Auxiliary device for butt welding of steel pipes

Abstract

The utility model provides an auxiliary device for steel pipe butt welding, and relates to the technical field of steel pipe butt welding fixtures, the auxiliary device comprises a screw rod, a movable connecting frame, a fixed connecting frame, a movable fixture and a fixed fixture, the movable fixture and the fixed fixture are oppositely arranged, and the movable connecting frame is arranged on the side, back to the fixed fixture, of the movable fixture; the movable connecting frame is rotationally connected with the screw rod, the outer wall of the screw rod is in threaded connection with a nut, one end of the fixed connecting frame is fixedly connected with the outer wall of the nut, the other end of the fixed connecting frame is connected with the side, opposite to the movable clamp, of the fixed clamp, and when the screw rod is rotated clockwise, the screw rod drives the movable clamp to move towards the side, opposite to the fixed connecting frame, of the fixed clamp; according to the welding fixture, the structure is simple, use is convenient and fast, the two steel pipes to be welded can be rapidly clamped and fixed, and the welding quality is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of steel pipe butt welding jigs, and particularly to an auxiliary device for steel pipe butt welding. Background Art

[0002] Steel pipe butt welding is a commonly used connection method in modern engineering construction. It forms a firm joint by butt - connecting the ends of two steel pipes and then welding them. However, traditional steel pipe butt welding operations require experienced welders to manually adjust, which is time - consuming and laborious, and is prone to welding defects and deformation.

[0003] Steel pipe butt welding jigs are tools used to fix and align steel pipes during the steel pipe welding process. They can help improve welding quality and efficiency. However, the existing steel pipe butt welding jigs have a relatively complex structure, high cost, and are not convenient to use. Therefore, an auxiliary device for steel pipe butt welding is specifically proposed. Utility Model Content

[0004] The embodiment of this application provides an auxiliary device for steel pipe butt welding. The screw is rotationally connected to the moving jig through a moving connection frame. A nut is screwed on the outer wall of the screw. One end of the fixed connection frame is connected to the screw, and the other end is connected to the fixed jig. When the screw is rotated clockwise, the screw drives the moving jig to move relative to the fixed connection frame towards the fixed jig side, so that the moving jig and the fixed jig clamp the steel pipe, positioning and fixing the two steel pipes to be welded. The structure of this application is simple and convenient to use. It can quickly clamp and fix the two steel pipes to be welded, ensuring welding quality, and solving the problems of the existing steel pipe butt welding jigs having a relatively complex structure, high cost, and being not convenient to use.

[0005] The embodiment of this application provides an auxiliary device for steel pipe butt welding, including a screw, a moving connection frame, a fixed connection frame, a moving jig, and a fixed jig;

[0006] The moving jig and the fixed jig are arranged oppositely;

[0007] The moving connection frame is arranged on the side of the moving jig facing away from the fixed jig, and the first end of the screw is rotationally connected to the moving connection frame;

[0008] A nut is screwed on the outer wall of the screw. The first end of the fixed connection frame is fixedly connected to the outer wall of the nut, and the second end of the fixed connection frame is fixedly connected to the side of the fixed jig facing away from the moving jig.

[0009] In a feasible implementation, the movable fixture includes a first fixture and a second fixture, and a first welding gap is formed between the first fixture and the second fixture; the fixed fixture includes a third fixture and a fourth fixture, and a second welding gap is formed between the third fixture and the fourth fixture, and the first welding gap corresponds to the second welding gap;

[0010] The movable connecting frame is connected to the first fixture and the second fixture, and the fixed connecting frame is connected to the third fixture and the fourth fixture.

[0011] In a feasible implementation, the movable connecting frame includes a transverse rod body and a longitudinal rod body;

[0012] The middle part of the transverse rod body is rotatably connected to the first end of the screw rod, and the longitudinal rod bodies are provided at both ends of the transverse rod body;

[0013] The first ends of the two longitudinal rod bodies are respectively fixedly connected to the outer walls of the first fixture and the second fixture, and the second ends of the two longitudinal rod bodies are respectively fixedly connected to both ends of the transverse rod body.

[0014] In a feasible implementation, the fixed connecting frame includes a first plate body, a second plate body and a third plate body;

[0015] The first plate bodies are provided on the outer walls of the third fixture and the fourth fixture, the second ends of the two first plate bodies are respectively connected to the first ends of the two second plate bodies, the second ends of the two second plate bodies are respectively connected to the first ends of the two third plate bodies, and the second ends of the two third plate bodies are both connected to the outer wall of the nut.

[0016] In a feasible implementation, the two second plate bodies correspond to the two longitudinal rod bodies in position;

[0017] Limit grooves are provided in the middle parts of the two longitudinal rod bodies, limit rods are provided on the outer walls of the two second plate bodies, and the two limit rods are respectively inserted into the two limit grooves.

[0018] In a feasible implementation, magnetic bodies are inlaid on the inner walls of the movable fixture and the fixed fixture, and the magnetic bodies attract the steel pipe.

[0019] In a feasible implementation, a compensating member is provided on the side of the fixed fixture facing the movable fixture, and the compensating member and the movable fixture hold the steel pipe.

[0020] In a feasible implementation, the compensating member includes a cushion block and an insertion rod;

[0021] The fixed fixture is provided with a jack. One end of the plug rod is fixedly connected to the cushion block, and the other end is inserted into the jack. The cushion block and the movable fixture clamp the steel pipe.

[0022] In a feasible implementation manner, a rotating handle is provided at the second end of the screw rod.

[0023] An auxiliary device for butt welding of steel pipes provided by an embodiment of the present application. The movable fixture and the fixed fixture are oppositely arranged. By arranging a movable connecting frame on the side of the movable fixture facing away from the fixed fixture, the movable connecting frame is rotatably connected to a screw rod, and a nut is screwed on the outer wall of the screw rod. One end of the fixed connecting frame is fixedly connected to the outer wall of the nut, and the other end is connected to the side of the fixed fixture facing away from the movable fixture. When the screw rod is rotated clockwise, the screw rod drives the movable fixture to move relative to the fixed connecting frame towards the fixed fixture side, so that the movable fixture and the fixed fixture clamp the steel pipe, positioning and fixing the two steel pipes to be welded. The structure of the present application is simple and convenient to use, and can quickly clamp and fix the two steel pipes to be welded, ensuring the welding quality. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the auxiliary device for butt welding of steel pipes provided by the present application;

[0025] Figure 2 is a perspective view of the auxiliary device for butt welding of steel pipes;

[0026] Figure 3 is a schematic diagram of the magnetic body and its connection structure;

[0027] Figure 4 is a schematic diagram of the compensating member and its connection structure.

[0028] Description of the Reference Numerals:

[0029] 10 - screw rod; 20 - movable connecting frame; 30 - fixed connecting frame; 40 - movable fixture; 50 - fixed fixture; 60 - nut; 70 - magnetic body; 80 - compensating member; 90 - rotating handle;

[0030] 21 - transverse rod body; 22 - longitudinal rod body; 23 - limiting groove; 31 - first plate body; 32 - second plate body; 33 - third plate body; 34 - limiting rod; 41 - first fixture; 42 - second fixture; 51 - third fixture; 52 - fourth fixture; 81 - cushion block; 82 - plug rod. Detailed Embodiments

[0031] To enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0032] Steel pipe butt welding has various uses, including but not limited to the following aspects:

[0033] Building and structural engineering: Used for building steel structure frameworks, support columns, handrails, etc. of buildings.

[0034] Pipeline systems: In industrial and civil water supply, gas supply, heat supply and other pipeline systems, connecting steel pipes of different lengths to form a complete conveying pipeline.

[0035] Oil and gas industry: Connecting oil and gas pipelines, and constructing related facilities for oil wells and gas wells.

[0036] Chemical industry: Used for building pipeline networks in chemical plants to transport various chemical substances.

[0037] Bridge construction: As part of the bridge structure, such as handrails, bridge supports, etc.

[0038] Mechanical manufacturing: Manufacturing components such as frameworks, brackets and pipelines of various mechanical equipment.

[0039] Electric power industry: Used for the construction of transmission line towers and the connection of pipelines inside power stations.

[0040] In short, steel pipe butt welding plays an important role in many fields. By connecting steel pipes together, it meets the requirements of different engineering projects for structural strength and pipeline continuity.

[0041] Traditional steel pipe butt welding operation requires experienced welders to manually adjust, which is time-consuming and laborious, and is prone to welding defects and deformation. Moreover, the structures of some steel pipe butt welding jigs are relatively complex, with high costs and inconvenient use. The auxiliary device for steel pipe butt welding provided in this application has a screw 10 rotatably connected to a moving jig 40 through a moving connecting frame 20. A nut 60 is screwed on the outer wall of the screw 10. One end of a fixed connecting frame 30 is connected to the screw 10, and the other end is connected to a fixed jig 50. When the screw 10 is rotated clockwise, the screw 10 drives the moving jig 40 to move relative to the fixed connecting frame 30 towards the fixed jig 50 side, so that the moving jig 40 and the fixed jig 50 clamp the steel pipe, positioning and fixing the two steel pipes to be welded. The structure of this application is simple and convenient to use, can achieve fast, accurate and efficient butt welding of steel pipes, improves the welding quality and efficiency, and provides strong support for steel pipe welding operations.

[0042] The following will describe in detail the specific structure of the auxiliary device for steel pipe butt welding provided in this application with reference to the accompanying drawings.

[0043] Refer to Figures 1 - 4 As shown in the figure, the embodiment of this application provides an auxiliary device for steel pipe butt welding, including a screw 10, a moving connecting frame 20, a fixed connecting frame 30, a moving jig 40 and a fixed jig 50;

[0044] The moving jig 40 and the fixed jig 50 can be arc-shaped clamping plates or L-shaped clamping plates. Both the moving jig 40 and the fixed jig 50 have a certain strength. The moving jig 40 and the fixed jig 50 are arranged opposite to each other, and the moving jig 40 and the fixed jig 50 clamp the two steel pipes to be butted and welded;

[0045] The moving connecting frame 20 is arranged on the side of the moving jig 40 facing away from the fixed jig 50, and the first end of the screw 10 is rotatably connected to the moving connecting frame 20; a nut 60 is screwed on the outer wall of the screw 10. The first end of the fixed connecting frame 30 is fixedly connected to the outer wall of the nut 60, and the second end of the fixed connecting frame 30 is fixedly connected to the side of the fixed jig 50 facing away from the moving jig 40.

[0046] As Figure 1 shown, both the moving jig 40 and the fixed jig 50 are L-shaped clamping plates. The moving jig 40 and the fixed jig 50 can form a square cylinder, and their clamping surfaces are arranged opposite to each other. The moving connecting frame 20 is arranged on the right side of the moving jig 40. The left end of the screw 10 is rotatably connected to the moving jig 40, and the screw 10 is inclined 45° relative to the moving jig 40, that is, the axis of the screw 10 is parallel to the diagonal of the square cylinder; the left end of the fixed connecting frame 30 is fixedly connected to the left side of the fixed jig 50, and the right end of the fixed connecting frame 30 is connected to the outer wall of the nut 60;

[0047] When holding the fixed connecting frame 30 and rotating the screw 10 clockwise, the screw 10 drives the movable connecting frame 20 and the movable fixture 40 to move leftward relative to the nut 60, the fixed connecting frame 30 and the fixed fixture 50, so that the movable fixture 40 and the fixed fixture 50 clamp two steel pipes to be butt-welded; conversely, when holding the fixed connecting frame 30 and rotating the screw 10 counterclockwise, the movable fixture 40 and the fixed fixture 50 separate to release the steel pipes that have completed butt-welding.

[0048] The advantages of the present utility model are that by organically combining the fixed structure and the rotating structure, efficient and precise control of the butt-welding of steel pipes is achieved. The operator can easily control the welding process by rotating the screw 10, and the movable fixture 40 can precisely clamp the steel pipes to ensure the welding quality. At the same time, the device has a simple structure, convenient operation and good durability, can meet the welding requirements of various steel pipes with different sizes and types, and has high practical value.

[0049] Refer to Figure 2 As shown, in some embodiments, the movable fixture 40 includes a first fixture 41 and a second fixture 42, and a first welding gap is formed between the first fixture 41 and the second fixture 42; the fixed fixture 50 includes a third fixture 51 and a fourth fixture 52, and a second welding gap is formed between the third fixture 51 and the fourth fixture 52, and the first welding gap corresponds to the second welding gap;

[0050] The first fixture 41, the second fixture 42, the third fixture 51 and the fourth fixture 52 are all L-shaped metal clamping plates. The first fixture 41 and the third fixture 51 are arranged oppositely, the second fixture 42 and the fourth fixture 52 are arranged oppositely, and the width of the first welding gap and the second welding gap can be 5 cm to meet the requirements of the circumferential butt-welding of two steel pipes.

[0051] The movable connecting frame 20 is connected to the first fixture 41 and the second fixture 42, and the fixed connecting frame 30 is connected to the third fixture 51 and the fourth fixture 52.

[0052] During use, the first fixture 41 and the third fixture 51 clamp the first steel pipe, the second fixture 42 and the fourth fixture 52 clamp the second steel pipe, and the butt-welding position of the first steel pipe and the second steel pipe is located within the first welding gap and the second welding gap, so as to avoid the fixture blocking the welding position of the steel pipe and enable circumferential welding.

[0053] In some embodiments, the movable connecting frame 20 includes a transverse rod body 21 and a longitudinal rod body 22;

[0054] The middle of the transverse rod body 21 is rotatably connected to the first end of the screw 10, and longitudinal rod bodies 22 are provided at both ends of the transverse rod body 21;

[0055] The first ends of the two longitudinal rods 22 are respectively fixedly connected to the outer walls of the first clamp 41 and the second clamp 42, and the second ends of the two longitudinal rods 22 are respectively fixedly connected to both ends of the transverse rod 21.

[0056] The transverse rod 21 and the two longitudinal rods 22 form a concave moving connection frame 20. The left end of the screw 10 is rotatably connected to the middle of the transverse rod 21. The left ends of the two longitudinal rods 22 are respectively connected to the right sides of the first clamp 41 and the second clamp 42, and the two longitudinal rods 22 are arranged at an inclination of 45° relative to the first clamp 41 and the second clamp 42.

[0057] In some embodiments, the fixed connection frame 30 includes a first plate body 31, a second plate body 32 and a third plate body 33, and the first plate body 31, the second plate body 32 and the third plate body 33 are sequentially connected from left to right;

[0058] The outer walls of the third clamp 51 and the fourth clamp 52 are both provided with the first plate body 31. The second ends of the two first plate bodies 31 are respectively connected to the first ends of the two second plate bodies 32. The second ends of the two second plate bodies 32 are respectively connected to the first ends of the two third plate bodies 33. The second ends of the two third plate bodies 33 are both connected to the outer wall of the nut 60.

[0059] The first plate body 31 is a vertical plate body, and the first plate body 31 is fixedly connected to the outer wall of the third clamp 51 or the fourth clamp 52. The second plate body 32 is arranged at an inclination of 45° and is parallel to the longitudinal rod 22, and the two second plate bodies 32 are parallel to each other. The two third plate bodies 33 are arranged in a V shape, and the moving direction of the third plate body 33 is inclined towards the screw 10 side.

[0060] Refer to Figure 2 As shown, in some embodiments, the two second plate bodies 32 correspond to the two longitudinal rods 22 in position, and the second plate body 32 is parallel to the two longitudinal rods 22;

[0061] Limit grooves 23 are provided in the middle of the two longitudinal rods 22. The extending direction of the limit grooves 23 is parallel to the axis of the screw 10. Limit rods 34 are provided on the outer walls of the two second plate bodies 32. The limit rods 34 are vertically arranged rod bodies, and the two limit rods 34 are respectively inserted into the two limit grooves 23.

[0062] During use, when the screw rod 10 is rotated clockwise, since the limiting rod 34 is inserted into the limiting groove 23, the movable connecting frame 20 and the fixed connecting frame 30 cannot rotate relative to each other. Then, the screw rod 10 drives the movable connecting frame 20 and the movable fixture 40 to move leftward relative to the nut 60, the fixed connecting frame 30 and the fixed fixture 50. The limiting groove 23 moves leftward relative to the limiting rod 34, so that the first fixture 41 and the third fixture 51 clamp the first steel pipe, and the second fixture 42 and the fourth fixture 52 clamp the second steel pipe; conversely, when the screw rod 10 is rotated counterclockwise, the screw rod 10 drives the movable connecting frame 20 and the movable fixture 40 to move rightward relative to the nut 60, the fixed connecting frame 30 and the fixed fixture 50, separating the first fixture 41 and the third fixture 51, and separating the second fixture 42 and the fourth fixture 52, releasing the steel pipe that has completed butt welding.

[0063] Referring to Figure 3 As shown, in some embodiments, magnetic bodies 70 are inlaid on the inner walls of the movable fixture 40 and the fixed fixture 50. The magnetic bodies 70 can be magnets, and the magnetic bodies 70 attract the steel pipe to facilitate fixing the steel pipe.

[0064] Referring to Figure 4 As shown, in some embodiments, when the fixed fixture 50 and the movable fixture 40 are in contact, they form a square cylinder. When the outer diameter of the steel pipe is smaller than the inner diameter of the square cylinder, this auxiliary device cannot fix this steel pipe. Therefore, a compensating member 80 is provided on the side of the fixed fixture 50 facing the movable fixture 40. The compensating member 80 can be a semi-circular compensating block, and the compensating block can attract the magnetic body 70 to be fixed. When the movable fixture 40 and the fixed fixture 50 approach, the compensating member 80 and the movable fixture 40 clamp the steel pipe, thus facilitating the fixing of small-diameter steel pipes.

[0065] In some embodiments, the compensating member 80 includes a cushion block 81 and an inserting rod 82. The cushion block 81 can be a semi-cylindrical body, and its cross-section is semi-circular;

[0066] The fixed fixture 50 is provided with an inserting hole, and the inserting hole is arranged at an inclination of 45° relative to the fixed fixture 50. The right end of the inserting rod 82 is fixedly connected to the middle of the flat outer wall of the cushion block 81. The inserting rod 82 is inserted into the inserting hole to fix the cushion block 81 in the fixed fixture 50. When the movable fixture 40 and the fixed fixture 50 approach, the curved surface top of the cushion block 81 and the movable fixture 40 clamp the steel pipe.

[0067] Referring to Figure 1 and Figure 2 As shown, in some embodiments, a rotating handle 90 is provided at the right end of the screw rod 10, which facilitates rotating the screw rod 10 and facilitates the use of this auxiliary device.

[0068] The auxiliary device for butt welding of steel pipes provided by this application can achieve efficient and precise control of the butt welding of steel pipes. The operator can easily control the welding process by rotating the handle 90, while the moving fixture 40 can precisely clamp and move the steel pipe to ensure the welding quality. At the same time, the device has a simple structure, convenient operation, and good durability, can meet the welding requirements of various steel pipes with different sizes and types, and has high practical value.

[0069] It is easily understandable that those skilled in the art can combine, split, and reorganize the embodiments of this application based on several embodiments provided by this application to obtain other embodiments, and these embodiments do not exceed the protection scope of this application.

[0070] The above specific implementation manners further elaborate on the purpose, technical solutions, and beneficial effects of the embodiments of this application. It should be understood that the above is only the specific implementation manners of the embodiments of this application and is not used to limit the protection scope of the embodiments of this application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of this application shall be included in the protection scope of the embodiments of this application.

Claims

1. An auxiliary device for butt welding of steel pipes, characterized in that: It comprises a screw rod (10), a movable connecting frame (20), a fixed connecting frame (30), a movable clamp (40) and a fixed clamp (50); The movable fixture (40) and the fixed fixture (50) are arranged opposite to each other; The movable connecting frame (20) is arranged on the side of the movable clamp (40) facing away from the fixed clamp (50), and the first end of the screw rod (10) is rotatably connected to the movable connecting frame (20); A nut (60) is threadedly connected to the outer wall of the screw rod (10), a first end of the fixed connecting frame (30) is fixedly connected to the outer wall of the nut (60), and a second end of the fixed connecting frame (30) is fixedly connected to the side of the fixed fixture (50) facing away from the movable fixture (40).

2. The auxiliary device for butt welding of steel pipes according to claim 1, characterized in that: The movable clamp (40) comprises a first clamp (41) and a second clamp (42), and a first welding gap is formed between the first clamp (41) and the second clamp (42); the fixed clamp (50) comprises a third clamp (51) and a fourth clamp (52), and a second welding gap is formed between the third clamp (51) and the fourth clamp (52), and the first welding gap corresponds to the second welding gap; The movable connecting frame (20) is connected to the first clamp (41) and the second clamp (42), and the fixed connecting frame (30) is connected to the third clamp (51) and the fourth clamp (52).

3. The auxiliary device for butt welding of steel pipes according to claim 2, characterized in that: The movable connecting frame (20) comprises a transverse rod body (21) and a longitudinal rod body (22); The middle portion of the transverse rod body (21) is rotatably connected to the first end of the screw rod (10), and both ends of the transverse rod body (21) are provided with the longitudinal rod bodies (22); The first ends of the two longitudinal rods (22) are respectively fixedly connected to the outer walls of the first clamp (41) and the second clamp (42), and the second ends of the two longitudinal rods (22) are respectively fixedly connected to the two ends of the transverse rod (21).

4. The auxiliary device for butt welding of steel pipes according to claim 3, characterized in that: The fixed connection frame (30) comprises a first plate body (31), a second plate body (32) and a third plate body (33); The outer walls of the third clamp (51) and the fourth clamp (52) are both provided with the first plate body (31), the second ends of the two first plate bodies (31) are respectively connected to the first ends of the two second plate bodies (32), the second ends of the two second plate bodies (32) are respectively connected to the first ends of the two third plate bodies (33), and the second ends of the two third plate bodies (33) are both connected to the outer wall of the nut (60).

5. The auxiliary device for butt welding of steel pipes according to claim 4, characterized in that: The two second plates (32) correspond to the two longitudinal rods (22); The middle parts of the two longitudinal rod bodies (22) are each provided with a limiting groove (23), the outer walls of the two second plate bodies (32) are each provided with a limiting rod (34), and the two limiting rods (34) are respectively plugged into the two limiting grooves (23).

6. The auxiliary device for butt welding of steel pipes according to claim 1, characterized in that: The inner walls of the movable clamp (40) and the fixed clamp (50) are both inlaid with magnetic bodies (70), and the magnetic bodies (70) and the steel pipe attract each other.

7. The auxiliary device for butt welding of steel pipes according to claim 1, characterized in that: A compensating piece (80) is provided on the side of the fixed fixture (50) facing the movable fixture (40), and the compensating piece (80) and the movable fixture (40) support the steel pipe.

8. The auxiliary device for butt welding of steel pipes according to claim 7, characterized in that: The compensating member (80) comprises a cushion block (81) and an insert rod (82); The fixed fixture (50) is provided with a plug hole, one end of the plug rod (82) is fixedly connected to the cushion block (81), and the other end is plugged into the plug hole, and the cushion block (81) and the movable fixture (40) hold the steel pipe.

9. The auxiliary device for butt welding of steel pipes according to any one of claims 1 to 8, characterized in that: The second end of the screw rod (10) is provided with a rotating handle (90).

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