Metal pipe welding equipment

Abstract

The present invention discloses a metal pipe welding device, which 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 two three-jaw chucks on the frame for positioning the end of the steel pipe, a grinding mechanism arranged on the frame for grinding the end of the steel pipe, and a welding mechanism. The frame is provided with a fixed plate supporting the grinding mechanism and the welding mechanism, and the fixed plate is provided with a movable plate that moves on the fixed plate. During operation, two metal pipes are respectively fixed by the three-jaw chuck, and one inner end of the 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 the welding mechanism welds the connection position of the steel pipe.

Description

Technical Field

[0001] The invention relates to the field of pipeline welding, in particular to a metal pipeline welding device. Background Art

[0002] Coal replacement projects are a series of projects designed to replace traditional coal-fired energy sources. They aim to reduce environmental pollution, improve energy efficiency, and promote the optimization and upgrading of the energy structure. Coal combustion is a major form of energy consumption, but the pollution it causes is becoming increasingly serious, including air pollution and greenhouse gas emissions. With the increasing awareness of global climate change and environmental protection, reducing coal use has become an international consensus.

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

[0004] The main types of coal replacement projects include: 1. Clean energy substitution: Clean energy sources such as natural gas and electricity (especially renewable energy such as wind and solar power) replace coal for heating and power generation. 2. Coal-fired boiler retrofit: Technical upgrades to existing coal-fired boilers to improve thermal efficiency and reduce pollutant emissions. 3. Energy structure adjustment: Gradually reduce the proportion of coal in energy consumption through the development of renewable energy, nuclear energy, and other new energy sources.

[0005] When clean energy replaces coal, it is widely used in the laying of metal pipes. When laying metal pipes, the pipe heads need to be welded together.

[0006] In order to solve the problem of pipeline welding, there is an application number 202421118047.3, and the patent name is a utility model patent for metal pipe welding tooling. It discloses a technical solution including a base frame, a panel, a lifting assembly and a flipping mechanism. The lifting assembly is arranged on the base frame to drive the panel to lift and lower. The flipping mechanism includes a flipping assembly and two sets of clamping assemblies; the flipping assembly includes two support plates, a mounting plate, a dual-axis motor, two connecting shafts, two driving wheels, two driven wheels, two rotating parts and two belts. The two support plates are fixedly connected to the panel, the support plate has a through hole, and the two rotating parts are respectively rotatably connected to the corresponding support plates. The dual-axis motor is installed on the panel through the mounting plate. The two output ends of the dual-axis motor are respectively fixedly connected to the corresponding connecting shafts, the two driving wheels are respectively fixedly connected to the corresponding connecting shafts, and the two driven wheels are respectively fixedly connected to the corresponding rotating parts.

[0007] The application number is 202411942081.7, and the patent name is an invention patent for an annular automatic welding device for metal pipes based on a 5G dynamic adaptive algorithm, comprising a welding seat, a welding tube is provided above the welding seat, and two groups of welding tubes are symmetrically arranged, and a welding mechanism is provided inside the welding tube.

[0008] However, the above solutions can only complete the welding operation, and the pipe end needs to be polished first before the welding operation can be performed using the above solutions, which is inefficient. 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 achieve synchronous grinding and welding of the pipe end, thereby improving the connection efficiency.

[0010] The technical solution adopted by the present invention to solve the technical problem is:

[0011] A metal pipe welding device comprises a frame, a three-jaw chuck symmetrically arranged on the frame for clamping a metal pipe and driving the pipe to rotate, a positioning mechanism arranged between two of the three-jaw chucks on the frame for positioning an end of a steel pipe, a grinding mechanism arranged on the frame for grinding the end of the steel pipe, and a welding mechanism, wherein the frame is provided with a fixed plate supporting the grinding mechanism and the welding mechanism, and the fixed plate is provided with a movable plate that moves on the fixed plate;

[0012] The grinding mechanism includes a first lifting plate arranged at the lower end of the movable plate and raised and lowered on the movable plate, a first crossbar is provided at the right end of the first lifting plate, and a grinding wheel is provided at the end of the first crossbar;

[0013] The welding mechanism includes a second lifting plate arranged at the lower end of the movable plate and raised and lowered on the movable plate, a second cross bar is provided at the right end of the second lifting plate, and a welding gun that rotates on the second cross bar is provided at the end of the second cross bar. When the three-jaw chuck rotates, the welding gun swings back and forth under the action of the first linkage mechanism;

[0014] The first linkage mechanism includes a circular ring arranged on the three-jaw chuck at the rear end and moving on the three-jaw chuck, a plurality of protrusions are provided at intervals on the front side surface of the circular ring, a first support rod is provided at the upper end of the welding gun to cooperate with the protrusions on the circular ring, a second support rod is provided on the second cross bar, and a tension spring is provided between the first support rod and the second support rod.

[0015] Furthermore, a first cylinder for driving the movable plate to move is provided on the fixed plate.

[0016] Furthermore, first guide holes are symmetrically provided on the front side of the fixed plate, the upper first guide hole is inclined downward from left to right, and the lower first guide hole is inclined upward from left to right. Vertical long holes are provided on the movable plate, and the first lifting plate and the second lifting plate are both provided with guide rods passing through the long holes and cooperating with the corresponding first guide holes.

[0017] Furthermore, a second cylinder for driving the ring to move back and forth is symmetrically provided on the three-jaw chuck.

[0018] Furthermore, the first support rod is provided with a roller that cooperates with the protrusion on the ring.

[0019] Furthermore, the positioning mechanism includes a positioning plate that is arranged in the frame and is lifted and lowered in the frame. When the movable plate moves, the positioning plate is lifted and lowered under the action of the second linkage mechanism.

[0020] Furthermore, a guide rod is provided in the frame, and guide sleeves cooperating with the guide rod are provided at both ends of the positioning plate.

[0021] Furthermore, the second linkage mechanism includes a connecting rod arranged at the lower end of the movable plate, a second guide hole is provided at the lower end of the positioning plate, the second guide hole is inclined upward from left to right, and a guide rod is provided at the right end of the connecting rod to cooperate with the second guide hole.

[0022] Furthermore, the frame is provided with an opening.

[0023] The beneficial effects of the present invention are:

[0024] The present invention comprises a frame, a three-jaw chuck symmetrically arranged on the frame for clamping metal pipes and driving the pipes to rotate, a positioning mechanism disposed between the two three-jaw chucks on the frame for positioning the ends of the steel pipes, a grinding mechanism disposed on the frame for grinding the ends of the steel pipes, and a welding mechanism. The frame is provided with a fixed plate supporting the grinding mechanism and the welding mechanism, and the fixed plate is provided with a movable plate that moves on the fixed plate. During operation, the three-jaw chucks respectively secure the two metal pipes, and the positioning mechanism positions the inner ends of the metal pipes, thereby fixing the gap between the inner ends of the two metal pipes and positioning the inner ends of the metal pipes. The welding mechanism and the grinding mechanism then move synchronously, rotating the steel pipes and grinding them while the welding mechanism simultaneously welds the connected parts of the steel pipes. Compared to manual welding, this reduces labor intensity and improves welding efficiency by combining grinding and welding into the same workstation.

[0025] 2. The first linkage mechanism of the present invention includes a circular ring mounted on the rear end of the three-jaw chuck and movable on the three-jaw chuck. A plurality of protrusions are provided at intervals on the front side of the circular ring. A first support rod is provided at the upper end of the welding gun, which cooperates with the protrusions on the circular ring. A second support rod is provided on the second crossbar, and a tension spring is provided between the first and second support rods. The first support rod cooperates with the protrusions on the circular ring. As the three-jaw chuck rotates, the circular ring rotates accordingly. Under the action of the protrusions, the welding gun overcomes the elastic force of the tension spring and continuously swings back and forth on the second crossbar, thereby completing the welding operation. This mechanical linkage eliminates the need for a separate motor or cylinder to drive the welding gun to swing, resulting in low cost and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is the main view of the present invention;

[0029] Figure 3 It is a top view of the present invention.

[0030] In the figure: frame 1, three-jaw chuck 2, fixed plate 3, movable plate 4, first guide hole 5, first lifting plate 6, first cross bar 7, grinding wheel 8, second lifting plate 9, second cross bar 10, welding gun 11, ring 12, protrusion 13, first support rod 14, second support rod 15, tension spring 16, first cylinder 17, elongated hole 18, second cylinder 19, roller 20, positioning plate 21, guide rod 22, guide sleeve 23, connecting rod 24, second guide hole 25, opening 26. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0032] like Figure 1As shown, a metal pipe welding device includes a frame 1, a three-jaw chuck 2 symmetrically arranged on the frame 1 for clamping the metal pipe and driving the pipe to rotate, a positioning mechanism arranged between 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. The frame 1 is provided with a fixed plate 3 supporting the grinding mechanism and the welding mechanism, and the fixed plate 3 is provided with a movable plate 4 that moves on the fixed plate 3. During operation, the three-jaw chuck 2 is used to fix two metal pipes respectively, and the positioning mechanism is used to position the inner ends of the metal pipes, thereby fixing the gap between the inner ends of the two metal pipes and positioning the inner ends of the metal pipes. Afterwards, the welding mechanism and the grinding mechanism move synchronously, the steel pipe rotates, the grinding mechanism grinds, and the welding mechanism welds the connection position of the steel pipes. Compared with manual welding, the labor intensity is reduced, and the grinding and welding are combined into the same work station, which improves the welding efficiency.

[0033] like Figure 1 and Figure 2 As shown, the grinding mechanism includes 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 is provided at the right end of the first lifting plate 6, and a grinding wheel 8 is provided at the end of the first cross bar 7. The grinding wheel 8 corresponds to the gap between the two metal round tubes. When the movable 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 tubes.

[0034] like Figure 1 and Figure 2 As shown, the welding mechanism includes a second lifting plate 9 which is arranged at the lower end of the movable plate 4 and is 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 which rotates 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; when the movable plate 4 moves to the right, the second lifting plate 9 moves to the right and descends accordingly, and the welding gun 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 gun 11 continuously swings back and forth to weld the connection position of the metal pipe.

[0035] like Figure 1 、 Figure 2 and Figure 3As shown, the first linkage mechanism includes a circular ring 12 disposed on the rear end of the three-jaw chuck 2 and movable on the three-jaw chuck 2. Several protrusions 13 are spaced apart on the front side of the circular ring 12. A first support rod 14 is provided at the upper end of the welding gun 11, which engages with the protrusions 13 on the circular ring 12. A second support rod 15 is provided on the second crossbar 10, and a tension spring 16 is provided between the first support rod 14 and the second support rod 15. The first support rod 14 engages with the protrusions 13 on the circular ring 12. As the three-jaw chuck rotates, the circular ring 12 rotates accordingly. Under the action of the protrusions 13, the welding gun 11 overcomes the elastic force of the tension spring 16 and continuously swings back and forth on the second crossbar 10, thereby completing the welding operation. This mechanical linkage eliminates the need for a separate motor or cylinder to drive the welding gun's swing, resulting in low cost and a long service life.

[0036] like Figure 1 As shown, the fixed plate 3 is provided with a first cylinder 17 for driving the movable plate 4 to move, and the movable plate 4 is connected to the fixed plate 3 via a guide rail slider pair.

[0037] like Figure 2 As shown, the front side of the fixed plate 3 is symmetrically provided with first guide holes 5, 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, and the movable plate 4 is provided with a vertical long hole 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. After the movable plate 4 moves to the right, under the action of the first guide hole 5, the welding gun 11 moves to the right and downward, the grinding wheel 8 moves to the right and upward, and the ring 12 moves forward and contacts the first support rod 14 at the upper end of the welding gun 11. When the three-jaw chuck 2 rotates, the grinding wheel 8 grinds the end of the metal round tube, and the welding gun 11 then performs the welding operation.

[0038] like Figure 1 As shown, a second cylinder 19 is symmetrically provided on the three-jaw chuck 2 to drive the ring 12 to move back and forth. The cylinder body end of the second cylinder 19 is fixed on the three-jaw chuck 2, and the piston rod end of the second cylinder 19 is fixedly connected to the ring 12.

[0039] like Figure 1 As shown, the first support rod 14 is provided with a roller 20 that cooperates with the protrusion 13 on the ring 12 .

[0040] like Figure 1As shown, the positioning mechanism includes a positioning plate 21 disposed within the frame 1 and raised and lowered within the frame 1. The positioning plate 21 is raised and lowered by the second linkage mechanism as the movable plate 4 moves. As the movable plate 4 moves, the positioning plate 21 is raised and lowered by the second linkage mechanism. After the positioning plate 21 rises, the inner ends of the two metal tubes contact the two side surfaces of the positioning plate 21, respectively, ensuring the welding position and gap size.

[0041] like Figure 2 As shown, 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 .

[0042] like Figure 1 and Figure 2 As shown, the second linkage mechanism includes a connecting rod 24 disposed 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. A guide rod is provided at the right end of the connecting rod 24 to cooperate with the second guide hole 25. When the movable plate 4 moves rightward, the positioning plate 21 is raised and lowered under the action of the second guide hole 25 and the guide rod.

[0043] like Figure 1 As shown, the frame 1 is provided with an opening 26 , and the connecting rod 24 passes through the opening 26 .

[0044] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

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 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, wherein a fixed plate (3) supporting the grinding mechanism and the welding mechanism is provided on the frame (1), and a movable plate (4) moving on the fixed plate (3) is provided on the fixed 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 crossbar (7) is provided at the right end of the first lifting plate (6); and a grinding wheel (8) is provided at the end of the first crossbar (7); The welding mechanism comprises a second lifting plate (9) arranged at the lower end of the movable plate (4) and raised 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 rear end of the three-jaw chuck (2) and moving on the three-jaw chuck (2), a plurality of protrusions (13) are provided at intervals on the front side surface of the circular ring (12), a first support rod (14) is provided at the upper end of the welding gun (11) and is matched with the protrusions (13) on the circular ring (12), a second support rod (15) is provided on the second cross bar (10), and a tension spring (16) is provided between the first support rod (14) and the second support rod (15).

2. A metal pipe welding device according to 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. The metal pipe welding equipment according to claim 1, characterized in that: The front side of the fixed plate (3) is symmetrically provided with first guide holes (5), 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 a vertical long hole (18), and the first lifting plate (6) and the second lifting plate (9) are both provided with a guide rod passing through the long hole (18) and cooperating with the corresponding first guide hole (5).

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

5. The metal pipe welding equipment according to claim 1, characterized in that: The first support rod (14) is provided with a roller (20) that 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) arranged in the frame (1) and raised and lowered in the frame (1); when the movable plate (4) moves, the positioning plate (21) is raised and lowered under the action of the second linkage mechanism.

7. The metal pipe welding equipment according to claim 6, characterized in that: A guide rod (22) is provided in the frame (1), and guide sleeves (23) that cooperate with the guide rod (22) are provided at both ends of the positioning plate (21).

8. The metal pipe welding equipment according to claim 6, characterized in that: The second linkage mechanism includes 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 is provided at the right end of the connecting rod (24) to cooperate with the second guide hole (25).

9. The metal pipe welding equipment according to claim 8, characterized in that: The frame (1) is provided with an opening (26).

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