Auxiliary tool for butt welding of steel pipes

Abstract

The utility model discloses an auxiliary tool for butt welding of steel pipes, which relates to the technical field of steel pipe welding tools, and comprises a limiting piece, a connecting piece and a locking piece, the two ends of the limiting piece are respectively used for extending into a first steel pipe and a second steel pipe which need to be welded; one end of the connecting piece is detachably and fixedly connected with the limiting piece, and the other end of the connecting piece penetrates through a gap between the first steel pipe and the second steel pipe; the locking piece can slide along the connecting piece and keep the position after sliding so as to clamp and fix the first steel pipe and the second steel pipe together with the limiting piece, the structure is simple, use is convenient, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe welding tools, in particular to an auxiliary tool for butt welding of steel pipes. Background Art

[0002] Steel pipes are widely used in modern applications. For the convenience of transportation, steel pipes are of a certain length. In practical applications, multiple steel pipes are often required to be butt-welded in sequence. Before butt welding of steel pipes, the steel pipe mouths need to be aligned first. The steel pipes must not roll or shift during welding, otherwise the steel pipes will shift after welding, which does not meet the welding requirements. In order to align the pipe mouths of the two butted steel pipes during welding, the steel pipes need to be fixed during the welding process. There are currently two commonly used methods. One is manual fixation, which sometimes requires 2 to 3 people to cooperate to complete the welding work, which increases labor costs and reduces work efficiency. The other is to use auxiliary tools and equipment for fixing, but the existing auxiliary tools are relatively complex in structure, high in cost, and cumbersome to operate. Utility Model Content

[0003] The utility model aims to provide a steel pipe butt welding auxiliary tool to solve the problems existing in the above-mentioned prior art, with simple structure, convenient use and low cost.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a steel pipe butt welding auxiliary tool, comprising: a limit piece, a connecting piece and a locking piece, wherein the two ends of the limit piece are respectively used to extend into the interior of a first steel pipe and a second steel pipe to be welded; one end of the connecting piece is used to be detachably fixedly connected to the limit piece, and the other end is used to pass through the gap between the first steel pipe and the second steel pipe; the locking piece can slide along the connecting piece and maintain the position after sliding so as to clamp and fix the first steel pipe and the second steel pipe together with the limit piece.

[0006] Preferably, the connecting member is a sheet-shaped bolt, the locking member is a nut, and the nut is threadedly connected to the sheet-shaped bolt;

[0007] Preferably, the limiting member is a metal rod, and one end of the sheet-like bolt extending into the first steel pipe and the second steel pipe is provided with a connecting hole, and the metal rod is used to pass through the connecting hole.

[0008] Preferably, the diameter of the metal rod is less than 2 / 3 of the diameter of the connecting hole.

[0009] Preferably, the sheet-shaped bolts are made of metal.

[0010] Preferably, the sheet-shaped bolts are cut from cylindrical bolts.

[0011] Compared with the prior art, the utility model has achieved the following technical effects:

[0012] The utility model provides a steel pipe butt welding auxiliary tool, which extends the two ends of a limiting piece into a first steel pipe and a second steel pipe to be welded respectively and connects them with a connecting piece, and slides the locking piece so as to clamp and fix the first steel pipe and the second steel pipe together with the limiting piece, thereby spot welding and fixing the first steel pipe and the second steel pipe. At this time, the locking piece only needs to be slid from the connecting piece to release the clamping and fixing between the first steel pipe and the second steel pipe, and the connecting piece and the limiting piece are removed by shaking the connecting piece, so that the connecting piece and the limiting piece are taken out for next use. The utility model has a simple structure and is easy to use, reduces labor costs, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of the steel pipe butt welding auxiliary tool provided by the utility model;

[0015] Figure 2 A top view of the steel pipe butt welding auxiliary tool provided by the utility model;

[0016] Figure 3 A disassembled diagram of the steel pipe butt welding auxiliary tool provided by the utility model;

[0017] Figure 4 A front view of a sheet-shaped bolt in a steel pipe butt welding auxiliary tool provided by the utility model;

[0018] Figure 5 for Figure 4 Side view of

[0019] Figure 6 for Figure 4 A top view of

[0020] Figure 7 A structural cross-sectional view of the steel pipe butt welding auxiliary tool provided by the utility model when in use;

[0021] In the figure: 1. sheet bolt; 2. nut; 3. metal rod; 4. first steel pipe; 5. second steel pipe; 6. connecting hole. DETAILED DESCRIPTION

[0022] 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.

[0023] The utility model aims to provide a steel pipe butt welding auxiliary tool to solve the problems existing in the above-mentioned prior art, with simple structure, convenient use and low cost.

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] The utility model provides a steel pipe butt welding auxiliary tool, such as Figures 1 to 6 As shown, it includes: a limit piece, a connecting piece and a locking piece, the two ends of the limit piece are respectively used to extend into the inside of the first steel pipe 4 and the second steel pipe 5 to be welded; one end of the connecting piece is used to be detachably fixedly connected with the limit piece, and the other end is used to pass through the gap between the first steel pipe 4 and the second steel pipe 5; the locking piece can slide along the connecting piece and maintain the position after sliding to clamp and fix the first steel pipe 4 and the second steel pipe 5 together with the limit piece, by respectively extending the two ends of the limit piece into the first steel pipe 4 and the second steel pipe 5 to be welded, and connecting them with the connecting piece, the first steel pipe 4 and the second steel pipe 5 can be clamped and fixed together with the limit piece by sliding the locking piece, so as to spot weld and fix the first steel pipe 4 and the second steel pipe 5, at this time, just slide the locking piece from the connecting piece to release the clamping fixation between the first steel pipe 4 and the second steel pipe 5, shake the connecting piece to remove the connecting piece and the limit piece, so as to take out the connecting piece and the limit piece for next use, the structure is simple, easy to use, reduces labor costs, and improves work efficiency.

[0026] In a preferred embodiment, the connecting member is a sheet-shaped bolt 1, and the locking member is a nut 2. The nut 2 is threadedly connected to the sheet-shaped bolt 1, and has a simple structure, which can meet the requirement of passing through the weld between the first steel pipe 4 and the second steel pipe 5. The first steel pipe 4 and the second steel pipe 5 are clamped and fixed together with the limiter by being threadedly connected to the nut 2.

[0027] In a preferred embodiment, the limiting member is a metal rod 3, and one end of the sheet bolt 1 extending into the first steel pipe 4 and the second steel pipe 5 is provided with a connecting hole 6, and the metal rod 3 is used to pass through the connecting hole 6, which has a simple structure and is easy to use.

[0028] In a preferred embodiment, the diameter of the metal rod 3 is smaller than 2 / 3 of the diameter of the connecting hole 6, so as to facilitate the separation of the metal rod 3 and the sheet-shaped bolt 1 after the electric welding fixation is completed.

[0029] In a preferred embodiment, the sheet-shaped bolt 1 is made of metal, has a simple structure, and is easy to obtain.

[0030] In a preferred embodiment, the sheet-shaped bolt 1 is cut from a cylindrical bolt, which is convenient to obtain and simple to manufacture.

[0031] Usage process: use the first steel pipe 4 and the second steel pipe 5 to be butt-welded to clamp the sheet bolt 1 between them; the metal rod 3 passes through the connection hole 6 opened in the lower middle part of the sheet bolt 1 and is clamped on the inner side of the upper pipe wall of the first steel pipe 4 and the second steel pipe 5 to be butt-welded; by tightening the nut 2, the first steel pipe 4 and the second steel pipe 5 to be butt-welded are aligned, thereby ensuring that the steel pipes are accurately positioned and the positions of the two steel pipes are fixed. After that, the first steel pipe 4 and the second steel pipe 5 can be butt-welded and fixed by spot welding. At this time, just loosen the nut 2 from the sheet bolt 1 and gently shake the sheet bolt 1, the metal rod 3 will fall off from the round hole opened in the lower middle part of the sheet bolt 1, so that the sheet bolt 1 can be taken out from the gap between the first steel pipe 4 and the second steel pipe 5 that are butt-welded, and then the pipe openings of the first steel pipe 4 and the second steel pipe 5 that are butt-welded can be fully welded, thus completing the butt welding of the first steel pipe 4 and the second steel pipe 5.

[0032] The steel pipe butt welding auxiliary tool provided in the present application has the characteristics of simple equipment logical structure, small size and easy to carry, low manufacturing cost, easy operation and use, etc. It is used to assist steel pipe butt welding, realize the positioning and fixation of steel pipe butt welding, fully meet the welding quality requirements, reduce labor costs, and improve work efficiency. It can be processed and manufactured in various specifications and sizes according to needs, and can be promoted and applied to the auxiliary operations of butt welding and positioning and fixation of various steel pipes, plates, etc.

[0033] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A steel pipe butt welding auxiliary tool, characterized in that: include: A stopper, the two ends of which are respectively used to extend into the interior of the first steel pipe and the second steel pipe to be welded; A connecting piece, one end of which is used to be detachably fixedly connected to the limiting piece, and the other end of which is used to pass through the gap between the first steel pipe and the second steel pipe; as well as A locking member, wherein the locking member can slide along the connecting member and maintain a position after sliding so as to clamp and fix the first steel pipe and the second steel pipe together with the limiting member.

2. The steel pipe butt welding auxiliary tool according to claim 1, characterized in that: The connecting piece is a sheet-shaped bolt, and the locking piece is a nut, which is threadedly connected to the sheet-shaped bolt.

3. The steel pipe butt welding auxiliary tool according to claim 2, characterized in that: The limiting member is a metal rod, and one end of the sheet-shaped bolt extending into the first steel pipe and the second steel pipe is provided with a connecting hole, and the metal rod is used to pass through the connecting hole.

4. The steel pipe butt welding auxiliary tool according to claim 3, characterized in that: The diameter of the metal rod is less than 2 / 3 of the diameter of the connecting hole.

5. The steel pipe butt welding auxiliary tool according to claim 2, characterized in that: The sheet-shaped bolt is made of metal.

6. The steel pipe butt welding auxiliary tool according to claim 2, characterized in that: The sheet-shaped bolts are formed by cutting cylindrical bolts.

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