provided on the central axis of the connecting ring.

[0019] Furthermore, a downwardly protruding snap ring is provided at the bottom of the chuck, and correspondingly, a downwardly recessed ring groove is provided at the top of the connecting ring, and the snap ring is embedded in the ring groove.

[0020] Furthermore, the top outer edge of the hoop is provided with an upwardly protruding ring platform, and correspondingly, the outer side of the bottom of the lower limit nut is provided with an outwardly protruding clamping platform;

[0021] The lower limit nut is located above the ring hoop, the bottom of the lower limit nut is located on the inner side of the ring platform, and the clamping platform is located on the top of the ring platform.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The utility model provides a prism-integrated shield tunnel measuring point non-destructive installation device, which can be non-destructively installed based on any type of bolts retained during the construction of the shield project. There is no need to drill holes in the pipe segments, which avoids the damage to the appearance and concrete structure of the tunnel pipe segments caused by the existing installation method, and circumvents the safety hazards caused by traditional installation methods to the pipe segment materials. After field tests, the installation purpose can be achieved.

[0024] In addition, the device of the present invention combines the non-destructive installation component with the prism, and there is no need to assemble the prism separately. The installation is convenient, the learning cost is low, and the monitoring construction period is shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0026] Figure 1 It is a front structural diagram of the present utility model.

[0027] Figure 2 It is a back structural diagram of the utility model.

[0028] Figure 3 It is a side structural diagram of the utility model.

[0029] Figure 4 It is a planar structural diagram of the present utility model.

[0030] Figure 5 It is a bottom structure diagram of the utility model.

[0031] Figure 6 yes Figure 3 AA section view in.

[0032] Figure 7 It is a three-dimensional structural diagram of the utility model.

[0033] Figure 8 It is an exploded structural diagram of the present utility model.

[0034] Figure 9 This is a side structural diagram of the three-claw mother seat.

[0035] Figure 10 This is another side structural diagram of the three-claw mother seat.

[0036] Figure 11 This is the end face structure diagram of the three-claw nut.

[0037] Figure 12 This is a three-dimensional structural diagram of the prism bracket.

[0038] The symbols in the figure are:

[0039] 1-prism seat, 2-prism bracket, 3-prism, 4-upper limit nut, 5-three-claw nut, 6-lower limit nut, 7-ring, 8-installation screw, 9-prism seat side fixing nut, 10-existing bolt;

[0040] 21-chuck, 22-connecting shaft, 23-reversing gear, 24-snapping ring;

[0041] 41-ring cover;

[0042] 51-L-shaped claw, 52-pressure ring, 53-connecting ring, 54-ring cavity, 55-internal threaded hole;

[0043] 61-card table;

[0044] 71-Ring Taiwan. DETAILED DESCRIPTION

[0045] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate 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 herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0046] In the description of the present invention, it should be understood that the terms "central axis", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0047] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0048] In a specific embodiment, Figure 1 The direction from top to bottom is defined as vertical, Figure 1 The left-to-right direction is defined as horizontal.

[0049] To monitor the safety of shield tunnel segments, measuring points need to be set up on the inner wall of the lining for installing measuring instruments to collect monitoring information. The utility model provides a prism-integrated shield tunnel measuring point non-destructive installation device. The device can be installed using existing bolts 10 in the lining, eliminating the need for destructive operations such as drilling holes in the segments. This achieves the purpose of non-destructive installation without any impact on on-site construction and subsequent operations. In addition, the prism assembly is directly integrated into the device, eliminating the need for separate prism installation, resulting in higher installation efficiency.

[0050] Specifically, such as Figure 1-8 The device includes, from bottom to top, a three-claw female seat 5, a hoop 7, a lower limit nut 6, an upper limit nut 4, a prism bracket 2, a prism seat 1 and a prism 3.

[0051] The combination of the prism bracket 2, prism seat 1, and prism 3 forms the prism assembly, located at the top of the entire device. The top of the prism seat 1 features a mounting screw 8 for installing and removing the prism seat 1 and preventing it from falling off. The prism 3 is mounted on the side of the prism seat 1, and the prism seat 1 is mounted on the top of the prism bracket 2. The prism bracket 2 is a curved bracket, a nearly L-shaped cylindrical support column with a vertical bottom and a horizontal top, curving to one side from bottom to top with a smooth transition. This curved bracket design avoids obstruction from hand holes, allowing the prism 3 to be fully exposed and reducing the height of the overall structure. A connecting shaft 22 is provided at the top of the prism bracket 2. The end of the connecting shaft 22 closest to the prism bracket 2 has external threads and is arranged horizontally. Accordingly, a connecting hole is provided on the side of the prism seat 1, through which the prism seat 1 is mounted to the connecting shaft 22 from the side and secured with a peripheral fixing nut 9 on the side of the prism seat. The prism seat 1 and the prism 3 do not need to be assembled manually, and the finished product is pre-assembled. After loosening the fixing nut 9 on the side of the prism seat to a certain extent, the prism seat 1 can be rotated 360 degrees in the vertical plane.

[0052] In addition, if Figure 12 A reversing gear 23 is provided on the connecting shaft 22. There are two reversing gears 23 on the same axis in the front and rear with opposite directions. Each reversing gear 23 has a total of 11 teeth, and the interval angle that can be changed is 360° / 11.

[0053] The bottom end of the prism bracket 2 is fixed to the top of the three-claw nut 5. Specifically, a chuck 21 is provided at the bottom of the prism bracket 2, and the diameter of the chuck 21 is larger than the diameter of its upper structure. The chuck 21 is located at the top of the three-claw nut 5 and is fastened by the upper limit nut 4 on the periphery. The top of the upper limit nut 4 has a ring cover 41, and the ring cover 41 has a central opening. The bottom end of the prism bracket 2 is located in the hole, and the ring cover 41 covers the top of the chuck 21. The upper limit nut 4 plays the role of fixing the prism bracket 2. At the same time, after loosening the upper limit nut 4 to a certain extent, the chuck 21 can be rotated under the ring cover 41, so that the prism bracket 2 can rotate 360 degrees in the horizontal plane.

[0054] The bottom of the three-claw female seat 5 is placed outside the existing bolt 10 and is fastened by the outer ring hoop 7. Figure 9-11 The bottom of the three-claw base 5 has three inward-retracted L-shaped claws 51, which adopt a bionic claw structure and can firmly grasp and fix the existing bolt 10. The three L-shaped claws 51 are close to the outside of the existing bolt 10 and are fastened by the outer ring hoop 7. There is a gap between the three L-shaped claws 51, which allows the L-shaped claws 51 to move freely in the radial direction within a certain range. The top of the three-claw base 5 is a connecting ring 53 with an external thread, and the middle is a pressure ring 52. The pressure ring 52 retracts inward and presses on the top of the existing bolt 10. The upper limit nut 4 is installed on the upper part of the connecting ring 53, and the lower limit nut 6 is provided on the lower part of the connecting ring 53 and outside the pressure ring 52.

[0055] In addition, an internal threaded hole 55 is provided on the central axis of the connecting ring 53, which can be screwed into the existing bolt 10. During installation, the top of the existing bolt 10 is screwed into the internal threaded hole 55, and the connection is tighter.

[0056] The outer wall of the L-shaped claw 51 slopes outward from top to bottom, correspondingly, the inner wall of the hoop 7 slopes outward from top to bottom. When the lower limit nut 6 is rotated, it moves downward and pushes the hoop 7 downward. The hoop 7 continuously applies pressure toward the center of the L-shaped claw 51, tightening the bottom of the three-claw nut 5 to the existing bolt 10. This structure allows for flexible installation space at the bottom of the device, adapting it to all existing bolt types in shield engineering.

[0057] In other embodiments, a downwardly protruding snap ring 24 is further provided at the bottom of the chuck 21. Correspondingly, a downwardly recessed ring groove is provided at the top of the connecting ring 53. The snap ring 24 is embedded in the ring groove to limit each other, making the connection between the upper and lower structures more reliable.

[0058] In other embodiments, the top outer edge of the hoop 7 is provided with an upwardly protruding annular platform 71, and correspondingly, the bottom outer side of the lower limit nut 6 is provided with an outwardly protruding clamping platform 61. The lower limit nut 6 is located above the hoop 7, with the bottom of the lower limit nut 6 located inside the annular platform 71, and the clamping platform 61 located on top of the annular platform 71, which can also make the connection between the upper and lower structures more reliable.

[0059] The specific installation process of this device is as follows:

[0060] (1) First, buckle the three-claw nut 5 onto the nut of the existing bolt 10;

[0061] (2) Buckle the hoop 7 onto the outside of the L-shaped claw 51 of the three-claw nut 5;

[0062] (3) Insert the lower limit nut 6 onto the thread of the connecting ring 53 of the three-claw nut 5 and tighten it;

[0063] (4) Insert the prism bracket 2 into the upper limit nut 4, with the chuck 21 located below the ring cover 41;

[0064] (5) Screw the assembled upper limit nut 4 and prism bracket 2 into the thread of the connecting ring 53 of the three-claw nut 5, adjust the angle and tighten;

[0065] (6) Loosen the positioning nut 9 on the side of the prism seat, adjust the angle of the prism seat 1, and tighten it.

[0066] The device of the utility model can meet the installation requirements after field tests. It combines the non-destructive installation components with the prism, and there is no need to assemble the prism separately. At the same time, it avoids the damage to the appearance and concrete structure of the tunnel segments by the existing installation method, and circumvents the safety hazards of the traditional installation method to the segment materials. It is easy to install and has a low learning cost. It can effectively shorten the monitoring construction period and is reusable. Any parts can be replaced. It has obvious technical advantages in monitoring construction.

[0067] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A prism-integrated non-destructive installation device for shield tunnel measuring points, characterized by: The device comprises a three-claw base (5), a hoop (7), a prism bracket (2), a prism base (1) and a prism (3); The prism (3) is mounted on the prism seat (1), the prism seat (1) is mounted on the top end of the prism bracket (2), and the bottom end of the prism bracket (2) is fixed on the top of the three-claw female seat (5); The bottom of the three-claw female seat (5) is sheathed outside the existing bolt (10) and is fastened by the outer ring hoop (7).

2. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 1, characterized in that: The prism bracket (2) is a curved bracket, the bottom of the prism bracket (2) is arranged vertically, and the top of the prism bracket (2) is arranged horizontally.

3. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 2, characterized in that: A connecting shaft (22) is provided on the top of the prism bracket (2), and a connecting hole is provided on the side of the prism seat (1). The prism seat (1) is mounted on the connecting shaft (22) from the side through the connecting hole and is fastened by a prism seat side fixing nut (9) on the periphery.

4. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 3, characterized in that: A reversing gear (23) is provided on the connecting shaft (22).

5. The prism-integrated shield tunnel measuring point non-destructive installation device according to claim 4, characterized in that: A chuck (21) is provided at the bottom of the prism bracket (2), and the chuck (21) is located on the top of the three-claw female seat (5) and is fastened by an upper limit nut (4) on the periphery; The top of the upper limit nut (4) is provided with a ring cover (41), and the ring cover (41) covers the top of the chuck (21).

6. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 5, characterized in that: The bottom of the three-claw base (5) has three inward-retracted L-shaped claws (51), and the three L-shaped claws (51) are closely attached to the outside of the existing bolt (10) and are fastened by the outer ring hoop (7).

7. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 6, characterized in that: The top of the three-claw female seat (5) is a connecting ring (53) with external threads, and the middle is a pressure ring (52); The upper limit nut (4) is installed on the upper part of the connecting ring (53), and a lower limit nut (6) is provided on the lower part of the connecting ring (53) and outside the pressure ring (52).

8. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 7, characterized in that: An internal threaded hole (55) capable of screwing the existing bolt (10) is provided on the central axis of the connecting ring (53).

9. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 8, characterized in that: The bottom of the chuck (21) is provided with a downwardly protruding snap ring (24), and correspondingly, the top of the connecting ring (53) is provided with a downwardly recessed ring groove, and the snap ring (24) is embedded in the ring groove.

10. The prism-integrated non-destructive installation device for shield tunnel measuring points according to claim 9, characterized in that: The top outer edge of the hoop (7) is provided with an upwardly protruding ring platform (71), and correspondingly, the bottom outer side of the lower limit nut (6) is provided with an outwardly protruding clamping platform (61); The lower limit nut (6) is located above the hoop (7), the bottom of the lower limit nut (6) is located inside the ring platform (71), and the clamping platform (61) is located on the top of the ring platform (71).

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