A foundation pit deformation monitoring device

Abstract

The present invention belongs to the technical field of foundation pit construction, and specifically relates to a foundation pit deformation monitoring device, including a fixed seat, a movable part, a connecting rod, a base and an alarm mechanism. The movable part is slidably connected to the fixed seat, one end of the connecting rod is fixedly connected to the base, and the other end is hinged to the movable part. A trigger mechanism 1 is provided on the fixed seat in the path where the movable part slides toward the base. The trigger mechanism 1 is electrically connected to the alarm mechanism. When the base drives the connecting rod to deflect, the connecting rod rotates around the movable part and can drive the movable part to move along the fixed seat, thereby amplifying the moving stroke of the movable part and triggering the alarm faster and more timely. While expanding the monitoring distribution range, the foundation pit deformation can be better monitored, the monitoring sensitivity is improved, and engineering personnel can obtain foundation pit deformation signals more timely.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit construction, and in particular relates to a foundation pit deformation monitoring device. Background Art

[0002] It is often necessary to dig foundation pits in construction projects. During or after the excavation of the foundation pit, the surrounding soil will exert pressure on the foundation pit position, which can easily cause deformation of the foundation pit. The engineering personnel have to repair or re-dig the foundation pit, which increases the amount of work, prolongs the construction period, and may even cause accidents. Therefore, during the construction process, it is often necessary to monitor and warn whether the foundation pit is deformed. The deformation of the foundation pit generally includes settlement and the collapse of the side supports inside the foundation pit. For the monitoring of foundation pit settlement, the current existing technology generally uses a vertically moving slide bar in conjunction with an alarm mechanism. When the bottom of the foundation pit settles, the slide bar moves downward with the settlement and triggers the alarm mechanism. For example, invention patent CN202121854291.2 is an online monitoring device for foundation pit slope settlement. In this type of monitoring device, if the lower end of the slide bar is directly in contact with the bottom of the foundation pit, the area that can be monitored is only at the lower end of the slide bar, and the monitoring range is limited. If a base is set at the lower end of the slide bar and the base is in contact with the bottom of the foundation pit, although the monitoring distribution range can be increased, the settlement of the foundation pit bottom includes not only vertical settlement, but also inclined settlement or partial settlement. When the bottom of the foundation pit has a relatively regular vertical settlement, the base can drive the slide bar to descend vertically and trigger the alarm in a timely and effective manner. When the bottom of the foundation pit has an inclined settlement or the settlement amplitudes on both sides are different, the base may support one end on the non-settled area during settlement, causing the slide bar to be unable to descend or to descend only a small amount, resulting in the inability to trigger the alarm normally. The monitoring sensitivity needs to be further improved. Summary of the Invention

[0003] The technical problem to be solved by the invention is to provide a foundation pit deformation monitoring device with higher sensitivity.

[0004] The content of the present invention includes a fixed seat, a moving part, a connecting rod, a base and an alarm mechanism. The moving part is slidably connected to the fixed seat, one end of the connecting rod is fixedly connected to the base, and the other end is hinged to the moving part. A trigger mechanism 1 is provided on the fixed seat in the path where the moving part slides toward the base. The trigger mechanism 1 is electrically connected to the alarm mechanism. There is an angle between the axis of rotation of the connecting rod around the moving part and the straight line where the moving part slides. When the base drives the connecting rod to deflect, the connecting rod rotates around the moving part and drives the moving part to move along the fixed seat.

[0005] Furthermore, two connecting rods are provided, one end of each of the two connecting rods is fixed to the base, and the other ends of the two connecting rods are inclined and hinged to the moving part.

[0006] Furthermore, the vertical projection of the moving part on the base is located in the middle of the base.

[0007] Furthermore, two or more support columns are arranged at intervals on the bottom of the base.

[0008] Furthermore, the two or more support columns are all adjustable telescopic structures.

[0009] Furthermore, the connecting rod is hinged to the moving part through a ball head.

[0010] Furthermore, it also includes a trigger mechanism 2 and an offset plate facing the inner side of the foundation pit, the offset plate is vertically arranged on the base, the trigger mechanism 2 is electrically connected to the alarm mechanism, and the trigger mechanism 2 is arranged on the base and facing the offset plate, and the offset plate can move or rotate on the base under the action of external force to contact the trigger mechanism 2.

[0011] Furthermore, the alarm mechanism includes alarm 1 and alarm 2, the trigger mechanism 1 is correspondingly connected to the alarm 1, and the trigger mechanism 2 is correspondingly connected to the alarm 2.

[0012] Furthermore, the alarm 1 and the alarm 2 are buzzers or signal lights.

[0013] Furthermore, it further includes a bracket, and the fixing seat is arranged on the bracket.

[0014] The beneficial effect of the present invention is that when the foundation pit settles in an inclined manner or the settlement degrees on both sides of the partial area covered by the base are different, the base is tilted due to the settlement of the corresponding area, and drives the connecting rod to deflect downward around the inclined area. Since the connecting rod is rotationally connected to the moving part, the downward deflection of the connecting rod can drive the moving part to move downward through the rotating connection. Therefore, when the foundation pit settles, whether it is only the inclined settlement or the settlement of a partial area that causes the tilt amplitude of the base, or the tilt amplitude of the base during the vertical settlement process, it can be converted into the downward movement of the moving part through the rotating connection of the connecting rod, thereby amplifying the moving stroke of the moving part and triggering the alarm faster and more timely. Therefore, the present invention can better monitor the deformation of the foundation pit while expanding the monitoring distribution range, improve the monitoring sensitivity, and enable engineering personnel to obtain the foundation pit deformation signal more timely. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 It is a structural schematic diagram of the present invention.

[0016] In the figure, 1-bracket; 2-fixed seat; 3-moving part; 4-connecting rod; 5-base; 6-trigger mechanism 1; 7-alarm 1; 8-support column; 9-offset plate; 10-trigger mechanism 2; 11-alarm 2. DETAILED DESCRIPTION

[0017] As attached Figure 1 As shown, the present invention includes a fixed base 2, a moving member 3, a connecting rod 4, a base 5 and an alarm mechanism. The moving member 3 is slidably connected to the fixed base 2. The moving member 3 can be linearly moved in a corresponding direction on the fixed base 2 by an external force. One end of the connecting rod 4 is fixedly connected to the base 5. When the base 5 moves, the connecting rod 4 moves with the base 5. The other end of the connecting rod 4 is rotationally connected to the moving member 3, and the connecting rod 4 can rotate around the moving member 3. A trigger mechanism 6 is provided on the fixed base 2 in the path where the moving member 3 slides in the direction where the base 5 is located. The trigger mechanism 6 is electrically connected to the alarm mechanism. When the base 5 descends, the connecting rod 4 is driven to descend, thereby driving the moving member 3 to move downward and contact the trigger mechanism 6, thereby triggering the alarm. There is an angle between the axis of rotation of the connecting rod 4 around the moving member 3 and the straight line in the sliding direction of the moving member 3. That is, the axis of rotation of the connecting rod 4 around the moving member 3 is not colinear with the sliding direction of the moving member 3, so that the connecting rod 4 changes its posture relative to the moving member 3 when it rotates. When the fixed seat 2 remains stationary and the base 5 drives the connecting rod 4 to deflect, the connecting rod 4 rotates around the moving member 3 and can drive the moving member 3 to move along the fixed seat 2.

[0018] The foundation pit deformation monitoring device provided by the present invention has a base 5 located at the bottom of the foundation pit during use, and a fixed seat 2 is fixed and held stationary by corresponding components. By providing the base 5, the coverage area is larger than that of a single connecting rod 4, and the monitoring area can be distributed more widely. When the foundation pit settles, the base 5 moves downward and drives the connecting rod 4 downward, and the connecting rod 4 pulls the moving member 3 downward to contact the trigger mechanism 6, thereby triggering the alarm mechanism to alarm. When the foundation pit settles in an inclined manner or the settlement degree of the two sides of the partial area covered by the base 5 is different, the base 5 is tilted by the settlement of the corresponding area and drives the connecting rod 4 to deflect downward around the inclined area. Since the connecting rod 4 is rotatably connected to the moving member 3, the downward deflection of the connecting rod 4 can drive the moving member 3 downward through the rotating connection. That is to say, when the foundation pit settles, no matter whether only inclined settlement occurs or settlement of a part of the area causes the tilt amplitude of the base 5, or the tilt amplitude of the base 5 is generated during the vertical settlement process, it can be converted into the downward movement of the moving part 3 through the rotation connection of the connecting rod 4, thereby amplifying the moving stroke of the moving part 3 and triggering the alarm faster and more timely. Therefore, the present invention can better monitor the deformation of the foundation pit while expanding the monitoring distribution range, improve the monitoring sensitivity, and enable engineering personnel to obtain the foundation pit deformation signal more timely.

[0019] In the present invention, two connecting rods 4 are provided, one end of each of the two connecting rods 4 is fixed to the base 5, and the other ends of the two connecting rods 4 are tilted and hinged to the moving member 3. Figure 1As shown, the two connecting rods 4 form a nearly triangular structure, which can strengthen the connection strength with the base 5. Moreover, through the connection of the two connecting rods 4, the tilting and deflection of the base 5 can better drive the downward movement of the moving member 3, thereby better amplifying the movement stroke of the moving member 3. Preferably, the vertical projection of the moving member 3 on the base 5 is located in the middle of the base 5, ensuring that when the two ends of the base 5 are tilted, the downward movement stroke of the moving member 3 can be correspondingly amplified.

[0020] Two or more support columns 8 are spaced apart at the bottom of the base 5. These support columns 8 provide support for the base 5, facilitating its placement within the foundation pit. Because foundation pit bottoms often have sloped or irregular surfaces, the two or more support columns 8 are preferably adjustable telescopic structures, specifically, adjustable telescopic rods. The length of the support columns 8 can be adjusted based on their specific locations, accommodating foundation pits with varying slopes.

[0021] Preferably, the axis of rotation of the connecting rod 4 about the moving member 3 is perpendicular to the line in which the moving member 3 slides, making it easier for the connecting rod 4 to rotate and drive the moving member 3. The connecting rod 4 is hinged to the moving member 3 via a ball joint, which allows the connecting rod 4 to have a wider range of rotation and can drive the movement of the moving member 3 based on rotation in different directions. This can convert the irregular deflection and movement of the base 5 during settlement into the downward travel of the moving member 3, further improving the sensitivity of monitoring.

[0022] The present invention also includes a trigger mechanism 2 10 and an offset plate 9, the offset plate 9 is vertically arranged on the base 5, and the surface of the offset plate 9 is used to face the inner side of the foundation pit, such as the support facing the inner side of the foundation pit. The trigger mechanism 2 10 is electrically connected to the alarm mechanism, and the trigger mechanism 2 10 is arranged on the base 5 and facing the offset plate 9. The offset plate 9 can move or rotate on the base 5 under the action of an external force to contact the trigger mechanism 2 10, and the offset plate 9 is specifically connected to the base 5 in rotation. When the support on the inner side of the foundation pit collapses, the offset plate 9 is pushed to flip over and contact the trigger mechanism 2 10, triggering the alarm mechanism to alarm. By arranging the offset plate 9 and the trigger mechanism 2 10, the present invention can not only monitor the settlement of the foundation pit, but also monitor the support status of the inner side of the foundation pit, with a wider range of monitoring and better applicability.

[0023] In one embodiment of the present invention, trigger mechanism 1 (6) and trigger mechanism 2 (10) share a common alarm mechanism. Trigger mechanism 1 (6), trigger mechanism 2 (10), and the alarm mechanism are electrically connected to an external controller. Foundation pit settlement and foundation pit support collapse are signaled by the same alarm mechanism. This embodiment can reduce the number of alarm mechanisms required. In another embodiment of the present invention, the alarm mechanism includes alarm 1 (7) and alarm 2 (11). Trigger mechanism 1 (6) is connected to alarm 1 (7), and trigger mechanism 2 (10) is connected to alarm 2 (11). Specifically, trigger mechanism 1 (6) is electrically connected to the external controller, and the external controller is wired to alarm 1 (7), so that trigger mechanism 1 (6) and alarm 1 (7) are connected. Trigger mechanism 2 (10) is electrically connected to the external controller, and the external controller is wired to alarm 2 (11), so that trigger mechanism 2 (10) and alarm 2 (11) are connected. In this embodiment, foundation pit settlement and foundation pit support collapse can be signaled by corresponding alarms, making it easier for engineers to identify specific settlement conditions. Alarm 1 (7) is mounted on the fixing base (2), and alarm 2 (11) is mounted on the base (5).

[0024] The alarm device 1 7 and the alarm device 2 11 are buzzers or signal lights, which emit buzzing sounds or flashing lights to give alarms and prompts. The trigger mechanism 1 6 and the trigger mechanism 2 10 can be contact travel switches or other contact trigger mechanisms.

[0025] The present invention also includes a bracket 1, and the fixing seat 2 is arranged on the bracket 1. By setting the bracket 1, the fixing seat 2 can be positioned and fixed more conveniently. In actual use, the bracket 1 is fixed to other external foundations to ensure that the bracket 1 and the fixing seat 2 can remain stable when the foundation pit is deformed.

Claims

1. A foundation pit deformation monitoring device, characterized in that: The invention comprises a fixed seat (2), a moving part (3), a connecting rod (4), a base (5) and an alarm mechanism, wherein the moving part (3) is slidably connected to the fixed seat (2), one end of the connecting rod (4) is fixedly connected to the base (5), and the other end is hinged to the moving part (3), a trigger mechanism (6) is provided on the fixed seat (2) in the path where the moving part (3) slides toward the base (5), the trigger mechanism (6) is electrically connected to the alarm mechanism, and the axis of rotation of the connecting rod (4) around the moving part (3) is connected to the moving part (3) There is an angle between the straight lines where the sliding directions are located. When the base (5) drives the connecting rod (4) to deflect, the connecting rod (4) rotates around the moving part (3) and drives the moving part (3) to move along the fixed seat (2). Two connecting rods (4) are provided, one end of each of the two connecting rods (4) is fixed to the base (5), and the other ends of the two connecting rods (4) are inclined and hinged to the moving part (3); more than two support columns (8) are spaced apart at the bottom of the base (5), and the connecting rod (4) is hinged to the moving part (3) through a ball head; It also includes a trigger mechanism 2 (10) and a deflection plate (9) for facing the inner side of the foundation pit, wherein the deflection plate (9) is vertically arranged on the base (5), the trigger mechanism 2 (10) is electrically connected to the alarm mechanism, and the trigger mechanism 2 (10) is arranged on the base (5) and facing the deflection plate (9), and the deflection plate (9) can move or rotate on the base (5) under the action of an external force to contact the trigger mechanism 2 (10).

2. The foundation pit deformation monitoring device according to claim 1, characterized in that: The vertical projection of the moving part (3) on the base (5) is located in the middle of the base (5).

3. The foundation pit deformation monitoring device according to claim 1, characterized in that: The two or more support columns (8) are all adjustable telescopic structures.

4. The foundation pit deformation monitoring device according to claim 1, characterized in that: The alarm mechanism includes an alarm 1 (7) and an alarm 2 (11), the trigger mechanism 1 (6) is connected to the alarm 1 (7) correspondingly, and the trigger mechanism 2 (10) is connected to the alarm 2 (11) correspondingly.

5. The foundation pit deformation monitoring device according to claim 4, characterized in that: The alarm device 1 (7) and the alarm device 2 (11) are buzzers or signal lights.

6. The foundation pit deformation monitoring device according to any one of claims 1 to 5, characterized in that: It also includes a bracket (1), and the fixing seat (2) is arranged on the bracket (1).

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