Foundation pit monitoring depth management and control equipment

Abstract

The utility model discloses foundation pit monitoring depth management and control equipment which comprises a plurality of frame bodies, a mounting plate arranged on the side wall of each frame body and a displacement sensor arranged at the bottom of the mounting plate, and the displacement sensor is used for monitoring single-point displacement of the frame bodies; the adjusting disc assemblies are arranged on the two sides of each frame body respectively, and a laser transmitter and a laser receiver are arranged on the adjusting disc assemblies on the two sides respectively; the adjusting disc assembly is used for turnover adjustment of the laser transmitter and the laser receiver on the adjusting disc assembly. According to the utility model, the displacement sensor is arranged on each frame body, so that the single-point displacement monitoring process of the frame body is realized, and when the adjusting disc assemblies on the two sides of each frame body act on the laser transmitter and the laser receiver on the adjusting disc assemblies, the turnover angles of the laser transmitter and the laser receiver can be adjusted; and the regional displacement monitoring process of the two frame bodies is further achieved, so that the comprehensiveness, accuracy and practicability of foundation pit monitoring of the equipment are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit monitoring equipment, in particular to a foundation pit monitoring depth control equipment. Background Art

[0002] Foundation pit monitoring is an important part of foundation pit construction. It refers to various observations and analyses of changes in foundation pit rock and soil properties, support structure displacement and surrounding environmental conditions during foundation pit excavation and underground engineering construction. The monitoring results are fed back in a timely manner to predict the deformation and stable state that will result after further construction. The degree of impact of the construction on the surrounding environment is determined based on the prediction to guide the design and construction and realize the so-called information-based construction. The existing foundation pit monitoring equipment embeds test elements in the support system in advance, such as vertical displacement monitoring, which uses a magnetostrictive static level to monitor the displacement of the foundation pit. The above is a single-point foundation pit monitoring process. Through the data changes of a single point, only the displacement data of a single point position of the foundation pit can be obtained, and the overall displacement of the area cannot be monitored well and intuitively. Utility Model Content

[0003] The purpose of the utility model is to provide a foundation pit monitoring depth control equipment, which realizes the single-point displacement monitoring process of the frame through the displacement sensor arranged on each frame, and the adjustment disk assembly on both sides of each frame, when acting on the laser emitter and the laser receiver thereon, can adjust the rotation angle of the laser emitter and the laser receiver, and further realize the regional displacement monitoring process of the two frames, so as to ensure the comprehensiveness, accuracy and practicality of the foundation pit monitoring of the equipment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foundation pit monitoring depth control equipment, comprising: a plurality of frames, each of the frame side walls is provided with a mounting plate, and a displacement sensor arranged at the bottom of the mounting plate, and the displacement sensor is used for single-point displacement monitoring of the frame; it also includes adjustment disk assemblies respectively arranged on both sides of each of the frames, and laser transmitters and laser receivers are respectively arranged on the adjustment disk assemblies on both sides, when the laser transmitter is docked with the laser receiver, the adjacent frames are on the same horizontal plane, and when the laser transmitter is not docked with the laser receiver, the adjacent frames are displaced; the adjustment disk assembly is used for the turnover adjustment of the laser transmitter and the laser receiver thereon, and can be used for docking the laser transmitter and the laser receiver where the frame on the opposite side is located, so as to judge the displacement of the opposite side of the foundation pit.

[0005] Preferably, each group of the adjustment disk assembly includes a disk body, and a limit groove opened on the disk body, and also includes a limit bar arranged on the disk body, and the limit column arranged at the outer end of the limit bar can slide inside the limit groove, and the laser transmitter and the laser receiver are respectively arranged on the limit bars where the adjustment disk assemblies on both sides of the frame are located.

[0006] Preferably, it also includes a displacement monitoring rod assembly for measuring the displacement degree of the two frames; the displacement monitoring rod assembly includes two plug-in columns and two connecting rods hinged at the opposite ends of the two plug-in columns, and also includes two groups of telescopic column structures arranged at the opposite ends of the two connecting rods, and the opposite ends of the two groups of telescopic column structures are installed with a spirit level assembly, when the two frames are displaced, the telescopic column structure adaptively retracts and contracts, and the spirit level assembly is used to display the displacement degree of the two frames; each group of the telescopic column structure includes a telescopic sleeve fixed to the end of the connecting rod away from the plug-in column, a telescopic rod is arranged inside the telescopic sleeve, and an elastic rope is connected between one end of the telescopic rod and the connecting rod, and the other end of the telescopic rope extends to the outer end of the telescopic sleeve and is connected to the end of the spirit level assembly.

[0007] Preferably, the level assembly includes a tube body, the tube body is fixed at opposite ends of two telescopic rods, and a sphere movably mounted inside the tube body; and also includes a center scale arranged at the center of the outer wall of the tube body.

[0008] Preferably, a plug-in sleeve is fixed on the top of each frame, and the plug-in sleeve is adapted to be plugged into the plug-in column, and a threaded hole is provided on the side wall of the plug-in sleeve, and also includes a locking bolt arranged inside the threaded hole.

[0009] Preferably, a pit bottom monitoring assembly is also provided at the bottom of each frame, and the pit bottom monitoring assembly is used to monitor the local displacement of the bottom of the foundation pit; the pit bottom monitoring assembly includes a through hole opened at the bottom of the frame, and a connecting rod arranged in the through hole, one end of the connecting rod extends toward the bottom of the foundation pit and is fixed with a lifting block, and the other end of the connecting rod extends to the interior of the frame and is provided with a wedge block transmission assembly, and a pressure sensor is provided on the wedge block transmission assembly, when the bottom of the foundation pit is displaced, the lifting block moves adaptively to change the pressure value of the pressure sensor on the wedge block transmission assembly.

[0010] Preferably, the wedge block transmission assembly includes two symmetrically distributed wedge block bodies, and the two wedge block bodies are fixed to the inner bottom of the frame; and an installation frame fixed to the end of the connecting rod away from the lifting block, and a first spring is sleeved on the outer wall of the connecting rod between the installation frame and the inner bottom of the frame, and the first spring is used for resetting the connecting rod; it also includes connecting holes respectively opened at both ends of the installation frame, and a transmission column is transversely arranged inside each connecting hole, and one end of the transmission column is in contact with the wedge surface where the corresponding wedge block body is located, and the other end is connected to the pressure sensor through a second spring arranged at its end. When the connecting rod moves longitudinally, so that the two transmission columns run relative to and apart from each other, the pressure values ​​of the pressure sensors at the opposite ends of the two transmission columns change.

[0011] Preferably, an audible and visual alarm is also provided on the top of each frame.

[0012] Preferably, each of the frame rear walls is further provided with a plurality of mounting holes, and each mounting hole is provided with a mounting bolt.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can be used for single-point displacement monitoring of the frame through the displacement sensor arranged on each frame, and the monitoring information of the displacement sensor is sent to the terminal so that the staff can monitor the single-point displacement of the frame in real time; and the laser transmitter and the laser receiver are respectively arranged on the adjustment disk assembly on both sides of each frame to realize the displacement monitoring of the two frame positions, and then perform regional displacement monitoring of the foundation pit. Since the adjustment disk assembly is used for the turnover adjustment of the laser transmitter and the laser receiver thereon, when it is necessary to monitor a certain area of ​​the foundation pit, the laser transmitter and the laser receiver on the two frames in the area are docked. If the docking is successful, the two frames are on the same horizontal plane, indicating that the foundation pit where the two frames are located has not undergone displacement. Similarly, if the two fail to dock successfully, displacement occurs and subsequent processing is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0016] Figure 2 This is a schematic diagram of the third perspective structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 4 It is a partial enlarged structural schematic diagram of the utility model;

[0019] Figure 5 It is a schematic diagram of the wireframe structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the working state structure of the utility model;

[0021] Figure 7 for Figure 6 Wireframe structure diagram.

[0022] In the figure: 1. frame; 2. mounting plate; 3. displacement sensor; 4. disk; 5. limit strip; 6. limit groove; 8. wedge block body; 9. mounting frame; 10. first spring; 11. transmission column; 12. second spring; 13. pressure sensor; 14. sound and light alarm; 15. connecting rod; 16. lifting block; 17. plug-in sleeve; 18. connecting rod; 19. telescopic rod; 20. tube body; 21. center scale; 22. mounting bolt; 23. locking bolt; 24. plug-in column; 25. telescopic sleeve; 26. elastic rope; 27. sphere; 28. mounting hole. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.

[0024] Example 1

[0025] See also Figures 1 to 7 The utility model preferably provides a technical solution: a foundation pit monitoring depth control equipment, including: a plurality of frames 1, each frame 1 side wall is provided with a mounting plate 2, and a displacement sensor 3 arranged at the bottom of the mounting plate 2, and the displacement sensor 3 is used for single-point displacement monitoring of the frame 1; it also includes adjustment disk assemblies respectively arranged on both sides of each frame 1, and laser transmitters and laser receivers are respectively arranged on the adjustment disk assemblies on both sides. When the laser transmitter is docked with the laser receiver, the adjacent frames 1 are on the same horizontal plane, and when the laser transmitter is not docked with the laser receiver, the adjacent frames 1 are displaced; the adjustment disk assembly is used for the turnover adjustment of the laser transmitter and the laser receiver thereon, and can be used for docking the laser transmitter and the laser receiver where the frame 1 on the opposite side is located, so as to judge the displacement of the opposite side of the foundation pit.

[0026] In this embodiment, a plurality of frames 1 are arranged inside the foundation pit, and the position of each frame 1 corresponds to a single point position of the foundation pit;

[0027] The displacement sensor 3 provided on each frame 1 can be used for monitoring the single-point displacement of the frame 1. The monitoring information of the displacement sensor 3 is sent to the terminal so that the staff can monitor the single-point displacement of the frame 1 in real time.

[0028] The laser transmitter and the laser receiver are respectively arranged on the adjustment disk assembly on both sides of each frame 1 to realize the displacement monitoring of the positions of the two frames 1, and then to perform regional displacement monitoring of the foundation pit. Figure 1 , 3 As shown, since the adjustment disk assembly is used for the turnover adjustment of the laser transmitter and the laser receiver thereon, when it is necessary to monitor a certain area of ​​the foundation pit, the laser transmitters and the laser receivers on the two frames 1 in the area are docked, as shown in FIG. Figure 6 , 7 As shown, if the docking is successful, the two frames 1 are on the same horizontal plane, indicating that the foundation pit where the two frames 1 are located has not been displaced. Similarly, if the two are not successfully docked, there is a displacement, which requires subsequent processing;

[0029] In this process, the displacement sensor 3 provided on each frame 1 is used to realize the single-point displacement monitoring process of the frame 1, and the adjustment disk assembly on both sides of each frame 1, when acting on the laser emitter and the laser receiver thereon, can adjust the rotation angle of the laser emitter and the laser receiver, and further realize the regional displacement monitoring process of the two frames 1, so as to ensure the comprehensiveness, accuracy and practicality of the foundation pit monitoring of the equipment.

[0030] Furthermore, each group of adjustment disk assemblies includes a disk body 4, and a limit groove 6 opened on the disk body 4, and also includes a limit bar 5 arranged on the disk body 4, and the limit column arranged at the outer end of the limit bar 5 can slide inside the limit groove 6, and the laser transmitter and the laser receiver are respectively arranged on the limit bar 5 where the adjustment disk assemblies on both sides of the frame 1 are located.

[0031] Here, the limiting column arranged at the outer end of the limiting strip 5 can slide inside the limiting groove 6. Figure 1 , 2 As shown in Figure 3, the laser transmitter and the laser receiver are respectively arranged on the limit bars 5 where the adjustment disk assemblies are located on both sides of the frame 1. Therefore, the deflection of the limit bars 5 is adjusted to achieve the adjustment of the emission angle of the laser transmitter and the receiving angle of the laser receiver, thereby facilitating the smooth docking of the laser transmitter or laser receiver on the frame 1 with the laser receiver or laser transmitter on another frame 1.

[0032] Example 2

[0033] As another embodiment of the present invention, it also includes a displacement monitoring rod assembly for measuring the displacement degree of the two frames 1; the displacement monitoring rod assembly includes two plug-in columns 24, and two connecting rods 18 hinged at the opposite ends of the two plug-in columns 24, and also includes two groups of telescopic column structures arranged at the opposite ends of the two connecting rods 18, and the opposite ends of the two groups of telescopic column structures are installed with a spirit level assembly. When the two frames 1 are displaced, the telescopic column structure adaptively retracts and contracts, and the spirit level assembly is used to display the displacement degree of the two frames 1; each group of telescopic column structures includes a telescopic sleeve 25 fixed to the end of the connecting rod 18 away from the plug-in column 24, a telescopic rod 19 is arranged inside the telescopic sleeve 25, and an elastic rope 26 is connected between one end of the telescopic rod 19 and the connecting rod 18, and the other end of the elastic rope 26 extends to the outer end of the telescopic sleeve 25 and is connected to the end of the spirit level assembly.

[0034] Combination Figure 3 , 5 As shown in , 7, since one end of the connecting rod 18 is hinged to the plug-in column 24, and the other end thereof is connected to the end of the level assembly through the telescopic column structure, when the plug-in column 24 is placed on the two frames 1, when the two frames 1 are displaced to a certain extent, the connecting rod 18 is driven to deflect, the telescopic column structure is extended and retracted, and the level assembly is tilted. By judging the degree of inclination of the level assembly, the degree of displacement and inclination of the two frames 1 can be understood to a certain extent;

[0035] like Figure 5 As shown, the telescopic rod 19 where the telescopic column structure is located can slide inside the telescopic sleeve 25, and an elastic rope 26 is connected between one end of the telescopic rod 19 and the connecting rod 18, and the other end is connected to the end of the level assembly. Therefore, when the two frames 1 are displaced, the telescopic rod 19 is telescoped inside the telescopic sleeve 25, and the elastic rope 26 is used to ensure that when the level assembly is in a tilted state, it is always maintained between the two telescopic rods 19, and when the two frames 1 are reset, the elastic rope 26 drives the level assembly to reset.

[0036] Furthermore, the level assembly includes a tube body 20 , which is fixed at opposite ends of the two telescopic rods 19 , and a sphere 27 movably mounted inside the tube body 20 ; and also includes a center scale 21 arranged at the center of the outer wall of the tube body 20 .

[0037] Here, if Figure 5 , 7 As shown, the tube body 20 is made of transparent material, and the outer wall of the tube body 20 is preferably provided with a scale, and the center scale 21 is placed at the center of the scale. When the tube body 20 is tilted, the ball 27 rolls adaptively, and the tilt degree of the level assembly, that is, the displacement degree of the two frames 1, can be understood by judging the rolling distance of the ball 27.

[0038] Furthermore, a plug sleeve 17 is fixed on the top of each frame 1, and the plug sleeve 17 is adapted to be plugged with the plug post 24, and a threaded hole is provided on the side wall of the plug sleeve 17, and a locking bolt 23 is provided inside the threaded hole.

[0039] Here, the plug sleeve 17 arranged on the top of each frame 1 is adapted to be plugged into the plug post 24 so that the displacement monitoring rod assembly can be installed on the two frames 1.

[0040] Example 3

[0041] As other embodiments of the utility model, a pit bottom monitoring component is also provided at the bottom of each frame 1, and the pit bottom monitoring component is used to monitor the local displacement of the bottom of the foundation pit; the pit bottom monitoring component includes a through hole opened at the bottom of the frame 1, and a connecting rod 15 arranged in the through hole, one end of the connecting rod 15 extends toward the bottom of the foundation pit and is fixed with a lifting block 16, and the other end thereof extends to the interior of the frame 1 and is provided with a wedge block transmission assembly, and a pressure sensor 13 is provided on the wedge block transmission assembly. When the bottom of the foundation pit is displaced, the lifting block 16 moves adaptively to change the pressure value of the pressure sensor 13 on the wedge block transmission assembly.

[0042] like Figure 4 , 5 As shown, since the connecting rod 15 can move longitudinally inside the through hole at the bottom of the frame 1, and the lifting block 16 at its bottom end is in contact with the bottom of the foundation pit, its top end extends into the frame 1 and is provided with a wedge block transmission assembly, and when the bottom of the foundation pit collapses or other displacement conditions occur, the lifting block 16 moves adaptively, further causing the pressure sensor 13 on the wedge block transmission assembly to have a change in pressure value, and when the pressure sensor 13 has a value change, the data can be transmitted to the terminal so that the staff can understand the displacement of the pit bottom in real time.

[0043] Furthermore, the wedge transmission assembly includes two symmetrically distributed wedge bodies 8, and the two wedge bodies 8 are fixed to the inner bottom of the frame 1; and an installation frame 9 fixed to the end of the connecting rod 15 away from the lifting block 16, and a first spring 10 is sleeved on the outer wall of the connecting rod 15 between the installation frame 9 and the inner bottom of the frame 1, and the first spring 10 is used for resetting the connecting rod 15; it also includes connecting holes respectively opened at both ends of the installation frame 9, and a transmission column 11 is horizontally arranged inside each connecting hole, and one end of the transmission column 11 is in contact with the wedge surface where the corresponding wedge body 8 is located, and the other end is connected to the pressure sensor 13 through the second spring 12 arranged at its end. When the connecting rod 15 moves longitudinally, so that the two transmission columns 11 run relative to and apart from each other, the pressure values ​​of the pressure sensors 13 at the opposite ends of the two transmission columns 11 change.

[0044] like Figure 1 , 4As shown, since the mounting frame 9 is fixed to the end of the connecting rod 15 away from the lifting block 16, and transmission columns 11 are respectively provided at both ends of the mounting frame 9, and the opposite ends of the two transmission columns 11 are connected to the pressure sensor 13 through the second spring 12, and the opposite ends thereof are respectively fitted with the wedge surfaces where the two wedge block bodies 8 are located. Therefore, when the connecting rod 15 moves, the two transmission columns 11 are caused to move relative to and apart from each other, and the pressure values ​​of the pressure sensors 13 at the opposite ends of the two transmission columns 11 change.

[0045] Furthermore, a sound and light alarm 14 is also arranged on the top of each frame 1 .

[0046] like Figure 4 As shown, when the pressure sensor 13 sends the pressure information to the terminal, the terminal receives and analyzes the pressure information. When the pressure information exceeds its set value, a signal can be sent to the sound and light alarm 14 to drive the sound and light alarm 14 to operate and remind the staff to handle it in time.

[0047] Furthermore, a plurality of mounting holes 28 are provided on the rear wall of each frame 1, and a mounting bolt 22 is provided inside each mounting hole 28, so as to facilitate the mounting of the frame 1 inside the foundation pit. Figure 2 , 4 , as shown in Figure 5.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and buckle matching, and for example, through the method of bolt connection, etc.

[0049] The above clearly and completely describes the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0050] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A foundation pit monitoring depth control device, characterized in that: include: A plurality of frames (1), each of the frame (1) having a mounting plate (2) disposed on a side wall thereof, and a displacement sensor (3) disposed at the bottom of the mounting plate (2), wherein the displacement sensor (3) is used for monitoring a single-point displacement of the frame (1); It also includes adjustment disk assemblies respectively arranged on both sides of each frame (1), and laser emitters and laser receivers are respectively arranged on the adjustment disk assemblies on both sides. When the laser emitters and laser receivers are docked, the adjacent frames (1) are on the same horizontal plane, and when the laser emitters and laser receivers are not docked, the adjacent frames (1) are displaced. The adjustment disk assembly is used for the rotational adjustment of the laser transmitter and the laser receiver thereon, and can be used for docking the laser transmitter and the laser receiver where the frame (1) is located on the opposite side, so as to determine the displacement condition of the opposite side of the foundation pit.

2. A foundation pit monitoring depth control device according to claim 1, characterized in that: Each group of the adjusting disk assemblies comprises a disk body (4), and a limiting groove (6) provided on the disk body (4), and also comprises a limiting bar (5) arranged on the disk body (4), and a limiting column arranged at the outer end of the limiting bar (5) can slide inside the limiting groove (6), and the laser transmitter and the laser receiver are respectively arranged on the limiting bars (5) where the adjusting disk assemblies are located on both sides of the frame (1).

3. The foundation pit monitoring depth control device according to claim 1 is characterized in that: It also includes a displacement monitoring rod assembly for measuring the displacement degree of the two frames (1); The displacement monitoring rod assembly comprises two plug-in columns (24), and two connecting rods (18) hinged at opposite ends of the two plug-in columns (24), and also comprises two sets of telescopic column structures arranged at opposite ends of the two connecting rods (18), and level assemblies are installed at opposite ends of the two sets of telescopic column structures, when the two frames (1) are displaced, the telescopic column structures are adaptively extended and retracted, and the level assemblies are used to display the degree of displacement of the two frames (1); Each group of telescopic column structures comprises a telescopic sleeve (25) fixed to one end of the connecting rod (18) away from the plug-in column (24), a telescopic rod (19) is arranged inside the telescopic sleeve (25), and an elastic rope (26) is connected between one end of the telescopic rod (19) and the connecting rod (18), and the other end of the elastic rope (26) extends to the outer end of the telescopic sleeve (25) and is connected to the end of the level assembly.

4. A foundation pit monitoring depth control device according to claim 3, characterized in that: The level assembly comprises a tube body (20), the tube body (20) being fixed to opposite ends of two telescopic rods (19), and a spherical body (27) being movably mounted inside the tube body (20); It also includes a center scale (21) arranged at the center of the outer wall of the tube body (20).

5. The foundation pit monitoring depth control device according to claim 1 is characterized in that: A plug sleeve (17) is also fixed on the top of each frame (1), and the plug sleeve (17) is adapted to be plugged into the plug post (24), and a threaded hole is provided on the side wall of the plug sleeve (17), and a locking bolt (23) is also provided inside the threaded hole.

6. The foundation pit monitoring depth control device according to claim 1 is characterized by: A pit bottom monitoring component is also provided at the bottom of each frame (1), and the pit bottom monitoring component is used to monitor the local displacement of the bottom of the foundation pit; The pit bottom monitoring component comprises a through hole opened at the bottom of the frame (1), and a connecting rod (15) arranged in the through hole, one end of the connecting rod (15) extends toward the bottom of the foundation pit and is fixed with a lifting block (16), and the other end of the connecting rod (15) extends into the interior of the frame (1) and is provided with a wedge block transmission component, and a pressure sensor (13) is provided on the wedge block transmission component. When the bottom of the foundation pit is displaced, the lifting block (16) moves adaptively to change the pressure value of the pressure sensor (13) on the wedge block transmission component.

7. A foundation pit monitoring depth control device according to claim 6, characterized in that: The wedge block transmission assembly comprises two symmetrically distributed wedge block bodies (8), and the two wedge block bodies (8) are fixed to the inner bottom of the frame (1); and a mounting frame (9) fixed to the end of the connecting rod (15) away from the lifting block (16), and a first spring (10) is sleeved on the outer wall of the connecting rod (15) between the mounting frame (9) and the inner bottom of the frame body (1), and the first spring (10) is used for resetting the connecting rod (15); It also includes connection holes respectively opened at both ends of the installation frame (9), a transmission column (11) is transversely arranged inside each connection hole, and one end of the transmission column (11) is in contact with the wedge surface where the corresponding wedge block body (8) is located, and the other end is connected to the pressure sensor (13) through a second spring (12) arranged at its end. When the connecting rod (15) moves longitudinally, the two transmission columns (11) are moved relative to and away from each other, so that the pressure values ​​of the pressure sensors (13) at the opposite ends of the two transmission columns (11) change.

8. The foundation pit monitoring depth control device according to claim 1 is characterized by: A sound and light alarm (14) is also provided on the top of each frame (1).

9. The foundation pit monitoring depth control device according to claim 1, characterized in that: A plurality of mounting holes (28) are also provided on the rear wall of each frame body (1), and a mounting bolt (22) is arranged inside each mounting hole (28).

Images