Foundation pit displacement monitoring device

Abstract

The utility model discloses a foundation pit displacement monitoring device. The foundation pit displacement monitoring device comprises a laser measuring instrument assembly and a scale label assembly which are installed on a foundation pit detection plane. The laser measuring instrument assembly comprises a first fixed base and a cross laser measuring instrument, and the cross laser measuring instrument is installed on the first fixed base through a first telescopic vertical rod; the scale label assembly comprises a second fixed base and a scale label, and the scale label is installed on the second fixed base through a second telescopic vertical rod; the monitoring device can monitor the horizontal displacement and the vertical displacement of the foundation pit at the same time, installation is easy and convenient, data reading is convenient and fast, and the horizontal displacement and the vertical displacement of the foundation pit can be monitored in real time.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation pit structure deformation detection equipment, and in particular to a foundation pit displacement monitoring device. Background Technology

[0002] In modern construction engineering, foundation pit engineering is a crucial part of infrastructure construction. Foundation pits are often located close to existing buildings, roads, underground pipelines, and other important facilities. During the excavation process, the stress state of the soil changes, which may lead to deformation of the retaining structure and displacement of the surrounding soil. If the deformation is too large, it may cause serious accidents such as foundation pit collapse, tilting and cracking of surrounding buildings, and damage to underground pipelines. Therefore, accurate monitoring of foundation pit displacement is of paramount importance.

[0003] Currently, the inclinometers and levels used for foundation pit monitoring can only measure the horizontal or vertical displacement of the foundation pit. Furthermore, the equipment is complex to install and measure, and it is inconvenient to read the values. In addition, common simple measurement methods, such as handheld or temporary measurement equipment, cannot guarantee the levelness, resulting in inaccurate measurement data. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an improved foundation pit displacement monitoring device in order to overcome the shortcomings of the existing technology.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a foundation pit displacement monitoring device, including a laser measuring instrument component and a scale label component installed on the foundation pit detection plane;

[0006] The laser measuring instrument assembly includes a first fixed base and a cross laser measuring instrument, wherein the cross laser measuring instrument is mounted on the first fixed base via a first telescopic upright;

[0007] The scale label assembly includes a second fixed base and a scale label, wherein the scale label is mounted on the second fixed base via a second telescopic upright.

[0008] The cross-shaped infrared laser emitted by the cross laser measuring instrument illuminates the scale plate, which is equipped with a planar coordinate system to represent position data.

[0009] By adopting the above technical solution, the cross laser measuring instrument and the scale mark are fixed to the foundation pit through the fixed base, so that the two are stably connected to the foundation pit and the accuracy of the data is avoided from being affected by external factors.

[0010] Furthermore, both the first and second telescopic poles of this utility model are provided with locking knobs for fixing the height of the poles;

[0011] By adopting the above technical solution, the height of the laser measuring instrument and the scale mark can be adjusted by using a telescopic pole, ensuring that the laser measuring instrument and the scale mark are on the same horizontal plane.

[0012] Furthermore, in the planar coordinate system described in this utility model, the positive x-axis is aligned with the inside of the foundation pit, the negative x-axis is aligned with the outside of the foundation pit, the positive y-axis is aligned with the top of the foundation pit, and the negative y-axis is aligned with the bottom of the foundation pit.

[0013] By adopting the above technical solution, in the horizontal direction: positive sign / positive direction indicates horizontal displacement into the pit, negative sign / negative direction indicates horizontal displacement out of the pit; in the vertical direction: positive sign / positive direction indicates pit bulging, negative sign / negative direction indicates pit sinking.

[0014] Furthermore, the planar coordinate system described in this invention has a unit scale of millimeters, which can accurately monitor the displacement of the foundation pit.

[0015] The beneficial effects of this utility model are: the monitoring device of this utility model solves the problems of single-function measuring devices in the prior art, and can simultaneously monitor the horizontal and vertical displacement of the foundation pit. It is easy to install and the data can be read quickly and conveniently. At the same time, the device of this utility model, through the fixed installation in pairs and the cooperation of coordinate system scale plates, makes it easier to adjust and maintain the levelness before measurement, so that the measurement is more accurate and the deformation status of the foundation pit can be understood in a timely manner. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] The following are labeled in the diagram: 1. Excavation pit inspection plane, 2. First fixed base, 3. Cross laser measuring instrument, 4. First telescopic pole, 5. Second fixed base, 6. Scale plate, 7. Second telescopic pole, 8. Locking knob. Detailed Implementation

[0019] 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.

[0020] like Figure 1 The foundation pit displacement monitoring device shown includes a laser measuring instrument assembly and a scale label assembly installed on the foundation pit detection plane 1;

[0021] The laser measuring instrument assembly includes a first fixed base 2 and a cross laser measuring instrument 3, the cross laser measuring instrument 3 being mounted on the first fixed base 2 via a first telescopic pole 4; the scale label assembly includes a second fixed base 5 and a scale label 6, the scale label 6 being mounted on the second fixed base 5 via a second telescopic pole 7;

[0022] The cross-shaped infrared laser emitted by the cross laser measuring instrument 3 illuminates the scale plate 6, which has a planar coordinate system for representing position data.

[0023] Both the first telescopic upright 4 and the second telescopic upright 7 are equipped with locking knobs 8 for fixing the height of the uprights. The positive x-axis of the plane coordinate system is aligned with the inside of the pit, the negative x-axis with the outside of the pit, the positive y-axis with the top of the pit, and the negative y-axis with the bottom of the pit. The unit of measurement for the plane coordinate system is millimeters.

[0024] Working principle:

[0025] Before measurement, the fixed base secures the cross laser measuring instrument and scale mark to the foundation pit, ensuring a stable connection between the two and the foundation pit and avoiding external interference to ensure data accuracy; the upright can be extended and retracted, and the height of the upright can be fixed by locking the knob to ensure that the laser measuring instrument and scale mark are on the same horizontal plane;

[0026] During measurement, the cross laser measuring instrument emits a cross laser to position itself on the scale, displaying horizontal and vertical displacement data. The horizontal and vertical displacement of the foundation pit is determined by the displacement change between two consecutive measurements.

[0027] Horizontal measurements: x1, x2, x3...xn

[0028] Vertical measurements: y1, y2, y3...yn

[0029] Horizontal displacement change X = xn - x1

[0030] Vertical displacement change Y = yn - y1

[0031] Horizontal direction: Positive sign / positive direction indicates horizontal displacement into the pit, negative sign / negative direction indicates horizontal displacement outward from the pit; Vertical direction: Positive sign / positive direction indicates pit bulging, negative sign / negative direction indicates pit sinking.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A foundation pit displacement monitoring device, characterized in that: Includes a laser measuring instrument assembly and a scale marking assembly installed on the pit detection plane (1); The laser measuring instrument assembly includes a first fixed base (2) and a cross laser measuring instrument (3), wherein the cross laser measuring instrument (3) is mounted on the first fixed base (2) via a first telescopic pole (4); The scale label assembly includes a second fixed base (5) and a scale label (6), wherein the scale label (6) is mounted on the second fixed base (5) via a second telescopic upright (7); The cross infrared laser emitted by the cross laser measuring instrument (3) illuminates the scale plate (6), which is provided with a planar coordinate system to represent position data.

2. The foundation pit displacement monitoring device as described in claim 1, characterized in that: Both the first telescopic pole (4) and the second telescopic pole (7) are equipped with locking knobs (8) for fixing the height of the poles.

3. The foundation pit displacement monitoring device as described in claim 1, characterized in that: In the aforementioned planar coordinate system, the positive x-axis is aligned with the inside of the excavation pit, the negative x-axis is aligned with the outside of the excavation pit, the positive y-axis is aligned with the top of the excavation pit, and the negative y-axis is aligned with the bottom of the excavation pit.

4. The foundation pit displacement monitoring device as described in claim 1, characterized in that: The unit scale of the aforementioned planar coordinate system is millimeters.

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