Civil foundation pit construction protection reinforcing support structure

Abstract

This utility model relates to the field of foundation pit protection technology and discloses a construction foundation pit protection and reinforcement support structure, including a connecting plate, a support frame, and a bidirectional moving mechanism. There are two connecting plates and two support frames. The left and right ends of the connecting plate are slidably inserted into the support frame. Multiple first fixing cones are fixed to the sides of the support frame. The bidirectional moving mechanism is installed on the connecting plate and connected to the two support frames. Each support frame is equipped with a top fixing mechanism. This utility model uses bidirectional self-locking screws to drive the support frame to expand outward and tighten against the foundation pit wall. Combined with the fixing cones embedding into the soil, the top mechanism presses and anchors the top of the pit. Installation is quick, self-locking is reliable, and it can quickly form an integrated and stable support, effectively preventing foundation pit collapse.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit protection technology, and in particular to a construction protection and reinforcement support structure for civil engineering foundation pits. Background Technology

[0002] Foundation pits are a crucial preliminary operation in underground construction of civil engineering projects, and the stability of their sidewalls directly affects construction safety, the safety of surrounding structures, and underground pipelines. In particular, vertical shaft-type and long and narrow foundation pits have limited working space and concentrated lateral soil pressure. Traditional support methods, such as welded steel frames, formwork supports, or anchor bolts, suffer from problems such as cumbersome installation, inconvenient adjustment, and poor fit.

[0003] Current foundation pit support structures are mostly of fixed dimensions, making them unsuitable for the rapid erection of foundation pits of varying widths. Their support relies heavily on rigid clamping, which is prone to loosening and slippage, failing to achieve a sustained self-locking stability. Furthermore, most supports only provide lateral support to the pit walls, lacking anchoring and compression of the soil at the top of the pit. Under conditions of rainwater infiltration and soil disturbance, this can easily lead to pit opening instability, slope slippage, and even localized collapse. Therefore, there is an urgent need to develop a civil engineering foundation pit construction protection and reinforcement support structure that utilizes bidirectional self-locking bolts to drive the support frame outwards and tighten it against the pit walls, combined with a fixed cone embedded in the soil, and a top mechanism to press and anchor the pit top. This structure should be quick to install, reliably self-locking, and able to rapidly form an integrated and stable support, effectively preventing foundation pit collapse. This would overcome the shortcomings of current applications and meet current needs. Utility Model Content

[0004] The purpose of this utility model is to provide a protective reinforcement support structure for civil engineering foundation pit construction, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A protective reinforcement support structure for civil engineering foundation pit construction includes a connecting plate, a support frame, and a bidirectional moving mechanism. There are two connecting plates and two support frames. Both ends of the connecting plate are slidably inserted into the support frame. Multiple first fixing cones are fixed to the sides of the support frame. The bidirectional moving mechanism is mounted on the connecting plate and connected to the two support frames. Each support frame is equipped with a top fixing mechanism. The bidirectional moving mechanism includes: a bidirectional self-locking screw, a first thread, a second thread, a first nut, a second nut, and a limiting rod. The bidirectional self-locking screw is rotatably connected to the connecting plate. The left half of the bidirectional self-locking screw has a first thread, and a first nut that mates with it is installed on the outer side of the first thread. The first nut is fixed to one support frame. The right half of the bidirectional self-locking screw has a second thread, and a second nut that mates with it is installed on the outer side of the second thread. The second nut is fixed to the other support frame. A limiting rod inserted into the connecting plate is fixed to both the first nut and the second nut. The first thread and the second thread have opposite directions of rotation.

[0006] Preferably, the limiting rod is slidably connected to the connecting plate, and the connecting plate is provided with a guide groove for the movement of the limiting rod.

[0007] Preferably, a rotating handle is fixed at the middle position of the bidirectional self-locking screw.

[0008] Preferably, the top fixing mechanism includes: guide pins, limiting plates, support plates, and second fixing cones. Multiple guide pins are fixed on the support frame, and a limiting plate is fixed to the top of each guide pin. A support plate is slidably connected between the multiple guide pins, and multiple second fixing cones are fixed to the lower side of the support plate.

[0009] The beneficial effects of this utility model are as follows: When using this civil engineering foundation pit construction protection and reinforcement support structure, the connecting plate and support frame are placed inside the foundation pit. Then, the rotating handle is turned, which drives the bidirectional self-locking screw to rotate. This rotation causes the first and second nuts to move towards each other, which in turn causes the two support frames to move towards each other. This ensures that the two support frames are tightly pressed against the inner wall of the foundation pit, and the first fixing cone is inserted into the soil, thus fixing the support frames in place. Then, the support plate and the second fixing cone are pressed downwards, pressing the support plate against the soil at the top of the foundation pit and inserting the second fixing cone into the soil. The two connecting plates and two support frames provide support for the foundation pit, preventing collapse. In summary, this utility model uses a bidirectional self-locking screw to drive the support frame to expand outwards and tighten against the foundation pit wall, combined with the fixing cone embedding into the soil. The top mechanism presses and anchors the top of the pit, resulting in quick installation, reliable self-locking, and the rapid formation of an integrated and stable support, effectively preventing foundation pit collapse. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0011] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0012] Figure 3 This is a schematic diagram showing the installation and use of this utility model.

[0013] Figure 4 This is a partial structural diagram of the present invention. Figure 1 .

[0014] Figure 5 This is a partial structural diagram of the present invention. Figure 2 .

[0015] Legend: 1. Connecting plate; 101. Guide groove; 2. Support frame; 3. First fixed cone; 4. Top fixing mechanism; 401. Guide pin; 402. Limiting plate; 403. Support plate; 404. Second fixed cone; 5. Bidirectional moving mechanism; 501. Bidirectional self-locking screw; 5011. Rotating handle; 502. First thread; 503. Second thread; 504. First nut; 505. Second nut; 506. Limiting rod. Detailed Implementation

[0016] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Specific implementation examples are given below.

[0018] See Figures 1-5In this embodiment of the utility model, a construction pit protection and reinforcement support structure includes a connecting plate 1, a support frame 2, and a bidirectional moving mechanism 5. There are two connecting plates 1 and two support frames 2. The left and right ends of the connecting plate 1 are slidably inserted into the support frame 2. Multiple first fixing cones 3 are fixed to the sides of the support frame 2. These first fixing cones 3 are inserted into the soil of the pit to fix the support frame 2, thus blocking the soil in the pit and preventing collapse. The bidirectional moving mechanism 5 is installed on the connecting plate 1 and connected to the two support frames 2. The bidirectional moving mechanism 5 drives the two support frames 2 to move towards each other. Each support frame 2 is equipped with a top fixing mechanism 4, which is inserted into the soil at the top of the pit. The bidirectional moving mechanism 5 includes: a bidirectional self-locking screw 501, a first thread 502, a second thread 503, a first nut 504, a second nut 505, and a limiting rod 506. The bidirectional self-locking screw 501 rotates... A rotating handle 5011 is fixed at the middle position of the bidirectional self-locking screw 501 connected to the connecting plate 1. The left half of the bidirectional self-locking screw 501 is provided with a first thread 502. A first nut 504 that mates with the first thread 502 is installed on the outside of the first thread 502. The first nut 504 is fixed to a support frame 2. The right half of the bidirectional self-locking screw 501 is provided with a second thread 503. A second nut 505 that mates with the second thread 503 is installed on the outside of the second thread 503. The second nut 505 is fixed to another support frame 2. A limiting rod 506 that is inserted into the connecting plate 1 is fixed on both the first nut 504 and the second nut 505. The limiting rod 506 is slidably connected to the connecting plate 1. The connecting plate 1 is provided with a guide groove 101 for the movement of the limiting rod 506. The first thread 502 and the second thread 503 have opposite directions of rotation, so that the first nut 504 and the second nut 505 move in opposite directions when the bidirectional self-locking screw 501 rotates.

[0019] The top fixing mechanism 4 includes: guide pins 401, limiting plates 402, support plates 403, and second fixing cones 404. Multiple guide pins 401 are fixed on the support frame 2. Each guide pin 401 has a limiting plate 402 fixed on its top. The support plates 403 are slidably connected between the multiple guide pins 401. Multiple second fixing cones 404 are fixed on the lower side of the support plates 403.

[0020] Working principle: When using this civil engineering foundation pit construction protection and reinforcement support structure, the connecting plate 1 and support frame 2 are placed inside the foundation pit. Then, the rotating handle 5011 is turned, which drives the bidirectional self-locking screw 501 to rotate. The rotation of the bidirectional self-locking screw 501 causes the first nut 504 and the second nut 505 to move towards each other. The first nut 504 and the second nut 505 then drive the two support frames 2 to move towards each other, thus tightly pressing the two support frames 2 against the inner wall of the foundation pit and inserting the first fixing cone 3 into the soil, thereby fixing the support frames 2 in place. Then, the support plate 403 and the second fixing cone 404 are pressed downwards, causing the support plate 403 to press against the soil at the top of the foundation pit and the second fixing cone 404 to insert into the soil. The two connecting plates 1 and the two support frames 2 provide support for the foundation pit, preventing collapse.

[0021] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A protective reinforcement and support structure for civil engineering foundation pit construction, characterized in that, The system includes a connecting plate (1), a support frame (2), and a bidirectional moving mechanism (5). There are two connecting plates (1) and two support frames (2). The left and right ends of the connecting plate (1) are slidably inserted into the support frame (2). Multiple first fixing cones (3) are fixed to the sides of the support frame (2). The bidirectional moving mechanism (5) is mounted on the connecting plate (1) and connected to the two support frames (2). Each support frame (2) is equipped with a top fixing mechanism (4). The bidirectional moving mechanism (5) includes: a bidirectional self-locking screw (501), a first thread (502), a second thread (503), a first nut (504), a second nut (505), and a limiting rod (506). The bidirectional self-locking screw (501) is rotatably connected to the connecting plate. On the connecting plate (1), the left half of the bidirectional self-locking screw (501) is provided with a first thread (502), and a first nut (504) that cooperates with it is installed on the outside of the first thread (502). The first nut (504) is fixed to a support frame (2). The right half of the bidirectional self-locking screw (501) is provided with a second thread (503), and a second nut (505) that cooperates with it is installed on the outside of the second thread (503). The second nut (505) is fixed to another support frame (2). A limiting rod (506) that is inserted into the connecting plate (1) is fixed on both the first nut (504) and the second nut (505). The first thread (502) and the second thread (503) have opposite directions of rotation.

2. The civil foundation pit construction protection and reinforcement support structure according to claim 1, characterized in that, The limiting rod (506) is slidably connected to the connecting plate (1), and the connecting plate (1) is provided with a guide groove (101) for the movement of the limiting rod (506).

3. The civil foundation pit construction protection and reinforcement support structure according to claim 1, characterized in that, A rotating handle (5011) is fixed at the middle position of the bidirectional self-locking screw (501).

4. The civil foundation pit construction protection and reinforcement support structure according to claim 1, characterized in that, The top fixing mechanism (4) includes: guide pin (401), limiting piece (402), support plate (403) and second fixing cone (404). Multiple guide pins (401) are fixed on the support frame (2). A limiting piece (402) is fixed on the top of each guide pin (401). A support plate (403) is slidably connected between the multiple guide pins (401). Multiple second fixing cones (404) are fixed on the lower side of the support plate (403).

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