Foundation pit collapse prevention device

Abstract

The utility model discloses an anti-collapse device for a foundation pit. The wall protecting device comprises a supporting frame, a stabilizing structure and a wall protecting structure. The whole supporting frame is in a Z shape. The stabilizing structures are arranged at the upper end and the lower end of the supporting frame and provided with bottom inserting plates and top inserting plates, and the supporting frame is firmly supported on the foundation pit wall through the bottom inserting plates and the top inserting plates. The wall protection structure is arranged on one side, perpendicular to the outer wall, of the supporting frame and provided with a stud capable of pushing the top wall plate to be firmly attached to the foundation pit wall. The supporting frame can be firmly attached to the foundation pit wall by installing the stabilizing structure on the supporting frame, the top wall plate of the wall protection structure is attached to the foundation pit wall, and the stud is screwed to abut against the top inserting plate, so that the effect of large-area attaching and supporting on the foundation pit wall is achieved, the attaching and supporting strength of the supporting frame on the foundation pit wall is integrally improved, and the service life of the supporting frame is prolonged. The probability that the supporting frame inclines and loosens due to the pre-collapse acting force of the foundation pit wall is reduced, and therefore the overall supporting effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit wall supporting devices, in particular to a foundation pit anti-collapse device. Background Art

[0002] The foundation pit is a pit dug at the design location of the foundation according to the base elevation and the plane size of the foundation. Before excavation, the excavation plan should be determined based on geological and hydrological data and the situation of nearby buildings on site, and waterproofing and drainage work should be done. If the excavation is not deep, the slope can be used to stabilize the slope, and the slope size is determined according to relevant construction regulations. For deep excavations and nearby buildings, the foundation pit wall support method and shotcrete wall protection method can be used. Large foundation pits can even use underground continuous walls and column-type bored pile interlocking methods to prevent the outer soil layer from collapsing; if there is no impact on nearby buildings, the well point method can be used to lower the groundwater level and use slope open excavation; in cold areas, natural cold air freezing method can be used for excavation, etc.

[0003] A current foundation pit anti-collapse device, as described in the patent with announcement number: CN220035447U, comprises: a protective plate and a first connecting block, the left side of the protective plate is fixedly connected to the first connecting block, the right side of the protective plate is fixedly connected to the second connecting block, the left top of the first connecting block is fixedly connected to a limiting block, the bottom left side of the limiting block is fixedly connected to an insert block, the right top of the second connecting block is provided with a limiting groove, and the bottom left side of the limiting groove is provided with a slot.

[0004] With respect to the above-mentioned related technologies, the applicant believes that although a foundation pit anti-collapse device can conveniently disassemble the protective plate on the first connecting block and the second connecting block when in use, since the inner sides of the first connecting block and the second connecting block are in direct contact with the inner wall of the foundation pit, and the protective plate is located in the middle position of the first connecting block and the second connecting block, the outer wall of the protective plate is not sufficiently supported in contact with the inner wall of the foundation pit. In addition, the first connecting block and the second connecting block are only stabilized by the fixed piles inserted into the soil layer below. Under the force of foundation pit collapse, the fixed piles will tilt and loosen, thereby reducing the effect of the device on the overall anti-collapse support of the foundation pit. Utility Model Content

[0005] The purpose of the utility model is to provide a foundation pit anti-collapse device to solve the problems of the device proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foundation pit anti-collapse device, comprising: a support frame, a stabilizing structure and a retaining wall structure; the overall shape of the support frame is a Z shape; the stabilizing structure is arranged at the upper and lower ends of the support frame, and the stabilizing structure has a bottom plug plate and a top plug plate that firmly support the support frame on the foundation pit wall; the retaining wall structure is arranged on one side of the vertical outer wall of the support frame, and the retaining wall structure has studs that can push the top wall plate to fit firmly on the foundation pit wall.

[0007] By adopting the above technical solution and installing a stable structure on the support frame, the support frame can be firmly attached to the wall of the foundation pit under the fixation of the bottom plug plate and the top plug plate, and the top wall plate of the retaining wall structure is attached to the wall of the foundation pit and is tightened and abutted against the top plug plate by studs, thereby achieving the effect of supporting the foundation pit wall over a large area, thereby improving the effect of the device in preventing the foundation pit from collapsing as a whole.

[0008] Preferably, the stabilizing structure includes a bottom plug plate welded to the lower surface of the bottom end of the support frame, a socket opened on the vertical outer wall of the support frame and a side plug plate plugged into the socket, and the bottom plug plate and the bottom end of the support frame are placed in a groove dug at the bottom of the foundation pit.

[0009] By adopting the above technical solution, by placing the bottom end of the support frame in a groove dug at the bottom of the foundation pit, the bottom plug plate can be inserted into the soil layer to increase the bearing capacity of the bottom end, and the side plug plate can be inserted into the foundation pit wall, and connection points can be set at right angles at the bottom of the foundation pit, thereby increasing the firmness of the bottom end of the support frame.

[0010] Preferably, the stabilizing structure further comprises a hanging ring welded to the upper surface of the top of the support frame, a top plug plate plugged into the top plane of the foundation pit, and a cable hung on the hanging ring and the top of the top plug plate, wherein the cable is in a straightened state after being hung.

[0011] By adopting the above technical solution, by driving a top plug plate into the soil layer on the horizontal plane at the top of the foundation pit, and using a cable to connect the top plug plate to the top of the support frame, a pulling force can be provided for the top of the support frame. With the cooperation of the bottom plug plate structure at the bottom end, the overall strength of the support frame in contact with the foundation pit wall can be improved, and the probability of the support frame tilting and loosening due to the pre-collapse force of the foundation pit wall can be reduced, thereby improving the overall support effect.

[0012] Preferably, the guard wall structure includes a threaded ring welded on the vertical outer wall of the support frame, a stud threaded in the threaded ring, and a top wall plate inserted in a channel formed by the outer wall of the support frame and the foundation pit wall, and one end of the stud is tightened and abutted against one side outer wall of the top wall plate.

[0013] By adopting the above technical solution, the top wall panel is inserted into the gap formed by the support frame and the foundation pit wall. As the studs are continuously tightened on the threaded ring, the top wall panel can be abutted against the foundation pit wall, so that the top wall panel and the foundation pit wall fit closely, increasing the support force area and improving the overall effect of the device on preventing foundation pit collapse.

[0014] Preferably, the retaining wall structure further comprises a limiting ring welded on the outer wall of the top wall plate, one end of the stud abuts against the inside of the limiting ring, and the top wall plate is provided with four groups of limiting rings corresponding to the corresponding studs one by one.

[0015] By adopting the above technical solution, by welding a limit ring corresponding to the stud on the top wall panel, the limit ring can be used to prevent the top wall panel from moving randomly, so that the top wall panel is limited and cannot move to both sides, thereby supporting the foundation pit in a stable state to prevent collapse.

[0016] Preferably, one end of the side plug plate is plugged into the inside of the foundation pit wall, and the bottom of the top wall plate is pressed on the upper surface of the side plug plate.

[0017] By adopting the above technical solution, by inserting the side plug plates into the soil layer of the foundation pit wall, not only can the bottom end of the support frame be fixed to improve stability, but it can also serve as a support point for the bottom end of the top wall plate, and the top wall plate can be pushed against the foundation pit wall by the studs on the upper surface of the side plug plates.

[0018] Preferably, the outer wall of the bottom end of the support frame is welded with reinforcing ribs at right angles, and the outer wall of the top wall plate is welded with reinforcing ribs in a grid shape.

[0019] By adopting the above technical solution, by welding reinforcing ribs at right angles to the bottom end of the support frame, the overall force-bearing strength of the support frame can be improved. At the same time, by welding grid-shaped reinforcing ribs on one side of the top wall panel, a reinforced structure with uniform force can be formed, which can reduce the probability of deformation of the top wall panel when the force is uneven.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) By installing a stable structure on the support frame, the support frame can be firmly attached to the foundation pit wall. The top wall plate of the retaining wall structure is attached to the foundation pit wall, and the studs are tightened to abut against the top plug plate, thereby achieving the effect of supporting the foundation pit wall over a large area, improving the overall strength of the support frame on the foundation pit wall, and reducing the probability of the support frame tilting and loosening due to the pre-collapse force of the foundation pit wall, thereby improving the overall support effect;

[0022] (2) By driving a top plug plate into the soil layer on the horizontal plane at the top of the foundation pit and connecting the top plug plate to the top of the support frame with a tension cable, the top of the support frame can be provided with a tensile force to bear. When fixed with the bottom plug plate and the side plug plate at the bottom, the support frame can be firmly supported on the foundation pit wall, thereby reducing the probability of the support frame tilting and loosening due to the pre-collapse force of the foundation pit wall, thereby improving the overall support and anti-collapse effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Figure 1 It is a schematic diagram of the overall structure of the device of the utility model;

[0025] Figure 2 This is a schematic diagram of the stable structure of the utility model;

[0026] Figure 3 It is an exploded view of the stable structure and the retaining wall structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the connection between the support frame and the top wall plate of the utility model;

[0028] Figure 5 It is a schematic diagram of the cable connection of the utility model.

[0029] In the figure: 1. support frame; 2. stable structure; 201. bottom plug plate; 202. plug hole; 203. side plug plate; 204. hanging ring; 205. top plug plate; 206. cable; 3. wall protection structure; 301. threaded ring; 302. stud; 303. top wall plate; 304. limit ring; 4. reinforcing ribs. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The following is combined with Figure 1-5 The utility model is described in further detail.

[0032] Embodiment 1

[0033] See also Figures 1 to 5 The utility model provides an embodiment: a foundation pit anti-collapse device, comprising: a support frame 1, a stabilizing structure 2 and a retaining wall structure 3. The above structure can achieve the effect of supporting the foundation pit wall over a large area, and improve the strength of the support frame 1 supporting the foundation pit wall as a whole. The overall shape of the support frame 1 is a Z shape, and the Z shape of the support frame 1 can better fit the foundation pit wall for fixing. The stabilizing structure 2 is arranged at the upper and lower ends of the support frame 1, and the stabilizing structure 2 has the function of firmly supporting the support frame 1. The bottom plug plate 201 and the top plug plate 205 on the foundation pit wall can be fixed by the bottom plug plate 201 and the top plug plate 205 so that the support frame 1 can be firmly attached to the foundation pit wall. The retaining wall structure 3 is arranged on one side of the vertical outer wall of the support frame 1. The retaining wall structure 3 has studs 302 that can push the top wall plate 303 to firmly fit the foundation pit wall. The top wall plate 303 of the retaining wall structure 3 is attached to the foundation pit wall and is tightened and abutted against the top plug plate 205 by the studs 302, thereby achieving the function of supporting the foundation pit wall over a large area.

[0034] Embodiment 2

[0035] See also Figure 2 and Figure 3 The stabilizing structure 2 includes a bottom plug plate 201 welded to the lower surface of the bottom end of the support frame 1. Two groups of bottom plug plates 201 are welded to the lower surface of the bottom end of the support frame 1. The bottom plug plates 201 can be inserted into the soil layer at the bottom of the foundation pit. In combination with the right-angled support structure at the bottom, the strength of the support frame 1 fixed in the foundation pit can be improved. A plug hole 202 is provided on the vertical outer wall of the support frame 1. The plug hole 202 is provided at both ends of the vertical outer wall. The side plug plates 203 are plugged into the inside of the plug hole 202. The side plug plates 203 can be inserted from the plug hole 202 into the soil layer of the foundation pit wall to further fix the bottom end of the support frame 1. The bottom ends of 201 and the support frame 1 are placed in the groove dug out at the bottom of the foundation pit. By digging a groove in advance with the same shape as the bottom end of the support frame 1, the bottom plug plate 201 can be inserted into it so that the bottom end is flush with the bottom of the foundation pit, reducing the impact of the installation of the support frame 1 on the space in the foundation pit. The stabilizing structure 2 also includes a hanging ring 204 welded to the upper surface of the top of the support frame 1. The hanging ring 204 is welded to the upper surface of the top of the support frame 1 and plugged into a top plug plate 205 on the top plane of the foundation pit. The top plug plate 205 exists independently and can be inserted into the soil layer at the top of the foundation pit, so that the top plug plate 205 forms a force-bearing point;

[0036] See also Figure 2 and Figure 3, the cable 206 hung on the top of the hanging ring 204 and the top plug plate 205, by using the cable 206, the top plug plate 205 can be connected to the hanging ring 204, and the top of the support frame 1 can be pulled to support the soil layer at the top of the foundation pit wall to prevent collapse. The cable 206 is in a straight state after being hung. By pulling and fixing the cable 206 in a straight state, the top of the top plug plate 205 has a certain thrust on the top of the foundation pit wall, thereby improving the support strength. The retaining wall structure 3 includes a threaded ring 301 welded to the vertical outer wall of the support frame 1. The threaded ring 301 is welded at both ends of the outer wall of the support frame 1. The stud 302 is connected to the threaded ring 301, and the stud 302 can be threadedly connected to the threaded ring 301, and one end of the stud 302 is provided with a hexagonal groove, which is convenient for using a tool to insert the hexagonal groove and rotate and tighten the stud 302, and insert the top wall plate 303 in the channel formed by the outer wall of the support frame 1 and the foundation pit wall. One end of the stud 302 is tightened and abutted against the outer wall of one side of the top wall plate 303. After tightening the stud 302, one end of the stud 302 will abut against the top wall plate 303, so that the top wall plate 303 is firmly attached to the foundation pit wall, thereby increasing the force-bearing area and improving the support and anti-collapse effect.

[0037] Embodiment 3

[0038] See also Figures 2 to 4 The retaining wall structure 3 also includes a limiting ring 304 welded on the outer wall of the top wall plate 303, one end of the stud 302 abuts against the ring of the limiting ring 304, and the top wall plate 303 is provided with four groups of limiting rings 304 corresponding to the corresponding studs 302. By welding the limiting rings 304 corresponding to the studs 302 on the top wall plate 303, the limiting rings 304 can be used to prevent the top wall plate 303 from moving randomly, so that the top wall plate 303 is limited and cannot move to both sides, thereby supporting the foundation pit in a stable state to prevent collapse. One end of the side plug plate 203 is plugged into the inside of the foundation pit wall, and the bottom of the top wall plate 303 is pressed on the upper surface of the side plug plate 203. By 03 is inserted into the soil layer of the foundation pit wall, which can not only fix the bottom end of the support frame 1 to improve stability, but also serve as a supporting point for the bottom end of the top wall plate 303. The top wall plate 303 can be pushed against the foundation pit wall by the stud 302 on the upper surface of the side plug plate 203. The outer wall of the bottom end of the support frame 1 is welded with a reinforcing rib 4 at a right angle, and the outer wall of the top wall plate 303 is welded with a grid-shaped reinforcing rib 4. By welding the reinforcing rib 4 at a right angle to the bottom end of the support frame 1, the overall force-bearing strength of the support frame 1 can be improved. At the same time, the grid-shaped reinforcing rib 4 is welded on one side of the top wall plate 303 to form a reinforced structure with uniform force, which can reduce the probability of deformation of the top wall plate 303 when the force is uneven.

[0039] Working principle: When in use, first dig a groove at the bottom of the foundation pit to be supported, place the support frame 1 suitable for the depth of the foundation pit against the foundation pit wall, insert the bottom plug plate 201 at the bottom into the soil layer of the groove, insert the side plug plate 203 from the socket 202 into the soil layer of the foundation pit wall, insert the top plug plate 205 into the soil layer at the top of the foundation pit, use the cable 206 to connect the hanging ring 204 and the top plug plate 205, the top of the support frame 1 can be firmly fixed, and then the top wall plate 303 is inserted into the gap formed by the support frame 1 and the foundation pit wall, align the limit ring 304 with the stud 302, use a hexagonal wrench to tighten the stud 302 on the threaded ring 301, so that one end of the stud 302 is firmly against the top wall plate 303 to complete the assembly on the foundation pit wall.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A foundation pit anti-collapse device, characterized in that: include: A support frame (1), wherein the overall shape of the support frame (1) is a Z-shape; A stabilizing structure (2), the stabilizing structure (2) being arranged at the upper and lower ends of the support frame (1), the stabilizing structure (2) comprising a bottom plugging plate (201) and a top plugging plate (205) for firmly supporting the support frame (1) on the foundation pit wall; A retaining wall structure (3) is arranged on one side of the vertical outer wall of the support frame (1), and the retaining wall structure (3) has studs (302) that can push the top wall plate (303) to fit firmly on the foundation pit wall.

2. A foundation pit anti-collapse device according to claim 1, characterized in that: The stabilizing structure (2) comprises a bottom plug plate (201) welded to the lower surface of the bottom end of the support frame (1), a plug hole (202) provided on the vertical outer wall of the support frame (1), and a side plug plate (203) plugged into the plug hole (202), wherein the bottom plug plate (201) and the bottom end of the support frame (1) are placed in a groove dug out at the bottom of the foundation pit.

3. A foundation pit anti-collapse device according to claim 2, characterized in that: The stabilizing structure (2) further comprises a hanging ring (204) welded to the upper surface of the top of the support frame (1), a top plug plate (205) plugged into the top plane of the foundation pit, and a cable (206) hung on the hanging ring (204) and the top of the top plug plate (205); the cable (206) is in a stretched state after being hung.

4. The foundation pit anti-collapse device according to claim 1, characterized in that: The retaining wall structure (3) comprises a threaded ring (301) welded to the vertical outer wall of the support frame (1), a stud (302) threadedly connected to the threaded ring (301), and a top wall plate (303) inserted into a channel formed by the outer wall of the support frame (1) and the foundation pit wall, and one end of the stud (302) is screwed and abutted against one side outer wall of the top wall plate (303).

5. A foundation pit anti-collapse device according to claim 4, characterized in that: The retaining wall structure (3) further comprises a limiting ring (304) welded to the outer wall of the top wall plate (303), one end of the stud (302) abuts against the inside of the limiting ring (304), and the top wall plate (303) is provided with four groups of limiting rings (304) corresponding to the corresponding studs (302) one by one.

6. A foundation pit anti-collapse device according to claim 2 or 3, characterized in that: One end of the side plug plate (203) is plugged into the interior of the foundation pit wall, and the bottom of the top wall plate (303) is pressed onto the upper surface of the side plug plate (203).

7. The foundation pit anti-collapse device according to claim 3, characterized in that: The outer wall of the bottom end of the support frame (1) is welded with reinforcing ribs (4) at right angles, and the outer wall of the top wall plate (303) is welded with reinforcing ribs (4) in a grid shape.

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