Foundation pit support deviation monitoring device

Abstract

The utility model belongs to the technical field of foundation pit supporting and protecting monitoring equipment, and relates to a foundation pit supporting and protecting deviation monitoring device which comprises a bottom plate, four fixing seats are fixedly connected to the upper surface of the bottom plate, mounting grooves are formed in the fixing seats, sliding rods are arranged in the mounting grooves, and rubber plugs are fixedly connected to the lower ends of the sliding rods. The two sides of the rubber plug are slidably connected with the inner wall of the mounting groove, a pressure sensor is fixedly connected to the bottom of the mounting groove, an air inlet is formed in one side of the mounting groove, an air pipe is connected to the air inlet and connected with an air pump, the air pump is fixedly connected to the bottom plate, a control panel and an alarm are fixedly connected to the bottom plate, and the control panel is connected with the pressure sensor and the alarm. The upper end of the sliding rod is fixedly connected with a transverse plate; the pressure sensor is arranged to sense the gas pressure change in the mounting groove, so that whether the supporting structure deviates or not can be monitored, the monitoring accuracy and sensitivity are greatly improved, the foundation pit monitoring device can adapt to foundation pits in different environments, and the applicability of the foundation pit monitoring device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support monitoring equipment, in particular to a foundation pit support deviation monitoring device. Background Art

[0002] Foundation pit support is a measure of support, reinforcement and protection for the side walls of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. With the needs of urbanization, subways, high-rise buildings and other projects are being vigorously built, and the construction of these projects mostly requires foundation pit excavation in densely populated urban areas. During the excavation of deep foundation pits, the pit walls will be subjected to pressure and will produce large displacement deformation into the pit, posing a hidden danger to the safety of the foundation pit project and surrounding structures. Therefore, periodic safety monitoring of the foundation pit status is particularly important.

[0003] The existing application number is CN202311671033.4, which is a subway foundation pit support deviation monitoring device and early warning method. The device is fixed to the ground and the support structure by setting fixing column screws and chassis screws on the chassis. However, the conditions of each foundation pit are different, and the height of the support structure during support is also different, resulting in poor fixation during fixation. This makes the structure have certain limitations and cannot adapt to complex foundation pit environments. Utility Model Content

[0004] The purpose of the utility model is to provide a foundation pit support deviation monitoring device, which solves the problem of the subway foundation pit support deviation monitoring device and early warning method with application number CN202311671033.4 mentioned in the above background technology. The device as a whole is fixed to the ground and the support structure by setting fixing column screws and chassis screws on the chassis. However, the conditions of each foundation pit are different, and the height of the support structure during support is also different, which leads to that the device cannot be fixed well during fixation, so that the structure has certain limitations and cannot adapt to the complex foundation pit environment.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a foundation pit support deviation monitoring device, comprising a base plate, the upper surface of the base plate is fixedly connected to four fixing seats symmetrically arranged about the base plate, the upper surface of the fixing seat is downwardly provided with a mounting groove, a sliding rod is arranged in the mounting groove, the lower end of the sliding rod is located inside the mounting groove, and the upper end of the sliding rod is located outside the fixing seat, the lower end of the sliding rod is fixedly connected to a rubber plug, the two sides of the rubber plug are slidably connected to the inner wall of the mounting groove, the bottom of the mounting groove is fixedly connected to a pressure sensor, one side of the mounting groove between the rubber plug and the pressure sensor is provided with an air inlet, the air inlet is connected to an air pipe, the air pipe is connected to an air pump, the air pump is fixedly connected to the base plate, the base plate is fixedly connected to a control panel and an alarm, the control panel is connected to the pressure sensor and the alarm, and the upper end of the sliding rod is fixedly connected to a cross plate.

[0006] As a preferred solution, a limiting block is fixedly connected to the notch of the installation slot, and the sliding rod is slidably connected to the limiting block.

[0007] As a preferred solution, a sealing process is performed between the sliding rod and the limiting block.

[0008] As a preferred solution, a sealing treatment is performed between the air pipe and the air inlet.

[0009] As a preferred solution, laser transmitters are fixedly connected to the lower surfaces of both ends of the horizontal plate, and laser receivers corresponding to the laser transmitters are fixedly connected to the bottom plate, and the laser receivers are connected to the control board.

[0010] As a preferred solution, four wheel grooves symmetrically arranged with respect to the bottom plate are formed on the lower side of the bottom plate, and movable wheels are arranged in the wheel grooves.

[0011] As a preferred solution, a plurality of mounting holes are provided on the bottom plate, fixing pins are provided in the mounting holes, and the lower ends of the fixing pins are provided in a cone shape.

[0012] As a preferred solution, a positioning groove is provided on the transverse plate.

[0013] Compared with the prior art, the beneficial effects of the utility model include:

[0014] The utility model sets a pressure sensor to sense the change of gas pressure in the installation groove, so as to monitor whether the supporting structure is offset, which greatly improves the accuracy and sensitivity of monitoring, can adapt to foundation pits in different environments, and improves its applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the specific structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0018] The following will be combined with the instructions attached Figure 1-2 And specific implementation methods are used to describe the above technical solutions in detail:

[0019] The utility model provides a foundation pit support deviation monitoring device, including a base plate 1, the upper surface of the base plate 1 is fixedly connected with four fixing seats 2 symmetrically arranged about the base plate 1, the upper surface of the fixing seat 2 is downwardly provided with a mounting groove 3, a sliding rod 4 is arranged in the mounting groove 3, the lower end of the sliding rod 4 is located inside the mounting groove 3, and the upper end thereof is located outside the fixing seat 2, the lower end of the sliding rod 4 is fixedly connected with a rubber plug 5, both sides of the rubber plug 5 are slidably connected to the inner wall of the mounting groove 3, a pressure sensor 6 is fixedly connected to the bottom of the mounting groove 3, an air inlet 7 is opened on one side of the mounting groove 3 between the rubber plug 5 and the pressure sensor 6, an air pipe 8 is connected at the air inlet 7, the air pipe 8 is connected with an air pump 9, the air pump 9 is fixedly connected to the base plate 1, a control panel 10 and an alarm 11 are fixedly connected to the base plate 1, the control panel 10 is connected to the pressure sensor 6 and the alarm 11, and the upper end of the sliding rod 4 is fixedly connected with a cross plate 12. When in use, after the foundation pit supporting structure is installed, the device is moved as a whole to just below the supporting plate in the supporting structure, and then the air pump 9 is started, so that the air pump 9 pumps air into the installation groove 3 through the air pipe 8. Under the action of air pressure, the sliding rod 4 will slide upward, thereby driving the cross plate 12 to move. When the cross plate 12 contacts the supporting plate, the air pump 9 stops working, thereby monitoring the deviation of the foundation pit supporting structure. When the supporting structure deviates, its supporting plate will tilt to one side, thereby causing the cross plate 12 to press down on the inclined side, causing the sliding rod 4 on the inclined side to move into the sliding groove, driving the rubber plug 5 to move downward, so that the space between the installation groove 3 and the rubber plug 5 on this side is reduced, resulting in an increase in the air pressure therein. As the air pressure rises, the pressure rises, and the pressure sensor 6 senses the pressure rise and transmits the signal to the control board 10. After receiving the signal, the control board 10 controls the alarm 11 to alarm, thereby serving as a warning. Preferably, the pressure sensor 6 is of wireless transmission type.

[0020] In order to play a limiting role, as a preferred solution, a limiting block 13 is fixedly connected to the notch of the installation groove 3, and the sliding rod 4 is slidably connected to the limiting block 13.

[0021] In order to avoid air leakage between the sliding rod 4 and the limit block 13, as a preferred solution, a sealing treatment is performed between the sliding rod 4 and the limit block 13. Preferably, a sealing ring can be set at the inner circle of the limit block 13. Similarly, a sealing treatment is performed between the air pipe 8 and the air inlet 7.

[0022] In order to further improve the monitoring effect, sensitivity and accuracy of monitoring, as a preferred solution, the lower surfaces of both ends of the horizontal plate 12 are respectively fixedly connected with laser emitters 14, and the bottom plate 1 is fixedly connected with a laser receiver 15 corresponding to the laser emitter 14, and the laser receiver 15 is connected to the control board 10. When working, the laser receiver 15 can receive the laser emitted by the laser emitter 14. When the support plate is offset, the laser receiver 15 cannot receive the laser, and at this time, the signal is transmitted to the control board 10, so that the alarm 11 works.

[0023] In order to facilitate the overall movement of the device, as a preferred solution, four wheel grooves 16 symmetrically arranged about the bottom plate 1 are opened on the lower side of the bottom plate 1, and moving wheels 17 are arranged in the wheel grooves 16. As a preferred solution, the moving wheels 17 have a built-in braking function.

[0024] In order to fix the device as a whole under the support structure to prevent it from moving, as a preferred solution, a plurality of mounting holes 18 are provided on the bottom plate 1, and a fixing pin 19 is provided in the mounting hole 18, and the lower end of the fixing pin 19 is provided in a cone shape. After the device as a whole is moved under the support plate by the moving wheel 17, the fixing pin 19 is inserted into the mounting hole 18 and the fixing pin 19 is inserted into the ground to complete the fixation.

[0025] In order to achieve the positioning function, as a preferred solution, a positioning groove 20 is provided on the transverse plate 12 .

[0026] Preferably, the working principle and structure of the pressure sensor, control panel, alarm, laser transmitter and laser receiver are mature existing technologies, so they are not described here in detail, and their specifications and models can be selected according to actual conditions.

[0027] Preferably, the electronic components can be connected to a municipal circuit or via an external generator.

[0028] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0029] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A foundation pit support deviation monitoring device, comprising a bottom plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected to four fixing seats (2) symmetrically arranged with respect to the bottom plate (1); the upper surface of the fixing seat (2) is provided with a mounting groove (3) extending downwardly; a sliding rod (4) is arranged in the mounting groove (3); the lower end of the sliding rod (4) is located inside the mounting groove (3) and the upper end of the sliding rod (4) is located outside the fixing seat (2); the lower end of the sliding rod (4) is fixedly connected to a rubber plug (5); the two sides of the rubber plug (5) are slidably connected to the inner wall of the mounting groove (3); the bottom of the mounting groove (3) is fixedly connected to a pressure-sensitive adhesive. A force sensor (6), an air inlet (7) is provided on one side of the mounting groove (3) between the rubber stopper (5) and the pressure sensor (6), an air pipe (8) is connected to the air inlet (7), the air pipe (8) is connected to an air pump (9), the air pump (9) is fixedly connected to a base plate (1), a control panel (10) and an alarm (11) are fixedly connected to the base plate (1), the control panel (10) is connected to the pressure sensor (6) and the alarm (11), and a transverse plate (12) is fixedly connected to the upper end of the sliding rod (4).

2. A foundation pit support deviation monitoring device according to claim 1, characterized in that: A limiting block (13) is fixedly connected to the notch of the installation slot (3), and the sliding rod (4) is slidably connected to the limiting block (13).

3. A foundation pit support deviation monitoring device according to claim 2, characterized in that: A sealing process is performed between the sliding rod (4) and the limiting block (13).

4. The foundation pit support deviation monitoring device according to claim 1 is characterized in that: A sealing process is performed between the air pipe (8) and the air inlet (7).

5. The foundation pit support deviation monitoring device according to claim 1 is characterized in that: Laser emitters (14) are fixedly connected to the lower surfaces of both ends of the transverse plate (12), and laser receivers (15) corresponding to the laser emitters (14) are fixedly connected to the bottom plate (1), and the laser receivers (15) are connected to the control board (10).

6. The foundation pit support deviation monitoring device according to claim 1, characterized in that: The bottom side of the bottom plate (1) is provided with four wheel grooves (16) symmetrically arranged with respect to the bottom plate (1), and moving wheels (17) are arranged in the wheel grooves (16).

7. The foundation pit support deviation monitoring device according to claim 1 is characterized in that: The bottom plate (1) is provided with a plurality of mounting holes (18), and a fixing pin (19) is arranged in the mounting hole (18), and the lower end of the fixing pin (19) is arranged in a cone shape.

8. The foundation pit support deviation monitoring device according to claim 1, characterized in that: The transverse plate (12) is provided with a positioning groove (20).

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