A foundation pit monitoring system

Abstract

The present application discloses a foundation pit monitoring system, which belongs to the field of building construction, and comprises a column installed on the ground, a prefabricated groove is provided on the ground, a prefabricated seat is fixedly provided in the prefabricated groove, a plug-in groove for the column to be plugged in is provided in the prefabricated seat, a slide groove is provided on the inner wall of the plug-in groove, a sliding limit block is provided in the slide groove, and a limit groove for the limit block to be plugged in is provided on the column; a first spring is provided in the slide groove, and the two ends of the first spring are respectively fixedly connected to the limit block and the inner wall of the slide groove, and a limit assembly for limiting the limit block is provided in the plug-in groove. The present application has the effect of facilitating the staff to connect the monitoring device to the ground, thereby reducing the work intensity of the staff.

Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to a foundation pit monitoring system. Background Art

[0002] In the process of construction, in order to ensure that the building will not sink or deflect during the construction process, and also to ensure the subsequent safety of the building, it is usually necessary to dig at the construction location by digging a building foundation pit. In the process of excavating the foundation pit, in order to ensure safety and understand the progress of the construction, the construction site is generally monitored in real time through a foundation pit monitoring system, which is generally composed of monitoring devices such as cameras.

[0003] In the related technology, the monitoring device includes a column, the bottom of which is fixedly connected to a mounting plate, on which a threaded hole is provided, and a worker installs the monitoring device on the ground by bolts; a rotating support rod is movably hinged at the top of the column, a clamping assembly is provided on the top side of the column, the clamping assembly is movably clamped with the bottom end of the rotating support rod, the top of the rotating support rod is fixedly connected to a fixing seat, and a monitoring camera is movably clamped inside the fixing seat.

[0004] With respect to the above-mentioned related technologies, the inventor believes that when the staff needs to install the monitoring device on the ground, they first need to align the threaded holes on the mounting plate with the threaded holes on the ground, and then insert the bolts and tighten them, thereby increasing the workload of the staff. Summary of the invention

[0005] In order to facilitate the staff to connect the monitoring device to the ground, thereby reducing the staff's work intensity, the present application provides a foundation pit monitoring system.

[0006] The foundation pit monitoring system provided in this application adopts the following technical solution:

[0007] A foundation pit monitoring system comprises a column installed on the ground, a prefabricated groove is provided on the ground, a prefabricated seat is fixedly arranged in the prefabricated groove, a plug-in groove for the column to be plugged in is provided in the prefabricated seat, a slide groove is provided on the inner wall of the plug-in groove, a sliding limit block is provided in the slide groove, and a limit groove for the limit block to be plugged in is provided on the column; a first spring is provided in the slide groove, and two ends of the first spring are respectively fixedly connected to the limit block and the inner wall of the slide groove; a limit assembly for limiting the limit block is provided in the plug-in groove.

[0008] By adopting the above technical solution, before the staff plugs the column into the plug-in slot, the limit block is completely located in the slide slot under the action of the limit assembly, and the first spring is in a compressed state. Later, when the staff needs to install the column on the ground, the staff first moves the column to be plugged into the plug-in slot. During the plugging process of the column and the plug-in slot, the limiting effect of the limit assembly on the limit block can be released. Subsequently, when the column moves to the position corresponding to the limit block and the limit slot, the elastic force of the first spring can push the limit block to be plugged into the limit slot, thereby reducing the possibility of separation between the column and the prefabricated seat, and making it easier for the staff to install the column on the ground.

[0009] Preferably, the limit assembly includes a limit plate and a second spring, the limit plate slides in the plug-in slot, the limit plate can abut against the limit block, and the limit plate can abut against the column; the two ends of the second spring are respectively fixedly connected to the limit plate and the inner wall of the plug-in slot.

[0010] By adopting the above technical solution, before the column is plugged into the plug-in slot, the limit plate abuts against the limit block, and the second spring is in a normal state. Then, when the column presses the limit plate to move, the second spring is compressed. Then, when the limit plate moves to a position away from the limit block, the limit block can contact the column and be slidably connected to the side wall of the column.

[0011] Preferably, a push plate is slidably provided on the prefabricated seat, a push rod is fixedly provided on the push plate, the push rod is passed through and slides on the inner wall of the slide groove, an inclined surface is provided on the end of the push rod close to the limit block, a slot for the push rod to be inserted is provided on the limit block, and the inclined surface can abut and cooperate with the inner wall of the end of the slot away from the column.

[0012] By adopting the above technical solution, when the staff needs to disassemble the detection device, they first push the push plate in the direction close to the prefabricated seat, and the push plate drives the push rod to move. Then the push rod can be inserted into the slot on the limit block, and the limit block is pushed to move away from the column through the inclined surface. When the limit block moves to a position away from the column, it is convenient for the staff to disassemble the detection device.

[0013] Preferably, a third spring is provided on the prefabricated seat, and two ends of the third spring are respectively fixedly connected to the push plate and the opposite inner wall of the prefabricated seat.

[0014] By adopting the above technical solution, when the staff moves the push plate toward the prefabricated seat, the third spring is compressed. Then, when the staff releases the push plate, the elastic force of the third spring can push the push plate to move away from the prefabricated seat, and finally drive the push rod to move to a position away from the limit block, thereby facilitating the staff to disassemble the device next time.

[0015] Preferably, a plurality of abutment plates are slidably disposed on the prefabricated seat, and the abutment plates can abut and cooperate with the columns. A driving assembly for driving the abutment plates to move is provided in the prefabricated seat.

[0016] By adopting the above technical solution, before the column is plugged into the insertion groove, the abutment plate is located away from the column. Later, during the process of plugging the column into the insertion groove, the column can drive the abutment plate to move toward the direction close to the column through the driving assembly. Finally, when the column is installed on the prefabricated seat, the abutment plate can abut against the column, thereby supporting the column and reducing the intensity of the column shaking.

[0017] Preferably, a storage groove is provided in the prefabricated seat, and the driving assembly comprises a threaded rod, a threaded sleeve, a gear, a plurality of racks and a plurality of driving rods, one end of the threaded rod is fixedly connected to the limit plate, the threaded sleeve is rotatably arranged on the inner wall of the storage groove, the threaded rod is penetrated and slidably moved on the inner wall of the storage groove, and the threaded rod is threadably matched with the threaded sleeve, and the gear is fixedly arranged on the threaded sleeve;

[0018] The plurality of racks are fixedly connected to the plurality of driving rods in a one-to-one correspondence, the racks slide in the storage slot, the racks are meshed with the gear, one end of the driving rod away from the rack is passed through the outside of the prefabricated seat, and the driving rod slides on the side wall of the prefabricated seat; the plurality of driving rods are fixedly connected to the plurality of abutment plates in a one-to-one correspondence.

[0019] By adopting the above technical solution, when the column pushes the limit plate to move, the movement of the limit plate drives the screw to move, the movement of the screw can drive the threaded sleeve to rotate, the rotation of the threaded sleeve drives the gear to rotate, the rotation of the gear drives the rack to move, the movement of the rack drives the drive rod to move, and the drive rod drives the abutment plate to move in the direction close to the column, thereby facilitating the movement of the abutment plate.

[0020] Preferably, abutment plate and a fourth spring are provided on the abutment plate, and two ends of the fourth spring are respectively fixedly connected to the abutment plate and the relative inner wall of the abutment plate; the abutment plate can abut against the column.

[0021] By adopting the above technical solution, when the abutment plate moves toward the direction close to the column, it can drive the clamping plate to move. The clamping plate first contacts the column, and then when the abutment plate continues to move toward the direction close to the column, the clamping plate can compress the fourth spring to move. When the column stops moving, the elastic force of the fourth spring can push the clamping plate to press against the column, thereby further improving the supporting capacity of the column.

[0022] Preferably, a first sleeve is fixedly provided on the abutment plate, a slide rod slides inside the first sleeve, and one end of the slide rod away from the first sleeve is fixedly connected to the abutment plate; the third spring is simultaneously sleeved on the first sleeve and the slide rod.

[0023] By adopting the above technical solution, when the clamping plate abuts against the column and the column continues to move toward the prefabricated seat, the clamping plate tends to move away from the prefabricated seat under the action of friction, which may cause the fourth spring to twist and be damaged. Therefore, when the fourth spring is compressed, the set sliding rod can slide in the inner cavity of the first sleeve, thereby reducing the possibility of twisting and being damaged by the fourth spring.

[0024] Preferably, a fixed block is fixedly provided on the prefabricated seat, a second sleeve is fixedly provided on the fixed block, a support rod is slidably provided in the second sleeve, one end of the support rod away from the second sleeve is fixedly connected to the driving rod, a positioning rod is penetrated and slidably provided on the side wall of the second sleeve, and a positioning groove for the positioning rod to be inserted is provided on the support rod.

[0025] By adopting the above technical solution, when the driving rod stops moving, the staff can insert the positioning rod and insert the positioning rod into the positioning hole, so as to support the driving rod and reduce the possibility of the driving rod breaking.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Before the staff inserts the column into the insertion slot, the limit block is completely located in the slide slot under the action of the limit assembly. At this time, the first spring is in a compressed state. Later, when the staff needs to install the column on the ground, the staff first moves the column to insert it into the insertion slot. During the insertion of the column and the insertion slot, the limit effect of the limit assembly on the limit block can be released. Then, when the column moves to the position corresponding to the limit block and the limit slot, the elastic force of the first spring can push the limit block to be inserted into the limit slot, thereby reducing the possibility of separation between the column and the prefabricated seat, and making it easier for the staff to install the column on the ground;

[0028] 2. Before the column is plugged into the plug-in slot, the limit plate abuts against the limit block, and the second spring is in a normal state. Then, when the column presses the limit plate to move, the second spring is compressed. Then, when the limit plate moves to a position away from the limit block, the limit block can contact the column and be slidably connected to the side wall of the column;

[0029] 3. When the staff needs to disassemble the detection device, first push the push plate toward the direction close to the prefabricated seat, and the push plate drives the push rod to move. Then the push rod can be inserted into the slot on the limit block, and the limit block is pushed away from the column through the inclined surface. When the limit block moves to a position away from the column, it is convenient for the staff to disassemble the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the structure of the limiting plate highlighted in the embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the structure of the gears highlighted in the embodiment of the present application;

[0033] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0034] Description of reference numerals:

[0035] 1. Column; 2. Prefabricated groove; 3. Prefabricated seat; 4. Plug-in groove; 5. Slide groove; 6. Limit block; 7. Limit groove; 8. First spring; 9. Limit assembly; 10. Limit plate; 11. Second spring; 12. Push plate; 13. Push rod; 14. Inclined surface; 15. Slot; 16. Third spring; 17. Abutment plate; 18. Drive assembly; 19. Storage groove; 20. Threaded rod; 21. Threaded sleeve; 22. Gear; 23. Rack; 24. Drive rod; 25. Abutment plate; 26. Fourth spring; 27. First sleeve; 28. Slide rod; 29. ​​Fixed block; 30. Second sleeve; 31. Support rod; 32. Positioning rod; 33. Positioning groove. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The present application embodiment discloses a foundation pit monitoring system. Figure 1 and Figure 2As shown, it includes a column 1 installed on the ground, a prefabricated groove 2 is opened on the ground, a prefabricated seat 3 is inserted and fixed in the prefabricated groove 2, the prefabricated seat 3 is in the shape of a rectangular parallelepiped, and a plug-in groove 4 for plugging in the column 1 is opened on the top side wall of the prefabricated seat 3, the plug-in groove 4 extends in the vertical direction, and a plurality of slide grooves 5 are opened on the inner wall of the plug-in groove 4, the slide groove 5 extends in the horizontal direction, and a limit block 6 is slidable in the horizontal direction in the slide groove 5, the limit block 6 is in the shape of a rectangular parallelepiped, and a plurality of limit grooves 7 for plugging in the limit block 6 are opened on the side wall around the bottom end of the column 1; a first spring 8 is arranged in the slide groove 5, the first spring 8 is arranged horizontally, and the two ends of the first spring 8 are respectively welded and fixed to the limit block 6 and the inner wall of the end of the slide groove 5 away from the column 1, and a limit component 9 for limiting the limit block 6 is provided in the plug-in groove 4.

[0038] like Figure 1 and Figure 2 As shown, the limit assembly 9 includes a limit plate 10 and a second spring 11. The limit plate 10 is in the shape of a circular plate. The limit plate 10 slides in the plug-in slot 4 along the vertical direction. The limit plate 10 can abut against the limit block 6. The limit plate 10 can abut against the bottom end of the column 1. There are multiple second springs 11 and they are all vertically arranged. The upper and lower ends of the second spring 11 are respectively welded and fixed to the limit plate 10 and the inner bottom wall of the plug-in slot 4.

[0039] like Figure 1 and Figure 2 As shown, before the staff plugs the column 1 into the insertion slot 4, the limit plate 10 abuts against the limit block 6. At this time, the second spring 11 is in a normal state, and the limit block 6 is completely located in the slide slot 5. At this time, the first spring 8 is in a compressed state. Later, when the staff needs to install the column 1 on the ground, the staff first moves the column 1 and plugs it into the insertion slot 4. During the plugging process of the column 1 and the insertion slot 4, the column 1 can press the limit plate 10 to move, and the second spring 11 is compressed. Later, when the limit plate 10 moves to a position away from the limit block 6, the limit block 6 can contact with the column 1 and be slidably connected to the side wall of the column 1; then when the column 1 moves to the position corresponding to the limit block 6 and the limit slot 7, the elastic force of the first spring 8 can push the limit block 6 to be plugged into the limit slot 7, thereby reducing the possibility of separation between the column 1 and the prefabricated seat 3, and thus making it easier for the staff to install the column 1 on the ground.

[0040] like Figure 1 and Figure 2As shown, a push plate 12 is provided at the top of the prefabricated seat 3 for sliding in the vertical direction. The push plate 12 is in the shape of a circular ring plate. A plurality of push rods 13 are welded and fixed to the bottom side wall of the push plate 12. The push rods 13 are in the shape of a rectangular parallelepiped. The plurality of push rods 13 are arranged corresponding to the plurality of slide grooves 5. The push rods 13 are penetrated and slide on the inner wall of the slide groove 5 in the vertical direction. A slope 14 is provided at the bottom end of the push rod 13. A slot 15 for inserting the push rod 13 is provided on the top side wall of the limit block 6. The slope 14 can abut and cooperate with the inner wall of the slot 15 at one end away from the column 1; a plurality of third springs 16 are provided at the top of the prefabricated seat 3. The third springs 16 are vertically arranged. The upper and lower ends of the third springs 16 are respectively welded and fixed to the push plate 12 and the relative inner walls of the prefabricated seat 3.

[0041] like Figure 1 and Figure 2 As shown, when the staff needs to disassemble the detection device, they first push the push plate 12 in the direction close to the prefabricated seat 3. At this time, the third spring 16 is compressed, and the push plate 12 drives the push rod 13 to move. Then the push rod 13 can be inserted into the slot 15 on the limit block 6, and the limit block 6 is pushed to move in the direction away from the column 1 through the inclined surface 14. When the limit block 6 moves to a position away from the column 1, it is convenient for the staff to disassemble the detection device; thereafter, when the staff releases the push plate 12, the elastic force of the third spring 16 can push the push plate 12 to move in the direction away from the prefabricated seat 3, and finally drives the push rod 13 to move to a position away from the limit block 6, so as to facilitate the staff to disassemble the device next time.

[0042] like Figure 2 and Figure 3 As shown, the top side walls of the prefabricated seat 3 have two abutment plates 17 that slide toward or away from each other. The abutment plates 17 are arc-shaped plates that can abut and cooperate with the column 1. A driving component 18 is provided in the prefabricated seat 3 to drive the two abutment plates 17 to move.

[0043] like Figure 2 and Figure 3 As shown, a storage groove 19 is provided in the prefabricated seat 3, and the storage groove 19 is located below the plug-in groove 4. The driving assembly 18 includes a threaded rod 20, a threaded sleeve 21, a gear 22, two racks 23 and two driving rods 24. The threaded rod 20 is vertically arranged, and the top of the threaded rod 20 is welded and fixed to the bottom side wall of the limiting plate 10. The threaded sleeve 21 is vertically arranged, and the upper and lower ends of the threaded sleeve 21 are rotatably connected to the upper and lower inner walls of the storage groove 19 through bearings respectively. The bottom end of the threaded rod 20 is penetrated and slides on the inner wall of the storage groove 19 in the vertical direction, and the threaded rod 20 is threadedly matched with the threaded sleeve 21, and the gear 22 is sleeved and fixed on the threaded sleeve 21.

[0044] like Figure 2 and Figure 3As shown, the two racks 23 are fixedly connected with the two driving rods 24 in a one-to-one correspondence, the two racks 23 are both horizontally arranged, and the two racks 23 slide toward each other or back to back in the storage groove 19, the racks 23 are meshed with the gear 22, the bottom end of the driving rod 24 is passed through the inner wall of the storage groove 19 and extends to the outside of the prefabricated seat 3, and the driving rod 24 slides in the horizontal direction on the side wall of the prefabricated seat 3; the two driving rods 24 are welded and fixed to the two abutment plates 17 in a one-to-one correspondence.

[0045] like Figure 2 and Figure 3 As shown, before the column 1 is plugged into the insertion groove 4, the abutment plate 17 is located away from the column 1. Later, during the process of plugging the column 1 into the insertion groove 4, the column 1 can push the limit plate 10 to move, and the movement of the limit plate 10 drives the screw to move. The movement of the screw can drive the threaded sleeve 21 to rotate, and the rotation of the threaded sleeve 21 drives the gear 22 to rotate. The rotation of the gear 22 drives the rack 23 to move, and the movement of the rack 23 drives the drive rod 24 to move. The drive rod 24 drives the abutment plate 17 to move toward the column 1. Finally, when the column 1 is installed on the prefabricated seat 3, the abutment plate 17 can abut on the column 1, thereby supporting the column 1 and reducing the intensity of the shaking of the column 1.

[0046] like Figure 2 and Figure 4 As shown, a clamping plate 25 and a fourth spring 26 are provided on one side of the abutment plate 17 close to the column 1. The clamping plate 25 is an arc-shaped plate, and the fourth spring 26 is horizontally arranged. The two ends of the fourth spring 26 are respectively welded and fixed to the relative inner walls of the clamping plate 25 and the abutment plate 17; the clamping plate 25 can abut against the column 1.

[0047] like Figure 2 and Figure 4 As shown, when the abutment plate 17 moves toward the direction close to the column 1, it can drive the clamping plate 25 to move. The clamping plate 25 first contacts the column 1. Then, when the abutment plate 17 continues to move toward the direction close to the column 1, the clamping plate 25 can compress the fourth spring 26 to move. When the column 1 stops moving, the elastic force of the fourth spring 26 can push the clamping plate 25 to press against the column 1, thereby further improving the supporting performance of the column 1.

[0048] like Figure 2 and Figure 4 As shown, a first sleeve 27 is welded and fixed to one side of the abutment plate 17 close to the clamping plate 25. The first sleeve 27 is horizontally arranged. A slide rod 28 slides horizontally in the first sleeve 27. One end of the slide rod 28 away from the first sleeve 27 is welded and fixed to the clamping plate 25. The fourth spring 26 is simultaneously sleeved on the first sleeve 27 and the slide rod 28.

[0049] like Figure 2 and Figure 4As shown, after the clamping plate 25 abuts against the column 1, when the column 1 continues to move toward the direction approaching the prefabricated seat 3, the clamping plate 25 tends to move away from the prefabricated seat 3 under the action of friction, which may cause the fourth spring 26 to be twisted and damaged. Therefore, when the fourth spring 26 is compressed, the provided sliding rod 28 can slide in the inner cavity of the first sleeve 27, thereby reducing the possibility of the fourth spring 26 being twisted and damaged.

[0050] like Figure 2 and Figure 4 As shown, two fixed blocks 29 are fixedly connected to the ground, and the two fixed blocks 29 are arranged corresponding to the two driving rods 24. The fixed blocks 29 are in the shape of a rectangular parallelepiped. A second sleeve 30 is welded and fixed to one side of the fixed block 29 close to the driving rod 24. The second sleeve 30 is arranged horizontally, and a support rod 31 is slidably arranged in the second sleeve 30 along the horizontal direction. The end of the support rod 31 away from the second sleeve 30 is welded and fixed to the driving rod 24. A positioning rod 32 is penetrated and slidably arranged on the side wall of the second sleeve 30, and a positioning groove 33 for the positioning rod 32 to be inserted is opened on the support rod 31.

[0051] like Figure 2 and Figure 4 As shown, when the driving rod 24 stops moving, the staff can insert the positioning rod 32 and insert the positioning rod 32 into the positioning hole, so as to support the driving rod 24 and reduce the possibility of the driving rod 24 breaking.

[0052] The implementation principle of the embodiment of the present application is as follows: before the staff plugs the column 1 into the insertion slot 4, the limit plate 10 abuts against the limit block 6. At this time, the second spring 11 is in a normal state, and the limit block 6 is completely located in the slide slot 5. At this time, the first spring 8 is in a compressed state. Later, when the staff needs to install the column 1 on the ground, the staff first moves the column 1 and plugs it into the insertion slot 4. During the plugging process of the column 1 and the insertion slot 4, the column 1 can press the limit plate 10 to move, and the second spring 11 is compressed. Later, when the limit plate 10 moves to a position away from the limit block 6, the limit block 6 can contact with the column 1 and be slidably connected to the side wall of the column 1; then, when the column 1 moves to the position corresponding to the limit block 6 and the limit slot 7, the elastic force of the first spring 8 can push the limit block 6 to be plugged into the limit slot 7, thereby reducing the possibility of separation between the column 1 and the prefabricated seat 3, and thus facilitating the staff to install the column 1 on the ground.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foundation pit monitoring system, comprising a column (1) installed on the ground, characterized in that: A prefabricated groove (2) is provided on the ground, a prefabricated seat (3) is fixedly arranged in the prefabricated groove (2), a plug-in groove (4) for the column (1) to be plugged in is provided in the prefabricated seat (3), a slide groove (5) is provided on the inner wall of the plug-in groove (4), a sliding limit block (6) is provided in the slide groove (5), and a limit groove (7) for the limit block (6) to be plugged in is provided on the column (1); a first spring (8) is provided in the slide groove (5), two ends of the first spring (8) are respectively fixedly connected to the limit block (6) and the inner wall of the slide groove (5), and a limit assembly (9) for limiting the limit block (6) is provided in the plug-in groove (4); The limiting assembly (9) comprises a limiting plate (10) and a second spring (11); the limiting plate (10) slides on the plug-in slot (4); the limiting plate (10) can abut against the limiting block (6); and the limiting plate (10) can abut against the column (1); two ends of the second spring (11) are respectively fixedly connected to the limiting plate (10) and the inner wall of the plug-in slot (4); A push plate (12) is slidably mounted on the prefabricated seat (3), a push rod (13) is fixedly mounted on the push plate (12), the push rod (13) is passed through and slidably mounted on the inner wall of the slide groove (5), an inclined surface (14) is disposed at one end of the push rod (13) close to the limit block (6), a slot (15) is provided on the limit block (6) for the push rod (13) to be inserted, and the inclined surface (14) can be abutted against the inner wall of one end of the slot (15) away from the column (1); The prefabricated seat (3) is provided with a third spring (16), and the two ends of the third spring (16) are respectively fixedly connected to the push plate (12) and the opposite inner wall of the prefabricated seat (3); A plurality of abutment plates (17) are slidably disposed on the prefabricated seat (3), the abutment plates (17) being capable of abutting and cooperating with the upright column (1), and a driving assembly (18) for driving the abutment plates (17) to move is disposed in the prefabricated seat (3); A storage groove (19) is provided in the prefabricated seat (3); the driving assembly (18) comprises a threaded rod (20), a threaded sleeve (21), a gear (22), a plurality of racks (23) and a plurality of driving rods (24); one end of the threaded rod (20) is fixedly connected to the limiting plate (10); the threaded sleeve (21) is rotatably arranged on the inner wall of the storage groove (19); the threaded rod (20) penetrates and slides on the inner wall of the storage groove (19); the threaded rod (20) is threadably matched with the threaded sleeve (21); and the gear (22) is fixedly arranged on the threaded sleeve (21); The plurality of racks (23) are fixedly connected to the plurality of driving rods (24) in a one-to-one correspondence; the racks (23) slide in the storage slot (19); the racks (23) are meshed with the gear (22); one end of the driving rod (24) away from the racks (23) is passed through the outside of the prefabricated seat (3), and the driving rod (24) slides on the side wall of the prefabricated seat (3); the plurality of driving rods (24) are fixedly connected to the plurality of abutment plates (17) in a one-to-one correspondence.

2. A foundation pit monitoring system according to claim 1, characterized in that: The abutment plate (17) is provided with a clamping plate (25) and a fourth spring (26), and two ends of the fourth spring (26) are respectively fixedly connected to the clamping plate (25) and the relative inner walls of the abutment plate (17); the clamping plate (25) can abut against the column (1).

3. A foundation pit monitoring system according to claim 2, characterized in that: A first sleeve (27) is fixedly arranged on the abutment plate (17), a slide rod (28) slides inside the first sleeve (27), and one end of the slide rod (28) away from the first sleeve (27) is fixedly connected to the abutment plate (25); the fourth spring (26) is simultaneously sleeved on the first sleeve (27) and the slide rod (28).

4. A foundation pit monitoring system according to claim 1, characterized in that: A fixing block (29) is fixedly arranged on the prefabricated seat (3), a second sleeve (30) is fixedly arranged on the fixing block (29), a support rod (31) is slidably arranged in the second sleeve (30), one end of the support rod (31) away from the second sleeve (30) is fixedly connected to the driving rod (24), a positioning rod (32) is slidably arranged through the side wall of the second sleeve (30), and a positioning groove (33) for the positioning rod (32) to be inserted is provided on the support rod (31).

Images