A protective structure for deep foundation pit excavation of building structures

Abstract

This utility model relates to a protective structure for deep foundation pit excavation in building construction, belonging to the field of foundation pit support technology. It includes a base plate, with a protective plate rotatably installed on the outer side of the base plate. Two support rods are arranged between the base plate and the protective plate. Two fixing clamps are fitted around the outer periphery of each support rod, and a fixing component b is rotatably installed inside each fixing clamp. The fixing component b has a threaded groove inside. The beneficial effect of this utility model is that by adding a fixing component b, a threaded rod b, and a fixing component a below the support rod, the compressive strength of the support rod can be improved. Furthermore, the aforementioned support structure can form a triangular structure with the support rod, the protective plate, and the base plate, which can decompose the horizontal pressure into a component force along the axial direction of the support rod. This allows the fixing component b, the threaded rod b, and the fixing component a to work together to bear the force, thereby improving the stability of the entire support structure and further preventing the collapse of the soil on the sidewall of the foundation pit.

Description

Technical Field

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

[0002] Building construction engineering refers to the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, equipment, and interior and exterior decoration projects. During the construction of deep foundation pits for buildings, in order to facilitate the entry of operators into the deep foundation pit for work, it is necessary to set up support and protection structures in the foundation pit. Foundation pit support is a set of measures for supporting, reinforcing, and protecting the side walls and surrounding environment of the foundation pit in order to ensure the safety of underground structure construction and the surrounding environment of the foundation pit.

[0003] A search revealed a Chinese patent disclosure regarding a protective structure for deep foundation pit excavation in building construction (authorization announcement number CN214993903U). This structure includes a base plate with a hinged mounting plate. The mounting plate is detachably fitted with multiple protective plates that abut against the side walls of the foundation pit. The base plate is fixedly connected to multiple support plates that abut against the bottom wall of the foundation pit. Each support plate has multiple limiting components for fixing to the bottom wall of the foundation pit. Each support plate is hinged with a swing block, and each swing block is detachably fitted with a support rod. A pressing block is hinged to the end of the support rod away from the swing block. Multiple pressing blocks correspond one-to-one with multiple protective plates, and each protective plate is equipped with a fixing component for fixing the pressing blocks. This patented technology can stably support the protective plates using the support rods, providing stable support for the side walls of foundation pits with different inclination angles.

[0004] However, the above-mentioned device still has some drawbacks in actual use. The most obvious one is that the protective plate is supported by only a thin support rod. When there are large construction equipment moving or loading around the foundation pit, the lateral pressure increases significantly. The support rod, which is already under high stress, is more likely to break. Once the support rod breaks, it will not only cause the stability of the entire support structure to be lost instantly, but may also cause the collapse of the soil on the side wall of the foundation pit. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main purpose of this utility model is to provide a protective structure for deep foundation pit excavation construction of building foundations.

[0006] The technical solution of this utility model is as follows: a protective structure for deep foundation pit excavation of a building foundation, including a base plate, a protective plate rotatably installed on the outer side of the base plate, two support rods between the base plate and the protective plate, two fixing clamps sleeved on the outer periphery of each support rod, a fixing component b rotatably installed inside each fixing clamp, a threaded groove provided inside the fixing component b, a threaded rod b threadedly connected inside the threaded groove, a fixing component a rotatably connected to the end of the threaded rod b away from the fixing component b, a snap-fit ​​component rotatably connected to the bottom of the fixing component a, and a slot for cooperating with the snap-fit ​​component being opened inside the base plate.

[0007] By adopting the above technical solution, the compressive strength of the support rod can be improved through the support structure such as fastener b, threaded rod b, and fastener a. The support structure can form a triangular structure with the support rod, protective plate, and base plate, which can decompose the horizontal pressure into a component force along the axial direction of the support rod, so that the fastener b, threaded rod b, and fastener a can work together to bear the force.

[0008] In a preferred embodiment, an adjustment assembly is provided on the top of the base plate. The adjustment assembly includes two mounting boxes fixedly connected to the top of the base plate. Each mounting box has a threaded rod a rotatably connected inside, and a slider is threadedly connected to the outer side of the threaded rod a.

[0009] By adopting the above technical solution, the rotation of the threaded rod a can drive the slider to slide inside the mounting box, and then the protective plate can be rotated with the help of the support rod.

[0010] In a preferred embodiment, the adjustment assembly further includes a mounting plate rotatably connected to the top of the support rod, with the end of the support rod away from the mounting plate rotatably connected to a corresponding slider, and the slider being slidably connected to the inner wall of the mounting box.

[0011] By adopting the above technical solution, it can be used in foundation pits at different angles, thereby improving the applicability of the device.

[0012] In a preferred embodiment, each of the fixing clamps is internally threaded with a locking bolt a, the bottom of which extends into the interior of the fixing clamp and abuts against the outer side of the support rod.

[0013] By adopting the above technical solution and by setting the locking bolt a, the fixing clamp with the determined installation position can be fixed to the outer periphery of the support rod.

[0014] In a preferred embodiment, sleeves are fixedly connected to the outer side of each threaded rod b.

[0015] By adopting the above technical solution and by setting up the sleeve, the operator can rotate the threaded rod b.

[0016] In a preferred embodiment, locking bolts b are provided at both ends inside the mounting plate, and the mounting plate and the protective plate are connected by locking bolts b.

[0017] By adopting the above technical solution and by setting the locking bolt b, the mounting plate can be installed on the protective plate.

[0018] In a preferred embodiment, mounting holes are provided at all four corners of the base plate, and one end of the threaded rod a extends to the outside of the mounting box and is fixedly connected to a handwheel.

[0019] By adopting the above technical solution and setting the mounting holes, it is convenient to use anchor rods to fix the base plate.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, after the support rod is fixed to the base plate and the protective plate, the worker can use the sleeve to rotate the threaded rod b, so that the length of the threaded rod b in the thread groove continues to extend out. Then, the length of the fixing part a can be adjusted according to the actual required height, so that the snap-fit ​​part can be snapped into the corresponding slot. The addition of the fixing part b, threaded rod b and fixing part a and other support structures below the support rod can improve the compressive strength of the support rod. Moreover, the above-mentioned support structure can form a triangular structure with the support rod, the protective plate and the base plate. It can decompose the horizontal pressure into a component force along the axial direction of the support rod, so that the fixing part b, threaded rod b and fixing part a and other components can work together to bear the force, thereby improving the stability of the entire support structure and further preventing the collapse of the soil on the side wall of the foundation pit.

[0021] 2. In this utility model, the rotation of the threaded rod a can drive the slider to slide inside the mounting box, and then the protective plate can be rotated with the help of the support rod, so that it can be used in foundation pits of different angles, thereby improving the applicability of the device. Attached Figure Description

[0022] Figure 1 This utility model provides an overall three-dimensional view of a protective structure for deep foundation pit excavation in building construction; Figure 2 This utility model provides an internal schematic diagram of the fixing component b of a protective structure for deep foundation pit excavation in building construction. Figure 3 This utility model provides a schematic diagram of the installation plate and locking bolt b of the protective structure for deep foundation pit excavation of building foundations; Figure 4This utility model provides a partial schematic diagram of a protective structure for deep foundation pit excavation in building construction.

[0023] Legend: 1. Base plate; 2. Mounting hole; 3. Mounting box; 4. Threaded rod a; 5. Slider; 6. Support rod; 7. Slot; 8. Snap-fit; 9. Fixing part a; 10. Threaded rod b; 11. Sleeve; 12. Threaded groove; 13. Fixing part b; 14. Fixing clamp; 15. Locking bolt a; 16. Locking bolt b; 17. Mounting plate; 18. Protective plate. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] Reference Figure 1-4 A protective structure for deep foundation pit excavation of a building includes a base plate 1. A protective plate 18 is rotatably installed on the outer side of the base plate 1. Two support rods 6 are arranged between the base plate 1 and the protective plate 18. Two fixing clamps 14 are fitted around the outer periphery of each support rod 6. Fixing components b13 are rotatably installed inside each fixing clamp 14. The fixing component b13 has a threaded groove 12 inside, and a threaded rod b10 is threadedly connected inside the threaded groove 12. A fixing component a9 is rotatably connected to the end of the threaded rod b10 away from the fixing component b13. A snap-fit ​​component 8 is rotatably connected to the bottom of the fixing component a9. A slot 7 is opened inside the base plate 1 to cooperate with the snap-fit ​​component 8. After the support rods 6 are fixed to the base plate 1 and the protective plate 18, workers can use a sleeve 11 to... Rotating the threaded rod b10 causes its length to extend continuously within the threaded groove 12, allowing the length of the fixing member a9 to be adjusted according to the required height. This enables the snap-fit ​​member 8 to be snapped into the corresponding slot 7. Adding a supporting structure such as the fixing member b13, threaded rod b10, and fixing member a9 below the support rod 6 improves the compressive strength of the support rod 6. Furthermore, the aforementioned supporting structure forms a triangular structure with the support rod 6, the protective plate 18, and the base plate 1, which decomposes the horizontal pressure into a component force along the axial direction of the support rod 6. This allows the fixing member b13, threaded rod b10, and fixing member a9 to work together to bear the force, thereby improving the stability of the entire support structure and further preventing the collapse of the soil on the side wall of the foundation pit.

[0026] Specifically, an adjustment assembly is provided on the top of the base plate 1. The adjustment assembly includes two mounting boxes 3 fixedly connected to the top of the base plate 1. Threaded rods a4 are rotatably connected inside each mounting box 3. Slider 5 is threadedly connected to the outer side of the threaded rods a4. By rotating the threaded rods a4, the sliders 5 can slide within the mounting boxes 3, thereby pushing the protective plate 18 to rotate with the help of the support rod 6. This allows the device to be used in foundation pits at different angles, thus improving its applicability. The adjustment assembly also includes a mounting plate 17 rotatably connected to the top of the support rod 6. The end of the support rod 6 away from the mounting plate 17 is rotatably connected to the corresponding slider 5. The slider 5 is slidably connected to the inner wall of the mounting box 3. Locking bolts a15 are threadedly connected inside each fixing clamp 14. By setting the locking bolts a15, the fixing clamp 14, whose installation position has been determined, can be fixed to the outer periphery of the support rod 6. The bottom of the locking bolts a15 extends into the interior of the fixing clamp 14 and abuts against the outer side of the support rod 6.

[0027] Specifically, sleeves 11 are fixedly connected to the outer side of the threaded rod b10. The sleeves 11 allow the operator to rotate the threaded rod b10. Locking bolts b16 are provided at both ends inside the mounting plate 17. The mounting plate 17 and the protective plate 18 are connected by locking bolts b16. The locking bolts b16 allow the mounting plate 17 to be installed on the protective plate 18. Mounting holes 2 are provided at the four corners inside the base plate 1 to facilitate the use of anchor bolts to fix the base plate 1. One end of the threaded rod a4 extends to the outer side of the mounting box 3 and is fixedly connected to a handwheel.

[0028] Working principle: First, the worker can insert the anchor rod into the corresponding mounting hole 2 and fix the position of the base plate 1. Then, the worker can use the locking bolt b16 to fix the mounting plate 17 to the base plate 1. Then, the worker can turn the handwheel to drive the threaded rod a4 to rotate, thereby driving the slider 5 to slide in the mounting box 3. Then, the worker can use the support rod 6 to push the protective plate 18 to rotate. This can be used for foundation pits with different angles. After the support rod 6 is fixed to the base plate 1 and the protective plate 18, the worker can use the sleeve 11 to rotate the threaded rod b10, so that the length of the threaded rod b10 in the threaded groove 12 can be continuously extended. This allows the worker to adjust the length of the fixing part a9 according to the actual required height, so that the snap-fit ​​part 8 can be snapped into the corresponding slot 7. The worker can also add a supporting structure such as the fixing part b13, the threaded rod b10 and the fixing part a9 below the support rod 6 to improve the compressive strength of the support rod 6 and prevent the collapse of the soil on the side wall of the foundation pit.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application 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 this application should be included within the protection scope of this application.

Claims

1. A protective structure for deep foundation pit excavation construction of a building foundation, comprising a bottom plate (1), characterized in that: A protective plate (18) is rotatably installed on the outer side of the base plate (1). Two support rods (6) are provided between the base plate (1) and the protective plate (18). Two fixing clamps (14) are fitted around the outer periphery of the support rods (6). Fixing parts b (13) are rotatably installed inside the fixing clamps (14). A threaded groove (12) is provided inside the fixing parts b (13). A threaded rod b (10) is threaded inside the threaded groove (12). A fixing part a (9) is rotatably connected to the end of the threaded rod b (10) away from the fixing part b (13). A snap-fit ​​part (8) is rotatably connected to the bottom of the fixing part a (9). A slot (7) is provided inside the base plate (1) to cooperate with the snap-fit ​​part (8).

2. The construction of a building foundation deep excavation construction protection structure according to claim 1, characterized in that: An adjustment assembly is provided on the top of the base plate (1). The adjustment assembly includes two mounting boxes (3) fixedly connected to the top of the base plate (1). A threaded rod a (4) is rotatably connected inside each mounting box (3). A slider (5) is threadedly connected to the outside of the threaded rod a (4).

3. The foundation deep excavation construction protection structure of claim 2, wherein: The adjustment assembly also includes a mounting plate (17) rotatably connected to the top of the support rod (6). The end of the support rod (6) away from the mounting plate (17) is rotatably connected to the corresponding slider (5). The slider (5) is slidably connected to the inner wall of the mounting box (3).

4. The foundation deep pit excavation construction protection structure of claim 1, wherein: The fixed clamp (14) is threaded with locking bolts a (15) inside. The bottom of the locking bolts a (15) extends into the fixed clamp (14) and abuts against the outside of the support rod (6).

5. The foundation deep excavation construction protection structure for a building construction according to claim 1, characterized in that: Each threaded rod b (10) is fixedly connected to a sleeve (11) on its outer side.

6. The foundation deep excavation construction protection structure for a building construction according to claim 3, characterized in that: Both ends of the mounting plate (17) are provided with locking bolts b (16), and the mounting plate (17) and the protective plate (18) are connected by locking bolts b (16).

7. The foundation deep excavation construction protection structure for a building construction according to claim 2, characterized in that: The base plate (1) has mounting holes (2) at all four corners, and one end of the threaded rod a (4) extends to the outside of the mounting box (3) and is fixedly connected to a handwheel.

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