Foundation pit supporting structure for foundation pit excavation

By employing spring telescopic rods and rack and pinion mechanisms in the foundation pit support structure, flexible adjustment of the foundation pit support structure is achieved, solving the problem of poor adaptability in existing technologies and improving the fit and support effect of the foundation pit support.

CN223620918UActive Publication Date: 2025-12-02NORTHWEST NONFERROUS ENG CO LTD
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Patent Information

Application Number
CN202422879014.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-26
Publication Date
2025-12-02
Estimated Expiration
2034-11-26

AI Technical Summary

Technical Problem

The existing foundation pit support structure cannot be adjusted, resulting in poor adaptability when facing foundation pits of different shapes and sizes. It cannot fully fit the foundation pit wall, reducing the practicality of the device.

Method used

The foundation pit support structure, which includes a base plate and a U-shaped frame, is designed and implemented with a rotating locking block and a locking slot for an adjustable fixing plate. The U-shaped block is moved by a spring telescopic rod, and the assembly and angle adjustment of the device are achieved by combining a gear and rack mechanism, which improves the fit and adaptability of the support structure.

Benefits of technology

It enables flexible adjustment of the foundation pit support structure, which can adapt to foundation pits of different shapes and sizes, and improves the fit and support effect of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of foundation pit supporting, and discloses a foundation pit supporting structure for foundation pit excavation, which comprises a bottom plate and a U-shaped frame, the left side of the bottom plate is rotatably connected with a fixing plate, the front side and the rear side of the left end of the top of the outer wall of the bottom plate are rotatably connected with second clamping blocks, and the front side and the rear side of the bottom of the inner wall of the fixing plate are provided with clamping grooves. And a positioning plate is fixedly connected to the left side of the top end of the bottom plate, a spring telescopic rod is fixedly connected to the right side of the positioning plate, and a first U-shaped block is rotationally connected to the right end of the spring telescopic rod. According to the foundation pit supporting device, the second clamping block is rotated to be clamped with the clamping groove so that pressure can be applied to a foundation pit soil body, the first clamping block is rotated to be clamped with the U-shaped frame, the spring telescopic rod can adjust the pressure applying position and improve the attaching and supporting effect, the gear is rotated to drive the rack to move, the connecting groove and the connecting hook are clamped, and the mounting groove and the mounting rod are fixed. The device can be assembled, and the rotation amplitude and angle can be adjusted.
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Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, and in particular to a foundation pit support structure for foundation pit excavation. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plane dimensions. It has a specific location and shape and is excavated according to the foundation design requirements of the building or engineering structure. In order to facilitate the support of the excavation pit, an excavation pit support structure is needed.

[0003] Foundation pit support structures for foundation pit excavation refer to structures used during foundation pit excavation to ensure the safety and stability of the foundation pit and its surrounding environment. They consist of a support system, a retaining system, and connecting components. By resisting earth pressure, preventing soil collapse, and cutting off the seepage path of groundwater, they provide a safe working space for construction workers.

[0004] Currently available foundation pit support structures for foundation pit excavation provide support and fixation for the foundation pit by installing fixing plates inside the pit. However, in actual use, the fixing plates cannot be adjusted, resulting in poor adaptability when facing foundation pits of different shapes and sizes, and the inability to completely fit the foundation pit wall, thus reducing the practicality of the device. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a foundation pit support structure for foundation pit excavation, aiming to improve the problem of poor fit caused by the inability to adjust the support structure in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a foundation pit support structure for foundation pit excavation, comprising a base plate and a U-shaped frame. A fixing plate is rotatably connected to the left side of the base plate. A second locking block is rotatably connected to the front and rear sides of the top left end of the outer wall of the base plate. A locking groove is provided on the front and rear sides of the bottom of the inner wall of the fixing plate. The second locking block engages with the locking groove. A positioning plate is fixedly connected to the top left side of the base plate. A spring telescopic rod is fixedly connected to the right side of the positioning plate. A first U-shaped block is rotatably connected to the right end of the spring telescopic rod. A first locking block is provided on the top of the base plate. A first locking block is rotatably connected to the outer side of the first U-shaped block. The first locking block engages with the U-shaped frame. A telescopic plate is rotatably connected to the inner side of the first U-shaped block. A second U-shaped block is rotatably connected to the outer side of the telescopic plate. The outer side of the second U-shaped block is fixedly connected to the base plate. An assembly mechanism is provided on the inner side of the base plate. The assembly mechanism is used to assemble multiple devices.

[0007] As a further description of the above technical solution:

[0008] The assembly mechanism includes two gears, which are rotatably connected to the front and rear sides of the top inner wall of the base plate, respectively. Racks are slidably connected to both the front and rear sides of the inner wall of the base plate. The gears mesh with each other. A connecting groove is provided on the inner side of the rear rack and a connecting hook is provided on the outer side of the front rack. An installation groove is provided on the rear side of the outer wall of the fixing plate. An installation rod is fixedly connected to the front side of the outer wall of the base plate and engages with the installation groove.

[0009] As a further description of the above technical solution:

[0010] Mounting plates are fixedly connected to the front and rear sides of the bottom outer wall of the base plate, and brackets are fixedly connected to the outer side of the mounting plates.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the base plate is fixedly connected to handles on all four sides, and the outer side of each handle is fixedly connected to a protective sleeve.

[0013] As a further description of the above technical solution:

[0014] The base plate has handles rotatably connected to all four sides of its outer wall, and the left side of each handle passes through the fixing plate and is fixedly connected with screws.

[0015] As a further description of the above technical solution:

[0016] The base plate has sliding grooves on both the front and rear sides of its top, and the sliding grooves are slidably connected to the U-shaped frame.

[0017] As a further description of the above technical solution:

[0018] The top right end of the base plate is rotatably connected to both the front and rear sides, and the bottom of the two knobs passes through the base plate and is fixedly connected to the corresponding gears.

[0019] As a further description of the above technical solution:

[0020] Positioning blocks are fixedly connected to the front and rear sides of the right end of the base plate, and positioning holes are provided on the outer side of the positioning blocks.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by rotating the second locking block to engage with the locking slot, the extension and retraction of the spring telescopic rod can drive the first U-shaped block to move. Then, through the movement and rotation of the telescopic plate, the fixed plate is driven to rotate by the second U-shaped block, thereby increasing the pressure on the foundation pit soil. If the second locking block is not engaged with the locking slot, but the first locking block is rotated to engage with the U-shaped frame, the extension and retraction of the spring telescopic rod can adjust the pressure position of the foundation pit, and the support structure can be adjusted to improve the fit and support effect.

[0023] 2. In this utility model, the rack is moved by rotating the gear, which engages the connecting groove and connecting hook between different devices, and at the same time fixes the mounting groove and mounting rod. The device can then rotate along the mounting rod by extending and retracting the rack, thereby assembling the device and adjusting the rotation amplitude and angle after assembly. Attached Figure Description

[0024] Figure 1 This is a perspective view of a foundation pit support structure for foundation pit excavation proposed in this utility model;

[0025] Figure 2 This is a front view of a foundation pit support structure for foundation pit excavation proposed in this utility model;

[0026] Figure 3 This is a partial structural breakdown diagram of a foundation pit support structure for foundation pit excavation proposed in this utility model;

[0027] Figure 4 This is a diagram illustrating the assembly mechanism of a foundation pit support structure for foundation pit excavation proposed in this utility model;

[0028] Figure 5 This is a top view of a foundation pit support structure for foundation pit excavation proposed in this utility model.

[0029] Legend:

[0030] 1. Base plate; 2. Assembly mechanism; 201. Gear; 202. Rack; 203. Connecting groove; 204. Connecting hook; 205. Mounting groove; 206. Mounting rod; 3. Fixing plate; 4. Positioning plate; 5. Spring telescopic rod; 6. First U-shaped block; 7. First locking block; 8. U-shaped frame; 9. Telescopic plate; 10. Second U-shaped block; 11. Second locking block; 12. Locking groove; 13. Slide groove; 14. Knob; 15. Positioning block; 16. Positioning hole; 17. Handle; 18. Screw; 19. Grip; 20. Protective sleeve; 21. Mounting plate; 22. Bracket. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a foundation pit support structure for foundation pit excavation, including a base plate 1 and a U-shaped frame 8. A fixing plate 3 is rotatably connected to the left side of the base plate 1. A second locking block 11 is rotatably connected to the front and rear sides of the top left end of the outer wall of the base plate 1. A locking groove 12 is provided on the front and rear sides of the bottom of the inner wall of the fixing plate 3. The second locking block 11 engages with the locking groove 12. A positioning plate 4 is fixedly connected to the top left side of the base plate 1. A spring telescopic rod 5 is fixedly connected to the right side of the positioning plate 4. A first U-shaped block 6 is rotatably connected to the right end of the spring telescopic rod 5. A first locking block 7 is provided on the top of the base plate 1. A first locking block 7 is rotatably connected to the outer side of the first U-shaped block 6. The first locking block 7 engages with the U-shaped frame 8. A telescopic plate 9 is rotatably connected to the inner side of the first U-shaped block 6. A second U-shaped block 10 is rotatably connected to the outer side of the telescopic plate 9. The outer side of the second U-shaped block 10 is fixedly connected to the base plate 1. An assembly mechanism 2 is provided on the inner side of the base plate 1. The assembly mechanism 2 is used to assemble multiple devices.

[0033] Specifically, rotating the second locking block 11 engages with the locking slot 12. At this time, the extension and retraction of the spring telescopic rod 5 can drive the first U-shaped block 6 to move. At this time, the movement and rotation of the telescopic plate 9 can drive the fixed plate 3 to rotate through the second U-shaped block 10, thereby increasing the pressure applied to the foundation pit soil. If the second locking block 11 is not engaged with the locking slot 12, but the first locking block 7 is engaged with the U-shaped frame 8 by rotating it, the pressure position of the foundation pit can be adjusted by the extension and retraction of the spring telescopic rod 5.

[0034] Reference Figure 1 , Figure 2 and Figure 4 The assembly mechanism 2 includes two gears 201, which are rotatably connected to the front and rear sides of the top inner wall of the base plate 1, respectively. The front and rear sides of the inner wall of the base plate 1 are slidably connected to racks 202, and the gears 201 mesh with each other. The inner side of the rear rack 202 is provided with a connecting groove 203, and the outer side of the front rack 202 is provided with a connecting hook 204. The rear side of the outer wall of the fixing plate 3 is provided with an installation groove 205, and the front side of the outer wall of the base plate 1 is fixedly connected with an installation rod 206, which engages with the installation groove 205.

[0035] Specifically, rotating the gear 201 can drive the rack 202 to move. At this time, the connecting groove 203 between different devices is engaged with the connecting hook 204, and the mounting groove 205 is fixed with the mounting rod 206. This allows the device to rotate along the mounting rod 206 through the extension and retraction of the rack 202. This allows the device to be assembled and the rotation amplitude and angle after assembly to be adjusted.

[0036] Reference Figure 1 , Figure 2 and Figure 3 Mounting plates 21 are fixedly connected to the bottom front and rear sides of the outer wall of the base plate 1, and brackets 22 are fixedly connected to the outer side of the mounting plates 21; handles 19 are fixedly connected to the top four sides of the outer wall of the base plate 1, and protective sleeves 20 are fixedly connected to the outer side of the handles 19; handles 17 are rotatably connected to the four sides of the outer wall of the base plate 1, and screws 18 are fixedly connected to the left side of the handles 17 through the fixing plate 3.

[0037] Specifically, the mounting plate 21 and its bracket 22 can improve the fixation effect of the device to the ground, the handle 19 and its protective sleeve 20 can facilitate holding and adjusting the device, and the screw 18 can be inserted into the soil by turning the handle 17 to improve the support effect of the device.

[0038] Reference Figure 1 , Figure 4 and Figure 5 The top front and rear sides of the base plate 1 are provided with sliding grooves 13, which are slidably connected to the U-shaped frame 8; the top right end of the base plate 1 is rotatably connected with knobs 14, the bottom of the two knobs 14 penetrates the base plate 1 and is fixedly connected to the corresponding gears 201; the right end of the base plate 1 is fixedly connected with positioning blocks 15, and positioning holes 16 are provided on the outer side of the positioning blocks 15.

[0039] Specifically, the slide 13 can improve the stability of the U-shaped frame 8 when moving, the knob 14 can be turned to drive the gear 201 to rotate, and the threaded parts can be installed in the positioning hole 16 on the positioning block 15 to facilitate the installation and fixation of the device.

[0040] Working principle: Before using the device, first rotate the second locking block 11 to engage with the locking slot 12. At this time, the extension and retraction of the spring telescopic rod 5 can drive the first U-shaped block 6 to move. Then, through the movement and rotation of the telescopic plate 9, the second U-shaped block 10 drives the fixed plate 3 to rotate, thereby increasing the pressure on the foundation pit soil. If the second locking block 11 is not engaged with the locking slot 12, but the first locking block 7 is rotated to engage with the U-shaped frame 8, the pressure position of the foundation pit can be adjusted by the extension and retraction of the spring telescopic rod 5.

[0041] Rotating gear 201 can drive rack 202 to move. At this time, the connecting groove 203 between different devices is engaged with the connecting hook 204, and the mounting groove 205 is fixed with the mounting rod 206. Thus, the extension and retraction of rack 202 drives the device to rotate along mounting rod 206, thereby assembling the device and adjusting the rotation amplitude and angle after assembly.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foundation pit support structure for foundation pit excavation, comprising a base plate (1) and a U-shaped frame (8), characterized in that: A fixing plate (3) is rotatably connected to the left side of the base plate (1). A second locking block (11) is rotatably connected to the front and rear sides of the top left end of the outer wall of the base plate (1). A slot (12) is provided on the front and rear sides of the bottom of the inner wall of the fixing plate (3). The second locking block (11) engages with the slot (12). A positioning plate (4) is fixedly connected to the left side of the top of the base plate (1). A spring telescopic rod (5) is fixedly connected to the right side of the positioning plate (4). A first U-shaped block (6) is rotatably connected to the right end of the spring telescopic rod (5). (1) has a first locking block (7) on its top. The first locking block (7) is rotatably connected to the outer side of the first U-shaped block (6). The first locking block (7) engages with the U-shaped frame (8). The telescopic plate (9) is rotatably connected to the inner side of the first U-shaped block (6). The second U-shaped block (10) is rotatably connected to the outer side of the telescopic plate (9). The outer side of the second U-shaped block (10) is fixedly connected to the base plate (1). The assembly mechanism (2) is provided on the inner side of the base plate (1). The assembly mechanism (2) is used to assemble multiple devices.

2. The foundation pit support structure for foundation pit excavation according to claim 1, characterized in that: The assembly mechanism (2) includes two gears (201), which are rotatably connected to the front and rear sides of the top inner wall of the base plate (1). The front and rear sides of the inner wall of the base plate (1) are slidably connected to racks (202). The gears (201) mesh with each other. A connecting groove (203) is provided on the inner side of the rear rack (202), and a connecting hook (204) is provided on the outer side of the front rack (202). An installation groove (205) is provided on the rear side of the outer wall of the fixing plate (3). An installation rod (206) is fixedly connected to the front side of the outer wall of the base plate (1), and the installation rod (206) engages with the installation groove (205).

3. The foundation pit support structure for foundation pit excavation according to claim 1, characterized in that: Mounting plates (21) are fixedly connected to the front and rear sides of the bottom of the outer wall of the base plate (1), and brackets (22) are fixedly connected to the outer side of the mounting plates (21).

4. The foundation pit support structure for foundation pit excavation according to claim 1, characterized in that: A handle (19) is fixedly connected to the top of the outer wall of the base plate (1) on all four sides, and a protective sleeve (20) is fixedly connected to the outer side of the handle (19).

5. The foundation pit support structure for foundation pit excavation according to claim 1, characterized in that: The base plate (1) is rotatably connected to handles (17) on all four sides of its outer wall. The left side of the handle (17) passes through the fixing plate (3) and is fixedly connected to screws (18).

6. The foundation pit support structure for foundation pit excavation according to claim 1, characterized in that: The top front and rear sides of the base plate (1) are provided with sliding grooves (13), and the sliding grooves (13) are slidably connected to the U-shaped frame (8).

7. A foundation pit support structure for foundation pit excavation according to claim 2, characterized in that: The top right end of the base plate (1) is rotatably connected to both the front and rear sides of the base plate (1). The bottom of the two knobs (14) penetrates the base plate (1) and is fixedly connected to the corresponding gear (201).

8. The foundation pit support structure for foundation pit excavation according to claim 1, characterized in that: The base plate (1) has a positioning block (15) fixedly connected to both the front and rear sides of the right end, and a positioning hole (16) is provided on the outer side of the positioning block (15).