Temporary fixing structure for welding pipe orifice of steel pipe

Abstract

The utility model discloses a temporary fixing structure for a welded pipe opening of a steel pipe, and belongs to the technical field of fixing devices. A steel pipe welding pipe opening temporary fixing structure comprises a fixing frame and penetrating pipes, the two penetrating pipes are coaxially installed in the fixing frame in a spaced mode, an operation space used for welding is formed between the two penetrating pipes, and a position adjusting mechanism used for adjusting a steel pipe is arranged on the side wall of each penetrating pipe; the temporary fixing device has the advantages of being convenient to operate and used for temporary fixing during welding operation of pipe openings of steel pipes of various sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing devices, in particular to a temporary fixing structure for the welded pipe orifice of a steel pipe. Background Art

[0002] Welding: Also known as fusion welding or brazing, it is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by means of heating, high temperature or high pressure. Welding achieves the purpose of joining through the following three methods: fusion welding - heating the workpiece to be joined to make it partially melt to form a molten pool, and after the molten pool cools and solidifies, it is joined. If necessary, a filler can be added for assistance. It is suitable for the welding of various metals and alloys without pressure; pressure welding - pressure must be applied to the workpieces during the welding process, which belongs to the processing of various metal materials and some metal materials; brazing - using a metal material with a melting point lower than that of the base material as the filler metal, wetting the base material with the liquid filler metal, filling the joint gap, and diffusing with the base material to achieve the connection of the workpieces. It is suitable for the welding of various materials and is also suitable for the welding of different metals or dissimilar materials.

[0003] Steel pipes also need welding treatment during use. Before welding the orifices of two steel pipes, the positions need to be adjusted first to align the orifices of the two steel pipes, then make a temporary fixation, and then perform the welding operation on the orifices. The existing fixing structures have a narrow adaptation range and cannot be applied to the fixation of steel pipes of various sizes. Therefore, the utility model proposes a temporary fixing structure for the welded pipe orifice of a steel pipe to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the fixing device used for welding the orifices of two steel pipes in the prior art cannot be applied to steel pipes of various sizes, and to propose a temporary fixing structure for the welded pipe orifice of a steel pipe.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A temporary fixing structure for the welded pipe orifice of a steel pipe includes a fixing frame and pipe penetrations. The two pipe penetrations are coaxially and spacedly installed inside the fixing frame, and an operation space for welding is formed between the two pipe penetrations. A position adjustment mechanism for adjusting the position of the steel pipe is arranged on the side wall of the pipe penetration.

[0007] Furthermore, a protective structure is arranged on the top of the fixing frame, and a ladder leading to the top of the fixing frame is arranged on one side of the protective structure.

[0008] Furthermore, there are multiple position adjustment mechanisms, and the multiple position adjustment mechanisms are respectively located at the top and side of the pipe penetration.

[0009] Even lower, the protection structure includes a guardrail and a steel mesh panel. The steel mesh panel is arranged inside the guardrail. The guardrail is connected to the ladder, and the ladder is connected to the top of the fixed frame. The position adjustment mechanism at the top is located inside the guardrail.

[0010] Furthermore, the position adjustment mechanism includes a disc handle, a threaded rod, and a screw seat. The screw seat is installed radially on the through pipe. A threaded rod is arranged inside the screw seat. The threaded rod penetrates through the side of the through pipe, and a disc handle is arranged at the end of the threaded rod away from the through pipe.

[0011] Furthermore, an arc-shaped plate is rotatably arranged on the threaded rod at the top. The arc-shaped plate is located at the end of the threaded rod away from the disc handle.

[0012] Furthermore, a top head is arranged on the threaded rod at the side. The top head is located at the end of the threaded rod away from the disc handle. The top head includes a universal ball seat and a universal ball. The universal ball seat is fixedly connected to the threaded rod, and a universal ball is arranged at the end of the universal ball seat away from the threaded rod.

[0013] Compared with the prior art, the present utility model provides a temporary fixing structure for the welded pipe orifice of a steel pipe, having the following beneficial effects:

[0014] When in use, for the temporary fixing structure for the welded pipe orifice of a steel pipe of the present utility model, two steel pipes to be welded are inserted into the through pipe, so that the pipe orifices of the two steel pipes are abutted within the working space. Then, the position of the steel pipes in the through pipe is slightly adjusted through the position adjustment mechanism to align the pipe orifices of the two steel pipes. Finally, the staff performs welding operations on the pipe orifices of the two steel pipes within the working space. It can be used for the welding operations of the pipe orifices of steel pipes with different pipe diameters. Compared with the prior art, the applicable range is wider.

[0015] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent description; and to some extent, based on the study of the following text, they will be obvious to those skilled in the art; or, they can be learned from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a side view schematic diagram of the overall structure of the present utility model;

[0018] Figure 3 It is a schematic diagram of the fixed frame of the present utility model;

[0019] Figure 4 It is a schematic diagram of the through pipe and the position adjustment structure of the present utility model.

[0020] In the figure:

[0021] 1. Fixed frame; 101. Frame body; 102. Arc-shaped support block; 2. Pipe penetration; 3. Protection structure; 301. Ladder; 302. Guardrail; 303. Steel mesh plate; 4. Position adjustment mechanism; 401. Disc handle; 402. Threaded rod; 403. Screw seat; 404. Arc-shaped plate; 5. Working space; 6. Top head; 601. Universal ball seat; 602. Universal ball. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Refer to Figures 1-4 , a temporary fixing structure for the welded pipe orifice of a steel pipe according to the present invention includes a fixed frame 1 and a pipe penetration 2. The pipe penetration 2 is a circular pipe. The fixed frame 1 includes a frame body 101 in the shape of a cuboid and an arc-shaped support block 102. The arc-shaped support frame 102 is fixedly installed inside the fixed frame 1, and the arc surface of the arc-shaped support frame 102 supports the outer wall surface of the pipe penetration 2.

[0024] Two pipe penetrations 2 are coaxially and spacedly installed inside the fixed frame 1. The spaced space between the two pipe penetrations 2 forms a working space 5 for welding. The function of the working space 5 is, firstly, to observe the alignment of the pipe orifices when adjusting the position of the steel pipe, and secondly, for the staff to perform welding operations on the two pipe orifices from the position of the working space 5.

[0025] A position adjustment mechanism 4 for adjusting the position of the steel pipe is installed on the side wall of the pipe penetration 2. Specifically, after the position adjustment mechanism 4 adjusts the position of the steel pipe, the steel pipe is fixed at the adjusted position, so that the alignment state of the pipe orifices of the two steel pipes remains stable, which is convenient for welding.

[0026] A protection structure 3 is installed on the top of the fixed frame 1. A ladder 301 leading to the top of the fixed frame 1 is provided on one side of the protection structure 3. The ladder 301 is connected to the top of the fixed frame 1 for the staff to climb onto the top of the fixed frame 1.

[0027] According to different construction projects, the diameters of the steel pipes to be welded are different. When welding steel pipes with a diameter of less than 1 meter, the staff can stand on the ground and conveniently reach various positions outside the pipe orifice of the steel pipe for welding operations; while for steel pipes with a diameter of more than 1 meter, especially for steel pipes with diameters of 2 meters and 3 meters, it is very difficult for the staff to directly reach the upper and top positions of the steel pipe when standing on the ground, and generally high-altitude operations are required.

[0028] When the present solution is used to temporarily fix a steel pipe longer than 2 meters, a ladder 301 may be provided to facilitate workers to climb onto the top of the fixing frame 1 and perform welding operations on the pipe opening from above the steel pipe.

[0029] There are multiple position adjustment mechanisms 4, which are respectively located on the top and side of the through-tube 2. The positions of the steel pipes are adjusted from the top and both sides of the through-tube 2 so that the two steel pipes are located as close to the vertical center line of the through-tube 2 as possible, and the pipe openings are aligned.

[0030] The protection structure 3 includes a guardrail 302 and a steel mesh plate 303. The steel mesh plate 303 is installed at the inner bottom of the guardrail 302. The steel mesh plate 303 is fixedly installed on the top of the frame 101. The screw seat 403 at the top passes through the steel mesh plate 303.

[0031] The guardrail 302 is connected to the ladder 301, and the ladder 301 is connected to the top of the fixing frame 1. The top position adjustment mechanism 4 is located on the inner side of the guardrail 302. When temporarily fixing a steel pipe with a diameter exceeding 2 meters, the staff climbs to the top of the fixing frame 1 through the ladder 301, and then operates the top position adjustment mechanism 4 inside the guardrail 302 to improve safety.

[0032] The position adjustment mechanism 4 includes a disc handle 401, a threaded rod 402, and a screw seat 403. The screw seat 403 is installed on the penetration tube 2 along the radial direction of the penetration tube 2. The threaded rod 402 is arranged inside the screw seat 403. The outer wall of the threaded rod 402 is processed with screw teeth. The inside of the screw seat 403 is processed with thread grooves. The threaded rod 402 and the screw seat 403 are threadedly connected. The threaded rod 402 passes through the side of the penetration tube 2. When the threaded rod 402 is twisted, the end of the threaded rod 402 located on the inner side of the penetration tube 2 presses against the steel pipe to adjust the position of the steel pipe.

[0033] A disc handle 401 is welded to one end of the threaded rod 402 away from the tube 2, and a labor-saving lever system is formed between the disc handle 401 and the threaded rod 402. Rotating the disc handle 401 drives the threaded rod 402 to be screwed in or out, thereby achieving a labor-saving effect and reducing the difficulty of operation.

[0034] An arc plate 404 is rotatably mounted on the threaded rod 402 at the top. The arc plate 404 is located at the end of the threaded rod 402 away from the disc handle 401. The arc plate 404 rotates horizontally with the axis of the threaded rod 402 as the center, pressing the steel pipe from the top down, mainly to prevent the steel pipe from obviously warping upward.

[0035] A top head 6 is fixedly connected to the threaded rod 402 on the side. The top head 6 is located at one end of the threaded rod 402 away from the disc handle 401. The top head 6 includes a universal ball seat 601 and a universal ball 602. The universal ball seat 601 is fixedly connected to the threaded rod 402. A universal ball 602 is rotatably installed at one end of the universal ball seat 601 away from the threaded rod 402. When the threaded rod 402 is screwed into the inside of the pipe 2, the threaded rod 402 drives the universal ball 602 through the universal ball seat 601 to abut against the outside of the steel pipe and close it, holding and pushing the steel pipe to move.

[0036] Since the pipe 2 itself is a circular pipe, when the steel pipe is pushed along the radial direction, in addition to lateral movement, the steel pipe will also have a longitudinal rise in the pipe 2. Therefore, during the movement of the steel pipe, there will be a positional change between the steel pipe and the top head 6. There is friction between the steel pipe and the top head 6. The universal ball 602 is rotatably installed in the universal ball seat 601, which can convert sliding friction into rolling friction, thereby reducing the resistance formed by this part of the friction encountered by the staff when turning the threaded rod 402.

[0037] Working principle: During use, a crane is used at the construction site to lift the steel pipe to be welded, and the steel pipe is inserted into the pipe 2 so that the pipe orifices of the two steel pipes abut against each other and the pipe orifices are located within the working space 5.

[0038] After the steel pipe at the construction site (taking a steel pipe with a diameter of 2 meters and a length of 10 meters as an example) is inserted into the pipe 2, since the pipe 2 itself is a circular pipe, the two steel pipes will automatically move closer to the center of the pipe 2. However, there will still be a deviation of several centimeters at the pipe orifices. At this time, the staff selects to operate one of the position adjustment mechanisms 4 on the side according to the deviation situation, turns the disc handle 401 to drive the threaded rod 402 to rotate, and abuts against the side of the steel pipe through the top head 6 to cause a slight positional deviation of the steel pipe.

[0039] It is possible to only adjust the position of one of the steel pipes, or to adjust the positions of the two steel pipes one after another to align the pipe orifices of the two steel pipes.

[0040] After the pipe orifices of the two steel pipes are aligned, climb up the steel mesh plate 303 through the ladder 301, turn the position adjustment mechanism 4 at the top to fix the positions of the two steel pipes from the top. Finally, the staff performs welding operations on the outside of the pipe orifices of the two steel pipes in the working space 5, or (enters the steel pipe) on the inside of the pipe orifices. After welding, the steel pipe is lifted and removed.

[0041] When hoisting the steel pipe, according to the situation, it can be padded at both axial ends of the pipe 2 to keep the bottom of the steel pipe horizontal and reduce the deformation amount of the steel pipe itself.

[0042] During actual use, it is possible to weld steel pipes with the same pipe diameter size (such as a steel pipe with a pipe diameter of 2 meters), and it is also possible to weld steel pipes with different pipe diameter sizes but a small difference in pipe diameter (such as welding two steel pipes with pipe diameters of 110 cm and 100 cm. Two steel pipes with too large a difference in pipe diameter have no practical welding significance. If necessary, other structures are generally used for connection).

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A temporary fixing structure for the welded pipe orifice of a steel pipe, comprising a fixing frame (1) and a pipe passing through (2), characterized in that, The two pipe sleeves (2) are coaxially and spacedly installed inside the fixing frame (1). An operating space (5) for welding is formed between the two pipe sleeves (2). A position adjusting mechanism (4) for adjusting the position of the steel pipe is arranged on the side wall of the pipe sleeve (2). There are multiple position adjusting mechanisms (4), and the multiple position adjusting mechanisms (4) are respectively located at the top and side of the pipe sleeve (2). The position adjusting mechanism (4) includes a disc handle (401), a threaded rod (402), and a screw seat (403). The screw seat (403) is radially installed on the pipe sleeve (2). A threaded rod (402) is arranged inside the screw seat (403). The threaded rod (402) penetrates through the side of the pipe sleeve (2). A disc handle (401) is arranged at one end of the threaded rod (402) away from the pipe sleeve (2). An arc-shaped plate (404) is rotatably arranged on the threaded rod (402) at the top. The arc-shaped plate (404) is located at one end of the threaded rod (402) away from the disc handle (401). A top head (6) is arranged on the threaded rod (402) at the side. The top head (6) is located at one end of the threaded rod (402) away from the disc handle (401). The top head (6) includes a universal ball seat (601) and a universal ball (602). The universal ball seat (601) is fixedly connected to the threaded rod (402). A universal ball (602) is arranged at one end of the universal ball seat (601) away from the threaded rod (402).

2. The temporary fixing structure for the welded pipe orifice of a steel pipe according to claim 1, characterized in that, A protective structure (3) is arranged at the top of the fixing frame (1). A ladder (301) leading to the top of the fixing frame (1) is arranged on one side of the protective structure (3).

3. The temporary fixing structure for the welded pipe orifice of a steel pipe according to claim 2, characterized in that, The protective structure (3) includes a guardrail (302) and a steel mesh plate (303). The steel mesh plate (303) is arranged inside the guardrail (302). The guardrail (302) is connected to the ladder (301). The ladder (301) is connected to the top of the fixing frame (1). The position adjusting mechanism (4) at the top is located inside the guardrail (302).

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