Metal pipeline welding equipment

Abstract

The invention discloses metal pipeline welding equipment which comprises a frame, three-jaw chucks symmetrically arranged on the frame and used for clamping a metal pipeline and driving the pipeline to rotate, a positioning mechanism arranged between the two three-jaw chucks on the frame and used for positioning the end of a steel pipe, and a grinding mechanism arranged on the frame and used for grinding the end of the steel pipe. A fixing plate for supporting the grinding mechanism and the welding mechanism is arranged on the frame, and a moving plate moving on the fixing plate is arranged on the fixing plate; during working, two metal pipelines are fixed through the three-jaw chuck, one ends of the inner sides of the metal pipelines are positioned through the positioning mechanism, a gap between the ends of the inner sides of the two metal pipelines is fixed, the positions of the ends of the inner sides of the metal pipelines are positioned, and then the welding mechanism and the grinding mechanism synchronously move, rotate steel pipes and grind the steel pipes; and meanwhile, the welding mechanism welds the connecting position of the steel pipe.

Description

Technical Field

[0001] The present invention relates to the field of pipeline welding, and more specifically to a metal pipeline welding device. Background Art

[0002] The coal replacement project is a series of engineering projects aimed at replacing traditional coal-based energy sources, aiming to reduce environmental pollution caused by coal combustion, improve energy utilization efficiency, and promote the optimization and upgrading of the energy structure. Coal is one of the main energy consumption methods, but the pollution problems caused by coal combustion are becoming increasingly serious, including air pollution, greenhouse gas emissions, etc. With the increasing awareness of global climate change and environmental protection, reducing coal use has become the consensus of the international community.

[0003] Its significance helps to reduce pollutant emissions from coal combustion and improve air quality. Promote the optimization and upgrading of the energy structure and improve energy utilization efficiency. Promote green and low-carbon development and achieve sustainable development goals.

[0004] The main types of coal replacement projects are: 1. Clean energy replacement: Replacing coal with clean energy such as natural gas, electricity (especially renewable energy electricity such as wind power, solar energy, etc.) for heating, power generation, etc. 2. Coal-fired boiler renovation: Technically renovating existing coal-fired boilers to improve thermal efficiency and reduce pollutant emissions. 3. Energy structure adjustment: Gradually reducing the proportion of coal in energy consumption by developing new energy sources such as renewable energy and nuclear energy.

[0005] When clean energy replaces coal, the laying of metal pipelines is widely applied. When laying metal pipelines, the heads of the pipelines need to be welded together.

[0006] To solve the problem of pipeline welding, there is a utility model patent with an application number of 202421118047.3 and a patent name of Metal Pipe Welding Tooling. The disclosed technical solution includes a chassis, a panel, a lifting component, and a turning-over mechanism. The lifting component is arranged on the chassis and is used to drive the panel to lift. The turning-over mechanism includes a turning-over component and two groups of clamping components; the turning-over component includes two support plates, a mounting plate, a double-shaft motor, two connecting shafts, two driving wheels, two driven wheels, two rotating parts, and two belts. Both support plates are fixedly connected to the panel. The support plates have through holes. The two rotating parts are respectively rotatably connected to the corresponding support plates. The double-shaft motor is installed on the panel through the mounting plate. The two output ends of the double-shaft motor are respectively fixedly connected to the corresponding connecting shafts. The two driving wheels are respectively fixedly connected to the corresponding connecting shafts. The two driven wheels are respectively fixedly connected to the corresponding rotating parts.

[0007] The invention patent with the application number 202411942081.7 and the patent name of an annular automatic welding device for metal pipe fittings based on a 5G dynamic adaptive algorithm includes a welding base, above which there is a welding cylinder. There are two groups of symmetrically arranged welding cylinders, and a welding mechanism is arranged inside the welding cylinders.

[0008] However, the above-mentioned solutions can only complete the welding operation. The pipe ends need to be polished first, and then the above-mentioned solutions can be used for welding operations, resulting in low efficiency. Summary of the Invention

[0009] The purpose of the present invention is to solve the above problems and provide a metal pipe welding device that can realize synchronous polishing and welding of pipe ends and improve the connection efficiency.

[0010] The technical solution adopted by the present invention to solve its technical problems is as follows: A metal pipe welding device includes a frame, a three-jaw chuck symmetrically arranged on the frame for clamping the metal pipe and driving the pipe to rotate, a positioning mechanism arranged between the two three-jaw chucks on the frame for positioning the ends of the steel pipe, a grinding mechanism arranged on the frame for grinding the ends of the steel pipe, and a welding mechanism. There is a fixed plate on the frame to support the grinding mechanism and the welding mechanism, and a moving plate that moves on the fixed plate is arranged on the fixed plate; The grinding mechanism includes a first lifting plate arranged at the lower end of the moving plate and moving up and down on the moving plate. A first cross bar is arranged at the right end of the first lifting plate, and a grinding wheel is arranged at the end of the first cross bar; The welding mechanism includes a second lifting plate arranged at the lower end of the moving plate and moving up and down on the moving plate. A second cross bar is arranged at the right end of the second lifting plate, and a welding torch that rotates on the second cross bar is arranged at the end of the second cross bar. When the three-jaw chuck rotates, the welding torch swings back and forth under the action of a first linkage mechanism; The first linkage mechanism includes a ring arranged on the rear three-jaw chuck and moving on the three-jaw chuck. A number of protrusions are arranged at intervals on the front side of the ring. A first support rod is arranged at the upper end of the welding torch and is matched with the protrusions on the ring. A second support rod is arranged on the second cross bar, and a tension spring is arranged between the first support rod and the second support rod.

[0011] Further, a first cylinder for driving the moving plate to move is arranged on the fixed plate.

[0012] Further, first guiding holes are symmetrically arranged up and down on the front side of the fixed plate. The upper first guiding hole is inclined downward from left to right, and the lower first guiding hole is inclined upward from left to right. A vertical long hole is arranged on the moving plate. Guide rods that pass through the long hole and are matched with the corresponding first guiding holes are arranged on both the first lifting plate and the second lifting plate.

[0013] Further, a second air cylinder for driving the circular ring to move back and forth is symmetrically arranged on the three-jaw chuck.

[0014] Further, a roller cooperating with the protrusion on the circular ring is arranged on the first support rod.

[0015] Further, the positioning mechanism includes a positioning plate arranged in the frame and capable of lifting in the frame. When the moving plate moves, the positioning plate lifts under the action of the second linkage mechanism.

[0016] Further, a guide rod is arranged in the frame, and guide sleeves cooperating with the guide rod are arranged at both ends of the positioning plate.

[0017] Further, the second linkage mechanism includes a connecting rod arranged at the lower end of the moving plate. A second guide hole is arranged at the lower end of the positioning plate. The second guide hole is inclined upward from left to right. A guide rod cooperating with the second guide hole is arranged at the right end of the connecting rod.

[0018] Further, an opening is arranged on the frame.

[0019] The beneficial effects of the present invention are as follows: 1. The present invention includes a frame, three-jaw chucks symmetrically arranged on the frame for clamping metal pipes and driving the pipes to rotate, a positioning mechanism arranged between the two three-jaw chucks on the frame for positioning the ends of steel pipes, a grinding mechanism arranged on the frame for grinding the ends of steel pipes, and a welding mechanism. A fixing plate for supporting the grinding mechanism and the welding mechanism is arranged on the frame, and a moving plate capable of moving on the fixing plate is arranged on the fixing plate. During work, two metal pipes are respectively fixed by the three-jaw chucks, and the inner ends of the metal pipes are positioned by the positioning mechanism, so as to fix the gap between the inner ends of the two metal pipes and position the positions of the inner ends of the metal pipes. Then, the welding mechanism and the grinding mechanism move synchronously, the steel pipe rotates, the grinding mechanism grinds, and at the same time, the welding mechanism welds the connection position of the steel pipe. Compared with manual welding, the labor intensity is reduced, and grinding and welding are combined in the same working station, improving the welding efficiency.

[0020] 2. The first linkage mechanism of the present invention includes a ring disposed on the three-jaw chuck at the rear end and movable on the three-jaw chuck. A number of protrusions are provided at intervals on the front side of the ring. The upper end of the welding torch is provided with a first support rod that cooperates with the protrusions on the ring. A second support rod is provided on the second cross bar. A tension spring is provided between the first support rod and the second support rod. The first support rod cooperates with the protrusions on the ring. When the three-jaw chuck rotates, the ring rotates accordingly. Under the action of the protrusions, the welding torch continuously swings back and forth on the second cross bar against the elastic force of the tension spring, thereby completing the welding operation. By means of mechanical linkage, there is no need for a separate motor or cylinder to drive the welding torch to swing, with low cost and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a top view of the present invention.

[0023] In the figure: frame 1, three-jaw chuck 2, fixed plate 3, moving plate 4, first guiding hole 5, first lifting plate 6, first cross bar 7, grinding wheel 8, second lifting plate 9, second cross bar 10, welding torch 11, ring 12, protrusion 13, first support rod 14, second support rod 15, tension spring 16, first cylinder 17, long hole 18, second cylinder 19, roller 20, positioning plate 21, guiding rod 22, guiding sleeve 23, connecting rod 24, second guiding hole 25, opening 26. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Such as Figure 1As shown in the figure, a metal pipe welding device includes a frame 1, a three-jaw chuck 2 symmetrically arranged on the frame 1 for clamping a metal pipe and driving the pipe to rotate, a positioning mechanism arranged between the two three-jaw chucks 2 on the frame 1 for positioning the end of the steel pipe, a grinding mechanism arranged on the frame 1 for grinding the end of the steel pipe, and a welding mechanism. A fixing plate 3 for supporting the grinding mechanism and the welding mechanism is arranged on the frame 1, and a moving plate 4 that moves on the fixing plate 3 is arranged on the fixing plate 3. During operation, two metal pipes are respectively fixed by the three-jaw chucks 2, and the inner end of one metal pipe is positioned by the positioning mechanism, so as to fix the gap between the inner ends of the two metal pipes and position the position of the inner end of the metal pipe. Then, the welding mechanism and the grinding mechanism move synchronously, the steel pipe rotates, the grinding mechanism grinds, and at the same time, the welding mechanism welds the connection position of the steel pipe. Compared with manual welding, the labor intensity is reduced, and grinding and welding are combined in the same station, improving the welding efficiency.

[0026] As Figure 1 and Figure 2 shown in the figure, the grinding mechanism includes a first lifting plate 6 arranged at the lower end of the moving plate 4 and moving up and down on the moving plate 4. A first cross bar 7 is arranged at the right end of the first lifting plate 6, and a grinding wheel 8 is arranged at the end of the first cross bar 7. The grinding wheel 8 corresponds to the gap at the middle position of the two metal round pipes. When the moving plate 4 moves to the right, the first lifting plate 6 moves to the right and rises accordingly, so that the grinding wheel 8 grinds the connection position of the two metal round pipes.

[0027] As Figure 1 and Figure 2 shown in the figure, the welding mechanism includes a second lifting plate 9 arranged at the lower end of the moving plate 4 and moving up and down on the moving plate 4. A second cross bar 10 is arranged at the right end of the second lifting plate 9, and a welding torch 11 that rotates on the second cross bar 10 is arranged at the end of the second cross bar 10. When the three-jaw chuck 2 rotates, the welding torch 11 swings back and forth under the action of the first linkage mechanism; when the moving plate 4 moves to the right, the second lifting plate 9 moves to the right and descends accordingly, and the welding torch 11 corresponds to the connection position of the two metal round pipes. The metal pipe rotates, and under the action of the linkage mechanism, the welding torch 11 continuously swings back and forth to weld the connection position of the metal pipe.

[0028] As Figure 1 、 Figure 2 and Figure 3As shown in the figure, the first linkage mechanism includes a ring 12 disposed on the three-jaw chuck 2 at the rear end and movable on the three-jaw chuck 2. A number of protrusions 13 are provided at intervals on the front side of the ring 12. At the upper end of the welding torch 11, there is a first support rod 14 that cooperates with the protrusions 13 on the ring 12. A second support rod 15 is provided on the second cross bar 10. A tension spring 16 is provided between the first support rod 14 and the second support rod 15. The first support rod 14 cooperates with the protrusions 13 on the ring 12. When the three-jaw chuck rotates, the ring 12 rotates accordingly. Under the action of the protrusions 13, the welding torch 11 continuously swings back and forth on the second cross bar 10 against the elastic force of the tension spring 16, thereby completing the welding operation. By means of mechanical linkage, there is no need for a separate motor or cylinder to drive the welding torch to swing, with low cost and long service life.

[0029] As Figure 1 shown in the figure, a first cylinder 17 for driving the moving plate 4 to move is provided on the fixed plate 3, and the moving plate 4 is connected to the fixed plate 3 through a guide rail-slider pair.

[0030] As Figure 2 shown in the figure, first guide holes 5 are symmetrically provided on the front side of the fixed plate 3, with the upper first guide hole 5 sloping downward from left to right and the lower first guide hole 5 sloping upward from left to right. A vertical long hole 18 is provided on the moving plate 4. Guide rods that pass through the long hole 18 and cooperate with the corresponding first guide holes 5 are provided on both the first lifting plate 6 and the second lifting plate 9. After the moving plate 4 moves to the right, under the action of the first guide holes 5, the welding torch 11 moves to the right and downward, the grinding wheel 8 moves to the right and upward, and the ring 12 moves forward to contact the first support rod 14 at the upper end of the welding torch 11. When the three-jaw chuck 2 rotates, the grinding wheel 8 grinds the end of the metal round tube, and the welding torch 11 performs the welding operation accordingly.

[0031] As Figure 1 shown in the figure, second cylinders 19 for driving the ring 12 to move back and forth are symmetrically provided on the three-jaw chuck 2. The cylinder ends of the second cylinders 19 are fixed on the three-jaw chuck 2, and the piston rod ends of the second cylinders 19 are fixedly connected to the ring 12.

[0032] As Figure 1 shown in the figure, rollers 20 that cooperate with the protrusions 13 on the ring 12 are provided on the first support rod 14.

[0033] As Figure 1As shown in the figure, the positioning mechanism includes a positioning plate 21 disposed within the frame 1 and capable of lifting within the frame 1. When the moving plate 4 moves, the positioning plate 21 is lifted or lowered under the action of the second linkage mechanism. When the moving plate 4 moves, under the action of the second linkage mechanism, the positioning plate 21 is lifted or lowered. After the positioning plate 21 rises, the inner ends of the two metal tubes are respectively in contact with the two side surfaces of the positioning plate 21, ensuring the welding position and the size of the gap.

[0034] As Figure 2 shown in the figure, a guide rod 22 is provided within the frame 1, and guide sleeves 23 cooperating with the guide rod 22 are provided at both ends of the positioning plate 21.

[0035] As Figure 1 and Figure 2 shown in the figure, the second linkage mechanism includes a connecting rod 24 disposed at the lower end of the moving plate 4. A second guide hole 25 is provided at the lower end of the positioning plate 21. The second guide hole 25 is inclined upward from left to right. A guide rod cooperating with the second guide hole 25 is provided at the right end of the connecting rod 24. When the moving plate 4 moves to the right, under the action of the second guide hole 25 and the guide rod, the positioning plate 21 is lifted or lowered.

[0036] As Figure 1 shown in the figure, an opening 26 is provided on the frame 1, and the connecting rod 24 passes through the opening 26.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "left", "right", "up", "down", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A metal pipe welding device, characterized in that: The invention comprises a frame (1), a three-jaw chuck (2) symmetrically arranged on the frame (1) for clamping a metal pipe and driving the pipe to rotate, a positioning mechanism arranged between two three-jaw chucks (2) on the frame (1) for positioning an end of a steel pipe, a grinding mechanism arranged on the frame (1) for grinding the end of the steel pipe, and a welding mechanism, wherein a fixing plate (3) supporting the grinding mechanism and the welding mechanism is provided on the frame (1), and a moving plate (4) moving on the fixing plate (3) is provided on the fixing plate (3); The grinding mechanism comprises a first lifting plate (6) arranged at the lower end of the movable plate (4) and raised and lowered on the movable plate (4), a first cross bar (7) being provided at the right end of the first lifting plate (6), and a grinding wheel (8) being provided at the end of the first cross bar (7); The welding mechanism comprises a second lifting plate (9) arranged at the lower end of the movable plate (4) and lifted and lowered on the movable plate (4); a second cross bar (10) is provided at the right end of the second lifting plate (9); a welding gun (11) rotating on the second cross bar (10) is provided at the end of the second cross bar (10); when the three-jaw chuck (2) rotates, the welding gun (11) swings back and forth under the action of the first linkage mechanism; The first linkage mechanism comprises a circular ring (12) arranged on the three-jaw chuck (2) at the rear end and moving on the three-jaw chuck (2), a plurality of protrusions (13) are arranged at intervals on the front side surface of the circular ring (12), a first support rod (14) cooperating with the protrusions (13) on the circular ring (12) is arranged on the upper end of the welding gun (11), a second support rod (15) is arranged on the second cross bar (10), and a tension spring (16) is arranged between the first support rod (14) and the second support rod (15).

2. A metal pipe welding device as claimed in claim 1, characterized in that: The fixed plate (3) is provided with a first cylinder (17) for driving the movable plate (4) to move.

3. A metal pipe welding device as claimed in claim 1, characterized in that: The front side of the fixed plate (3) is provided with first guide holes (5) symmetrically in the upper and lower directions, the upper first guide hole (5) is inclined downward from left to right, and the lower first guide hole (5) is inclined upward from left to right. The movable plate (4) is provided with vertical long holes (18), and the first lifting plate (6) and the second lifting plate (9) are both provided with guide rods passing through the long holes (18) and cooperating with the corresponding first guide holes (5).

4. A metal pipe welding device as claimed in claim 1, characterized in that: The three-jaw chuck (2) is symmetrically provided with a second cylinder (19) for driving the ring (12) to move forward and backward.

5. The metal pipe welding equipment according to claim 1, characterized in that: The first support rod (14) is provided with a roller (20) which cooperates with the protrusion (13) on the ring (12).

6. The metal pipe welding equipment according to claim 1, characterized in that: The positioning mechanism comprises a positioning plate (21) which is arranged in the frame (1) and is lifted and lowered in the frame (1); when the movable plate (4) moves, the positioning plate (21) is lifted and lowered under the action of the second linkage mechanism.

7. A metal pipe welding device as claimed in claim 6, characterized in that: A guide rod (22) is provided in the frame (1), and guide sleeves (23) cooperating with the guide rod (22) are provided at both ends of the positioning plate (21).

8. A metal pipe welding device as claimed in claim 6, characterized in that: The second linkage mechanism comprises a connecting rod (24) arranged at the lower end of the movable plate (4); a second guide hole (25) is provided at the lower end of the positioning plate (21); the second guide hole (25) is inclined upward from left to right; and a guide rod cooperating with the second guide hole (25) is provided at the right end of the connecting rod (24).

9. A metal pipe welding device as claimed in claim 8, characterized in that: The frame (1) is provided with an opening (26).

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