Building foundation deep foundation pit excavation construction protection structure

Abstract

The building foundation deep foundation pit excavation construction protection structure comprises a horizontal plate, a containing frame is fixed to the bottom of one end of the horizontal plate, the containing frame is perpendicular to the horizontal plate, openings are formed in the bottom and the two sides of the containing frame, an extending frame is connected into the containing frame in a sliding mode, and the extending frame is connected with the horizontal plate in a sliding mode. The device comprises a horizontal plate and a stretching frame, contact plates are installed in the stretching frame at equal intervals, drill rods are connected to the surfaces of the contact plates in an inserted mode, the drill rods of the multiple sets of contact plates are arranged in an oblique line staggered mode, a winding assembly is arranged at the top of the horizontal plate, the winding assembly comprises a winding rod, and the winding rod is rotationally installed at the top of the horizontal plate through a bearing seat. Through cooperation of the winding assembly and the extending frame, the drill rod inserted into the contact plate can be driven to penetrate into a soil layer on the side face, fixing of the side face is completed, the insertion position can be selected according to the depth length, and therefore the stability after installation is improved, and the time for independent fixing of bolts is saved.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit protection technology, specifically a protective structure for deep foundation pit excavation construction of building foundations. Background Technology

[0002] During the construction of building foundation pits, in order to ensure construction safety and prevent collapse accidents, it is necessary to take support measures for the excavated building foundation pits. Most of the existing foundation pit protection structures can only protect fixed areas. However, as the depth of the foundation pit increases, it is necessary to continue to set up protection structures, which is quite troublesome. Moreover, most protection mechanisms are cumbersome to set up, install and use, resulting in low work efficiency.

[0003] Patent CN217078783U proposes a protective structure for deep foundation pit excavation. This structure features a base inserted into the upper end of a first protective plate, with a first limiting mechanism between the base and the first protective plate. This allows adjustment of the distance between the first protective plate and the side of the pit, ensuring the first protective plate fits snugly against the pit's side. The first limiting mechanism then secures the base and the first protective plate together, improving both protection and ease of adjustment. Alternatively, the first protective plate can be fitted onto the upper end of a second protective plate, with an adjustment mechanism and a second limiting mechanism between them. As the pit depth increases, releasing the second limiting mechanism and readjusting the adjustment mechanism lowers the second protective plate, thus protecting the bottom of the pit.

[0004] The problem with the above solution is that when the vertical extension length of the device is large, its protective capability will decrease. It is necessary to fix the side plates with an additional fixing structure, which is inconvenient and affects the protective capability and stability of the protective components. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a protective structure for deep foundation pit excavation in building construction, thereby solving the problems mentioned in the background technology. This utility model has a novel structure. The cooperation between the winding component and the extension frame can drive the drill rod inserted inside the contact plate to penetrate into the soil layer on the side, completing the side fixation. Moreover, the insertion position can be selected according to the depth, thereby improving the stability after installation and saving the time of individual bolt fixing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective structure for deep foundation pit excavation, comprising a horizontal plate, a storage frame fixed to the bottom of one end of the horizontal plate, the storage frame being perpendicular to the horizontal plate, openings on the bottom and sides of the storage frame, an extension frame slidably connected inside the storage frame, contact plates equidistantly installed inside the extension frame, drill rods inserted into the surface of the contact plates, and multiple sets of drill rods of the contact plates being arranged obliquely and staggered, a winding assembly provided at the top of the horizontal plate, the winding assembly including a winding rod, the winding rod being rotatably mounted on the top of the horizontal plate via a bearing seat, and a partition plate fixed on the surface of the winding rod corresponding to the position of each set of drill rods, a connecting rope provided at the outer end of the drill rod, and the other end of the connecting rope passing through the horizontal plate and connecting to the winding rod.

[0007] Furthermore, a positioning cone is slidably inserted into the front surface of the horizontal plate, an insert plate is fixed on one side of the horizontal plate, and a slot is provided on the other side of the horizontal plate.

[0008] Furthermore, the winding assembly also includes a protruding post, with a protruding post fixed between each set of partitions on the winding rod, and a collar fixed at the position where the connecting rope passes through the horizontal plate, and the collar slidingly sleeved on the protruding post.

[0009] Furthermore, a protrusion is fixed at one end of the winding rod, and an insertion hole is provided at the other end of the winding rod.

[0010] Furthermore, a unwinding shaft is fixed to the outer end of the drill rod, and the other end of the connecting rope is wound inside the unwinding shaft.

[0011] Furthermore, a screw cylinder is slidably inserted into the contact plate at the position where the drill rod passes through, and the outer surface of the drill rod is provided with threads. The drill rod is threadedly inserted into the inside of the screw cylinder, and the screw cylinder is fixedly connected to the inner wall of the protruding frame.

[0012] Furthermore, side plates are fixed on both sides of the protruding frame, and springs are fixed on the back of each set of contact plates corresponding to the side plates, with the other end of the springs fixedly connected to the contact plates.

[0013] Furthermore, a screw is rotatably mounted inside the storage frame via a bearing, and the protruding side of the frame is threaded onto the surface of the screw.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model allows the extension tube to extend along the bottom of the storage frame by rotating the screw inside the storage frame, and the extension length can be adjusted.

[0016] 2. In this invention, after the drill rod moves along the inside of the screw barrel and inserts into the soil layer from the front end of the contact plate, the part of the drill rod that contacts the contact plate will push the contact plate forward, causing the contact plate to move outward a certain distance and contact the soil layer on the side, thereby maintaining the fixation of the drill rod and the contact of the contact plate, improving the protective effect. According to the length of the extension plate and the number of contact plates, the corresponding collar of the connecting rope at the outer end of the drill rod is selected and fitted onto the protruding post. When the winding rod is rotated, the connecting rope will be wound up. Because the unwinding of the unwinding shaft will drive the rotation of the drill rod, and the drill rod is limited and guided by the screw barrel, multiple sets of drill rods can be inserted into the soil layer together.

[0017] 3. The horizontal plate of this utility model is fixed to the ground by a positioning cone. Through the cooperation of the insert plate and the slot, as well as the cooperation of the protrusion and the insertion hole of the winding rod, multiple sets of horizontal plates and winding rods can be connected. After the winding rods are connected, they can rotate synchronously, which is convenient for installation and fixation.

[0018] 4. Compared with the prior art, this utility model, through the cooperation of the winding assembly and the extension frame, can drive the drill rod inserted inside the contact plate to penetrate into the soil layer on the side, complete the side fixation, and can select the insertion position according to the depth, thereby improving the stability after installation and saving the time of fixing the bolts separately. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a protective structure for deep foundation pit excavation of a building according to the present invention.

[0020] Figure 2 This is a schematic diagram of one side of the horizontal plate and the winding rod of a protective structure for deep foundation pit excavation in a building according to this utility model.

[0021] Figure 3 This is a schematic diagram of the limited take-up component structure of a protective structure for deep foundation pit excavation in a building according to this utility model;

[0022] Figure 4 This is a schematic diagram showing the connection between the storage frame and the extension frame of a protective structure for deep foundation pit excavation in a building according to this utility model.

[0023] Figure 5 This is a schematic diagram of the surface structure of the contact plate of a protective structure for deep foundation pit excavation in a building according to the present invention.

[0024] In the diagram: 1. Horizontal plate; 11. Positioning cone; 12. Insert plate; 13. Slot; 2. Rewind assembly; 21. Rewind rod; 22. Insertion hole; 23. Protrusion; 24. Partition plate; 25. Protruding post; 26. Collar; 27. Connecting rope; 3. Storage frame; 31. Extension frame; 32. Contact plate; 33. Screw; 34. Screw barrel; 35. Drill rod; 36. Unwinding shaft; 37. Side plate; 38. Spring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Please see Figures 1 to 5 This utility model provides a technical solution: a protective structure for deep foundation pit excavation, including a horizontal plate 1. A storage frame 3 is fixed to the bottom of one end of the horizontal plate 1, and the storage frame 3 is perpendicular to the horizontal plate 1. The storage frame 3 has openings at its bottom and on both sides. An extension frame 31 is slidably connected inside the storage frame 3. Contact plates 32 are installed at equal intervals inside the extension frame 31. Drill rods 35 are inserted into the surface of the contact plates 32. The drill rods 35 of multiple sets of contact plates 32 are arranged obliquely and staggered. A winding assembly 2 is provided at the top of the horizontal plate 1. The device includes a take-up rod 21, which is rotatably mounted on the top of the horizontal plate 1 via a bearing seat. A partition 24 is fixed on the surface of the take-up rod 21 corresponding to the position of each set of drill rods 35. A connecting rope 27 is provided at the outer end of the drill rod 35, and the other end of the connecting rope 27 passes through the horizontal plate 1 and connects to the take-up rod 21. When using the device, the horizontal plane is placed on the horizontal plane of the pit, the storage frame 3 is placed on the side wall of the pit, and the extension frame 31 of an appropriate length is released according to the depth of the pit. The contact plate 32 is moved outward by controlling the take-up assembly 2, and the drill rod 35 is inserted into the side wall of the pit to maintain the stability of the device installation.

[0027] In this embodiment, a positioning cone 11 is slidably inserted into the front surface of the horizontal plate 1. A plate 12 is fixed on one side of the horizontal plate 1, and a slot 13 is provided on the other side of the horizontal plate 1. A protrusion 23 is fixed at one end of the winding rod 21, and an insertion hole 22 is provided at the other end of the winding rod 21. The horizontal plate 1 is fixed to the ground by the positioning cone 11. Through the cooperation of the plate 12 and the slot 13, and the cooperation of the protrusion 23 and the insertion hole 22 of the winding rod 21, multiple sets of horizontal plates 1 and winding rods 21 can be connected. After connection, the winding rods 21 can rotate synchronously, which is convenient for installation and fixation.

[0028] In this embodiment, the winding assembly 2 further includes a protruding post 25. A protruding post 25 is fixed between each set of partitions 24 corresponding to the winding rod 21. A collar 26 is fixed at the position where the connecting rope 27 passes through the horizontal plate 1, and the collar 26 is slidably sleeved on the protruding post 25. An unwinding shaft 36 is fixed to the outer end of the drill rod 35, and the other end of the connecting rope 27 is wound inside the unwinding shaft 36. A screw cylinder 34 is slidably inserted into the contact plate 32 at the position where the drill rod 35 passes through, and the outer surface of the drill rod 35 is threaded. The drill rod 35 is threadedly inserted into the screw cylinder 34. The screw cylinder 34 is fixedly connected to the inner wall of the extension frame 31. Side plates 37 are fixed to both sides of the extension frame 31, and a spring 38 is fixed to the back of each set of contact plates 32 corresponding to the side plates 37. The other end of the spring 38 is connected to the contact plate. The drill rod 35 and the contact plate 32 are in a fixed connection. The drill rod 35 and the contact plate 32 are actually in a squeezing contact. After the drill rod 35 moves along the inside of the screw barrel 34 and inserts into the soil layer from the front end of the contact plate 32, the part of the drill rod 35 that contacts the contact plate 32 will push the contact plate 32 forward, so that the contact plate 32 moves outward a certain distance and contacts the soil layer on the side, thereby maintaining the fixation of the drill rod 35 and the contact of the contact plate 32, improving the protection effect. According to the length of the extension plate and the number of contact plates 32, the collar 26 of the connecting rope 27 at the outer end of the corresponding drill rod 35 is selected and fitted onto the protruding post 25. When the winding rod 21 is rotated, the connecting rope 27 will be wound up. Because the unwinding of the unwinding shaft 36 will drive the rotation of the drill rod 35, and the drill rod 35 is limited and guided by the screw barrel 34, multiple sets of drill rods 35 can be inserted into the soil layer together.

[0029] In this embodiment, a screw 33 is rotatably mounted inside the storage frame 3 via a bearing, and the side of the protruding frame 31 is threaded onto the surface of the screw 33. By rotating the screw 33 inside the storage frame 3, the protruding tube and the screw 33 are threaded together and extend along the bottom of the storage frame 3, and the length of the extension can be adjusted.

[0030] When using the device, place the horizontal plane at the level of the foundation pit, and place the receiving frame 3 on the side wall of the foundation pit. Depending on the depth of the foundation pit, rotate the screw 33 built into the receiving frame 3. The extension tube, threaded with the screw 33, extends along the bottom of the receiving frame 3, and the extension length can be adjusted. The drill rod 35 and the contact plate 32 are actually in a squeezing contact. After the drill rod 35 moves along the inside of the screw cylinder 34 and inserts into the soil layer from the front end of the contact plate 32, the part of the drill rod 35 in contact with the contact plate 32 will push the contact plate 32 forward, causing the contact plate... 32 moves outward a certain distance to contact the soil layer on the side, thereby keeping the drill rod 35 fixed and the contact plate 32 in contact, improving the protection effect. According to the length of the extension plate and the number of contact plates 32, the collar 26 of the connecting rope 27 at the outer end of the drill rod 35 is selected and fitted onto the protruding post 25. When the winding rod 21 is rotated, the connecting rope 27 will be wound up. Because the unwinding of the unwinding shaft 36 will drive the rotation of the drill rod 35, and the drill rod 35 is limited and guided by the screw cylinder 34, multiple sets of drill rods 35 can be inserted into the soil layer together.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A protective structure for deep foundation pit excavation, comprising a horizontal slab (1), characterized in that: A storage frame (3) is fixed to the bottom of one end of the horizontal plate (1), and the storage frame (3) is set perpendicular to the horizontal plate (1). The storage frame (3) has openings at the bottom and on both sides. An extension frame (31) is slidably connected inside the storage frame (3). Contact plates (32) are installed at equal intervals inside the extension frame (31). Drill rods (35) are inserted into the surface of the contact plates (32). The drill rods (35) of multiple sets of contact plates (32) are arranged in an oblique staggered manner. The top of the horizontal plate (1) is provided with a winding assembly (2), which includes a winding rod (21). The winding rod (21) is rotatably mounted on the top of the horizontal plate (1) through a bearing seat. A partition (24) is fixed on the surface of the winding rod (21) corresponding to the position of each set of drill rods (35). The outer end of the drill rod (35) is provided with a connecting rope (27), and the other end of the connecting rope (27) passes through the horizontal plate (1) and connects to the winding rod (21).

2. The protective structure for deep foundation pit excavation construction according to claim 1, characterized in that: A positioning cone (11) is slidably inserted into the front surface of the horizontal plate (1), a plug plate (12) is fixed on one side of the horizontal plate (1), and a slot (13) is provided on the other side of the horizontal plate (1).

3. The protective structure for deep foundation pit excavation construction according to claim 1, characterized in that: The winding assembly (2) also includes a protruding post (25). The winding rod (21) is fixed with a protruding post (25) between each set of partitions (24). The connecting rope (27) is fixed with a collar (26) at the position where it passes through the horizontal plate (1), and the collar (26) is slidably sleeved on the protruding post (25).

4. The protective structure for deep foundation pit excavation construction according to claim 3, characterized in that: One end of the winding rod (21) is fixed with a protrusion (23), and the other end of the winding rod (21) is provided with an insertion hole (22).

5. The protective structure for deep foundation pit excavation construction according to claim 4, characterized in that: The outer end of the drill rod (35) is fixed with a unwinding shaft (36), and the other end of the connecting rope (27) is wound inside the unwinding shaft (36).

6. The protective structure for deep foundation pit excavation construction according to claim 5, characterized in that: The contact plate (32) is slidably inserted with a screw cylinder (34) at the position where the drill rod (35) passes through, and the outer surface of the drill rod (35) is provided with threads. The drill rod (35) is threadedly inserted into the screw cylinder (34), and the screw cylinder (34) is fixedly connected to the inner wall of the protruding frame (31).

7. The protective structure for deep foundation pit excavation construction according to claim 6, characterized in that: Side plates (37) are fixed on both sides of the protruding frame (31), and springs (38) are fixed on the back of each group of contact plates (32) corresponding to the side plates (37), and the other end of the springs (38) is fixedly connected to the contact plates (32).

8. The protective structure for deep foundation pit excavation construction according to claim 1, characterized in that: The storage frame (3) has a screw (33) mounted inside by a bearing, and the side of the protruding frame (31) is threaded onto the surface of the screw (33).

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