Quick mounting structure with function of reinforcing PHC pipe pile head

Abstract

The invention provides a quick mounting structure with a PHC pipe pile head strengthening function, which comprises a pipe pile and a pile head, the inner wall of the pipe pile is fixedly connected with a support plate, the center of the support plate is in threaded connection with a screw rod, one end of the screw rod is in transmission connection with a conical block, and a plurality of guide rods are annularly mounted on the inner wall of the pipe pile below the support plate; the modular assembly design is adopted between the tubular pile and the pile head, construction site welding is avoided, the construction progress is accelerated, safety is improved, the screw rod is reversely rotated to drive the conical block to ascend and descend, and when the conical block descends, transverse acting force is applied to the guide block through the inclined block, so that the construction efficiency is improved; and when the pipe pile and the pile head are assembled, the forward rotation screw rod drives the conical block to move upwards, the reset spring drives the positioning block to abut against the limiting groove through the guide block for limiting, the worn pile head can be quickly disassembled conveniently and efficiently, and the operability and practicability of the structure are improved.

Description

Technical Field

[0001] The invention relates to the technical field of PHC pipe pile heads, and in particular to a quick installation structure capable of strengthening the PHC pipe pile head. Background Art

[0002] The PHC pile head refers to the topmost part of the lower end of the PHC pile, which is the part where the pile has to overcome the maximum side resistance and end resistance of the soil to the pile during the construction process. It is easy to cause damage to the PHC pile head, so its connection method and structural strength are the key to the PHC pile head technology.

[0003] For example, the publication number CN114411722A discloses an anti-pullout pile head for PHC pipe piles, which is composed of a PHC pile end plate, a triangular cone rib plate, a pile tip, a pile tip plate, a pile tip head and a pile body; the PHC pile end plate and the pile tip plate are respectively welded at both ends of the pile body, the pile tip is welded on the pile tip plate, and the pile tip head is welded on the pile tip. The number of the triangular cone rib plates is four, and the circumferentially uniformly distributed welded pile body increases the anti-freeze pullout effect of the pile head. The bottom circle diameter of the pile tip head is 130mm, the top circle diameter is 20mm, and the material is steel, and the surface of the pile tip head is galvanized; the surface of the PHC pile end plate, the triangular cone rib plate, the pile tip and the pile body are galvanized, and are connected to the PHC pipe pile by welding with embedded iron parts. The pile head is surrounded by triangular cone rib plates, which can effectively increase the friction resistance between the pile foundation and the foundation, and effectively solve the problem of pile foundation freezing pullout in frozen soil areas.

[0004] However, in the prior art, conventional pipe piles and pile heads are usually welded together. When the pile head is worn, it needs to be replaced. The replacement of the pile head fixed by welding is cumbersome and complicated, which affects the subsequent construction efficiency, thereby limiting the practicability of the device to a certain extent. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the pile head is prone to wear in the prior art. On the one hand, it is considered to strengthen it, on the other hand, it is considered to facilitate rapid construction, and on the third hand, it is considered to be easy and quick to replace when damaged, unlike the pile head fixed by welding, which is more cumbersome and complicated to replace, affecting the subsequent construction efficiency.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a quick installation structure with the function of strengthening the pile head of PHC pipe pile, including a pipe pile and a pile head, the inner wall of the pipe pile is fixedly connected with a support plate, the center of the support plate is threadedly connected with a screw, one end of the screw is drivingly connected with a conical block, the inner wall of the pipe pile is located below the support plate and a plurality of guide rods are annularly installed, the surfaces of the guide rods are slidably connected with guide blocks, the bottom end of each guide block is fixedly connected with a positioning block, the top end of each guide block is fixedly connected with an inclined block, the outer wall of each guide block and the inner wall of the pipe pile are provided with a reset spring, and the reset spring is wound around the guide rod.

[0007] As a preferred implementation manner, an end portion is fixedly connected to the axis center of the upper surface of the pile head, and a through hole is opened in the middle of the end portion.

[0008] As a preferred implementation, the outer side wall of the end portion is fixedly connected to a limiting block, and the outer side wall of the limiting block is provided with a limiting groove for clamping with the positioning block.

[0009] As a preferred implementation manner, the pipe pile and the pile head are connected via a reinforcing inner sleeve, and the outer edge of the pile head is inlaid with reinforcing ribs.

[0010] As a preferred implementation, the dividing point of the reinforcing rib is at the same height as the edge of the upper surface of the pile head.

[0011] As a preferred implementation, one end of each guide rod is fixedly connected to a stopper.

[0012] As a preferred embodiment, the outer surface of the pile head is sprayed with a corrosion-resistant coating.

[0013] As a preferred embodiment, the pipe pile and the pile head are bonded and connected by a reinforcing inner sleeve, and the specific connection is as follows:

[0014] Pour concrete into the through hole, then stick the reinforced inner sleeve to the inner wall of the end of the pipe pile, insert the end into the inner cavity of the pipe pile, and use engineering glue again to bond the edge of the upper surface of the pile head to the reinforced inner sleeve.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. The present invention adopts a modular assembly design between the pipe pile and the pile head, and the reverse screw drives the conical block to rise and fall. When the conical block descends, a lateral force is applied to the guide block through the inclined block, so that the guide block slides in the guide rod and compresses the reset spring. When the pipe pile and the pile head are assembled, the forward screw drives the conical block to move upward, and the reset spring drives the positioning block to abut against the limit groove through the guide block to limit the position, thereby avoiding welding and achieving the purpose of rapid installation. At the same time, the worn pile head can be quickly disassembled conveniently and efficiently, thereby improving the practicality of the device.

[0017] 2. The present invention strengthens the inner sleeve and the reinforcing ribs, uses engineering glue to adhere the pipe pile, the pile head and the reinforced inner sleeve, and reinforces and seals the connection between the pipe pile and the pile head. At the same time, the bearing capacity of the connection between the pipe pile and the pile head is improved, the stability of the device is enhanced, and the side resistance and end resistance of the soil to the pile tip are overcome, and the damage rate of the PHC pipe pile head is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a quick installation structure for strengthening the head of a PHC pile provided by the present invention;

[0019] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a quick installation structure for strengthening the head of a PHC pipe pile provided by the invention;

[0020] Figure 3 The invention provides a quick installation structure with a function of strengthening the head of a PHC pipe pile. Figure 2 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 4 The invention provides a quick installation structure with a function of strengthening the head of a PHC pipe pile. Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0022] Legend:

[0023] 1. Pipe pile; 2. Pile head; 3. Reinforced inner sleeve; 4. Reinforcement ribs; 5. End; 6. Through hole; 7. Limit block; 8. Limit groove; 9. Support plate; 10. Screw; 11. Conical block; 12. Guide rod; 13. Stop block; 14. Guide block; 15. Oblique block; 16. Positioning block; 17. Return spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-4 The present invention provides a technical solution: a quick installation structure with the function of strengthening the pile head of a PHC pipe pile, comprising a pipe pile 1 and a pile head 2, the inner wall of the pipe pile 1 is fixedly connected with a support plate 9, the center of the support plate 9 is threadedly connected with a screw 10, one end of the screw 10 is drivingly connected with a conical block 11, the inner wall of the pipe pile 1 is located below the support plate 9 and is provided with a plurality of guide rods 12, the guide rods 12 are annularly distributed, the surfaces of the guide rods 12 are slidably connected with guide blocks 14, the bottom end of each guide block 14 is fixedly connected with a positioning block 16, the top end of each guide block 14 is fixedly connected with an inclined block 15, the outer wall of each guide block 14 is connected to the pipe pile 1 A reset spring 17 is installed between the inner walls of the pile 1 and the inner wall of the pile 2. The reset spring 17 is wound around the guide rod 12. A modular assembly design is adopted between the pile and the pile head. The reverse screw 10 drives the conical block 11 to rise and fall. When the conical block 11 descends, the inclined block 15 applies a lateral force to the guide block 14, so that the guide block 14 slides in the guide rod 12 and compresses the reset spring 17. When the pile 1 and the pile head 2 are assembled, the forward screw 10 drives the conical block 11 to move upward, and the reset spring 17 drives the positioning block 16 to contact the limiting groove 8 through the guide block 14 to limit the position. The pile head that is worn can be quickly disassembled conveniently and efficiently, and the installation and use are more convenient, which is suitable for large-scale promotion. The guide block 14, the inclined block 15 and the positioning block 16 can be an integrated structure.

[0026] like Figure 1-4 As shown, an end portion 5 is fixedly connected to the axis center of the upper surface of the pile head 2, a through hole 6 is provided in the middle of the end portion 5, a limiting block 7 is fixedly connected to the outer wall of the end portion 5, and a limiting groove 8 for clamping with the positioning block 16 is provided on the outer wall of the limiting block 7. By pouring concrete into the through hole 6, the strength and toughness of the pile head 2 are enhanced, thereby improving the stability of the device operation.

[0027] like Figure 1-4 As shown, the pipe pile 1 and the pile head 2 are bonded together by a reinforcing inner sleeve 3, and the outer edge of the pile head 2 is inlaid with reinforcing ribs 4. The equidividing point of the reinforcing ribs 4 is at the same height as the edge of the upper surface of the pile head 2. The pipe pile, the pile head and the reinforcing inner sleeve are bonded together using engineering glue, which reinforces and seals the connection between the pipe pile and the pile head, while improving the bearing capacity of the connection between the pipe pile and the pile head and enhancing the stability of the device.

[0028] like Figure 1-4As shown, one end of each guide rod 12 is fixedly connected to a stopper 13. Due to the design of the stopper 13, the moving distance of the guide block 14 is limited to prevent the guide block 14 from moving out and falling, thereby improving the overall stability of the device.

[0029] like Figure 1-4 As shown, the outer surface of the pile head 2 is sprayed with a corrosion-resistant coating, which prolongs the service life of the pile head 2, prevents the pile head 2 from being eroded by the natural environment, and protects the appearance and performance of the pile head 2.

[0030] Working principle: When installing and using the PHC pile head, first pour concrete into the through hole 6 to enhance the strength and toughness of the pile head 2, then use engineering glue to stick the reinforcing inner sleeve 3 to the inner wall of the end of the pile 1, and then insert the end 5 into the inner cavity of the pile 1, and use engineering glue again to adhere the edge of the upper surface of the pile head 2 to the reinforcing inner sleeve 3, so that the pile 1 and the pile head 2 form a whole, and reinforce and seal the connection between the pile 1 and the pile head 2, thereby improving the stability of the connection between the pile 1 and the pile head 2, and then reverse the screw 10 to drive the conical block 11 to rise and fall, and the conical block 11 descends through the inclined block 15 applies a lateral force to the guide block 14, so that the guide block 14 slides in the guide rod 12 and compresses the reset spring 17. When the pipe pile 1 and the pile head 2 are assembled, the forward-rotating screw 10 drives the conical block 11 to move upward, and the reset spring 17 drives the positioning block 16 to abut against the limiting groove 8 through the guide block 14 to limit the pile head. When the pile head is worn, it is convenient to repair and replace, and the practicability is improved. At the same time, the impact energy in the pile sinking process is effectively absorbed, and the strength and toughness of the pile head are improved. With the help of the reinforcing rib 4, the bearing capacity of the connection between the pipe pile 1 and the pile head 2 is improved. The overall structure is simple, the operation is convenient, and it is suitable for large-scale promotion.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A quick installation structure for strengthening the pile head of a PHC pipe pile, comprising a pipe pile (1) and a pile head (2), characterized in that: The inner wall of the pipe pile (1) is fixedly connected to a support plate (9), a screw rod (10) is threadedly connected to the center of the support plate (9), one end of the screw rod (10) is drivingly connected to a conical block (11), a plurality of guide rods (12) are annularly installed on the inner wall of the pipe pile (1) below the support plate (9), the surfaces of the guide rods (12) are slidably connected to guide blocks (14), the bottom end of each guide block (14) is fixedly connected to a positioning block (16), the top end of each guide block (14) is fixedly connected to an inclined block (15), and the outer wall of each guide block (14) and the inner wall of the pipe pile (1) are provided with a return spring (17), the return spring (17) is wound around the guide rod (12).

2. A quick installation structure for strengthening the head of a PHC pile according to claim 1, characterized in that: An end portion (5) is fixedly connected to the axis center of the upper surface of the pile head (2), and a through hole (6) is provided in the middle of the end portion (5).

3. The quick installation structure for strengthening the head of a PHC pile according to claim 2, characterized in that: The outer side wall of the end portion (5) is fixedly connected to a limiting block (7), and the outer side wall of the limiting block (7) is provided with a limiting groove (8) for clamping with a positioning block (16).

4. The quick installation structure for strengthening the head of a PHC pile according to claim 2, characterized in that: The pipe pile (1) and the pile head (2) are connected via a reinforcing inner sleeve (3), and the outer edge of the pile head (2) is inlaid with reinforcing ribs (4).

5. The quick installation structure for strengthening the head of a PHC pile according to claim 4, characterized in that: The dividing point of the reinforcing rib (4) is at the same height as the edge of the upper surface of the pile head (2).

6. The quick installation structure for strengthening the head of a PHC pile according to claim 1, characterized in that: One end of each guide rod (12) is fixedly connected to a stopper (13).

7. The quick installation structure for strengthening the head of a PHC pile according to claim 1, characterized in that: The outer surface of the pile head (2) is sprayed with a corrosion-resistant coating.

8. The quick installation structure for strengthening the head of a PHC pile according to claim 4, characterized in that: The pipe pile (1) and the pile head (2) are bonded and connected via a reinforcing inner sleeve (3), and the specific connection is as follows: Concrete is poured into the through hole (6), and then the reinforcing inner sleeve (3) is adhered to the inner wall of the end of the pipe pile (1). The end (5) is then inserted into the inner cavity of the pipe pile (1), and the edge of the upper surface of the pile head (2) is adhered to the reinforcing inner sleeve (3) again using engineering glue.

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