Deep foundation pit excavation deformation real-time monitoring device

Abstract

The utility model relates to the related technical field of inclination measuring devices, in particular to a deep foundation pit excavation deformation real-time monitoring device which comprises a bottom plate. A portal frame is fixedly connected to the top of the bottom plate, a through hole is formed in the bottom plate, a circular plate is arranged in the through hole, a plurality of expansion plates are arranged at the bottom of the circular plate, and the expansion plates are all slidably connected with the circular plate. Under the cooperative action of the portal frame, the through hole, the circular plate, the expansion plate, the protection mechanism and the lifting mechanism, the device supports the inner wall of the deep foundation pit while detecting the deformation condition of the inner wall of the deep foundation pit, the situation that the inner wall of the deep foundation pit collapses due to deformation is avoided, and the working efficiency of the deep foundation pit is improved. The problem that an existing deep foundation pit excavation deformation real-time monitoring device does not have the function of supporting the inner wall of a deep foundation pit, and consequently collapse easily occurs after the inner wall of the deep foundation pit deforms is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of inclinometer devices, in particular to a real-time monitoring device for the deformation of deep foundation pit excavation. Background Technique

[0002] The deformation of deep foundation pit excavation refers to the phenomenon that during the excavation of a foundation pit with a relatively large depth, due to the influence of soil reduction and the support system, the soil deforms and displaces. To avoid the deformation and collapse of the excavated foundation pit, a monitoring device is needed to monitor the foundation pit in real time. Since the deep foundation pit excavation has a certain depth, to ensure that the deformation of the foundation pit can be monitored comprehensively, the monitoring device also needs to have the same depth as the foundation pit.

[0003] The utility model patent with the publication number of CN220725040U discloses a real-time monitoring device for the deformation of deep foundation pit excavation, belonging to the technical field of inclinometer devices, to solve the problem that in the prior art, most monitoring devices are installed in the foundation pit manually, and it is troublesome and laborious to install and remove a relatively long monitoring device manually, resulting in low work efficiency. It includes a drilling hole, an inclinometer tube is arranged in the drilling hole, a moving vehicle body is arranged at the top of the drilling hole, an opening penetrating through is arranged in the moving vehicle body, and the opening is directly opposite to the drilling hole. A winding and unwinding assembly is arranged on the moving vehicle body. The winding and unwinding assembly includes a connecting rope, and a monitoring unit is installed at the bottom of the connecting rope. The monitoring unit includes a fixing rod, the fixing rod is located in the inner cavity of the drilling hole, multiple groups of infrared distance measuring sensors are installed on the outer wall of the fixing rod, and the infrared distance measuring sensors are connected to an external power supply box, a controller and a display screen through wires. Springs are installed on both sides of each group of infrared distance measuring sensors, and a fitting plate is arranged at the bottom of the spring. The distance between the inclinometer tube and the fitting plate can be detected in real time through the infrared distance measuring sensors, realizing the real-time monitoring of the deformation of the drilling hole for deep foundation pit excavation; and it is convenient for the installation and removal of the monitoring unit and the drilling hole, effectively improving the work efficiency.

[0004] However, the above patent still has deficiencies: Although the patent can monitor the deformation of the inner wall of the deep foundation pit, it does not have the function of supporting the inner wall of the deep foundation pit, resulting in the phenomenon that the inner wall of the deep foundation pit is prone to collapse after deformation. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a real-time monitoring device for the deformation of deep foundation pit excavation to solve the problem that the existing real-time monitoring device for the deformation of deep foundation pit excavation does not have the function of supporting the inner wall of the deep foundation pit, resulting in the phenomenon that the inner wall of the deep foundation pit is prone to collapse after deformation as mentioned in the above background technique.

[0006] The technical solution of the utility model is as follows:

[0007] A real-time monitoring device for the deformation of deep foundation pit excavation, comprising: a bottom plate; a gantry is fixedly connected to the top of the bottom plate, a through hole is opened inside the bottom plate, a circular plate is arranged inside the through hole, and a plurality of expansion plates are arranged at the bottom of the circular plate. The expansion plates are all slidably connected to the circular plate; a protection mechanism for controlling the expansion plates to support the inner wall of the deep foundation pit is arranged at the top of the circular plate; lifting mechanisms capable of adjusting the device according to the depth of the deep foundation pit are arranged on both sides of the circular plate.

[0008] Preferably, the protection mechanism comprises: a motor is fixedly connected to the top of the circular plate, the output end of the motor is fixedly connected with a first screw rod, and the bottom end of the first screw rod penetrates through the circular plate and extends to the outside of the circular plate; two threaded sleeves are threadedly connected to the outer surface of the first screw rod, and eight linkage rods are evenly arranged on the outer surface of each threaded sleeve. One end of each linkage rod close to the threaded sleeve is fixedly connected with a first rotating shaft, and the first rotating shafts are respectively rotatably connected to the threaded sleeves. The other end of the linkage rod far from the first rotating shaft is fixedly connected with a second rotating shaft, and both ends of the second rotating shaft are rotatably connected with fixing blocks, and the fixing blocks are respectively fixedly connected to the expansion plates; a pressure mechanism for detecting the deformation of the inner wall of the deep foundation pit is arranged on the circular plate near the motor.

[0009] Preferably, the pressure mechanism comprises: a protection box is fixedly connected to the circular plate near the motor, a pressing plate is arranged on one side of each expansion plate far from the first screw rod, four corners of each pressing plate are fixedly connected with sliding rods, and one end of each sliding rod far from the pressing plate penetrates through the expansion plate and extends to the limiting block, and the limiting block is fixedly connected with the sliding rod. The sliding rods are slidably connected to the expansion plates; pressure sensors are arranged between the pressing plates and the expansion plates, a controller with a remote transmission function is fixedly connected to the inner wall top of the protection box, and the pressure sensors are electrically connected to the controller.

[0010] Preferably, moving blocks are fixedly connected to the tops of the expansion plates, limiting sliding strips are fixedly connected to the circular plate near the moving blocks, chutes are opened in the moving blocks near the limiting sliding strips, and the moving blocks are slidably connected to the limiting sliding strips through the chutes.

[0011] Preferably, the lifting mechanism includes: lifting blocks are fixedly connected to both sides of the circular plate. A second screw rod is threadedly connected inside the lifting block. The bottom ends of the second screw rods are rotatably connected to the bottom plate. The top ends of the second screw rods penetrate through the gantry and extend to the outside of the gantry. First bevel gears are fixedly connected to the outer surfaces of the top ends of the second screw rods. A second bevel gear is meshed with each adjacent side of the two first bevel gears. A dual-axis motor is arranged between the two second bevel gears. The dual-axis motor is fixedly connected to the gantry. The output ends on both sides of the dual-axis motor are respectively fixedly connected to the second bevel gears.

[0012] Preferably, universal wheels with braking functions are arranged at the four corners of the bottom of the bottom plate. The universal wheels are fixedly connected to the bottom plate.

[0013] Preferably, springs are arranged at the four corners between the pressing plate and the expansion plate. The springs are respectively sleeved on the outer surfaces of the sliding rods.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] First, through the combined action of the gantry, through holes, circular plate, expansion plate, protection mechanism and lifting mechanism of the present utility model, the device can detect the deformation of the inner wall of the deep foundation pit while supporting the inner wall of the deep foundation pit, avoiding the collapse of the inner wall of the deep foundation pit caused by deformation, and solving the problem that the existing real-time monitoring device for the deformation of the deep foundation pit excavation does not have the function of supporting the inner wall of the deep foundation pit, resulting in the phenomenon that the inner wall of the deep foundation pit is prone to collapse after deformation.

[0016] Second, through the combined action of the gantry, through holes, circular plate, expansion plate, protection mechanism and lifting mechanism of the present utility model, the device can be adjusted according to the depth of the deep foundation pit, so as to install the device on the inner wall of the deep foundation pit, solving the problem of potential safety hazards in the installation of the monitoring device by workers inside the deep foundation pit. At the same time, it also reduces the labor intensity of workers and improves the installation efficiency of the monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a real-time monitoring device for the deformation of the deep foundation pit excavation of the present utility model;

[0018] Figure 2 is a side sectional structural schematic diagram of a real-time monitoring device for the deformation of the deep foundation pit excavation of the present utility model;

[0019] Figure 3 For the present utility model Figure 2 is an enlarged structural schematic diagram at position A;

[0020] Figure 4 For the present utility model Figure 2 Schematic enlarged structure view at position B in

[0021] Figure 5 Schematic structure view of the protection mechanism of the present utility model;

[0022] Figure 6 For the present utility model Figure 5 Schematic enlarged structure view at position C in

[0023] Figure 7 Schematic structure view of the lifting mechanism of the present utility model.

[0024] In the figure:

[0025] 1. Base plate; 2. Gantry; 3. Through hole; 4. Circular plate; 5. Expansion plate; 6. Protection mechanism; 7. Lifting mechanism; 8. Motor; 9. First screw; 10. Threaded sleeve; 11. Linking rod; 12. First rotating shaft; 13. Second rotating shaft; 14. Fixed block; 15. Pressure mechanism; 16. Protection box; 17. Pressing plate; 18. Slide bar; 19. Pressure sensor; 20. Controller; 21. Moving block; 22. Limit slide bar; 23. Slide groove; 24. Lifting block; 25. Second screw; 26. First bevel gear; 27. Second bevel gear; 28. Biaxial motor; 29. Universal wheel; 30. Spring; 31. Limit block. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 7 , the present utility model details the above technical solutions through the following embodiments:

[0028] A real-time monitoring device for the deformation of deep foundation pit excavation, comprising: a bottom plate 1; a gantry 2 is fixedly connected to the top of the bottom plate 1, a through hole 3 is opened inside the bottom plate 1, a circular plate 4 is arranged inside the through hole 3, and a plurality of expansion plates 5 are arranged at the bottom of the circular plate 4. The expansion plates 5 are all slidably connected to the circular plate 4; a protection mechanism 6 for controlling the expansion plates 5 to support the inner wall of the deep foundation pit is arranged on the top of the circular plate 4; lifting mechanisms 7 for adjusting the device according to the depth of the deep foundation pit are arranged on both sides of the circular plate 4. The user controls the circular plate 4 to lift according to the depth of the deep foundation pit through the lifting mechanism 7, and then supports and monitors the inner wall of the deep foundation pit through the protection mechanism 6, so that while the device detects the deformation of the inner wall of the deep foundation pit, it supports the inner wall of the deep foundation pit, avoiding the collapse of the inner wall of the deep foundation pit caused by deformation, and solving the problem that the existing real-time monitoring device for the deformation of deep foundation pit excavation does not have the function of supporting the inner wall of the deep foundation pit, resulting in the phenomenon of easy collapse after the deformation of the inner wall of the deep foundation pit.

[0029] As Figures 2 to 5 shown, the protection mechanism 6 includes: a motor 8 is fixedly connected to the top of the circular plate 4, the output end of the motor 8 is fixedly connected to a first screw rod 9, and the bottom end of the first screw rod 9 penetrates through the circular plate 4 and extends to the outside of the circular plate 4; two threaded sleeves 10 are threadedly connected to the outer surface of the first screw rod 9, and eight linkage rods 11 are evenly arranged on the outer surface of the threaded sleeve 10. One end of each linkage rod 11 close to the threaded sleeve 10 is fixedly connected to a first rotating shaft 12, and the first rotating shafts 12 are respectively rotatably connected to the threaded sleeve 10. The other end of the linkage rod 11 far from the first rotating shaft 12 is fixedly connected to a second rotating shaft 13, and both ends of the outer surface of the second rotating shaft 13 are rotatably connected to fixing blocks 14, and the fixing blocks 14 are respectively fixedly connected to the expansion plates 5; a pressure mechanism 15 for detecting the deformation of the inner wall of the deep foundation pit is arranged near the motor 8 on the circular plate 4. Start the motor 8, the output end of the motor 8 drives the first screw rod 9 to rotate, while the first screw rod 9 rotates, it drives the threaded sleeve 10 on its surface to move downward. While the threaded sleeve 10 moves downward, it squeezes one end of the linkage rod 11 through the first rotating shaft 12, so that the other end of the linkage rod 11 pushes the second rotating shaft 13, the second rotating shaft 13 pushes the fixing block 14, the fixing block 14 drives the expansion plate 5, and the expansion plate 5 slides towards the inner wall of the deep foundation pit through the cooperation of the circular plate 4.

[0030] As Figure 2 and Figure 5As shown in the figure, the pressure mechanism 15 includes: a protective box 16 is fixedly connected to the circular plate 4 near the motor 8. Pressure plates 17 are arranged on the surfaces of the expansion plates 5 away from the first screw rod 9. Slide bars 18 are fixedly connected to the four corners of the pressure plates 17. The ends of the slide bars 18 away from the pressure plates 17 respectively penetrate through the expansion plates 5 and extend to the limit blocks 31. The limit blocks 31 are fixedly connected to the slide bars 18, and the slide bars 18 are slidably connected to the expansion plates 5. Pressure sensors 19 are arranged between the pressure plates 17 and the expansion plates 5. A controller 20 with a remote transmission function is fixedly connected to the inner wall top of the protective box 16. The pressure sensors 19 are electrically connected to the controller 20. When the expansion plates 5 slide towards the inner wall of the deep foundation pit, the limit blocks 31 and the slide bars 18 drive the pressure plates 17 to move towards the inner wall of the deep foundation pit, so that the pressure plates 17 are attached to the inner wall of the deep foundation pit. When the inner wall of the deep foundation pit deforms, the inner wall of the deep foundation pit squeezes the pressure plates 17. The pressure plates 17 move towards the expansion plates 5 through the cooperation of the slide bars 18 and simultaneously squeeze the pressure sensors 19. The pressure sensors 19 remotely transmit the data to a computer through the controller 20, and the purpose of monitoring the deformation of the deep foundation pit can be achieved.

[0031] As Figure 3 and Figure 5 shown in the figure, moving blocks 21 are fixedly connected to the tops of the expansion plates 5. Limit slide bars 22 are fixedly connected to the circular plate 4 near the moving blocks 21. Chute grooves 23 are opened at the positions of the moving blocks 21 close to the limit slide bars 22. The moving blocks 21 are slidably connected to the limit slide bars 22 through the chute grooves 23. When the expansion plates 5 move, the moving blocks 21 are driven. The moving blocks 21 horizontally move on the surfaces of the limit slide bars 22 through the chute grooves 23 on both sides, and the moving blocks 21 can be limited and slide.

[0032] As Figure 2 and Figure 7As shown in the figure, the lifting mechanism 7 includes: lifting blocks 24 are fixedly connected to both sides of the circular plate 4. The interior of the lifting block 24 is threadedly connected with a second screw rod 25. The bottom ends of the second screw rods 25 are rotatably connected to the bottom plate 1. The top ends of the second screw rods 25 penetrate through the gantry 2 and extend to the outside of the gantry 2. The outer surfaces of the top ends of the second screw rods 25 are fixedly connected with first bevel gears 26. A second bevel gear 27 is meshed with one side of each of the two first bevel gears 26. A double-shaft motor 28 is arranged between the two second bevel gears 27. The double-shaft motor 28 is fixedly connected to the gantry 2. The output ends on both sides of the double-shaft motor 28 are respectively fixedly connected to the second bevel gears 27. When the double-shaft motor 28 is started, the output end of the double-shaft motor 28 drives the second bevel gear 27, the second bevel gear 27 drives the first bevel gear 26, and the first bevel gears 26 respectively drive the second screw rods 25 to rotate. While the second screw rods 25 rotate, they drive the lifting blocks 24, and the lifting blocks 24 drive the circular plate 4. Thus, the device can be adjusted according to the depth of the deep foundation pit, and the device can be installed on the inner wall of the deep foundation pit, solving the problem of potential safety hazards when installing the monitoring device manually inside the deep foundation pit. At the same time, it also reduces the labor intensity of workers and improves the installation efficiency of the monitoring device.

[0033] As Figure 1 and Figure 2 shown in the figure, universal wheels 29 with braking functions are arranged at the four corners of the bottom of the bottom plate 1. The universal wheels 29 are fixedly connected to the bottom plate 1, which facilitates the user to move and fix the device.

[0034] As Figure 6 shown in the figure, springs 30 are arranged at the four corners between the pressing plate 17 and the expansion plate 5. The springs 30 are respectively sleeved on the outer surfaces of the sliding rods 18, which can apply an outward thrust to the pressing plate 17.

[0035] Working principle: Start the motor 8. The output end of the motor 8 drives the first screw rod 9 to rotate. While the first screw rod 9 rotates, it drives the thread sleeve 10 on its surface to move downward. While the thread sleeve 10 moves downward, it squeezes one end of the linkage rod 11 through the first rotating shaft 12, causing the other end of the linkage rod 11 to push the second rotating shaft 13. The second rotating shaft 13 pushes the fixed block 14, and the fixed block 14 drives the expansion plate 5. The expansion plate 5 slides towards the inner wall of the deep foundation pit through the cooperation of the moving block 21, the sliding groove 23 and the limiting slide bar 22. While the expansion plate 5 slides towards the inner wall of the deep foundation pit, it drives the pressing plate 17 to move towards the inner wall of the deep foundation pit through the limiting block 31 and the slide bar 18, so that the pressing plate 17 fits with the inner wall of the deep foundation pit. When the inner wall of the deep foundation pit deforms, the inner wall of the deep foundation pit squeezes the pressing plate 17. The pressing plate 17 moves towards the direction of the expansion plate 5 through the cooperation of the slide bar 18 and squeezes the pressure sensor 19 at the same time. The pressure sensor 19 transmits the data to the computer remotely through the controller 20, and the purpose of monitoring the deformation of the deep foundation pit can be achieved. While the device detects the deformation of the inner wall of the deep foundation pit, it supports the inner wall of the deep foundation pit, avoiding the situation that the inner wall of the deep foundation pit collapses due to deformation, and solving the problem that the existing real-time monitoring device for the deformation of the deep foundation pit excavation does not have the function of supporting the inner wall of the deep foundation pit, resulting in the phenomenon that the inner wall of the deep foundation pit is prone to collapse after deformation.

[0036] Start the double-shaft motor 28. The output end of the double-shaft motor 28 drives the second bevel gear 27, and the second bevel gear 27 drives the first bevel gear 26. The first bevel gear 26 drives the second screw rod 25 to rotate respectively. While the second screw rod 25 rotates, it drives the lifting block 24, and the lifting block 24 drives the circular plate 4, so that the device can adjust the device according to the depth of the deep foundation pit, and then install the device on the inner wall of the deep foundation pit, solving the problem that there are safety hazards when installing the monitoring device manually inside the deep foundation pit. At the same time, it also reduces the labor intensity of workers and improves the installation efficiency of the monitoring device.

[0037] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A real-time monitoring device for deep foundation pit excavation deformation, comprising: Bottom plate (1); The invention is characterized in that a gantry (2) is fixedly connected to the top of the base plate (1), a through hole (3) is opened inside the base plate (1), a circular plate (4) is arranged inside the through hole (3), a plurality of expansion plates (5) are arranged at the bottom of the circular plate (4), and the expansion plates (5) are all slidably connected to the circular plate (4); A protective mechanism (6) is provided on the top of the circular plate (4) for controlling the expansion plate (5) to support the inner wall of the deep foundation pit; Lifting mechanisms (7) are provided on both sides of the circular plate (4) and can adjust the device according to the depth of the deep foundation pit.

2. A real-time monitoring device for deep foundation pit excavation deformation according to claim 1, characterized in that: The protection mechanism (6) comprises: A motor (8) is fixedly connected to the top of the circular plate (4), and an output end of the motor (8) is fixedly connected to a first screw rod (9), and a bottom end of the first screw rod (9) passes through the circular plate (4) and extends to the outside of the circular plate (4); The outer surface of the first screw rod (9) is threadedly connected with two threaded sleeves (10), and the outer surface of the threaded sleeve (10) is evenly provided with eight linkage rods (11), and the ends of the linkage rods (11) close to the threaded sleeve (10) are fixedly connected with a first rotating shaft (12), and the first rotating shaft (12) is rotatably connected to the threaded sleeve (10), and the ends of the linkage rods (11) away from the first rotating shaft (12) are fixedly connected with a second rotating shaft (13), and the outer surfaces of both ends of the second rotating shaft (13) are rotatably connected with fixed blocks (14), and the fixed blocks (14) are fixedly connected to the expansion plates (5); The circular plate (4) is provided with a pressure mechanism (15) near the motor (8) for detecting the deformation of the inner wall of the deep foundation pit.

3. A real-time monitoring device for deep foundation pit excavation deformation according to claim 2, characterized in that: The pressure mechanism (15) comprises: The circular plate (4) is fixedly connected with a protection box (16) near the motor (8), and a pressure plate (17) is provided on the side of the expansion plate (5) away from the first screw rod (9). The four corners of the pressure plate (17) are fixedly connected with a sliding rod (18). The end of the sliding rod (18) away from the pressure plate (17) passes through the expansion plate (5) and extends to the limit block (31). The limit block (31) is fixedly connected to the sliding rod (18), and the sliding rod (18) is slidably connected to the expansion plate (5); A pressure sensor (19) is provided between the pressure plate (17) and the expansion plate (5), and a controller (20) with a remote transmission function is fixedly connected to the top of the inner wall of the protection box (16), and the pressure sensor (19) is electrically connected to the controller (20).

4. A real-time monitoring device for deep foundation pit excavation deformation according to claim 1, characterized in that: The top of the expansion plate (5) is fixedly connected to a moving block (21), the circular plate (4) is fixedly connected to a limiting slide bar (22) near the moving block (21), and a sliding groove (23) is provided on the moving block (21) near the limiting slide bar (22), and the moving block (21) is slidably connected to the limiting slide bar (22) via the sliding groove (23).

5. The real-time monitoring device for deep foundation pit excavation deformation according to claim 1, characterized in that: The lifting mechanism (7) comprises: Both sides of the circular plate (4) are fixedly connected with lifting blocks (24), the internal threads of the lifting blocks (24) are connected with second screw rods (25), the bottom ends of the second screw rods (25) are rotatably connected to the bottom plate (1), and the top ends of the second screw rods (25) penetrate the gantry (2) and extend to the outside of the gantry (2); The top outer surface of each of the second screw rods (25) is fixedly connected to a first bevel gear (26); adjacent sides of the two first bevel gears (26) are meshed with a second bevel gear (27); a double-axis motor (28) is arranged between the two second bevel gears (27); the double-axis motor (28) is fixedly connected to the gantry (2); and output ends on both sides of the double-axis motor (28) are respectively fixedly connected to the second bevel gears (27).

6. A real-time monitoring device for deep foundation pit excavation deformation according to claim 1, characterized in that: Universal wheels (29) with a braking function are arranged at the four bottom corners of the bottom plate (1), and the universal wheels (29) are fixedly connected to the bottom plate (1).

7. A real-time monitoring device for deep foundation pit excavation deformation according to claim 3, characterized in that: Springs (30) are provided at the four corners between the pressure plate (17) and the expansion plate (5), and the springs (30) are respectively sleeved on the outer surface of the slide rod (18).

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