Protective fence for building foundation pit

Abstract

The utility model relates to the technical field of building protection, and discloses a protective fence for a building foundation pit, which comprises two supporting columns, two first protective fences are fixedly arranged on one side of one supporting column, two second protective fences are fixedly arranged on one side of the other supporting column, and the two first protective fences are fixedly arranged on the other side of the other supporting column. One side of each second guardrail is provided with an extension assembly for extending the length of the whole guardrail; by arranging the extending assembly, the control assembly and the shortening assembly, when the two supporting columns move due to vibration, the shortening assembly can pull the two supporting columns to be close to each other, the situation that the moving distance of the supporting columns is too large is avoided, and the two supporting columns can be pulled back to the original positions again by the distance separated from each other; the extending assemblies can automatically extend the lengths of the guardrails when the two supporting columns pull the two guardrails to move, and the situation that due to the fixed length of the guardrails, the two supporting columns move due to vibration, and the gap between the whole guardrail and another whole guardrail is enlarged is avoided.

Description

Technical Field

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

[0002] The foundation pit is an earth pit excavated at the foundation design position according to the base elevation and foundation plane dimensions. During the foundation pit construction process, for safety reasons, people need to set up guardrails around the foundation pit to prevent people from accidentally falling into the foundation pit and causing safety accidents. Since guardrails are very important, it is also necessary to optimize the use of guardrails.

[0003] For example, a Chinese utility model patent with announcement number CN220014545U discloses a foundation pit guardrail. Although the above-mentioned prior art can limit each outer frame through designed fixed plates, sliding holes, reinforcement rods, mounting blocks and other structures, thereby improving the overall stability of the device and avoiding tipping over during use, the ground of the construction site will produce a lot of vibrations during construction, and the area around the building foundation pit will also vibrate. The guardrails used for the foundation pit will loosen and shift after long-term vibration. When multiple guardrails are displaced, gaps will appear between the guardrails, and the desired protective effect will not be achieved. Therefore, a guardrail for the building foundation pit is designed that will automatically extend when displaced. Utility Model Content

[0004] In order to solve the technical problem that guardrails for building foundation pits may be displaced due to vibration, resulting in gaps between the guardrails, the utility model provides a guardrail for building foundation pits.

[0005] The utility model is implemented by the following technical scheme: a guardrail for a building foundation pit, comprising two support columns, one side of one of the support columns having two first guardrails fixedly mounted thereon, and one side of the other support column having two second guardrails fixedly mounted thereon, one side of each of the second guardrails being provided with an extension component for extending the length of the overall guardrail, one side of one of the extension components being provided with a control component for controlling the extension distance of the extension component, and both sides of one of the first guardrails being provided with shortening components for reducing the length of the overall guardrail.

[0006] Through the above technical solution, when vibration causes the guardrail to move as a whole, the extension component will extend the length of the guardrail during movement to prevent the support column from moving, and the control component can also control the extension distance.

[0007] As a further improvement of the above solution, an extension groove is provided on one side of each of the first guardrails, and an adjustment opening penetrating the first guardrail is provided on one side of the inner wall of each extension groove. The extension assembly includes an extension block fixedly installed at one end of the second guardrail and an adjustment block fixedly installed on one side of each extension block. One side of each adjustment block passes through the adjacent adjustment opening.

[0008] Through the above technical solution, when the support column moves, it will drive the first guardrail or the second guardrail, and the extension block will extend the distance between the two guardrails.

[0009] As a further improvement of the above solution, the control assembly includes an adjustment plate fixedly installed on one side of the first guardrail and arranged in a "C" shape, a plurality of control blocks arranged inside the adjustment plate, and a pull plate fixedly installed on one side of each control block. One side of each pull plate penetrates the adjustment plate, and a fixed block is fixedly installed on one side of each adjustment plate.

[0010] Through the above technical solution, pulling the pull plate will adjust the position of the control block, so that the position of the adjustment block can be restricted and the extension distance can be controlled.

[0011] As a further improvement of the above solution, a plurality of sliding grooves are provided on both sides of the inner wall of the adjustment plate, and a limiting plate is fixedly installed on both sides of the control block. One side of each limiting plate extends into the adjacent sliding groove.

[0012] Through the above technical solution, when the control block moves and blocks, the limiting plate will play a limiting role to prevent the control block from being squeezed and unable to be limited.

[0013] As a further improvement of the above solution, a plurality of moving grooves are provided on one side of the adjustment plate, a top block is provided on one side of each pull plate, and a moving block sliding in the adjacent moving groove is fixedly installed on one side of each top block.

[0014] Through the above technical solution, when it is necessary to prevent the position of the control block from blocking the movement of the adjustment block, the fixed block can be lifted by using the top block.

[0015] As a further improvement of the above solution, the shortening assembly includes a first fixed plate fixedly installed on one side of the first guardrail, a shortening rod arranged on one side of the first fixed plate, and a pushing spring sleeved on the shortening rod. One end of the shortening rod penetrates the first fixed plate and is fixedly installed with a second fixed plate. The second fixed plate is fixedly installed with the adjacent second guardrail. A limiting block is fixedly installed at the other end of the shortening rod, and one end of the pushing spring is fixedly installed with the adjacent limiting block and the other end is fixedly installed with the adjacent first fixed plate.

[0016] Through the above technical solution, when the two support columns move due to vibration, the push spring will push the first fixed plate to offset part of the moving force.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model provides an extension component, a control component and a shortening component. When two support columns move due to vibration, the shortening component will pull the two support columns together to avoid excessive movement of the support columns, and can also pull the two support columns back to their original positions. The extension component will automatically extend the length of the guardrail when the two support columns pull the two guardrails to move, to avoid a fixed guardrail length causing the two support columns to move due to vibration, thereby increasing the gap between the entire guardrail and another guardrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model with a shortened component;

[0021] Figure 3 It is a structural schematic diagram of the utility model with a control component.

[0022] Description of main symbols:

[0023] 1. Support column; 2. First guardrail; 3. Second guardrail; 401. Extension block; 402. Adjustment block; 501. Adjustment plate; 502. Control block; 503. Pull-out plate; 601. First fixed plate; 602. Shortening rod; 603. Push spring; 7. Fixed block; 8. Limiting plate; 9. Top block; 10. Moving block; 11. Second fixed plate. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] Please combine Figure 1-Figure 3 A guardrail for a construction foundation pit in this embodiment includes two support columns 1, two first guardrails 2 are fixedly installed on one side of one support column 1, and two second guardrails 3 are fixedly installed on one side of the other support column 1, and an extension component for extending the length of the overall guardrail is provided on one side of each second guardrail 3, and a control component for controlling the extension distance of the extension component is provided on one side of one extension component, and shortening components for reducing the length of the overall guardrail are provided on both sides of one of the first guardrails 2.

[0026] Combined Figure 2 , an extension groove is provided on one side of each first guardrail 2, and an adjustment opening penetrating the first guardrail 2 is provided on one side of the inner wall of each extension groove. The extension assembly includes an extension block 401 fixedly installed at one end of the second guardrail 3 and an adjustment block 402 fixedly installed on one side of each extension block 401. One side of each adjustment block 402 passes through the adjacent adjustment opening. When the support column 1 moves, it will drive the first guardrail 2 or the second guardrail 3, and the extension block 401 will extend the space between the two guardrails.

[0027] Combined Figure 1 and Figure 3 , the control assembly includes an adjustment plate 501 fixedly installed on one side of the first guardrail 2 and arranged in a "C" shape, a plurality of control blocks 502 arranged inside the adjustment plate 501, and a pull plate 503 fixedly installed on one side of each control block 502. One side of each pull plate 503 passes through the adjustment plate 501. A fixed block 7 is fixedly installed on one side of each adjustment plate 501. A plurality of sliding grooves are provided on both sides of the inner wall of the adjustment plate 501. Limiting plates 8 are fixedly installed on both sides of the control block 502. One side of each limiting plate 8 extends into the adjacent sliding groove. A plurality of moving grooves are provided on one side of the adjustment plate 501. A top block 9 is provided on one side of each pull plate 503. A moving block 10 sliding inside the adjacent moving groove is fixedly installed on one side of each top block 9. Pulling the pull plate 503 will adjust the position of the control block 502, so that the position of the adjustment block 402 can be restricted to control the extension distance.

[0028] Combined Figure 1 and Figure 2 , the shortening assembly includes a first fixing plate 601 fixedly installed on one side of the first guardrail 2, a shortening rod 602 arranged on one side of the first fixing plate 601, and a pushing spring 603 sleeved on the shortening rod 602. One end of the shortening rod 602 passes through the first fixing plate 601 and is fixedly installed with a second fixing plate 11. The second fixing plate 11 is fixedly installed with the adjacent second guardrail 3. A limiting block is fixedly installed at the other end of the shortening rod 602. One end of the pushing spring 603 is fixedly installed with the adjacent limiting block and the other end is fixedly installed with the adjacent first fixing plate 601. When the two support columns 1 move due to vibration, the pushing spring 603 will push the first fixing plate 601 to offset part of the moving force.

[0029] The implementation principle of a guardrail for a building foundation pit in the embodiment of the present application is as follows: when the building foundation pit vibrates due to construction, the two support columns 1 will move due to the long-term vibration. The pull-out plate 503 is pulled in advance so that the control block 502 can block the moving route of the adjustment block 402. The other pull-out plate 503 can use the top block 9 to lift the fixed block 7, so that the two support columns 1 will separate the first guardrail 2 and the second guardrail 3 when moving, and the extension block 401 will make up the separation distance according to the provided distance. This setting can prevent the overall guardrail from moving due to vibration and increase the gap between multiple overall guardrails. When the two support columns 1 move due to vibration, the push spring 603 will push the first fixed plate 601 to allow the shortening rod 602 to pull the second fixed plate 11, which can reduce the distance moved by the two support columns 1 due to vibration, and can also pull the two support columns 1 closer together in conjunction with the vibration during vibration. This setting can prevent the two support columns 1 from moving too far due to vibration.

[0030] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A guardrail for a construction foundation pit, comprising two support columns (1), wherein one side of one of the support columns (1) is fixedly mounted with two first guardrails (2), and one side of the other support column (1) is fixedly mounted with two second guardrails (3), characterized in that: On one side of each of the second guardrails (3), an extension component for extending the length of the overall guardrail is provided. On one side of one of the extension components, a control component for controlling the extension distance of the extension component is provided. On both sides of one of the first guardrails (2), a shortening component for reducing the length of the overall guardrail is provided.

2. A guardrail for a construction foundation pit as claimed in claim 1, characterized in that: On one side of each of the first guardrails (2), an extension groove is formed. On one side of the inner wall of each extension groove, an adjustment opening penetrating the first guardrail (2) is formed. The extension component includes an extension block (401) fixedly installed at one end of the second guardrail (3) and an adjustment block (402) fixedly installed on one side of each extension block (401). One side of each adjustment block (402) passes through the adjacent adjustment opening.

3. A guardrail for a construction foundation pit as claimed in claim 1, characterized in that: The control component includes an adjustment plate (501) fixedly installed on one side of the first guardrail (2) and arranged in a "C" shape, a plurality of control blocks (502) arranged inside the adjustment plate (501), and a pull plate (503) fixedly installed on one side of each control block (502). One side of each pull plate (503) penetrates the adjustment plate (501), and a fixed block (7) is fixedly installed on one side of each adjustment plate (501).

4. A guardrail for a construction foundation pit as claimed in claim 3, characterized in that: On both sides of the inner wall of the adjustment plate (501), a plurality of sliding grooves are formed. On both sides of each control block (502), a limiting plate (8) is fixedly installed. One side of each limiting plate (8) extends into the interior of the adjacent sliding groove.

5. A guardrail for a construction foundation pit as claimed in claim 3, characterized in that: On one side of the adjustment plate (501), a plurality of moving grooves are formed. On one side of each pull plate (503), a top block (9) is provided. On one side of each top block (9), a moving block (10) sliding inside the adjacent moving groove is fixedly installed.

6. A guardrail for a construction foundation pit as claimed in claim 1, characterized in that: The shortening component includes a first fixing plate (601) fixedly installed on one side of the first guardrail (2), a shortening rod (602) arranged on one side of the first fixing plate (601), and a pushing spring (603) sleeved on the shortening rod (602). One end of the shortening rod (602) penetrates the first fixing plate (601) and is fixedly installed with a second fixing plate (11). The second fixing plate (11) is fixedly installed with the adjacent second guardrail (3). The other end of the shortening rod (602) is fixedly installed with a limiting block. One end of the pushing spring (603) is fixedly installed with the adjacent limiting block, and the other end is fixedly installed with the adjacent first fixing plate (601).

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