Butt jointing device for pipe welding

Abstract

The utility model discloses a kind of butt joint devices for pipeline welding, belong to pipeline welding technical field.The butt joint device for pipeline welding is used to make the end face of first pipeline and second pipeline align, comprising: fixed part, sliding part and adjusting part;Fixed part includes fixed sleeve fixed on the first pipeline;Sliding part includes sliding sleeve on the second pipeline;Adjusting part includes first rod body, second rod body and telescopic piece, one end of the first rod body is fixedly connected with the fixed sleeve, the other end of first rod body abuts ground and is rotatably connected with one end of the telescopic piece, the other end of telescopic piece is rotatably connected with the second rod body, one end of the second rod body is fixedly connected with the sliding sleeve, the other end of second rod body is rotatably connected with the middle part of the first rod body, avoid the problem that first pipeline and second pipeline are bent downwards after rear end by gravity, so that the end face of two pipelines can be aligned, reduce the difficulty of welding, improve the quality of weld.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, and specifically to a butt welding device for pipeline welding. Background Technology

[0002] Chemical plants are factories engaged in the chemical industry, such as coal and oil companies. In the process of production activities, they need numerous pipelines to transport production materials, energy and products.

[0003] The factory has many pipes. When there are pipe rerouting, factory renovation, or factory expansion, pipe welding is frequently required. During the pipe welding process, the ends of the two pipes to be welded are affected by gravity and will bend and deform downwards, causing the end faces of the two pipes to not be aligned, which increases the difficulty of welding and can easily affect the quality of the weld. Utility Model Content

[0004] The purpose of this invention is to overcome the problems in the prior art and provide a butt welding device for pipes that avoids the problem of the first and second pipes bending downwards under gravity, so that the end faces of the two pipes can be aligned, reducing the difficulty of welding and improving the quality of the weld.

[0005] This utility model provides a pipe welding butt welding device for aligning the end faces of a first pipe and a second pipe, comprising: a fixing part, a sliding part, and an adjusting part; the fixing part includes a fixing sleeve fixed to the first pipe; the sliding part includes a sliding sleeve sleeved on the second pipe; the adjusting part includes a first rod, a second rod, and a telescopic member, one end of the first rod being fixedly connected to the fixing sleeve, the other end of the first rod abutting the ground and rotatably connected to one end of the telescopic member, the other end of the telescopic member being rotatably connected to the second rod, one end of the second rod being fixedly connected to the sliding sleeve, and the other end of the second rod being rotatably connected to the middle of the first rod. By adjusting the length of the telescopic member, the angle between the first rod and the second rod is reduced, causing the sliding sleeve to slide towards the fixing sleeve, reducing the distance between the fixing sleeve and the sliding sleeve, and simultaneously increasing the height between the fixing sleeve and the sliding sleeve relative to the bottom surface, thereby raising the first pipe and the second pipe upwards respectively, further making the first pipe and the second pipe coaxial, and aligning and paralleling the end faces of the first pipe and the second pipe, facilitating welding.

[0006] Preferably, the telescopic component includes a first threaded sleeve, a second threaded sleeve, and a double-ended screw. The end of the first threaded sleeve is rotatably connected to the second rod body. The second rod body is internally threaded to one end of the double-ended screw. The other end of the double-ended screw is threaded to the second threaded sleeve. The end of the second threaded sleeve is rotatably connected to the end of the first rod body away from the fixed sleeve. The rotatable connection to the double-ended screw enables the first threaded sleeve and the second threaded sleeve to move away from or closer to each other.

[0007] Preferably, a rotating rod is fixedly connected to the middle of the double-ended screw to facilitate rotation of the double-ended screw.

[0008] Preferably, the fixed sleeve and the sliding sleeve have the same structure, and both include a first arc plate, a second arc plate and a fastener. One end of the first arc plate and one end of the second arc plate are hinged to each other, and the other end of the first arc plate and the other end of the second arc plate are fixedly connected by the fastener, so that the first arc plate and the second arc plate can form a collar for being fitted onto the first pipe and the second pipe. The first pipe and the second pipe forming the fixed sleeve are clamped onto the first pipe, and the first pipe and the second pipe forming the sliding sleeve are fitted onto the second pipe.

[0009] Preferably, the fastener is a bolt, and bolt holes are provided at the ends of the first arc plate and the second arc plate. The bolt is disposed in the bolt holes for connecting the first arc plate and the second arc plate.

[0010] Preferably, the inner arc surfaces of the first and second pipes constituting the sliding sleeve are each provided with a plurality of balls for reducing friction.

[0011] Preferably, a first plate is fixedly connected to the end face of the sliding sleeve. The first plate is parallel to the axis of the sliding sleeve, and the surface of the first plate is in close contact with the surface of the second pipe. The first plate spans the gap between the first pipe and the second pipe.

[0012] Preferably, a second plate is fixedly disposed on the end face of the sliding sleeve, and the second plate is symmetrically disposed with respect to the first plate.

[0013] Preferably, a pad is rotatably provided at the end of the first rod away from the fixed sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are: Both the first and second pipes have their ends bent downwards. A fixed sleeve is then fitted onto the first pipe, and a sliding sleeve is slidably fitted onto the second pipe. The end of the first rod rests against the ground. Adjusting the telescopic component increases its length, causing the sliding sleeve to slide towards the fixed sleeve. Simultaneously, both the fixed and sliding sleeves rise, making the first and second pipes coaxial and their end faces aligned and parallel, facilitating welding. This pipe welding butt-jointing device can lift the first and second pipes upwards, preventing their ends from bending downwards under gravity, ensuring alignment of the end faces, reducing welding difficulty, and improving weld quality. Attached Figure Description

[0015] Figure 1 This is a first schematic diagram of the present invention; Figure 2 This is a schematic diagram of the end face of the sliding sleeve; Figure 3 This is a second schematic diagram of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. First pipe, 2. Second pipe, 3. Fixed sleeve, 4. Sliding sleeve, 5. First rod body, 6. Second rod body, 7. First threaded sleeve, 8. Second threaded sleeve, 9. Double-ended screw, 10. Rotating rod, 11. First arc plate, 12. Second arc plate, 13. Fastener, 14. Ball bearing, 15. First plate body, 16. Second plate body, 17. Pad. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar words used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0019] The accompanying drawings in this disclosure are not drawn to scale, and the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only structural schematic diagrams.

[0020] The pipe welding butt welding device provided by this utility model is as follows: Figure 1 The device, used to align the end faces of the first pipe 1 and the second pipe 2, includes a fixing part, a sliding part, and an adjusting part. The fixing part includes a fixing sleeve 3 fixed to the first pipe 1. The sliding part includes a sliding sleeve 4 sleeved on the second pipe 2. The adjusting part includes a first rod 5, a second rod 6, and a telescopic member. One end of the first rod 5 is fixedly connected to the fixing sleeve 3, and the other end of the first rod 5 abuts against the ground and is rotatably connected to one end of the telescopic member. The other end of the telescopic member is rotatably connected to the second rod 6. One end of the second rod 6 is fixedly connected to the sliding sleeve 4, and the other end of the second rod 6 is rotatably connected to the middle of the first rod 5. By adjusting the length of the telescopic member, the angle between the first rod 5 and the second rod 6 is reduced, causing the sliding sleeve 4 to slide towards the fixing sleeve 3. The distance between the fixing sleeve 3 and the sliding sleeve 4 decreases, while the height between the fixing sleeve 3 and the sliding sleeve 4 relative to the bottom surface increases. This allows the first pipe 1 and the second pipe 2 to be raised, further making the first pipe 1 and the second pipe 2 coaxial, and the end faces of the first pipe 1 and the second pipe 2 aligned and parallel to each other, facilitating welding.

[0021] Both the ends of the first pipe 1 and the second pipe 2 are bent downwards. At this point, the fixing sleeve 3 is fixedly fitted onto the first pipe 1, and the sliding sleeve 4 is slidably fitted onto the second pipe 2. The end of the first rod 5 abuts against the ground. The telescopic component is adjusted to increase its length, causing the sliding sleeve 4 to slide towards the fixing sleeve 3. Simultaneously, the fixing sleeve 3 and the sliding sleeve 4 rise, making the first pipe 1 and the second pipe 2 coaxial. The end faces of the first pipe 1 and the second pipe 2 are aligned and parallel, facilitating welding. This pipe welding butt welding device can lift the first pipe 1 and the second pipe 2 upwards, avoiding the problem of the ends bending downwards under gravity, ensuring the end faces of the two pipes are aligned, reducing welding difficulty, and improving weld quality.

[0022] In this embodiment, as Figure 1 and Figure 3 The telescopic component includes a first threaded sleeve 7, a second threaded sleeve 8, and a double-ended screw 9. The end of the first threaded sleeve 7 is rotatably connected to the second rod body 6. The second rod body 6 is internally threaded to one end of the double-ended screw 9. The other end of the double-ended screw 9 is threaded to the second threaded sleeve 8. The end of the second threaded sleeve 8 is rotatably connected to the end of the first rod body 5 away from the fixed sleeve 3. The rotatable connection to the double-ended screw 9 enables the first threaded sleeve 7 and the second threaded sleeve 8 to move away from or close to each other. A rotating rod 10 is fixedly connected to the middle of the double-ended screw 9 to facilitate its rotation.

[0023] Rotating the rotating rod 10 causes the double-ended screw 9 to rotate, allowing the first threaded sleeve 7 and the second threaded sleeve 8 to move away from or closer to each other, thereby achieving the extension or shortening of the telescopic component.

[0024] In this embodiment, as Figure 1-3 The fixed sleeve 3 and the sliding sleeve 4 have the same structure, and both include a first arc plate 11, a second arc plate 12 and a fastener 13. One end of the first arc plate 11 is hinged to one end of the second arc plate 12, and the other end of the first arc plate 11 is fixedly connected to the other end of the second arc plate 12 through the fastener 13, so that the first arc plate 11 and the second arc plate 12 can form a collar for being fitted onto the first pipe 1 and the second pipe 2. The first pipe 1 and the second pipe 2 forming the fixed sleeve 3 are clamped onto the first pipe 1, and the first pipe 1 and the second pipe 2 forming the sliding sleeve 4 are fitted onto the second pipe 2.

[0025] The purpose is to facilitate the installation of the fixed sleeve 3 and the sliding sleeve 4 on the first pipe 1 and the second pipe 2 respectively, so as to facilitate disassembly.

[0026] In this embodiment, as Figure 1-3The fastener 13 is a bolt. The ends of the first arc plate 11 and the second arc plate 12 are provided with bolt holes. The bolt is placed in the bolt holes and is used to connect the first arc plate 11 and the second arc plate 12.

[0027] The purpose is to fix the first arc plate 11 and the second arc plate 12.

[0028] In this embodiment, as Figure 2 The inner arc surfaces of the first pipe 1 and the second pipe 2 constituting the sliding sleeve 4 are each provided with a plurality of ball bearings 14 for reducing friction.

[0029] The sliding sleeve 4 allows for easy left and right movement.

[0030] In this embodiment, as Figure 1 The end face of the sliding sleeve 4 is fixedly connected to a first plate 15. The first plate 15 is parallel to the axis of the sliding sleeve 4, and the plate surface of the first plate 15 is in close contact with the surface of the second pipe 2. The first plate 15 spans the gap between the first pipe 1 and the second pipe 2.

[0031] The purpose is that during use, the first plate 15 can push the ends of the first pipe 1 and the second pipe 2 to move upward simultaneously, so as to prevent misalignment of the end faces of the first pipe 1 and the second pipe 2.

[0032] In this embodiment, as Figure 1 The end face of the sliding sleeve 4 is fixedly provided with a second plate 16, which is symmetrically arranged with the first plate 15.

[0033] The second plate 16 is used to balance the forces on both sides of the first plate 15 and prevent the first plate 15 from tilting excessively.

[0034] In this embodiment, as Figure 1 and Figure 3 A pad 17 is rotatably provided at the end of the first rod 5 away from the fixed sleeve 3.

[0035] The method of using the pipe welding butt welding device of this utility model is as follows: Both the ends of the first pipe 1 and the second pipe 2 are bent downwards. At this time, the fixed sleeve 3 is fixedly fitted on the first pipe 1, and the sliding sleeve 4 is slidably fitted on the second pipe 2. The end of the first rod 5 abuts the ground. Rotating the rotating rod 10 in the forward direction causes the double-headed screw 9 to rotate in the forward direction, so that the first threaded sleeve 7 and the second threaded sleeve 8 can move away from each other. The telescopic part extends, and the sliding sleeve 4 slides towards the fixed sleeve 3. At this time, the fixed sleeve 3 and the sliding sleeve 4 rise simultaneously, so that the first pipe 1 and the second pipe 2 are coaxial, and the end faces of the first pipe 1 and the second pipe 2 are aligned and parallel to each other, which facilitates welding. During the welding process, spot welding is first performed at multiple different positions around the weld seam. Then, the fastener 13 is loosened, the rotating rod 10 is rotated in the opposite direction, and the welding device for this pipeline is removed, and formal welding can then be carried out.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A butt welding device for aligning the end faces of a first pipe (1) and a second pipe (2), characterized in that, include: The fixing part includes a fixing sleeve (3) fixed on the first pipe (1); The sliding part includes a sliding sleeve (4) fitted onto the second pipe (2); The adjustment part includes a first rod (5), a second rod (6), and a telescopic component. One end of the first rod (5) is fixedly connected to the fixed sleeve (3), and the other end of the first rod (5) abuts the ground and is rotatably connected to one end of the telescopic component. The other end of the telescopic component is rotatably connected to the second rod (6). One end of the second rod (6) is fixedly connected to the sliding sleeve (4), and the other end of the second rod (6) is rotatably connected to the middle of the first rod (5). By adjusting the length of the telescopic component, the angle between the first rod (5) and the second rod (6) is reduced, so that the sliding sleeve (4) slides towards the direction close to the fixed sleeve (3), the distance between the fixed sleeve (3) and the sliding sleeve (4) decreases, and the height between the fixed sleeve (3) and the sliding sleeve (4) relative to the bottom surface increases, so that the first pipe (1) and the second pipe (2) can be raised respectively, and the first pipe (1) and the second pipe (2) are coaxial, and the end faces of the first pipe (1) and the second pipe (2) are aligned and parallel to each other, which facilitates welding.

2. The pipe welding butt welding device as described in claim 1, characterized in that, The telescopic component includes a first threaded sleeve (7), a second threaded sleeve (8), and a double-ended screw (9). The end of the first threaded sleeve (7) is rotatably connected to the second rod body (6). The second rod body (6) is internally threaded to one end of the double-ended screw (9). The other end of the double-ended screw (9) is threaded to the second threaded sleeve (8). The end of the second threaded sleeve (8) is rotatably connected to the end of the first rod body (5) away from the fixed sleeve (3). The double-ended screw (9) is rotatably connected, which enables the first threaded sleeve (7) and the second threaded sleeve (8) to move away from or close to each other.

3. The pipe welding butt welding device as described in claim 2, characterized in that, The middle part of the double-ended screw (9) is fixedly connected to a rotating rod (10) that facilitates the rotation of the double-ended screw (9).

4. The pipe welding butt welding device as described in claim 1, characterized in that, The fixed sleeve (3) and the sliding sleeve (4) have the same structure and both include a first arc plate (11), a second arc plate (12) and a fastener (13). One end of the first arc plate (11) is hinged to one end of the second arc plate (12), and the other end of the first arc plate (11) is fixedly connected to the other end of the second arc plate (12) through the fastener (13), so that the first arc plate (11) and the second arc plate (12) can form a collar for being fitted on the first pipe (1) and the second pipe (2). The first pipe (1) and the second pipe (2) forming the fixed sleeve (3) are clamped on the first pipe (1), and the first pipe (1) and the second pipe (2) forming the sliding sleeve (4) are fitted on the second pipe (2).

5. The pipe welding butt welding device as described in claim 4, characterized in that, The fastener (13) is a bolt. The ends of the first arc plate (11) and the second arc plate (12) are provided with bolt holes. The bolt is placed in the bolt holes and is used to connect the first arc plate (11) and the second arc plate (12).

6. The pipe welding butt welding device as described in claim 4, characterized in that, The inner arc surfaces of the first pipe (1) and the second pipe (2) constituting the sliding sleeve (4) are provided with a plurality of balls (14) for reducing friction.

7. The pipe welding butt welding device as described in claim 1, characterized in that, The end face of the sliding sleeve (4) is fixedly connected to a first plate (15). The first plate (15) is parallel to the axis of the sliding sleeve (4), and the plate surface of the first plate (15) is in close contact with the surface of the second pipe (2). The first plate (15) spans the gap between the first pipe (1) and the second pipe (2).

8. The pipe welding butt welding device as described in claim 7, characterized in that, The end face of the sliding sleeve (4) is fixedly provided with a second plate (16), and the second plate (16) is symmetrically arranged with the first plate (15).

9. The pipe welding butt welding device as described in claim 1, characterized in that, The end of the first rod (5) away from the fixed sleeve (3) is rotatably provided with a pad (17).

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