Foundation pit excavation supporting device for civil construction

Abstract

The utility model provides a foundation pit excavation supporting device for civil construction, which relates to the technical field of foundation pit excavation and comprises a main plate, one side of the top end of the main plate is rotatably connected with a first rotating column, a connecting block is fixed on the outer wall of the first rotating column, and a first fender is fixed at the top end of the connecting block. And a second mudguard is connected in the first mudguard in a sliding manner. Through the arrangement of a bolt, the main plate and the bottom end of a foundation pit are fixed, supporting and blocking are conducted through a first mud guard, a user rotates a rotating plate to drive a connecting column to rotate, so that a screw rod is driven to rotate, and a second mud guard ascends under limiting of a limiting block and a limiting groove; and through operation of a telescopic rod and cooperation of a first rotating column, the angle between the first fender and the main plate can be adjusted, adjustment is conducted according to the angle of the foundation pit wall, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit excavation, in particular to a foundation pit excavation supporting device for civil construction. Background Art

[0002] With the development of construction technology and the continuous development of urban underground space, there are more and more deep foundation pit projects for civil construction. In the construction of many deep foundation pit projects, we often encounter situations with large plane dimensions, complex geological conditions and strict deformation control. Engineering practice shows that when excavating deep foundation pits, we should not only consider factors such as the safety level of foundation pit support, geological conditions, foundation pit depth, surrounding environment, foundation pit plane dimensions and shape, construction site conditions, etc., but also analyze the foundation pit support form and construction technology from a technical and economic perspective.

[0003] At present, there is a foundation pit excavation support device for civil construction in the prior art. Common support methods mainly include: plate type, channel steel, steel sheet pile support, ground-anchored wall support, bored pile, micro pile, and mixing pile support. The traditional support structure has poor support stability effect, and the height of the mudguard cannot be adjusted. It cannot support foundation pits of different heights and has poor practicality. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that the traditional supporting structure has poor supporting stability, cannot adjust the height of the mudguard, cannot support foundation pits of different heights, and has poor practicality, and to propose a foundation pit excavation support device for civil construction.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a foundation pit excavation support device for civil construction, including a main board, a first rotating column is rotatably connected to one side of the top of the main board, a connecting block is fixed on the outer wall of the first rotating column, a first mudguard is fixed on the top of the connecting block, a second mudguard is slidably connected inside the first mudguard, a driving structure for driving the second mudguard to move is provided inside the first mudguard, a second rotating column is rotatably connected inside the main board, a support plate is fixed on the outer wall of the second rotating column, rotating parts are installed on the opposite ends of the main board and the first mudguard, and a telescopic rod is installed between the two rotating parts.

[0006] Preferably, the driving structure includes a screw disposed in the first fender, the second fender is threadedly connected to the screw, a limiting block is fixed at one end of the second fender, and a limiting groove matching the limiting block is provided on the inner wall of the first fender.

[0007] Preferably, a connecting column is fixed to the bottom end of the screw rod, and the bottom end of the connecting column passes through the bottom end of the first fender and is fixed with a rotating plate.

[0008] Preferably, a friction-enhancing sleeve is fixed on the outer wall of the rotating plate, a groove is formed at the bottom end of the first mudguard, and the connecting column and the rotating plate are both arranged in the groove.

[0009] Preferably, a slide groove matching the second fender is provided in the first fender, a bolt is provided in the main board, a clamping groove is provided at both ends of the second fender of the first fender, fixed plates are fixed on both sides of the top of the main board, the first rotating column is arranged between the two fixed plates, and both ends of the first rotating column are rotatably connected to the two fixed plates.

[0010] Preferably, an inner cavity is opened at the top of the main board, both ends of the second rotating column are rotatably connected to both ends of the inner wall of the inner cavity, a supporting grid is fixed in the support plate, and legs are fixed at the four corners of the top of the support plate.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] In the utility model, the main board is fixed to the bottom end of the foundation pit through the setting of bolts, and the first mudguard is used for support and blocking. When the user rotates the rotating plate, the connecting column is driven to rotate, thereby driving the screw to rotate, so that the second mudguard is raised under the limit of the limit block and the limit groove, thereby achieving the height adjustment of the support and blocking of the first mudguard and the second mudguard, and through the operation of the telescopic rod and the cooperation of the first rotating column, the first mudguard can adjust the angle between it and the main board, so as to be adjusted according to the angle of the foundation pit wall, which is more practical. The device can drive the support plate and the support grid to rotate and open by the user rotating the second rotating column, and smooth the height difference between it and the main board through the legs. When it rains, it is convenient for the user to move through the support plate and the support grid, and it is more stable when moving to avoid slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a foundation pit excavation support device for civil construction is proposed for the utility model;

[0014] Figure 2 A cross-sectional view of a foundation pit excavation support device for civil construction is proposed for the utility model;

[0015] Figure 3 The utility model provides a driving structure diagram of a foundation pit excavation support device for civil construction;

[0016] Figure 4 The utility model provides a mainboard structure schematic diagram of a foundation pit excavation support device for civil construction.

[0017] Legend: 1. Main board; 2. Fixed plate; 3. First rotating column; 4. Connecting block; 5. First mudguard; 6. Second mudguard; 7. Driving structure; 701. Screw; 702. Limiting block; 703. Limiting groove; 8. Slide groove; 9. Connecting column; 10. Rotating plate; 11. Friction-increasing sleeve; 12. Slot; 13. Rotating member; 14. Telescopic rod; 15. Bolt; 16. Inner cavity; 17. Second rotating column; 18. Support plate; 19. Support grid; 20. Leg; 21. Snap-in groove. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment 1, as Figure 1-4 As shown, the utility model provides a foundation pit excavation support device for civil construction, including a main board 1, a first rotating column 3 is rotatably connected to one side of the top of the main board 1, a connecting block 4 is fixed on the outer wall of the first rotating column 3, a first mudguard 5 is fixed on the top of the connecting block 4, a second mudguard 6 is slidably connected inside the first mudguard 5, a driving structure 7 for driving the second mudguard 6 to move is provided in the first mudguard 5, a second rotating column 17 is rotatably connected inside the main board 1, a supporting plate 18 is fixed on the outer wall of the second rotating column 17, a rotating member 13 is installed at the opposite ends of the main board 1 and the first mudguard 5, and a telescopic rod 14 is installed between the two rotating members 13.

[0021] The effect achieved by the entire embodiment 1 is that, through the operation of the driving structure 7, the top end of the second mudguard 6 can be driven to move out of the first mudguard 5 and rise, thereby adjusting the height of the support and blocking of the first mudguard 5 and the second mudguard 6, and through the operation of the telescopic rod 14 and the cooperation of the first rotating column 3, the first mudguard 5 can adjust the angle between it and the main board 1, so as to be adjusted according to the angle of the foundation pit wall, and the practicality is stronger. The device can drive the support plate 18 and the support grid 19 to rotate and open by the user rotating the second rotating column 17, and smooth out the height difference between it and the main board 1 through the support legs 20. When it rains, it is convenient for the user to move through the support plate 18 and the support grid 19, and it is more stable when moving to avoid slipping.

[0022] Embodiment 2, as Figure 1-4As shown, the driving structure 7 includes a screw rod 701 arranged in the first fender 5, the second fender 6 is threadedly connected to the screw rod 701, a limit block 702 is fixed to one end of the second fender 6, a limit groove 703 matching the limit block 702 is provided on the inner wall of the first fender 5, a connecting column 9 is fixed to the bottom end of the screw rod 701, the bottom end of the connecting column 9 passes through the bottom end of the first fender 5 and is fixed with a rotating plate 10, a friction increasing sleeve 11 is fixed to the outer wall of the rotating plate 10, a slot 12 is provided at the bottom end of the first fender 5, the connecting column 9 and the rotating plate 10 are both arranged in the slot 12, and the first fender 5 is provided with a screw rod 701. A slide groove 8 matching the second fender 6 is provided in the first fender 5, a bolt 15 is provided in the main board 1, and clamping grooves 21 are provided at both ends of the second fender 6 of the first fender 5. Fixed plates 2 are fixed on both sides of the top of the main board 1. The first rotating column 3 is arranged between the two fixed plates 2, and both ends of the first rotating column 3 are rotatably connected to the two fixed plates 2. An inner cavity 16 is provided at the top of the main board 1, and both ends of the second rotating column 17 are rotatably connected to both ends of the inner wall of the inner cavity 16. A supporting grid 19 is fixed in the support plate 18, and legs 20 are fixed at the four corners of the top of the support plate 18.

[0023] The effect achieved by the entire embodiment 2 is that, through the setting of the bolts 15, the main board 1 is fixed to the bottom end of the foundation pit, and supported and blocked by the first mudguard 5. The user rotates the rotating plate 10 to drive the connecting column 9 to rotate, thereby driving the screw 701 to rotate, so that the second mudguard 6 is raised under the limitation of the limit block 702 and the limit groove 703, thereby adjusting the support and blocking height of the first mudguard 5 and the second mudguard 6. Through the setting of the clamping groove 21, it is convenient to connect with other mudguards, which is more practical. Through the setting of the inner cavity 16, when the support plate 18 and the support grid 19 are not needed, they can be rotated into the inner cavity 16, do not take up space, and are more practical.

[0024] Working principle: When the device is in use, the main board 1 is fixed to the bottom end of the foundation pit through the setting of the bolts 15, and the first mudguard 5 is used for support and blocking. The user rotates the rotating plate 10 to drive the connecting column 9 to rotate, thereby driving the screw 701 to rotate, so that the second mudguard 6 rises under the limit of the limit block 702 and the limit groove 703, thereby adjusting the height of the support and blocking of the first mudguard 5 and the second mudguard 6, and through the operation of the telescopic rod 14 and the cooperation of the first rotating column 3, the first mudguard 5 can adjust the angle between it and the main board 1, so as to adjust it according to the angle of the foundation pit wall. The device can drive the support plate 18 and the support grid 19 to rotate and open by the user rotating the second rotating column 17, and smooth out the height difference between it and the main board 1 through the support legs 20. When it rains, it is convenient for the user to move through the support plate 18 and the support grid 19, and it is more stable when moving to avoid slipping.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A foundation pit excavation support device for civil construction, comprising a main board (1), characterized in that: A first rotating column (3) is rotatably connected to one side of the top of the main board (1), a connecting block (4) is fixed on the outer wall of the first rotating column (3), a first mudguard (5) is fixed on the top of the connecting block (4), a second mudguard (6) is slidably connected inside the first mudguard (5), a driving structure (7) for driving the second mudguard (6) to move is provided inside the first mudguard (5), a second rotating column (17) is rotatably connected inside the main board (1), a supporting plate (18) is fixed on the outer wall of the second rotating column (17), a rotating member (13) is installed at the opposite ends of the main board (1) and the first mudguard (5), and a telescopic rod (14) is installed between the two rotating members (13).

2. The foundation pit excavation support device for civil construction according to claim 1, characterized in that: The driving structure (7) comprises a screw (701) arranged in the first fender (5); the second fender (6) is threadedly connected to the screw (701); a limiting block (702) is fixed to one end of the second fender (6); and a limiting groove (703) matching the limiting block (702) is provided on the inner wall of the first fender (5).

3. The foundation pit excavation support device for civil construction according to claim 2, characterized in that: A connecting column (9) is fixed to the bottom end of the screw rod (701), and the bottom end of the connecting column (9) passes through the bottom end of the first fender (5) and is fixed to a rotating plate (10).

4. The foundation pit excavation support device for civil construction according to claim 3, characterized in that: A friction-enhancing sleeve (11) is fixed on the outer wall of the rotating plate (10), a groove (12) is provided at the bottom end of the first fender (5), and the connecting column (9) and the rotating plate (10) are both arranged in the groove (12).

5. The foundation pit excavation support device for civil construction according to claim 1, characterized in that: The first fender (5) is provided with a slide groove (8) matching with the second fender (6), the main board (1) is provided with a bolt (15), both ends of the second fender (6) of the first fender (5) are provided with a clamping groove (21), both sides of the top of the main board (1) are fixed with a fixing plate (2), the first rotating column (3) is arranged between the two fixing plates (2), and both ends of the first rotating column (3) are rotatably connected to the two fixing plates (2).

6. The foundation pit excavation support device for civil construction according to claim 1, characterized in that: An inner cavity (16) is provided at the top of the main board (1), both ends of the second rotating column (17) are rotatably connected to the two ends of the inner wall of the inner cavity (16), a supporting grid (19) is fixed in the support plate (18), and legs (20) are fixed at the four corners of the top of the support plate (18).

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