Mixed reinforcement prestressed concrete pipe pile

Abstract

The utility model relates to the technical field of concrete pipe piles, and discloses a mixed reinforcement prestressed concrete pipe pile which comprises a pipe body, the two ends of the pipe body are fixedly connected with an upper end head and a lower end head respectively, and a plurality of evenly-arranged screw rod holes are formed in the side, away from the pipe body, of the lower end head. Nut holes are formed in the sides, close to the pipe body, of the multiple screw holes, connecting nuts are slidably connected into the multiple nut holes, threaded rods are fixedly connected to the sides, away from the pipe body, of the multiple connecting nuts, the other ends of the multiple threaded rods penetrate through the adjacent screw holes, and threaded holes matched with the multiple threaded rods are formed in the side, away from the pipe body, of the upper end head. According to the mixed reinforcement prestressed concrete pipe pile, by extruding the threaded rod and the connecting nut, the threaded rod rotates to be connected with a threaded hole of another pipe pile, the pile splicing operation of the pipe piles is completed, meanwhile, the two connected pipe piles can be conveniently disassembled when not needed, and the applicability of the pile splicing operation of the pipe piles is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pipe piles, in particular to a mixed reinforced prestressed concrete pipe pile. Background Art

[0002] Mixed reinforced prestressed concrete pipe piles (hereinafter referred to as "pipe piles") are prestressed concrete pipe piles that use mixed reinforcement in prefabricated components. This type of pipe pile combines the advantages of multiple materials, such as steel bars, steel wires and glass fibers, and has the characteristics of high strength, light weight, corrosion resistance and good durability. It is one of the widely used building materials in the construction industry. After the pipe piles are driven into the foundation, if the pipe piles need to be extended, a connecting operation is required to keep the connecting sections of the upper and lower pipe piles straight, clean the connection surface, and then weld the upper and lower pipe piles together.

[0003] For example, a prestressed concrete pipe pile disclosed in the patent with publication number CN215052942U includes a pipe body, ends are arranged at both ends of the pipe body, spiral ribs are arranged inside the pipe body, prestressed steel bars are arranged inside the pipe body in contact with the spiral ribs, a connecting ring is arranged on the outer surface of the pipe body, a protruding block is arranged on the connecting ring, a strong top-tightening spring is arranged inside the protruding block, a reinforcing plate is arranged on the strong top-tightening spring, a protective pipe is arranged outside the protruding block, and an insert plate is arranged on the protective pipe. The utility model is a prestressed concrete pipe pile, steel bars and concrete are arranged between the protective pipe and the pipe body, which can protect and reinforce the pipe body, improve the firmness of the finished pipe pile, and improve the service life of the pipe pile. After the insert plate is pulled out, the strong top-tightening spring will push out the reinforcing plate, and the reinforcing plate will extend out of the protective pipe and insert into the soil around the pipe body, effectively reinforcing the concrete pipe pile after being driven into the ground, making it more stable and preventing the pipe pile from being offset due to soil flow.

[0004] However, the prestressed concrete pipe piles in the above technology still have the following problems:

[0005] When the upper and lower pipe piles are connected by welding and the piles are sunk, if the pipe pile is tilted or the sinking position needs to be changed, the pipe pile needs to be pulled out. At this time, the two pipe piles cannot be separated due to welding, resulting in the overall length of the pipe pile being too high, which affects the re-sinking of the piles and may even make the pipe pile unusable. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a mixed reinforced prestressed concrete pipe pile, such as being able to more conveniently splice or separate two pipe piles.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mixed reinforced prestressed concrete pipe pile, comprising a pipe body, wherein the two ends of the pipe body are respectively fixedly connected with an upper end and a lower end, a side of the lower end away from the pipe body is provided with a plurality of evenly arranged screw holes, a side of the plurality of screw holes close to the pipe body is provided with nut holes, a plurality of nut holes are slidably connected with connecting nuts, a side of the plurality of connecting nuts away from the pipe body is fixedly connected with threaded rods, the other ends of the plurality of threaded rods pass through adjacent screw holes, a side of the upper end away from the pipe body is provided with threaded holes matching the plurality of threaded rods, a plurality of nut holes are penetrated through the outward sides thereof, a plurality of limiting holes are connected with limiting components, and the plurality of limiting components are respectively connected to a plurality of connecting nuts.

[0008] Furthermore, the limit assembly includes a limit rod and a limit plate, plate grooves are provided on both sides of the limit hole away from the nut hole, the limit rod is slidably connected to the limit hole, the two ends of the limit plate are respectively slidably connected to the two plate grooves, the end of the limit rod away from the nut hole is fixedly connected to the limit plate, a plurality of evenly arranged slots are provided on the outer wall of the connecting nut, and the end of the limit rod away from the limit plate is slidably connected to the slots.

[0009] Furthermore, a plurality of spring holes are provided on one side of the plate slot close to the limiting hole, return springs are fixedly connected in the plurality of spring holes, and ends of the plurality of return springs away from the spring holes are fixedly connected to the limiting plate.

[0010] Furthermore, one end of the limiting rod close to the connecting nut is designed as an inclined surface, and the inclined surface is opposite to the forward rotation direction of the threaded rod.

[0011] Furthermore, a hemispherical rotating block is fixedly connected to a side of the connecting nut away from the threaded rod, and a top of the hemispherical rotating block abuts against a side of the nut hole close to the tube body.

[0012] Furthermore, the nut hole has a certain depth, and the connecting nut can slide in the nut hole for a distance not less than the length of the threaded rod. A blocking hole is provided on the outward side of the nut hole, and the side of the blocking hole away from the tube body is flush with the top of the hemispherical rotating block.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] This type of mixed reinforced prestressed concrete pipe pile completes the pipe pile connection operation by squeezing the threaded rod and connecting the nut so that the threaded rod is rotated and connected to the threaded hole of another pipe pile. At the same time, it is convenient to disassemble the two connected pipe piles when not needed, thereby improving the applicability of the pipe pile connection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance connection structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall appearance connection structure of the utility model from another angle;

[0017] Figure 3 Based on Figure 1 A schematic cross-sectional view of the lower end connection structure;

[0018] Figure 4 Based on Figure 3 Exploded schematic diagram of the connection structure;

[0019] Figure 5 Based on Figure 2 A schematic cross-sectional view of the lower end connection structure;

[0020] Figure 6 Based on Figure 4 An enlarged schematic diagram of part of the connection structure.

[0021] In the figure: 1, tube body; 2, upper end; 3, lower end; 4, connecting nut; 5, threaded rod; 6, limiting rod; 7, limiting plate; 8, hemispherical rotating block; 9, reset spring; 201, threaded hole; 301, screw hole; 302, nut hole; 303, limiting hole; 304, plate groove; 305, blocking hole; 306, spring hole; 401, slot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1 - Figure 6 A mixed reinforced prestressed concrete pipe pile comprises a pipe body 1, wherein the two ends of the pipe body 1 are respectively fixedly connected with an upper end head 2 and a lower end head 3, a side of the lower end head 3 away from the pipe body 1 is provided with a plurality of evenly arranged screw holes 301, a side of the plurality of screw holes 301 close to the pipe body 1 is provided with nut holes 302, a plurality of nut holes 302 are slidably connected with connecting nuts 4, a plurality of connecting nuts 4 are fixedly connected with threaded rods 5 on the side away from the pipe body 1, the other ends of the plurality of threaded rods 5 pass through adjacent screw holes 301, a side of the upper end head 2 away from the pipe body 1 is provided with a threaded hole 201 matching with the plurality of threaded rods 5, a plurality of nut holes 302 are penetrated with a limiting hole 303 on the outward side, a plurality of limiting holes 303 are connected with limiting components, and a plurality of limiting components are respectively connected to a plurality of connecting nuts 4.

[0024] like Figure 1 - Figure 6As shown, a mixed reinforced prestressed concrete pipe pile in the utility model is similar to the existing mixed reinforced prestressed concrete pipe pile structure, such as a prestressed concrete pipe pile disclosed in the patent with publication number CN215052942U. The main improvement of the utility model is that the upper and lower pipe piles can be spliced ​​together without welding, which is convenient for the subsequent separation of the two pipe piles. Figures 1 to 6 As shown, when the mixed reinforced prestressed concrete pipe piles in the utility model are in use, when it is necessary to connect the piles, the lower end 3 of the upper pipe pile can be close to the upper end 2 of the lower pipe pile, and the multiple threaded rods 5 are aligned with the multiple threaded holes 201 below, and then the upper pipe pile is slowly lowered. When the threaded rod 5 contacts and squeezes the corresponding threaded holes 201, the connecting nut 4 contacts and abuts against the top of the nut hole 302. At the same time, the inclined force generated by the contact between the threaded rod 5 and the threaded hole 201 makes the threaded rod 5 form a rotation force, thereby making the threaded rod 5 rotate, and as the upper pipe pile is continuously lowered, the threaded rod 5 gradually rotates into the threaded hole 201 of the lower pipe pile, and finally the upper and lower pipe piles are successfully connected to each other through the multiple threaded rods 5. Finally, the connecting nut 4 is limited by the limiting component to prevent the connecting nut 4 from rotating and causing the threaded rod 5 to separate from the threaded hole 201. When the lower pipe pile is hammered into the foundation and it is found to be tilted or there is a foundation problem and the pipe pile needs to be pulled out, the limiting component can be separated from the connecting nut 4 after the lower pipe pile is pulled out, and the two pipe piles can be pulled again. The pulling force is used to rotate the threaded rod 5, so that the upper and lower pipe piles are separated from each other, which is convenient for the subsequent pile sinking operation and avoids the connected pipe piles being too long, causing the pile sinking machine to be unable to operate normally. If there is no problem during the pile sinking operation, the connection between the upper and lower pipe piles can be welded when the connection between the lower pipe piles is about to sink into the foundation, so as to further improve the firmness of the connection.

[0025] like Figure 3 - Figure 6 As shown, the limiting assembly includes a limiting rod 6 and a limiting plate 7. Plate grooves 304 are provided on both sides of the limiting hole 303 away from the nut hole 302. The limiting rod 6 is slidably connected to the limiting hole 303. The two ends of the limiting plate 7 are respectively slidably connected to the two plate grooves 304. The end of the limiting rod 6 away from the nut hole 302 is fixedly connected to the limiting plate 7. The outer wall of the connecting nut 4 is provided with a plurality of evenly arranged slots 401. The end of the limiting rod 6 away from the limiting plate 7 is slidably connected to the slots 401. When the threaded rod 5 is connected to the threaded hole 201, the limiting rod 6 is inserted into the limiting hole 303 through the limiting plate 7 and connected to one of the multiple slots 401 on the connecting nut 4, so that the connecting nut 4 is stuck to prevent the connecting nut 4 and the threaded rod 5 from rotating, causing the threaded rod 5 to be separated from the threaded hole 201.

[0026] like Figure 3 - Figure 6 As shown, a plurality of spring holes 306 are provided on one side of the plate slot 304 near the limiting hole 303, and a return spring 9 is fixedly connected in each of the plurality of spring holes 306. One end of each of the return springs 9 away from the spring hole 306 is fixedly connected to the limiting plate 7. When the limiting rod 6 is inserted into one of the slots 401, the limiting plate 7 is pulled by the return spring 9, so that the limiting rod 6 is not easily separated from the slot 401, and the limiting firmness of the connecting nut 4 is further improved.

[0027] like Figure 6 As shown, the end of the limit rod 6 close to the connecting nut 4 is designed with an inclined surface, and the inclined surface is opposite to the positive rotation direction of the threaded rod 5. When the threaded rod 5 rotates and enters the threaded hole 201, the slot 401 of the connecting nut 4 contacts and squeezes the inclined surface of the limit rod 6, thereby pushing the limit rod 6 outward, and then the limit rod 6 moves inward and is clamped into the next slot 401 through the action of the reset spring 9 and the limit plate 7, and the cycle is repeated, so that the limit rod 6 does not hinder the positive rotation of the threaded rod 5 and the connecting nut 4. After the connection of the upper and lower pipe piles is completed, when the threaded rod 5 rotates in the opposite direction, the limit rod 6 is clamped with the slot 401, thereby preventing the threaded rod 5 from rotating in the opposite direction, making the pile connection operation of the pipe pile more convenient, and the pile connection operation can be performed without operating the limit assembly when connecting the piles.

[0028] like Figure 3 and Figure 4 As shown, the side of the connecting nut 4 away from the threaded rod 5 is fixedly connected with a hemispherical rotating block 8, and the top of the hemispherical rotating block 8 abuts against the side of the nut hole 302 close to the tube body 1. The hemispherical rotating block 8 is fixed on the top of the connecting nut 4. When the connecting nut 4 abuts in the nut hole 302, the hemispherical rotating block 8 has less contact with the nut hole 302, so that the resistance during rotation is reduced, and the threaded rod 5 and the connecting nut 4 rotate more smoothly.

[0029] like Figure 3 - Figure 5 As shown, the nut hole 302 has a certain depth, and the connecting nut 4 can slide in the nut hole 302 for a distance not less than the length of the threaded rod 5. A blocking hole 305 is provided on the outward side of the nut hole 302, and the side of the blocking hole 305 away from the pipe body 1 is flush with the top of the hemispherical rotating block 8. The nut hole 302 is designed to have a certain depth, so that the threaded rod 5 can be put into the screw hole 301 and the nut hole 302 during the transportation of the pile, so as to avoid the threaded rod 5 from being bent by collision, and improve the stability of the threaded rod 5 in subsequent use. When the threaded rod 5 is used for pile connection operation, a tool can be used to hold the internal hemispherical rotating block 8 through the blocking hole 305, so that the extrusion and rotation of the threaded rod 5 can be carried out smoothly.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A mixed reinforced prestressed concrete pipe pile, comprising a pipe body (1), Features: The two ends of the tube body (1) are respectively fixedly connected with an upper end head (2) and a lower end head (3); a side of the lower end head (3) away from the tube body (1) is provided with a plurality of evenly arranged screw holes (301); a side of the plurality of screw holes (301) close to the tube body (1) is provided with nut holes (302); a connecting nut (4) is slidably connected in the plurality of nut holes (302); a side of the plurality of connecting nuts (4) away from the tube body (1) is fixedly connected with a threaded rod (5); the other ends of the plurality of threaded rods (5) penetrate adjacent screw holes (301); a side of the upper end head (2) away from the tube body (1) is provided with a threaded hole (201) matching the plurality of threaded rods (5); a side of the plurality of nut holes (302) facing outward is penetrated with a limiting hole (303); a limiting component is connected in the plurality of limiting holes (303); and the plurality of limiting components are respectively connected to the plurality of connecting nuts (4).

2. A mixed reinforced prestressed concrete pipe pile according to claim 1, Features: The limiting assembly comprises a limiting rod (6) and a limiting plate (7); plate grooves (304) are provided on both sides of the limiting hole (303) away from the nut hole (302); the limiting rod (6) is slidably connected to the limiting hole (303); the two ends of the limiting plate (7) are slidably connected to the two plate grooves (304) respectively; the end of the limiting rod (6) away from the nut hole (302) is fixedly connected to the limiting plate (7); the outer wall of the connecting nut (4) is provided with a plurality of evenly arranged slots (401); the end of the limiting rod (6) away from the limiting plate (7) is slidably connected to the slots (401).

3. A mixed reinforced prestressed concrete pipe pile according to claim 2, Features: A plurality of spring holes (306) are provided on one side of the plate groove (304) close to the limiting hole (303), and a return spring (9) is fixedly connected in each of the plurality of spring holes (306). The ends of the plurality of return springs (9) away from the spring holes (306) are fixedly connected to the limiting plate (7).

4. A mixed reinforced prestressed concrete pipe pile according to claim 2 or 3, Features: One end of the limiting rod (6) close to the connecting nut (4) is designed as an inclined surface, and the inclined surface is opposite to the positive rotation direction of the threaded rod (5).

5. A mixed reinforced prestressed concrete pipe pile according to claim 1, 2 or 3, Features: A hemispherical rotating block (8) is fixedly connected to the side of the connecting nut (4) away from the threaded rod (5), and the top of the hemispherical rotating block (8) abuts against the side of the nut hole (302) close to the tube body (1).

6. A mixed reinforced prestressed concrete pipe pile according to claim 5, Features: The nut hole (302) has a certain depth, and the connecting nut (4) can slide in the nut hole (302) for a distance not less than the length of the threaded rod (5). A blocking hole (305) is provided on the outward side of the nut hole (302), and the side of the blocking hole (305) away from the tube body (1) is flush with the top of the hemispherical rotating block (8).

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