Welding device for large pipeline

Abstract

The utility model discloses a welding device for a large pipeline, and relates to the field of pipeline welding, the welding device comprises a welding machine and a welding gun, and further comprises a moving frame capable of moving in the pipeline, the welding machine is arranged on the moving frame, a fixed frame is arranged on the moving frame, a rotating frame is rotationally connected to the fixed frame, and the welding gun is arranged on the rotating frame. The rotating axis of the rotating frame is arranged in the axis direction of the pipeline, and the welding gun is installed on the rotating frame. A power part for driving the rotating frame to rotate is arranged on the fixed frame; by means of rotation of the welding gun and movement of the movable frame, automatic welding of the interior of the pipeline can be basically achieved, and therefore the pipeline welding efficiency and welding quality are improved.

Description

Technical Field

[0001] The present application relates to the field of pipeline welding, and in particular to a welding device for large pipelines. Background Art

[0002] At present, when welding large pipelines, the main working process is to first place the pipeline on a roller frame, and then use the roller frame to drive the pipeline to rotate. At the same time, use a welding gun to weld the outer surface of the pipeline. In order to enhance the stability of the pipeline, the inside of the pipeline also needs to be welded.

[0003] At present, the main method for welding inside a pipeline is that an operator carries a welding machine into the pipeline, and then the operator holds a welding gun to weld the inside of the pipeline. However, when the operator enters the pipeline to weld, the light and space inside the pipeline are limited, which affects the operator's operation, thereby reducing the welding efficiency and welding quality. Utility Model Content

[0004] In order to improve the problem that operators entering into pipelines to weld pipelines affects the welding efficiency and quality of the pipelines, the present application provides a welding device for large pipelines.

[0005] The present application provides a large-scale pipeline welding device, which adopts the following technical solution:

[0006] A welding device for a large pipeline comprises a welding machine and a welding gun, and also comprises a mobile frame which can move inside the pipeline, wherein the welding machine is arranged on the mobile frame, a fixed frame is arranged on the mobile frame, a rotating frame is rotatably connected to the fixed frame, a rotating axis of the rotating frame is arranged along the pipeline axis direction, and the welding gun is installed on the rotating frame; and a power component for driving the rotating frame to rotate is arranged on the fixed frame.

[0007] By adopting the above technical solution, when in use, the welding machine is installed on the mobile frame, and the welding gun is installed on the rotating frame, and then the position of the mobile frame is adjusted so that the rotating axis of the rotating frame is located on the central axis of the pipeline, and the welding gun can be close to the position of the pipeline weld, and then the power component is used to drive the rotating frame to rotate, so that the inside of the pipeline can be welded; the device can basically realize automatic welding of the inside of the pipeline by rotating the welding gun and moving the mobile frame, thereby improving the pipeline welding efficiency and welding quality.

[0008] Optionally, the fixed frame is slidably connected to the movable frame along a vertical direction, and the movable frame is provided with a driving member for driving the fixed frame to slide.

[0009] By adopting the above technical solution, the height of the fixing frame can be adjusted, thereby adjusting the height of the welding gun, thereby being able to adapt to pipes of different diameters, so that the welding gun can be close to the weld position inside the pipe.

[0010] Optionally, the driving member includes a cylinder.

[0011] By adopting the above technical solution, when adjusting the height of the welding gun, it is sufficient to open the cylinder; the driving component has a simple structure and is easy to operate.

[0012] Optionally, two leveling rods are slidably connected to the movable frame in a horizontal direction, and the two leveling rods can move closer to or farther away from each other. The leveling rods slide to contact the inner wall of the pipe, and the movable frame is provided with a driving component for driving the two leveling rods to move closer to or farther away from each other.

[0013] By adopting the above technical solution, the driving component can adjust the distance between the two leveling rods, so that when the mobile frame is positioned, the driving component can be used to adjust the distance between the two leveling rods so that both leveling rods are in contact with the inner wall of the pipe, so that the rotation axis of the rotating frame and the central axis of the pipe can coincide with each other. When the welding gun rotates with the rotating frame, the internal circumferential welds of the pipe can be welded in sequence.

[0014] Optionally, the driving assembly includes a handle and a bidirectional screw, the bidirectional screw is rotatably connected to the movable frame, the bidirectional screw rotates to drive the two leveling rods to move closer to or away from each other, and the handle is used to drive the bidirectional screw to rotate.

[0015] By adopting the above technical solution, when adjusting the distance between the two leveling rods, the handle can be turned to drive the bidirectional screw to rotate; the bidirectional screw in the drive assembly has a certain limiting ability, which can limit the leveling rod to a certain position, and the bidirectional screw can drive the two leveling rods to move synchronously, so as to ensure the center position of the mobile frame.

[0016] Optionally, the mobile frame is electrically driven and can be moved by remote control.

[0017] By adopting the above technical solution, it is convenient to control the movement of the mobile frame.

[0018] Optionally, a camera for photographing the position of the pipeline weld is installed on the rotating frame.

[0019] By adopting the above technical solution, it is convenient to move the movable frame to a suitable position.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] 1. This application utilizes the rotation of the welding gun and the movement of the mobile frame to basically realize the automated welding of the inside of the pipeline, thereby improving the pipeline welding efficiency and welding quality;

[0022] 2. The present application drives the welding gun to move vertically through a fixed frame, and uses two leveling rods to adjust the position of the movable frame, so that the welding gun can be close to the internal weld position of pipes of different sizes, and the leveling rods can make the rotation axis of the welding gun coincide with the central axis of the pipe, so that the welding gun can better weld inside the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a large-scale pipeline welding device disclosed in the present application, which is applied to the pipeline;

[0024] Figure 2 It is a schematic diagram of the overall structure of a large-scale pipeline welding device disclosed in the present application.

[0025] Description of reference numerals:

[0026] 1. Mobile frame; 2. Welding machine; 3. Welding gun; 4. Fixed frame; 5. Cylinder; 6. Rotating frame; 7. Rotating block; 8. Rotating rod; 9. Fixed block; 10. Card sleeve; 11. Camera; 12. Motor; 13. Leveling rod; 14. Bidirectional screw; 15. Handle; 16. Roller. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-2 This application is described in further detail.

[0028] The present application discloses a welding device for large pipelines.

[0029] Reference Figure 1 and Figure 2 A welding device for a large pipeline includes a mobile frame 1, a welding machine 2 and a welding gun 3. The welding machine 2 is installed on the mobile frame 1. In actual use, the welding machine 2 can be directly placed on the mobile frame 1, or the welding machine 2 can be fixed to the mobile frame 1 by bolts. The mobile frame 1 is provided with a fixed frame 4 that can move in a vertical direction. The fixed frame 4 is rotatably connected with a rotating frame 6. The rotating frame 6 includes a rotating block 7 and a rotating rod 8. The rotating block 7 is rotatably connected to the fixed frame 4, and the rotating rod 8 is fixedly connected to the rotating block 7. The welding gun 3 is installed at one end of the rotating rod 8 away from the rotating block 7. The fixed frame 4 is provided with a power component for driving the rotating block 7 to rotate.

[0030] In this embodiment, the power component is a motor 12, and the output shaft of the motor 12 is coaxially fixedly connected to the rotating block 7. In addition, the motor 12 can also drive the rotating block 7 to rotate through gear transmission.

[0031] In this embodiment, a driving member for driving the fixed frame 4 to move vertically is provided on the mobile frame 1. The driving member is a cylinder 5. The cylinder 5 is vertically arranged. One end of the cylinder 5 is fixedly connected to the mobile frame 1, and the other end of the cylinder 5 is fixedly connected to the fixed frame 4.

[0032] The fixing frame 4 can move vertically so that the welding gun 3 is close to the weld position inside the pipe, and the rotating block 7 can rotate to drive the welding gun 3 to move along the weld path inside the pipe, thereby achieving welding inside the pipe.

[0033] In this embodiment, a fixed block 9 is fixedly connected to the upper end of the rotating rod 8, a clamping sleeve 10 is fixedly connected to the fixed block 9, and the welding gun 3 is installed in the clamping sleeve 10. In actual use, the welding gun 3 is inserted into the clamping sleeve 10 and has an interference fit with the clamping sleeve 10; in addition, a camera 11 is installed on the fixed block 9 to locate the weld position.

[0034] In this embodiment, in order to facilitate the positioning of the mobile frame 1 and make the rotation axis of the rotating block 7 coincide with the central axis of the pipeline, two leveling rods 13 are horizontally slidably connected to the mobile frame 1. The two leveling rods 13 can move closer to or away from each other. The ends of the two leveling rods 13 that move away from each other are rotatably connected to rollers 16. The leveling rods 13 slide to make the rollers 16 contact the inner wall of the pipeline. The mobile frame 1 is provided with a driving component for driving the two leveling rods 13 to move closer to or away from each other.

[0035] The driving assembly includes a handle 15 and a bidirectional screw 14. The bidirectional screw 14 is rotatably connected to the mobile frame 1. The rotation axis of the bidirectional screw 14 is set along the sliding direction of the leveling rod 13. The bidirectional screw 14 passes through the two leveling rods 13 at the same time, and the two leveling rods 13 are respectively threadedly connected to the two reverse thread lines of the bidirectional screw 14; the handle 15 is used to drive the bidirectional screw 14 to rotate.

[0036] In another embodiment, the driving assembly may also be electrically driven, and the electric drive drives the bidirectional screw rod 14 to rotate.

[0037] In this embodiment, the mobile frame 1 is electrically driven, and the mobile frame 1 can be moved by remote control, such as a remote control car, which will not be described in detail in this application.

[0038] In addition, a battery is installed on the mobile frame 1, and the power of all power components comes from the battery.

[0039] The implementation principle of a large-scale pipeline welding device disclosed in the present application is as follows: when in use, the welding machine 2 and the welding gun 3 are installed, and then the mobile frame 1 is placed in the pipeline, and then the position of the leveling rod 13 is adjusted by the driving component so that the rollers 16 on the two leveling rods 13 both contact the inner wall of the pipeline, and then the height of the welding gun 3 is adjusted by the cylinder 5 so that the welding gun 3 is close to the inner wall of the pipeline, and then the mobile frame 1 is moved by remote control, and under the action of the camera 11, the mobile frame 1 is moved to a suitable position, and then the motor 12 is used to drive the rotating frame 6 to rotate, and the welding gun 3 is controlled to open, so as to weld the pipeline weld; in actual use, the welding gun 3 can first rotate half a circle along the inside of the pipeline, and then the motor 12 is controlled to reverse, so that the welding gun 3 can be reversed one circle.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A large-scale pipeline welding device, comprising a welding machine (2) and a welding gun (3), characterized in that: The invention also comprises a mobile frame (1) capable of moving inside the pipeline, the welding machine (2) being arranged on the mobile frame (1), the mobile frame (1) being provided with a fixed frame (4), the fixed frame (4) being rotatably connected with a rotating frame (6), the rotating axis of the rotating frame (6) being arranged along the pipeline axis direction, the welding gun (3) being mounted on the rotating frame (6); and the fixed frame (4) being provided with a power component for driving the rotating frame (6) to rotate.

2. A large-scale pipeline welding device according to claim 1, characterized in that: The fixed frame (4) is slidably connected to the movable frame (1) in a vertical direction, and the movable frame (1) is provided with a driving member for driving the fixed frame (4) to slide.

3. A large-scale pipeline welding device according to claim 2, characterized in that: The driving member comprises a cylinder (5).

4. A large-scale pipeline welding device according to claim 1, characterized in that: The movable frame (1) is slidably connected with two leveling rods (13) in a horizontal direction. The two leveling rods (13) can move closer to or farther from each other. The leveling rods (13) slide to contact the inner wall of the pipe. The movable frame (1) is provided with a driving component for driving the two leveling rods (13) to move closer to or farther from each other.

5. A large-scale pipeline welding device according to claim 4, characterized in that: The driving assembly comprises a handle (15) and a bidirectional screw rod (14); the bidirectional screw rod (14) is rotatably connected to the moving frame (1); the bidirectional screw rod (14) rotates to drive the two leveling rods (13) to move closer to or farther from each other; and the handle (15) is used to drive the bidirectional screw rod (14) to rotate.

6. A large-scale pipeline welding device according to claim 1, characterized in that: The mobile frame (1) is electrically driven and can be moved by remote control.

7. A large-scale pipeline welding device according to claim 1, characterized in that: A camera (11) for photographing the position of the pipeline weld is installed on the rotating frame (6).

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