Foundation pit side wall deformation monitoring device

Abstract

The utility model discloses a foundation pit side wall deformation monitoring device which comprises a monitoring frame fixed in a foundation pit, a plurality of sliding seats capable of being close to and far away from the side wall of the foundation pit are movably arranged on the monitoring frame, an elastic piece is arranged between each sliding seat and the monitoring frame, each sliding seat is provided with a pushed rod, and the pushed rods abut against the side wall of the foundation pit. Proximity switches and touch pieces are arranged on the monitoring frame and the sliding seat respectively, the proximity switches and the touch pieces are arranged in a one-to-one correspondence mode, an alarm is arranged on the monitoring frame, and the alarm is electrically connected with the proximity switches. The foundation pit side wall deformation monitoring device is convenient to install, high in efficiency, simple in structure, low in cost and capable of accurately providing warning in time.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation pit detection equipment, specifically to a foundation pit sidewall deformation monitoring device. Background Technology

[0002] In building construction, it is necessary to excavate foundation pits on the ground. As the soil in the foundation pit is excavated, the soil on the sidewalls of the foundation pit tends to move into the pit. It is necessary to monitor the horizontal deformation of the soil to determine the safety and stability of the support structure and reduce potential safety hazards.

[0003] Chinese patent application number 202123298297.9 discloses a support pile for monitoring the horizontal displacement of a foundation pit. Specifically, it discloses a foundation pit excavated on the ground and support piles fixed to the inner wall of the pit. A bracket is fixedly installed on the top of the support pile, and a monitoring prism is fixedly installed on the top of the bracket. An installation plate is fixedly installed on the ground outside the foundation pit, and an installation housing is fixedly installed on top of the installation plate. This application, by installing monitoring prisms on the support piles of the foundation pit and setting prisms at monitoring points, and using a total station outside the foundation pit for measurement, can obtain the inclination of the foundation pit to determine whether horizontal displacement has occurred, thereby achieving real-time detection of the horizontal displacement of the foundation pit and ensuring the accuracy of the detection data. However, using a combination of monitoring prisms and total stations to monitor the horizontal displacement of the foundation pit has several drawbacks. First, the overall structure is complex, installation is cumbersome, efficiency is low, and costs are high. Second, the monitoring prisms are mounted on the support piles, which may not tilt with the sidewalls of the foundation pit. Therefore, it is difficult to accurately reflect the deformation of the sidewalls of the foundation pit and cannot provide timely and accurate warnings. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a pit sidewall deformation monitoring device that is easy to install, highly efficient, simple in structure and low in cost, and can provide timely and accurate warnings.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A device for monitoring the deformation of the sidewall of a foundation pit includes a monitoring frame fixed inside the foundation pit. Multiple sliding seats are movably mounted on the monitoring frame, allowing them to approach and move away from the sidewall of the foundation pit. An elastic element is provided between the sliding seats and the monitoring frame. A push rod is provided on each sliding seat, and the push rod abuts against the sidewall of the foundation pit. Proximity switches and contact elements are respectively provided on the monitoring frame and the sliding seats, arranged in a one-to-one correspondence. An alarm is provided on the monitoring frame, and the alarm is electrically connected to the proximity switches.

[0007] As a further improvement to the above technical solution:

[0008] The monitoring frame is box-shaped, and the sliding seat and elastic element are both located inside the monitoring frame. The elastic element is located on the side wall of the sliding seat away from the pit. The box wall of the monitoring frame and the corresponding positions of each push rod are provided with through holes, and the push rod is movably inserted into the corresponding through holes.

[0009] The push rod is threadedly connected to the sliding seat.

[0010] The monitoring frame is equipped with guide rods, and the sliding seat slides on the corresponding guide rods.

[0011] The elastic element is a spring sleeved on the guide rod.

[0012] The monitoring frame includes a box body and a box cover. The box body is fixed inside the pit and has an opening on the side wall away from the pit. The box cover is placed over the opening of the box body, and the guide rod is fixed inside the box body.

[0013] The box cover is installed on the box body with screws, and the box body is fixed in the pit with anchors.

[0014] The monitoring frame has multiple mounting cavities, and each sliding seat is slidably installed in each mounting cavity. A scale is provided in each mounting cavity.

[0015] The sliding seat is equipped with rollers, which abut against the inner wall of the mounting cavity.

[0016] The alarm is installed on the top surface of the monitoring frame.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] This utility model discloses a pit sidewall deformation monitoring device. When the pit sidewall deforms inward, the push rods, which abut against the deformed portion of the sidewall, are pushed by the deformation of the sidewall, causing the sliding seat to move away from the sidewall while overcoming the elastic force of the elastic element. Proximity switches or contact elements move with the sliding seat. When the corresponding proximity switches and contact elements contact, the alarm is activated. In this pit sidewall deformation monitoring device, each sliding seat and monitoring frame is equipped with a proximity switch and a contact element at a relative position. When any corresponding proximity switch and contact element contact, the alarm is activated, thus enabling timely and accurate detection of excessive sidewall deformation and providing timely warnings. Compared to existing technologies, this device offers several advantages. First, it allows for easy and efficient installation by directly installing the monitoring frame inside the pit and having each push rod abut against the pit sidewall. It also features a simple structure and low cost. Second, by monitoring the push rods at different positions, it accurately reflects the deformation of the pit sidewall and provides timely and accurate warnings. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the main cross-section of the foundation pit sidewall deformation monitoring device of this utility model.

[0020] Figure 2 This is a top view schematic diagram of the foundation pit sidewall deformation monitoring device of this utility model.

[0021] The labels in the diagram represent:

[0022] 1. Excavation pit; 11. Side wall; 2. Monitoring frame; 21. Box body; 211. Anchor; 22. Box cover; 221. Screw; 23. Mounting cavity; 231. Scale; 3. Sliding seat; 31. Roller; 4. Elastic element; 5. Push rod; 51. Through hole; 6. Proximity switch; 7. Contact element; 8. Alarm; 9. Guide rod. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Figure 1 and Figure 2This invention illustrates an embodiment of the foundation pit sidewall deformation monitoring device. The device includes a monitoring frame 2 fixed within the foundation pit 1. Multiple sliding seats 3 are movably mounted on the monitoring frame 2, allowing them to approach and move away from the sidewall 11 of the foundation pit 1. An elastic element 4 is provided between the sliding seats 3 and the monitoring frame 2. A push rod 5 is mounted on the sliding seats 3, abutting against the sidewall 11 of the foundation pit 1. Proximity switches 6 and contact elements 7 are respectively mounted on the monitoring frame 2 and the sliding seats 3, arranged in a one-to-one correspondence. An alarm 8 is mounted on the monitoring frame 2, and the alarm 8 is electrically connected to the proximity switches 6.

[0028] When the sidewall 11 of the foundation pit 1 deforms inward, the push rod 5, which abuts against the deformed part of the sidewall 11, is pushed by the deformation of the sidewall 11, causing the sliding seat 3 to move away from the sidewall 11 while overcoming the elastic force of the elastic element 4. The proximity switch 6 or the contact element 7 moves with the sliding seat 3. When the relative proximity switch 6 and the contact element 7 come into contact, the alarm 8 is energized and alarms are triggered. In this foundation pit sidewall deformation monitoring device, each sliding seat 3 and the monitoring frame 2 is equipped with a proximity switch 6 and a contact element 7 at a relative position. When any relative proximity switch 6 and the contact element 7 come into contact, the alarm 8 is energized and alarms are triggered, which can detect excessive deformation of the sidewall 11 in a timely and accurate manner and provide timely alarm warnings. Compared with existing technologies, on the one hand, the monitoring frame 2 can be directly installed in the pit 1 and each push rod 5 can be made to abut against the side wall 11 of the pit 1. The installation is convenient and efficient, and the structure is simple and the cost is low. On the other hand, by monitoring each push rod 5 at different positions, the deformation of the side wall 11 of the pit 1 can be accurately reflected, and timely and accurate warnings can be provided.

[0029] Furthermore, in this embodiment, the monitoring frame 2 is box-shaped, with the sliding seat 3 and the elastic element 4 both located inside the monitoring frame 2. The elastic element 4 is located on the side wall 11 of the sliding seat 3 away from the pit 1. Through holes 51 are provided at corresponding positions on the box wall of the monitoring frame 2 and on each push rod 5, allowing the push rod 5 to move through the corresponding through holes 51. The sliding seat 3 and the elastic element 4 are both located inside the monitoring frame 2 to avoid interference from the external environment. Specifically, the elastic element 4 rests against the side wall 11 of the monitoring frame 2 away from the pit 1, causing the push rod 5 to rest against the side wall 11 of the pit 1.

[0030] Furthermore, in this embodiment, the push rod 5 is threadedly connected to the sliding seat 3, which facilitates disassembly and assembly. In particular, after both the sliding seat 3 and the elastic element 4 are installed inside the monitoring frame 2, the push rod 5 can be threadedly connected to the sliding seat 3 through the through hole 51 from the outside, which is beneficial for overall assembly.

[0031] Furthermore, in this embodiment, the monitoring frame 2 is provided with guide rods 9, and the sliding seat 3 is slidably mounted on the corresponding guide rods 9. One sliding seat 3 corresponds to at least two guide rods 9, and the guide rods 9 guide the sliding of the sliding seat 3, so that the sliding seat 3 slides smoothly.

[0032] Furthermore, in this embodiment, the elastic element 4 is a spring sleeved on the guide rod 9. Preferably, the sliding seat 3 is plate-shaped.

[0033] Furthermore, in this embodiment, the monitoring frame 2 includes a housing 21 and a cover 22. The housing 21 is fixed inside the pit 1 and has an opening on the side wall 11 away from the pit 1. The cover 22 is placed over the opening of the housing 21, and the guide rod 9 is fixed inside the housing 21. Thus, during assembly, the sliding seat 3 and the elastic element 4 can be installed into the housing 21 in sequence; then the cover 22 is placed on top, pressing against the elastic element 4; next, the push rod 5 is threaded through the through hole 51 and connected to the sliding seat 3; finally, the housing 21 is fixed inside the pit 1. Clearly, the overall assembly and installation are very convenient.

[0034] Furthermore, in this embodiment, the box cover 22 is installed on the box body 21 by screws 221, and the box body 21 is fixed in the pit 1 by anchors 211, which makes disassembly and assembly convenient.

[0035] Furthermore, in this embodiment, multiple mounting cavities 23 are formed within the monitoring frame 2, and each sliding seat 3 is slidably disposed within each mounting cavity 23. A scale 231 is provided within each mounting cavity 23. Since each sliding seat 3 is slidably disposed within its respective mounting cavity 23 without interfering with each other, the independence of each sliding seat 3 is improved. The scale 231 within each mounting cavity 23 allows for the installation of cameras within each cavity 23 or the creation of viewing windows on each cavity 23 to observe the displacement of the sliding seat 3, thereby monitoring the current deformation of the sidewall 11 of the pit 1. This allows for early observation and warning before the alarm 8 sounds.

[0036] Furthermore, in this embodiment, the sliding seat 3 is provided with rollers 31, which abut against the inner wall of the mounting cavity 23. The sliding seat 3 abuts against the inner wall of the mounting cavity 23 through the rollers 31, which on the one hand makes the sliding seat 3 more stable, and on the other hand reduces the friction between the sliding seat 3 and the mounting cavity 23.

[0037] Furthermore, in this embodiment, the alarm 8 is installed on the top surface of the monitoring frame 2.

[0038] It should be noted that the proximity switch 6, the contact element 7, and the alarm 8 are all commercially available standard components, and their connection relationships are also standard. The proximity switch 6 and the contact element 7 are respectively mounted on the sliding base 3 and the monitoring frame 2, that is, one is mounted on the sliding base 3 and the other is mounted on the monitoring frame 2. At least one pair of proximity switches 6 and contact elements 7 are installed in each mounting cavity 23.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A device for monitoring the deformation of the sidewall of a foundation pit, characterized in that: The system includes a monitoring frame (2) fixed inside the foundation pit (1). The monitoring frame (2) is equipped with multiple sliding seats (3) that can move close to and away from the side wall (11) of the foundation pit (1). An elastic element (4) is provided between the sliding seat (3) and the monitoring frame (2). A push rod (5) is provided on the sliding seat (3). The push rod (5) abuts against the side wall (11) of the foundation pit (1). A proximity switch (6) and a contact element (7) are respectively provided on the monitoring frame (2) and the sliding seat (3). The proximity switch (6) and the contact element (7) are arranged in a one-to-one correspondence. An alarm (8) is provided on the monitoring frame (2). The alarm (8) is electrically connected to the proximity switch (6).

2. The excavation pit sidewall deformation monitoring device according to claim 1, characterized in that: The monitoring frame (2) is box-shaped. The sliding seat (3) and the elastic element (4) are both located inside the monitoring frame (2). The elastic element (4) is located on the side wall (11) of the sliding seat (3) away from the pit (1). The box wall of the monitoring frame (2) and the corresponding positions of each push rod (5) are provided with through holes (51). The push rod (5) is movably inserted into the corresponding through hole (51).

3. The excavation pit sidewall deformation monitoring device according to claim 2, characterized in that: The push rod (5) is threadedly connected to the sliding seat (3).

4. The excavation pit sidewall deformation monitoring device according to claim 2, characterized in that: The monitoring frame (2) is equipped with a guide rod (9), and the sliding seat (3) slides on the corresponding guide rod (9).

5. The excavation pit sidewall deformation monitoring device according to claim 4, characterized in that: The elastic element (4) is a spring sleeved on the guide rod (9).

6. The excavation pit sidewall deformation monitoring device according to claim 5, characterized in that: The monitoring frame (2) includes a box (21) and a box cover (22). The box (21) is fixed inside the pit (1) and has an opening on the side wall (11) away from the pit (1). The box cover (22) is placed over the opening of the box (21). The guide rod (9) is fixed inside the box (21).

7. The excavation pit sidewall deformation monitoring device according to claim 6, characterized in that: The cover (22) is mounted on the box body (21) by screws (221), and the box body (21) is fixed in the pit (1) by anchors (211).

8. The excavation pit sidewall deformation monitoring device according to claim 2, characterized in that: Multiple mounting cavities (23) are formed inside the monitoring frame (2), and each sliding seat (3) is slidably installed in each mounting cavity (23). A scale (231) is provided inside the mounting cavity (23).

9. The excavation pit sidewall deformation monitoring device according to claim 7, characterized in that: The sliding seat (3) is provided with a roller (31), which abuts against the inner wall of the mounting cavity (23).

10. The excavation pit sidewall deformation monitoring device according to any one of claims 1 to 9, characterized in that: The alarm (8) is installed on the top surface of the monitoring frame (2).

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