A foundation pit support and protection device

Abstract

The utility model discloses a foundation pit support and protection device, comprising a bottom plate and a top plate, wherein the outer surface of the bottom plate is rotatably connected to the outer surface of the top plate. When the soil is slightly deformed due to the erosion of groundwater, the top plate can be pushed, and the laser transmitter will follow the movement of the top plate, so that the laser receiver cannot receive the laser emitted by the laser transmitter, and then warn the on-duty construction worker, and an electric plate is fixedly installed on the top of the sliding rod, and a magnetic ring is installed on the inner wall of the sliding sleeve. When the electric plate moves in the magnetic ring, current can be generated, and the current is gradually increased or weakened according to the amplitude of the movement of the sliding rod, so that the time and amplitude of the foundation pit deformation can be accurately collected, and the time and area of ​​the collapse can be more conveniently predicted based on these data, which solves the problem that the existing equipment can warn that the soil layer moves, but cannot calculate the amplitude and time of the soil layer movement.

Description

Technical Field

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

[0002] A foundation pit refers to the space below the ground that is excavated during the construction of building foundations or underground buildings (such as subways and basements).

[0003] The foundation pit project consists of three main parts: support structure, groundwater control and environmental protection. The support structure includes support and reinforcement. Support is usually passive support, that is, the soil is used as a load, and the support structure is regarded as a retaining structure; while reinforcement is an active support form, which uses grouting, tamping, soil nailing and other methods to work with the soil to form a retaining wall-like structure within the reinforcement range to maintain the stability of the slope. The purpose of the foundation pit project is to ensure the stability and safety of the foundation pit during construction and use, and to protect the environment around the foundation pit. Therefore, during the foundation pit construction process, a series of measures need to be taken to ensure safety and environmental stability, such as formulating a monitoring plan, carefully organizing and implementing monitoring, and considering various factors (such as the foundation pit engineering design plan, the engineering geology and hydrogeology conditions of the construction site, the surrounding environmental conditions, the construction plan, etc.) to formulate a suitable construction plan.

[0004] Conventional foundation pit support and protection are mainly aimed at foundation pits with different angles or right angles. The biggest factor for foundation pit collapse is groundwater. Groundwater can moisten the soil and reduce the cohesion between the soil, which can easily lead to landslides in the soil layer. Before the foundation pit wall collapses, a slight bulge will appear. However, the existing equipment is only equipped with a laser rangefinder, which can only warn of the movement of the soil layer, and cannot calculate the amplitude and time of the soil movement. Therefore, a device is needed that can inform the surrounding workers of the exact collapse range or the degree of soil deformation before the complete collapse. In order to solve this technical problem, the utility model proposes a foundation pit support and protection device. Utility Model Content

[0005] The main purpose of the utility model is to provide a foundation pit support and protection device, which can effectively solve the problems mentioned in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A foundation pit support and protection device comprises a bottom plate and a top plate, wherein the outer surface of the bottom plate is rotatably connected to the outer surface of the top plate, a laser transmitter is arranged on the outer surface of the top plate, a laser receiver is arranged outside the bottom plate, a sliding rod is rotatably connected to the outer surface of the bottom plate, a sliding sleeve is arranged outside the top plate, and the inner wall of the sliding sleeve is slidably connected to the outer surface of the sliding rod.

[0008] Preferably, a rotating seat is fixedly mounted on the outer surface of the base plate, a sliding arm is rotatably connected to the outer surface of the rotating seat, a hydraulic rod is fixedly mounted on the outer surface of the sliding arm, and a telescopic arm is slidably connected to the inner wall of the sliding arm.

[0009] Preferably, the outer surface of the telescopic arm is fixedly mounted to the output end of the hydraulic rod, the outer surface of the telescopic arm is rotatably connected to the top end of the sliding sleeve, and the outer surface of the telescopic arm is rotatably connected to a directional plate.

[0010] Preferably, an oriented rail is fixedly mounted on the outer surface of the top plate, a positioning hole is opened on the inner side of the oriented rail, and the outer surface of the oriented plate is slidably connected to the oriented rail and the outer surface of the top plate.

[0011] Preferably, an inner wall of the directional plate is slidably connected to an directional rod, an outer surface of the directional rod is slidably connected to an inner wall of the positioning hole, and a nut is threadedly connected to the outer surface of the directional rod.

[0012] Preferably, protective covers are fixedly mounted on the outer surfaces of the telescopic arm and the sliding arm, and the inner wall of the protective cover is slidably connected to the outer surface of the hydraulic rod.

[0013] Preferably, a guardrail is fixedly mounted on the outer surface of the base plate, a warning tape is fixedly mounted on the outer surface of the guardrail, and a warning light is mounted on the outer surface of the guardrail.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, through the cooperation between the bottom plate, the bottom plate, the laser transmitter, the laser receiver, the slide rod and the slide sleeve, when the device needs to be used, the bottom plate is closely attached to the ground, and the top plate is closely attached to the vertical wall of the foundation pit. When the soil is slightly deformed due to the erosion of groundwater, the top plate can be pushed, resulting in an angle between the top plate and the bottom plate being less than ninety degrees. At this time, the laser transmitter will follow the movement of the top plate, so that the laser receiver cannot receive the laser emitted by the Jia Guang transmitter, and then warn the on-duty construction worker. In addition, an electric plate is fixedly installed on the top of the slide rod, and a magnetic ring is installed on the inner wall of the slide sleeve. When the electric plate moves in the magnetic ring, current can be generated, and the current is gradually increased or weakened according to the amplitude of the movement of the slide rod. At this time, the strength of the current can be detected by the controller to determine the amplitude of the soil deformation, so that the time and amplitude of the foundation pit deformation can be accurately collected, and the time and area of ​​the collapse can be more conveniently predicted based on these data, solving the problem that the existing equipment can only warn of the movement of the soil layer, but cannot calculate the amplitude and time of the soil layer movement.

[0016] In the utility model, through the cooperation between the guardrail, the warning light and the laser receiver, when the laser receiver cannot receive the signal emitted by the laser transmitter, the warning light can be powered on immediately, the surrounding construction workers can see the warning light, and can know the area that is about to collapse at the first time according to the number of flashes of the warning light. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a foundation pit support and protection device of the utility model;

[0018] Figure 2 It is a side perspective schematic diagram of a foundation pit support and protection device of the utility model;

[0019] Figure 3 It is a transmission schematic diagram of the sliding arm and telescopic arm of a foundation pit support and protection device of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the directional plate and directional rail of a foundation pit support and protection device of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the internal plane of a sliding sleeve of a foundation pit support and protection device.

[0022] In the figure: 1. bottom plate; 2. top plate; 3. laser transmitter; 4. laser receiver; 5. slide bar; 6. slide sleeve; 7. swivel seat; 8. slide arm; 9. hydraulic rod; 10. telescopic arm; 11. directional plate; 12. directional rail; 13. positioning hole; 14. directional rod; 15. protective cover; 16. guardrail; 17. warning light. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-5As shown, a foundation pit support and protection device includes a bottom plate 1 and a top plate 2, the outer surface of the bottom plate 1 is rotatably connected to the outer surface of the top plate 2, a laser emitter 3 is arranged on the outer surface of the top plate 2, a laser receiver 4 is arranged on the outside of the bottom plate 1, a sliding rod 5 is rotatably connected to the outer surface of the bottom plate 1, a sliding sleeve 6 is arranged on the outside of the top plate 2, and the inner wall of the sliding sleeve 6 is slidably connected to the outer surface of the sliding rod 5. When the device needs to be used, the bottom plate 1 is tightly attached to the ground, and the top plate 2 is tightly attached to the vertical wall of the foundation pit. When the soil is slightly deformed due to the erosion of groundwater, the top plate 2 can be pushed, resulting in an angle between the top plate 2 and the bottom plate 1 being less than ninety degrees. At this time, the laser emitter 3 will follow the top plate 2 moves, so that the laser receiver 4 cannot receive the laser emitted by Jia Guang transmitter, and then warns the on-duty construction worker, and an electric plate is fixedly installed on the top of the slide bar 5, and a magnetic ring is installed on the inner wall of the sliding sleeve 6. The electric plate can generate current when it moves in the magnetic ring, and the current is gradually increased or weakened according to the amplitude of the movement of the slide bar 5. At this time, the strength of the current can be detected by the controller to determine the amplitude of the soil deformation, so as to accurately collect the time and amplitude of the foundation pit deformation, and can more conveniently predict the time and area of ​​the collapse based on these data, which solves the problem that the existing equipment can only warn of the movement of the soil layer, but cannot measure the amplitude and time of the soil layer movement.

[0025] A rotating seat 7 is fixedly installed on the outer surface of the base plate 1, and a sliding arm 8 is rotatably connected to the outer surface of the rotating seat 7. A hydraulic rod 9 is fixedly installed on the outer surface of the sliding arm 8. A telescopic arm 10 is slidably connected to the inner wall of the sliding arm 8. The sliding arm 8 can rotate with the connection point with the rotating seat 7 as the center of the circle. The hydraulic rod 9 can push the telescopic arm 10 so that the overall length of the telescopic arm 10 and the sliding arm 8 can be extended or reduced.

[0026] The outer surface of the telescopic arm 10 is fixedly installed with the output end of the hydraulic rod 9, and the outer surface of the telescopic arm 10 is rotatably connected with the top of the sliding sleeve 6. The outer surface of the telescopic arm 10 is rotatably connected with the directional plate 11. When the hydraulic rod 9 pushes the telescopic arm 10, the telescopic arm 10 can push the directional plate 11 to move in the direction in which the hydraulic rod 9 extends. In addition, the directional plate 11 can rotate freely, so that the directional plate 11 and the top plate 2 can always remain parallel to each other.

[0027] An oriented rail 12 is fixedly installed on the outer surface of the top plate 2, and a positioning hole 13 is opened on the inner side of the oriented rail 12. The outer surface of the oriented plate 11 is slidably connected to the oriented rail 12 and the outer surface of the top plate 2. The oriented rail 12 can provide an oriented function for the oriented plate 11, forcing the oriented plate 11 to move only in the direction given by the oriented rail 12 when moving. At the same time, it can also ensure that the oriented plate 11 always remains parallel to the top plate 2 during the movement.

[0028] The inner wall of the directional plate 11 is slidably connected with a directional rod 14, and the outer surface of the directional rod 14 is slidably connected to the inner wall of the positioning hole 13. The outer surface of the directional rod 14 is threadedly connected with a nut. The directional rod 14 can be directly inserted into the positioning hole 13 and the directional plate 11. The nut can fix the directional rod 14 to the directional rail 12, so that the directional plate 11 can be fixed at a certain position of the directional rail 12. The normal action force of the hydraulic rod 9 depends on multiple factors, including the depth of the foundation pit, soil conditions, groundwater level, construction methods and adjacent buildings. Therefore, when the thrust of soil deformation is greater than the normal normal action force of the hydraulic rod 9, the top plate 2 can be pushed. The inclination of the top plate 2 can drive the positioning plate, telescopic arm 10 and sliding arm 8, so that the deformation degree and accurate time of the soil layer can be accurately predicted when the soil layer deformation exceeds the overall support equipment.

[0029] A protective cover 15 is fixedly installed on the outer surfaces of the telescopic arm 10 and the sliding arm 8. The inner wall of the protective cover 15 is slidably connected to the outer surface of the hydraulic rod 9. The protective cover 15 can increase the contact area between the telescopic arm 10, the sliding arm 8 and the hydraulic rod 9, thereby reducing the deformation of the hydraulic rod 9 due to continuous high pressure.

[0030] A guardrail 16 is fixedly installed on the outer surface of the base plate 1, a warning tape is fixedly installed on the outer surface of the guardrail 16, and a warning light 17 is installed on the outer surface of the guardrail 16. When the laser receiver 4 cannot receive the signal emitted by the laser transmitter 3, the warning light 17 can be powered on immediately, and the surrounding construction workers can see the warning light 17, and can know the area that is about to collapse at the first time according to the number of flashes of the warning light 17.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A foundation pit support and protection device, characterized in that: The invention comprises a bottom plate (1) and a top plate (2), wherein the outer surface of the bottom plate (1) is rotatably connected to the outer surface of the top plate (2), a laser emitter (3) is arranged on the outer surface of the top plate (2), a laser receiver (4) is arranged outside the bottom plate (1), the outer surface of the bottom plate (1) is rotatably connected to a sliding rod (5), a sliding sleeve (6) is arranged outside the top plate (2), and the inner wall of the sliding sleeve (6) is slidably connected to the outer surface of the sliding rod (5).

2. A foundation pit support and protection device according to claim 1, characterized in that: A rotating seat (7) is fixedly mounted on the outer surface of the base plate (1), a sliding arm (8) is rotatably connected to the outer surface of the rotating seat (7), a hydraulic rod (9) is fixedly mounted on the outer surface of the sliding arm (8), and a telescopic arm (10) is slidably connected to the inner wall of the sliding arm (8).

3. A foundation pit support and protection device according to claim 2, characterized in that: The outer surface of the telescopic arm (10) is fixedly mounted on the output end of the hydraulic rod (9), the outer surface of the telescopic arm (10) is rotatably connected to the top end of the sliding sleeve (6), and the outer surface of the telescopic arm (10) is rotatably connected to a directional plate (11).

4. A foundation pit support and protection device according to claim 3, characterized in that: An oriented rail (12) is fixedly mounted on the outer surface of the top plate (2), a positioning hole (13) is provided on the inner side of the oriented rail (12), and the outer surface of the oriented plate (11) is slidably connected to the oriented rail (12) and the outer surface of the top plate (2).

5. A foundation pit support and protection device according to claim 4, characterized in that: The inner wall of the directional plate (11) is slidably connected to an directional rod (14), the outer surface of the directional rod (14) is slidably connected to the inner wall of the positioning hole (13), and the outer surface of the directional rod (14) is threadedly connected to a nut.

6. A foundation pit support and protection device according to claim 3, characterized in that: A protective cover (15) is fixedly mounted on the outer surfaces of the telescopic arm (10) and the sliding arm (8), and the inner wall of the protective cover (15) is slidably connected to the outer surface of the hydraulic rod (9).

7. A foundation pit support and protection device according to claim 1, characterized in that: A guardrail (16) is fixedly mounted on the outer surface of the base plate (1), a warning tape is fixedly mounted on the outer surface of the guardrail (16), and a warning light (17) is mounted on the outer surface of the guardrail (16).

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