Opening aligning device for pipeline automatic welding

Abstract

An aligning device for pipeline automatic welding relates to the technical field of pipeline aligning welding, and is characterized in that a pipeline I and a pipeline II are aligned and welded through an automatic welding robot, and the automatic welding robot is coaxially sleeved at a pipe orifice of the pipeline I; the butt joint device comprises a butt joint device and a rack capable of sleeving a pipe body of a pipeline II; at least four seam aligning devices used for aligning interfaces of the pipeline I and the pipeline II are mounted on one side, corresponding to the outer side of the pipeline I, of the rack at intervals in the circumferential direction; the butt joint device comprises a mounting frame correspondingly connected with the rack in a fastening mode, a telescopic arm used for pressing the pipeline I is obliquely mounted at one end of the mounting frame, and a telescopic cylinder II used for driving the telescopic arm is mounted at the other end of the mounting frame; during welding operation, the telescopic arms are controlled to be sequentially shortened and retreated in a staggered mode so as to avoid an automatic welding robot which moves along the circumference of the pipeline I for welding operation, automatic operation is achieved, the labor intensity of operators is greatly reduced, and the welding operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline butt welding, in particular to a butt welding device for automatic pipeline welding. Background Art

[0002] As is known, when laying oil and gas pipelines, two adjacent pipelines need to be welded together; since the diameter of oil and gas pipelines is usually large, a docking device is needed to coaxially position the two pipelines during pipeline welding; the existing docking devices are mainly divided into internal docking devices and external docking devices. Since the internal docking device needs to move along the inner wall of the pipeline, the external docking device needs to be used at the final interface, otherwise the internal docking device cannot be removed;

[0003] The existing external jointing devices are mostly arranged with multiple positioning screws at intervals along the annular direction on one side of the frame, so that the frame is coaxial with the outer wall of one of the pipes, and the other pipe is coaxial with the frame through the screws, so as to achieve the purpose of coaxial positioning of the two pipes; there are many inconveniences in using such external jointing devices; the operator needs to repeatedly adjust the positioning screws to achieve the coaxiality of the two pipes, which is inefficient and labor-intensive for the operator; the positioning screws block the welding path of the automatic welding robot, resulting in the inability to use the automatic welding robot for automatic welding, and the manual welding operation is inefficient; the above defects are problems that need to be solved urgently by those skilled in the art;

[0004] A Chinese patent (publication number: CN115283795A) discloses a pipe external butt welding system; the patent includes a frame, two pipe clamps arranged on the frame, and a welding actuator arranged on the frame and located between the two pipe clamps; the two pipe clamps include a rear pipe clamp for surrounding and positioning the rear pipe and a front pipe clamp for surrounding and positioning the front pipe; the front and rear pipe clamps can realize coaxial clamping of the front and rear pipes, and the pipe clamp adjustment device can adjust the axial end spacing of the front and rear pipes; the patent has a complex structure, is not conducive to later maintenance, and has high use costs. Utility Model Content

[0005] In order to overcome the deficiencies in the background technology, the utility model discloses a butt-jointing device for automatic pipeline welding.

[0006] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0007] A matching device for automatic pipeline welding is used to match pipelines I and II by an automatic welding robot, which is coaxially sleeved at the pipe mouth of pipeline I; it comprises a matching device and a frame that can be sleeved on the pipe body of pipeline II; at least four matching devices for aligning the interfaces of pipelines I and II are installed at intervals along the circumferential direction on one side of the frame corresponding to the outer side of pipeline I; the matching device comprises a mounting frame that is tightly connected to the frame, a telescopic arm for pressing pipeline I is obliquely installed at one end of the mounting frame, and a telescopic cylinder II for driving the telescopic arm is installed at the other end of the mounting frame.

[0008] Preferably, the angle between the longitudinal axis of the telescopic arm and the axis of the pipeline I is 30 to 60 degrees.

[0009] Preferably, the telescopic end of the telescopic arm is provided with a slot, in which a roller with a rim capable of contacting pipe I is rotatably connected; or two rollers with rims capable of contacting pipe I and pipe II respectively are rotatably connected in the slot at intervals.

[0010] Preferably, the frame is equipped with 6 to 9 alignment devices for aligning the interfaces of pipeline I and pipeline II.

[0011] Preferably, the seam-aligning device is adjustably connected to the frame.

[0012] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0013] The utility model discloses a matching device for automatic pipeline welding, which has a simple structure. The automatic welding robot can make the pipeline I and the pipeline II match welding, which can effectively ensure the welding quality and reduce the labor intensity of the operators. During the matching operation, multiple telescopic cylinders II are controlled to extend synchronously, and the telescopic arms are driven to move synchronously. The multiple telescopic arms contact the pipeline I, so that the pipeline I and the pipeline II are kept coaxial, which reduces the difficulty of the matching operation and improves the matching operation efficiency. During the welding operation, the multiple telescopic arms are controlled to shorten and retreat in a staggered manner, and it is ensured that at least three telescopic arms can firmly position the pipeline I to avoid the automatic welding robot moving along the circumference of the pipeline I for welding operation. After the automatic welding robot leaves, the corresponding telescopic arm is extended and reset, and the next telescopic arm is shortened and retreated to avoid the automatic welding robot until the automatic welding robot welds the pipeline I and the pipeline II into one. The automatic operation greatly reduces the labor intensity of the operators and improves the welding operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the seam-matching device.

[0016] In the figure: 1. Frame; 2. Automatic welding robot; 3. Seam-matching device; 3-1. Mounting frame; 3-2. Telescopic arm; 3-3. Telescopic cylinder II; 3-4. Roller; 4. Pipeline I; 5. Pipeline II. DETAILED DESCRIPTION

[0017] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0018] Embodiment 1, in combination with Figures 1-2 , a butt-joint device for automatic pipe welding, which uses an automatic welding robot 2 to butt-jointly weld pipes I4 and II5. The automatic welding robot 2 is coaxially sleeved at the pipe mouth of pipe I4. During welding, the automatic welding robot 2 rotates along pipe I4 to weld pipes I4 and II5 into one. It comprises a butt-joint device 3 and a frame 1 that can be sleeved on the pipe body of pipe II5. When in use, the frame 1 is sleeved on the pipe body of pipe II5, and the frame 1 and the pipe body of pipe II5 are tightly connected;

[0019] At least four seam alignment devices 3 for aligning the interfaces of pipes I4 and II5 are installed at intervals along the annular direction on one side of the frame 1 corresponding to the outer side of pipe I4; the seam alignment device 3 comprises a mounting frame 3-1 fastened to the corresponding frame 1, a telescopic arm 3-2 for pressing pipe I4 is obliquely installed at one end of the mounting frame 3-1, and a telescopic cylinder II3-3 for driving the telescopic arm 3-2 is installed at the other end of the mounting frame 3-1, that is, during the docking operation, multiple telescopic cylinders II3-3 are controlled to extend synchronously, driving the telescopic arms 3-2 to move synchronously, and multiple telescopic arms 3-2 contact pipe I4, so that pipe I4 and pipe II5 remain coaxial; during the welding operation, multiple telescopic cylinders II3-3 are controlled to extend synchronously, driving the telescopic arms 3-2 to move synchronously, and multiple telescopic arms 3-2 contact pipe I4, so that pipe I4 and pipe II5 remain coaxial; during the welding operation, multiple The telescopic arms 3-2 are shortened and retracted alternately, and at least three telescopic arms 3-2 are ensured to firmly position the pipe I4 to avoid the automatic welding robot 2 moving along the circumference of the pipe I4 for welding. After the automatic welding robot 2 leaves, the corresponding telescopic arm 3-2 is extended and reset, and the next telescopic arm 3-2 is shortened and retracted to avoid the automatic welding robot 2 until the automatic welding robot 2 welds the pipe I4 and the pipe II5 into one. As needed, the frame 1 is equipped with 6 to 9 seam alignment devices 3 for aligning the interfaces of the pipe I4 and the pipe II5, which can ensure the firm positioning of the pipe I4 while avoiding the automatic welding robot 2.

[0020] In addition, the seam-aligning device 3 is adjustably connected to the frame 1, that is, the position of the seam-aligning device 3 can be adjusted according to the diameter of the pipeline Ⅰ4 to adapt to pipelines Ⅰ4 of different specifications, thereby improving the scope of application and the practicality.

[0021] Embodiment 2, in combination with Figures 1-2 , a matching device for automatic pipe welding, based on any one of embodiments 1 to 3, the angle between the longitudinal axis of the telescopic arm 3-2 and the axis of the pipe I4 is 30-60°; preferably, the angle between the longitudinal axis of the telescopic arm 3-2 and the axis of the pipe I4 is 45°, which can firmly locate the position of the pipe I4 and keep the pipe I4 and the pipe II5 coaxial;

[0022] The telescopic end of the telescopic arm 3-2 is provided with a slot, in which a roller 3-4 with a rim that can contact pipe I4 is rotatably connected; or two rollers 3-4 with rims that can contact pipe I4 and pipe II5 respectively are rotatably connected in the slot at intervals, which can prevent the telescopic arm 3-2 from directly contacting and rubbing against pipe I4 and causing damage to pipe I4.

[0023] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A butt-joint device for automatic pipe welding, which uses an automatic welding robot (2) to butt-jointly weld pipes I (4) and II (5), wherein the automatic welding robot (2) is coaxially sleeved at the pipe opening of pipe I (4); the characteristics are: The invention comprises a seam alignment device (3) and a frame (1) capable of being sleeved on a pipe body of a pipe II (5); at least four seam alignment devices (3) for aligning the interfaces of the pipe I (4) and the pipe II (5) are installed at intervals along the circumferential direction on one side of the frame (1) corresponding to the outer side of the pipe I (4); the seam alignment device (3) comprises a mounting frame (3-1) fixedly connected to the frame (1); a telescopic arm (3-2) for pressing the pipe I (4) is obliquely installed at one end of the mounting frame (3-1); and a telescopic cylinder II (3-3) for driving the telescopic arm (3-2) is installed at the other end of the mounting frame (3-1).

2. The automatic pipe welding device according to claim 1, characterized in that: The included angle between the longitudinal axis of the telescopic arm (3-2) and the axis of the pipeline I (4) is 30 to 60 degrees.

3. The automatic pipe welding device according to claim 1, characterized in that: The telescopic end of the telescopic arm (3-2) is provided with a slot, in which a roller (3-4) is rotatably connected and has a rim capable of contacting the pipe I (4); or two rollers (3-4) are rotatably connected and have rims capable of contacting the pipe I (4) and the pipe II (5) at intervals in the slot.

4. The automatic pipe welding device according to claim 1, characterized in that: The frame (1) is equipped with 6 to 9 seam alignment devices (3) for aligning the interfaces of pipeline I (4) and pipeline II (5).

5. The automatic pipe welding device according to claim 1, characterized in that: The seam-aligning device (3) is adjustably connected to the frame (1).

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