A pipe butt joint structure

Abstract

The utility model discloses a kind of butt joint structures of round tube, including round tube A, round tube B, the inside welding of round tube A one end has sleeve core A, the inside welding of round tube B one end has sleeve core B, and round tube A, round tube B are mutually spliced by sleeve core A and sleeve core B sleeve joint relationship;The outside of sleeve core A and sleeve core B is opened with several groups of bolt holes in opposite-penetrating mode, the outside of round tube B is opened with bolt head perforation corresponding to several groups of bolt holes, by the sleeve core A of round tube A pre-welding and the sleeve core B of same pre-welding in the temple of round tube B are carried out fast butt joint, and bolt rod is penetrated bolt head perforation opened in the outside of round tube B and the bolt hole opened in sleeve core A sleeve core B, bolt rod is matched, sleeve core A sleeve core B is locked after butt joint fixed state, to realize the effect of assembly type butt joint of round tube structure, avoid the problem that welding is poor in appearance, time-consuming and laborious due to round tube field welding.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, specifically to a circular tube connection structure. Background Technology

[0002] In construction, steel structural round tubes refer to tubular components with a circular cross-section, made of metal materials. They serve as structural supports or decorations in building engineering. In the field of steel structure construction, the use of tubes is quite common, such as round tube columns and truss connecting members in steel structures. They utilize the mechanical properties of the circular cross-section (good torsional resistance and uniform stress distribution) to bear the load. Since the span and height of building structures are relatively large, they are produced in sections and installed on-site for convenient transportation.

[0003] The existing steel structure round tubes are transported to the site and then assembled. The connection between the round tubes is generally done by direct welding. Before welding, the tubes need to be cleaned and positioned. After welding, they need to be ground, polished and rust-proofed. On-site hot work requires special workers. The weld seam is not aesthetically pleasing and is time-consuming and labor-intensive. Therefore, we need to propose a round tube connection structure. Utility Model Content

[0004] The purpose of this utility model is to provide a circular pipe connection structure. In this structure, a set of sleeves A and B are pre-welded into the interior of circular pipes A and B, respectively, at the manufacturing plant. After being transported to the site, sleeve A at one end of circular pipe A is directly inserted into sleeve B of circular pipe B. Then, sleeves A and B are joined and fixed using bolts, thereby achieving a rapid connection between circular pipes A and B and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circular tube butt joint structure, comprising a circular tube A and a circular tube B, wherein a sleeve A is welded inside one end of the circular tube A, and a sleeve B is welded inside one end of the circular tube B; the circular tubes A and B are spliced ​​together through the sleeve A and sleeve B; a plurality of bolt holes are provided on the outer sides of the sleeve A and sleeve B in a through-hole manner, and bolt head through holes corresponding to the plurality of bolt holes are provided on the outer side of the circular tube B; a set of bolt rods for splicing and fixing are installed through the plurality of bolt holes and bolt head through holes respectively.

[0006] Preferably, three sets of first fixing plates are fixedly fitted on the outer side of one end of the sleeve A, and three sets of second fixing plates are fixedly fitted on the outer side of the sleeve B. The outer sides of the three sets of first fixing plates are in contact with the inner wall of the round tube A, and the outer sides of the three sets of second fixing plates are in contact with the inner wall of the round tube B.

[0007] Preferably, both the outer sides of the circular tube A and the circular tube B are provided with two sets of plug welding holes, through which the circular tube A and the circular tube B are welded and fixed to the first fixing plate and the second fixing plate hidden inside, respectively.

[0008] Preferably, the sleeve A and sleeve B are square in shape, and one end of sleeve A is inserted into the interior of sleeve B.

[0009] Preferably, four sets of first limiting plates are fixedly installed on the outer side of one set of the first fixing plates, and several sets of first limiting grooves are opened at one end of the circular tube A, with the several sets of first limiting plates respectively installed inside one set of first limiting grooves.

[0010] Preferably, four sets of second limiting plates are fixedly installed on the outer side of one set of second fixing plates, and several sets of second limiting grooves are opened at one end of the circular tube B, with the several sets of second limiting plates respectively installed inside one set of second limiting grooves.

[0011] Preferably, one end of each of the several sets of bolt rods is fixed by a set of nuts, and one end of each of the several sets of bolt rods is hidden inside a set of bolt head holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention enables rapid docking of a pre-welded sleeve A on a circular tube A and a similarly pre-welded sleeve B on the temporal part of a circular tube B. A bolt shank is inserted through a bolt head hole on the outside of the circular tube B and a bolt hole in sleeve A or sleeve B. The bolt shank and sleeve A / sleeve B are then locked in a fixed state after docking, achieving an assembled docking effect for the circular tube structure. This avoids the problems of poor weld aesthetics and time-consuming, labor-intensive processes associated with on-site welding of circular tubes.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the mounting structure of the sleeve A of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of sleeve A and sleeve B of this utility model;

[0018] Figure 4 This is a schematic diagram of the bolt rod installation structure of this utility model.

[0019] In the diagram: 1. Round tube A; 2. Round tube B; 3. Sleeve A; 4. Sleeve B; 5. First fixing plate; 6. Second fixing plate; 7. Plug weld hole; 8. First limiting plate; 9. First limiting groove; 10. Second limiting plate; 11. Second limiting groove; 12. Bolt hole; 13. Bolt head through hole; 14. Bolt rod; 15. Nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a circular tube connection structure, including a circular tube A1 and a circular tube B2. A sleeve A3 is welded inside one end of the circular tube A1, and a sleeve B4 is welded inside one end of the circular tube B2. The circular tubes A1 and B2 are spliced ​​together by the sleeve A3 and sleeve B4. Several sets of bolt holes 12 are opened through the outer sides of the sleeve A3 and sleeve B4. Bolt head through holes 13 corresponding to the several sets of bolt holes 12 are opened on the outer side of the circular tube B2. A set of bolt rods 14 for splicing and fixing are installed through the several sets of bolt holes 12 and bolt head through holes 13 respectively.

[0022] In use, the round tubes A1 and B2 that need to be spliced ​​are pre-welded with a set of sleeves A3 and B4 respectively in the manufacturing factory. After being transported to the site, the sleeve A3 at one end of the round tube A1 is directly inserted into the sleeve B4 of the round tube B2. By using the several sets of bolt holes 12 that are through-holes on the outside of the sleeves A3 and B4, and the bolt head through holes 13 that are opened on the outside of the round tube B2, the bolt rod 14 is bolted and fixed to the sleeves A3 and B4 after splicing, thereby achieving the effect of quick docking of the round tubes A1 and B2.

[0023] Three sets of first fixing plates 5 are fixedly fitted on the outer side of one end of sleeve A3, and three sets of second fixing plates 6 are fixedly fitted on the outer side of sleeve B4. The outer sides of the three sets of first fixing plates 5 are fitted with the inner wall of the circular tube A1, and the outer sides of the three sets of second fixing plates 6 are fitted with the inner wall of the circular tube B2. Two sets of plug welding holes 7 are opened through the outer sides of both circular tubes A1 and B2. The circular tubes A1 and B2 are welded and fixed to the first fixing plates 5 and second fixing plates 6 hidden inside them through the plug welding holes 7. The setting of the first fixing plates 5 and second fixing plates 6 ensures the stability of the installation and reduces the diameter of sleeve A3 and sleeve B4, thereby reducing the overall weight of the structure. At the same time, the setting of plug welding holes 7 allows the first fixing plates 5 and second fixing plates 6 hidden inside the circular tubes A1 and B2 to be welded and fixed, thereby achieving the effect of installing sleeve A3 and sleeve B4 in the circular tubes A1 and B2 respectively, and the installation is firm and aesthetically pleasing.

[0024] Sleeve A3 and sleeve B4 are square in shape, with one end of sleeve A3 inserted into the interior of sleeve B4. The square shape of sleeve A3 and sleeve B4 prevents them from rotating relative to each other and improves the torsional resistance after the round tubes A1 and B2 are joined.

[0025] Four sets of first limiting plates 8 are fixedly installed on the outer side of one set of first fixing plates 5. Several sets of first limiting grooves 9 are opened at one end of the round tube A1, and several sets of first limiting plates 8 are respectively installed inside one set of first limiting grooves 9. Four sets of second limiting plates 10 are fixedly installed on the outer side of one set of second fixing plates 6. Several sets of second limiting grooves 11 are opened at one end of the round tube B2, and several sets of second limiting plates 10 are respectively installed inside one set of second limiting grooves 11. Through the connection relationship between the first fixing plate 5, the first limiting plate 8, the round tube A1, and the first limiting groove 9, the installation position of the sleeve A3 is limited, so as to avoid the sleeve A3 extending too deep or too shallow into the round tube A1, which would cause the plug welding deviation. Similarly, the second limiting plate 10 and the second limiting groove 11 have the same positioning effect on the sleeve B4.

[0026] One end of several sets of bolt rods 14 is fixed by a set of nuts 15, and one end of several sets of bolt rods 14 is hidden inside a set of bolt head through holes 13. The bolts and nuts 15 are connected by threads to achieve the effect of bolting and fixing the sleeve A3, sleeve B4, and round tube B2. The bolt head through holes 13 are set with a countersunk design to hide one end of the bolt rod 14 and the nut 15, improving aesthetics and protection.

[0027] In practical use, in the manufacturing plant, the sleeve B4 is inserted into the round tube A1 and fixed by plug welding through the pre-reserved plug welding hole 7 on the wall of the round tube A1. Similarly, the sleeve B4 is inserted into the round tube B2 and fixed by plug welding through the pre-reserved plug welding hole 7 on the wall of the round tube B2. When transported to the construction site, the prefabricated round tube A1 with the sleeve A3 connector is inserted into one end of the round tube B2, and then bolted and fixed by bolt rod 14 through bolt head through hole 13 and bolt hole 12, and then bolted with nut 15, so as to achieve the effect of assembled docking of the round tube structure.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circular tube connection structure, characterized in that: It includes a round tube A (1) and a round tube B (2). One end of the round tube A (1) is welded with a sleeve A (3), and one end of the round tube B (2) is welded with a sleeve B (4). The round tube A (1) and the round tube B (2) are spliced ​​together by the sleeve A (3) and the sleeve B (4). The outer sides of the sleeve core A (3) and sleeve core B (4) are provided with several sets of bolt holes (12) through each other. The outer side of the round tube B (2) is provided with bolt head through holes (13) corresponding to the several sets of bolt holes (12). A set of bolt rods (14) for splicing and fixing are installed through the inside of the several sets of bolt holes (12) and bolt head through holes (13).

2. The circular tube butt joint structure according to claim 1, characterized in that: The outer side of one end of the sleeve A (3) is fixedly fitted with three sets of first fixing plates (5), and the outer side of the sleeve B (4) is fixedly fitted with three sets of second fixing plates (6). The outer side of the three sets of first fixing plates (5) is in contact with the inner wall of the round tube A (1), and the outer side of the three sets of second fixing plates (6) is in contact with the inner wall of the round tube B (2).

3. The circular tube butt joint structure according to claim 1, characterized in that: Both the outer sides of the circular tube A (1) and the circular tube B (2) are provided with two sets of plug welding holes (7). The circular tube A (1) and the circular tube B (2) are welded and fixed to the first fixing plate (5) and the second fixing plate (6) hidden inside them respectively through the plug welding holes (7).

4. The circular tube connection structure according to claim 1, characterized in that: The sleeve A (3) and sleeve B (4) are arranged in a square shape, and one end of sleeve A (3) is inserted into the interior of sleeve B (4).

5. A circular tube butt joint structure according to claim 2, characterized in that: Four sets of first limiting plates (8) are fixedly installed on the outer side of one set of the first fixing plates (5). Several sets of first limiting grooves (9) are opened at one end of the round tube A (1). Several sets of first limiting plates (8) are respectively installed inside one set of first limiting grooves (9).

6. A circular tube butt joint structure according to claim 2, characterized in that: Four sets of second limiting plates (10) are fixedly installed on the outer side of one set of second fixing plates (6). Several sets of second limiting grooves (11) are opened at one end of the round tube B (2). Several sets of second limiting plates (10) are respectively installed inside one set of second limiting grooves (11).

7. The circular tube butt joint structure according to claim 1, characterized in that: One end of each of the several sets of bolt rods (14) is fixed by a set of nuts (15), and one end of each of the several sets of bolt rods (14) is hidden inside a set of bolt head through holes (13).

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