A municipal road foundation pit supporting structure

Abstract

The utility model discloses a municipal road foundation pit support structure, and the technical field of foundation pit support, this structure includes the support board, and the support board is connected with the movable frame through the elastic part, and the top and bottom of movable frame all are installed with the mounting plate, and a plurality of interval distribution's limit insertion rod is installed on the mounting plate, is set up with the limit insertion rod corresponding limit hole on the support board. The utility model discloses two support boards are placed in the lateral wall both sides of foundation pit in parallel through being arranged, and the support assembly is supported to two support boards, so that the support board can support the lateral wall of foundation pit, and in the process that the support assembly cooperates with the support board, the support assembly will move movable frame through the jolt component and jolt, so that the limit insertion rod on the mounting plate inserts the soil of foundation pit from the limit hole on the support board, so this can effectively limit the support board, avoid the support board to appear horizontal movement when receiving the lateral force, improve the stability of support board support.

Description

Technical Field

[0001] This utility model belongs to the field of foundation pit support, and relates to a foundation pit support structure for municipal roads. Background Technology

[0002] Municipal road foundation pits are temporary or semi-permanent pit structures formed during the construction of municipal road projects (such as underground pipeline laying, underground passages, underground parking lots, roadbed reinforcement, etc.). In order to ensure the safety of underground engineering construction and prevent the collapse or deformation of the foundation pit sidewalls and surrounding environment (roads, pipelines, buildings, etc.), foundation pits need to be supported.

[0003] Currently, when supporting the sidewalls of a foundation pit, support plates are typically placed vertically on both sides of the pit's sidewall and supported by support rods to provide support. However, existing support structures cannot effectively restrict the lateral movement of the support plates. The existing support structures only support the back of the support plates with support rods, while the front of the support plates is used to limit and protect the sidewalls of the foundation pit. When subjected to lateral forces, the support plates are prone to displacement, affecting their stability. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a municipal road foundation pit support structure to solve the technical problem that the existing foundation pit support structure is prone to lateral movement of the support plate when subjected to lateral earth pressure, resulting in poor support stability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a municipal road foundation pit support structure, including a support plate. The support plate is connected to a movable frame via an elastic element. A support assembly for limiting and supporting the support plate is provided above the support plate. A jacking assembly for jacking the movable frame is provided on the support assembly and the movable frame. Limiting holes are opened on the surface of the support plate and a movable groove is opened at the top. Mounting plates are installed at the top and bottom of the movable frame. Several spaced-apart limiting rods are installed on the mounting plates, and the limiting holes correspond to the limiting rods. The support assembly includes two parallel support frames. Two sets of symmetrically distributed telescopic elements are installed between the two support frames. Two symmetrically distributed movable columns are installed at the bottom of the support frames, and the movable columns correspond to the movable groove.

[0006] In one specific embodiment, the elastic element includes two symmetrically distributed fixed rods mounted on the support plate, and the fixed rods are slidably connected to the movable frame, and the support plate is provided with a spring connected to the movable frame.

[0007] In one specific embodiment, the elastic element further includes a baffle plate, which is installed at the end of the fixing rod away from the support plate.

[0008] In one specific embodiment, the spring is mounted on a fixed rod, and the two ends of the spring are respectively connected to a support plate and a movable frame.

[0009] In one specific embodiment, the jacking assembly includes four symmetrically arranged jacking blocks mounted on a support frame and jacking grooves formed on the movable frame, with the jacking blocks and jacking grooves cooperating with each other.

[0010] In one specific embodiment, a positioning stake is installed on each side of the support plate.

[0011] In one specific embodiment, the bottom of the support plate has a triangular structure.

[0012] In one specific embodiment, the top of the support plate is provided with a threaded hole for connection with a bolt provided on the support frame.

[0013] In one specific embodiment, the telescopic component is a hydraulic rod, a threaded adjusting rod, or a sleeve-type adjusting rod.

[0014] In one specific embodiment, the end of the limiting rod is a tapered head structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention places two support plates parallel to each other on both sides of the foundation pit. The support components support and limit the two support plates, allowing them to support the side wall of the foundation pit. During the interaction between the support components and the support plates, the support components move the movable frame through the jacking components, causing the limiting rods on the mounting plate to be inserted into the soil of the foundation pit through the limiting holes on the support plates. This effectively limits the support plates, preventing lateral movement when subjected to lateral forces and improving the stability of the support plate support. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a municipal road foundation pit support structure.

[0017] Figure 2 This is a schematic diagram of the disassembled structure of a municipal road foundation pit support structure.

[0018] Figure 3 This is a schematic diagram of a movable frame in a municipal road foundation pit support structure.

[0019] In the diagram: 1. Support plate; 2. Positioning pile; 3. Limiting hole; 4. Movable frame; 5. Fixing rod; 6. Baffle; 7. Spring; 8. Mounting plate; 9. Limiting rod; 10. Support frame; 11. Telescopic component; 12. Movable column; 13. Movable groove; 14. Pushing inclined block; 15. Pushing inclined groove. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings: See Figure 1 and Figure 2 This utility model provides a municipal road foundation pit support structure, including a support plate 1, a limiting hole 3, an elastic element, a movable frame 4, a mounting plate 8, a limiting rod 9, a support assembly, and a jacking assembly.

[0023] The support plate 1 is connected to the movable frame 4 via an elastic element. The mounting plate 8 is installed on the top and bottom of the movable frame 4. Several spaced-apart limiting rods 9 are installed on the mounting plate 8. The limiting rods 9 are inserted into the limiting holes 3 on the support plate 1 that correspond to the limiting rods 9. The support assembly is connected to the support plate 1 to provide limiting support for the support plate 1. The jacking assembly is set on the support assembly and the movable frame 4 to jack the movable frame 4, allowing the limiting rods 9 to be inserted from the limiting holes 3.

[0024] Furthermore, positioning piles 2 are installed on both sides of the support plate 1. This arrangement effectively improves the positioning accuracy and stability of the support plate 1 when it is installed at the bottom of the foundation pit. The positioning piles 2 can be pre-inserted into the soil to guide and limit the support plate 1, preventing it from shifting or tilting during installation. This ensures that the support plate 1 is vertically and accurately positioned, providing a reliable foundation for the subsequent connection of support components, and enhancing the overall structure's resistance to disturbance in the early stages of construction.

[0025] Furthermore, the elastic element includes two symmetrically distributed fixed rods 5 mounted on the support plate 1. The fixed rods 5 are slidably connected to the movable frame 4. A baffle 6 is installed at the end of the fixed rod 5 away from the support plate 1, and a spring 7 connected to the movable frame 4 is provided on the support plate 1. This structure achieves precise guidance of the moving direction of the movable frame 4 through the fixed rods 5, avoiding deviation or jamming during its movement; the baffle 6 can limit the sliding range of the movable frame 4 to prevent it from detaching; and the spring 7 provides an automatic reset function, driving the movable frame 4 to retract, causing the limiting rod 9 to withdraw from the soil.

[0026] The fixed rod 5 and the movable frame 4 can be slidably connected in such a way that the fixed rod 5 passes through the movable frame 4.

[0027] Furthermore, the support assembly includes two parallel support frames 10, with two sets of symmetrically distributed telescopic members 11 installed between the two support frames 10. Two symmetrically distributed movable columns 12 are installed at the bottom of each support frame 10, and two movable slots 13 corresponding to the movable columns 12 are formed at the top of the support plate 1. This design allows the support assembly to flexibly adjust the distance between the two support frames 10 via the telescopic members 11 to adapt to the needs of foundation pits of different widths, exhibiting good versatility and adaptability. The cooperation between the movable columns 12 and the movable slots 13 enables rapid alignment and connection between the support frame 10 and the support plate 1, and can synchronously trigger the jacking component during the connection process, achieving structural linkage and improving installation efficiency and connection reliability.

[0028] Furthermore, the jacking assembly includes four symmetrically arranged pushing inclined blocks 14 mounted on the support frame 10. Each movable frame 4 has two pushing inclined grooves 15 that cooperate with the pushing inclined blocks 14. This arrangement utilizes inclined surface contact to achieve force transmission and conversion. During the downward pressing and installation of the support frame 10, the pushing inclined blocks 14 slide along the pushing inclined grooves 15 and apply horizontal thrust, thereby smoothly pushing the movable frame 4 towards the support plate 1, causing the limiting rod 9 to smoothly pass through the limiting hole 3 and insert into the soil. The symmetrical arrangement of multiple sets of pushing inclined blocks 14 makes the force more even, avoiding jamming or deformation caused by unilateral force on the movable frame 5, and ensuring reliable operation and sensitive response of the limiting mechanism.

[0029] like Figures 1-3As shown, one embodiment provides a municipal road foundation pit support structure, including a support plate 1. The bottom of the support plate 1 is triangular, which facilitates the insertion of the support plate 1 into the foundation pit. The support plate 1 is connected to a movable frame 4 through an elastic element. The top and bottom of the movable frame 4 are equipped with mounting plates 8. Several spaced limiting rods 9 are installed on the mounting plates 8. The support plate 1 has limiting holes 3 corresponding to the limiting rods 9. The limiting holes 3 are aligned with the limiting rods 9, so that when the movable frame 4 approaches the support plate 1, the limiting rods 9 can be inserted into the soil through the limiting holes 3.

[0030] Furthermore, the bottom of the support plate 1 is designed in a triangular shape and equipped with positioning piles 2, which facilitates quick insertion into the bottom of the foundation pit and accurate positioning, further improving installation accuracy and the overall structure's resistance to lateral displacement. The entire device is compact, reliable in operation, and easy to install, making it particularly suitable for foundation pit support scenarios such as municipal roads where construction efficiency and safety requirements are high.

[0031] The foundation pit support structure for this municipal road also includes: The support assembly and the jacking assembly are provided. The support assembly is connected to the support plate 1 and is used to limit and support the support plate 1. The jacking assembly is provided on the support assembly and the movable frame 4 and is used to jack the movable frame 4 so that the limiting rod 9 is inserted from the limiting hole 3.

[0032] In one embodiment, positioning piles 2 are installed on both sides of the support plate 1.

[0033] To facilitate the positioning of the support plate 1, when the support plate 1 is installed at the bottom of the foundation pit, the positioning piles 2 on both sides of the support plate 1 are used to position the support plate 1, which facilitates the positioning of the support plate 1 until the support plate 1 is also inserted into the bottom of the foundation pit. This can effectively limit the position of the inserted support plate 1 and facilitate the installation of the support components.

[0034] In one embodiment, the elastic element includes two symmetrically distributed fixed rods 5 mounted on the support plate 1. The fixed rods 5 are slidably connected to the movable frame 4. A baffle 6 is installed at the end of the fixed rod 5 away from the support plate 1, and a spring 7 connected to the movable frame 4 is provided on the support plate 1.

[0035] In the initial state, due to the elastic force of the spring 7, the movable frame 4 is pressed against the end of the fixed rod 5 near the baffle 6. At this time, the limiting rod 9 is located on one side of the limiting hole 3 and has not passed through the limiting hole 3. When the support assembly is connected to the support plate 1, the movable frame 4 will be pushed by the jacking assembly, so that the movable frame 4 moves along the fixed rod 5 toward the support plate 1 until the mounting plate 8 on the movable frame 4 is in contact with the support plate 1, so that the limiting rod 9 is inserted into the soil of the pit side wall from the limiting hole 3. After the support assembly is disassembled, the movable frame 4 will automatically reset under the action of the spring 7, so that the limiting rod 9 will exit from the limiting hole 3.

[0036] In one embodiment, the support assembly includes two parallel support frames 10, two sets of symmetrically distributed telescopic members 11 are installed between the two support frames 10, two symmetrically distributed movable columns 12 are installed at the bottom of the support frame 10, and two movable grooves 13 corresponding to the movable columns 12 are opened at the top of the support plate 1.

[0037] After the two support plates 1 are inserted into the bottom of both sides of the pit sidewall, the distance between the two support frames 10 is adjusted by the telescopic component 11 so that the distance between the two support frames 10 is the same as the distance between the two support plates 1. Then, the movable column 12 at the bottom of the support frame 10 is aligned with the movable slot 13 and inserted until the movable column 12 is fully inserted into the movable slot 13. The top of the support plate 1 is also provided with a threaded hole, which makes it easy to screw the bolts on the support frame 10 into the threaded hole, so as to fix the support frame 10 and the support plate 1 in place.

[0038] It should be noted that the specific structure of the telescopic component 11 is not limited. The telescopic component 11 can be a hydraulic rod, a threaded adjusting rod, or a sleeve-type adjusting rod, etc. In this embodiment, the telescopic component 11 is set as a hydraulic rod.

[0039] In one embodiment, the jacking assembly includes four push blocks 14 mounted on the support frame 10, and each of the movable frames 4 has two push grooves 15 that cooperate with the push blocks 14.

[0040] During the process of the movable column 12 at the bottom of the support frame 10 being inserted into the movable slot 13, the pushing inclined block 14 on the support frame 10 will come into contact with the pushing inclined slot 15 of the movable frame 4, and push the movable frame 4 to move through the inclined surface until the pushing inclined block 14 passes the pushing inclined slot 15 of the movable frame 4. The pushing inclined block 14 that has passed the pushing inclined slot 15 will limit the movable frame 4. At this time, the mounting plate 8 on the movable frame 4 is pushed to the position where it is in contact with the support plate 1, and the limiting rod 9 on the mounting plate 8 will pass through the limiting hole 3, thereby limiting the support plate 1 and preventing the support plate 1 from moving laterally when subjected to lateral force, thus improving the stability of the support plate 1.

[0041] This invention places two support plates 1 parallel to each other on both sides of the foundation pit. The support components support and limit the two support plates 1, allowing the support plates 1 to support the foundation pit sidewall. During the cooperation between the support components and the support plates 1, the support components will push the movable frame 4 to move through the jacking components, so that the limiting rod 9 on the mounting plate 8 can be inserted into the soil of the foundation pit through the limiting hole 3 on the support plate 1. This can effectively limit the support plates 1, prevent the support plates 1 from moving laterally when subjected to lateral forces, and improve the stability of the support provided by the support plates 1.

[0042] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A municipal road foundation pit support structure, characterized in that, The system includes a support plate (1), which is connected to a movable frame (4) via an elastic element. A support assembly for limiting and supporting the support plate (1) is provided above the support plate (1). A jacking assembly for jacking the movable frame (4) is provided on the support assembly and the movable frame (4). A limiting hole (3) is opened on the surface of the support plate (1) and a movable groove (13) is opened on the top. An installation plate (8) is installed on the top and bottom of the movable frame (4). Several spaced limiting rods (9) are installed on the installation plate (8). The limiting hole (3) corresponds to the limiting rod (9). The support assembly includes two parallel support frames (10). Two sets of symmetrically distributed telescopic elements (11) are installed between the two support frames (10). Two symmetrically distributed movable columns (12) are installed at the bottom of the support frame (10). The movable columns (12) correspond to the movable groove (13).

2. The municipal road foundation pit support structure according to claim 1, characterized in that, The elastic element includes two symmetrically distributed fixed rods (5) installed on the support plate (1), and the fixed rods (5) are slidably connected to the movable frame (4), and the support plate (1) is provided with a spring (7) connected to the movable frame (4).

3. The municipal road foundation pit support structure according to claim 2, characterized in that, The elastic element also includes a baffle (6), which is installed at the end of the fixed rod (5) away from the support plate (1).

4. The municipal road foundation pit support structure according to claim 2, characterized in that, The spring (7) is mounted on the fixed rod (5), and the two ends of the spring (7) are connected to the support plate (1) and the movable frame (4) respectively.

5. The municipal road foundation pit support structure according to claim 1, characterized in that, The jacking assembly includes four symmetrically arranged push blocks (14) mounted on the support frame (10) and push grooves (15) opened on the movable frame (4), with the push blocks (14) and push grooves (15) cooperating with each other.

6. The municipal road foundation pit support structure according to claim 1, characterized in that, A positioning stake (2) is installed on each side of the support plate (1).

7. The municipal road foundation pit support structure according to claim 1, characterized in that, The bottom of the support plate (1) has a triangular structure.

8. The municipal road foundation pit support structure according to claim 1, characterized in that, The top of the support plate (1) is provided with a threaded hole, which is used to connect with a bolt provided on the support frame (10).

9. The municipal road foundation pit support structure according to claim 1, characterized in that, The telescopic component (11) is a hydraulic rod, a threaded adjusting rod, or a sleeve-type adjusting rod.

10. The municipal road foundation pit support structure according to claim 1, characterized in that, The end of the limiting rod (9) is a tapered head structure.

Images