CN209986473U - Special clamp for butt welding of small-caliber pipeline - Google Patents

Abstract

The utility model discloses a special fixture for butt welding of small-caliber pipes, which comprises a fixture body and locking devices arranged on two sides of the fixture body, wherein the fixture body comprises two symmetrically arranged base plates, welding holes are formed in the base plates, arc-shaped clamping grooves are formed in the central shaft positions of the inner sides of the base plates, and the arc-shaped clamping grooves of the two base plates are relatively spliced to form a pipeline channel; and a ball used for rotating the pipeline is arranged in the arc-shaped clamping groove. The utility model provides an inside ball that is provided with of special fixture when need rotate the pipeline and weld other positions of pipeline in welding process, only need to exert oneself slightly to the pipeline, rotates the pipeline very easily under the support of ball to made things convenient for welded operation, effectively improved welding quality and efficiency of construction.

Description

Special clamp for butt welding of small-caliber pipeline

Technical Field

The utility model relates to an auxiliary welding tool among the pipeline welding especially relates to a special fixture that small-bore pipeline butt welding used.

Background

When the small-caliber pipelines on two sides are in butt welding construction, the phenomena of folding and staggered joint often occur, the problems of large butt difficulty, difficult operation and the like often occur, and the problems are particularly in industries with high requirements on butt quality and welding quality. The alignment of the two pipes during welding is important as it directly affects the service life of the pipes. The welding time of the pipeline is short due to the fact that the number of the pipe fittings is large, and the requirement that the efficiency is as high as possible in the opening aligning process is needed, so that the installation period is shortened.

Disclosure of Invention

The utility model aims at providing a small-bore pipeline is to special fixture of mouthful welding usefulness to solve above-mentioned technical problem.

In order to achieve the above object, the utility model adopts the following technical scheme:

a special clamp for butt welding of small-caliber pipes comprises a clamp body and locking devices arranged on two sides of the clamp body, wherein the clamp body comprises two symmetrically arranged base plates, welding holes are formed in the base plates, arc-shaped clamping grooves are formed in the positions of central axes of the inner sides of the base plates, and the arc-shaped clamping grooves of the two base plates are oppositely spliced to form a pipe channel; and a ball used for rotating the pipeline is arranged in the arc-shaped clamping groove.

Further preferably, a groove is formed in the arc-shaped clamping groove, and the ball is arranged in the groove. The ball is arranged in the groove, so that the ball rotates in the same track, and the rotating direction and the angle of the pipeline are easy to control.

Further preferably, the groove is perpendicular to the extending direction of the arc-shaped clamping groove. When the pipeline is rotated, the pipeline can only rotate in a plane perpendicular to the pipeline.

Further preferably, the grooves are two groups, and the front and the rear groups of grooves are symmetrically arranged, so that the pipeline can be fixed or rotated more stably.

Further preferably, the locking device comprises connecting holes formed in two sides of the substrate, the connecting holes on one side of the substrate are connected through hinges, and the connecting holes on the other side of the substrate are connected through bolts. The pipeline is placed on the clamping groove, and the two substrates are connected through a hinge or a bolt to fix the pipeline.

Further preferably, a nut is arranged on the bolt, and the bolt is in threaded connection with the nut. The position of the nut relative to the bolt is adjusted to clamp the pipeline and weld the pipeline.

Further preferably, the diameter of the welding hole is gradually reduced from the outside to the inside. Can be conveniently aligned with the welding seam during welding and is easy to operate.

Further preferably, the substrate is a steel plate, and the material is easily available and widely available.

Has the advantages that: compared with the prior art, the utility model provides a small-bore pipeline is to inside setting up to convex draw-in groove structure of special fixture of mouthful welding usefulness to be provided with the ball in convex draw-in groove structure, wherein convex draw-in groove structure and locking device cooperation can accomplish the fixed of pipeline, need rotate the pipeline when welding other positions of pipeline in the welding process, only need exert oneself a little to the pipeline, rotate the pipeline very easily under the support of ball, thereby made things convenient for welded operation, effectively improved welding quality and efficiency of construction. The clamp can be assembled by adopting common steel plates, hinges and bolts and can be manufactured in advance according to the pipeline specification of a construction site. The welder can automatically adopt the device to carry out butt spot welding and welding construction, the operation is simple, the construction efficiency is high, the butt quality is high, and the device can be repeatedly used.

Drawings

FIG. 1 is a schematic view of the special fixture for butt welding of small-bore pipes according to the present invention in an open state;

FIG. 2 is a schematic view of the special fixture for butt welding of small-bore pipes according to the present invention in a locked state;

FIG. 3 is a side view of the special fixture for butt welding of small-bore pipes of the present invention in a locked state;

reference numerals: 1-substrate, 2-clamping groove, 3-welding hole, 4-connecting hole, 5-hinge, 6-bolt, 7-nut, 8-pipeline, 9-welding seam, 10-groove, 11-ball and 12-pipeline channel.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the special fixture for butt welding of small-bore pipes comprises a fixture body and locking devices arranged on two sides of the fixture body, wherein the fixture body comprises two substrates 1 symmetrically arranged, welding holes 3 are formed in the substrates 1, the welding holes 3 are through holes, the hole diameters of the welding holes 3 are gradually reduced from outside to inside, the hole diameters of the side edges are large, the welding joints can be aligned when welding is convenient, and the operation is easy. The central shaft position of the inner side of the base plate 1 is provided with an arc-shaped clamping groove 2, the arc-shaped clamping grooves 2 of the two base plates are oppositely spliced to form a pipeline channel 12, and the pipeline channel is used for placing a pipeline 8 during welding; two groups of grooves 10 which are vertical to the extending direction of the arc clamping groove 2 are formed in the arc clamping groove 2, and the balls 11 are arranged in the grooves. By providing the balls 11, the pipe 8 is point-contacted with the substrate in the pipe passage 12, so that frictional resistance can be reduced and the pipe 8 can be easily rotated. The ball is arranged in the groove, so that the ball rotates in the same track, and the rotating direction and the angle of the pipeline are easy to control. The two sets of grooves 10 can more stably fix or rotate the pipe.

The locking device comprises connecting holes 4 formed in two sides of the substrate 1, and the connecting holes 4 are connected through hinges 5 or bolts 6. As shown in fig. 1 and 3, the connection holes on one side are connected by a hinge 5, the connection holes on the other side are connected by a bolt 6, and the two substrates 1 are connected and fastened by the hinge 5 and the bolt 6 to fix the pipeline. The bolt 6 is provided with a nut 7, and the nut 7 is in threaded connection with the bolt 6. The position of the nut 7 relative to the bolt 6 is adjusted to clamp the pipeline and weld the pipeline.

When the device is used, as shown in fig. 2, the pipeline 8 is placed in the pipeline channel 12, the base plates are connected and installed through the locking device, the pipeline 8 is fixed, the welding seam 9 needing to be welded is exposed in the welding hole 3, and after the device is in a clamping state through the adjusting nut 7, the pipeline 8 is welded. When the pipeline needs to be rotated to weld other positions of the pipeline 8 in the welding process, the pipeline 8 is easily rotated under the support of the balls 11 only by slightly exerting force on the pipeline 8, so that the welding operation is facilitated, and the welding quality and the construction efficiency are effectively improved. The utility model discloses the base plate can be selected to use ordinary steel sheet can, can accomplish the equipment through steel sheet, hinge and bolt, can form according to the pipeline specification preparation of job site in advance. The welder can automatically adopt the device to carry out butt spot welding and welding construction, the operation is simple, the construction efficiency is high, the butt quality is high, and the device can be repeatedly used.

Claims (8)

1. The utility model provides a special fixture that small-bore pipeline butt welding used which characterized in that: the clamp comprises a clamp body and locking devices arranged on two sides of the clamp body, wherein the clamp body comprises two symmetrically arranged base plates (1), welding holes (3) are formed in the base plates (1), arc-shaped clamping grooves (2) are formed in the central axis positions of the inner sides of the base plates (1), and the arc-shaped clamping grooves (2) of the two base plates are oppositely spliced to form a pipeline channel (12); and a ball (11) used for rotating the pipeline (8) is arranged in the arc-shaped clamping groove (2).

2. The special clamp for the butt welding of the small-caliber pipes as claimed in claim 1, wherein: a groove (10) is formed in the arc-shaped clamping groove (2), and the ball (11) is arranged in the groove.

3. The special clamp for the butt welding of the small-caliber pipes as claimed in claim 2, wherein: the groove (10) is perpendicular to the extending direction of the arc-shaped clamping groove (2).

4. The special clamp for the butt welding of the small-caliber pipes as claimed in claim 2 or 3, wherein:

the grooves (10) are divided into two groups.

5. The special clamp for the butt welding of the small-caliber pipes as claimed in claim 1, wherein: the locking device comprises connecting holes (4) formed in two sides of the substrate (1), the connecting holes in one side of the substrate (1) are connected through a hinge (5), and the connecting holes in the other side of the substrate are connected through a bolt (6).

6. The special clamp for the butt welding of the small-caliber pipes as claimed in claim 5, wherein: and a nut (7) is arranged on the bolt (6), and the bolt (6) is in threaded connection with the nut (7).

7. The special clamp for the butt welding of the small-caliber pipes as claimed in claim 1, wherein: the aperture of the welding hole (3) is gradually reduced from outside to inside.

8. The special clamp for the butt welding of the small-caliber pipes as claimed in claim 1, wherein: the substrate (1) is a steel plate.

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