Foundation pit monitoring device for constructional engineering

Abstract

The utility model discloses a building engineering foundation pit monitoring device, which relates to the technical field of foundation pit monitoring and comprises a fixed support, a plurality of mounting supports are mounted on the fixed support, and laser displacement sensors are fixedly mounted on the mounting supports. The installation support is composed of a square rod, a bottom supporting plate, a top base plate, two fixed insertion rods, a movable base plate, a fixed spring and a contact roller, the bottom supporting plate is fixedly installed at the lower end of the square rod, the top base plate is fixedly installed at the upper end of the square rod, the two fixed insertion rods are symmetrically and fixedly installed at the lower end of the top base plate, and the square rod is sleeved with the movable base plate in an up-down sliding mode; by arranging the foundation pit monitoring device composed of the fixing support, the mounting support and the laser displacement sensor, the foundation pit can be monitored in real time, so that abnormal conditions such as deformation, inclination and cracking of the foundation pit can be found in time, accidents such as collapse are avoided, damage to facilities such as surrounding roads, bridges and pipelines caused by foundation pit construction is prevented, and the construction safety of the foundation pit is improved. And the life safety of construction workers is ensured.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit monitoring technology, and in particular to a foundation pit monitoring device for building engineering. Background Technology

[0002] A building foundation pit is a space excavated downwards from the ground for the construction of the underground part of a building or structure; it is a geotechnical engineering term. Foundation pit engineering includes multiple stages such as earthwork excavation, foundation pit support, foundation pit safety protection, and foundation pit drainage. Each stage must be carried out strictly in accordance with the design and construction plan to ensure construction safety and project quality.

[0003] Due to factors such as hydrology, climate, geological conditions, pit shape, pit depth, pit size, surrounding environmental conditions, and the design and construction of support structures, building foundation pits are prone to deformation, tilting, and cracking during excavation. This can damage surrounding roads, bridges, pipelines, and other facilities, affect residents' production and lives, and even threaten the lives of construction workers inside and around the pit. Therefore, a building foundation pit monitoring device is needed to monitor the foundation pit in real time to ensure construction safety and the stability of surrounding buildings and underground facilities. Utility Model Content

[0004] The main purpose of this utility model is to provide a monitoring device for foundation pits in building engineering, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A foundation pit monitoring device for construction engineering includes a fixed support, on which several mounting brackets are installed. A laser displacement sensor is fixedly installed on each mounting bracket. The mounting bracket consists of a square rod, a bottom support plate, a top base plate, fixed inserts, a movable base plate, fixed springs, and contact rollers. The bottom support plate is fixedly installed at the lower end of the square rod, and the top base plate is fixedly installed at the upper end of the square rod. There are two fixed inserts, which are symmetrically fixedly installed at the lower end of the top base plate. The movable base plate is slidably sleeved on the square rod. The fixed springs are fixedly installed at the lower end of the movable base plate, and there are four contact rollers, all of which are rotatably installed inside the movable base plate.

[0007] Preferably, the fixed bracket consists of a mounting base plate, a support frame, and a fixed base plate. There are two support frames that are symmetrically fixedly installed at the lower end of the mounting base plate, and the fixed base plate is fixedly installed at the lower end of the two support frames.

[0008] Preferably, the mounting base plate has a guide rail groove, and a plurality of fixing holes are symmetrically formed on both sides of the guide rail groove on the mounting base plate, and the guide rail groove and fixing holes both penetrate the mounting base plate vertically.

[0009] Preferably, the square rod on the mounting bracket is slidably mounted in the guide rail groove, the top base plate is located above the mounting base plate, the bottom support plate is located below the mounting base plate, and the fixing rod is inserted into the fixing hole.

[0010] Preferably, the movable base plate on the mounting bracket has four symmetrically formed roller grooves, and a square hole is formed on the movable base plate and between the four roller grooves. The movable base plate is slidably mounted on the square rod through the square hole. The contact roller is rotatably mounted in the roller groove. The fixing spring is sleeved on the square rod. The movable base plate, the fixing spring and the contact roller are all located below the mounting base plate, and the contact roller contacts the lower end of the mounting base plate under the elastic force of the fixing spring.

[0011] Preferably, the laser displacement sensor is fixedly mounted on the upper end of the top substrate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting up a foundation pit monitoring device consisting of a fixed support, an installation bracket, and a laser displacement sensor, the foundation pit can be monitored in real time. This allows for the timely detection of abnormalities such as deformation, tilting, and cracking, preventing accidents such as collapses and protecting surrounding roads, bridges, pipelines, and other facilities from damage during foundation pit construction, thus ensuring the safety of construction workers. Furthermore, by setting up the installation bracket and mounting the laser displacement sensor on it, the position of the laser displacement sensor can be easily adjusted according to the monitoring needs of the foundation pit, making the foundation pit monitoring device highly adaptable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the fixing bracket of this utility model;

[0016] Figure 3 This is a schematic diagram showing the positional relationship between the mounting base plate and the mounting bracket after being cut apart according to this utility model.

[0017] Figure 4 This is a schematic diagram of the mounting bracket and laser displacement sensor of this utility model;

[0018] Figure 5 This is a structural schematic diagram of the square rod, bottom support plate, top base plate, and fixing rod of this utility model;

[0019] Figure 6 This is an exploded view of the movable base plate, fixed spring, and contact roller of this utility model.

[0020] In the diagram: 1. Fixed bracket; 2. Mounting bracket; 3. Laser displacement sensor; 4. Mounting base plate; 5. Support frame; 6. Fixed base plate; 7. Guide rail groove; 8. Fixing hole; 9. Square rod; 10. Bottom support plate; 11. Top base plate; 12. Fixed insertion rod; 13. Moving base plate; 14. Fixed spring; 15. Contact roller; 16. Roller groove; 17. Square hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a foundation pit monitoring device for construction projects includes a fixed support 1, on which several mounting brackets 2 are installed. Laser displacement sensors 3 are fixedly mounted on the mounting brackets 2. Each mounting bracket 2 consists of a square rod 9, a bottom support plate 10, a top base plate 11, fixed insert rods 12, a movable base plate 13, fixed springs 14, and contact rollers 15. The bottom support plate 10 is fixedly installed at the lower end of the square rod 9, and the top base plate 11 is fixedly installed at the upper end of the square rod 9. Two fixed insert rods 12 are symmetrically fixedly installed at the lower end of the top base plate 11. The movable base plate 13 is slidably mounted on the square rod 9, and the fixed springs 14 are fixedly installed at the lower end of the movable base plate 13. Four contact rollers 15 are rotatably mounted within the movable base plate 13. When monitoring the foundation pit, the fixed support 1 can be fixedly installed inside the pit, simultaneously allowing the laser displacement sensor 3 to... The laser displacement sensor 3 is oriented towards the part of the foundation pit that needs to be monitored, thereby enabling real-time monitoring of the foundation pit using the laser displacement sensor 3. After the fixed bracket 1 is installed and fixed, the position of the laser displacement sensor 3 can be adjusted according to the changes in the required monitoring point. The method is as follows: first, lift the laser displacement sensor 3, the square rod 9, the bottom support plate 10, the top base plate 11, and the fixed insertion rod 12 upwards, so that the fixed insertion rod 12 moves out of the fixed hole 8. At this time, the fixed spring 14 will be compressed. Then, the mounting bracket 2 and the laser displacement sensor 3 can be moved on the mounting base plate 4 to adjust the position of the laser displacement sensor 3. When the position of the laser displacement sensor 3 is appropriate, the laser displacement sensor 3 is released. Finally, under the elastic force of the fixed spring 14, the fixed insertion rod 12 is inserted into the corresponding fixed hole 8.

[0023] Ultimately, by setting up a foundation pit monitoring device consisting of a fixed support 1, an installation support 2, and a laser displacement sensor 3, the foundation pit can be monitored in real time. This allows for the timely detection of abnormalities such as deformation, tilting, and cracking of the foundation pit, preventing accidents such as collapses, and preventing damage to surrounding roads, bridges, pipelines, and other facilities during foundation pit construction, thus ensuring the safety of construction workers. By setting up the installation support 2 and mounting the laser displacement sensor 3 on it, the position of the laser displacement sensor 3 can be easily adjusted according to the monitoring needs of the foundation pit, making the foundation pit monitoring device highly adaptable.

[0024] Specifically, the fixed bracket 1 consists of a mounting base plate 4, a support frame 5, and a fixed base plate 6. There are two support frames 5, which are symmetrically fixedly installed at the lower end of the mounting base plate 4. The fixed base plate 6 is fixedly installed at the lower end of the two support frames 5. The mounting base plate 4 has a guide rail groove 7, and several fixing holes 8 are symmetrically opened on both sides of the guide rail groove 7. The guide rail groove 7 and the fixing holes 8 pass through the mounting base plate 4 vertically. In use, bolts can be used to pass through the fixed base plate 6 to fix the fixed base plate 6 in the pit.

[0025] Specifically, the square rod 9 on the mounting bracket 2 is slidably installed in the guide rail groove 7. The top base plate 11 is located above the mounting base 4, and the bottom support plate 10 is located below the mounting base 4. The fixing rod 12 is inserted into the fixing hole 8. The movable base plate 13 on the mounting bracket 2 has four roller grooves 16 symmetrically opened. A square hole 17 is opened on the movable base plate 13 and between the four roller grooves 16. The movable base plate 13 slides up and down on the square rod 9 through the square hole 17. The contact roller 15 is rotatably installed in the roller groove 16. The fixing spring 14 is sleeved on the square rod 9. The movable base plate 13, the fixing spring 14, and the contact roller 15 are all located below the mounting base 4. Under the elastic force of the fixing spring 14, the contact roller 15 contacts the lower end of the mounting base 4. When it is necessary to adjust the laser displacement sensor 3 on the mounting base... When positioning the laser displacement sensor 3 on the mounting plate 4, the fixation of the laser displacement sensor 3 and the mounting bracket 2 must first be released. The method is to simply pull the laser displacement sensor 3, the square rod 9, the bottom support plate 10, the top base plate 11, and the fixing rod 12 upwards, so that the fixing rod 12 moves out of the fixing hole 8. At this time, the fixation of the laser displacement sensor 3 and the mounting bracket 2 is released. Then, the laser displacement sensor 3 and the mounting bracket 2 can be moved on the mounting base plate 4. During this process, the contact roller 15 will generate friction and rotate with the mounting base plate 4. When the position of the laser displacement sensor 3 is appropriate, simply release the laser displacement sensor 3 and let the fixing rod 12 be inserted into the fixing hole 8 under the elastic force of the fixing spring 14. At this time, the laser displacement sensor 3 and the mounting bracket 2 are fixed on the mounting base plate 4.

[0026] Specifically, the laser displacement sensor 3 is fixedly installed on the upper end of the top substrate 11. The laser displacement sensor 3 emits a high-precision, monochromatic, coherent laser beam through its internal laser diode, which illuminates the part of the pit that needs to be monitored. When the laser beam encounters the surface of the object, it will be reflected. At this time, the receiving unit inside the laser displacement sensor 3 receives the reflected light. By calculating the incident angle of the reflected light or the change in the position of the light spot on the detector, and combining the triangular geometric relationship between the laser emission point, the reflection point and the receiving point of the laser displacement sensor 3, the sensor can accurately calculate the distance or displacement between the object and the sensor.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for monitoring a building construction excavation, characterised in that: The utility model provides a kind of laser displacement sensor fixing device, including fixed support (1), several mounting brackets (2) are installed on the fixed support (1), laser displacement sensor (3) is fixedly installed on the mounting bracket (2), the mounting bracket (2) is composed of square bar (9), bottom supporting plate (10), top base plate (11), fixed insertion rod (12), mobile base plate (13), fixed spring (14) and contact roller (15), the bottom supporting plate (10) is fixedly installed in the lower end of square bar (9), the top base plate (11) is fixedly installed in the upper end of square bar (9), the fixed insertion rod (12) has two and is symmetrically fixedly installed in the lower end of top base plate (11), the mobile base plate (13) is slidably sleeved on square bar (9), the fixed spring (14) is fixedly installed in the lower end of mobile base plate (13), and the contact roller (15) has four and is rotatably installed in mobile base plate (13).

2. The building engineering foundation pit monitoring device according to claim 1, characterized in that: The fixed support (1) is composed of mounting base plate (4), support frame (5) and fixed bottom plate (6), the support frame (5) has two and is symmetrically fixedly installed in the lower end of mounting base plate (4), and the fixed bottom plate (6) is fixedly installed in the lower end of two support frames (5).

3. A device for monitoring a building site excavation according to claim 2, characterised in that: The mounting base plate (4) is provided with a guide rail groove (7), and a plurality of fixed holes (8) are symmetrically provided on the mounting base plate (4) on both sides of the guide rail groove (7), and the guide rail groove (7) and the fixed hole (8) penetrate the mounting base plate (4) up and down.

4. The building engineering foundation pit monitoring device according to claim 3, characterized in that: The square bar (9) on the mounting bracket (2) is slidably installed in the guide rail groove (7), the top base plate (11) is located above the mounting base plate (4), the bottom supporting plate (10) is located below the mounting base plate (4), and the fixed insertion rod (12) is inserted into the fixed hole (8).

5. A device for monitoring a building site excavation according to claim 4, characterised in that: The mobile base plate (13) on the mounting bracket (2) is symmetrically provided with four roller grooves (16) thereon, and a square hole (17) is provided between the four roller grooves (16) on the mobile base plate (13), the mobile base plate (13) is slidably sleeved on the square bar (9) through the square hole (17), the contact roller (15) is rotatably installed in the roller groove (16), the fixed spring (14) is sleeved on the square bar (9), and the mobile base plate (13), the fixed spring (14) and the contact roller (15) are all located below the mounting base plate (4), and the contact roller (15) is in contact with the lower end of the mounting base plate (4) under the elastic force of the fixed spring (14).

6. A device for monitoring a building site excavation according to claim 5, characterised in that: The laser displacement sensor (3) is fixedly installed in the upper end of the top base plate (11).

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