CN219510360U

CN219510360U - Pipe fitting connection structure

Info

Publication number: CN219510360U
Application number: CN202320497691.5U
Authority: CN
Inventors: 何武; 何海国; 柴文胜; 赵月; 郑丽娟
Original assignee: China Railway 12th Bureau Group International Engineering Co Ltd
Current assignee: China Railway 12th Bureau Group International Engineering Co Ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-08-11
Anticipated expiration: 2033-03-15

Abstract

The utility model belongs to the technical field of pipe-to-pipe connection, and particularly relates to a pipe fitting connection structure; the locking device comprises an outer sleeve, an inner insertion tube and a locking cutting, wherein a locking cavity along the circumferential direction of the tube is arranged in an insertion area of the outer sleeve and the inner insertion tube, the locking cavity is formed by buckling a groove on the outer sleeve and a groove on the inner insertion tube, a window communicated with the locking cavity is formed in the outer sleeve, and the locking cutting enters the locking cavity from the window; the pipe and the pipe joint are small in size, the pipe is firmly and reliably connected with the pipe, the outer sleeve, the inner insertion pipe and the locking cutting are in a mechanical locking mode, and the direction of the force required by pulling out the locking cutting is perpendicular to the direction of the force required by breaking the outer sleeve and the inner insertion pipe, so that the outer sleeve and the inner insertion pipe cannot be loosened and accidentally separated under the condition of not manually pulling out the locking cutting; the assembly and disassembly are convenient, no special tool is needed in the installation process, and the locking cutting is inserted after the outer sleeve and the inner sleeve are manually inserted; the splitting process is to use a pair of nipper pliers to pull out the locking cutting.

Description

Pipe fitting connection structure

Technical Field

The utility model belongs to the technical field of pipe-to-pipe connection, and particularly relates to a pipe fitting connection structure.

Background

When the bored pile uses the pipe to pour the concrete filling pile, the pipe generally adopts threaded connection, and because the pipeline sections and the connecting joints are more, the pipe adopts threaded connection to be time-consuming and easy to damage. And other connection modes are inconvenient to detach or have larger connector size, so that the method is not suitable for site construction.

Disclosure of Invention

The utility model aims to provide a firm and reliable pipe-pipe connecting structure with small joint size and convenient disassembly and assembly.

The utility model adopts the following technical scheme: the utility model provides a pipe fitting connection structure, includes outer tube, interior intubate and locking cutting, is equipped with the locking cavity along pipe circumference at the grafting region of outer tube and interior intubate, and the locking cavity comprises the recess on the outer tube and the recess on the interior intubate is buckled, opens the window that has the intercommunication locking cavity on the outer tube, and the locking cutting gets into the locking cavity from the window.

Further, the head part of the locking cutting is a pointed head, and the tail part of the locking cutting is connected with the pull head.

Further, a circumferential shoulder is arranged in the outer sleeve, and a sealing ring is arranged between the inner sleeve and the shoulder for sealing.

Further, the shoulder of the outer sleeve is provided with a ring groove, and the sealing ring is embedded in the ring groove.

Further, the locking cavity is provided for one revolution in the circumferential direction of the tube.

Further, the cross section of the locking cavity is circular, and the locking cavity is positioned at the outer sleeve in a 1/2 mode, and is positioned at the inner cannula in a 1/2 mode.

Further, the locking inserts are flexible steel wires

Compared with the prior art, the utility model has the advantages that:

according to the pipe fitting connecting structure, the pipe and the pipe joint are small in size, the pipe is firmly and reliably connected with the pipe, the outer sleeve, the inner insertion pipe and the locking cutting are in a mechanical locking mode, and the direction of the force required by pulling out the locking cutting is perpendicular to the direction of the force required by breaking the outer sleeve and the inner insertion pipe, so that the outer sleeve and the inner insertion pipe cannot be loosened and accidentally separated under the condition that the locking cutting is pulled out by no person; the assembly and disassembly are convenient, no special tool is needed in the installation process, and the locking cutting is inserted after the outer sleeve and the inner sleeve are manually inserted; the splitting process is to use a pair of nipper pliers to pull out the locking cutting.

Drawings

Fig. 1 is a split view of the components.

Fig. 2 is an assembled cross-sectional view of the components.

In the figure: 1-an inner cannula; 2-locking the slip; 2.1-a pull head; 3-a sealing ring; 4-an outer sleeve; 4.1-window.

Detailed Description

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

As shown in fig. 1 and 2: the utility model provides a pipe fitting connection structure, includes outer tube 4, interior intubate 1 and locking cutting 2, is equipped with the locking cavity along pipe circumference at the grafting region of outer tube 4 and interior intubate 1, and the locking cavity comprises the recess on the outer tube 4 and the recess on the interior intubate 1, and open on the outer tube 4 has the window 4.1 of intercommunication locking cavity, and locking cutting 2 gets into the locking cavity from window 4.1.

The head of the locking cutting 2 is a pointed end, so that the locking cutting is beneficial to penetrating into a locking cavity, and the tail is connected with the pull head 2.1, so that the locking cutting is convenient to pull out during disassembly.

The locking cutting 2 is a flexible steel wire, and the positioning and fixing of the pipeline joint are completed by utilizing the shearing resistance of the steel wire.

The joint is provided with a sealing ring to seal the pipeline joint, a circumferential shoulder is arranged in the outer sleeve 4, and a sealing ring 3 is arranged between the inner sleeve 1 and the shoulder for sealing. The shoulder of the outer sleeve 4 is provided with a ring groove, and the sealing ring 3 is embedded in the ring groove.

The locking cavity is provided for one revolution along the circumference of the tube. The section of the locking cavity is circular, and the locking cavity 1/2 is positioned on the outer sleeve 4 and the locking cavity 1/2 is positioned on the inner cannula 1; the wall thickness of the insertion part of the outer sleeve 4 and the inner sleeve 1 is increased.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipe fitting connection structure, its characterized in that: including outer tube (4), interior plug tube (1) and locking cutting (2), be equipped with along the locking cavity of pipe circumference at the grafting region of outer tube (4) and interior plug tube (1), the locking cavity comprises recess on outer tube (4) and the recess on interior plug tube (1) are buckled, open on outer tube (4) has window (4.1) that communicate the locking cavity, in locking cutting (2) get into the locking cavity from window (4.1).

2. A pipe fitting connection according to claim 1, wherein: the head part of the locking cutting (2) is a pointed head and the tail part of the locking cutting is connected with the pull head (2.1).

3. A pipe fitting connection according to claim 2, wherein: the outer sleeve (4) is internally provided with a circumferential shoulder, and a sealing ring (3) is arranged between the inner sleeve (1) and the shoulder for sealing.

4. A pipe fitting connection according to claim 3, wherein: the shoulder part of the outer sleeve (4) is provided with an annular groove, and the sealing ring (3) is embedded in the annular groove.

5. A pipe fitting connection according to claim 4, wherein: the locking cavity is arranged along the circumference of the pipe for a circle.

6. A pipe fitting connection according to claim 5, wherein: the cross section of the locking cavity is circular, and the locking cavity 1/2 is positioned on the outer sleeve (4) and the locking cavity 1/2 is positioned on the inner cannula (1).

7. A pipe fitting connection according to claim 6, wherein: the locking cutting (2) is a flexible steel wire.