Large-diameter pipeline assembling machine and using method

Abstract

The invention provides a large-diameter pipeline assembling machine and a using method, and belongs to the technical field of welding auxiliary equipment. The large-diameter pipeline assembling machine comprises first bearing equipment, second bearing equipment, third bearing equipment and two self-walking mechanisms; two first carrier roller tire rotating mechanisms, two first translation frames, a first translation oil cylinder, two first lifting devices and two first lifting frames are arranged on the first bearing equipment, the first lifting devices are fixed on the first bearing equipment, the working ends of the first lifting devices are connected with the first lifting frames, the first translation oil cylinder is fixed on the first lifting frames, and the working ends of the first lifting devices are connected with the first lifting frames. The first carrier roller rotating tire mechanisms are arranged on the first translation frame, the telescopic end of the first translation oil cylinder is connected with the first translation frame, and the two ends of the first pipeline are placed at the two first carrier roller rotating shaft mechanisms at the same time. According to the device, the heights and the horizontal positions of the two pipelines can be accurately adjusted, the accuracy of butt joint between the two pipelines is ensured, the phenomena of misalignment and deviation are avoided, and therefore the welding quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding auxiliary equipment, and in particular relates to a large-diameter pipeline assembly machine and a use method thereof. Background Art

[0002] In the patent application with application number 202020671939.1, an auxiliary device for large-diameter pipe assembly is proposed, which solves the technical problems of cumbersome adjustment procedures, time-consuming and low matching accuracy during large-diameter pipe assembly. The key points of its technical solution are that the retractable scale rod can be freely retracted and has a large measuring range, which can cover the maximum design nominal diameter allowed in the country. The main structure is connected by bolts, which is easy to assemble and disassemble, and convenient to carry outdoors for work; the device is simple to operate, and can quickly find the best assembly scheme in the assembly of large-diameter pipes, reduce the amount of misalignment of the small group, have high matching accuracy, increase the quality of the weld, and improve the work efficiency of pipeline welding assembly and centering.

[0003] However, in the prior art, when two large-diameter pipes are butt-jointed, accurate position adjustment cannot be achieved, which easily leads to misalignment and offset during the pipe butt-jointing process, thereby affecting the welding quality. Summary of the invention

[0004] Based on the above technical problems, the present invention provides a large-diameter pipe assembly machine, which can accurately adjust the height and horizontal position of two pipes respectively, ensure the accuracy of the docking between the two pipes, avoid misalignment and offset, and thus improve the welding quality.

[0005] The specific technical solution is: A large-diameter pipeline assembly machine comprises: a first supporting device, a second supporting device, a third supporting device and two self-propelled mechanisms; the first supporting device is provided with two first roller rotation mechanisms, two first translation frames, a first translation oil cylinder, two first lifting devices and two first lifting frames, the first lifting device is fixed to the first supporting device, the working end of the first lifting device is connected to the first lifting frame, the first translation oil cylinder is fixed to the first lifting frame, the first roller rotation mechanism is arranged on the first translation frame, the telescopic end of the first translation oil cylinder is connected to the first translation frame, and the two ends of the first pipeline are simultaneously placed on the two first roller rotating shaft mechanisms; The second supporting device is provided with a second roller tire rotation mechanism, a second translation frame, a second translation cylinder, a second lifting device and a second lifting frame. The second lifting device is fixed to the second supporting device, the working end of the second lifting device is connected to the second lifting frame, the second translation cylinder is fixed to the second lifting frame, the second roller tire rotation mechanism is arranged on the second translation frame, and the telescopic end of the second translation cylinder is connected to the second translation frame; the third supporting device is provided with a third roller tire rotation mechanism, and the second pipeline is placed at the second roller tire rotation mechanism and the third roller tire rotation mechanism at the same time; two self-propelled mechanisms are respectively arranged at the bottom of the first supporting device and the second supporting device.

[0006] In addition, a large-diameter pipeline assembling machine in the above technical solution provided by the present invention may also have the following additional technical features: In the above technical solution, the first lifting device includes: a first lifting cylinder and two first guide shafts; the first lifting cylinder is fixed on the first supporting device, and the telescopic end of the first lifting cylinder is connected to the first lifting frame; one end of the two first guide shafts is respectively connected to the two sides of the first supporting device, and the telescopic ends of the two first guide shafts are respectively connected to the two sides of the first lifting frame.

[0007] In the above technical solution, the second lifting device includes: a second lifting cylinder and two second guide shafts; the second lifting cylinder is fixed on the second supporting device, and the telescopic end of the second lifting cylinder is connected to the second lifting frame; one end of the two second guide shafts is respectively connected to the two sides of the second supporting device, and the telescopic ends of the two second guide shafts are respectively connected to the two sides of the second lifting frame.

[0008] In the above technical scheme, the self-propelled mechanism includes: a first reducer, traveling wheels, a connecting shaft, a driving sprocket, a driven sprocket and a chain; the first reducer is fixed on the first supporting device or the second supporting device; the traveling wheels include two driving wheels and two driven wheels, and the two driving wheels and the two driven wheels are respectively arranged on the first supporting device or the second supporting device; the two ends of the connecting shaft pass through the two driving wheels respectively; the driving sprocket is sleeved on the outside of the output end of the reducer; the driven sprocket is sleeved on the outside of the connecting shaft; the chain is simultaneously wound around the outside of the driving sprocket and the driven sprocket.

[0009] In the above technical solution, the first tire rotating mechanism of the supporting roller comprises: two first roller shafts; two ends of the two first roller shafts are rotatably connected to two sides of the first translation frame respectively.

[0010] In the above technical solution, the second roller tire rotation mechanism includes: two second roller shafts; two ends of the two second roller shafts are rotatably connected to two sides of the second translation frame respectively.

[0011] In the above technical scheme, the third roller tire rotation mechanism includes: two mounting seats, two rotating shaft assemblies, two gear sets, a second reducer, an input shaft, two first bevel gears, two second bevel gears and two third roller shafts; the two mounting seats are respectively fixed on the third supporting device; the rotating shaft assembly is rotatably connected to the mounting seat, and the rotating shaft assembly includes two first rotating shafts, two second rotating shafts and a third rotating shaft; the gear set includes two first gears, two second gears and a third gear, the first gear, the second gear and the third gear are respectively sleeved on the outside of the first rotating shaft, the second rotating shaft and the third rotating shaft, and the second gear is simultaneously meshed with the first gear and the third gear for transmission; the second reducer is fixed on the third supporting device; the input shaft is connected to the output end of the second reducer; the two first bevel gears are respectively sleeved on the outside of the two third rotating shafts; the two second bevel gears are respectively sleeved on both sides of the input shaft, and the second bevel gear is meshed with the first bevel gear; the two third roller shafts are respectively sleeved on the outside of the two first rotating shafts.

[0012] A method for using a large-diameter pipe butt joint machine, the method comprising the following steps: S1: The first roller supports the first pipe, and the second roller and the third roller are used together to support the second pipe, thereby ensuring the stability of the pipe during welding; S2: The first translation cylinder and the second translation cylinder are used to control the joint of the first pipeline and the second pipeline to move left and right respectively, and the first lifting cylinder and the second lifting cylinder are used to control the joint of the first pipeline and the second pipeline to move up and down respectively, so as to adjust the height and horizontal position of the first pipeline and the second pipeline respectively, ensure that the joint of the first pipeline and the second pipeline is accurately corresponding, avoid the phenomenon of misalignment and offset, and thus improve the welding quality; S3: The first supporting device and the second supporting device are controlled to move along the track respectively through the self-propelled mechanism, so that the staff can adjust the positions of the first supporting device and the second supporting device according to actual needs, so as to facilitate the supporting and docking operations of pipes of different sizes, thereby facilitating welding thereof and improving the welding effect.

[0013] Compared with the prior art, the large-diameter pipe butt joint machine and the use method of the present invention have the following beneficial effects: 1. The first supporting device is used to support the first pipeline, and the second supporting device and the third supporting device are used in combination to support the second pipeline, thereby ensuring the stability of the pipeline during the welding process.

[0014] 2. By using the first translation cylinder, the second translation cylinder, the first lifting device and the second lifting device in combination, the height and horizontal position of the first pipeline and the second pipeline can be adjusted respectively, ensuring the accuracy of the docking between the two pipelines, avoiding the occurrence of misalignment and offset, thereby improving the welding quality.

[0015] 3. By providing a self-propelled mechanism at the first supporting device and the second supporting device, the supporting position of the second pipe can be adjusted according to pipes of different lengths by controlling the movement of the second supporting device. At the same time, by controlling the movement of the first supporting device, the first pipe can be driven to move to a suitable position so that the welding points of the two pipes can be butt-jointed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a large-diameter pipe assembly machine of the present invention; Figure 2 is a front view of a first supporting device of the present invention; Figure 3 is a side view of a first supporting device of the present invention; Figure 4 is a front view of a second supporting device of the present invention; Figure 5 is a side view of a second supporting device of the present invention; Figure 6 is a front view of a third supporting device of the present invention; Figure 7 is a top view of a third supporting device of the present invention; in, Figures 1 to 7 The corresponding relationship between the reference numerals and component names in the figure is: 10 first supporting device, 11 first translation frame, 12 first translation cylinder, 13 first lifting frame, 14 second supporting device, 15 second translation frame, 16 second translation cylinder, 17 second lifting frame, 18 third supporting device, 19 first lifting cylinder, 20 first guide shaft, 21 second lifting cylinder, 22 second guide shaft, 23 first reducer, 24 walking wheel, 241 driving wheel, 242 driven wheel, 25 connecting shaft, 2 6 driving sprocket, 27 driven sprocket, 28 chain, 29 first roller, 30 second roller, 31 mounting seat, 32 rotating shaft assembly, 321 first rotating shaft, 322 second rotating shaft, 323 third rotating shaft, 33 gear set, 331 first gear, 332 second gear, 333 third gear, 34 second reducer, 35 input shaft, 36 first bevel gear, 37 second bevel gear, 38 third roller, 39 first pipeline, 40 second pipeline. DETAILED DESCRIPTION

[0017] The following is a combination of specific implementation cases and attached Figure 1-7 The present invention is further described below, but the present invention is not limited to these embodiments.

[0018] A large diameter pipe assembly machine, such as Figure 1-7 As shown, it includes: a first supporting device 10, a second supporting device 14, a third supporting device 18 and two self-propelled mechanisms; the first supporting device 10 is provided with two first roller tire rotation mechanisms, two first translation frames 11, a first translation cylinder 12, two first lifting devices and two first lifting frames 13, the first lifting device is fixed to the first supporting device 10, the working end of the first lifting device is connected to the first lifting frame 13, the first translation cylinder 12 is fixed to the first lifting frame 13, the first roller tire rotation mechanism is arranged on the first translation frame 11, the telescopic end of the first translation cylinder 12 is connected to the first translation frame 11, and the two ends of the first pipeline 39 are placed at the two first roller rotating shaft mechanisms at the same time; the second supporting device 14 is provided with two first roller tire rotation mechanisms, two first translation frames 11, a first translation cylinder 12 is provided with two first lifting devices and two first lifting frames 13, the first lifting device is fixed to the first supporting device 10, the working end of the first lifting device is connected to the first lifting frame 13, the first translation cylinder 12 is fixed to the first lifting frame 13, the first roller tire rotation mechanism is arranged on the first translation frame 11, the telescopic end of the first translation cylinder 12 is connected to the first translation frame 11, and the two ends of the first pipeline 39 are placed at the two first roller rotating shaft mechanisms at the same time; The equipment 14 is provided with a second roller tire rotation mechanism, a second translation frame 15, a second translation cylinder 16, a second lifting device and a second lifting frame 17. The second lifting device is fixed on the second supporting equipment 14, the working end of the second lifting device is connected to the second lifting frame 17, the second translation cylinder 16 is fixed on the second lifting frame 17, the second roller tire rotation mechanism is arranged on the second translation frame 15, and the telescopic end of the second translation cylinder 16 is connected to the second translation frame 15; the third supporting equipment 18 is provided with a third roller tire rotation mechanism, and the second pipeline 40 is placed at the second roller tire rotation mechanism and the third roller tire rotation mechanism at the same time; two self-propelled mechanisms are respectively arranged at the bottom of the first supporting equipment 10 and the second supporting equipment 14.

[0019] With the above structure, the first supporting device 10 supports the first pipe 39, and the second supporting device 14 and the third supporting device 18 are used in combination to support the second pipe 40, thereby ensuring the stability of the pipe during welding. By using the first translation cylinder 12, the second translation cylinder 16, the first lifting device and the second lifting device in combination, the height and horizontal position of the first pipe 39 and the second pipe 40 can be adjusted respectively to ensure the accuracy of the docking between the two pipes, thereby improving the welding quality. By providing a self-propelled mechanism at the first supporting device 10 and the second supporting device 14, the second supporting device 14 can be controlled to move to adjust the supporting position of the second pipe 40 according to pipes of different lengths. At the same time, by controlling the movement of the first supporting device 10, the first pipe 39 can be driven to move to a suitable position so that the welding points of the two pipes can be docked.

[0020] Specifically, a slideway is provided on the ground, so that the self-propelled mechanism moves along the slideway to achieve the purpose of guidance.

[0021] In an embodiment of the present invention, Figure 1-3 As shown, the first lifting device includes: a first lifting cylinder 19 and two first guide shafts 20; the first lifting cylinder 19 is fixed on the first supporting device 10, and the telescopic end of the first lifting cylinder 19 is connected to the first lifting frame 13; one end of the two first guide shafts 20 are respectively connected to the two sides of the first supporting device 10, and the telescopic ends of the two first guide shafts 20 are respectively connected to the two sides of the first lifting frame 13.

[0022] The first lifting frame 13 is controlled to move up and down by the first lifting cylinder 19 to adjust the height of the first pipe 39 supported by the first roller tire rotation mechanism, and the first guide shaft 20 guides the movement of the first lifting frame 13, thereby improving the stability of the first lifting frame 13 when moving up and down.

[0023] In an embodiment of the present invention, Figure 1-5 As shown, the second lifting device includes: a second lifting cylinder 21 and two second guide shafts 22; the second lifting cylinder 21 is fixed on the second supporting device 14, and the telescopic end of the second lifting cylinder 21 is connected to the second lifting frame 17; one end of the two second guide shafts 22 are respectively connected to the two sides of the second supporting device 14, and the telescopic ends of the two second guide shafts 22 are respectively connected to the two sides of the second lifting frame 17.

[0024] The second lifting frame 17 is controlled to move up and down by the second lifting cylinder 21 to adjust the height of the second pipe 40 supported by the second roller tire rotation mechanism, and the second guide shaft 22 guides the movement of the second lifting frame 17, thereby improving the stability of the second lifting frame 17 when moving up and down.

[0025] In an embodiment of the present invention, Figure 1-5 As shown, the self-propelled mechanism includes: a first reducer 23, a traveling wheel 24, a connecting shaft 25, a driving sprocket 26, a driven sprocket 27 and a chain 28; the first reducer 23 is fixed on the first supporting device 10 or the second supporting device 14; the traveling wheel 24 includes two driving wheels 241 and two driven wheels 242, and the two driving wheels 241 and the two driven wheels 242 are respectively arranged on the first supporting device 10 or the second supporting device 14; the two ends of the connecting shaft 25 pass through the two driving wheels 241 respectively; the driving sprocket 26 is sleeved on the outer side of the output end of the reducer; the driven sprocket 27 is sleeved on the outer side of the connecting shaft 25; the chain 28 is simultaneously wound around the outer sides of the driving sprocket 26 and the driven sprocket 27.

[0026] The first reducer 23 is used as a power source. When the first reducer 23 is running, the driven sprocket 27 is driven to rotate through the driving sprocket 26 and the chain 28, thereby rotating the connecting shaft 25, and finally driving the two driving wheels 241 forward or backward.

[0027] Specifically, the traveling wheels 24 are composed of two driving wheels 241 and two driven wheels 242, which are respectively arranged on both sides of the bottom of the supporting device. The driving wheels 241 are responsible for providing the power for movement, while the driven wheels 242 are auxiliary support and follow the driving wheels 241 to ensure the smooth movement of the entire supporting device.

[0028] In an embodiment of the present invention, Figure 1-3 As shown, the first tire rotating mechanism includes: two first roller shafts 29; two ends of the two first roller shafts 29 are rotatably connected to two sides of the first translation frame 11 respectively.

[0029] By providing two first roller tire rotation mechanisms, the first roller tire rotation mechanisms include two first roller shafts 29 , so as to achieve the purpose of supporting the two ends of the first pipe 39 respectively through the four first roller shafts 29 .

[0030] In an embodiment of the present invention, Figure 1-5 As shown, the second tire rotating mechanism includes two second roller shafts 30 ; two ends of the two second roller shafts 30 are rotatably connected to two sides of the second translation frame 15 .

[0031] One end of the second pipe 40 is supported by two second rollers 30 .

[0032] In an embodiment of the present invention, Figure 1-7As shown, the third roller tire rotation mechanism includes: two mounting seats 31, two rotating shaft assemblies 32, two gear sets 33, a second reducer 34, an input shaft 35, two first bevel gears 36, two second bevel gears 37 and two third roller shafts 38; the two mounting seats 31 are respectively fixed on the third supporting device 18; the rotating shaft assembly 32 is rotatably connected with the mounting seats 31, and the rotating shaft assembly 32 includes two first rotating shafts 321, two second rotating shafts 322 and a third rotating shaft 323; the gear set 33 includes two first gears 331, two second gears 332 and a third gear 333, and the first gear 331, the second gear 332 and the third gear 333 are connected. 2 and the third gear 333 are respectively sleeved on the outside of the first rotating shaft 321, the second rotating shaft 322 and the third rotating shaft 323, and the second gear 332 is meshed with the first gear 331 and the third gear 333 for transmission; the second reducer 34 is fixed on the third supporting device 18; the input shaft 35 is connected to the output end of the second reducer 34; the two first bevel gears 36 are respectively sleeved on the outside of the two third rotating shafts 323; the two second bevel gears 37 are respectively sleeved on both sides of the input shaft 35, and the second bevel gear 37 is meshed with the first bevel gear 36; the two third roller shafts 38 are respectively sleeved on the outside of the two first rotating shafts 321.

[0033] By using the third roller 38 and the second roller 30 in combination, the purpose of supporting the two ends of the second pipe 40 is achieved.

[0034] The second reducer 34 is used as a power source, and the power is transmitted through the gear set 33 to control the rotation of the two third rollers 38, thereby driving the second pipe 40 to rotate to a suitable position, so that it can be accurately docked with the first pipe 39, thereby improving the welding quality.

[0035] A method for using a large-diameter pipe butt joint machine comprises the following steps: S1: The first roller 29 supports the first pipe 39, and the second roller 30 and the third roller 38 are used in combination to support the second pipe 40, thereby ensuring the stability of the pipe during the welding process; S2: The first translation cylinder 12 and the second translation cylinder 16 are used to control the joint of the first pipe 39 and the second pipe 40 to move left and right, and the first lifting cylinder 19 and the second lifting cylinder 21 are used to control the joint of the first pipe 39 and the second pipe 40 to move up and down, so as to adjust the height and horizontal position of the first pipe 39 and the second pipe 40 respectively, ensure that the joint of the first pipe 39 and the second pipe 40 is accurately corresponding, avoid the phenomenon of misalignment and offset, and thus improve the welding quality; S3: The first supporting device 10 and the second supporting device 14 are controlled to move along the track respectively through the self-propelled mechanism, so that the staff can adjust the positions of the first supporting device 10 and the second supporting device 14 according to actual needs, so as to facilitate the supporting and docking operations of pipes of different sizes, thereby facilitating welding thereof and improving the welding effect.

[0036] Implementation process: The first supporting device 10 supports the first pipeline 39, and the second supporting device 14 and the third supporting device 18 are used in combination to support the second pipeline 40, thereby ensuring the stability of the pipeline during welding. The first translation cylinder 12, the second translation cylinder 16, the first lifting device and the second lifting device are used in combination to adjust the height and horizontal position of the first pipeline 39 and the second pipeline 40 respectively, ensuring the accuracy of the docking between the two pipelines, thereby improving the welding quality. By providing a self-propelled mechanism at the first supporting device 10 and the second supporting device 14, the second supporting device 14 can be controlled to move to adjust the supporting position of the second pipeline 40 according to pipelines of different lengths. At the same time, by controlling the movement of the first supporting device 10, the first pipeline 39 can be driven to move to a suitable position so that the welding points of the two pipelines can be docked.

[0037] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the description of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-diameter pipe assembly machine, characterized in that: include: A first supporting device, wherein the first supporting device is provided with two first roller tire-rotating mechanisms, two first translation frames, a first translation oil cylinder, two first lifting devices and two first lifting frames, the first lifting device is fixed on the first supporting device, the working end of the first lifting device is connected to the first lifting frame, the first translation oil cylinder is fixed on the first lifting frame, the first roller tire-rotating mechanism is arranged on the first translation frame, the telescopic end of the first translation oil cylinder is connected to the first translation frame, and both ends of the first pipeline are placed on the two first roller rotating shaft mechanisms at the same time; A second supporting device, wherein the second supporting device is provided with a second roller tire-rotating mechanism, a second translation frame, a second translation oil cylinder, a second lifting device and a second lifting frame, the second lifting device is fixed to the second supporting device, the working end of the second lifting device is connected to the second lifting frame, the second translation oil cylinder is fixed to the second lifting frame, the second roller tire-rotating mechanism is arranged on the second translation frame, and the telescopic end of the second translation oil cylinder is connected to the second translation frame; A third supporting device, wherein a third roller tire-rotating mechanism is provided on the third supporting device, and the second pipeline is placed at the second roller tire-rotating mechanism and the third roller tire-rotating mechanism at the same time; Two self-propelled mechanisms, the two self-propelled mechanisms are respectively arranged at the bottom of the first supporting device and the second supporting device.

2. A large-diameter pipe assembly machine according to claim 1, characterized in that: The first lifting device comprises: A first lifting cylinder, wherein the first lifting cylinder is fixed to the first supporting device, and a telescopic end of the first lifting cylinder is connected to the first lifting frame; Two first guide shafts, one end of the two first guide shafts are respectively connected to the two sides of the first supporting device, and the telescopic ends of the two first guide shafts are respectively connected to the two sides of the first lifting frame.

3. A large-diameter pipe butt joint machine according to claim 2, characterized in that: The second lifting device comprises: a second lifting cylinder, the second lifting cylinder being fixed to the second supporting device, and the telescopic end of the second lifting cylinder being connected to the second lifting frame; Two second guide shafts, one end of the two second guide shafts are respectively connected to the two sides of the second supporting device, and the telescopic ends of the two second guide shafts are respectively connected to the two sides of the second lifting frame.

4. A large-diameter pipe butt joint machine according to claim 3, characterized in that: The self-propelled mechanism comprises: A first reducer, wherein the first reducer is fixed to the first supporting device or the second supporting device; Traveling wheels, the traveling wheels comprising two driving wheels and two driven wheels, the two driving wheels and the two driven wheels being respectively arranged on the first supporting device or the second supporting device; A connecting shaft, both ends of which pass through the two driving wheels respectively; A driving sprocket, wherein the driving sprocket is sleeved on the outer side of the output end of the reducer; A driven sprocket, the driven sprocket is sleeved on the outside of the connecting shaft; A chain is wound around the outer sides of the driving sprocket and the driven sprocket at the same time.

5. A large-diameter pipe butt joint machine according to claim 4, characterized in that: The first roller tire rotation mechanism comprises: Two first rollers, two ends of which are rotatably connected to two sides of the first translation frame respectively.

6. A large-diameter pipe butt joint machine according to claim 5, characterized in that: The second roller tire rotation mechanism comprises: Two second rollers, two ends of which are rotatably connected to two sides of the second translation frame respectively.

7. A large-diameter pipe butt joint machine according to claim 6, characterized in that: The third roller tire rotation mechanism comprises: Two mounting seats, the two mounting seats are respectively fixed on the third supporting device; Two rotating shaft assemblies, the rotating shaft assemblies are rotatably connected to the mounting seat, and the rotating shaft assemblies include two first rotating shafts, two second rotating shafts and a third rotating shaft; Two gear sets, the gear sets comprising two first gears, two second gears and a third gear, the first gears, the second gears and the third gears are respectively sleeved on the outsides of the first rotating shaft, the second rotating shaft and the third rotating shaft, and the second gear is meshed with the first gear and the third gear for transmission; A second reducer, wherein the second reducer is fixed to the third supporting device; An input shaft connected to an output end of the second reducer; Two first bevel gears, wherein the two first bevel gears are respectively sleeved on the outer sides of the two third rotating shafts; Two second bevel gears, the two second bevel gears are respectively sleeved on both sides of the input shaft, and the second bevel gears are meshed with the first bevel gear; Two third rollers are respectively sleeved on the outsides of the two first rotating shafts.

8. A method for using a large-diameter pipe butt joint machine, applied to a large-diameter pipe butt joint machine as claimed in claims 1 to 7, characterized in that: The method of use includes the following steps: S1: The first roller supports the first pipe, and the second roller and the third roller are used together to support the second pipe, thereby ensuring the stability of the pipe during welding; S2: The first translation cylinder and the second translation cylinder are used to control the joint of the first pipeline and the second pipeline to move left and right respectively, and the first lifting cylinder and the second lifting cylinder are used to control the joint of the first pipeline and the second pipeline to move up and down respectively, so as to adjust the height and horizontal position of the first pipeline and the second pipeline respectively, ensure that the joint of the first pipeline and the second pipeline is accurately corresponding, avoid misalignment and offset, and thus improve the welding quality; S3: The first supporting device and the second supporting device are controlled to move along the track respectively through the self-propelled mechanism, so that the staff can adjust the positions of the first supporting device and the second supporting device according to actual needs, so as to facilitate the supporting and docking operations of pipes of different sizes, thereby facilitating welding thereof and improving the welding effect.

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