Prestressed pipe pile joint connecting device

Abstract

The utility model provides a prestressed pipe pile section connecting device. The prestressed pipe pile section connecting device is composed of connectors and fixing lock bolts of the connectors, wherein the connectors are fixed to the butt joint ends of two prestressed pipe piles respectively. The butt joint end of the connector is provided with embedded teeth which are vertically and tightly inserted and embedded in a convex-concave mode, and the side inserting face of at least one of the embedded teeth of the connector is covered with a buffering rubber layer. According to the technical scheme, the technical requirements of pile splicing can be met, meanwhile, the pile splicing operation efficiency is greatly improved, and the technical advantage that the butt joint quality is unified is achieved.

Description

Technical Field

[0001] This patent application relates to foundation components for construction engineering, and more particularly to a prestressed pipe pile segment connection and fixing device. Background Art

[0002] Prestressed pipe piles have become the most widely used solid foundation components for various construction projects due to their excellent bearing capacity, tensile strength, small settlement and many other technical advantages. In the actual construction of prestressed pipe piles, due to the limited length of the pipe piles, multiple pile sections need to be connected and sunk into the ground in sections to achieve the technical requirements of the pile foundation depth. At present, the prestressed pipe pile section connection generally adopts welding to connect the piles. Because welding pile connection has high requirements for the quality and strength of the interface connection, the welding site of the pile connection is mainly carried out by welders with professional operation level; and there are also high requirements for the welding environment. For example, the humid environment has a great impact on the welding quality. The efficiency of the pile connection welding operation is relatively low, and it is difficult to uniformly meet the technical index requirements. Therefore, it is urgent to improve the existing prestressed pipe pile connection construction method, while meeting the stability and reliability of the pile connection technical requirements, reducing the sensitivity of the pile connection to environmental factors. Summary of the invention

[0003] The utility model aims to improve the construction process of prestressed pipe pile connection, reduce the sensitivity of the pile connection to environmental factors, improve the efficiency of the pile connection while meeting the stability and reliability of the pile connection technology requirements, and provide a new type of prestressed pipe pile section connection device.

[0004] The technical solution of the prestressed pipe pile section connection device provided by the utility model mainly includes:

[0005] A prestressed pipe pile joint connection device, comprising a connection head fixed to the butt ends of two prestressed pipe piles and a fixing lock bolt of the connection head;

[0006] The connector has cogging teeth on the butt end for vertically interlocking and fitting with each other;

[0007] The cogs are formed by staggered convex and concave shapes with equal central angles on the cross section of the pile body;

[0008] and the side engagement surface of at least one of the cogs of the connector is covered with a buffer rubber layer;

[0009] The fixed locking bolt is a bolt used for fastening between adjacent cogs of the two connectors.

[0010] One preferred option of the above overall technical solution is that the inner ends of the cogs of a connector converge on a central core column, and the center of another connector corresponds to the aforementioned connector, forming a hollow core for plug-in engagement at the inner ends of the cogs.

[0011] One of the preferred options of the above-mentioned overall technical solution is that the fixed locking bolt is radially penetrated by the cogs of the connector with a hollow core and locked into the central core column of the aforementioned connector to fasten the two connectors.

[0012] One preferred option of the above overall technical solution is that the fixed lock bolt starts from the outer surface of the connector tooth cylinder and passes straight through to the tooth adjacent to the mating connector, and each lock bolt hole is symmetrically arranged with the center of the circle.

[0013] One of the preferred options of the above-mentioned overall technical solution is that each lock bolt hole, the hole end of the cylindrical outer surface of the connector and the through hole end adjacent to the connector side mating surface are all embedded with an internal nut that cooperates with the fixed lock bolt thread.

[0014] One preferred option of the above overall technical solution is that the locking bolt holes starting from the two connectors are each a group and are spaced apart in the axial direction.

[0015] The technical solution of the prestressed pipe pile section connection device disclosed in this patent application replaces the existing welding technical means of pile connection by inserting a convex and concave interlocking fixing structure at the butt end of the pipe pile, which can meet the technical requirements of pile connection and eliminate the sensitivity of the welding pile connection means to environmental factors. Its fan-shaped interlocking tooth insertion method further ensures the quality of pile connection and greatly improves the efficiency of pile connection operations, and has the technical advantage of uniform butt connection quality. In addition, the buffer rubber layer between the teeth can fully ensure the plug-in firmness and fit while effectively buffering the impact and friction during the plug-in. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a docking state diagram of the utility model.

[0017] Figure 2 It is a cross-sectional view from position A after the two connectors are butt-jointed. DETAILED DESCRIPTION

[0018] The technical content of the prestressed pipe pile segment connection device of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] The prestressed pipe pile section connection device is composed of a connection head and a fixing lock bolt respectively fixed at the butt ends of two prestressed pipe piles 1 and 2.

[0020] The butt end of the connector is provided with cogs 7 for vertically interlocking with each other. The cogs 7 are staggered with convex and concave at equal central angles on the cross section of the pile body.

[0021] In such Figure 1In the embodiment structure, one of the connectors is the upper connector 11 in the attached drawing, and the inner ends of the cogs 7 on it converge on the central core column 10, and the center of the lower connector 12 corresponds to the upper connector 11, and a hollow core is formed at the inner ends of the cogs 7, and the two connectors 11 and 12 are plugged into each other and fit tightly.

[0022] While ensuring the firmness and fit of the two connectors 11, 12, it is also necessary to effectively buffer the inevitable friction and collision during the plug-in process. At least one of the upper and lower connectors 11, 12 has a buffer rubber layer 3 on the plug-in surface of the cog 7 side to avoid mutual damage to the cogs 7 during plug-in.

[0023] The fixed locking bolt is used to lock into the space between the adjacent cogging teeth 7, tighten the two connectors 11 and 12 to the engaged state, and reinforce the two connectors 11 and 12 on the basis of the engagement.

[0024] The fixed lock bolt is fastened in one way by having the teeth of the lower connector 12 radially penetrate and lock into the central core column 10 of the upper connector 12; its lock bolt hole starts from the hole end on the outer surface of the connector cylinder and the plug-in through hole end adjacent to the connector side, both of which are embedded with internal nuts that match the fixed lock bolt threads.

[0025] The fixed lock bolt has another fastening implementation structure as follows Figure 2 As shown, each of the locking bolt holes starts from the outer surface of the connecting head cylinder and passes through the cogs adjacent to the connecting head, and each of the locking bolt holes is symmetrically arranged with the center of the circle.

[0026] To further enhance the fastening strength, the locking bolt hole groups A and B starting from the upper and lower connectors 11 and 12 respectively are spaced apart in the axial direction.

[0027] The locking bolt holes start from the hole end on the cylindrical outer surface of the connector and the plug-in through hole end adjacent to the connector side, and are both embedded with internal nuts a and b that match the fixed locking bolt threads.

Claims

1. A prestressed pipe pile joint connection device, comprising a connection head fixed to the butt ends of two prestressed pipe piles and a fixing lock bolt of the connection head; characterized in that: The connector has cogging teeth (7) on the butt end for vertically inserting and interlocking convex and concave joints up and down; The cogs (7) are formed by staggered convex and concave shapes with equal central angles on the cross section of the pile body; The side engagement surface of at least one of the cogs of the connector is covered with a buffer rubber layer (3); The fixed locking bolt is a bolt used for fastening between adjacent cogs of the two connectors.

2. The prestressed pipe pile segment connection device according to claim 1 is characterized in that: The inner ends of the cogs (7) of one connector converge on a central core column (10), and the center of the other connector corresponds to the aforementioned connector, forming a hollow core for insertion and engagement at the inner ends of the cogs.

3. The prestressed pipe pile segment connection device according to claim 2 is characterized in that: The fixed locking bolt is radially penetrated by the connector cog with a hollow core and locked into the central core column of the aforementioned connector to fasten the two connectors.

4. The prestressed pipe pile segment connection device according to claim 1, characterized in that: The fixed lock bolt starts from the outer surface of the connecting head cog cylinder and passes straight through to the cogs adjacent to the engaging connecting head, and each lock bolt hole is symmetrically arranged with the center of the circle.

5. The prestressed pipe pile segment connection device according to claim 1 or 4, characterized in that: Each lock bolt hole, the hole end on the cylindrical outer surface of the connector and the through hole end adjacent to the plug-in surface on the connector side are all embedded with an internal nut that matches the fixed lock bolt thread.

6. The prestressed pipe pile segment connection device according to claim 4, characterized in that: The locking bolt holes respectively starting from the two connectors form a group and are arranged at intervals in the axial direction.

Images