Pipe expansion connecting piece

Abstract

The invention discloses a pipe expansion connecting piece, which belongs to the technical field of pipe connection, and comprises an expansion piece which comprises a driving part, an expansion deformation part and a fixing part which are connected in sequence; the driving part is matched with the expansion part; when the connecting device is used for connecting two pipes, the driving part is located in one pipe of the two pipes, and the fixing part is located at the end, away from the connecting end, of the other pipe of the two pipes. The driving part drives the driving part to move towards the fixing part so as to drive the expansion deformation part to conduct expansion deformation to be clamped in the pipe where the driving part is located, and connection of the two pipes is achieved. The device is of an integrated structure, the falling-off phenomenon in the installation process is avoided, operation is easy and convenient, and the working efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe connection, and in particular relates to a pipe expansion connector. Background Art

[0002] In pipe connection products, pipes usually need to be connected.

[0003] In the prior art, there are many kinds of connecting accessories between pipes. The more common one is to connect the pipes by matching the expansion rod and the expansion nut. During use, the expansion nut and the expansion rod often fall off, especially when the pipe is long. The operator is required to reinstall the expansion nut and the expansion rod, and the operation is extremely inconvenient. Summary of the invention

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A pipe expansion connector, comprising:

[0006] An expansion member, the expansion member comprising a driving portion, an expansion deformation portion and a fixing portion connected in sequence;

[0007] a driving member, the driving member cooperates with the expansion member;

[0008] Among them, when used for connecting two pipes, the driving part is located in one of the two pipes, and the fixing part is located at an end of the other pipe away from the connecting end; the driving member drives the driving part to move toward the fixing part, so as to drive the expansion and deformation part to expand and deform and be stuck in the pipe where the driving part is located, so as to realize the connection of the two pipes.

[0009] Furthermore, the expansion member includes a column with a hollow structure, a driving plate and a fixed plate arranged at both ends of the column, and the column, the driving plate and the fixed plate are arranged as an integrated structure; a plurality of openings are evenly arranged circumferentially on the column; when used for connecting two pipes, the driving member drives the driving plate to move toward the fixed plate to drive the column wall of the column to deform and be stuck in the pipe.

[0010] Furthermore, the column is a prism, a cylinder or a geometric column.

[0011] Furthermore, the driving member is a bolt, the fixing plate is provided with a through hole for the screw rod of the bolt to pass through, and the driving plate is provided with a threaded hole that cooperates with the screw rod of the bolt.

[0012] Furthermore, the outer contour of the fixing plate is larger than the outer contour of the pipe.

[0013] Further, the opening of the column extends axially to the driving plate and the fixing plate.

[0014] Furthermore, a deformation groove is preset on the column wall of the column.

[0015] Furthermore, a first deformation groove is provided at a connection between the column and the driving plate, a second deformation groove is provided at a connection between the column and the fixing plate; and a third deformation groove is provided at a middle position of the column.

[0016] Furthermore, the first deformation groove and the second deformation groove are located on the outer side of the column, and the third deformation groove is located on the inner side of the column.

[0017] Beneficial effects:

[0018] The pipe expansion connector provided by the present invention is an integrated structure, which avoids the phenomenon of falling off during the installation process, is simple and convenient to operate, and has high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the pipe expansion connector of the present invention;

[0020] Figure 2 Another perspective view of the pipe expansion connector of the present invention;

[0021] Figure 3 It is a front view of the pipe expansion connector of the present invention;

[0022] Figure 4 for Figure 3 Middle AA section view;

[0023] Among them, 1. driving member; 2. fixing plate; 3. column; 4. first deformation groove; 5. driving plate; 6. opening; 7. third deformation groove; 8. second deformation groove. DETAILED DESCRIPTION

[0024] Example 1

[0025] refer to Figure 1 - Figure 4 , a pipe expansion connector, comprising:

[0026] An expansion member, the expansion member comprising a driving portion, an expansion deformation portion and a fixing portion connected in sequence;

[0027] A driving member 1 cooperates with the expansion member;

[0028] When used for connecting two pipes, the driving part is located in one of the two pipes, and the fixing part is located at the end of the other pipe away from the connection end; the driving member 1 drives the driving part to move toward the fixing part, so as to drive the expansion and deformation part to expand and deform and be clamped in the pipe where the driving part is located, so as to realize the connection of the two pipes.

[0029] In this embodiment, the expansion member includes a column 3 with a hollow structure, a driving plate 5 and a fixed plate 2 arranged at both ends of the column, and the column 3, the driving plate 5 and the fixed plate 2 are arranged as an integrated structure; a plurality of openings 6 are evenly arranged circumferentially on the column 3; when used for connecting two pipes, the driving member 1 drives the driving plate 5 to move toward the fixed plate 2, so as to drive the column wall of the column 3 to deform and be stuck in the pipe.

[0030] Specifically, the column 3 is a prism, a cylinder or a geometric column, preferably a polygonal prism.

[0031] Furthermore, the column 3 is a hexagonal column, and three openings 6 are arranged on the column 3. Meanwhile, the driving plate 5 and the fixing plate 2 are also arranged as a hexagonal structure.

[0032] In this embodiment, the driving member 1 is a bolt, the fixing plate 2 is provided with a through hole for the screw rod of the bolt to pass through, and the driving plate 5 is provided with a threaded hole matched with the screw rod of the bolt.

[0033] In this embodiment, the outer contour of the fixing plate 2 is larger than the outer contour of the pipe.

[0034] In this embodiment, the opening 6 of the column 3 axially extends to the driving plate 5 and the fixing plate 2 .

[0035] In this embodiment, a deformation groove is preset on the column wall of the column 3 .

[0036] Specifically, a first deformation groove 4 is provided at the connection between the column 3 and the driving plate 5 , a second deformation groove 8 is provided at the connection between the column 3 and the fixing plate 2 ; and a third deformation groove 7 is provided at the middle position of the column 3 .

[0037] Among them, the first deformation groove 4 and the second deformation groove 8 are located on the outside of the column, and the third deformation groove 7 is located on the inside of the column; the first deformation groove 4 and the second deformation groove 8 are preferably single-sided 45-degree grooves, and the third deformation groove 7 is preferably a symmetrically arranged 90-degree triangular groove, and the groove depth is 1 / 4-1 / 2 of the column wall, preferably 1 / 3.

[0038] When in use, a tool is used to rotate the bolt. Since the screw rod of the bolt is threadedly matched with the threaded hole of the driving plate 5, the driving plate 5 is driven to approach the fixed plate 2, and then the column 3 is driven to expand and deform axially at the first deformation groove 4, the second deformation groove 8 and the third deformation groove 7 to achieve the connection between the two pipes.

[0039] According to actual usage, the driving member 1 can also be a rope, such as a steel wire rope, one end of which is connected to the fixed plate 2, and the other end extends to the outside of the pipe, and is connected to a driving device such as a hydraulic cylinder, a pneumatic cylinder, etc. After the driving plate 5 moves to a preset position and the column wall of the column 3 expands and deforms, the steel wire rope is fixed to the fixed plate 2.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A pipe expansion connector, characterized in that: include: An expansion member, the expansion member comprising a driving portion, an expansion deformation portion and a fixing portion connected in sequence; a driving member, the driving member cooperates with the expansion member; Among them, when used for connecting two pipes, the driving part is located in one of the two pipes, and the fixing part is located at an end of the other pipe away from the connecting end; the driving member drives the driving part to move toward the fixing part, so as to drive the expansion and deformation part to expand and deform and be stuck in the pipe where the driving part is located, so as to realize the connection of the two pipes.

2. The pipe expansion connector according to claim 1, characterized in that: The expansion member comprises a column with a hollow structure, a driving plate and a fixing plate arranged at both ends of the column, wherein the column, the driving plate and the fixing plate are arranged as an integrated structure; a plurality of openings are evenly arranged on the circumference of the column; When used for connecting two pipes, the driving member drives the driving plate to move toward the fixing plate, so as to cause the column wall of the column to deform and be clamped in the pipe.

3. The pipe expansion connector according to claim 2, characterized in that: The column is a prism, a cylinder or a geometric column.

4. The pipe expansion connector according to claim 2, characterized in that: The driving member is a bolt, the fixing plate is provided with a through hole for the screw rod of the bolt to pass through, and the driving plate is provided with a threaded hole matched with the screw rod of the bolt.

5. The pipe expansion connector according to claim 2, characterized in that: The outer contour of the fixing plate is larger than the outer contour of the pipe.

6. The pipe expansion connector according to claim 2, characterized in that: The opening of the column extends axially to the driving plate and the fixing plate.

7. The tubular expansion joint according to claim 6, characterized in that: A deformation groove is preset on the column wall of the column.

8. The pipe expansion connector according to claim 7, characterized in that: A first deformation groove is provided at the connection between the column and the driving plate, a second deformation groove is provided at the connection between the column and the fixing plate; and a third deformation groove is provided at the middle position of the column.

9. The tubular expansion connector according to claim 8, characterized in that: The first deformation groove and the second deformation groove are located on the outer side of the column, and the third deformation groove is located on the inner side of the column.

Images