CN219315702U

CN219315702U - Connecting device of precast concrete pile

Info

Publication number: CN219315702U
Application number: CN202320199929.6U
Authority: CN
Inventors: 董伟东; 杨金辉; 杨晓彬; 林丽华; 周艳文; 林成
Original assignee: Fujian Dadi Concrete Pile Co ltd
Current assignee: Fujian Dadi Concrete Pile Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-07-07
Anticipated expiration: 2033-02-10

Abstract

A connection device of precast concrete piles, comprising: an upper pile body and a lower pile body to be connected; the end inner chamber of the upper pile body is provided with a first sleeve, and the first sleeve is internally provided with: a first longitudinal bar and a connecting member; the head part of the first longitudinal steel bar extends into the first sleeve to be clamped, and the tail part extends out of the first sleeve to extend into the upper pile body; the head part of the connecting piece is stepped, and the tail part of the connecting piece is provided with external threads matched with the internal threads of the inner wall of the first sleeve; the end inner chamber of lower pile body is equipped with the second sleeve, is equipped with in the second sleeve: a second longitudinal bar and a clip anchor; the head of the second longitudinal steel bar extends into the second sleeve to be clamped, and the tail extends out of the second sleeve to extend into the lower pile body. The precast concrete pile and the connecting device are simple, visual and clear in operation and high in reliability.

Description

Connecting device of precast concrete pile

Technical Field

The utility model belongs to the technical field of precast concrete piles, and particularly relates to a connecting device of precast concrete piles.

Background

Precast concrete pile is one of the concrete foundation components with wider application, is mainly used for pile foundation engineering to improve the bearing capacity of the foundation and the foundation, and transfers the building load on the upper part to the soil layer with stronger bearing capacity. For concrete precast piles, most of the lengths of single piles cannot meet the use requirements. Therefore, the prefabricated pile is connected with other prefabricated piles according to the length of the designed pile after being prefabricated and formed in a factory and then transported to site construction, so that the whole body meeting the design length requirement is formed.

The precast concrete pile joint in the prior art is mostly welded and connected by end steel end plates, the welding and connecting process of the steel end plates is easily affected by manpower and environment in engineering practice, the welding quality is not effectively ensured, the construction efficiency is low, and a steel structure and welding seams are exposed to the outside and easily eroded by the environment. Some technicians have developed mechanical connection structures, but not exclusively single snap-fit structures, the reliability of which is susceptible to construction artifacts. Therefore, development of a novel connection structure of the precast concrete pile is urgently needed to solve the problems that the quality of the joint of the existing precast concrete pile is difficult to guarantee, and the existing precast concrete pile is easy to corrode and the like.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a convenient, reliable and corrosion-resistant connecting device for the precast concrete piles.

The utility model is realized in the following way:

a connection device of precast concrete piles, comprising: an upper pile body and a lower pile body to be connected;

the tip inner chamber of upper pile body is equipped with first sleeve, be equipped with in the first sleeve: a first longitudinal bar and a connecting member; the head part of the first longitudinal steel bar extends into the first sleeve to be clamped, and the tail part extends out of the first sleeve to extend into the upper pile body; the head part of the connecting piece is stepped, and the tail part of the connecting piece is provided with external threads matched with the internal threads of the inner wall of the first sleeve;

the tip inner chamber of lower pile body is equipped with the second sleeve, be equipped with in the second sleeve: a second longitudinal bar and a clip anchor; the head part of the second longitudinal steel bar extends into the second sleeve to be clamped, and the tail part extends out of the second sleeve to extend into the lower pile body; the clip anchor includes: stop cup ring, anchor clip and jack spring; the jacking spring is arranged at the center of the second sleeve, and the stop cup ring is sleeved on the head of the anchor clamping piece; the stop cup ring is provided with external threads matched with the internal threads of the inner wall of the second sleeve;

when the upper pile body is connected with the lower pile body, slurry is filled in the second sleeve, and the head of the connecting piece of the upper pile body is aligned with the second sleeve of the lower pile body and the two piles are tightly attached; the head of the connecting piece enters the middle of the jacking spring, the stop cup ring is clamped into the periphery of the anchor clamping piece, and the slurry is solidified to adhere the connecting piece and the second sleeve.

Further, the middle part of the stop cup ring is a taper hole with a small upper part and a large lower part; the anchor clamping pieces are conical arc pieces, the taper of the outer conical surface of each anchor clamping piece is matched with a taper hole in the stop cup ring, the inner wall of each anchor clamping piece is an arc with transverse threads, the arc diameter of each arc is matched with the diameter of the connecting piece, and the number of the anchor clamping pieces is two or more.

Further, the inner hole in the middle of the stop cup ring is a taper hole with a taper of 0.15-0.25 mm and a small upper part and a large lower part.

Further, a gasket is arranged at the bottom of the stop cup ring.

The utility model has the advantages that:

1. the precast concrete pile and the connecting device are simple, visual and clear in operation and high in reliability, workers can be qualified by training through a simple construction method, and the operation of a professional is not required to be ensured like a welded joint. Time and steel are saved, and the operation is not influenced by environmental factors such as wind and rain; in particular, the whole pile is free from steel exposing on the surface of the concrete, so that corrosion of corrosive medium to the joint is avoided, the corrosion resistance of the pile is ensured, and the corrosion resistance durability of the precast pile foundation is improved.

2. The double insurance of the joint connection quality is realized by combining the anchor clamping connection technology and the slurry barrel anchor connection technology.

Drawings

The utility model will be further described with reference to the accompanying drawings, in conjunction with examples.

Fig. 1 is a schematic diagram of an explosive structure of the present utility model.

Fig. 2 is a schematic structural view of the present utility model after assembly.

Reference numerals:

the device comprises a first sleeve, a first longitudinal steel bar, a 3-connecting piece, a 31-connecting piece head, a 32-connecting piece tail, a 4-second sleeve, a 5-second longitudinal steel bar, a 6-clamping anchor retaining piece, a 61-stop ring cup, a 62-clamping anchor piece, a 63-jacking spring and a 7-gasket.

Detailed Description

As shown in fig. 1 and 2, a coupling device of precast concrete piles, comprising: an upper pile body and a lower pile body to be connected;

the tip inner chamber of upper pile body is equipped with first sleeve 1, be equipped with in the first sleeve 1: a first longitudinal bar 2 and a connector 3; the head part of the first longitudinal steel bar 2 extends into the first sleeve 1 to be clamped, and the tail part extends out of the first sleeve 1 to extend into the upper pile body; the head 31 of the connecting piece 3 is in a ladder shape, and the tail 32 is provided with external threads matched with the internal threads of the inner wall of the first sleeve 1;

the tip inner chamber of lower pile body is equipped with second sleeve 4, be equipped with in the second sleeve 4: a second longitudinal bar 5 and a clip anchor 6; the head part of the second longitudinal steel bar 5 extends into the second sleeve 4 to be clamped, and the tail part extends out of the second sleeve 4 to extend into the lower pile body; the click-stop 6 includes: stop cup ring 61, anchor clip 62, jack spring 63; the jacking spring 63 is arranged at the center of the inside of the second sleeve 4, and the stop cup ring 61 is sleeved on the head of the anchor clamping piece 62; the stop cup ring 61 is provided with external threads which are matched with the internal threads of the inner wall of the second sleeve 4;

when the upper pile body is connected with the lower pile body, the second sleeve 4 is filled with slurry, and the head 31 of the connecting piece 3 of the upper pile body is aligned with the second sleeve 4 of the lower pile body and the two piles are tightly attached; the head 31 of the connecting piece 3 enters the middle of the jacking spring 63, and the stop cup ring 61 is clamped into the periphery of the anchor clamping piece 62.

The middle part of the stop cup ring 61 is a taper hole with a small upper part and a large lower part; the anchor clamping pieces 62 are conical arc pieces, the taper of the outer conical surface of each anchor clamping piece is matched with the taper hole in the stop cup ring 61, the inner wall of each anchor clamping piece is an arc with transverse threads, the arc diameter of each arc is matched with the diameter of the connecting piece 3, and the number of the anchor clamping pieces 62 is two or more. The inner hole in the middle of the stop cup ring 61 is a taper hole with a taper of 0.15-0.25 mm and a small upper part and a large lower part. The bottom of the stop cup ring 61 is provided with a washer 7.

The precast concrete pile and the connecting device are simple, visual and clear in operation and high in reliability, workers can be qualified by training through a simple construction method, and the operation of a professional is not required to be ensured like a welded joint. Time and steel are saved, and the operation is not influenced by environmental factors such as wind and rain; in particular, the whole pile is free from steel exposing on the surface of the concrete, so that corrosion of corrosive medium to the joint is avoided, the corrosion resistance of the pile is ensured, and the corrosion resistance durability of the precast pile foundation is improved. The double insurance of the joint connection quality is realized by combining the anchor clamping connection technology and the slurry barrel anchor connection technology.

The above examples and drawings are not intended to limit the form or form of the present utility model, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.

Claims

1. The utility model provides a connecting device of precast concrete stake which characterized in that: comprising the following steps: an upper pile body and a lower pile body to be connected;

2. A precast concrete pile connecting apparatus as claimed in claim 1, wherein:

the middle part of the stop cup ring is a taper hole with a small upper part and a large lower part; the anchor clamping pieces are conical arc pieces, the taper of the outer conical surface of each anchor clamping piece is matched with a taper hole in the stop cup ring, the inner wall of each anchor clamping piece is an arc with transverse threads, the arc diameter of each arc is matched with the diameter of the connecting piece, and the number of the anchor clamping pieces is two or more.

3. A precast concrete pile connecting apparatus as claimed in claim 2, wherein: the inner hole in the middle of the stop cup ring is a taper hole with the taper of 0.15-0.25 mm and the upper part is small and the lower part is large.

4. A precast concrete pile connecting apparatus as claimed in claim 1, wherein: and a gasket is arranged at the bottom of the stop cup ring.