Foundation pit horizontal displacement monitoring device

Abstract

The utility model discloses a foundation pit horizontal displacement monitoring device which comprises a base, the top of the base is fixedly connected with a vertical rod, the vertical rod is fixedly connected with a plurality of first device boxes, the two sides of each first device box are fixedly connected with first hollow square cylinders, the interiors of the first hollow square cylinders are movably connected with first movable blocks, and the second hollow square cylinders are fixedly connected with second movable blocks. A displacement monitoring mechanism is arranged on the side, away from the first device box, of the first movable block, and a driving mechanism used for driving the displacement monitoring mechanism to move in the length direction of the first hollow square cylinder is arranged on the first device box. When the device needs to be installed in a foundation pit to be detected, the displacement monitoring mechanism can be driven by the driving mechanism to contract towards the interior of the first hollow square cylinder so as to reduce the size of the device, the device can be easily placed in the foundation pit, a single worker can conveniently install the monitoring device in the foundation pit, labor cost input is reduced, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit monitoring, in particular to a foundation pit horizontal displacement monitoring device. Background Art

[0002] In building construction, it is necessary to dig a foundation pit on the ground. As the soil in the foundation pit is excavated, the soil on the side walls of the foundation pit tends to move into the pit. Horizontal displacement refers to the displacement of the top of the side wall of the foundation pit in the horizontal direction perpendicular to the foundation pit. During construction, it is necessary to detect the horizontal deformation of the soil to determine the safety and stability of the support structure and reduce safety hazards.

[0003] For example, the Chinese patent with application number: 202320272373.9 discloses a deep foundation pit horizontal displacement monitoring device, including a base and a hollow plate fixed on the top of the base, the bottom of the base is fixedly connected with a ground nail, the side of the hollow plate is fixed with a power supply and multiple fixed pipes, the outer thread of the fixed pipe is connected with a limited thread ring, the limited thread ring is pasted with a power connection ring on the side close to the hollow plate, a slider close to the inner wall is provided in the fixed pipe, a strip hole is opened in the axial direction at the bottom of the fixed pipe, and a power connection plate passing through the strip hole is fixedly connected to the bottom of the slider. The entire monitoring process does not require manual timing measurement, saving manpower, and the material cost is low and not easy to damage.

[0004] When installing the above-mentioned monitoring device, it is necessary to manually press the roller along the direction of the insertion rod to reduce the size of the device before the monitoring device can be installed in the foundation pit. However, there are usually multiple rollers on the monitoring device, which makes it difficult for a single worker to complete the installation operation when installing the detection device. Usually, the cooperation of multiple workers is required to complete the installation. The monitoring device cannot be installed in the foundation pit conveniently, which is time-consuming and labor-intensive. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a foundation pit horizontal displacement monitoring device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a foundation pit horizontal displacement monitoring device, comprising a base, the top of the base is fixedly connected to a vertical rod, the vertical rod is fixedly connected to a plurality of device boxes, both sides of the device box are fixedly connected to a hollow square tube, the interior of the hollow square tube is movably connected to a movable block, a displacement monitoring mechanism is arranged on the side of the movable block away from the device box, the device box is provided with a driving mechanism for driving the displacement monitoring mechanism to move along the length direction of the hollow square tube, the driving mechanism comprises a double-axis motor fixedly installed inside the device box, both output ends of the double-axis motor are fixedly connected to driving screws, the outer surfaces of the two driving screws are threadedly connected to threaded barrels, and one end of the threaded barrel away from the double-axis motor is fixedly connected to the movable block;

[0007] In actual application, when the device needs to be installed in the foundation pit to be inspected, the displacement monitoring mechanism can be driven by the driving mechanism to shrink toward the inside of the hollow square tube to reduce the volume of the device, so that the device can be easily placed in the foundation pit, making it convenient for a single worker to install the monitoring device in the foundation pit, reducing labor costs and saving time and effort.

[0008] As a further description of the above technical solution:

[0009] The thread directions of the two driving screws are arranged in opposite directions.

[0010] As a further description of the above technical solution:

[0011] The displacement monitoring mechanism comprises a second hollow square tube fixedly mounted on a first movable block, wherein the interior of the second hollow square tube is movably connected to a second movable block, and one side of the second movable block is fixedly connected to a cross bar.

[0012] As a further description of the above technical solution:

[0013] One end of the cross bar away from the movable block 2 is fixedly connected to a support plate, the other side of the support plate is fixedly connected to a pressure sensor, and the other side of the pressure sensor is fixedly connected to an abutment plate.

[0014] As a further description of the above technical solution:

[0015] A spring is arranged between the support plate and two opposite sides of the hollow square tube and on the outside of the cross bar.

[0016] As a further description of the above technical solution:

[0017] A signal receiver is arranged on one side of the movable block 1, and a displacement sensor is arranged on the side of the movable block 2 opposite to the signal receiver.

[0018] As a further description of the above technical solution:

[0019] The top end of the vertical rod is fixedly connected with a handle, and a device box 2 is fixedly installed on the handle. A PLC controller and a battery are arranged inside the device box 2, and a control button is arranged on the top of the device box 2.

[0020] As a further description of the above technical solution:

[0021] A plurality of ground nails are fixedly connected to the bottom of the base.

[0022] The utility model has the following beneficial effects:

[0023] 1. Compared with the prior art, when the foundation pit horizontal displacement monitoring device needs to be installed in the foundation pit to be detected, the displacement monitoring mechanism can be driven by the driving mechanism to shrink toward the inside of the hollow square tube to reduce the volume of the device, so that the device can be easily placed in the foundation pit, which is convenient for a single worker to install the monitoring device in the foundation pit, reducing labor cost investment, saving time and effort.

[0024] 2. Compared with the prior art, the foundation pit horizontal displacement monitoring device, after being fixedly installed in the foundation pit, drives the abutment plate in the displacement monitoring mechanism to abut against the inner wall of the foundation pit through the driving mechanism, and monitors the abutment force through the pressure sensor. When the abutment force between the abutment plate and the foundation pit reaches an appropriate value, the dual-axis motor is turned off through the PLC controller, thereby adjusting the abutment force between the abutment plate and the foundation pit to an appropriate value, thereby avoiding excessive abutment force that causes the abutment plate to press the inner wall of the foundation pit into a concave pit, thereby affecting the accuracy of subsequent monitoring values. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the overall structure of a foundation pit horizontal displacement monitoring device proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of a device box 1 and a hollow square tube 1 of a foundation pit horizontal displacement monitoring device proposed by the utility model;

[0027] Figure 3 A schematic diagram of a driving mechanism of a foundation pit horizontal displacement monitoring device proposed by the utility model;

[0028] Figure 4 A schematic diagram of a displacement monitoring mechanism of a foundation pit horizontal displacement monitoring device proposed by the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of a crossbar and a pressure sensor of a foundation pit horizontal displacement monitoring device proposed by the utility model;

[0030] Figure 6 This is a schematic diagram of the internal structure of a device box 2 of a foundation pit horizontal displacement monitoring device proposed by the utility model;

[0031] Figure 7 The utility model is a schematic diagram of the use status of a foundation pit horizontal displacement monitoring device proposed by the utility model.

[0032] Legend:

[0033] 1. Base; 2. Vertical rod; 3. Device box 1; 4. Hollow square tube 1; 5. Movable block 1; 6. Double-axis motor; 7. Driving screw; 8. Threaded tube; 9. Hollow square tube 2; 10. Movable block 2; 11. Crossbar; 12. Support plate; 13. Pressure sensor; 14. Abutment plate; 15. Spring; 16. Handle; 17. Device box 2; 18. PLC controller; 19. Battery; 20. Control button; 21. Ground nail; 22. Signal receiver; 23. Displacement sensor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Reference Figure 1-7 The utility model provides a foundation pit horizontal displacement monitoring device: comprising a base 1, a plurality of ground nails 21 are fixedly connected to the bottom of the base 1, a vertical rod 2 is fixedly connected to the top of the base 1, a plurality of device boxes 3 are fixedly connected to the vertical rod 2, both sides of the device box 3 are fixedly connected to a hollow square tube 4, the interior of the hollow square tube 4 is movably connected to a movable block 5, a displacement monitoring mechanism is arranged on the side of the movable block 5 away from the device box 3, and a driving mechanism for driving the displacement monitoring mechanism to move along the length direction of the hollow square tube 4 is arranged on the device box 3, the driving mechanism comprises a double-axis motor 6 fixedly installed inside the device box 3, two output ends of the double-axis motor 6 are fixedly connected to driving screws 7, the thread directions of the two driving screws 7 are arranged in opposite directions, the outer surfaces of the two driving screws 7 are threadedly connected to threaded barrels 8, and the end of the threaded barrel 8 away from the double-axis motor 6 is fixedly connected to the movable block 5;

[0036] When the device needs to be installed in the foundation pit to be inspected, the dual-axis motor 6 can be started first to drive the output end of the dual-axis motor 6 to rotate clockwise, thereby driving the two driving screws 7 on the output end of the dual-axis motor 6 to rotate, and under the limiting effect of the hollow square cylinder 4 on the movable block 5, the threaded cylinder 8 and the movable block 5 move to one side of the dual-axis motor 6, thereby driving the displacement monitoring mechanism to shrink toward the inside of the hollow square cylinder 4 to reduce the size of the device, so that the device can be easily placed in the foundation pit, making it convenient for a single worker to install the monitoring device in the foundation pit, reducing labor cost investment, saving time and effort.

[0037] The top of the vertical rod 2 is fixedly connected with a handle 16 , on which a device box 17 is fixedly mounted. A PLC controller 18 and a battery 19 are arranged inside the device box 17 , and a control button 20 is arranged on the top of the device box 17 .

[0038] The displacement monitoring mechanism includes a hollow square cylinder 29 fixedly mounted on the movable block 15, the interior of the hollow square cylinder 29 is movably connected to the movable block 210, a cross bar 11 is fixedly connected to one side of the movable block 10, an end of the cross bar 11 away from the movable block 10 is fixedly connected to a support plate 12, the other side of the support plate 12 is fixedly connected to a pressure sensor 13, the other side of the pressure sensor 13 is fixedly connected to an abutment plate 14, a spring 15 is arranged between the support plate 12 and the opposite side of the hollow square cylinder 29 and on the outside of the cross bar 11, a signal receiver 22 is arranged on one side of the movable block 5, and a displacement sensor 23 is arranged on the side of the movable block 10 opposite to the signal receiver 22;

[0039] After the monitoring device is fixedly installed in the foundation pit, the abutment plate 14 in the displacement monitoring mechanism is driven to abut against the inner wall of the foundation pit through the driving mechanism, and the abutment force is monitored by the pressure sensor 13. When the abutment force between the abutment plate 14 and the foundation pit reaches an appropriate value, the dual-axis motor 6 is turned off by the PLC controller 18, so as to adjust the abutment force between the abutment plate 14 and the foundation pit to an appropriate value, thereby avoiding excessive abutment force that causes the abutment plate 14 to press the inner wall of the foundation pit into a concave pit, thereby affecting the accuracy of subsequent monitoring values.

[0040] Working principle: When in use, first start the double-axis motor 6 through the control button 20, drive the output end of the double-axis motor 6 to rotate clockwise, and then drive the two driving screws 7 on the output end of the double-axis motor 6 to rotate. Under the limiting effect of the hollow square cylinder 4 on the movable block 5, the threaded cylinder 8 and the movable block 5 move to one side of the double-axis motor 6, thereby driving the displacement monitoring mechanism to shrink toward the inside of the hollow square cylinder 4 to reduce the volume of the device, so that the device can be easily placed in the foundation pit;

[0041] When the displacement monitoring mechanism is retracted to a suitable position, the worker holds the handle 16 to place the base 1 at the bottom of the foundation pit and keep it level with the bottom of the foundation pit, and inserts the ground nail 21 at the bottom of the base 1 into the foundation pit ground to fix the device in the foundation pit. Then, the dual-axis motor 6 is started by the control button 20 to rotate the output end of the dual-axis motor 6 counterclockwise, indirectly driving the displacement monitoring mechanism to move to the outside of the hollow square tube 4. When the abutment plate 14 in the displacement monitoring mechanism abuts against the inner wall of the foundation pit, the driving mechanism continues to drive the displacement detection mechanism to move to the side close to the inner wall of the foundation pit, so that The distance between the abutment plate 14 and the hollow square tube 9 is reduced, so that the spring 15 is compressed and stores energy, and the abutment force between the abutment plate 14 and the inner wall of the foundation pit can be monitored by the setting of the pressure sensor 13, and the monitored data is transmitted to the PLC controller 18. When the abutment force between the abutment plate 14 and the foundation pit reaches an appropriate value, the double-axis motor 6 is turned off by the PLC controller 18, so as to adjust the abutment force between the abutment plate 14 and the foundation pit to an appropriate value, so as to avoid the abutment force being too large, causing the abutment plate 14 to press the inner wall of the foundation pit into a concave pit, thereby affecting the accuracy of the subsequent monitoring values;

[0042] When the foundation pit undergoes horizontal displacement, the abutment plate 14 abutting against the inner wall of the foundation pit moves along with the horizontal displacement of the foundation pit. At this time, the movement of the abutment plate 14 synchronously drives the cross bar 11 and the movable block 2 10 to move, thereby driving the displacement sensor 23 to move, and the displacement distance is detected by the displacement sensor 23.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foundation pit horizontal displacement monitoring device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a vertical rod (2), and a plurality of device boxes (3) are fixedly connected to the vertical rod (2). Both sides of the device box (3) are fixedly connected to a hollow square tube (4), and a movable block (5) is movably connected inside the hollow square tube (4). A displacement monitoring mechanism is provided on the side of the movable block (5) away from the device box (3). The device box (3) is provided with a driving mechanism for driving the displacement monitoring mechanism to move along the length direction of the hollow square tube (4), and the driving mechanism comprises a double-axis motor (6) fixedly installed inside the device box (3), and two output ends of the double-axis motor (6) are fixedly connected to driving screws (7), and the outer surfaces of the two driving screws (7) are threadedly connected to threaded tubes (8), and the end of the threaded tube (8) away from the double-axis motor (6) is fixedly connected to the movable block (5).

2. A foundation pit horizontal displacement monitoring device according to claim 1, characterized in that: The thread directions of the two driving screw rods (7) are arranged in opposite directions.

3. The device for monitoring horizontal displacement of a foundation pit according to claim 1, characterized in that: The displacement monitoring mechanism comprises a second hollow square cylinder (9) fixedly mounted on a first movable block (5), the interior of the second hollow square cylinder (9) being movably connected to a second movable block (10), and one side of the second movable block (10) being fixedly connected to a crossbar (11).

4. A foundation pit horizontal displacement monitoring device according to claim 3, characterized in that: One end of the cross bar (11) away from the movable block 2 (10) is fixedly connected to a support plate (12), the other side of the support plate (12) is fixedly connected to a pressure sensor (13), and the other side of the pressure sensor (13) is fixedly connected to an abutment plate (14).

5. The device for monitoring horizontal displacement of a foundation pit according to claim 4, characterized in that: A spring (15) is provided between the support plate (12) and the opposite side of the second hollow square tube (9) and on the outside of the cross bar (11).

6. The device for monitoring horizontal displacement of a foundation pit according to claim 5, characterized in that: A signal receiver (22) is provided on one side of the movable block 1 (5), and a displacement sensor (23) is provided on the side of the movable block 2 (10) opposite to the signal receiver (22).

7. The device for monitoring horizontal displacement of a foundation pit according to claim 1, characterized in that: The top end of the vertical rod (2) is fixedly connected to a handle (16), a device box (17) is fixedly mounted on the handle (16), a PLC controller (18) and a battery (19) are arranged inside the device box (17), and a control button (20) is arranged on the top of the device box (17).

8. The device for monitoring horizontal displacement of a foundation pit according to claim 1, characterized in that: A plurality of ground nails (21) are fixedly connected to the bottom of the base (1).

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