A multi-directionally supported foundation pit retaining pile

Abstract

The present invention relates to the technical field of civil engineering construction, and specifically relates to a foundation pit support pile with multi-directional support, including a pile body. A chute is opened at the lower end of the pile body, and a tapered rod is slidably connected to the inner wall of the chute. A cavity is opened on the side surface of the tapered rod, and a rack is fixedly connected to the inner wall of the cavity. A gear is meshed with one side of the rack. Both sides of the gear are rotatably connected with shaft rods, and one of the shaft rods is rotatably connected to the inner wall of the chute. Active connection structures are installed on both sides of the gear. By pumping water from the soil around the tapered rod, the present invention prevents the soil from subsiding due to excessive moisture in the soil. At the same time, the pumped water is stored, and the change in water level is observed through a scale to determine whether the soil has moved downward. Then, when the tapered rod needs to be pulled out, by continuously moving the tapered rod up and down and draining water, the pulling out of the tapered rod becomes more gentle, reducing the damage to the foundation pit soil after construction.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering construction, and particularly to a foundation pit support pile with multi-directional support. Background Technique

[0002] With the acceleration of the urbanization process, the scale of projects such as high-rise buildings, underground transportation, and commercial complexes is continuously expanding, the excavation depth and scale of foundation pits are continuously increasing, traditional support structures are difficult to meet the requirements of complex geological conditions and environmental protection, and deep foundation pit projects face challenges such as complex surrounding environments, land subsidence and collapse, and great difficulty in groundwater control. It is necessary to develop more efficient support technologies.

[0003] A support pile for a building foundation pit with the publication number of CN 115142432 A includes: a support pile, on the surface of which a first storage groove and a fixing groove are provided; a reinforcement plate, on the surface of which a holding plate is installed, on the surface of the holding plate an extension column is installed, on the surface of the extension column a plugging groove is provided, in the plugging groove a telescopic rod is plugged, at the end of the reinforcement plate a threaded rod is screwed, and on the surface of the threaded rod a screwing column is screwed; and a first card slot, provided on the surface of the support pile; the beneficial effect is that: the reinforcement plate proposed by the present invention is hinged in the fixing groove through a rotating shaft, the reinforcement plate can be rotated and stored in the first storage groove, when the screw rod is screwed into the first screw rod, the reinforcement plate can be fixed, and the telescopic rod is retracted into the plugging groove, the semi-circular ring is stuck in the second card slot, and then the telescopic rod is stuck in the first card slot to fix the telescopic rod in the plugging groove, and the reinforcement plate and the support pile form a ninety-degree angle.

[0004] However, in the above patent, when the support pile is inserted into the bottom of the inner cavity of the foundation pit, if there is too much groundwater, the position where the support pile enters the soil will be compacted due to the insertion of the support pile, resulting in a large amount of accumulated water. This will cause the soil around the support pile to be moist and loose, affecting the support capacity of the foundation pit. At the same time, when the construction is completed and the foundation pile needs to be pulled out, if the foundation pile is pulled out forcefully, it is easy to carry a large amount of soil, causing geological damage to the foundation pit and affecting the construction effect. At the same time, when the local land of the foundation pit subsides, it is impossible to accurately observe the subsidence height and further reinforce the subsided land. Summary of the Invention

[0005] The purpose of the invention is a foundation pit support pile with multi-directional support to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: A multi-directionally supported foundation pit retaining pile, including a pile body, a chute is opened at the lower end of the pile body, a tapered rod is slidably connected to the inner wall of the chute, a cavity is opened on the side surface of the tapered rod, a rack is fixedly connected to the inner wall of the cavity, a gear is meshed on one side of the rack, shaft rods are rotatably connected to both sides of the gear, active connection structures are installed on both sides of the gear, a rotating rod is rotatably connected to both sides of the pile body, an elastic transmission structure is installed on the outer wall of the rotating rod, and the elastic transmission structure is connected to the shaft rod close to the inner wall of the chute, capable of making the gear rotate quickly in the reverse direction and driving the tapered rod to move in the reverse direction when the active connection structure fails to drive the gear to rotate;

[0007] Two water extraction pipes are symmetrically opened inside the tapered rod, an elastic valve structure is installed at the upper notch of the water extraction pipe, a water seepage structure communicated with the water extraction pipe is installed at the bottom of the tapered rod, and a scale is embedded on the outer wall of the pile body;

[0008] Connection structures for connecting adjacent rotating rods are installed at both ends of the rotating rod.

[0009] Preferably, the active connection structure includes two coupling shafts I, the coupling shafts I are symmetrically arranged on both sides of the gear and are slidably connected to the shaft rods at corresponding positions, a spring I is fixedly connected between each coupling shaft I and the gear, a coupling shaft II is meshed on the side of each spring I away from the gear, and the coupling shaft II is fixedly connected to the shaft rod at the corresponding position.

[0010] Preferably, the elastic transmission structure includes a positioning ring, the positioning ring is fixedly connected to the outer wall of the rotating rod, a belt is also rotatably connected to the outer wall of the rotating rod, a spring II is fixedly connected between the positioning ring and the belt, a small pulley is sleeved on the outer wall of the shaft rod close to the inner wall of the chute, and a belt is jointly sleeved between the small pulley and the large pulley.

[0011] Preferably, one end of the shaft rod away from the small pulley is fixedly connected with a motor, and the motor is fixedly connected to the inner side wall of the chute.

[0012] Preferably, the water seepage structure includes a water seepage tank, the water seepage tank is opened inside the lower end of the tapered rod and is communicated with the water extraction pipe, and a plurality of water seepage openings communicated with the water seepage tank are opened at the lower end of the tapered rod.

[0013] Preferably, the elastic valve structure includes a sliding groove, the sliding groove is opened on the inner side wall of the water extraction pipe, empty grooves are opened at both the upper and lower notch openings of the sliding groove, and the upper empty groove is communicated with the chute, a drainage cover is fixedly connected to the upper notch opening of the upper empty groove, a spring III is fixedly connected to the lower end of the drainage cover, and a piston slidably connected to the sliding groove is fixedly connected to the lower end of the spring III.

[0014] Preferably, the connecting structure includes two connecting blocks symmetrically arranged at both ends of the rotating rod. A limiting groove is provided on the side of each connecting block away from the rotating rod. A threaded rod is slidably connected to the inner wall of the limiting groove, and a fourth spring is fixedly connected between one end of the threaded rod and the inner wall of the limiting groove.

[0015] Preferably, a protective sleeve is fixedly connected to the end of the connecting block away from the rotating rod. A positioning block is arranged on the side of the threaded rod away from the connecting block. Two internal threaded cylinders are symmetrically arranged on both sides of the positioning block, and each internal threaded cylinder can be screwed with the threaded rod at the corresponding position. A protective sleeve capable of being movably connected to the internal threaded cylinder is fixedly connected to one end of each connecting block. Connecting holes are penetratingly provided on the side surfaces of the positioning block and the connecting block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The accumulated water is infiltrated into the inside of the infiltration tank through the water seepage port, and then the infiltrated water is pumped into the cavity of the chute for storage through the water suction pipe. At the same time, when the land moves downward and drives the conical rod to move, the change in the water level inside the chute is used to judge whether the water level moves downward. When local downward movement occurs at the bottom of the foundation pit, the land moves downward to drive the conical rod to slide downward and drive the rotating rod to rotate. The rotation of the rotating rod causes the connecting block to rotate, thereby adjusting the orientation of the connecting hole, facilitating the staff to re-install the anchor rod for positioning at the connecting hole. At the same time, when the connecting hole rotates, the connecting structure can make the connection between the pile body in the area where the land moves downward and the pile bodies installed on both sides closer, improving the support firmness. At the same time, when it is necessary to pull out the conical rod, when the soil adsorption force on the surface of the conical rod is too strong, every time the conical rod rises, a part of the water inside the chute will be discharged through the water seepage port to the periphery of the conical rod, reducing the adsorption force of the soil around the conical rod. Then the active connection structure is disconnected to make the conical rod descend. By repeating the process of continuously lifting and adding water up and down, the soil around the conical rod can be made more moist and loose, facilitating the pulling out of the conical rod and preventing damage to the foundation pit caused by forced pulling out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further explains the present invention in conjunction with the drawings and embodiments:

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the conical rod inserted into the foundation pit of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the large pulley of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the first coupling of the present invention;

[0023] Figure 5 Cross-sectional structural schematic diagram of the water extraction pipe of the present invention;

[0024] Figure 6 Cross-sectional structural schematic diagram of the threaded rod of the present invention;

[0025] Figure 7 Partial structural schematic diagram of the tapered rod of the present invention;

[0026] Figure 8 For the present invention's Figure 5 Local enlarged view at position A;

[0027] Figure 9 For the present invention's Figure 5 Local enlarged view at position B;

[0028] Figure 10 For the present invention's Figure 6 Local enlarged view at position C.

[0029] Explanation of reference numerals:

[0030] 1, pile body; 2, tapered rod; 3, sliding groove; 4, cavity; 5, rotating rod; 6, rack; 7, shaft rod; 8, gear; 9, first spring; 10, first coupling; 11, second coupling; 12, small pulley; 13, belt; 14, large pulley; 15, second spring; 16, positioning ring; 17, motor; 18, water seepage tank; 19, water seepage port; 20, water extraction pipe; 21, sliding slot; 22, empty slot; 23, drainage cover; 24, third spring; 25, piston; 26, connecting block; 27, connecting hole; 28, limiting slot; 29, fourth spring; 30, threaded rod; 31, protective sleeve; 32, internal threaded cylinder; 33, positioning block; 34, scale; 35, water pipe; 36, foundation pit. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-10, the present invention provides a technical solution: a multi-directionally supported foundation pit retaining pile, including a pile body 1, characterized in that: a chute 3 is opened at the lower end of the pile body 1, a tapered rod 2 is slidably connected to the inner wall of the chute 3, a cavity 4 is opened on the side surface of the tapered rod 2, a rack 6 is fixedly connected to the inner wall of the cavity 4, a gear 8 is engaged with one side of the rack 6, both sides of the gear 8 are rotatably connected to a shaft rod 7, and one of the shaft rods 7 is rotatably connected to the inner wall of the chute 3. Active connection structures are installed on both sides of the gear 8, and the active connection structures can drive the gear 8 to rotate when not subjected to large resistance. A rotating rod 5 is rotatably connected to both sides of the pile body 1, an elastic transmission structure is installed on the outer side wall of the rotating rod 5, and the elastic transmission structure is connected to the shaft rod 7 close to the inner wall of the chute 3, and can make the gear 8 quickly rotate in the reverse direction and drive the tapered rod 2 to move in the reverse direction when the active connection structure cannot drive the gear 8 to rotate;

[0033] Two water extraction pipes 20 are symmetrically opened inside the tapered rod 2. Elastic valve structures are installed at the upper slots of the water extraction pipes 20. A water seepage structure communicated with the water extraction pipes 20 is installed at the bottom of the tapered rod 2. A scale 34 is embedded in the outer side wall of the pile body 1, and a water pipe 35 communicated with the chute 3 is installed at the upper end of the pile body 1;

[0034] Connection structures for connecting adjacent rotating rods 5 are installed at both ends of the rotating rod 5, which can connect the closer ends of the rotating rods 5 on every two pile bodies 1 to each other, and the connection structures can rotate and tighten according to the downward movement of the tapered rod 2.

[0035] Specifically, refer to Figure 2 And Figure 3 , the rotation of the gear 8 drives the rack 6 to slide up and down. During the sliding process of the rack 6, the tapered rod 2 will be driven to slide up and down in the cavity of the chute 3, so that the tapered rod 2 obliquely inserts into the bottom of the foundation pit 36, and the side of the pile body 1 abuts against the side wall of the foundation pit 36, thus playing a role in obliquely resisting the foundation pit 36.

[0036] Among them, the active connection structure includes two coupling one 10. The coupling one 10 is symmetrically arranged on both sides of the gear 8 and is slidably connected to the shaft rod 7 at the corresponding position. A spring one 9 is fixedly connected between each coupling one 10 and the gear 8. A coupling two 11 is engaged with the side of each spring one 9 away from the gear 8, and the coupling two 11 is fixedly connected to the shaft rod 7 at the corresponding position.

[0037] Among them, the elastic transmission structure includes a positioning ring 16. The positioning ring 16 is fixedly connected to the outer side wall of the rotating rod 5. A belt 13 is also rotatably connected to the outer side wall of the rotating rod 5. A spring two 15 is fixedly connected between the positioning ring 16 and the belt 13. A small pulley 12 is sleeved on the outer side wall of the shaft rod 7 close to the inner wall of the chute 3. A belt 13 is jointly sleeved between the small pulley 12 and the large pulley 14.

[0038] One end of the shaft 7 away from the small pulley 12 is fixedly connected to a motor 17 , and the motor 17 is fixedly connected to the inner wall of the chute 3 .

[0039] Specifically, refer to Figure 3 、 Figure 4 and Figure 6 , where the meshing parts of coupling 2 11 and coupling 1 10 are both beveled on one side and straight on the other side, and at the same time, the beveled sides of every two meshing couplings 10 and coupling 2 11 can conflict with each other, and the straight sides can also conflict with each other. If coupling 2 11 on the left side of gear 8 rotates clockwise, the straight side of coupling 2 11 on the left side will conflict with the straight side of coupling 1 10, and by driving coupling 1 10 to rotate clockwise, coupling 10 rotates and then drives spring 1 9 and gear 8 to The gear 8 rotates clockwise, and the left coupling 10 and the coupling 2 11 will not be separated during the clockwise rotation. However, during the clockwise rotation, the right coupling 10 and the coupling 2 11 are in oblique contact. If the right coupling 2 11 is also driven to rotate due to the inability of the rotating rod 5 to rotate, the right coupling 10 and the coupling 2 11 will be separated. When the gear 8 rotates and drives the rack 6 to move, the cone rod 2 will slide downward and be inserted into the bottom of the pit 36. Figure 2 , the cone rod 2 is in a state of having been inserted into the bottom of the foundation pit 36;

[0040] When the cone rod 2 needs to be pulled out of the bottom of the foundation pit 36, the motor 17 drives the left coupling 10 and the coupling 2 11 to rotate counterclockwise. At this time, the contact surface between the left coupling 2 11 and the coupling 1 10 is a bevel, and the contact surface between the right coupling 10 and the coupling 2 11 is a straight edge. During the rotation of the two shafts 7, the small pulley 12 will rotate together and drive the large pulley 14 to rotate through the belt 13. If the rotating rod 5 cannot rotate normally while the large pulley 14 rotates, This will drive spring 2 15 to curl and store elastic potential energy. At this time, if gear 8 rotates to drive the meshing rack 6 and cone rod 2 to rise, the adsorption force of the ground is too large, causing the pile body 1 to be unable to continue to rise, and the coupling 1 10 and coupling 2 11 on the left will be disengaged. At the same time, spring 2 15 releases the stored elastic potential energy to drive the shaft 7 on the right to rotate clockwise. The shaft 7 drives gear 8 to rotate clockwise through coupling 2 11 and coupling 1 10, thereby causing the rack 6 and cone rod 2 to drop rapidly.

[0041] Among them, the seepage structure includes a seepage trough 18, which is opened inside the lower end of the cone rod 2 and is connected to the water pumping pipe 20. The lower end of the cone rod 2 is provided with several seepage ports 19 connected to the seepage trough 18. A filter screen is installed at the groove of the seepage port 19 to prevent soil from entering the cavity of the seepage trough 18.

[0042] Specifically, when the tapered rod 2 is inserted into the bottom of the foundation pit 36, if there is a lot of moisture at the bottom of the foundation pit 36, since the soil around the part inserted by the tapered rod 2 is relatively compact, it is easy to cause water accumulation around the tapered rod 2, and the accumulated water is difficult to drain. At this time, the excess water will seep into the inside of the water seepage tank 18 through the water seepage port 19, and then the water inside the water seepage tank 18 will be pumped into the cavity of the sliding groove 3 through the water suction pipe 20.

[0043] Among them, the elastic valve structure includes a sliding groove 21, which is opened on the inner side wall of the water suction pipe 20. Empty grooves 22 are opened at both the upper and lower ends of the sliding groove 21, and the upper empty groove 22 communicates with the sliding groove 3. A drainage cover 23 is fixedly connected to the upper notch of the upper empty groove 22. A third spring 24 is fixedly connected to the lower end of the drainage cover 23, and a piston 25 slidably connected to the sliding groove 21 is fixedly connected to the lower end of the third spring 24.

[0044] Specifically, when the upper end of the water pipe 35 is connected to a water pump and pumps into the inside of the sliding groove 3, the air pressure inside the sliding groove 3 decreases, thereby pulling the piston 25 to slide upward. When the piston 25 slides from the inner wall of the sliding groove 21 into the upper empty groove 22, the seepage water inside the water seepage tank 18 will be pumped into the inside of the sliding groove 3 by the empty groove 22 and stored until the water level inside the sliding groove 3 reaches the position of the lower notch of the water pipe 35, and then it will be pumped away by the water pipe 35. At the same time, when there is water flow stored inside the sliding groove 3, the scale 34 can observe the height of the water level. When the tapered rod 2 descends, the height of the water level will change, so that the staff can quickly observe whether the bottom of the foundation pit 36 has sunk. At the same time, refer to Figure 6 , when the gear 8 rotates counterclockwise and drives the tapered rod 2 to lift upward, it is difficult to pull out the tapered rod 2 due to the adsorption of the soil. At this time, as the tapered rod 2 is lifted, the adsorption force becomes higher, and it will adsorb the piston 25 downward through the water seepage port 19, the water seepage tank 18 and the water suction pipe 20, so that the piston 25 slides downward. When the piston 25 enters the lower empty groove 22, the water inside the sliding groove 3 will be pumped out and discharged to the lower end of the tapered rod 2 through the empty groove 22, the water seepage tank 18 and the water seepage port 19. At this time, when the active connection structure is disconnected and the gear 8 is pushed by the elastic transmission structure to rotate clockwise for reset, the tapered rod 2 will descend again, so that the water accumulation on the outer side wall of the tapered rod 2 increases, and the soil around the tapered rod 2 becomes loose due to the increase of the accumulated water. In this way, whenever the tapered rod 2 cannot be pulled out, a part of the water flow will be released around the tapered rod 2, so as to prevent damage to the foundation pit 36 and the tapered rod 2 caused by hard pulling. At the same time, the suction force required for the piston 25 to move upward is greater, and the suction force required for the piston 25 to move downward is smaller, so that when the tapered rod 2 descends, the pressure generated by the descent of the tapered rod 2 will not cause the sliding groove 21 to slide upward and cause the accumulated water to flow back into the inside of the water seepage tank 18.

[0045] Among them, the connection structure includes two connection blocks 26, which are symmetrically arranged at both ends of the rotating rod 5. A limiting groove 28 is formed on the side of each connection block 26 away from the rotating rod 5. A threaded rod 30 is slidably connected to the inner wall of the limiting groove 28, and a fourth spring 29 is fixedly connected between one end of the threaded rod 30 and the inner wall of the limiting groove 28.

[0046] One end of the connection block 26 away from the rotating rod 5 is fixedly connected with a protective sleeve 31. A positioning block 33 is arranged on the side of the threaded rod 30 away from the connection block 26. Inner threaded cylinders 32 are symmetrically arranged on both sides of the positioning block 33, and each inner threaded cylinder 32 can be screwed with the threaded rod 30 at the corresponding position. One end of each connection block 26 is fixedly connected with a protective sleeve 31 that can be movably connected with the inner threaded cylinder 32. Connecting holes 27 are formed through the side surfaces of the positioning block 33 and the connection block 26.

[0047] Specifically, when two pile bodies 1 are inserted side by side into the foundation pit 36, by placing the positioning block 33 between the two pile bodies 1, and then inserting the inner threaded cylinders 32 on both sides of the chute 3 into the corresponding protective sleeves 31, the threaded rod 30 slides inside the limiting groove 28 due to the notch of the inner threaded cylinder 32 abutting against the threaded rod 30 at the corresponding position, and the fourth spring 29 is stretched to store elastic potential energy. Then, by rotating the positioning block 33, the inner threaded cylinders 32 on both sides of the positioning block 33 are threadedly connected with the corresponding threaded rods 30. After the inner threaded cylinder 32 rotates and tightens the threaded rod 30 by two turns, it can be rotated in the reverse direction to make the positioning block 33 in a horizontal position. At this time, an anchor rod can be installed on the wall of the foundation pit 36 through the connecting hole 27 on the positioning block 33, and the anchor rod is screwed with the connecting hole 27 on the positioning block 33.

[0048] Reference Figure 6 When a number of pile bodies 1 and tapered rods 2 are installed in a row on the wall of the foundation pit 36, if the soil under one of the tapered rods 2 moves downward, at this time, due to the settlement of the bottom of the foundation pit 36, the staff needs to carry out secondary anchor rod reinforcement around the tapered rod 2, but the orientation of the anchor rod needs to be slightly deflected towards the bottom of the pit. At this time, the rack 6, the gear 8 and the elastic transmission structure will drive the rotating rod 5 to rotate slightly clockwise. During the rotation of the rotating rod 5, the connection block 26 will be driven to rotate slightly. At this time, the orientation of the connecting hole 27 on the connection block 26 will produce a slight offset by rotating clockwise. When the staff installs the anchor rod on the connecting hole 27 on the connection block 26, the reverse direction of the anchor rod will produce a slight offset, which can assist the staff to quickly position the secondary large anchor rod, reduce the measurement time, avoid further soil movement, and at the same time, during the rotation of the rotating rod 5, the two connection blocks 26 on both sides will be further screwed and rotated with the threaded rods 30 at the corresponding positions, so that the connection between the pile body 1 with soil movement and the pile bodies 1 installed side by side on both sides is further tightened, and the support firmness in the area of soil movement is improved.

[0049] Working principle: The staff first inserts the tapered rod 2 into the bottom of the foundation pit 36, and makes the side surface of the tapered rod 2 contact with the inner wall of the foundation pit 36. Then, every two tapered rods 2 are connected together through the positioning block 33 and the internal thread cylinder 32. Then, an anchor rod is installed in the connection hole 27 on the positioning block 33, and the anchor rod is inserted into the inner wall of the foundation pit 36. When there is water accumulation on the outer wall of the tapered rod 2, the accumulated water will penetrate into the inside of the water seepage groove 18. Then, the penetrated water is pumped into the cavity of the chute 3 through the water suction pipe 20 for storage. At the same time, when the land moves downward and drives the tapered rod 2 to move, the water level inside the chute 3 changes, and the change of the water level can also be observed through the scale 34 to judge whether the land moves downward. When there is local subsidence at the bottom of the foundation pit 36, the downward movement of the land drives the tapered rod 2 to slide downward and drives the rotating rod 5 to rotate. The rotation of the rotating rod 5 makes the connecting block 26 rotate, thereby adjusting the orientation of the connection hole 27, which is convenient for the staff to position the anchor rod for secondary installation in the connection hole 27. At the same time, when the connection hole 27 rotates, the connection structure can make the connection between the pile body 1 in the land subsidence area and the pile bodies 1 installed on both sides closer, improving the support firmness. At the same time, when it is necessary to pull out the tapered rod 2, when the soil adsorption force on the surface of the tapered rod 2 is too strong, every time the tapered rod 2 rises, a part of the water inside the chute 3 will be discharged into the periphery of the tapered rod 2 through the water seepage port 19, reducing the soil adsorption force around the tapered rod 2. Then, the active connection structure is disconnected, causing the tapered rod to descend. By repeating the process of continuously lifting and adding water up and down, the soil around the tapered rod 2 can be made more moist and loose, facilitating the pulling out of the tapered rod and preventing damage to the foundation pit caused by forced pulling out.

[0050] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A multi-directionally supported foundation pit retaining pile, comprising a pile body (1), characterized in that: A chute (3) is provided at the lower end of the pile body (1). A tapered rod (2) is slidably connected to the inner wall of the chute (3). A cavity (4) is provided on the side surface of the tapered rod (2). A rack (6) is fixedly connected to the inner wall of the cavity (4). A gear (8) is engaged with one side of the rack (6). Shaft rods (7) are rotatably connected to both sides of the gear (8). Active connection structures are installed on both sides of the gear (8). A rotating rod (5) is rotatably connected to both sides of the pile body (1). An elastic transmission structure is installed on the outer wall of the rotating rod (5), and the elastic transmission structure is connected to the shaft rod (7) close to the inner wall of the chute (3), so as to enable the gear (8) to rotate rapidly in the reverse direction and drive the tapered rod (2) to move in the reverse direction when the active connection structure fails to drive the gear (8) to rotate. Two water extraction pipes (20) are symmetrically provided inside the tapered rod (2). Elastic valve structures are installed at the upper openings of the water extraction pipes (20). A water seepage structure communicated with the water extraction pipes (20) is installed at the bottom of the tapered rod (2). A scale (34) is embedded in the outer wall of the pile body (1). Connection structures are installed at both ends of the rotating rod (5) for connecting adjacent rotating rods (5). The elastic valve structure includes a sliding groove (21) opened on the inner side wall of the water extraction pipe (20). Empty grooves (22) are opened at the upper and lower openings of the sliding groove (21), and the upper empty groove (22) is communicated with the chute (3). A drain cover (23) is fixedly connected to the upper opening of the upper empty groove (22). A third spring (24) is fixedly connected to the lower end of the drain cover (23). A piston (25) slidably connected to the sliding groove (21) is fixedly connected to the lower end of the third spring (24). The connection structure includes two connection blocks (26) symmetrically arranged at both ends of the rotating rod (5). A limiting groove (28) is opened on the side of each connection block (26) away from the rotating rod (5). A threaded rod (30) is slidably connected to the inner wall of the limiting groove (28). A fourth spring (29) is fixedly connected between one end of the threaded rod (30) and the inner wall of the limiting groove (28). A protective sleeve (31) is fixedly connected to the end of the connection block (26) away from the rotating rod (5). A positioning block (33) is arranged on the side of the threaded rod (30) away from the connection block (26). Internal threaded cylinders (32) are symmetrically arranged on both sides of the positioning block (33), and each internal threaded cylinder (32) can be screwed with the threaded rod (30) at the corresponding position. A protective sleeve (31) capable of being movably connected to the internal threaded cylinder (32) is fixedly connected to one end of each connection block (26). Connection holes (27) are penetrated through the side surfaces of the positioning block (33) and the connection block (26).

2. The multi-directionally supported foundation pit retaining pile according to claim 1, characterized in that: The active connection structure includes two first couplings (10), the first couplings (10) are symmetrically arranged on both sides of the gear (8) and are slidably connected to the corresponding shaft rods (7). A first spring (9) is fixedly connected between each first coupling (10) and the gear (8). A second coupling (11) is meshed on the side of each first spring (9) away from the gear (8), and the second coupling (11) is fixedly connected to the corresponding shaft rod (7).

3. The multi-directionally supported foundation pit retaining pile according to claim 1, characterized in that: The elastic transmission structure includes a positioning ring (16), the positioning ring (16) is fixedly connected to the outer wall of the rotating rod (5). A belt (13) is also rotatably connected to the outer wall of the rotating rod (5). A second spring (15) is fixedly connected between the positioning ring (16) and the belt (13). A small pulley (12) is sleeved on the outer wall of the shaft rod (7) near the inner wall of the chute (3). The small pulley (12) and the large pulley (14) are jointly sleeved with a belt (13).

4. The multi-directionally supported foundation pit retaining pile according to claim 3, characterized in that: One end of the shaft rod (7) away from the small pulley (12) is fixedly connected with a motor (17), and the motor (17) is fixedly connected to the inner wall of the chute (3).

5. A multi-directionally supported foundation pit retaining pile according to claim 1, characterized in that: The water seepage structure includes a water seepage tank (18), the water seepage tank (18) is opened inside the lower end of the tapered rod (2) and is communicated with a water suction pipe (20). A plurality of water seepage ports (19) communicated with the water seepage tank (18) are opened at the lower end of the tapered rod (2).

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