Displacement monitoring device for deep foundation pit supporting structure

Abstract

The utility model discloses a displacement monitoring device for a deep foundation pit supporting structure, which belongs to the technical field of monitoring devices and comprises a control module, and four groups of grading alarm components for grading alarm are mounted on the control module and are respectively positioned on four side walls of the control module. And the four groups of grading alarm assemblies are respectively provided with a quick assembly assembly for quick disassembly and assembly. By means of the mode, when the supporting structure displaces, the contacts on the power input end and the power output end are gradually connected through movement of the grading assembly, the control module controls alarm information of the corresponding grade to be sent to the alarm device according to the connection condition of the contacts on the power output end, and grading alarm is achieved. And the rope can be quickly assembled and disassembled through the quick assembly assembly, so that the rope can be conveniently disassembled and repaired, and meanwhile, the rope can be quickly disassembled when avoiding is needed in engineering construction.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring devices, and particularly relates to a displacement monitoring device for a deep foundation pit support structure. Background Technique

[0002] At present, with the rapid development of urban construction, various projects such as high-rise buildings, underground rail transit, and large underground complexes are emerging continuously. As the basic part of these projects, deep foundation pit projects are of great importance. Deep foundation pit projects are extremely vulnerable to various factors, such as the complexity of soil properties, the pressure of adjacent buildings, the dynamic change of groundwater level, the vibration interference of surrounding traffic, as well as the rationality of design schemes and the standardization of construction procedures. Any abnormality in these factors may trigger unpredictable safety accidents, such as foundation pit collapse, surrounding ground settlement, building inclination, etc. These accidents will not only cause project delays and heavy economic losses, but also pose a serious threat to the safety of personnel's lives.

[0003] Traditional foundation pit monitoring methods mainly rely on manual measurement and regular inspections. Manual measurement usually uses conventional measuring instruments such as total stations and levels, and professional personnel conduct on-site measurements at certain time intervals. This method has many limitations. First of all, manual measurement is limited by human vision and operation accuracy, and it is easy to produce reading errors, resulting in the difficulty of ensuring the accuracy of monitoring data. Although significant progress has been made in monitoring technology at present, there are still some problems to be solved in the field of displacement monitoring of deep foundation pit support structures. The stability and reliability of automated monitoring equipment still need to be further improved. In a complex construction environment, the equipment is easily interfered with and data anomalies or failures occur. In existing displacement monitoring devices for deep foundation pit support structures, the monitoring devices usually adopt relatively complex or fixed methods. Special tools or cumbersome operation steps are required for installation and disassembly, which not only increases the time cost of construction and maintenance, but also when the project construction needs to avoid or the equipment fails and needs to be repaired, the rope cannot be quickly disassembled, affecting work efficiency.

[0004] Based on this, the utility model designs a displacement monitoring device for a deep foundation pit support structure to solve the above problems. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned disadvantages of the prior art and provide a displacement monitoring device for a deep foundation pit support structure.

[0006] The technical solution adopted to solve the above technical problem is:

[0007] A displacement monitoring device for a deep foundation pit support structure, including a control module, a grading alarm component for grading alarms is installed on the control module. Four groups of the grading alarm components are arranged on the four side walls of the control module respectively, and quick-installation components for quick disassembly and assembly are installed on the four groups of the grading alarm components respectively;

[0008] The grading alarm component includes a first installation component, a grading component, a power access terminal and a power output terminal. The first installation component is connected to the control module. The grading component is connected to the first installation component and the quick-installation component. The power access terminal and the power output terminal are connected to the first installation component.

[0009] Through the above technical solution, the control module is installed in the middle of the foundation pit through a fixing device. Then one end of the rope is fixed on the support structure and the other end is installed on the quick-installation component. Then the quick-installation component is installed on the grading component. By tightening the rope, the grading component is pulled out from the first installation component to form an initial state. At this time, the rope is completely fixed to the quick-installation component. When the support structure is displaced, the force of the rope decreases, so the first installation component gradually pulls the grading component back and gradually connects the contacts on the power access terminal and the power output terminal through the movement of the grading component. The control module controls the corresponding level of alarm information to be sent to the alarm device according to the connection situation of the contacts on the power output terminal, realizing grading alarm. And through the quick-installation component, the rope can be quickly disassembled and assembled, which is convenient for disassembly and repair, and can also be quickly disassembled when it is necessary to avoid during engineering construction.

[0010] Further, the input end at the lower end of the power access terminal is electrically connected to the output end on the control module, and the three output interfaces at the upper end of the power output terminal are electrically connected to the input end at the upper end of the control module.

[0011] Through the above technical solution, the power access terminal accesses power, and the power output terminal is gradually powered on through the coil on the grading component. When one group of power is connected to the control module through the three output ports on the power output terminal, it is a third-level alarm. When two groups of power are connected to the control module, it is a second-level alarm. When three groups of power are connected to the control module, it is a first-level alarm.

[0012] Further, the first installation component includes a first installation shell, a first spring, an installation block, a chute and a slide bar. The inner end surfaces of the four first installation shells are respectively fixedly connected to the four side walls of the control module. The inner ends of the four first springs are respectively fixedly connected to the four side walls of the control module. The outer ends of the first springs are connected to the grading component. Two groups of the installation blocks are symmetrically arranged front and back and are fixedly installed on the inner side walls of the first installation shell. A chute for sliding the slide bar is opened on the inner side surface of the installation block. Two groups of the slide bars are symmetrically arranged front and back, and the slide bars are connected to the grading component.

[0013] Through the above technical solution, the first spring gradually pulls the grading component inward through the displacement of the support structure, realizing grading alarm according to the displacement distance. The sliding bar slides in the chute to guide the grading component.

[0014] Further, the power access terminal is fixedly installed at the lower end of the outer side wall of the first installation shell, and there are three output contacts of the power access terminal extending into the inner end of the first installation shell. The output contacts on the power access terminal are connected to the grading component. The power output terminal is fixedly installed at the upper end of the outer side wall of the first installation shell, and there are three input contacts of the power output terminal extending into the inner end of the first installation shell. The input contacts on the power output terminal are connected to the grading component.

[0015] Further, the grading component includes a second installation shell and a conductive metal ring. The side wall of the second installation shell close to the control module is fixedly connected to the outer end of the first spring. The second installation shell is connected to the quick installation component. Three conductive metal rings are arranged at equal intervals and are respectively fixedly installed on the outer side wall of the second installation shell. The outer side wall of the conductive metal ring is in fit connection with the output contacts of the power access terminal, and the outer side wall of the conductive metal ring is in fit connection with the input contacts on the power output terminal. Both of the two sliding bars are fixedly installed at the rear end of the outer side wall of the second installation shell.

[0016] Through the above technical solution, three conductive metal rings are respectively connected to three contacts on the power access terminal and the power output terminal.

[0017] Further, the quick installation component includes a second installation component and a locking component. The second installation component is connected to the second installation shell, and the locking component is connected to the second installation component.

[0018] Further, the second installation component includes a third installation shell, an installation ring and a limiting ring. The side wall of the third installation shell close to the control module is in fit connection with the inner side wall of the inner end of the second installation shell close to the control module. The installation ring is fixedly installed on the side wall of the third installation shell away from the control module. The limiting ring is fixedly installed on the inner side wall of the second installation shell. The third installation shell, the limiting ring are connected to the locking component.

[0019] Through the above technical solution, the rope is installed through the installation ring.

[0020] Furthermore, the locking assembly includes a limit block, an avoidance groove, a second spring, an elastic connecting plate, a driving ring, a guide groove, a mounting circular plate and a third spring, the avoidance groove and the guide groove are symmetrically arranged in two groups, both of which are opened on the outer wall of the third mounting shell, and the avoidance groove is located on the inner side of the guide groove, the limit block and the elastic connecting plate are symmetrically arranged in two groups, the upper ends of the two groups of limit blocks pass through the avoidance groove respectively, the inner side of the limit block is an inclined surface that gradually rises from the inside to the outside, and the inner end side wall of the avoidance groove is an inclined surface that fits and slides with the inclined surface on the limit block, the outer side walls of the two groups of limit blocks extending out of the avoidance groove are both in contact with the inner side wall of the limit ring, the outer side walls of the two groups of limit blocks that do not extend out of the avoidance groove are respectively fixedly connected to the inner end faces of the two groups of elastic connecting plates, and the two ends of the second spring are respectively fixedly connected to the inner side walls of the two groups of limit blocks.

[0021] Furthermore, the outer side walls of the outer end of the elastic connecting plate are respectively fixedly connected to the connecting columns at the inner end of the driving ring, the connecting columns at the inner end of the driving ring slide in the guide groove, the outer end surface of the elastic connecting plate is fixedly connected to the inner end surface of the mounting circular plate, the outer end surface of the mounting circular plate is fixedly connected to the inner end of the third spring, and the outer end of the third spring is fixedly connected to the side wall of the inner end of the third mounting shell away from the control module.

[0022] Through the above technical scheme, the quick-release assembly is locked by the cooperation of the limit card block and the limit ring, and by toggling the driving ring, the driving ring drives the elastic connecting plate, and the elastic connecting plate drives the limit card block, and the inclined surface of the limit card block slides with the inner end inner wall of the avoidance groove to drive the limit card block to move toward the inner end of the third mounting shell, thereby releasing the interference limit between the limit card block and the limit ring to complete the unlocking. Similarly, when the limit card block is inserted to lock, the driving ring is released, and the mounting circular plate is pulled under the action of the third spring, and the mounting circular plate drives the elastic connecting plate, and the elastic connecting plate drives the driving ring to reset, and at the same time the elastic connecting plate drives the limit card block to move, and the limit card block is re-extended under the action of the second spring to limit with the limit ring to complete the locking.

[0023] The beneficial effects of the present utility model are as follows: (1) The control module is installed in the middle of the foundation pit through a fixing device. Then, one end of the rope is fixed on the support structure, and the other end is installed on the quick-installation component. Then, the quick-installation component is installed on the grading component. By tightening the rope, the grading component is pulled out from the first installation component to form an initial state. At this time, the rope is completely fixed to the quick-installation component. When the support structure is displaced, the force of the rope decreases, so the first installation component gradually pulls the grading component back, and through the movement of the grading component, the contacts on the power access terminal and the power output terminal are gradually connected. The control module controls the corresponding level of alarm information to be sent to the alarm device according to the connection status of the contacts on the power output terminal, realizing grading alarm; (2) Through the quick-installation component, the rope can be quickly disassembled and assembled, which is convenient for disassembly and repair. At the same time, it can be quickly disassembled when it is necessary to avoid during engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. is a perspective view of a displacement monitoring device for a deep foundation pit support structure of the present utility model;

[0025] Figure 2 FIG. is a front view of a displacement monitoring device for a deep foundation pit support structure of the present utility model;

[0026] Figure 3 is a sectional view along the Figure 2 A-A direction of

[0027] Figure 4 is a sectional view along the Figure 2 B-B direction of

[0028] Figure 5 FIG. is a partial sectional view of a displacement monitoring device for a deep foundation pit support structure of the present utility model;

[0029] Figure 6 is Figure 4 an enlarged view of part C in

[0030] REFERENCE MARKS:

[0031] 1. Control module; 2. Grading alarm component; 21. First installation component; 211. First installation shell; 212. First spring; 213. Installation block; 214. Chute; 215. Slide bar; 22. Grading component; 221. Second installation shell; 222. Conductive metal ring; 23. Power access terminal; 24. Power output terminal; 3. Quick-installation component; 31. Second installation component; 311. Third installation shell; 312. Installation ring; 313. Limiting ring; 32. Locking component; 321. Limiting block; 322. Avoidance groove; 323. Second spring; 324. Elastic connecting plate; 325. Driving ring; 326. Guide groove; 327. Installation circular plate; 328. Third spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0033] In the following description, the "left", "right", "front", "rear", "upper", and "lower" mentioned are oriented in the perspective direction of the front view.

[0034] Embodiment 1: In some embodiments, please refer to the Figures 1-6 of the specification drawings. A displacement monitoring device for a deep foundation pit support structure includes a control module 1. A grading alarm component 2 for grading alarms is installed on the control module 1. Four groups of grading alarm components 2 are provided and are respectively located on the four side walls of the control module 1. Quick installation components 3 for quick disassembly and assembly are respectively installed on the four groups of grading alarm components 2.

[0035] The grading alarm component 2 includes a first installation component 21, a grading component 22, a power access terminal 23, and a power output terminal 24. The first installation component 21 is connected to the control module 1. The grading component 22 is connected to the first installation component 21 and the quick installation component 3. The power access terminal 23 and the power output terminal 24 are connected to the first installation component 21. The input end at the lower end of the power access terminal 23 is electrically connected to the output end on the control module 1. The three output interfaces at the upper end of the power output terminal 24 are electrically connected to the input end on the upper end of the control module 1.

[0036] The first installation component 21 includes a first installation shell 211, a first spring 212, an installation block 213, a chute 214, and a sliding bar 215. The inner end surfaces of the four groups of first installation shells 211 are respectively fixedly connected to the four side walls of the control module 1. The inner ends of the four groups of first springs 212 are respectively fixedly connected to the four side walls of the control module 1. The outer end of the first spring 212 is connected to the grading component 22. Two groups of installation blocks 213 are symmetrically arranged front and rear and are fixedly installed on the inner side walls of the first installation shell 211. A chute 214 for sliding cooperation with the sliding bar 215 is provided on the inner side surface of the installation block 213. Two groups of sliding bars 215 are symmetrically arranged front and rear. The sliding bar 215 is connected to the grading component 22.

[0037] The power access terminal 23 is fixedly installed at the lower end of the outer side wall of the first installation shell 211, and three output end contacts of the power access terminal 23 extend into the inner end of the first installation shell 211. The output end contacts on the power access terminal 23 are connected to the grading component 22. The power output terminal 24 is fixedly installed at the upper end of the outer side wall of the first installation shell 211, and three input end contacts of the power output terminal 24 extend into the inner end of the first installation shell 211. The input end contacts on the power output terminal 24 are connected to the grading component 22.

[0038] The grading component 22 includes a second mounting shell 221 and a conductive metal ring 222. The side wall of the second mounting shell 221 close to the control module 1 is fixedly connected to the outer end of the first spring 212. The second mounting shell 221 is connected to the quick mounting component 3. Three groups of conductive metal rings 222 are arranged at equal intervals and are respectively fixedly installed on the outer side wall of the second mounting shell 221. The outer side wall of the conductive metal ring 222 is in contact connection with the output terminal contact of the power access end 23, and the outer side wall of the conductive metal ring 222 is in contact connection with the input terminal contact on the power output end 24. Both groups of sliding strips 215 are fixedly installed at the rear end of the outer side wall of the second mounting shell 221.

[0039] The quick mounting component 3 includes a second mounting component 31 and a locking component 32. The second mounting component 31 is connected to the second mounting shell 221, and the locking component 32 is connected to the second mounting component 31.

[0040] The second mounting component 31 includes a third mounting shell 311, a mounting ring 312, and a limiting ring 313. The side wall of the third mounting shell 311 close to the control module 1 is in contact connection with the inner side wall of the inner end of the second mounting shell 221 close to the control module 1. The mounting ring 312 is fixedly installed on the side wall of the third mounting shell 311 away from the control module 1. The limiting ring 313 is fixedly installed on the inner side wall of the second mounting shell 221. The third mounting shell 311, the limiting ring 313 are connected to the locking component 32.

[0041] The locking component 32 includes a limiting block 321, an avoidance groove 322, a second spring 323, an elastic connecting plate 324, a driving dial ring 325, a guiding groove 326, a mounting circular plate 327, and a third spring 328. Two groups of avoidance grooves 322 and guiding grooves 326 are symmetrically arranged and are both opened on the outer side wall of the third mounting shell 311, and the avoidance groove 322 is located inside the guiding groove 326. Two groups of limiting blocks 321 and elastic connecting plates 324 are symmetrically arranged. The upper ends of the two groups of limiting blocks 321 respectively pass through the avoidance groove 322. The inner side of the limiting block 321 is an inclined surface that gradually rises from the inside to the outside. The inner end side wall of the avoidance groove 322 is an inclined surface that fits and slides with the inclined surface on the limiting block 321. The outer side walls of the two groups of limiting blocks 321 extending out of the avoidance groove 322 are both in contact connection with the inner side wall of the limiting ring 313. The outer side walls of the two groups of limiting blocks 321 that do not extend out of the avoidance groove 322 are respectively fixedly connected to the inner end surfaces of the two groups of elastic connecting plates 324. The two ends of the second spring 323 are respectively fixedly connected to the inner side walls of the two groups of limiting blocks 321.

[0042] The outer side walls of the outer end of the elastic connecting plate 324 are respectively fixedly connected to the connecting columns at the inner end of the driving ring 325, the connecting columns at the inner end of the driving ring 325 slide in the guide groove 326, the outer end surface of the elastic connecting plate 324 is fixedly connected to the inner end surface of the mounting circular plate 327, the outer end surface of the mounting circular plate 327 is fixedly connected to the inner end of the third spring 328, and the outer end of the third spring 328 is fixedly connected to the side wall of the inner end of the third mounting shell 311 away from the control module 1.

[0043] When the utility model is used, the control module 1 is fixed on the top of the detachable steel pipe, and then the steel pipe is fixed in the middle of the foundation pit. At this time, one end of the rope is fixed on the supporting structure, and the other end passes through the mounting ring 312. Then the driving ring 325 is toggled, and the driving ring 325 drives the elastic connecting plate 324, and the elastic connecting plate 324 drives the limiting block 321. The inclined surface of the limiting block 321 is fitted with the inner side wall of the inner end of the avoidance groove 322 to slide and drive the limiting block 321 to move toward the inner end of the third mounting shell 311, thereby releasing the limiting The block 321 and the limiting ring 313 are limited, the third mounting shell 311 is inserted into the second mounting shell 221, the driving ring 325 is released, and the mounting circular plate 327 is pulled under the action of the third spring 328, the mounting circular plate 327 drives the elastic connecting plate 324, the elastic connecting plate 324 drives the driving ring 325 to reset, and at the same time, the elastic connecting plate 324 drives the limiting block 321 to move, and the limiting block 321 is re-extended under the action of the second spring 323 to limit with the limiting ring 313, thereby completing the locking.

[0044] Then tighten the rope so that the second mounting shell 221 stretches the first spring 212, and the second mounting shell 221 drives the slide bar 215 to slide in the slide groove 214 on the mounting block 213 for guidance. At this time, the innermost conductive metal ring 222 is located outside the outermost contacts of the power input terminal 23 and the power output terminal 24 to form an initial state. When the supporting structure on one side is displaced, the second mounting shell 221 will be gradually pulled inward under the action of the first spring 212, thereby driving the innermost conductive metal ring 222 to connect the outermost input contact on the power input terminal 23 and the outermost output contact on the power output terminal 24. When the displacement gradually increases, the three groups of conductive metal rings 222 will gradually connect the input contact of the power input terminal 23 and the output contact on the power output terminal 24, thereby realizing a graded alarm.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. The above description is only an embodiment of the present invention and is not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A deep foundation pit support structure displacement monitoring device, comprising a control module (1), characterized in that: The control module (1) is provided with a hierarchical alarm component (2) for hierarchical alarm, and the hierarchical alarm component (2) is provided with four groups respectively located on four side walls of the control module (1), and the four groups of the hierarchical alarm components (2) are respectively provided with a quick assembly component (3) for quick disassembly and assembly; The hierarchical alarm component (2) comprises a first installation component (21), a hierarchical component (22), a power supply input terminal (23) and a power supply output terminal (24); the first installation component (21) is connected to the control module (1); the hierarchical component (22) is connected to the first installation component (21) and the quick-install component (3); and the power supply input terminal (23) and the power supply output terminal (24) are connected to the first installation component (21).

2. The deep foundation pit support structure displacement monitoring device according to claim 1 is characterized in that: The input end at the lower end of the power supply input end (23) is electrically connected to the output end on the control module (1), and the three groups of output interfaces at the upper end of the power supply output end (24) are electrically connected to the input end at the upper end of the control module (1).

3. The deep foundation pit support structure displacement monitoring device according to claim 2 is characterized in that: The first mounting assembly (21) comprises a first mounting shell (211), a first spring (212), a mounting block (213), a slide groove (214) and a slide bar (215); the inner end surfaces of the four groups of the first mounting shells (211) are respectively fixedly connected to the four side walls of the control module (1); the inner ends of the four groups of the first springs (212) are respectively fixedly connected to the four side walls of the control module (1); the outer ends of the first springs (212) are connected to the grading assembly (22); the mounting block (213) is symmetrically arranged with two groups, both of which are fixedly installed on the inner side wall of the first mounting shell (211); the inner side surface of the mounting block (213) is provided with a slide groove (214) for matching the slide bar (215) for sliding; the slide bar (215) is symmetrically arranged with two groups, and the slide bar (215) is connected to the grading assembly (22).

4. The deep foundation pit support structure displacement monitoring device according to claim 3 is characterized in that: The power supply input terminal (23) is fixedly mounted on the lower end of the outer wall of the first mounting shell (211), and three groups of output terminal contacts of the power supply input terminal (23) extend into the inner end of the first mounting shell (211), and the output terminal contacts on the power supply input terminal (23) are connected to the grading component (22); the power supply output terminal (24) is fixedly mounted on the upper end of the outer wall of the first mounting shell (211), and three groups of input terminal contacts of the power supply output terminal (24) extend into the inner end of the first mounting shell (211), and the input terminal contacts on the power supply output terminal (24) are connected to the grading component (22).

5. The deep foundation pit support structure displacement monitoring device according to claim 4 is characterized in that: The grading component (22) comprises a second mounting shell (221) and a conductive metal ring (222); the side wall of the second mounting shell (221) close to the control module (1) is fixedly connected to the outer end of the first spring (212); the second mounting shell (221) is connected to the quick-install component (3); three groups of the conductive metal rings (222) are arranged at equal intervals and are respectively fixedly mounted on the outer side wall of the second mounting shell (221); the outer side wall of the conductive metal ring (222) is fitted and connected to the output end contact of the power supply input end (23); the outer side wall of the conductive metal ring (222) is fitted and connected to the input end contact on the power supply output end (24); and the two groups of the sliding bars (215) are fixedly mounted on the rear end of the outer side wall of the second mounting shell (221).

6. The deep foundation pit support structure displacement monitoring device according to claim 5 is characterized in that: The quick-install assembly (3) comprises a second mounting assembly (31) and a locking assembly (32); the second mounting assembly (31) is connected to a second mounting shell (221), and the locking assembly (32) is connected to the second mounting assembly (31).

7. The deep foundation pit support structure displacement monitoring device according to claim 6 is characterized in that: The second mounting assembly (31) comprises a third mounting shell (311), a mounting ring (312) and a limiting ring (313); the side wall of the third mounting shell (311) close to the control module (1) is fitted and connected to the inner side wall of the inner end of the second mounting shell (221) close to the control module (1); the mounting ring (312) is fixedly mounted on the side wall of the third mounting shell (311) away from the control module (1); the limiting ring (313) is fixedly mounted on the inner side wall of the second mounting shell (221); and the third mounting shell (311) and the limiting ring (313) are connected to the locking assembly (32).

8. The deep foundation pit support structure displacement monitoring device according to claim 7 is characterized in that: The locking assembly (32) comprises a limit block (321), an avoidance groove (322), a second spring (323), an elastic connecting plate (324), a driving dial ring (325), a guide groove (326), a mounting circular plate (327) and a third spring (328); the avoidance groove (322) and the guide groove (326) are symmetrically arranged in two groups, both of which are opened on the outer side wall of the third mounting shell (311), and the avoidance groove (322) is located on the inner side of the guide groove (326); the limit block (321) and the elastic connecting plate (324) are symmetrically arranged in two groups, and the upper ends of the two groups of limit blocks (321) respectively pass through The avoidance groove (322), the inner side of the limit block (321) is an inclined surface that gradually rises from the inside to the outside, the inner end side wall of the avoidance groove (322) is an inclined surface that fits and slides with the upper inclined surface of the limit block (321), the outer side walls of the two groups of limit blocks (321) extending out of the avoidance groove (322) are both in contact with the inner side wall of the limit ring (313), the outer side walls of the two groups of limit blocks (321) that do not extend out of the avoidance groove (322) are respectively fixedly connected to the inner end surfaces of the two groups of elastic connecting plates (324), and the two ends of the second spring (323) are respectively fixedly connected to the inner side walls of the two groups of limit blocks (321).

9. The deep foundation pit support structure displacement monitoring device according to claim 8, characterized in that: The outer side walls of the outer ends of the elastic connecting plate (324) are respectively fixedly connected to the connecting columns at the inner end of the driving dial ring (325); the connecting columns at the inner end of the driving dial ring (325) slide in the guide groove (326); the outer end surface of the elastic connecting plate (324) is fixedly connected to the inner end surface of the mounting circular plate (327); the outer end surface of the mounting circular plate (327) is fixedly connected to the inner end of the third spring (328); the outer end of the third spring (328) is fixedly connected to the side wall of the inner end of the third mounting shell (311) away from the control module (1).

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