CN215568677U

CN215568677U - Hidden connection structure of steel pipe fitting

Info

Publication number: CN215568677U
Application number: CN202121451887.8U
Authority: CN
Inventors: 刘鹏辉
Original assignee: Guangdong Port Zhong Lv Jian Technology Co ltd
Current assignee: Guangdong Port Zhong Lv Jian Technology Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-01-18
Anticipated expiration: 2031-06-28

Abstract

The utility model provides a hidden connection structure of a steel pipe, wherein a connection piece is connected between a first steel pipe main body and a second steel pipe main body, the first steel pipe main body is provided with a first limiting hole, and the second steel pipe main body is provided with a second limiting hole; the connecting piece comprises an outer convex sleeve, a first inner connecting sleeve and a second inner connecting sleeve, the first inner connecting sleeve is provided with a first through hole, the second inner connecting sleeve is provided with a second through hole, the first inner connecting sleeve is positioned in one end of the first steel pipe main body, the second inner connecting sleeve is positioned in one end of the second steel pipe main body, the surface of the first inner connecting sleeve is covered with a first hot melt adhesive layer, and the surface of the second inner connecting sleeve is covered with a second hot melt adhesive layer; first screws and first nuts are arranged in the two first limiting holes respectively, and second screws and second nuts are arranged in the two second limiting holes respectively. The connecting operation of the utility model does not need to be equipped with a complex positioning mechanism, the heat generated in the welding process can melt the hot melt adhesive layer and seal the steel pipe main body and the connecting piece, and the surface of the connecting piece has no convex structure.

Description

Hidden connection structure of steel pipe fitting

Technical Field

The utility model relates to a steel pipe fitting, and particularly discloses a hidden connection structure of the steel pipe fitting.

Background

The steel pipe fitting is a general name of parts with functions of connection, control, turning, diversion, sealing, supporting and the like in a pipeline system, and in the field of construction, the steel pipe fitting is also commonly used as a building framework to construct a corresponding engineering building.

In a building site, because of the limitation of transportation, the length of steel materials used in practical application is often longer than that of transportable steel materials, therefore, after the steel materials are transported to the building site, the steel materials need to be welded and connected to obtain the required length.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a hidden connection structure of a steel pipe fitting, which can form a stable and firm connection effect and has no surface protrusion structure, in order to solve the problems in the prior art.

In order to solve the prior art problem, the utility model discloses a hidden connection structure of a steel pipe fitting, which comprises a first steel pipe main body and a second steel pipe main body which are coaxial, wherein a connection piece is connected between the first steel pipe main body and the second steel pipe main body, two opposite surfaces of the first steel pipe main body are respectively provided with a first limiting hole, and two opposite surfaces of the second steel pipe main body are respectively provided with a second limiting hole;

the connecting piece comprises an outer convex sleeve, a first inner connecting sleeve and a second inner connecting sleeve, the first inner connecting sleeve and the second inner connecting sleeve are respectively fixed at two opposite ends of the outer convex sleeve, the outer convex sleeve is positioned between a first steel pipe main body and a second steel pipe main body, the outer diameter of the outer convex sleeve, the outer diameter of the first steel pipe main body and the outer diameter of the second steel pipe main body are equal, two opposite sides of the first inner connecting sleeve are respectively provided with a first through hole, two opposite sides of the second inner connecting sleeve are respectively provided with a second through hole, the first inner connecting sleeve is positioned in one end of the first steel pipe main body, the second inner connecting sleeve is positioned in one end of the second steel pipe main body, the surface of the first inner connecting sleeve is covered with a first hot melt adhesive layer penetrated by the first through holes, and the surface of the second inner connecting sleeve is covered with a second hot melt adhesive layer penetrated by the second through holes;

the two first limiting holes are respectively provided with a first screw and a first nut, the first screw penetrates through the two first through holes to be in threaded connection with the first nut, the two second limiting holes are respectively provided with a second screw and a second nut, and the second screw penetrates through the two second through holes to be in threaded connection with the second nut.

Furthermore, a first reinforcing ring is fixed in the first steel pipe body, and a second reinforcing ring is fixed in the second steel pipe body.

Furthermore, the first limiting holes and the first nuts are both non-circular, the first nut is limited in one of the first limiting holes, and the first screw is internally tangent in the other first limiting hole; the second limiting holes and the second nuts are non-circular, the second nuts are limited in one of the second limiting holes, and the second screws are internally tangent in the other second limiting hole.

Furthermore, the opposite sides of the convex sleeve are provided with alignment marks, and the first through hole and the second through hole are arranged at the opposite ends of the alignment marks.

Furthermore, the first through hole and the second through hole are both screw holes.

The utility model has the beneficial effects that: the utility model discloses a hidden connection structure of a steel pipe fitting, which is provided with a special connection piece connected between two steel pipe main bodies, does not need to be provided with a complex positioning mechanism in connection operation, can form a stable coaxial connection effect by embedding screws and nuts at corresponding positions, and simultaneously provides a good foundation for subsequent welding processing.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the connection member of the present invention.

The reference signs are: the structure comprises a first steel pipe main body 10, a first limiting hole 11, a first reinforcing ring 12, a second steel pipe main body 20, a second limiting hole 21, a second reinforcing ring 22, a connecting piece 30, an outer convex sleeve 31, an alignment mark 311, a first inner connecting sleeve 32, a first through hole 321, a first hot melt adhesive layer 322, a second inner connecting sleeve 33, a second through hole 331, a second hot melt adhesive layer 332, a first screw 41, a first nut 42, a second screw 51 and a second nut 52.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 and 2.

The embodiment of the utility model discloses a hidden connection structure of a steel pipe fitting, which comprises a first steel pipe main body 10 and a second steel pipe main body 20 which are coaxial, wherein a connection piece 30 is connected between the first steel pipe main body 10 and the second steel pipe main body 20, the connection piece 30 is collinear with the axes of the first steel pipe main body 10 and the second steel pipe main body 20, the connection piece 30 is also a steel structural member, two opposite surfaces of the first steel pipe main body 10 are respectively provided with a first limiting hole 11, and two opposite surfaces of the second steel pipe main body 20 are respectively provided with a second limiting hole 21;

the connecting piece 30 comprises an integrally formed outer convex sleeve 31, a first inner connecting sleeve 32 and a second inner connecting sleeve 33, the first inner connecting sleeve 32 and the second inner connecting sleeve 33 are respectively fixed at two opposite ends of the outer convex sleeve 31, the outer convex sleeve 31 is positioned between the first steel pipe main body 10 and the second steel pipe main body 20, the first steel pipe main body 10, the second steel pipe main body 20, the outer convex sleeve 31, the first inner connecting sleeve 32 and the second inner connecting sleeve 33 are all round pipe fittings, the outer diameter of the outer convex sleeve 31, the outer diameter of the first steel pipe main body 10 and the outer diameter of the second steel pipe main body 20 are equal, a smooth connection effect without concave-convex surfaces can be formed, two opposite sides of the first inner connecting sleeve 32 are respectively provided with a first through hole 321, two opposite sides of the second inner connecting sleeve 33 are respectively provided with a second through hole 331, the first inner connecting sleeve 32 is positioned in one end of the first steel pipe main body 10, the two first through holes 321 are respectively connected with two first limiting holes 11, and the second inner connecting sleeve 33 is positioned in one end of the second steel pipe main body 20, the two second through holes 331 are respectively connected with the two second limiting holes 21, the surface of the first inner connecting sleeve 32 is covered with a first hot melt adhesive layer 322 which is penetrated through by the first through holes 321, the first hot melt adhesive layer 322 is tightly attached between the first steel pipe main body 10 and the first inner connecting sleeve 32, preferably, the outer diameter of the first hot melt adhesive layer 322 is equal to the inner diameter of the first steel pipe main body 10, the surface of the second inner connecting sleeve 33 is covered with a second hot melt adhesive layer 332 which is penetrated through by the second through holes 331, the second hot melt adhesive layer 332 is tightly attached between the second steel pipe main body 20 and the second inner connecting sleeve 33, and preferably, the outer diameter of the second hot melt adhesive layer 332 is equal to the inner diameter of the second steel pipe main body 20;

the two first limiting holes 11 are respectively provided with a first screw 41 and a first nut 42 which are made of steel, the first screw 41 penetrates through the two first through holes 321 and then is in threaded connection with the first nut 42, the opening area of the first limiting hole 11 is larger than that of the first through hole 321, a limiting structure in a T-shaped hole can be formed, the head of the first screw 41 and the first nut 42 can be effectively limited, the reliability of the connection structure between the first steel pipe body 10 and the first inner sleeve can be effectively ensured, the two second limiting holes 21 are respectively provided with a second screw 51 and a second nut 52 which are made of steel, the second screw 51 penetrates through the two second through holes 331 and then is in threaded connection with the second nut 52, the opening area of the second limiting hole 21 is larger than that of the second through holes 331, the limiting structure in the T-shaped hole can be formed, and the head of the second screw 51 and the second nut 52 can be effectively limited, the reliability of the connection structure between the second steel pipe main body 20 and the second nipple 33 can be effectively ensured.

When the utility model is applied, the first steel pipe main body 10 and the second steel pipe main body 20 are respectively sleeved outside two ends of the connection piece 30, the outer convex sleeve 31 can effectively limit the position between the two steel pipe main bodies, then two groups of screws and nuts are arranged in corresponding limiting holes, the first steel pipe main body 10, the second steel pipe main body 20 and the connection piece 30 can be reliably positioned, in order to improve the firmness of connection, after the connection and the positioning are carried out according to the above mode, the screws, the nuts and the steel pipe main bodies around the screws, the nuts and the steel pipe main bodies can be welded, the steel pipe main bodies and the outer convex sleeve 31 can be welded, the firmness of the whole connection structure can be further improved, no matter which type of welding action, the heat generated in the welding process can be transmitted to the first hot melt adhesive layer 322 and the second hot melt adhesive layer 332, so that the first steel pipe main body and the second hot melt to bond the corresponding steel pipe main body and the inner connecting sleeve, can effectively improve two steel pipe main parts and the sealed effect of connection structure between the piece of plugging into 30, can satisfy the sealed user demand of different scenes, the structure surface of plugging into that finally obtains does not have obvious concave-convex structure, can satisfy the user demand of level and smooth environment, and the position of plugging into has higher mechanical strength.

In the present embodiment, the first steel pipe body 10 has the plurality of first reinforcing rings 12 fixed therein, and the mechanical strength of the first steel pipe body 10 can be effectively improved by the first reinforcing rings 12, and the second steel pipe body 20 has the plurality of second reinforcing rings 22 fixed therein, and the mechanical strength of the second steel pipe body 20 can be effectively improved by the second reinforcing rings 22.

In this embodiment, the shape of the opening of the first position-limiting hole 11 and the shape of the outer contour of the first nut 42 are both non-circular, and for example, both shapes are regular hexagon, pentagon, and the like, which can effectively limit the position of the first nut 42, the first nut 42 is positioned in one of the first position-limiting holes 11, the shape and size of the first nut 42 is the same as the shape and size of the second nut 52, and the circular head of the first screw 41 is inscribed in the other first position-limiting hole 11, which can facilitate the completion of the connection operation; the shape of the opening of the second limiting hole 21 and the shape of the outer contour of the second nut 52 are both non-circular, for example, both shapes are regular hexagon and pentagon, which can effectively limit the position of the second nut 52, the second nut 52 is limited in one of the second limiting holes 21, the shape and size of the second nut 52 is the same as the shape and size of the second nut 52, and the circular head of the second screw 51 is internally tangent to the other second limiting hole 21, which can facilitate the completion of the connection operation.

In this embodiment, the opposite side surfaces of the outer convex sleeve 31 are provided with the alignment mark 311, the first through hole 321 and the second through hole 331 on the same side are located at opposite ends of the alignment mark 311, preferably, the alignment mark 311 may be an indication pattern structure such as a double-arrow or a straight line formed by laser engraving, and the alignment mark 311 can provide an alignment reference for assembling the steel pipe main body and the connection member 30, so that the operation steps of alignment assembly can be simplified, and the assembly and connection efficiency is high.

In this embodiment, the first through hole 321 and the second through hole 331 are both screw holes, and the firmness of the finally obtained connection structure can be further improved by the screw holes.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The hidden connection structure of the steel pipe fitting is characterized by comprising a first steel pipe main body (10) and a second steel pipe main body (20) which are coaxial, wherein a connection piece (30) is connected between the first steel pipe main body (10) and the second steel pipe main body (20), two opposite surfaces of the first steel pipe main body (10) are provided with first limiting holes (11), and two opposite surfaces of the second steel pipe main body (20) are provided with second limiting holes (21);

the connecting piece (30) comprises an outer convex sleeve (31), a first inner connecting sleeve (32) and a second inner connecting sleeve (33), the first inner connecting sleeve (32) and the second inner connecting sleeve (33) are respectively fixed at two opposite ends of the outer convex sleeve (31), the outer convex sleeve (31) is positioned between the first steel pipe main body (10) and the second steel pipe main body (20), the outer diameter of the outer convex sleeve (31), the outer diameter of the first steel pipe main body (10) and the outer diameter of the second steel pipe main body (20) are equal, two opposite sides of the first inner connecting sleeve (32) are respectively provided with a first through hole (321), two opposite sides of the second inner connecting sleeve (33) are respectively provided with a second through hole (331), the first inner connecting sleeve (32) is positioned in one end of the first steel pipe main body (10), and the second inner connecting sleeve (33) is positioned in one end of the second steel pipe main body (20), the surface of the first inner connecting sleeve (32) is covered with a first hot melt adhesive layer (322) penetrated by the first through hole (321), and the surface of the second inner connecting sleeve (33) is covered with a second hot melt adhesive layer (332) penetrated by the second through hole (331);

two be equipped with first screw (41) and first nut (42) respectively in first spacing hole (11), first screw (41) pass two first through-hole (321) with first nut (42) threaded connection, two be equipped with second screw (51) and second nut (52) respectively in spacing hole of second (21), second screw (51) pass two second through-hole (331) with second nut (52) threaded connection.

2. The hidden connection structure of steel pipe fittings according to claim 1, wherein a first reinforcement ring (12) is fixed in the first steel pipe body (10), and a second reinforcement ring (22) is fixed in the second steel pipe body (20).

3. The hidden connection structure of steel pipe fittings according to claim 1, wherein the first limiting holes (11) and the first nuts (42) are non-circular, the first nuts (42) are limited in one of the first limiting holes (11), and the first screws (41) are internally cut in the other first limiting hole (11); the second limiting holes (21) and the second nuts (52) are both non-circular, the second nuts (52) are limited in one of the second limiting holes (21), and the second screws (51) are internally tangent in the other second limiting hole (21).

4. The hidden connection structure of steel pipe fittings according to claim 1, wherein the two opposite sides of the outer convex sleeve (31) are provided with alignment marks (311), and the first through hole (321) and the second through hole (331) are located at two opposite ends of the alignment marks (311).

5. The hidden connection structure of steel pipe fittings according to claim 1, wherein the first through hole (321) and the second through hole (331) are both screw holes.