Large-diameter steel pipe welding robot

Abstract

The utility model provides a large-diameter steel pipe welding robot, and relates to the technical field of large-diameter steel pipes. The large-diameter steel pipe welding robot comprises a base, a fixing mechanism is arranged at the top of the base, a steel pipe is arranged at the top of the fixing mechanism, a two-way screw rod is arranged on one side of the top of the base, a first forward and reverse motor is arranged at one end of the two-way screw rod, and the output end of the first forward and reverse motor is fixedly connected with the two-way screw rod; the two ends of the outer side of the two-way screw are both in threaded connection with mounting frames, U-shaped sliding rods are arranged on the two sides of the two-way screw, and the two U-shaped sliding rods both penetrate through the two mounting frames and are in sliding connection with the two mounting frames. According to the large-diameter steel pipe welding robot, the output end of the first forward and reverse motor drives the two-way screw to rotate, the two-way screw is in threaded connection with the two mounting frames, the two mounting frames slide on the two U-shaped sliding rods, the two mounting frames drive the two limiting rollers to extrude a steel pipe, a welding seam can be small, and the situation that the welding quality of the steel pipe is affected is avoided.

Description

Technical Field

[0001] The utility model relates to a welding robot, in particular to a large-diameter steel pipe welding robot, belonging to the technical field of large-diameter steel pipes. Background Art

[0002] Large-diameter steel pipes generally refer to those with a diameter of 325mm or larger. They are primarily categorized as seamless and seamed. Seamed pipes are made by welding steel plates together after bending. Currently, large-diameter steel pipes are welded using automated surface welding, while inner ring welding requires manual welding because the welding system cannot penetrate deep into the inner ring.

[0003] The automatic welding device for large-diameter steel pipe production, currently published as CN212470266U, includes a base, on which is provided a fixing mechanism for fixing the steel pipe. The fixing mechanism includes a left fixed roller and a right fixed roller arranged in parallel, and the left fixed roller and the right fixed roller are arranged at an interval. The left fixed roller and the right fixed roller are rotatably set on the base, and the base is provided with an automatic welding mechanism.

[0004] Although the above scheme has many benefits, it also has the following disadvantages: 1. If the welded pipe is not squeezed, the weld seam will be large, and the welding quality of the steel pipe may be affected when the welding gun is used to weld the steel pipe; 2. Since steel pipes are also divided into many different diameters, this device cannot meet the requirements of welding steel pipes with slightly smaller diameters. Therefore, a large-diameter steel pipe welding robot is designed to solve the above-mentioned shortcomings. Utility Model Content

[0005] (1) Technical problems solved

[0006] The purpose of the present utility model is to provide a large-diameter steel pipe welding robot in order to solve the above-mentioned problem, so as to solve the problem that in the prior art, if the pipe to be welded is not squeezed, the welding of the steel pipe by the welding gun may be affected; since steel pipes are divided into many different diameters, this device cannot meet the requirements of welding steel pipes with small diameters.

[0007] (2) Technical solution

[0008] The utility model is realized through the following technical scheme: a large-diameter steel pipe welding robot includes a base, a fixing mechanism is provided on the top of the base, a steel pipe is provided on the top of the fixing mechanism, a bidirectional screw is provided on one side of the top of the base, one end of the bidirectional screw is provided with a first forward and reverse motor, the output end of the first forward and reverse motor is fixedly connected to the bidirectional screw, both ends of the outer side of the bidirectional screw are threadedly connected to the mounting bracket, and two U-shaped sliding rods are provided on both sides of the bidirectional screw, and limiting rollers are installed inside the mounting bracket, and the two limiting rollers are in contact with the steel pipe, one of the mounting brackets is provided with a fixing plate on the outside, and hydraulic rods are fixedly connected to the top of the base, and two welding robots are provided at one end of the steel pipe, and the two welding robots are arranged opposite to each other up and down, and an adjustment component is provided between the two welding robots and the fixing plate.

[0009] Preferably, a mounting groove is provided on the front side of the base, the first forward and reverse motor is arranged inside the mounting groove, the first forward and reverse motor is fixedly connected to the base, and the mounting groove is provided to facilitate the installation of the first forward and reverse motor.

[0010] Preferably, both ends of the outer side of the bidirectional screw are rotatably connected to support blocks, and the two support blocks are fixedly connected to the base. The arrangement of the two support blocks provides rotational support for the bidirectional screw.

[0011] Preferably, the adjustment assembly includes a first convex groove and an L-shaped rod, the first convex groove is opened at the top of the fixed plate, the L-shaped rod is arranged on one side of the top of the fixed plate, and the bottom of the L-shaped rod is fixedly connected with a first protrusion, and the first protrusion is arranged inside the first convex groove and is slidably connected to the fixed plate.

[0012] Preferably, the adjustment assembly also includes a threaded rod, which is arranged on one side of the fixed plate, one end of the threaded rod passes through the fixed plate and is rotatably connected to the fixed plate, the threaded rod is arranged inside the first convex groove, the first convex block is threadedly connected to the outside of the threaded rod, and a second forward and reverse motor is fixedly connected to one side of the fixed plate, and the second forward and reverse motor is fixedly connected to the threaded rod.

[0013] Preferably, a U-shaped rod is fixedly connected to the top of one end of the L-shaped rod, and both ends of the U-shaped rod are fixedly connected to mounting plates, and the two welding robots are fixedly connected to the two mounting plates respectively.

[0014] Preferably, the bottom of the L-shaped rod is fixedly connected to a telescopic rod, a second convex groove is provided on the top of the base, the bottom of the telescopic rod is fixedly connected to a second convex block, the second convex block is arranged inside the second convex groove and is slidably connected to the base, and the telescopic rod is arranged so that the L-shaped rod can be raised and lowered.

[0015] The utility model provides a large-diameter steel pipe welding robot, which has the following beneficial effects:

[0016] 1. The large-diameter steel pipe welding robot has a first forward and reverse motor output end that drives a bidirectional screw to rotate. The bidirectional screw is threadedly connected to two mounting brackets. The two mounting brackets slide on two U-shaped slide bars. The two mounting brackets drive two limiting rollers to squeeze the steel pipe, which can achieve a smaller welding seam and avoid affecting the quality of steel pipe welding.

[0017] 2. When the large-diameter steel pipe welding robot places a steel pipe with a slightly smaller diameter on the fixing mechanism, the two hydraulic rods are activated to adjust the upper and lower positions of the fixing plate. The fixing plate can adjust the upper and lower positions of the two welding robots through the first protrusion, L-shaped rod, U-shaped rod and two mounting plates so that the welding robots can perform welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a right side view of the utility model;

[0020] Figure 3 This is a schematic diagram of the mounting frame structure of the utility model;

[0021] Figure 4 This is a cross-sectional view of the fixing plate of the present invention.

[0022]

Main component symbol description

[0023] 1. Base; 2. Fixing mechanism; 3. Bidirectional screw; 4. Support block; 5. Mounting frame; 6. Limit roller; 7. Mounting slot; 8. Fixing plate; 9. Hydraulic rod; 11. First convex groove; 12. L-shaped rod; 13. Telescopic rod; 14. Second convex groove; 15. U-shaped rod; 16. Mounting plate; 17. Welding robot; 18. Threaded rod; 19. First convex block; 31. U-shaped slide bar. DETAILED DESCRIPTION

[0024] The embodiment of the utility model provides a large-diameter steel pipe welding robot.

[0025] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4, including a base 1, a fixing mechanism 2 is provided on the top of the base 1, a steel pipe is provided on the top of the fixing mechanism 2, a bidirectional screw 3 is provided on one side of the top of the base 1, and both ends of the outer side of the bidirectional screw 3 are rotatably connected to support blocks 4, and the two support blocks 4 are fixedly connected to the base 1, and one end of the bidirectional screw 3 is provided with a first forward and reverse motor, and a mounting groove 7 is provided on the front side of the base 1, and the first forward and reverse motor is arranged inside the mounting groove 7, and the first forward and reverse motor is fixedly connected to the base 1, and the output end of the first forward and reverse motor is fixedly connected to the bidirectional screw 3, and both ends of the outer side of the bidirectional screw 3 are threadedly connected to the mounting bracket 5, and both sides of the bidirectional screw 3 Both are provided with a U-shaped slide bar 31, and the two U-shaped slide bars 31 pass through the two mounting frames 5 and are slidably connected to the two mounting frames 5. The two U-shaped slide bars 31 are fixedly connected to the base 1, and a limiting roller 6 is installed inside the mounting frame 5. The two limiting rollers 6 are in contact with the steel pipe. A fixed plate 8 is provided on the outside of one of the mounting frames 5, and hydraulic rods 9 are fixedly connected to the two sides of the bottom of the fixed plate 8. The hydraulic rod 9 is fixedly connected to the top of the base 1. Two welding robots 17 are provided at one end of the steel pipe. The two welding robots 17 are arranged opposite to each other up and down, and an adjustment component is provided between the two welding robots 17 and the fixed plate 8.

[0026] Specifically, the welded steel pipe is placed on the fixing mechanism 2. As for the structural technology of the fixing mechanism 2, the technology of the automatic welding device for producing large-diameter steel pipes with publication number CN212470266U is adopted.

[0027] Before welding, by starting the first forward and reverse motor, there is no specific limitation on the model of the first forward and reverse motor, which is subject to the adaptation equipment. The output end of the first forward and reverse motor drives the bidirectional screw 3 to rotate, and the bidirectional screw 3 is threadedly connected to the two mounting brackets 5. The two mounting brackets 5 slide on the two U-shaped slide bars 31. The two mounting brackets 5 drive the two limiting rollers 6 to squeeze the steel pipe, which can achieve a smaller welding seam and avoid affecting the quality of steel pipe welding.

[0028] Please refer again Figure 1 、 Figure 2 、 Figure 3 and Figure 4The adjusting assembly includes a first convex groove 11 and an L-shaped rod 12. The first convex groove 11 is opened at the top of the fixing plate 8. The L-shaped rod 12 is arranged on one side of the top of the fixing plate 8. The bottom of the L-shaped rod 12 is fixedly connected with a first protrusion 19. The first protrusion 19 is arranged inside the first convex groove 11 and is slidably connected to the fixing plate 8. The adjusting assembly also includes a threaded rod 18. The threaded rod 18 is arranged on one side of the fixing plate 8. One end of the threaded rod 18 passes through the fixing plate 8 and is rotatably connected to the fixing plate 8. The threaded rod 18 is arranged inside the first convex groove 11. The first protrusion 19 is threadedly connected to the threaded rod 18. On the outside of the threaded rod 18, a second forward and reverse motor is fixedly connected to one side of the fixed plate 8, and the second forward and reverse motor is fixedly connected to the threaded rod 18. The top of one end of the L-shaped rod 12 is fixedly connected to the U-shaped rod 15, and both ends of the U-shaped rod 15 are fixedly connected to the mounting plates 16. The two welding robots 17 are respectively fixedly connected to the two mounting plates 16. The bottom of the L-shaped rod 12 is fixedly connected to the telescopic rod 13. A second convex groove 14 is provided at the top of the base 1. The bottom of the telescopic rod 13 is fixedly connected to a second convex block, and the second convex block is arranged inside the second convex groove 14 and is slidably connected to the base 1.

[0029] Specifically, after a steel pipe with a slightly smaller diameter is placed on the fixing mechanism 2, the two hydraulic rods 9 are started to adjust the upper and lower positions of the fixing plate 8. The fixing plate 8 can adjust the upper and lower positions of the two welding robots 17 through the first protrusion 19, the L-shaped rod 12, the U-shaped rod 15 and the two mounting plates 16 so that the welding robots 17 can perform welding work.

[0030] As for the technology of the welding robot 17, the technology of a flange accessory and steel pipe welding machine with publication number CN220943951U can be adopted.

[0031] Start the second forward and reverse motor. There is no specific limitation on the model of the second forward and reverse motor, which is subject to the adapted equipment. The output end of the second forward and reverse motor drives the threaded rod 18 to rotate. The threaded rod 18 is threadedly connected to the first protrusion 19. The first protrusion 19 drives the L-shaped rod 12 to move. The L-shaped rod 12 drives the two welding robots 17 to move toward the steel pipe through the U-shaped rod 15 and the two mounting plates 16. The two welding robots 17 can perform welding work on the outside and inside of the steel pipe respectively.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A large-diameter steel pipe welding robot, comprising a base (1), characterized in that: The top of the base (1) is provided with a fixing mechanism (2), the top of the fixing mechanism (2) is provided with a steel pipe, a bidirectional screw (3) is provided on one side of the top of the base (1), one end of the bidirectional screw (3) is provided with a first forward and reverse motor, the output end of the first forward and reverse motor is fixedly connected to the bidirectional screw (3), both ends of the outer side of the bidirectional screw (3) are threadedly connected to the mounting frame (5), both sides of the bidirectional screw (3) are provided with a U-shaped slide bar (31), the two U-shaped slide bars (31) both pass through the two mounting frames (5) and are slidably connected to the two mounting frames (5), and the two U-shaped slide bars (31) are connected to the mounting frames (5). The sliding rods (31) are fixedly connected to the base (1), and a limiting roller (6) is installed inside the mounting frame (5). The two limiting rollers (6) are in contact with the steel pipe. A fixed plate (8) is provided on the outside of one of the mounting frames (5). Both sides of the bottom of the fixed plate (8) are fixedly connected with hydraulic rods (9). The hydraulic rods (9) are fixedly connected to the top of the base (1). Two welding robots (17) are provided at one end of the steel pipe. The two welding robots (17) are arranged opposite to each other up and down, and an adjustment component is provided between the two welding robots (17) and the fixed plate (8).

2. The large-diameter steel pipe welding robot according to claim 1, characterized in that: A mounting groove (7) is provided on the front side of the base (1), the first forward and reverse motor is arranged inside the mounting groove (7), and the first forward and reverse motor is fixedly connected to the base (1).

3. The large-diameter steel pipe welding robot according to claim 1, characterized in that: Both ends of the outer sides of the bidirectional screw (3) are rotatably connected to support blocks (4), and both support blocks (4) are fixedly connected to the base (1).

4. The large-diameter steel pipe welding robot according to claim 1, characterized in that: The adjustment assembly comprises a first convex groove (11) and an L-shaped rod (12), wherein the first convex groove (11) is opened at the top of the fixed plate (8), the L-shaped rod (12) is arranged on one side of the top of the fixed plate (8), and the bottom of the L-shaped rod (12) is fixedly connected with a first convex block (19), and the first convex block (19) is arranged inside the first convex groove (11) and is slidably connected to the fixed plate (8).

5. The large-diameter steel pipe welding robot according to claim 4, characterized in that: The adjustment assembly further comprises a threaded rod (18), the threaded rod (18) being arranged on one side of the fixed plate (8), one end of the threaded rod (18) passing through the fixed plate (8) and being rotatably connected to the fixed plate (8), the threaded rod (18) being arranged inside the first convex groove (11), the first convex block (19) being threadedly connected to the outside of the threaded rod (18), a second forward and reverse motor being fixedly connected to one side of the fixed plate (8), and the second forward and reverse motor being fixedly connected to the threaded rod (18).

6. The large-diameter steel pipe welding robot according to claim 4, characterized in that: The top of one end of the L-shaped rod (12) is fixedly connected to a U-shaped rod (15), both ends of the U-shaped rod (15) are fixedly connected to mounting plates (16), and the two welding robots (17) are fixedly connected to the two mounting plates (16) respectively.

7. The large-diameter steel pipe welding robot according to claim 4, characterized in that: The bottom of the L-shaped rod (12) is fixedly connected to a telescopic rod (13), the top of the base (1) is provided with a second convex groove (14), the bottom of the telescopic rod (13) is fixedly connected to a second convex block, and the second convex block is arranged inside the second convex groove (14) and is slidably connected to the base (1).

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