Deep foundation pit slope monitoring device

Abstract

The utility model discloses a deep foundation pit gradient monitoring device which comprises a measuring beam arranged on the edge of an upper opening of a foundation pit, and a walking mechanism is arranged on the measuring beam. The walking mechanism comprises two walking rails installed on the measuring beam side by side, a walking base connected between the two walking rails in a sliding mode and a driving motor installed on the measuring beam, an output shaft of the driving motor is connected with a ball screw, the ball screw penetrates through the walking base, and an infrared distance meter is installed on the lower portion of the walking base; a supporting reinforcing rib plate is further installed between the bottom of the measuring beam and the foundation pit, and a pull rope is installed between the upper portion of the measuring beam and the foundation pit. According to the utility model, the slope surface of the deep foundation pit is effectively measured by changing the traditional mode of directly putting a vertical line to the lower edge opening of the foundation pit for measurement, so that more accurate measurement data is obtained by integrating data, the slope surface of the deep foundation pit can be effectively monitored, and safety accidents are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to a deep foundation pit slope monitoring device. Background Technology

[0002] The slope of a deep foundation pit is usually expressed as the ratio of the pit's depth (H) to the slope's bottom width (B). This ratio is also known as the slope coefficient or gradient coefficient, and is expressed as (1:m) = H / B. Where m is the ratio of the slope's bottom width B to the pit's depth H.

[0003] There are two main factors that affect the slope of the foundation pit:

[0004] Soil properties: Soil stability and strength are key factors determining slope gradient. Different types of soil have different shear strengths and plasticities, which affect slope stability.

[0005] Excavation pit depth: The depth of the excavation pit also affects the slope gradient. Deeper excavations require steeper slope gradients to maintain stability.

[0006] The accuracy of slope ratio control in deep foundation pit excavation is one of the key factors affecting the stability of deep foundation pit slopes. Current technologies for controlling slope ratio in deep foundation pit excavation involve roughly measuring the horizontal distance from the bottom edge to the top edge of the pit after excavation, using a plumb line. This rough calculation method can only determine the slope under ideal conditions and cannot accurately calculate the slope for deep foundation pit support systems in complex terrain, especially for layered excavation. Utility Model Content

[0007] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a deep foundation pit slope monitoring device. By changing the traditional method of directly placing a plumb line to the bottom edge of the foundation pit for measurement, this device effectively measures the slope of the deep foundation pit, thereby obtaining more accurate measurement data through comprehensive data analysis. It can also effectively monitor the slope of the deep foundation pit, reducing safety accidents.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A deep foundation pit slope monitoring device includes a measuring beam installed at the upper edge of the foundation pit, and a walking mechanism installed on the measuring beam. The walking mechanism includes two walking tracks installed side by side on the measuring beam, a walking base slidably connected between the two walking tracks, a drive motor installed on the measuring beam, a ball screw connected to the output shaft of the drive motor, the ball screw passing through the walking base, and an infrared rangefinder installed at the lower part of the walking base. A supporting reinforcing rib is also installed between the bottom of the measuring beam and the foundation pit, and a pull rope is installed between the upper part of the measuring beam and the foundation pit.

[0010] Furthermore, the walking base includes a mounting plate and a base plate, a slider disposed between the mounting plate and the walking track, and a lead screw bushing mounted on the bottom of the mounting plate, wherein the lead screw bushing is connected to a ball screw.

[0011] Furthermore, the slider comprises at least two, and each slider is connected to one of the travel tracks.

[0012] Furthermore, the base plate is connected to the mounting plate via connecting screws.

[0013] Furthermore, an infrared rangefinder mounting slot is provided at the bottom of the base plate.

[0014] Furthermore, the mounting plate is provided with multiple threaded connection holes.

[0015] Compared with the prior art, the advantages of this utility model are as follows: First, this utility model uses a horizontal measuring beam installed at the upper edge of the deep foundation pit, and controls the rotation of the ball screw on the measuring beam by a drive motor. The walking base equipped with an infrared rangefinder moves on the walking track. By moving between the upper and lower edges of the deep foundation pit, the slope of different node positions of the deep foundation pit can be obtained, which can effectively monitor the slope of the deep foundation pit and avoid the problems of displacement or slope not meeting the design requirements. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 Schematic diagram of the deep foundation pit slope monitoring device provided by this utility model Figure 1 ;

[0018] Figure 2 Schematic diagram of the deep foundation pit slope monitoring device provided by this utility model Figure 2 .

[0019] Reference numerals in the attached diagram: 1. Measuring beam; 2. Supporting reinforcing rib; 3. Pull rope; 4. Traveling track; 5. Mounting plate; 6. Drive motor; 7. Ball screw; 8. Threaded connection hole; 9. Screw bushing; 10. Base plate; 11. Connecting screw. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, 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, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0024] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0027] like Figures 1-2 As shown, a deep foundation pit slope monitoring device includes a measuring beam 1 set at the upper edge of the foundation pit, and a walking mechanism is provided on the measuring beam 1; the walking mechanism includes two walking tracks 4 installed side by side on the measuring beam 1, a walking base slidably connected between the two walking tracks 4, a drive motor 6 installed on the measuring beam 1, the output shaft of the drive motor 6 is connected to a ball screw 7, and the ball screw 7 passes through the walking base, and an infrared rangefinder is installed at the lower part of the walking base; a supporting reinforcing rib plate 2 is also installed between the bottom of the measuring beam 1 and the foundation pit, and a pull rope 3 is installed between the upper part of the measuring beam 1 and the foundation pit.

[0028] Compared to existing technologies, the slope measurement of foundation pits mainly involves placing a plumb line at the edge of the pit and calculating the height difference between the upper and lower edges, as well as the horizontal distance between them, to roughly estimate the slope. This method is particularly inaccurate for deep foundation pits with layered excavation and support. In this invention, a drive motor 6 rotates a ball screw 7, which in turn moves an infrared rangefinder horizontally. The infrared rangefinder provides real-time monitoring of the height of the foundation pit. Furthermore, the rotational speed, diameter, and lead of the ball screw 7 are used to calculate the horizontal distance, enabling real-time monitoring of the pit's edge and ensuring the uniformity of slope distribution at different locations, thus preventing slope instability.

[0029] The walking base includes a mounting plate 5 and a base plate 10, a slider disposed between the mounting plate 5 and the walking track 4, and a lead screw bushing 9 mounted on the bottom of the mounting plate 5, wherein the lead screw bushing 9 is connected to a ball screw 7. The ball screw 7 drives the lead screw bushing 9 to move, thereby causing the walking base to slide on the walking track 4 and moving the infrared rangefinder to a designated position.

[0030] The slider comprises at least two sliders, each of which is connected to one of the travel tracks 4. The stability is enhanced by the separate placement of the two sliders.

[0031] The base plate 10 is connected to the mounting plate 5 via connecting screws 11. An infrared rangefinder mounting slot is provided at the bottom of the base plate 10. The infrared rangefinder is mounted on the base plate 10, which is then connected to the mounting plate 5.

[0032] The mounting plate 5 is provided with multiple threaded connection holes 8.

[0033] In practical use, the measuring beam 1 of the monitoring device provided by this utility model is installed at the upper edge of the deep foundation pit, and the measuring beam 1 is kept horizontal during installation. A traveling track 4 and an infrared rangefinder are installed on the measuring beam 1. The distance H from the slope to the upper edge is obtained by measuring the slope using the infrared rangefinder, and the distance traveled is obtained by the movement of the ball screw 7, thereby obtaining the width B of the slope at that height point. Thus, the slope of the deep foundation pit can be simply and clearly obtained through the ratio. Furthermore, the infrared rangefinder can measure the slope at multiple points in the deep foundation pit to obtain the slope at different locations, determine whether the slope distribution is uniform and meets design requirements, and compare with previous data to determine whether slope displacement has occurred, thereby effectively monitoring the slope of the deep foundation pit.

[0034] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A deep foundation pit slope monitoring device, characterized in that: The device includes a measuring beam (1) set at the upper edge of the pit, and a walking mechanism is provided on the measuring beam (1); the walking mechanism includes two walking rails (4) installed side by side on the measuring beam (1), a walking base slidably connected between the two walking rails (4), a drive motor (6) installed on the measuring beam (1), the output shaft of the drive motor (6) is connected to a ball screw (7), and the ball screw (7) passes through the walking base, and an infrared rangefinder is installed at the lower part of the walking base; a supporting reinforcing rib plate (2) is also installed between the bottom of the measuring beam (1) and the pit, and a pull rope (3) is installed between the upper part of the measuring beam (1) and the pit.

2. The deep foundation pit slope monitoring device according to claim 1, characterized in that: The walking base includes a mounting plate (5) and a base plate (10), a slider disposed between the mounting plate (5) and the walking track (4), and a lead screw bushing (9) mounted on the bottom of the mounting plate (5), and the lead screw bushing (9) is connected to the ball screw (7).

3. The deep foundation pit slope monitoring device according to claim 2, characterized in that: The sliders include at least two, and each slider is connected to one of the travel tracks (4).

4. The deep foundation pit slope monitoring device according to claim 2, characterized in that: The base plate (10) is connected to the mounting plate (5) by a connecting screw (11).

5. The deep foundation pit slope monitoring device according to claim 2, characterized in that: The bottom of the base plate (10) is provided with an infrared rangefinder mounting slot.

6. The deep foundation pit slope monitoring device according to claim 2, characterized in that: The mounting plate (5) is provided with multiple threaded connection holes (8).

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