Earth excavation foundation pit protection device

Abstract

The utility model discloses an earth excavation foundation pit protection device, which relates to the technical field of earth excavation and comprises a plurality of horizontal breast boards which are horizontally arranged on two sides of a foundation pit and are vertically distributed at equal intervals, and every two adjacent horizontal breast boards at the same height are connected through a splicing piece. The outer walls of the multiple layers of horizontal soil retaining plates are connected with reinforcing connecting plates through supporting pieces, and at least two adjusting and supporting ejector rod assemblies are arranged between every two corresponding reinforcing connecting plates in the foundation pit. By means of the splicing pieces, two adjacent horizontal soil retaining plates at the same height can be spliced, the reinforcing connecting plates are utilized to abut against the horizontal soil retaining plates into a foundation pit, the supporting pieces support the horizontal soil retaining plates, and then inserting-connecting heads at the ends of the adjusting and supporting ejector rod assemblies are inserted into inserting-connecting grooves of the reinforcing connecting plates. The foundation pit protection device is simple in structure, convenient to disassemble and assemble, high in supporting stability, not prone to damage, long in service life and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of earthwork excavation technology, specifically to a protective device for earthwork excavation pits. Background Technology

[0002] When excavating earthwork, a foundation pit needs to be dug and then protected. Currently, for loose, highly moist soil, a continuous horizontal retaining support device can be used, with an excavation depth of up to 5 meters. The continuous horizontal retaining support device consists of multiple layers of horizontal retaining plates along the vertical direction on both sides of the foundation pit. Each layer of horizontal retaining plates has multiple plates arranged in the front-to-back direction. Vertical columns are located on the inner side of the horizontal retaining plates, and an adjustable support structure is provided between two mating columns. Although this device can protect the foundation pit, its complex structure makes disassembly and assembly difficult. For example, Chinese patent application number CN202420177196.0 discloses a foundation pit protection device for construction earthwork excavation. While it can be disassembled, it uses locking bolts for securing the support, resulting in poor stability, easy damage, and complex operation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a protective device for excavated foundation pits.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a protective device for excavated foundation pits, comprising multiple horizontally spaced retaining plates arranged horizontally on both sides of the foundation pit. Adjacent horizontal retaining plates at the same height are connected by splicing components. The outer walls of the multiple layers of horizontal retaining plates are connected by support components with reinforcing plates. At least two adjusting support rod assemblies are provided between corresponding reinforcing plates in the foundation pit. The adjusting support rod assembly includes a connecting sleeve plate on one reinforcing plate and a connecting plate on another reinforcing plate that extends into the connecting sleeve plate. The top of the connecting sleeve plate is provided with a limiting component for limiting the position of the connecting plate. The ends of the connecting sleeve plate and the connecting plate are connected to the two reinforcing plates by a connector and a connector groove.

[0006] As a preferred technical solution of this utility model, the splicing component includes a T-shaped splicing block at one end of the horizontal retaining plate, and a splicing groove at the other end of the horizontal retaining plate that matches and splices with the splicing block of another horizontal retaining plate.

[0007] As a preferred technical solution of this utility model, the support member includes a limiting support block disposed on the inner wall of the reinforcing connecting plate and providing limiting support for the horizontal retaining plate.

[0008] As a preferred technical solution of this utility model, the adjusting support rod assembly further includes guide grooves provided on both sides of the inner wall of the connecting sleeve plate, and the connecting plate is provided with guide sliders that match the guide grooves.

[0009] As a preferred technical solution of this utility model, the limiting component includes a fixing nut with a connecting sleeve plate at the top, and a locking screw that extends into the connecting sleeve plate is threaded onto the fixing nut.

[0010] As a preferred embodiment of this utility model, the inner end of the locking screw is provided with a limiting and tightening block.

[0011] As a preferred technical solution of this utility model, the limiting and tightening block has a plurality of V-shaped blocks on the side facing the connecting plate, and the connecting plate has V-shaped grooves that match the V-shaped blocks.

[0012] The beneficial effects of this utility model are:

[0013] This type of excavation pit protection device, through its splicing components, allows for the splicing of two adjacent horizontal retaining plates at the same height. Reinforcing plates are used to press multiple horizontal retaining plates tightly into the pit, while support components provide support for the horizontal retaining plates. The connectors at the ends of the adjusting support rods are then inserted into the slots of the reinforcing plates. This design makes the pit protection device simple in structure, easy to assemble and disassemble, and provides high stability, resistance to damage, a long service life, and ease of operation. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a structural schematic diagram of a foundation pit protection device for earthwork excavation according to this utility model;

[0016] Figure 2 This is an enlarged structural diagram of the splicing components of a foundation pit protection device for earthwork excavation according to this utility model;

[0017] Figure 3 This is a schematic diagram of the adjustable support top rod assembly of a foundation pit protection device for earthwork excavation according to this utility model;

[0018] Figure 4 This is a cross-sectional view of the adjustable support top rod assembly of a foundation pit protection device for earthwork excavation according to this utility model.

[0019] In the diagram: 1. Horizontal retaining plate; 2. Splicing component; 3. Support component; 4. Reinforcing connecting plate; 5. Adjustable support top rod assembly; 7. Connecting sleeve plate; 8. Connecting plate; 9. Limiting component; 10. Splicing block; 11. Splicing groove; 12. Limiting support block; 13. Guide slide groove; 14. Guide slider; 15. Fixing nut; 16. Locking screw; 17. Limiting tightening block; 18. V-block; 19. V-groove. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a foundation pit protection device for earthwork excavation, comprising multiple horizontally spaced, vertically distributed retaining plates 1 horizontally arranged on both sides of the foundation pit. Adjacent horizontal retaining plates 1 at the same height are connected by splicing members 2. The outer walls of the multiple layers of horizontal retaining plates 1 are connected by supporting members 3 to reinforcing connecting plates 4. At least two adjusting support rod assemblies 5 are provided between corresponding reinforcing connecting plates 4 within the foundation pit. Each adjusting support rod assembly 5 includes a connecting sleeve plate 7 on one reinforcing connecting plate 4 and a connecting plate 8 on another reinforcing connecting plate 4 extending into the connecting sleeve plate 7. The top of the connecting sleeve plate 7 is provided with… The limiting component 9 limits the connection plate 8. The ends of the connecting sleeve plate 7 and the connecting plate 8 are connected to the two reinforcing connecting plates 4 through the matching of the plug and the plug groove. Through the provided splicing part 2, two adjacent horizontal retaining plates 1 at the same height can be spliced. The reinforcing connecting plates 4 are used to push multiple horizontal retaining plates 1 into the pit. The support 3 supports the horizontal retaining plates 1. Then, the plug at the end of the adjusting support top rod assembly 5 is inserted into the plug groove of the reinforcing connecting plate 4. This makes the pit protection device simple in structure, easy to disassemble and assemble, and has high support stability. It is not easy to be damaged, has a long service life, and is easy to operate.

[0022] The splicing component 2 includes a T-shaped splicing block 10 at one end of the horizontal retaining plate 1, and a splicing groove 11 at the other end of the horizontal retaining plate 1 that matches and splices with the splicing block 10 of another horizontal retaining plate 1. The splicing block 10 of one horizontal retaining plate 1 matches the splicing groove 11 of another horizontal retaining plate 1, which facilitates splicing.

[0023] The support member 3 includes a limiting support block 12 disposed on the inner wall of the reinforcing connecting plate 4 and providing limiting support for the horizontal retaining plate 1. The limiting support block 12 can provide limiting support for the horizontal retaining plate 1.

[0024] The adjusting support rod assembly 5 also includes guide grooves 13 on both sides of the inner wall of the connecting sleeve plate 7. The connecting plate 8 is provided with guide sliders 14 that match the guide grooves 13. When adjusting the length of the connecting sleeve plate 7 and the connecting plate 8, the guide sliders 14 move inside the guide grooves 13, which improves the stability of the movement of the connecting plate 8 inside the connecting sleeve plate 7.

[0025] The limiting component 9 includes a fixing nut 15 at the top of the connecting sleeve 7. A locking screw 16 extending into the connecting sleeve 7 is threaded onto the fixing nut 15. A limiting clamping block 17 is provided at the inner end of the locking screw 16. When the locking screw 16 is rotated, the locking screw 16 is threadedly connected to the fixing nut 15. The locking screw 16 pushes the limiting clamping block 17 downward, and the limiting clamping block 17 clamps against the connecting plate 8, thus limiting the movement.

[0026] The limiting and tightening block 17 has multiple V-shaped blocks 18 on the side facing the connecting plate 8, and the connecting plate 8 has V-shaped grooves 19 that match the V-shaped blocks 18. The V-shaped blocks 18 and V-shaped grooves 19 are matched and engaged, which makes the connection stability between the connecting sleeve plate 7 and the connecting plate 8 higher.

[0027] During operation, this type of earthwork excavation pit protection device can splice two adjacent horizontal retaining plates 1 at the same height through the splicing parts 2. The reinforcing connecting plates 4 are used to press multiple horizontal retaining plates 1 tightly into the pit. The supporting parts 3 support the horizontal retaining plates 1. Then, the plug at the end of the adjusting support top rod assembly 5 is inserted into the plug groove of the reinforcing connecting plate 4. This makes the pit protection device simple in structure, easy to assemble and disassemble, and has high support stability, is not easy to be damaged, has a long service life, and is easy to operate.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An earth excavation foundation pit protection device, characterized in that, The utility model relates to a horizontal retaining board (1) is arranged in the foundation pit two sides, and the adjacent two horizontal retaining boards (1) of same height are connected through the splice (2), and the outer wall of multilayer horizontal retaining board (1) is connected with the reinforcing connecting plate (4) through the support (3), and at least two adjusting support top rod assemblies (5) are arranged between the corresponding two reinforcing connecting plates (4) in the foundation pit. The adjusting support top rod assembly (5) includes a connecting sleeve plate (7) arranged on one reinforcing connecting plate (4) and a connecting plate (8) arranged on the other reinforcing connecting plate (4) and extending into the connecting sleeve plate (7), the top end of the connecting sleeve plate (7) is provided with a limiting assembly (9) for limiting the connecting plate (8), and the end portions of the connecting sleeve plate (7) and the connecting plate (8) are connected on the two reinforcing connecting plates (4) through the plug-in head and the plug-in slot.

2. A soil excavation pit protection device according to claim 1, wherein The splice (2) includes a T-shaped splice block (10) arranged at one end of the horizontal retaining board (1), and the other end of the horizontal retaining board (1) is provided with a splice slot (11) matched with the splice block (10) of the other horizontal retaining board (1).

3. A soil excavation pit protection device according to claim 1, wherein The support (3) includes a limiting support block (12) arranged on the inner wall of the reinforcing connecting plate (4) and limiting and supporting the horizontal retaining board (1).

4. The earth excavation foundation pit protection device according to claim 1, wherein, The adjusting support top rod assembly (5) further includes guide sliding grooves (13) arranged on the inner wall of the connecting sleeve plate (7), and the connecting plate (8) is provided with guide sliding blocks (14) matched with the guide sliding grooves (13).

5. The earth excavation foundation pit protection device according to claim 1, wherein, The limiting assembly (9) includes a fixed nut (15) arranged at the top end of the connecting sleeve plate (7), and the fixed nut (15) is threadedly connected with a locking screw (16) extending into the connecting sleeve plate (7).

6. A soil excavation pit protection device according to claim 5, wherein The inner end portion of the locking screw (16) is provided with a limiting pressing block (17).

7. A soil excavation pit protection device according to claim 6, wherein The side of the limiting pressing block (17) facing the connecting plate (8) is provided with a plurality of V-shaped blocks (18), and the connecting plate (8) is provided with V-shaped grooves (19) matched with the V-shaped blocks (18).

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