A prefabricated foundation pit supporting module and a connecting component thereof

Abstract

This invention relates to the field of foundation pit support technology, specifically to a prefabricated foundation pit support module and its connecting components, comprising: a first support plate, a support rod provided on the surface of the first support plate, a circular groove and a swing groove formed at the bottom of the first support plate, a rotating shaft inserted into the circular groove, second teeth provided on both sides of the rotating shaft, a lifting groove formed on the surface of the first support plate, a lifting plate inserted into the lifting groove, a lower pressure plate fixed to the end of the lifting plate, and first teeth provided at the bottom of the lower pressure plate; the beneficial effects are: stabilizing the angle of the rotating shaft in the circular groove, thus stabilizing the connecting rod at the bottom of the first support plate; stabilizing the first support plate by inserting the connecting rod into the soil; allowing the rotating shaft to rotate in the circular groove after the lower pressure plate rises; and supporting the surface of the first support plate by the support rod, thus supporting the first support plate against the inner wall of the pit, and allowing the first support plate to swing along the rotating shaft without changing the position of the connecting rod.

Description

Technical Field

[0001] This invention relates to the field of foundation pit support technology, specifically to a prefabricated foundation pit support module and its connecting components. Background Technology

[0002] Foundation pit support is a set of measures taken to support, reinforce, and protect the sidewalls and surrounding soil of a foundation pit in order to ensure the safety of foundation pit excavation and construction and to protect the surrounding environment (buildings, roads, underground pipelines, etc.). It is one of the core technologies of geotechnical engineering and underground engineering and is widely used in the foundation pit construction stage of projects such as high-rise buildings, subway stations, underground garages, and municipal pipeline networks.

[0003] In the prior art, patent number CN113605398A, entitled "A Foundation Pit Support Mechanism," includes multiple cast-in-place piles forming a virtual curved path along the edge of the foundation pit. This curved path comprises multiple unit convex curves protruding towards the center of the foundation pit, connected end-to-end. The cast-in-place piles are arranged at intervals along the curved path. A front capping beam connects the piles closest to the center of the foundation pit to the front capping beam, located on the same unit convex curve. A rear capping beam connects the pile furthest from the center of the foundation pit to the rear capping beam, located on the same unit convex curve. A middle capping beam connects adjacent front and rear piles along the curved path, as well as all cast-in-place piles located between the front and rear piles. This design effectively controls costs while improving lateral bending resistance.

[0004] However, when installing existing prefabricated foundation pit support, the support plate is first inserted into the soil, and then the support plate is supported on the surface of the pit by the supporting rod. Since the support plate will tilt after being supported, the bottom insertion rod swings, affecting the stability at the bottom. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated foundation pit support module and its connecting components to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated foundation pit support module, comprising: The first support plate has a support rod on its surface. The bottom of the first support plate has a circular groove and a swing groove. A rotating shaft is inserted into the circular groove. The two sides of the rotating shaft have second teeth. The surface of the first support plate has a lifting groove. A lifting plate is inserted into the lifting groove. A lower pressure plate is fixed to the end of the lifting plate. The bottom of the lower pressure plate has first teeth. An extension rod is fixed to the surface of the lower pressure plate.

[0007] Preferably, a second support plate is placed on one side of the first support plate, and the support rod on the surface of the first support plate is divided into two components. One component is screwed into the inside of the other component, and the other component can rotate. After rotation, the total length of the two components increases.

[0008] Preferably, the surface of the first support plate is provided with a through groove, and a lifting rod is provided in the through groove. One side of the lifting rod is provided with a thread, and the threaded side of the lifting rod is screwed into the inside of the through groove. The other side of the lifting rod is inserted into the inside of the lifting plate. A limit ring is provided on the side surface of the lifting rod inserted into the inside of the lifting plate. The limit ring is located inside the lifting plate, and the lifting plate moves up and down with the lifting rod.

[0009] Preferably, a rotating rod is fixed to the surface of the lifting rod, and the lifting rod rotates with the rotating rod. The surface of the first support plate is provided with a plug hole, and the lifting plate can move up and down in the lifting groove.

[0010] Preferably, the lower pressure plate moves up and down with the lifting plate. When the lower pressure plate descends, the first tooth on the surface of the lower pressure plate can be between the second tooth on the surface of the rotating shaft.

[0011] Preferably, the surface of the extension rod is provided with force grooves, and multiple sets of force grooves are provided. The force grooves move up and down with the extension rod.

[0012] Preferably, an arc-shaped plate is fixed to the bottom of the first support plate, and the arc-shaped plate is located on both sides of the bottom of the first support plate. The first support plate can swing around the pivot, and the arc-shaped plate swings with the first support plate.

[0013] Preferably, the bottom of the rotating shaft is fixed with a plug rod, and multiple sets of plug rods are provided. The plug rods swing with the rotating shaft and can be inserted into the soil at the bottom of the foundation pit.

[0014] A connecting component for a prefabricated foundation pit support module includes an anchor rod, an anchor rod with a threaded hole at its end, a threaded rod threaded into the threaded hole, an annular groove on one side surface of the threaded rod, a connecting plate being engaged in the annular groove, and the connecting plate being able to rotate on the surface of the threaded rod and move with the threaded rod.

[0015] Preferably, a positioning rod is fixed to the surface of the connecting plate. The positioning rod is located on both sides of the connecting plate and can be inserted into the insertion holes on the surfaces of the first and second support plates. A force-applying plate is fixed to the surface of the connecting plate. Two sets of force-applying plates are provided, located on both sides of the connecting plate respectively. The position of the force-applying plate corresponds to the position of the force groove on the surface of the extension rod. The force-applying plate can be inserted into the force groove as the connecting plate moves. The bottom end of the force-applying plate is arc-shaped. The force-applying plate is inserted into the force groove and holds against one side of the force groove, so that the force groove is subjected to downward pressure, and the extension rod and the lower pressure plate are pressed down accordingly.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The present invention proposes a rotating rod that causes the lifting rod to rotate and press down the lifting plate, causing the lifting plate to move downward in the lifting groove. As the lifting plate descends, the first tooth of the pressing plate abuts between the second teeth on the surface of the rotating shaft, stabilizing the angle of the rotating shaft in the circular groove. This stabilizes the insertion rod at the bottom of the first support plate. By inserting the insertion rod into the soil, the first support plate is stabilized. After the pressing plate rises, the rotating shaft can rotate in the circular groove. The support rod abuts against the surface of the first support plate, causing the first support plate to abut against the inner wall of the pit. The first support plate can swing along the rotating shaft, and the position of the insertion rod does not change. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the first support plate structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the first support plate of the present invention from another perspective.

[0020] Figure 4 This is a schematic diagram of the plug-in rod structure of the present invention.

[0021] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point B.

[0023] Figure 7 This is a schematic diagram of the connecting plate structure of the present invention.

[0024] In the diagram: 1. First support plate; 2. Second support plate; 3. Support rod; 4. Anchor rod; 5. Screw hole; 6. Insert rod; 7. Arc plate; 8. Through groove; 9. Rotating rod; 10. Lifting rod; 11. Lifting groove; 12. Lifting plate; 13. Insert hole; 14. Extension rod; 15. Force groove; 16. Lower pressure plate; 17. First tooth; 18. Rotating shaft; 19. Second tooth; 20. Swing groove; 21. Circular groove; 23. Positioning rod; 24. Force application plate; 25. Connecting plate; 26. Screw. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 7 The present invention provides a technical solution: A prefabricated foundation pit support module includes: a first support plate 1, with support rods 3 provided on the surface of the first support plate 1; a circular groove 21 and a swing groove 20 formed at the bottom of the first support plate 1; a rotating shaft 18 inserted into the circular groove 21; second teeth 19 provided on both sides of the rotating shaft 18; a lifting groove 11 formed on the surface of the first support plate 1; a lifting plate 12 inserted into the lifting groove 11; a lower pressure plate 16 fixed to the end of the lifting plate 12; first teeth 17 provided at the bottom of the lower pressure plate 16; an extension rod 14 fixed to the surface of the lower pressure plate 16; and a second support plate placed on one side of the first support plate 1. 2. The support rod 3 on the surface of the first support plate 1 is divided into two components. One component is screwed into the inside of the other component. The other component can rotate. After rotation, the total length of the two components increases, and the rotating shaft 18 can rotate in the circular groove 21. The support rod 3 supports the surface of the first support plate 1, so that the first support plate 1 supports the inner wall of the pit. The first support plate 1 can swing along the rotating shaft 18, and the position of the plug rod 6 will not change. After the first support plate 1 is supported, it moves down again through the lower pressure plate 16, so that the first tooth 17 is locked between the second tooth 19 on the surface of the rotating shaft 18.

[0027] The surface of the first support plate 1 has a through groove 8, in which a lifting rod 10 is installed. One side of the lifting rod 10 is threaded and screwed into the through groove 8. The other side of the lifting rod 10 is inserted into the lifting plate 12. A limit ring is provided on the side surface of the lifting rod 10 inserted into the lifting plate 12. The limit ring is located inside the lifting plate 12. The lifting plate 12 rises and falls with the lifting rod 10. The lifting rod 10 rotates and presses down on the lifting plate 12, causing the lifting plate 12 to move down in the lifting groove 11. After the pressing plate 16 descends with the lifting plate 12, the first tooth 17 is held between the second tooth 19 on the surface of the rotating shaft 18, stabilizing the angle of the rotating shaft 18 in the circular groove 21.

[0028] A rotating rod 9 is fixed to the surface of the lifting rod 10, and the lifting rod 10 rotates with the rotating rod 9. A insertion hole 13 is provided on the surface of the first support plate 1, allowing the lifting plate 12 to move up and down in the lifting groove 11. The lower pressure plate 16 moves up and down with the lifting plate 12. The lower pressure plate 16 descends, and the first tooth 17 on the surface of the lower pressure plate 16 can reach between the second tooth 19 on the surface of the rotating shaft 18. A force-bearing groove 15 is provided on the surface of the extension rod 14, with multiple sets of force-bearing grooves. The force-bearing groove 15 moves up and down with the extension rod 14. An arc-shaped plate 7 is fixed to the bottom of the first support plate 1, located on both sides of the bottom of the first support plate 1. The rotating shaft 18 can swing around the rotating shaft 18. The arc plate 7 swings with the first support plate 1. The bottom of the rotating shaft 18 is fixed with a plug rod 6. There are multiple sets of plug rods 6. The plug rod 6 swings with the rotating shaft 18. The plug rod 6 can be inserted into the bottom soil of the foundation pit. After the lower pressure plate 16 descends with the lifting plate 12, the first tooth 17 is held between the second tooth 19 on the surface of the rotating shaft 18, stabilizing the angle of the rotating shaft 18 in the circular groove 21. This stabilizes the plug rod 6 at the bottom of the first support plate 1. By inserting the plug rod 6 into the soil, the first support plate 1 is stabilized. After the lower pressure plate 16 rises, the rotating shaft 18 can rotate in the circular groove 21.

[0029] A connecting component for a prefabricated foundation pit support module as described in claim 8, characterized in that: it includes an anchor rod 4, the end of which is provided with a threaded hole 5, a screw rod 26 is threaded into the threaded hole 5, a ring groove is provided on one side surface of the screw rod 26, a connecting plate 25 is engaged in the ring groove, the connecting plate 25 can rotate on the surface of the screw rod 26 and move with the screw rod 26, a positioning rod 23 is fixed on the surface of the connecting plate 25, the positioning rod 23 is located on both sides of the connecting plate 25, the positioning rod 23 can be inserted into the insertion holes 13 on the surface of the first support plate 1 and the second support plate 2, and a force-applying plate 24 is fixed on the surface of the connecting plate 25, two sets of force-applying plates 24 are provided, respectively located on both sides of the connecting plate 25. On the side, the position of the force-applying plate 24 corresponds to the position of the force-receiving groove 15 on the surface of the extension rod 14. As the connecting plate 25 moves, the force-applying plate 24 can be inserted into the force-receiving groove 15. The bottom end of the force-applying plate 24 is arc-shaped. The force-applying plate 24 is inserted into the force-receiving groove 15 and holds against one side of the force-receiving groove 15, so that the force-receiving groove 15 is subjected to downward pressure, which causes the extension rod 14 and the lower pressure plate 16 to be pressed down. As the connecting plate 25 moves, the force-applying plate 24 is inserted into the force-receiving groove 15 on the surface of the extension rod 14. Since one side of the force-applying plate 24 is arc-shaped, the force-applying plate 24 holds against the bottom of the force-receiving groove 15, which causes the force-receiving groove 15 to be pressed down, which further stabilizes the position of the lower pressure plate 16.

[0030] Turning the rotating rod 9 causes the lifting rod 10 to rotate and press down the lifting plate 12, causing the lifting plate 12 to move downward in the lifting groove 11. As the lifting plate 12 descends, the pressing plate 16 causes the first tooth 17 to abut against the second tooth 19 on the surface of the rotating shaft 18, stabilizing the angle of the rotating shaft 18 in the circular groove 21. This stabilizes the insertion rod 6 at the bottom of the first support plate 1. By inserting the insertion rod 6 into the soil, the first support plate 1 is stabilized. After the pressing plate 16 rises, the rotating shaft 18 can rotate in the circular groove 21. The support rod 3 abuts against the surface of the first support plate 1, causing the first support plate 1 to abut against the inner wall of the pit. The first support plate 1 can swing along the rotating shaft 18, and the position of the insertion rod 6 will not change. After the first support plate 1 is fully abutted, the pressing plate 16 moves down again, causing the first tooth 17 to lock into the rotating shaft. Between the second teeth 19 on the surface of shaft 18, the rotating shaft 18 is stabilized in the circular groove 21. The positioning rod 23 on the surface of the connecting plate 25 is inserted into the insertion hole 13 on the surface of the first support plate 1 and the second support plate 2. The screw 26 is screwed into the screw hole 5 at the end of the anchor rod 4. The anchor rod 4 is embedded in the pit body. The screw 26 is screwed into the screw hole 5, so that the connecting plate 25 is held against the surface of the first support plate 1 and the second support plate 2, and the first support plate 1 and the second support plate 2 are stably held against the inner wall of the pit body. The force plate 24 moves with the connecting plate 25. The force plate 24 is inserted into the force groove 15 on the surface of the extension rod 14. Since one side of the force plate 24 is arc-shaped, the force plate 24 is held against the bottom of the force groove 15, so that the force groove 15 is pressed down, and the position of the pressure plate 16 is further stabilized, always held against the surface of the rotating shaft 18.

[0031] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A prefabricated foundation pit support module, characterized in that: include: The first support plate (1) has a support rod (3) on its surface. The bottom of the first support plate (1) has a circular groove (21) and a swing groove (20). A rotating shaft (18) is inserted into the circular groove (21). The two sides of the rotating shaft (18) have second teeth (19). The surface of the first support plate (1) has a lifting groove (11). A lifting plate (12) is inserted into the lifting groove (11). A lower pressure plate (16) is fixed at the end of the lifting plate (12). The bottom of the lower pressure plate (16) has a first tooth (17). An extension rod (14) is fixed on the surface of the lower pressure plate (16).

2. The prefabricated foundation pit support module according to claim 1, characterized in that: A second support plate (2) is placed on one side of the first support plate (1). The support rod (3) on the surface of the first support plate (1) is divided into two components. One component is screwed into the inside of the other component. One component can rotate. After rotation, the total length of the two components increases.

3. The prefabricated foundation pit support module according to claim 2, characterized in that: The first support plate (1) has a through groove (8) on its surface. A lifting rod (10) is provided in the through groove (8). One side of the lifting rod (10) is threaded. The threaded side of the lifting rod (10) is screwed into the inside of the through groove (8). The other side of the lifting rod (10) is inserted into the inside of the lifting plate (12). A limit ring is provided on the side surface of the lifting rod (10) inserted into the inside of the lifting plate (12). The limit ring is located inside the lifting plate (12). The lifting plate (12) moves up and down with the lifting rod (10).

4. A prefabricated foundation pit support module according to claim 3, characterized in that: The lifting rod (10) has a rotating rod (9) fixed on its surface. The lifting rod (10) rotates with the rotating rod (9), so that the top of the lifting rod (10) is screwed in and out of the top of the through groove (8). The surface of the first support plate (1) is provided with a plug hole (13), and the lifting plate (12) can move up and down in the lifting groove (11).

5. A prefabricated foundation pit support module according to claim 4, characterized in that: The lower pressure plate (16) moves up and down with the lifting plate (12). When the lower pressure plate (16) descends, the first tooth (17) on the surface of the lower pressure plate (16) can be between the second tooth (19) on the surface of the rotating shaft (18). An arc groove is provided at the bottom of the lower pressure plate (16). The size of the arc groove is the same as the size of the rotating shaft (18). After the lower pressure plate (16) descends, the arc groove can be locked on the surface of the rotating shaft (18), and the first tooth (17) is fixed on the surface of the arc groove.

6. A prefabricated foundation pit support module according to claim 5, characterized in that: The surface of the extension rod (14) is provided with a force groove (15). There are multiple sets of force grooves (15). The force grooves (15) move up and down with the extension rod (14). The extension rods (14) are fixed on both sides of the lifting plate (12). The extension rods (14) on both sides move up and down with the lifting plate (12).

7. A prefabricated foundation pit support module according to claim 6, characterized in that: An arc plate (7) is fixed at the bottom of the first support plate (1). The arc plate (7) is located on both sides of the bottom of the first support plate (1). The first support plate (1) can swing around the pivot (18), and the arc plate (7) swings with the first support plate (1).

8. A prefabricated foundation pit support module according to claim 7, characterized in that: The bottom of the rotating shaft (18) is fixed with a plug rod (6). There are multiple sets of plug rods (6). The plug rod (6) swings with the rotating shaft (18). The plug rod (6) can be inserted into the bottom soil of the foundation pit. The rotating shaft (18) can rotate in the circular groove (21). The plug rod (6) rotates with the rotating shaft (18). The first support plate (1) and the plug rod (6) can swing back and forth.

9. A connecting component used in the prefabricated foundation pit support module as described in claim 8, characterized in that: The system includes an anchor rod (4), with a screw hole (5) at the end of the anchor rod (4). A screw rod (26) is screwed into the screw hole (5). An annular groove is provided on one side surface of the screw rod (26), and a connecting plate (25) is engaged in the annular groove. The connecting plate (25) can rotate on the surface of the screw rod (26) and move with the screw rod (26). The two sides of the connecting plate (25) are located on the surfaces of the first support plate (1) and the second support plate (2).

10. The connecting component used in the prefabricated foundation pit support module according to claim 8, characterized in that: The surface of the connecting plate (25) is fixed with a positioning rod (23). The positioning rod (23) is located on both sides of the connecting plate (25). The positioning rod (23) can be inserted into the insertion hole (13) on the surface of the first support plate (1) and the second support plate (2). The surface of the connecting plate (25) is fixed with a force plate (24). There are two sets of force plates (24), which are located on both sides of the connecting plate (25). The position of the force plate (24) corresponds to the position of the force groove (15) on the surface of the extension rod (14). The force plate (24) can be inserted into the force groove (15) as the connecting plate (25) moves. The bottom of the end of the force plate (24) is arc-shaped. The force plate (24) is inserted into the force groove (15) and held against one side of the force groove (15), so that the force groove (15) is subjected to downward pressure, so that the extension rod (14) and the pressure plate (16) are pressed down.

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