Butt joint device for large steel pipes with different diameters

Abstract

The utility model discloses a butt joint device for large steel pipes with different diameters, and relates to the technical field of bridge steel pipe connection. Comprising an annular groove formed close to the butt joint end of a steel pipe, a sleeve column is installed on the annular groove, a fixing piece used for limiting the sleeve column is arranged on the side, away from the butt joint end, of the sleeve column, a flange plate is fixed to the side, facing the butt joint end, of the sleeve column, and an abutting piece is fixed to the end, facing the butt joint end, of the steel pipe. The side, facing the butt joint end, of the flange plate is provided with an attaching concave ring matched with the abutting piece. Through the arrangement of the flange plate, the fixing piece and the like, in the high-altitude steel pipe butt joint construction process, installation is easy, meanwhile, construction safety is guaranteed, compared with a traditional welding mode, the connecting mode can guarantee connecting precision to a certain degree, use of a large number of welding materials can be reduced, and cost is reduced. Under the condition that the installation steps are simplified, the cost can be high, and the connection strength between the steel pipes with different pipe diameters can be maintained at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge steel pipe connection, in particular to a butt-jointing device for large steel pipes with different diameters. Background Art

[0002] Large bridges such as the Tuchat Bridge are top-supported steel tube concrete arch bridges. Cable cranes are used to lift the arch ribs and structures on the arch. The cable crane tower cross braces are connected and fixed with large steel pipes of different diameters. In addition, the construction area is at high altitude. The common connection method between large steel pipes is welding. This connection method has many processes, low efficiency, low installation accuracy, and large material waste, which is not conducive to cost control. In order to ensure construction safety, quality and cost, it is necessary to design a docking device between large steel pipes of different diameters to ensure accurate positioning and safe use of large steel pipes of different diameters when docking. Utility Model Content

[0003] The utility model aims to provide a butt joint device for large steel pipes with different diameters, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a butt-jointing device for large steel pipes of different diameters, comprising:

[0005] An annular groove is provided near the butt end of the steel pipe, a sleeve column is installed on the annular groove, a fixing piece is provided on the side of the sleeve column away from the butt end for limiting the position of the sleeve column, and a flange is fixed on the side of the sleeve column facing the butt end.

[0006] Furthermore, a butt piece is fixed to one end of the steel pipe facing the butt end, and a fitting concave ring matched with the butt piece is provided on one side of the flange facing the butt end.

[0007] Furthermore, a retaining ring fixed to the surface of the steel pipe is provided at one end of the annular groove away from the retaining plate, and the fixing member is located between the retaining ring and the sleeve column.

[0008] Furthermore, the fixing member includes a screw rod fixed to the side of the sleeve column away from the abutment plate, a threaded sleeve is threadedly connected to the surface of the screw rod, and a abutment rod is fixed to the other end of the threaded sleeve.

[0009] Furthermore, the fixing members are arranged in a plurality and are equidistantly on the sleeve column.

[0010] Furthermore, the flange is provided with a plurality of docking holes for connection, and the flange and the sleeve are connected and fixed by a plurality of rib plates.

[0011] Furthermore, the length of the annular groove is greater than the minimum distance between the side of the flange facing the butt end and the end of the abutting rod facing away from the abutting plate.

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

[0013] The butt joint device for large steel pipes of different diameters is simple to install and ensures construction safety during the high-altitude steel pipe butt joint construction process through the arrangement of flanges and fixings. Compared with the traditional welding method, this connection method can not only ensure the connection accuracy to a certain extent, but also reduce the use of a large amount of welding materials. While simplifying the installation steps, the cost can be increased and the connection strength between steel pipes of different diameters can be maintained at the same time.

[0014] At the same time, this method has no effect on the strength of the steel pipe itself. Cranes or hoists are still used for installation and connection during the construction process. The installation method does not change much, and there is no need to learn new installation steps. It has strong adaptability and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the butt connection structure of a large diameter steel pipe and a small diameter steel pipe of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the docking device of the utility model;

[0017] Figure 3 This is a schematic diagram of the fixing structure of the utility model.

[0018] In the figure: 1. steel pipe; 2. ring groove; 3. butt ring; 4. butt plate; 5. sleeve column; 6. flange; 7. docking hole; 8. fixing piece; 801. screw rod; 802. threaded sleeve; 803. butt rod; 9. rib plate; 10. fitting concave ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model large diameter pipe is a steel pipe of φ630×10×684mm, the flange 6 is centrally welded on the sleeve 5 to form a whole, the flange 6 is reserved with a docking hole 7 matching the small diameter pipe flange 6, the rib plate 9 is annularly welded on the outside of the connection between the large diameter pipe and the flange 6, the flange 6 is a steel sheet of (870-400)×16mm, and the rib plate 9 is a steel plate of 120×10×250mm.

[0021] like Figure 1-Figure 2 As shown, the utility model provides a technical solution: a butt joint device for large steel pipes with different diameters, comprising:

[0022] An annular groove 2 is provided near the butt end of the steel pipe 1, on which a sleeve column 5 is installed, a fixing member 8 is provided on the side of the sleeve column 5 facing away from the butt end for limiting the position of the sleeve column 5, and a flange 6 is fixed on the side of the sleeve column 5 facing the butt end, the large diameter pipe and the small diameter pipe are connected and fixed by the flange 6, and after the connection, the position of the flange 6 is fixed by adjusting the fixing member 8 to ensure the load-bearing capacity.

[0023] like Figure 2 As shown, in order to ensure the smooth implementation of this embodiment, it is necessary to understand that a butt piece 4 is fixed to one end of the steel pipe 1 facing the butt end, and a fitting concave ring 10 matched with the butt piece 4 is provided on the side of the flange 6 facing the butt end. Under the setting of this structure, the flange 6 can be separated from one end of the butt piece 4 and slide in the annular groove 2 of the steel pipe 1, so that the butt end of the steel pipe 1 has sufficient adjustment and activity space during the butt installation process. At the same time, during the butt connection process, the butt piece 4 is embedded in the fitting concave ring 10, so that the butt piece 4 is flush with one side of the flange 6, and the accuracy and fit can be guaranteed during the butt connection process. A sealing gasket can be attached to the side of the butt piece 4 away from the butt end to increase the stress at the connection after the steel pipe 1 is connected.

[0024] like Figure 2 As shown, in order to ensure the smooth implementation of this embodiment, it is necessary to understand that a retaining ring 3 fixed to the surface of the steel pipe 1 is provided at one end of the annular groove 2 away from the retaining plate 4, and a fixing member 8 is located between the retaining ring 3 and the sleeve column 5. The fixing member 8 includes a screw rod 801 fixed to the side of the sleeve column 5 away from the retaining plate 4, and a threaded sleeve 802 is threadedly connected to the surface of the screw rod 801, and a retaining rod 803 is fixed to the other end of the threaded sleeve 802. The fixing member 8 is used to fix the position of the sleeve column 5. During use, after the steel pipes 1 of different diameters are connected, the position of the threaded sleeve 802 can be adjusted by rotating the threaded sleeve 802 on the fixing member 8. After the threaded sleeve 802 on each fixing member 8 is rotated, the retaining rod 803 is pressed against the retaining ring 3 to limit and fix the sleeve column 5 to ensure the stability of the position of the sleeve column 5.

[0025] To ensure the smooth implementation of this embodiment, it is necessary to understand that the fixing members 8 are arranged in a plurality and equidistantly on the sleeve column 5, so that the position of the sleeve column 5 is more stable and the force is stronger. The number of fixing members 8 is adjusted according to factors such as the diameter and weight of the steel pipe 1.

[0026] like Figure 2As shown, in order to ensure the smooth implementation of this embodiment, it is necessary to understand that a plurality of docking holes 7 for connection are provided on the flange 6, and the flange 6 and the sleeve column 5 are also connected and fixed by a plurality of ribs 9, and the number of the docking holes 7 is consistent with the number of the docking holes 7 on the steel pipe 1 to be docked, and the flange 6 and the sleeve column 5 are fixed by welding with ribs to increase the strength.

[0027] like Figure 2 As shown, to ensure the smooth implementation of this embodiment, it is necessary to understand that the length of the annular groove 2 is greater than the minimum distance from the side of the flange 6 facing the docking end to the end of the support rod 803 away from the support plate 4, so that the flange 6 has sufficient adjustment space.

[0028] The installation process is as follows: after the installation of the larger diameter pipe is completed, the surveyor will accurately measure the small diameter pipe between the large diameter pipes, and the on-site construction personnel will cut, process and fix the small diameter pipe, flange 6 and rib plate 9 according to the measurement data. After the small diameter pipe is processed, the tower crane will dock and install the small diameter pipe with the large diameter pipe, and the large diameter pipe and the small diameter pipe are connected with high-strength bolts at the joints.

[0029] After the large-diameter pipe and the small-diameter pipe are hoisted to the appropriate position, maintain the position of the large-diameter pipe and move the small-diameter pipe closer to the large-diameter pipe. After approaching, adjust the flange 6 so that the holes on the flange 6 of the large-diameter pipe and the small-diameter pipe correspond one to one, and connect and fix them with high-strength bolts. After the connection and fixation, stabilize the position of the flange 6 and the sleeve 5 by adjusting and fixing, and complete the docking installation work of pipes with different diameters.

[0030] Although the 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 variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A butt joint device for large steel pipes of different diameters, characterized in that: include: An annular groove (2) is provided near the butt end of the steel pipe (1), a sleeve column (5) is installed on the annular groove (2), a fixing member (8) is provided on the side of the sleeve column (5) facing away from the butt end for limiting the position of the sleeve column (5), and a flange plate (6) is fixed on the side of the sleeve column (5) facing the butt end.

2. A butt joint device for large steel pipes of different diameters according to claim 1, characterized in that: A butt piece (4) is fixed to one end of the steel pipe (1) facing the butt end, and a fitting concave ring (10) matching the butt piece (4) is provided on one side of the flange (6) facing the butt end.

3. The butt-jointing device for large steel pipes of different diameters according to claim 1, characterized in that: A retaining ring (3) fixed to the surface of the steel pipe (1) is provided at one end of the annular groove (2) away from the retaining plate (4), and the fixing member (8) is located between the retaining ring (3) and the sleeve column (5).

4. The device for butt-jointing large steel pipes of different diameters according to claim 1, characterized in that: The fixing member (8) comprises a screw rod (801) fixed to the side of the sleeve column (5) facing away from the abutment plate (4), a threaded sleeve (802) being threadedly connected to the surface of the screw rod (801), and a abutment rod (803) being fixed to the other end of the threaded sleeve (802).

5. The device for butt-jointing large steel pipes of different diameters according to claim 1, characterized in that: The fixing members (8) are arranged in a plurality and are equidistantly arranged on the sleeve column (5).

6. The device for butt-jointing large steel pipes of different diameters according to claim 1, characterized in that: The flange (6) is provided with a plurality of docking holes (7) for connection, and the flange (6) and the sleeve column (5) are connected and fixed via a plurality of rib plates (9).

7. The device for butt-jointing large steel pipes of different diameters according to claim 1, characterized in that: The length of the annular groove (2) is greater than the minimum distance between the side of the flange (6) facing the butt end and the end of the butt rod (803) facing away from the butt plate (4).

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