Slope self-locking supporting device for foundation pit excavation

Abstract

The utility model belongs to the technical field of civil engineering foundation pit supporting, and provides a slope self-locking supporting device for foundation pit excavation, which comprises a supporting plate, an upper connecting plate is welded and connected to the top end of the supporting plate, a self-locking assembly is arranged between the upper connecting plate and a top beam at the top of a foundation pit, and the self-locking assembly comprises a bearing plate, a locking plate and a first locking bolt. The bearing plate is installed on the side, close to the supporting plate, of the top beam, the upper connecting plate is clamped in the bearing plate, the locking plate is slidably connected between the bearing plate and the upper connecting plate, and the first locking bolts are symmetrically distributed on a top plate of the locking plate and downwards penetrate through the locking plate to be screwed in the top beam and the upper connecting plate; according to the self-locking principle, the device can be rapidly and conveniently installed on the foundation pit slope, reliable supporting force is provided, when the device needs to be dismantled, the device can be conveniently and rapidly unlocked and dismantled, reutilization is achieved, and the construction cost and period are effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of foundation pit support technology in civil engineering, specifically a self-locking slope support device for foundation pit excavation. Background Technology

[0002] In fields such as building construction, municipal engineering (such as subways, utility tunnels, and building basements), water conservancy projects, and transportation engineering, foundation pit excavation is a crucial basic construction step.

[0003] As urban construction expands into underground spaces, the scale and depth of foundation pits are increasing, and the surrounding environment is becoming more complex (adjacent buildings, roads, pipelines, etc.). This poses unprecedented challenges to slope stability and construction safety during foundation pit excavation. Ensuring slope stability and preventing collapse and slippage are prerequisites for ensuring personnel safety, the safety of adjacent facilities, and the smooth progress of the project.

[0004] Therefore, to ensure the stability and construction safety of the foundation pit slope during excavation, temporary support structures are usually required. Traditional support methods include soil nailing walls, anchor bolts, sheet piles, and retaining walls. While these methods are effective, they require drilling, grouting, welding, and even large equipment, leading to complex construction and long construction periods. Furthermore, if the slope needs to be removed later, dismantling some support structures is time-consuming and labor-intensive, and may even require destructive demolition. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a self-locking slope support device for foundation pit excavation, which solves the problems of complex construction and difficulty in dismantling foundation pits in the prior art.

[0006] A self-locking slope support device for foundation pit excavation includes a support plate. An upper connecting plate is welded to the top of the support plate. A self-locking assembly is provided between the upper connecting plate and the capping beam at the top of the foundation pit. The self-locking assembly includes a bearing plate, a locking plate, and a locking bolt. The bearing plate is installed on the side of the capping beam near the support plate. The upper connecting plate is locked inside the bearing plate. The locking plate is slidably connected between the bearing plate and the upper connecting plate. The locking bolt is symmetrically distributed on the top plate of the locking plate and passes downward through the locking plate, tightening it between the capping beam and the upper connecting plate.

[0007] Preferably, the support plate is designed with steel plate or composite material plate, and a lower connecting plate is welded to the bottom end of the support plate. The lower connecting plate is provided with an anti-slip pad on the side near the pit.

[0008] Preferably, the top of the support plate is provided with a "well"-shaped reinforcing rib.

[0009] Preferably, a sealing plate is provided on the top of the support plate and near one side edge, the vertical cross-sectional profile of the sealing plate is an inverted "L" shape, and a sealing strip is provided on the inner side wall of the sealing plate.

[0010] Preferably, the top surface of the upper connecting plate is symmetrically provided with lifting rings.

[0011] Preferably, the bottom of the upper connecting plate is provided with a mating groove, the side of the upper connecting plate near the crown beam is provided with a locking groove, and there is an installation gap between the upper connecting plate and the crown beam.

[0012] Preferably, the vertical cross-sectional profile of the bearing plate is "L" shaped, the vertical section profile of the bearing plate is locked in the mating groove, the bottom of the bearing plate is provided with a welding connection mounting plate, and the mounting plate is provided with two locking bolts that are spaced apart and tightened into the crown beam.

[0013] Preferably, the vertical cross-sectional profile of the locking plate is T-shaped, the bottom plate of the locking plate is horizontally placed and cooperates with the locking groove, and the number of locking plates on a single support plate is not less than two.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model features a support plate with an upper connecting plate welded to its top. A bearing plate is connected to the side wall of the capping beam at the top of the foundation pit. When slope support is required, the support plate is attached to the slope surface of the foundation pit, and the upper connecting plate is secured to the bearing plate. This ensures that the support plate will not slide downwards. There is a gap between the upper connecting plate and the capping beam. A locking plate is slidably connected between the upper connecting plate and the capping beam. When the locking plate slides between the two, the locking bolt passes through the locking plate and locks in the pre-drilled holes in the capping beam and the upper connecting plate, achieving self-locking of the support plate on the slope. This allows for quick and convenient installation on the foundation pit slope, providing reliable support. When removal is required, it can also be easily and quickly unlocked and removed, enabling reuse and effectively reducing construction costs and time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the component structure of the integral slope self-locking support device of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the support plate and lower connecting plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the support plate and reinforcing ribs of this utility model;

[0019] Figure 4 This is a schematic diagram of the upper connecting plate component of this utility model;

[0020] Figure 5 This is a schematic diagram of the upper connecting plate and crown beam components of this utility model.

[0021] In the picture:

[0022] 1. Support plate; 2. Upper connecting plate; 3. Bearing plate; 4. Locking plate; 5. Locking bolt one; 6. Lower connecting plate; 7. Anti-slip pad; 8. Reinforcing rib; 9. Sealing plate; 10. Sealing strip; 11. Lifting ring; 12. Matching groove; 13. Locking groove; 14. Installation gap; 15. Mounting plate; 16. Locking bolt two; 17. Crown beam. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] As attached Figure 1 To be continued Figure 5 As shown:

[0025] Example 1: This utility model provides a self-locking slope support device for foundation pit excavation, including a support plate 1, an upper connecting plate 2 welded to the top of the support plate 1, a self-locking assembly between the upper connecting plate 2 and the capping beam 17 at the top of the foundation pit, the self-locking assembly including a bearing plate 3, a locking plate 4 and a locking bolt 5, the bearing plate 3 is installed on the side of the capping beam 17 near the support plate 1, the upper connecting plate 2 is locked in the bearing plate 3, the locking plate 4 is slidably connected between the bearing plate 3 and the upper connecting plate 2, and the locking bolt 5 is symmetrically distributed on the top plate of the locking plate 4 and passes downward through the locking plate 4 and is screwed into the capping beam 17 and the upper connecting plate 2.

[0026] It should be noted that the support plate 1 is equipped with an upper connecting plate 2 welded to its top. A bearing plate 3 is connected to the side wall of the capping beam 17 at the top of the pit. When slope support is required, the support plate 1 is attached to the slope surface of the pit, and the upper connecting plate 2 is locked onto the bearing plate 3. This ensures that the support plate 1 will not slide downward. There is a gap between the upper connecting plate 2 and the capping beam 17. The locking plate 4 is slidably connected between the upper connecting plate 2 and the capping beam 17. When the locking plate 4 slides between the two, the locking bolt 5 passes through the locking plate 4 and locks in the pre-drilled holes in the capping beam 17 and the upper connecting plate 2, thereby achieving self-locking of the support plate 1 on the slope. It can be quickly and conveniently installed on the slope of the pit, providing reliable support. When it needs to be removed, it can also be easily and quickly unlocked and removed, achieving reuse and effectively reducing construction costs and time.

[0027] In this embodiment, the support plate 1 is designed with steel plate or composite material plate. The bottom end of the support plate 1 is welded to the lower connecting plate 6, and the lower connecting plate 6 is provided with anti-slip pad 7 on the side near the pit.

[0028] It should be noted that the support plate 1 is designed as a steel plate or composite material plate, which serves as the main support component for slope protection, ensuring the support strength of the slope. The bottom of the support plate 1 is welded with a lower connecting plate 6. After the support plate 1 is installed, the bottom of the lower connecting plate 6 rests against the bottom of the foundation pit. An anti-slip pad 7 is installed on the lower connecting plate 6. The anti-slip pad 7 is in contact with the foundation pit, increasing the friction of the support plate 1 on the foundation pit.

[0029] In this embodiment, the top of the support plate 1 is provided with a "well"-shaped reinforcing rib 8.

[0030] It should be noted that adding reinforcing ribs 8 to the support plate 1 can further improve the strength of the support plate 1 and enhance its support capacity.

[0031] In this embodiment, a sealing plate 9 is provided on the top of the support plate 1 and near one side edge. The vertical cross-sectional profile of the sealing plate 9 is an inverted "L" shape, and a sealing strip 10 is provided on the inner side wall of the sealing plate 9.

[0032] It should be noted that a sealing plate 9 is provided on one side of the top of the support plate 1. The sealing plate 9 extends from the top surface of the support plate 1, so that when another support plate 1 is installed, the sealing plate 9 can extend to the top surface of the other support plate 1. The sealing strip 10 provided inside fits against the side wall of the other support plate 1. The sealing strip 10 has a waterproof function, which can reduce the gap between the two adjacent support plates 1 after installation and prevent water and soil from flowing out of the plate gap.

[0033] In this embodiment, the top surface of the upper connecting plate 2 is symmetrically provided with lifting rings 11.

[0034] It should be noted that by setting lifting rings 11 on the upper connecting plate 2, the support plate 1 can be lifted from the upper connecting plate 2 during installation, which facilitates the installation of the support plate 1.

[0035] In this embodiment, the bottom of the upper connecting plate 2 is provided with a mating groove 12, the side of the upper connecting plate 2 near the crown beam 17 is provided with a locking groove 13, and there is an installation gap 14 between the upper connecting plate 2 and the crown beam 17.

[0036] It should be noted that by setting a matching groove 12 at the bottom of the upper connecting plate 2, the matching groove 12 and the bearing plate 3 cooperate with each other. During the installation of the support plate 1, one section of the bearing plate 3 is stuck in the matching groove 12, so that the bearing plate 3 can hook the upper connecting plate 2, preventing the support plate 1 from sliding down. It also facilitates the later installation of the locking plate 4.

[0037] An installation gap 14 is provided between the upper connecting plate 2 and the crown beam 17, which allows the locking plate 4 to move within the installation gap 14 and eventually move to the appropriate installation position.

[0038] In this embodiment, the vertical cross-sectional profile of the bearing plate 3 is "L" shaped. The vertical section profile of the bearing plate 3 is locked in the mating groove 12. The bottom of the bearing plate 3 is provided with a welding connection mounting plate 15. The mounting plate 15 is provided with two locking bolts that are spaced apart and tightened into the crown beam 17.

[0039] It should be noted that a mounting plate 15 is provided at the bottom of the bearing plate 3. The mounting plate 15 is locked inside the crown beam 17 by the second locking bolt, so that the bearing plate 3 can be fixedly installed on the crown beam 17. At the same time, after the support plate 1 is removed later, the second locking bolt can be rotated off to remove the bearing plate 3, which facilitates installation and disassembly.

[0040] In this embodiment, the vertical cross-sectional profile of the locking plate 4 is T-shaped, the bottom plate of the locking plate 4 is horizontally placed and cooperates with the locking groove 13, and the number of locking plates 4 on a support plate 1 is not less than two.

[0041] It should be noted that by inserting the bottom plate of the locking plate 4 into the locking groove 13, the stability of the connection between the support plate 1 and the crown beam 17 can be further improved after the locking plate 4 connects the support plate 1 and the crown beam 17.

[0042] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A self-locking slope support device for foundation pit excavation, characterized in that, include: A support plate (1) is provided, with an upper connecting plate (2) welded to the top of the support plate (1). A self-locking assembly is provided between the upper connecting plate (2) and the capping beam (17) at the top of the pit. The self-locking assembly includes a bearing plate (3), a locking plate (4), and a locking bolt (5). The bearing plate (3) is installed on the side of the capping beam (17) near the support plate (1). The upper connecting plate (2) is locked in the bearing plate (3). The locking plate (4) is slidably connected between the bearing plate (3) and the upper connecting plate (2). The locking bolt (5) is symmetrically distributed on the top plate of the locking plate (4) and passes downward through the locking plate (4) and is screwed into the capping beam (17) and the upper connecting plate (2).

2. The slope self-locking support device for foundation pit excavation as described in claim 1, characterized in that: The support plate (1) is designed with steel plate or composite material plate. The bottom end of the support plate (1) is welded to a lower connecting plate (6). The lower connecting plate (6) is provided with an anti-slip pad (7) on the side near the pit.

3. The slope self-locking support device for foundation pit excavation as described in claim 1, characterized in that: The top of the support plate (1) is provided with a "well" shaped reinforcing rib (8).

4. The slope self-locking support device for foundation pit excavation as described in claim 1, characterized in that: The support plate (1) has a sealing plate (9) on its top and near one side edge. The vertical cross-sectional profile of the sealing plate (9) is an inverted "L" shape. The sealing plate (9) has a sealing strip (10) on its inner side wall.

5. The slope self-locking support device for foundation pit excavation as described in claim 1, characterized in that: The top surface of the upper connecting plate (2) is symmetrically provided with lifting rings (11).

6. The self-locking slope support device for foundation pit excavation as described in claim 1, characterized in that: The bottom of the upper connecting plate (2) is provided with a matching groove (12), the side of the upper connecting plate (2) near the crown beam (17) is provided with a locking groove (13), and there is an installation gap (14) between the upper connecting plate (2) and the crown beam (17).

7. The self-locking slope support device for foundation pit excavation as described in claim 6, characterized in that: The vertical cross-sectional profile of the bearing plate (3) is "L" shaped. The vertical section profile of the bearing plate (3) is inserted into the mating groove (12). The bottom of the bearing plate (3) is provided with a welding connection mounting plate (15). The mounting plate (15) is provided with two locking bolts that are spaced apart and screwed into the crown beam (17).

8. The slope self-locking support device for foundation pit excavation as described in claim 7, characterized in that: The vertical cross-sectional profile of the locking plate (4) is T-shaped. The bottom plate of the locking plate (4) is horizontal and cooperates with the locking groove (13). The number of locking plates (4) on a support plate (1) is not less than two.

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