A foundation pit supporting device for preventing foundation pit collapse

Abstract

The utility model provides a kind of foundation pit supporting device of preventing foundation pit collapse, the foundation pit supporting device sets up vertical support plate, horizontal support plate, limiting fixed plate, hydraulic support assembly and cross beam support assembly;Vertical support plate and horizontal support plate are provided with mounting screw hole;Limiting fixed plate is provided with bottom insert plate and insert cone;The hydraulic support assembly sets up hydraulic support plate, hydraulic live joint and hydraulic intermediate section;The cross beam support assembly sets up cross beam support plate, threaded support rod, threaded adjusting sleeve rod, support cross beam, support inclined beam;The foundation pit supporting device of preventing foundation pit collapse uses by first installing vertical support plate in the both sides of foundation pit, then install horizontal support plate, the lower part of the horizontal support plate is fixed by limiting fixed plate, then upper horizontal support plate is prestressed by first installing hydraulic support assembly, then install cross beam support assembly, so that it forms a lower part exists larger construction space passage's foundation pit supporting structure, and mechanical access and personnel construction are facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation pit support equipment, specifically a foundation pit support device for preventing foundation pit collapse. Background Technology

[0002] An excavation pit is a type of earthwork excavation project in civil engineering for the construction of underground structures or deep foundations. Excavation pit projects typically involve excavating soil and rock below ground level to provide space for basements, underground parking garages, subway tunnels, bridge foundations, etc. The scale and complexity of an excavation pit project can vary greatly depending on the excavation depth, geological conditions, surrounding environment, and design requirements. Precise planning and execution are crucial for excavation pit projects, as improper excavation can lead to soil instability and subsequent pit collapse. This not only delays the project and increases costs but can also endanger worker safety and the stability of surrounding buildings. Therefore, a critical aspect of excavation pit engineering is ensuring its stability and preventing collapse. In existing anti-collapse support methods, steel support structures are commonly used in open-cut foundation pits. These steel structures support the soil walls on both sides of the pit against each other. However, when the pit is deep and machinery needs to be used inside, the suspended steel support structure occupies space, resulting in insufficient height for movement within the pit. This makes it difficult for machinery to enter and for workers to operate inside, especially in long, narrow pits, hindering construction progress. Therefore, based on the construction requirements of corridor-type foundation pits, the applicant proposes a foundation pit support device for preventing collapse. This device is easy to install and disassemble, has good stability, provides ample installation space after installation, facilitates construction, is reusable, low-cost, and safe and reliable. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model proposes a foundation pit support device for preventing foundation pit collapse. This device comprises vertical support plates, horizontal support plates, limiting and fixing plates, hydraulic support components, and cross-beam support components. In use, vertical support plates are first installed on both sides of the foundation pit, followed by the installation of horizontal support plates. The lower part of the horizontal support plates is fixed by the limiting and fixing plates. The upper horizontal support plates are then prestressed by first installing the hydraulic support components, and finally, the cross-beam support components are installed, forming a foundation pit support structure with a large construction space passage at the bottom, facilitating machinery access and personnel construction.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A foundation pit support device for preventing foundation pit collapse includes a vertical support plate, a horizontal support plate, a limiting and fixing plate, a hydraulic support assembly, a cross-beam support assembly, and fixing bolts. The device is characterized in that: the vertical support plate is installed on the foundation pit wall; a horizontal support plate is installed on the vertical support plate; a limiting and fixing plate is installed on the outer side of the horizontal support plate near the bottom of the foundation pit; a hydraulic support assembly and a cross-beam support assembly are installed on the horizontal support plate near the top of the foundation pit; the vertical support plate and the horizontal support plate are connected by fixing bolts; the horizontal support plate and the limiting and fixing plate are connected by fixing bolts; and the hydraulic support assembly and the cross-beam support assembly are connected and fixed to the horizontal support plate by fixing bolts.

[0006] Furthermore, the foundation pit support device for preventing foundation pit collapse is equipped with a vertical support plate. The vertical support plate is a cuboid structure plate with interlocking concave-convex structural grooves on both sides, and horizontal plate mounting screw holes are provided on the vertical support plate.

[0007] Furthermore, the foundation pit support device for preventing foundation pit collapse is equipped with a horizontal support plate. The horizontal support plate is a cuboid structural plate with a groove in the middle. The horizontal support plate is provided with multiple sets of support plate mounting screw holes and horizontal plate mounting screw holes.

[0008] Furthermore, the foundation pit support device for preventing foundation pit collapse is equipped with a limit fixing plate. The upper part of the limit fixing plate is provided with multiple sets of support plate mounting screw holes, and the lower part is welded with a bottom insert plate. The bottom insert plate is provided with multiple sets of insert cone holes, and insert cones are installed in the insert cone holes.

[0009] Furthermore, the foundation pit support device for preventing foundation pit collapse is equipped with a hydraulic support assembly. The hydraulic support assembly has hydraulic support plates at both ends. The hydraulic support plates have an L-shaped structure and four sets of support plate mounting bolt holes. The hydraulic support assembly has a hydraulic intermediate section in the middle. The hydraulic intermediate section has hydraulic swivel heads at both ends. The hydraulic swivel heads have hydraulic jacks installed inside them. The hydraulic swivel heads and the hydraulic intermediate section are fixed together by bolts.

[0010] Furthermore, the foundation pit support device for preventing foundation pit collapse is equipped with a cross-beam support assembly. The cross-beam support assembly is equipped with a supporting cross-beam. Threaded adjusting sleeves are provided at both ends of the supporting cross-beam. Threaded support rods are installed inside the threaded adjusting sleeves. Cross-beam support plates are installed on the threaded support rods. Four sets of support plate mounting screw holes are provided on the cross-beam support plates. Supporting inclined beams are provided on the lower sides of both ends of the supporting cross-beam. A cross-beam support plate is provided at one end of the supporting inclined beam. An adjusting and fixing groove is provided at the connection between the supporting inclined beam and the supporting cross-beam.

[0011] The benefits of this application are:

[0012] 1. The foundation pit support device for preventing foundation pit collapse uses hydraulic support components, which can provide a certain amount of prestress to the foundation pit wall, making the foundation pit wall more stable and safe.

[0013] 2. The foundation pit support device for preventing foundation pit collapse is constructed and installed using a modular structure, which creates a larger space inside the foundation pit to facilitate the construction of personnel and machinery.

[0014] 3. The foundation pit support device for preventing foundation pit collapse adopts modular components for combination, which is convenient and quick to install, can be reused, and effectively reduces construction costs;

[0015] 4. The foundation pit support device for preventing foundation pit collapse is equipped with a limiting and fixing plate, which provides good support for the bottom of the foundation pit and also provides a large space at the bottom of the foundation pit, effectively avoiding the impact of the support frame on the foundation pit construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the vertical support plate and the horizontal support plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the limiting and fixing plate structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the hydraulic support assembly structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the cross-beam support component structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the installation structure of the limiting and fixing plate of this utility model;

[0022] Figure 7 This is a partial structural installation diagram of the hydraulic support component of this utility model;

[0023] Figure 8 This is a schematic diagram of the installation structure of the cross-beam support component of this utility model.

[0024] The markings in the diagram are as follows: 1. Vertical support plate; 1-1. Horizontal plate mounting screw hole; 2. Horizontal support plate; 2-1. Support plate mounting screw hole; 3. Limiting and fixing plate; 3-1. Bottom insert plate; 3-2. Insertion cone hole; 3-3. Insertion cone; 4. Hydraulic support assembly; 4-1. Hydraulic support plate; 4-2. Hydraulic intermediate section; 4-3. Hydraulic movable head; 5. Span beam support assembly; 5-1. Support span beam; 5-2. Threaded adjusting sleeve; 5-3. Threaded support rod; 5-4. Span beam support plate; 5-5. Supporting inclined beam; 6. Fixing bolt; 7. Foundation pit. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0026] like Figure 1 As shown, this is a foundation pit support device for preventing foundation pit collapse, including a vertical support plate 1, a horizontal support plate 2, a limiting and fixing plate 3, a hydraulic support assembly 4, a crossbeam support assembly 5, and fixing bolts 7. The foundation pit support device for preventing foundation pit collapse includes a vertical support plate 1, which can be made of steel plate or a single piece of wood. The vertical support plate 1 is installed on the wall of the foundation pit 7. A horizontal support plate 2, made of steel plate, is installed on the vertical support plate 1. A limiting and fixing plate 3, made of welded steel plate, is installed on the outer side of the horizontal support plate 2 near the bottom of the foundation pit 7. A hydraulic support assembly 4 and a crossbeam support assembly 5 are installed on the horizontal support plate 2 near the top of the foundation pit 7. The vertical support plate 1 and the horizontal support plate 2 are connected by fixing bolts 6. The horizontal support plate 2 and the limiting and fixing plate 3 are connected by fixing bolts 6. The hydraulic support assembly 4 and the crossbeam support assembly 5 are connected and fixed to the horizontal support plate 2 by fixing bolts 6.

[0027] like Figure 2 As shown, the foundation pit support device for preventing foundation pit collapse is equipped with a vertical support plate 1 and a horizontal support plate 2. The vertical support plate 1 is a cuboid structural plate with interlocking concave-convex structural grooves on both sides. When installed side by side, it can be made into a whole and has a certain stability. The vertical support plate 1 is provided with horizontal plate mounting screw holes 1-1. The horizontal support plate 2 is a cuboid structural plate with a groove in the middle. The horizontal support plate 2 is provided with multiple sets of support plate mounting screw holes 2-1 and horizontal plate mounting screw holes 1-1. The vertical support plate 1 and the horizontal support plate 2 can be connected and fixed to form a whole by fixing bolts 6 through the horizontal plate mounting screw holes 1-1.

[0028] like Figure 3 , Figure 6 As shown, the foundation pit support device for preventing foundation pit collapse is equipped with a limiting and fixing plate 3. The upper part of the limiting and fixing plate 3 is provided with multiple sets of support plate mounting screw holes 2-1, and the lower part is welded with a bottom insert plate 3-1. The bottom insert plate 3-1 is provided with multiple sets of insert cone holes 3-2, and insert cones 3-3 are installed in the insert cone holes 3-2. The limiting and fixing plate 3 is inserted into the bottom of the foundation pit 7 through the insert cones 3-1, so that it can be stably installed and has good support force.

[0029] like Figure 4 , Figure 7As shown, the foundation pit support device for preventing foundation pit collapse is equipped with a hydraulic support assembly 4. Hydraulic support plates 4-1 are installed at both ends of the hydraulic support assembly 4. The hydraulic support plates 4-1 have an L-shaped structure and four sets of mounting bolt holes 2-1. A hydraulic intermediate section 4-2 is installed in the middle of the hydraulic support assembly 4. The hydraulic intermediate section 4-2 is selected and adjusted according to the width of the foundation pit. Hydraulic hinge heads 4-3 are installed at both ends of the hydraulic intermediate section 4-2. Hydraulic jacks are installed inside the hydraulic hinge heads 4-3. The hydraulic jacks provide prestress to the vertical support plate 1 and the horizontal support plate 2 of the hydraulic support assembly 4. The hydraulic hinge heads 4-3 and the hydraulic intermediate section 4-2 are fixed together by bolts.

[0030] like Figure 5 , Figure 8 As shown, the foundation pit support device for preventing foundation pit collapse is equipped with a cross-beam support assembly 5. The cross-beam support assembly 5 is equipped with a supporting cross-beam 5-1. Threaded adjusting sleeves 5-2 are set at both ends of the supporting cross-beam 5-1. Threaded support rods 5-3 are installed inside the threaded adjusting sleeves 5-2. A cross-beam support plate 5-4 is installed on the threaded support rod 5-3. The threaded support rod 5-3 can rotate on the cross-beam support plate 5-4. The threaded support rod 5-3 is provided with a protruding structure to facilitate rotation. Four sets of support plate mounting screw holes 2-1 are provided on the cross-beam support plate 5-4. Supporting inclined beams 5-5 are set on the lower side of both ends of the supporting cross-beam 5-1. A cross-beam support plate 5-4 is set at one end of the supporting inclined beam 5-5. An adjusting and fixing groove is provided at the connection between the supporting inclined beam 5-5 and the supporting cross-beam 5-1.

[0031] When using the foundation pit support device for preventing foundation pit collapse, after the foundation pit 7 is excavated, a vertical support plate 1 is installed on the foundation pit wall, and then a horizontal support plate 2 is installed on the vertical support plate 1. The vertical support plate 1 and the horizontal support plate are connected by fixing bolts 6. Then, a limiting fixing plate 3 is installed at the lower part of the horizontal support plate 2. After the limiting fixing plate 3 is installed, a cone 3-3 is driven into the cone hole 3-2 of the limiting fixing plate. At this time, the lower part of the horizontal support plate 2 has good fixation. Then, the hydraulic support plate 4-1 of the hydraulic support assembly 4 is installed at both ends of the top horizontal support plate 2. Then, the remaining part of the hydraulic support assembly 4 is lifted and installed on the hydraulic support plate 4-1 by a crane or other lifting equipment. Then, the hydraulic jack installed in the hydraulic jack 4-3 is used to provide a hydraulic support to the horizontal support plate 2 through synchronous adjustment of the hydraulic jack 4-3. After the prestressed pressure is set, the crossbeam support assembly 5 is installed in the middle of the horizontal support plate 2. The crossbeam support assembly 5 is equipped with a crossbeam support plate 5-4. The crossbeam support plate 5-4 is installed on the horizontal support plate 2 by bolts. When installing the crossbeam support assembly 5, the length of the crossbeam support assembly is adjusted by rotating the threaded support rod 5-3. The threaded support rod 5-3 and the threaded adjusting sleeve rod 5-2 are threaded structures, and their length can be adjusted by rotation. After installation, a stable foundation pit support structure can be formed. The lower part of the foundation pit has a large space, which is convenient for mechanical personnel to carry out construction. If the foundation pit support device for preventing foundation pit collapse is used for a long time, the hydraulic support assemblies 4 at both ends can be replaced with the crossbeam support assembly 5, so that the foundation pit support device for preventing foundation pit collapse can continue to use the hydraulic support assembly 4 for installation and adjustment.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any modifications or equivalent changes made based on the technical essence of the present utility model shall still fall within the scope of protection claimed by the present utility model.

Claims

1. A foundation pit support device for preventing foundation pit collapse, comprising a vertical support plate (1), a horizontal support plate (2), a limiting and fixing plate (3), a hydraulic support assembly (4), a cross-beam support assembly (5), and fixing bolts (6), characterized in that: The foundation pit support device for preventing foundation pit collapse is provided with a vertical support plate (1), which is installed on the wall of the foundation pit (7). A horizontal support plate (2) is installed on the vertical support plate (1). A limiting and fixing plate (3) is installed on the outside of the horizontal support plate (2) near the bottom of the foundation pit. A hydraulic support assembly (4) and a cross beam support assembly (5) are installed on the horizontal support plate (2) near the top of the foundation pit (7). The vertical support plate (1) and the horizontal support plate (2) are connected by fixing bolts (6). The horizontal support plate (2) and the limiting and fixing plate (3) are connected by fixing bolts (6). The hydraulic support assembly (4) and the cross beam support assembly (5) are connected and fixed to the horizontal support plate (2) by fixing bolts (6).

2. The foundation pit support device for preventing foundation pit collapse according to claim 1, characterized in that: The foundation pit support device for preventing foundation pit collapse is equipped with a vertical support plate (1). The vertical support plate (1) is a cuboid structure plate with interlocking concave and convex structural grooves on both sides. The vertical support plate (1) is equipped with horizontal plate mounting screw holes (1-1).

3. The foundation pit support device for preventing foundation pit collapse according to claim 1, characterized in that: The foundation pit support device for preventing foundation pit collapse is provided with a horizontal support plate (2). The horizontal support plate (2) is a cuboid structure plate with a groove in the middle. The horizontal support plate (2) is provided with multiple sets of support plate mounting screw holes (2-1) and horizontal plate mounting screw holes (1-1).

4. The foundation pit support device for preventing foundation pit collapse according to claim 1, characterized in that: The foundation pit support device for preventing foundation pit collapse is equipped with a limit fixing plate (3). The upper part of the limit fixing plate (3) is provided with multiple sets of support plate mounting screw holes (2-1), and the lower part is welded with a bottom insert plate (3-1). The bottom insert plate (3-1) is provided with multiple sets of insert cone holes (3-2), and insert cones (3-3) are provided in the insert cone holes (3-2).

5. A foundation pit support device for preventing foundation pit collapse according to claim 1, characterized in that: The foundation pit support device for preventing foundation pit collapse is equipped with a hydraulic support assembly (4). The hydraulic support assembly (4) has hydraulic support plates (4-1) at both ends. The hydraulic support plates (4-1) are L-shaped structures. Four sets of support plate mounting screw holes (2-1) are provided on the hydraulic support plates (4-1). A hydraulic intermediate section (4-2) is provided in the middle of the hydraulic support assembly (4). Hydraulic jacks (4-3) are provided at both ends of the hydraulic intermediate section (4-2). A hydraulic jack is provided inside the hydraulic jack (4-3). The hydraulic jacks (4-3) and the hydraulic intermediate section (4-2) are fixed together by bolts.

6. The foundation pit support device for preventing foundation pit collapse according to claim 1, characterized in that: The foundation pit support device for preventing foundation pit collapse is equipped with a cross beam support assembly (5). The cross beam support assembly (5) is equipped with a support cross beam (5-1). The support cross beam (5-1) is equipped with threaded adjusting sleeves (5-2) at both ends. Threaded support rods (5-3) are installed inside the threaded adjusting sleeves (5-2). Cross beam support plates (5-4) are installed on the threaded support rods (5-3). Four sets of support plate mounting screw holes (2-1) are provided on the cross beam support plates (5-4). Supporting inclined beams (5-5) are provided on the lower sides of both ends of the support cross beam (5-1). A cross beam support plate (5-4) is provided at one end of the supporting inclined beam (5-5). An adjusting and fixing groove is provided at the connection between the supporting inclined beam (5-5) and the support cross beam (5-1).

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