Sand backfill protection structure for foundation pit

Abstract

The utility model relates to the technical field of protection structure discloses foundation pit sandy soil backfill protection structure, including protection board no.

Description

Technical Field

[0001] This utility model relates to the field of protective structure technology, and in particular to a protective structure for backfilling foundation pits with sand. Background Technology

[0002] In construction, municipal engineering and other fields, backfilling of foundation pits with sand is a common construction process. During this process, sand is prone to overflow and collapse due to lateral pressure, which not only affects the construction progress, but may also threaten the safety of surrounding facilities and personnel. Foundation pit sand backfill protection structures can effectively prevent sand overflow, maintain the stability of the foundation pit, and provide a safe working environment for backfilling construction.

[0003] In existing technologies, the protection of backfilled sand in foundation pits mostly adopts fixed baffle structures, which are usually made of several wooden or steel plates spliced ​​together. The baffle is fixed to the edge of the foundation pit by driving in wooden or steel piles. The technical principle is mainly to use the strength of the baffle itself to resist the lateral pressure of the sand.

[0004] However, existing foundation pit sand backfill protection structures have fixed and unadjustable support strength, making it difficult to adapt to changes in sand lateral pressure at different stages. When sand pressure increases, insufficient support can easily lead to deformation or even failure of the protection structure, making it unable to reliably resist sand lateral pressure. Therefore, a foundation pit sand backfill protection structure is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a protective structure for backfilling foundation pits with sand, aiming to improve the problems in the existing technology where the support strength is fixed and cannot be adjusted, making it difficult to adapt to changes in the lateral pressure of sand at different stages and unable to reliably resist the lateral pressure of sand.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The foundation pit sand backfill protection structure includes a first protection plate and a second protection plate. The bottom of the first protection plate and the second protection plate are fixedly connected to a support plate. The top of the support plate is fixedly connected to a fixed frame. The fixed frame is slidably connected to a slider. The top of the slider is fixedly connected to a connecting frame. The connecting frame is provided with a support component. The first protection plate and the second protection plate are provided with a connecting component. The support assembly includes a support rod rotatably connected inside the connecting frame. One end of the support rod is rotatably connected to a connecting column. A sliding frame is fixedly connected to the outer wall of the connecting column. Both the connecting column and the sliding frame are slidably connected inside the protective plate. The fixed frame has multiple positioning holes inside. A threaded column is provided inside the fixed frame. The threaded column is threadedly connected to the positioning holes. A handwheel is fixedly connected to one end of the threaded column. The threaded column passes through the slider.

[0007] As a further description of the above technical solution: The connecting component includes a tenon block, which is disposed between the first protective plate and the second protective plate. Both the first and second protective plates have mortise grooves inside, and the tenon block is slidably connected inside the mortise grooves.

[0008] As a further description of the above technical solution: A corner connector is provided on one side of the second protective plate, and a positioning post is slidably connected inside the tenon block.

[0009] As a further description of the above technical solution: The tenon block is internally connected to a second positioning post, and the first positioning post and the second positioning post are respectively inserted inside the first protective plate and the second protective plate.

[0010] As a further description of the above technical solution: One end of the positioning post is fixedly connected to a connecting ring, and one end of the positioning post is fixedly connected to a connecting ring.

[0011] As a further description of the above technical solution: One end of the connecting ring is fixedly connected to a fixed post, and one end of the connecting ring is fixedly connected to a sliding post, which is slidably connected inside the fixed post.

[0012] As a further description of the above technical solution: Springs are fitted on the outer walls of the fixed column and the sliding column, and the two ends of the springs are respectively connected to the first connecting ring and the second connecting ring.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by rotating the handwheel, the threaded column is driven to slide out of the slider, and the slider is pulled to slide within the fixed frame. This causes the support rod in the connecting frame at the top of the slider to rotate, thereby driving the connecting column and the sliding frame to slide within the protective plate. This achieves the effect of flexible adjustment of the protective support angle and force, solving the problem that the support force is fixed and cannot be adjusted, making it difficult to adapt to the changes in the lateral pressure of sand at different stages and unable to reliably resist the lateral pressure of sand.

[0014] 2. In this utility model, the initial splicing is achieved by the tenon blocks between the first protective plate and the second protective plate sliding in the mortise groove. When the tenon blocks are inserted, the internal positioning pins one and two compress the springs. After aligning with the through holes, the spring force pushes the positioning pins one and two to slide in opposite directions and insert into the through holes. With the help of the corner connectors, the protective plates are quickly and stably connected and assembled. This solves the problems of the traditional protective plate connection method being complicated, having low splicing efficiency and weak connection, and being difficult to quickly build a protective structure around the foundation pit. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the foundation pit sand backfill protection structure proposed in this utility model; Figure 2 This is a schematic diagram of the top structure of the support plate of the foundation pit sand backfill protection structure proposed in this utility model; Figure 3 This is a schematic diagram of the support rod structure of the foundation pit sand backfill protection structure proposed in this utility model; Figure 4 This is a schematic diagram of the tenon block structure of the foundation pit sand backfill protection structure proposed in this utility model; Figure 5 This is a schematic diagram of the spring structure of the foundation pit sand backfill protection structure proposed in this utility model.

[0016] Legend: 1. Protective plate one; 2. Protective plate two; 3. Support plate; 4. Fixing frame; 5. Slider; 6. Threaded post; 7. Handwheel; 8. Connecting frame; 9. Support rod; 10. Connecting post; 11. Sliding frame; 12. Positioning hole; 13. Mortise and tenon; 14. Corner connector; 15. Tenon block; 16. Positioning post one; 17. Positioning post two; 18. Connecting ring one; 19. Connecting ring two; 20. Fixing post; 21. Sliding post; 22. Spring. Detailed Implementation

[0017] The technical solutions of the present utility model 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 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.

[0018] Reference Figures 1-3 An embodiment of this utility model provides a protective structure for backfilling foundation pits with sand, including a protective plate 1 and a protective plate 2, which can effectively cover the edge of the foundation pit and form the first protective barrier. The bottom of both the protective plate 1 and the protective plate 2 are fixedly connected to a support plate 3 to ensure that the protective plate is stably located on the edge of the foundation pit and to enhance the support foundation of the overall structure. The top of the support plate 3 is fixedly connected to a fixed frame 4, and a slider 5 is slidably connected inside the fixed frame 4. By changing its own position, the support angle of the support rod 9 can be adjusted, thereby changing the protective force. The top of the slider 5 is fixedly connected to a connecting frame 8, and a support component is provided inside the connecting frame 8. A connecting component is provided between the protective plate 1 and the protective plate 2. The support assembly includes a support rod 9, which is rotatably connected inside the connecting frame 8. One end of the support rod 9 is rotatably connected to a connecting column 10. A sliding frame 11 is fixedly connected to the outer wall of the connecting column 10. Both the connecting column 10 and the sliding frame 11 are slidably connected inside the protective plate 1. The fixed frame 4 has multiple positioning holes 12 inside. A threaded column 6 is provided inside the fixed frame 4. The threaded column 6 is threadedly connected inside the positioning holes 12. A handwheel 7 is fixedly connected to one end of the threaded column 6. The threaded column 6 passes through the slider 5. The multiple positioning holes 12 are evenly distributed along the length direction, providing multiple selectable positions for fixing the threaded column 6, thereby achieving locking of different sliding positions of the slider 5.

[0019] Reference Figure 1 , Figure 4 and Figure 5 The connecting component includes a tenon 15, which is positioned between protective plate 1 and protective plate 2. Both protective plate 1 and protective plate 2 have mortises 13 inside. The tenon 15 is slidably connected within the mortises 13, serving as a guide and initial positioning element during the assembly of the protective plates, ensuring precise alignment of protective plate 1 and protective plate 2 and preventing misalignment. A corner connector 14 is provided on one side of protective plate 2. Positioning post 16 and positioning post 27 are slidably connected inside the tenon 15, with conical ends to facilitate compression and contraction when the tenon 15 is inserted into the mortises 13. Both are respectively inserted into protective plate 1 and protective plate 2. Inside the perforation of the second protective plate 2, positioning pin 16 and positioning pin 27 are respectively installed inside the first protective plate 1 and the second protective plate 2. One end of positioning pin 16 is fixedly connected to connecting ring 18, and one end of positioning pin 27 is fixedly connected to connecting ring 29, providing a connection point for spring 22 so that the elastic force of spring 22 can be evenly applied to the positioning pin. One end of connecting ring 18 is fixedly connected to fixing pin 20, and one end of connecting ring 29 is fixedly connected to sliding pin 21. Sliding pin 21 is slidably connected inside fixing pin 20. Spring 22 is sleeved on the outer wall of fixing pin 20 and sliding pin 21. The two ends of spring 22 are connected to connecting ring 18 and connecting ring 29 respectively.

[0020] Working principle: When using this foundation pit sand backfill protection structure, the first protective plate 1 and the second protective plate 2 serve as the main protective components to prevent the sand from overflowing from the foundation pit. When it is necessary to adjust the protective support force, turn the handwheel 7 to drive the threaded column 6 to slide out of the slider 5. At this time, pull the slider 5 to slide in the fixed frame 4. The support rod 9 in the top connecting frame 8 of the slider 5 rotates, driving the connecting column 10 and the sliding frame 11 to slide in the first protective plate 1, changing the support angle and force of the support rod 9 to adapt to different sand lateral pressures. If the sand pressure changes, the handwheel 7 can be repeatedly adjusted to maintain the stability of the protective plate. During operation, the first protective plate 1 and the second protective plate 2 are stably placed on the edge of the foundation pit by the support plate 3. All components work together to resist the sand lateral pressure. When a protective structure needs to be built and connected, the tenon 15 between protective plate 1 and protective plate 2 slides in the mortise 13 inside both for initial splicing. The corner connector 14 on one side of protective plate 2 is used to surround and build another protective plate. When the tenon 15 is slid in, the inner walls of protective plate 1 and protective plate 2 will squeeze the positioning post 16 and positioning post 27 inside the tenon 15, forcing positioning post 16 to slide straight into the tenon 15. At the same time, positioning post 16 and positioning post 27 compress the spring 22 between them. When positioning post 16 and positioning post 27 are aligned with the through holes of protective plate 1 and protective plate 2, the elastic force of the spring 22 is released, pushing positioning post 16 and positioning post 27 to slide in the opposite direction and insert into the through holes of protective plate 1 and protective plate 2, completing the connection and assembly between the protective plates.

[0021] 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 protective structure for backfilling foundation pits with sand, comprising a first protective plate (1) and a second protective plate (2), characterized in that: The bottom of both the first protective plate (1) and the second protective plate (2) are fixedly connected to a support plate (3), the top of the support plate (3) is fixedly connected to a fixed frame (4), the inside of the fixed frame (4) is slidably connected to a slider (5), the top of the slider (5) is fixedly connected to a connecting frame (8), the inside of the connecting frame (8) is provided with a support component, and a connecting component is provided between the first protective plate (1) and the second protective plate (2); The support assembly includes a support rod (9), which is rotatably connected inside the connecting frame (8). One end of the support rod (9) is rotatably connected to a connecting column (10). A sliding frame (11) is fixedly connected to the outer wall of the connecting column (10). Both the connecting column (10) and the sliding frame (11) are slidably connected inside the protective plate (1). Multiple positioning holes (12) are provided inside the fixed frame (4). A threaded column (6) is provided inside the fixed frame (4). The threaded column (6) is threadedly connected inside the positioning hole (12). A handwheel (7) is fixedly connected to one end of the threaded column (6). The threaded column (6) passes through the slider (5).

2. The foundation pit sand backfill protection structure according to claim 1, characterized in that: The connecting component includes a tenon (15), which is disposed between the first protective plate (1) and the second protective plate (2). The first protective plate (1) and the second protective plate (2) are both provided with mortise grooves (13), and the tenon (15) is slidably connected inside the mortise grooves (13).

3. The foundation pit sand backfill protection structure according to claim 2, characterized in that: A corner connector (14) is provided on one side of the second protective plate (2), and a positioning post (16) is slidably connected inside the tenon block (15).

4. The foundation pit sand backfill protection structure according to claim 3, characterized in that: The tenon (15) is slidably connected to a second positioning post (17), and the first positioning post (16) and the second positioning post (17) are respectively inserted into the first protective plate (1) and the second protective plate (2).

5. The foundation pit sand backfill protection structure according to claim 4, characterized in that: One end of the positioning post one (16) is fixedly connected to the connecting ring one (18), and one end of the positioning post two (17) is fixedly connected to the connecting ring two (19).

6. The foundation pit sand backfill protection structure according to claim 5, characterized in that: One end of the first connecting ring (18) is fixedly connected to a fixed post (20), and one end of the second connecting ring (19) is fixedly connected to a sliding post (21). The sliding post (21) is slidably connected inside the fixed post (20).

7. The foundation pit sand backfill protection structure according to claim 6, characterized in that: Springs (22) are fitted on the outer walls of the fixed column (20) and the sliding column (21), and the two ends of the springs (22) are connected to the first connecting ring (18) and the second connecting ring (19) respectively.

Images