A safety deformation monitoring device for cofferdam foundation pit assisted support

Abstract

The application discloses a kind of cofferdam foundation pit safety deformation monitoring devices of auxiliary support, belong to foundation pit engineering technical field, including inclinometer tube, detection mechanism, straightening component and auxiliary support framework;Inclinometer tube outside is equipped with for strengthening inclinometer tube and the integrity of external cast concrete auxiliary support framework, detection mechanism is installed on inclinometer tube;Inclinometer tube is installed on the straightening component for guaranteeing inclinometer tube overall alignment in installation stage;Detection mechanism includes detection rope, guide component, inclination detection module and torsion detection module, guide component is installed on inclinometer tube, the inner end of detection rope is equipped with two groups of inclination detection module, two groups of inclination detection module vertical distribution, inclination detection module is equipped with torsion detection module for detecting the torsion degree of inclinometer tube. By the above manner, the integrity of cast-in-place concrete in borehole and upper pipe, combined pipe and lower pipe is guaranteed, and comprehensive monitoring of cofferdam multidimensional deformation is realized.

Description

Technical Field

[0001] This invention relates to the field of foundation pit engineering technology, and specifically to a safety deformation monitoring device for cofferdam foundation pits with auxiliary support. Background Technology

[0002] During the construction of foundation pit projects, it is necessary to take reinforcement measures for the foundation pit and monitor the horizontal displacement of the retaining wall and the settlement of the foundation pit through monitoring equipment, so as to detect the signs of instability of the foundation pit in time, so as to take reinforcement measures in advance and effectively prevent the foundation pit from collapsing.

[0003] For example, Chinese patent CN222166090U discloses a steel cofferdam deformation monitoring device, which welds a fixed plate to one side of the inner wall of the steel cofferdam and connects one end of a first steel wire rope to the other side of the inner wall of the steel cofferdam through a connecting mechanism; then the degree of deformation of the inner wall of the steel cofferdam is determined based on the value of the tension detector.

[0004] However, the cofferdam foundation pit has multiple dimensions of deformation, such as tilting and torsion, making it difficult for the device to perform comprehensive monitoring in multiple dimensions. At the same time, in order to ensure the accuracy of the detection, it is necessary to ensure the accurate combination and connection of the inclinometer tubes, as well as the integrity of the inclinometer tubes and the pouring.

[0005] Based on this, the present invention designs an auxiliary support cofferdam foundation pit safety deformation monitoring device to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a safety deformation monitoring device for cofferdam foundation pit with auxiliary support.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A safety deformation monitoring device for a cofferdam foundation pit with auxiliary support includes an inclinometer tube, a detection mechanism, a straightening component, and an auxiliary support frame;

[0009] An auxiliary support frame is installed on the outside of the inclinometer tube to enhance the integrity of the inclinometer tube and the external poured concrete. A detection mechanism is installed on the inclinometer tube. A straightening component is installed on the inclinometer tube to ensure the overall alignment of the inclinometer tube during the installation phase.

[0010] The detection mechanism includes a detection rope, a guide assembly, an inclination detection module, and a torsion detection module. The guide assembly is installed on the inclinometer tube. The inner end of the detection rope passes through the guide assembly into the inclinometer tube. Two sets of inclination detection modules for detecting the inclination degree of the inclinometer tube are installed on the inner end of the detection rope. The two sets of inclination detection modules are vertically distributed. A torsion detection module for detecting the torsion degree of the inclinometer tube is installed on the inclination detection module. A fixing block is fixedly installed on the outer end of the detection rope. The fixing block is connected to the top of the inclinometer tube by bolts.

[0011] Furthermore, the inclinometer tube includes an upper tube, a combined tube, a lower tube, and a combined assembly. The upper tube, the combined tube, and the lower tube are symmetrically provided with two sets of mutually perpendicular guide grooves. The bottom of the upper tube and the top of the combined tube are connected by the combined assembly, adjacent combined tubes are connected by the combined assembly, and the bottom of the combined tube and the top of the lower tube are connected by the combined assembly. A lower end cap is threadedly installed at the bottom of the lower tube, and an upper end cap is snapped onto the top of the upper tube. The fixing block is detachably connected to the upper end cap by bolts.

[0012] Furthermore, the combined assembly includes a connector tube, a limiting platform, and limiting blocks. Limiting platforms are fixedly installed at the bottom of the upper tube, both ends of the combined tube, and the top of the lower tube. Limiting blocks are fixedly installed at equal intervals in a circumferential array at the bottom of the upper tube, both ends of the combined tube, and the top of the lower tube. A limiting groove is formed inside the connector tube, and the limiting blocks are slidably connected to the limiting groove. Multiple mounting holes are symmetrically formed on the connector tube. The connector tube is detachably connected to the upper tube, combined tube, and lower tube through the mounting holes and screws.

[0013] Furthermore, the guiding assembly includes a mounting frame and guide rollers. The mounting frame is fixedly mounted on the upper end cover, and guide rollers for guiding the detection rope are symmetrically rotatably mounted on the mounting frame.

[0014] Furthermore, the tilt detection module includes a detection rod, a central rotating arm, a rotating shaft, and a first contact wheel. The detection rod is fixedly connected to the inner end of the detection rope, and a through clearance groove is provided in the middle of the detection rod. The rotating shaft is fixedly installed in the clearance groove, and the middle part of the central rotating arm is hinged to the rotating shaft. A torsion spring is sleeved on the rotating shaft, and the two elastic legs of the torsion spring abut against the central rotating arm and the rotating shaft, respectively. The first contact wheel is rotatably installed at both ends of the central rotating arm. An inclination sensor for monitoring the tilt of the detection rod is fixedly installed in the clearance groove. The first contact wheel is rolledly connected to the guide groove.

[0015] Furthermore, the torsion detection module includes a rotating platform, a rotating frame, a second contact wheel, a detection block, and a torsion sensor. The rotating platform is rotatably mounted in the clearance groove. One end of the rotating frame is hinged to the rotating platform. A torsion spring is sleeved on the hinge shaft of the rotating frame and the rotating platform, and the two elastic legs of the torsion spring abut against the rotating platform and the rotating frame, respectively. The other end of the rotating frame is rotatably mounted with the second contact wheel, which is rolledly connected to the guide groove. A detection block is fixedly mounted on the rotating platform, and a torsion sensor for monitoring the movement angle of the detection block is fixedly mounted in the clearance groove.

[0016] Furthermore, the straightening assembly includes a traction rope, a mounting rod, a pneumatic internal support expansion clamp one, a pneumatic internal support expansion clamp two, and an arc-shaped plate. The traction rope passes through the middle of the guide roller and the upper end cover. The inner end of the traction rope is fixedly installed with the mounting rod. The pneumatic internal support expansion clamp one and the pneumatic internal support expansion clamp two are fixedly installed on the mounting rod. The output ends of the pneumatic internal support expansion clamp one and the pneumatic internal support expansion clamp two are fixedly installed with an arc-shaped plate. The radius of the outer wall of the arc-shaped plate is the same as the radius of the inner wall of the upper pipe, the combined pipe, and the lower pipe.

[0017] Furthermore, the auxiliary support frame includes mounting rings, support rods, rotating rods, and connecting sleeves. Multiple mounting rings are uniformly fixedly installed at equal intervals on the outer walls of the upper pipe, combined pipe, and lower pipe. Multiple rotating rods are evenly distributed in a circular array on the outside of the mounting rings at equal intervals. The upper end of the rotating rod is rotatably connected to the mounting ring. The other end of the rotating rod located on the same plane on the same upper pipe, combined pipe, and lower pipe is rotatably installed on the same support rod. The two ends of the connecting sleeve are respectively inserted into the support rod, and the connecting sleeve and the support rod are fixedly connected by screws.

[0018] Compared with the prior art, the advantages of this invention are as follows: the straightening component passes through the top of the upper pipe and enters the upper pipe, combined pipe, and lower pipe; the lower pipe at the bottom is fixed by the straightening component, and then the combined pipe and the lower pipe are aligned; at this time, the guide groove is pulled externally to open the guide groove, and then concrete is poured into the borehole. During this process, the auxiliary support frame acts as the framework of the concrete to provide auxiliary support for the upper pipe, combined pipe, and lower pipe, ensuring the integrity of the concrete poured into the borehole with the upper pipe, combined pipe, and lower pipe; after the poured concrete reaches the upper side of the connection position between the lower pipe and the bottommost combined pipe, the straightening component is restored and moved upward to the upper combined pipe. Between these steps, the upper and lower combined pipes are aligned using a straightening component, and then concrete is poured externally. This process continues until the pouring inside the borehole is complete, ensuring the vertical alignment of the lower pipe, multiple combined pipes, and the upper pipe. During construction, the concrete poured inside the borehole tilts and deforms synchronously with the cofferdam foundation, causing the auxiliary support frame and the upper, combined, and lower pipes to tilt and deform synchronously. The tilt detection module and torsion detection module inside the upper, combined, and lower pipes tilt and deform with them. The tilt detection module detects the overall tilt, and the torsion detection module detects the degree of torsion, thus enabling comprehensive monitoring of the multi-dimensional deformation of the cofferdam. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a perspective view of a safety deformation monitoring device for a cofferdam foundation pit with auxiliary support according to the present invention;

[0021] Figure 2 This is a front view of a safety deformation monitoring device for a cofferdam foundation pit with auxiliary support according to the present invention;

[0022] Figure 3 This is a right view of a safety deformation monitoring device for a cofferdam foundation pit with auxiliary support according to the present invention;

[0023] Figure 4 This is a schematic diagram of the upper pipe and its connection structure;

[0024] Figure 5 For along Figure 3 The solid after removing part of the structure in the AA direction Figure 1 ;

[0025] Figure 6 For along Figure 3 The solid after removing part of the structure in the AA direction Figure 2 ;

[0026] Figure 7 A schematic diagram of the bonding wheel and its connecting structure;

[0027] Figure 8 This is a schematic diagram of the curved plate and its connecting structure.

[0028] Figure 9 for Figure 1 Enlarged view of point B in the middle.

[0029] The labels in the diagram represent:

[0030] 1. Inclinometer tube; 11. Upper tube; 111. Upper end cap; 12. Combined tube; 13. Lower tube; 131. Lower end cap; 14. Guide groove; 15. Combined assembly; 151. Connector tube; 152. Limiting platform; 153. Limiting block; 154. Limiting groove; 155. Mounting hole; 2. Detection mechanism; 21. Detection rope; 211. Fixing block; 22. Guide assembly; 221. Mounting frame; 222. Guide roller; 23. Inclination detection module; 231. Detection rod; 232. Clearance groove; 233. Middle 234. Rotating arm; 235. Adhesion wheel one; 236. Stop block; 24. Torsion detection module; 241. Rotating table; 242. Rotating frame; 243. Adhesion wheel two; 244. Detection block; 245. Torsion sensor; 3. Straightening assembly; 31. Traction rope; 32. Mounting rod; 33. Pneumatic internal support expansion clamp one; 34. Pneumatic internal support expansion clamp two; 35. Arc plate; 4. Auxiliary support frame; 41. Mounting ring; 42. Support rod; 43. Rotating rod; 44. Connecting sleeve rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0033] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-5 A safety deformation monitoring device for a cofferdam foundation pit with auxiliary support includes an inclinometer tube 1, a detection mechanism 2, a straightening component 3, and an auxiliary support frame 4.

[0034] An auxiliary support frame 4 is installed on the outside of the inclinometer tube 1 to strengthen the integrity of the inclinometer tube 1 and the external poured concrete. A detection mechanism 2 is installed on the inclinometer tube 1. A straightening component 3 is installed on the inclinometer tube 1 to ensure the overall alignment of the inclinometer tube 1 during the installation stage.

[0035] like Figure 3 and Figure 5As shown, the detection mechanism 2 includes a detection rope 21, a guide assembly 22, an inclination detection module 23, and a torsion detection module 24. The guide assembly 22 is installed on the inclinometer tube 1. The inner end of the detection rope 21 passes through the guide assembly 22 into the inclinometer tube 1. Two sets of inclination detection modules 23 for detecting the inclination degree of the inclinometer tube 1 are installed on the inner end of the detection rope 21. The two sets of inclination detection modules 23 are vertically distributed. A torsion detection module 24 for detecting the torsion degree of the inclinometer tube 1 is installed on the inclination detection module 23. A fixing block 211 is fixedly installed on the outer end of the detection rope 21. The fixing block 211 is connected to the top of the inclinometer tube 1 by bolts.

[0036] like Figures 2-4 As shown, the inclinometer tube 1 includes an upper tube 11, a combined tube 12, a lower tube 13, and a combined assembly 15. Two sets of mutually perpendicular guide grooves 14 are symmetrically opened inside the upper tube 11, the combined tube 12, and the lower tube 13. The bottom of the upper tube 11 and the top of the combined tube 12 are connected by the combined assembly 15. Adjacent combined tubes 12 are connected by the combined assembly 15. The bottom of the combined tube 12 and the top of the lower tube 13 are connected by the combined assembly 15. A lower end cap 131 is threadedly installed at the bottom of the lower tube 13, and an upper end cap 111 is snapped onto the top of the upper tube 11. The fixing block 211 is detachably connected to the upper end cap 111 by bolts.

[0037] In this embodiment, when the auxiliary support cofferdam foundation pit safety deformation monitoring device is working normally, a hole is drilled at the monitoring location of the cofferdam using a drilling device. Then, the lower end cap 131 is installed at the bottom of the lower pipe 13. After the lower pipe 13 and multiple combined pipes 12 are connected sequentially through the assembly 15, the lower pipe 13 and combined pipes 12 are sunk into the borehole until the overall length of the lower pipe 13 and combined pipes 12 is slightly less than the borehole depth. At this time, the upper pipe 11 is connected to the topmost combined pipe 12 through the assembly 15. During this process, the auxiliary support outside the upper pipe 11, combined pipes 12 and lower pipe 13 is connected. The auxiliary support frame 4 is connected; the upper end cap 111 is installed on top of the upper pipe 11; the straightening component 3 passes through the top of the upper pipe 11 and enters the upper pipe 11, the combined pipe 12, and the lower pipe 13; the lower pipe 13 at the bottom is fixed by the straightening component 3, and then the combined pipe 12 and the lower pipe 13 are aligned; at this time, the guide groove 14 is pulled externally to unfold the guide groove 14, and then concrete is poured into the borehole. During this process, the auxiliary support frame 4 acts as a framework for the concrete to provide auxiliary support for the upper pipe 11, the combined pipe 12, and the lower pipe 13, ensuring that the concrete poured into the borehole is in close contact with the upper pipe 11. 1. Integrity of the combined pipe 12 and the lower pipe 13; after the poured concrete reaches the upper side of the connection position between the lower pipe 13 and the bottom combined pipe 12, the straightening component 3 is restored and moved upward between the upper combined pipes 12. The upper combined pipe 12 is aligned with the lower combined pipe 12 through the straightening component 3, and then the external concrete is poured; this operation is continued until the pouring inside the borehole is completed; thus ensuring the vertical alignment of the lower pipe 13, multiple combined pipes 12, and the upper pipe 11; then the straightening component 3 is removed; the tilt detection module 23 and the torsion detection module 2 4 is located inside the upper pipe 11, combined pipe 12, and lower pipe 13. During the construction phase, the concrete poured in the borehole tilts and deforms synchronously with the cofferdam foundation, thereby causing the auxiliary support frame 4 and the upper pipe 11, combined pipe 12, and lower pipe 13 to tilt and deform synchronously. The tilt detection module 23 and the torsion detection module 24 inside the upper pipe 11, combined pipe 12, and lower pipe 13 tilt and deform with the upper pipe 11, combined pipe 12, and lower pipe 13. The tilt detection module 23 detects the overall tilt, and the torsion detection module 24 detects the degree of torsion. This enables comprehensive monitoring of the multi-dimensional deformation of the cofferdam.

[0038] Example 2: In some embodiments, as a preferred embodiment of the present invention, such as... Figure 4As shown, the combined assembly 15 includes a connector tube 151, a limiting platform 152, and a limiting block 153. The limiting platform 152 is fixedly installed at the bottom of the upper tube 11, both ends of the combined tube 12, and the top of the lower tube 13. The limiting blocks 153 are fixedly installed in a circumferential array at equal intervals at the bottom of the upper tube 11, both ends of the combined tube 12, and the top of the lower tube 13. A limiting groove 154 is opened in the connector tube 151, and the limiting block 153 is slidably connected to the limiting groove 154 for limiting. A plurality of mounting holes 155 are symmetrically opened on the connector tube 151. The connector tube 151 is detachably connected to the upper tube 11, the combined tube 12, and the lower tube 13 through the mounting holes 155 and screws.

[0039] like Figure 4 and Figure 7 As shown, the guide assembly 22 includes a mounting frame 221 and a guide roller 222. The mounting frame 221 is fixedly mounted on the upper end cover 111, and the guide roller 222 for guiding the detection rope 21 is symmetrically rotatably mounted on the mounting frame 221.

[0040] The tilt detection module 23 includes a detection rod 231, a central rotating arm 233, a rotating shaft 234, and a first contact wheel 235. The detection rod 231 is fixedly connected to the inner end of the detection rope 21, and a through clearance groove 232 is provided in the middle of the detection rod 231. The rotating shaft 234 is fixedly installed in the clearance groove 232. The middle part of the central rotating arm 233 is hinged to the rotating shaft 234. A torsion spring is sleeved on the rotating shaft 234, and the two elastic legs of the torsion spring abut against the central rotating arm 233 and the rotating shaft 234, respectively. The first contact wheel 235 is rotatably installed at both ends of the central rotating arm 233. A tilt sensor for monitoring the tilt of the detection rod 231 is fixedly installed in the clearance groove 232. The first contact wheel 235 is rolledly connected to the guide groove 14.

[0041] The tilt detection module 23 also includes a stop 236, and the stop 236 is fixedly installed in the clearance groove 232. The stop 236 abuts against the central rotating arm 233.

[0042] The torsion detection module 24 includes a rotating platform 241, a rotating frame 242, a second contact wheel 243, a detection block 244, and a torsion sensor 245. The rotating platform 241 is rotatably mounted in the clearance groove 232. One end of the rotating frame 242 is hinged to the rotating platform 241. A torsion spring is sleeved on the hinge shaft of the rotating frame 242 and the rotating platform 241. The two elastic legs of the torsion spring abut against the rotating platform 241 and the rotating frame 242, respectively. The other end of the rotating frame 242 is rotatably mounted with the second contact wheel 243, which is rolledly connected to the guide groove 14. The detection block 244 is fixedly mounted on the rotating platform 241, and a torsion sensor 245 for monitoring the movement angle of the detection block 244 is fixedly mounted in the clearance groove 232.

[0043] like Figure 8As shown, the straightening assembly 3 includes a traction rope 31, a mounting rod 32, a pneumatic internal support expansion clamp 33, a pneumatic internal support expansion clamp 34, and an arc plate 35. The traction rope 31 passes through the middle of the guide roller 222 and the upper end cover 111. The mounting rod 32 is fixedly installed at the inner end of the traction rope 31. The pneumatic internal support expansion clamp 33 is fixedly installed on the mounting rod 32. The pneumatic internal support expansion clamp 34 is fixedly installed on the mounting rod 32. The arc plate 35 is fixedly installed at the output end of the pneumatic internal support expansion clamp 33 and the pneumatic internal support expansion clamp 34. The radius of the outer wall of the arc plate 35 is the same as the radius of the inner wall of the upper pipe 11, the combined pipe 12, and the lower pipe 13.

[0044] like Figure 9 As shown, the auxiliary support frame 4 includes mounting rings 41, support rods 42, rotating rods 43, and connecting sleeves 44. Multiple mounting rings 41 are evenly and uniformly fixedly installed on the outer walls of the upper pipe 11, combined pipe 12, and lower pipe 13 at equal intervals. Multiple rotating rods 43 are evenly distributed in a circular array on the outside of the mounting rings 41 at equal intervals. The upper end of the rotating rod 43 is rotatably connected to the mounting ring 41. The other end of the rotating rod 43 located on the same plane on the same upper pipe 11, combined pipe 12, and lower pipe 13 is rotatably installed on the same support rod 42. The two ends of the connecting sleeve 44 are respectively inserted into the support rod 42, and the connecting sleeve 44 and the support rod 42 are fixedly connected by screws.

[0045] In this embodiment, the connector tube 151 is inserted into the adjacent upper tube 11, combined tube 12, and lower tube 13 under the limiting action of the limiting block 153 and the limiting groove 154, so that the mounting hole 155 on the connector tube 151 is aligned with the fastening position. The upper tube 11, combined tube 12, or lower tube 13 at both ends of the connector tube 151 is fixed by screws, thereby connecting the upper tube 11, combined tube 12, and lower tube 13 together. During the process of lowering the upper tube 11, combined tube 12, and lower tube 13 into the drill hole, the support rod 42 hangs down naturally. At this time, the mounting ring... The multiple rotating rods 43 on the periphery retract, facilitating smooth movement into the borehole; the traction rope 31 drives the installation rod 32 to move within the upper pipe 11, the combined pipe 12, and the lower pipe 13, moving the installation rod 32 between the lower pipe 13 and the combined pipe 12. The pneumatic internal support expansion clamp 34 is activated, driving the arc-shaped plate 35 to externally support and fix the lower pipe 13. Then, the pneumatic internal support expansion clamp 33 is activated, using the arc-shaped plate 35 to fix the combined pipe 12, thus aligning the lower pipe 13 and the combined pipe 12; the support rod 42 is pulled upwards from the outside. The connecting sleeve 44 drives the rotating rod 43 to rotate, causing the multiple support rods 42 around the mounting ring 41 to unfold and form a skeleton; concrete is poured into the borehole, and the support rods 42, rotating rod 43, connecting sleeve 44, and mounting ring 41 strengthen the integrity of the concrete with the upper pipe 11, combined pipe 12, and lower pipe 13; after the concrete is poured to the upper side of the connection between the lower pipe 13 and combined pipe 12, the pneumatic internal support expansion clamp 1 33 and pneumatic internal support expansion clamp 2 34 are reset, and the traction rope 31 drives the mounting rod 32, pneumatic internal support expansion clamp 1 33, and pneumatic internal support expansion clamp 2 34 to return to their original positions. The pneumatic internal support expansion clamp 2 34 moves up to the connection point of the adjacent upper combined pipe 12. When the pneumatic internal support expansion clamp 1 33, the pneumatic internal support expansion clamp 2 34 and the arc plate 35 pass through, the upper combined pipe 12 is aligned with the lower side, and then the concrete is poured. After the pouring is completed, the installation rod 32, the pneumatic internal support expansion clamp 1 33, the pneumatic internal support expansion clamp 2 34 and the arc plate 35 are removed by the traction rope 31. The upper end cover 111 is installed on the upper pipe 11, so that the detection rod 231 moves into the upper pipe 11, the combined pipe 12 and the lower pipe 13.

[0046] The central rotating arm 233 twists to bring the first contact wheel 235 into contact with the guide groove 14. The first contact wheel 235 rolls within the guide groove 14, causing the detection rod 231 to move downwards along the guide groove 14 under gravity. Two sets of vertically distributed rotating shafts 234 move the two sets of detection rods 231 within the upper tube 11, combined tube 12, and lower tube 13 respectively, maintaining verticality during movement to facilitate the detection of inclination in two different dimensions. The inclination sensor within the clearance groove 232 measures the inclination of the detection rod 231. The tilt of pipe 11, combined pipe 12 and lower pipe 13 is detected to monitor the tilt of the concrete structure and the external cofferdam. At the same time, the second contact wheel 243 rolls in contact with the guide groove 14. If the upper pipe 11, combined pipe 12 and lower pipe 13 twist, the guide groove 14 twists and drives the second contact wheel 243, the rotating frame 242 and the rotating table 241 to rotate. The rotation angle of the detection block 244 on the rotating table 241 is detected by the torsion sensor 245, thereby realizing the monitoring of the torsion.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A safety deformation monitoring device for a cofferdam foundation pit with auxiliary support, comprising an inclinometer (1), a detection mechanism (2), a straightening assembly (3), and an auxiliary support frame (4), characterized in that: An auxiliary support frame (4) is installed on the outside of the inclinometer tube (1) to strengthen the integrity of the inclinometer tube (1) and the external poured concrete. A detection mechanism (2) is installed on the inclinometer tube (1). A straightening component (3) is installed on the inclinometer tube (1) to ensure the overall alignment of the inclinometer tube (1) during the installation stage. The detection mechanism (2) includes a detection rope (21), a guide assembly (22), an inclination detection module (23), and a torsion detection module (24). The guide assembly (22) is installed on the inclinometer tube (1). The inner end of the detection rope (21) is inserted into the inclinometer tube (1) through the guide assembly (22). The inner end of the detection rope (21) is equipped with two sets of inclination detection modules (23) for detecting the inclination degree of the inclinometer tube (1). The two sets of inclination detection modules (23) are vertically distributed. The inclination detection module (23) is equipped with a torsion detection module (24) for detecting the torsion degree of the inclinometer tube (1). The outer end of the detection rope (21) is fixedly installed with a fixing block (211). The fixing block (211) is connected to the top of the inclinometer tube (1) by bolts.

2. The auxiliary support cofferdam foundation pit safety deformation monitoring device according to claim 1, characterized in that, The inclinometer tube (1) includes an upper tube (11), a combined tube (12), a lower tube (13), and a combined assembly (15). Two sets of mutually perpendicular guide grooves (14) are symmetrically opened inside the upper tube (11), the combined tube (12), and the lower tube (13). The bottom of the upper tube (11) and the top of the combined tube (12) are connected by the combined assembly (15). Adjacent combined tubes (12) are connected by the combined assembly (15). The bottom of the combined tube (12) and the top of the lower tube (13) are connected by the combined assembly (15). The bottom of the lower tube (13) is threaded with a lower end cap (131), and the top of the upper tube (11) is snapped with an upper end cap (111). The fixing block (211) is detachably connected to the upper end cap (111) by bolts.

3. The auxiliary support cofferdam foundation pit safety deformation monitoring device according to claim 2, characterized in that, The combined assembly (15) includes a connector tube (151), a limiting platform (152), and a limiting block (153). The limiting platform (152) is fixedly installed at the bottom of the upper tube (11), both ends of the combined tube (12), and the top of the lower tube (13). The limiting blocks (153) are fixedly installed at equal intervals in a circular array at the bottom of the upper tube (11), both ends of the combined tube (12), and the top of the lower tube (13). A limiting groove (154) is opened in the connector tube (151). The limiting block (153) and the limiting groove (154) are connected in a limiting sliding connection. Multiple mounting holes (155) are symmetrically opened on the connector tube (151). The connector tube (151) is detachably connected to the upper tube (11), the combined tube (12), and the lower tube (13) through the mounting holes (155) and screws.

4. The auxiliary support cofferdam foundation pit safety deformation monitoring device according to claim 3, characterized in that, The guide assembly (22) includes a mounting frame (221) and a guide roller (222). The mounting frame (221) is fixedly mounted on the upper end cover (111), and the guide roller (222) for guiding the detection rope (21) is symmetrically rotated on the mounting frame (221).

5. The auxiliary support cofferdam foundation pit safety deformation monitoring device according to claim 4, characterized in that, The tilt detection module (23) includes a detection rod (231), a central rotating arm (233), a rotating shaft (234), and a first contact wheel (235). The detection rod (231) is fixedly connected to the inner end of the detection rope (21), and a through clearance groove (232) is provided in the middle of the detection rod (231). The rotating shaft (234) is fixedly installed in the clearance groove (232), and the middle part of the central rotating arm (233) is hinged to the rotating shaft (234). A torsion spring is sleeved on the rotating shaft (234), and the two elastic legs of the torsion spring abut against the central rotating arm (233) and the rotating shaft (234) respectively. The first contact wheel (235) is rotatably installed at both ends of the central rotating arm (233). A tilt sensor for monitoring the tilt of the detection rod (231) is fixedly installed in the clearance groove (232). The first contact wheel (235) is rolledly connected to the guide groove (14).

6. The auxiliary support cofferdam foundation pit safety deformation monitoring device according to claim 5, characterized in that, The torsion detection module (24) includes a rotating platform (241), a rotating frame (242), a second contact wheel (243), a detection block (244), and a torsion sensor (245). The rotating platform (241) is rotatably installed in the clearance groove (232). One end of the rotating frame (242) is hinged to the rotating platform (241). A torsion spring is sleeved on the hinge shaft of the rotating frame (242) and the rotating platform (241). The two elastic legs of the torsion spring abut against the rotating platform (241) and the rotating frame (242) respectively. The other end of the rotating frame (242) is rotatably installed with the second contact wheel (243). The second contact wheel (243) is rolledly connected to the guide groove (14). The detection block (244) is fixedly installed on the rotating platform (241). A torsion sensor (245) for monitoring the movement angle of the detection block (244) is fixedly installed in the clearance groove (232).

7. The auxiliary support cofferdam foundation pit safety deformation monitoring device according to claim 6, characterized in that, The straightening assembly (3) includes a traction rope (31), an installation rod (32), a pneumatic internal support expansion clamp one (33), a pneumatic internal support expansion clamp two (34), and an arc plate (35). The traction rope (31) passes through the middle of the guide roller (222) and the upper end cover (111). The installation rod (32) is fixedly installed at the inner end of the traction rope (31). The pneumatic internal support expansion clamp one (33) is fixedly installed on the installation rod (32). The pneumatic internal support expansion clamp two (34) is fixedly installed on the installation rod (32). The arc plate (35) is fixedly installed at the output end of the pneumatic internal support expansion clamp one (33) and the pneumatic internal support expansion clamp two (34). The radius of the outer wall of the arc plate (35) is the same as the radius of the inner wall of the upper pipe (11), the combined pipe (12), and the lower pipe (13).

8. The auxiliary support cofferdam foundation pit safety deformation monitoring device according to claim 7, characterized in that, The auxiliary support frame (4) includes mounting rings (41), support rods (42), rotating rods (43), and connecting sleeves (44). Multiple mounting rings (41) are evenly fixedly installed on the outer walls of the upper tube (11), combined tube (12), and lower tube (13) at equal intervals. Multiple rotating rods (43) are evenly distributed in a circular array on the outside of the mounting rings (41). The upper end of the rotating rod (43) is rotatably connected to the mounting ring (41). The other end of the rotating rod (43) located on the same plane on the same upper tube (11), combined tube (12), and lower tube (13) is rotatably installed on the same support rod (42). The two ends of the connecting sleeve (44) are respectively inserted into the support rod (42). The connecting sleeve (44) and the support rod (42) are fixedly connected by screws.

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