Welding device of stainless steel lining for composite pipeline machining

Abstract

The invention relates to the field of composite steel pipe machining, in particular to a welding device of a stainless steel lining for composite pipeline machining. The limiting moving unit is arranged on the cylindrical shell in a surrounding manner; the automatic welding unit is connected with the cylindrical shell; wherein the automatic welding unit comprises a rotary supporting assembly, a welding assembly, a cleaning and dust removing assembly and a dust suction assembly, the rotary supporting assembly is rotationally connected with the shell wall of one side of the cylindrical shell, and the welding assembly and the cleaning and dust removing assembly are arranged on the two sides of the rotary supporting assembly correspondingly and connected with the rotary supporting assembly; the cleaning and dust removing assembly is further connected with a dust suction assembly arranged on the inner side of the cylindrical shell through a rotary supporting assembly, the automatic welding unit is arranged and matched with the limiting moving unit, automatic welding of stainless steel lining plates of different sizes can be completed, the welding face can be fully cleaned before welding, the welding quality is guaranteed, and the welding efficiency is improved. And the welding efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of composite steel pipe processing, in particular to a welding device for a stainless steel liner used for composite pipeline processing. Background Art

[0002] Among the many pipe lining technologies, there is a lining technology that is often used in pipeline repair. That is, a lined pipe with a stainless steel plate as the inner lining layer is lined on the inner surface of the pipe. The diameter of this lined pipe is at least 0.5 meters and at most 4 meters. At present, the welding of stainless steel lining plates is still done by manual welding. The physical strength, construction environment and mental state of the welder will affect the welding quality. When welding in a pipe with a small space where it is difficult to spread the body, the welder will consume a lot of physical strength and the smoke and dust generated by welding are not easy to remove, making the construction environment harsh, resulting in a very low welding pass rate. Therefore, the construction period is extended and the construction cost is increased. Therefore, in view of the above situation, there is an urgent need to develop a welding device for stainless steel lining for composite pipeline processing to overcome the shortcomings in current practical applications. Summary of the Invention

[0003] The object of the present invention is to provide a welding device for stainless steel lining for composite pipeline processing to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A welding device for stainless steel lining for composite pipeline processing comprises: a cylindrical shell; a limiting movable unit, which is arranged around the cylindrical shell and connected to the cylindrical shell, and is used to cooperate with the stainless steel lining to complete the limiting support and movement of the welding device; an automatic welding unit, which is connected to the cylindrical shell, and is used to cooperate with the fixed cylindrical shell to complete the automatic welding of the stainless steel lining and the outer steel pipe; wherein, the automatic welding unit comprises: a rotating support assembly, a welding assembly, a cleaning and dust removal assembly and a dust suction assembly, the rotating support assembly is rotatably connected to the shell wall of one side of the cylindrical shell, the welding assembly and the cleaning and dust removal assembly are respectively arranged on both sides of the rotating support assembly, and are both connected to the rotating support assembly, the cleaning and dust removal assembly is also connected to the dust suction assembly arranged on the inner side of the cylindrical shell through the rotating support assembly, and the dust suction assembly is detachably connected to the rotating support assembly, and is used to cooperate with the rotating support assembly to complete the cleaning of the contact side of the stainless steel lining and the outer steel pipe.

[0005] As a further solution of the present invention: the rotating support assembly includes: a support frame, a support duct, a control motor, a driving gear, a driven gear, an air duct, a lifting frame and an electric telescoping device. The support duct is rotatably connected to the shell wall of one side of the cylindrical shell, one end of the support duct is connected to the dust suction assembly, and a support frame is fixedly provided on the outside of the other end. Lifting frames are provided at both ends of the inner side of the support frame. The lifting frames on both sides are respectively connected to the cleaning and dust removal assembly and the welding assembly, and the lifting frame and the support frame are connected through an electric telescoping device. An air duct connected to the cleaning and dust removal assembly is also fixedly provided on the support duct, and a control motor connected to the inner wall of the cylindrical shell is provided on the outside of the support duct. The output end of the control motor is fixedly connected to the driving gear, and the driving gear is meshed with a driven gear fixedly provided on the outside of the support duct, for cooperating with the support duct to realize the rotation of the cleaning and dust removal assembly and the welding assembly.

[0006] As a further solution of the present invention: the cleaning and dust removal assembly includes: a control seat, a movable frame, an air guide chamber, a fixed pipe, a dust suction pipe, a slide and a cleaning scraper. The control seat is connected to a lifting frame on one side, the control seat is slidably connected to the movable frame, a spring is fixedly provided between the movable frame and the control seat, an air guide chamber is provided inside the movable frame, the fixed pipe is fixedly connected to the control seat, one end is slidably connected to the movable frame, and the other end is slidably connected to the air guide pipe, the movable frame is away from the control seat and is slidably connected to the inner side of the frame wall, a spring is fixedly provided between the slide and the movable frame, and the other end of the slide is fixedly connected to the cleaning scraper, for cooperating with the rotation of the support frame to complete the cleaning of the welding surface, dust suction pipes fixedly connected to the movable frame are provided on both sides of the cleaning scraper, the dust suction pipes are connected to the air guide chamber, for cooperating with the dust suction assembly to complete the absorption of the cleaned debris.

[0007] As a further solution of the present invention: the dust collection assembly includes: a dust collection barrel, a dust collection pump, a touch rod, a dust collection seat, a plug-in tube, a filter frame, a rotating rod, a connecting frame, a rack, a conversion sleeve, a trigger tube, an arc-shaped control block, a piston tube, a sensing piston and a connecting rod. The dust collection barrel is arranged on the outside of the supporting guide tube and is connected to the dust collection barrel by a snap. A plug-in tube that is plugged into the supporting guide tube is provided on the dust collection barrel. The other end of the dust collection barrel is threadedly connected to the dust collection seat. A dust collection pump is fixedly connected to the outside of the dust collection seat. The input end of the dust collection pump is connected to the inside of the dust collection seat, and a filter frame fixedly connected to the dust collection seat is provided on the outside. A connecting frame connected to the dust collection barrel is provided on the outside of the filter frame. A rotating rod is rotatably provided on the connecting frame. Several cleaning brushes are arranged around the outside of the rod, the cleaning brushes are fixedly connected to the rotating rod and abut against the installed filter frame, a conversion sleeve is fixedly arranged on the outside of the dust collecting barrel, a piston tube is fixedly connected between the conversion sleeve and the dust collecting barrel, a sensing piston is slidingly connected on the inside of the piston tube, the sensing piston is connected to the rack through a connecting rod, and the rack is meshed with a transmission gear arranged on the outside of the rotating rod, a trigger tube is also fixedly connected to the conversion sleeve, an arc control block is provided on the outside of the trigger tube, the arc control block and the trigger tube are connected by a piston member, a touch rod connected to the cylindrical shell is provided on the outside of the conversion sleeve, which is used to cooperate with the rotation of the conversion sleeve to realize the cleaning of the filter frame by the cleaning brush.

[0008] As a further solution of the present invention: the welding assembly includes: a connecting seat, an adjustment motor, a support rod, a support plate and a welding gun. The connecting seat is connected to the lifting frame on the other side. The adjustment motor is fixedly arranged on the inner side of the connecting seat. The output end of the adjustment motor is fixedly connected to the support rod. The support plate is fixedly connected to the outer side of the support rod, and the welding gun is installed on the support plate.

[0009] As a further solution of the present invention: the limit movement unit includes: a power supply motor, a threaded rod, an annular frame, a caster assembly and a force guide rod. The annular frame is symmetrically arranged on the inner side of the cylindrical shell and is slidingly connected to the inner wall of the cylindrical shell. Several threaded rods are rotatably arranged on the inner side of the cylindrical shell and are distributed equidistantly in a ring shape. The threaded rods are connected by belts, and the other end of one of the threaded rods is connected to the output end of the power supply motor. The power supply motor is fixedly arranged on the inner side of the cylindrical shell and is used to cooperate with the threaded rods to drive the annular frames on both sides to perform synchronous movement in opposite directions. Several caster assemblies are also arranged around the outside of the cylindrical shell. The caster assemblies are connected to the cylindrical shell and to the force guide rod set on the annular frame, so as to cooperate with the movement of the annular frame to realize the retraction and extension of the caster assembly.

[0010] As a further solution of the present invention: the caster assembly includes: a mounting seat, a slider, a control rod, a caster box and an electric wheel, the mounting seat is fixedly arranged on the outside of the cylindrical shell, the slider is symmetrically arranged on the inside of the mounting seat, the slider is slidingly connected to the mounting seat, and is connected to the guide rod on the annular frame on the same side, the mounting seat is provided with a caster box on the outside of one end away from the cylindrical shell, the electric wheel is symmetrically arranged on the inside of the caster box, the electric wheel is connected to the caster box, control rods are arranged between the caster box and the sliders on both sides, one end of the control rod is rotatably connected to the caster box, and the other end is rotatably connected to the slider.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The welding device is placed in the stainless steel lining, and the limiting moving unit cooperates with the stainless steel lining to support and limit the equipment, and can also realize the stable movement of the equipment in the pipeline. When the equipment moves to the welding point, the cleaning and dust removal component is first controlled to contact the welding surface. At the same time, the dust suction component is started, and the rotating support component drives the cleaning and dust removal component to rotate, thereby cleaning the welding surface. Subsequently, the welding component is aligned with the welding position, and the rotating support component drives the welding component to rotate. The welding of the stainless steel lining and the outer steel pipe is completed by spot welding first and then overall welding. This application sets an automatic welding unit and cooperates with the limiting moving unit to complete the automatic welding of stainless steel lining plates of different sizes. Moreover, the welding surface can be fully cleaned before welding to ensure the welding quality and greatly improve the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the welding device for stainless steel lining used in composite pipeline processing.

[0013] Figure 2 A cross-sectional view of a welding device for stainless steel lining used in composite pipe processing.

[0014] Figure 3 This is a schematic diagram of the structure of the rotating support assembly in the welding device for stainless steel lining used in composite pipe processing.

[0015] Figure 4 A cross-sectional view of a rotary support assembly in a welding apparatus for stainless steel lining for composite pipe fabrication.

[0016] Figure 5 This is a schematic diagram of the structure of the welding components in the welding device for stainless steel lining used in composite pipeline processing.

[0017] Figure 6 This is a schematic diagram of the structure of the cleaning and dust removal components in the welding device for stainless steel lining used in composite pipeline processing.

[0018] Figure 7 This is a schematic diagram of the structure of the dust collection component in the welding device of the stainless steel lining for composite pipe processing.

[0019] Figure 8 A cross-sectional view of a dust extraction assembly in a welding apparatus for stainless steel lining for composite pipe processing.

[0020] Figure 9 A cross-sectional view of a transition box in a welding device for stainless steel lining used in composite pipe processing.

[0021] Figure 10 for Figure 9 Schematic diagram of the enlarged structure at point A in the middle.

[0022] Figure 11 This is a structural schematic diagram of the limit movement unit in the welding device for stainless steel lining used in composite pipeline processing.

[0023] Figure 12 This is a schematic diagram of the structure of the caster assembly in the welding device of the stainless steel lining for composite pipe processing.

[0024] In the figure: 1. cylindrical shell; 2. limit moving unit; 3. cover plate; 4. automatic welding unit; 5. rotating support assembly; 6. welding assembly; 7. cleaning and dust removal assembly; 8. dust collection assembly; 9. support frame; 10. support duct; 11. control motor; 12. driving gear; 13. driven gear; 14. air guide tube; 15. lifting frame; 16. electric telescopic device; 17. connecting seat; 18. direction adjustment motor; 19. support rod; 20. support plate; 21. welding gun; 22. control seat; 23. movable frame; 24. air guide chamber; 25. fixed pipe; 26. dust collection pipe; 27. sliding Frame; 28. Cleaning scraper; 29. ​​Dust collecting cylinder; 30. Dust suction pump; 31. Touch control rod; 32. Dust suction base; 33. Plug-in tube; 34. Filter frame; 35. Rotating rod; 36. Connecting frame; 37. Rack; 38. Conversion sleeve; 39. Trigger tube; 40. Arc control block; 41. Piston; 42. Piston tube; 43. Induction piston; 44. Connecting rod; 45. Power supply motor; 46. Threaded rod; 47. Ring frame; 48. Caster assembly; 49. Mounting seat; 50. Slider; 51. Guide rod; 52. Control rod; 53. Caster box; 54. Electric wheel; 55. Belt. DETAILED DESCRIPTION

[0025] The technical solution of this application is further described in detail below in conjunction with specific implementation methods.

[0026] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0027] See also Figure 1 and Figure 2 In one embodiment of the present invention, a welding device for a stainless steel liner for composite pipe processing includes: a cylindrical shell 1; a limiting movement unit 2, which is arranged around the cylindrical shell 1 and connected to the cylindrical shell 1, and is used to cooperate with the stainless steel liner to complete the limiting support and movement of the welding device; an automatic welding unit 4, which is connected to the cylindrical shell 1 and is used to cooperate with the fixed cylindrical shell 1 to complete the automatic welding of the stainless steel liner and the outer steel pipe; wherein the automatic welding unit 4 includes: a rotating support assembly 5, a welding assembly 6, a cleaning and dust removal assembly 7 and a dust suction assembly 8, the rotating support assembly 5 is rotatably connected to the shell wall of one side of the cylindrical shell 1, the welding assembly 6 and the cleaning and dust removal assembly 7 are respectively arranged on both sides of the rotating support assembly 5, and are both connected to the rotating support assembly 5, the cleaning and dust removal assembly 7 is also connected to the dust suction assembly 8 arranged on the inner side of the cylindrical shell 1 through the rotating support assembly 5, and the dust suction assembly 8 is detachably connected to the rotating support assembly 5, and is used to cooperate with the rotating support assembly 5 to complete the cleaning of the contact side of the stainless steel liner and the outer steel pipe.

[0028] In this embodiment, when the device is running, the welding device is placed in the stainless steel lining, and the limiting moving unit 2 cooperates with the stainless steel lining to complete the support and limitation of the equipment, and can also realize the stable movement of the equipment in the pipeline. When the equipment moves to the welding point, the cleaning and dust removal component 7 is first controlled to contact the welding surface. At the same time, the dust suction component 8 is started, and the rotating support component 5 drives the cleaning and dust removal component 7 to rotate, thereby cleaning the welding surface. Subsequently, the welding component 6 is aligned with the welding position, and the rotating support component 5 drives the welding component 6 to rotate. The welding of the stainless steel lining and the outer steel pipe is completed by spot welding first and then overall welding. This application sets an automatic welding unit 4 and cooperates with the limiting moving unit 2 to complete the automatic welding of stainless steel lining plates of different sizes. Moreover, the welding surface can be fully cleaned before welding to ensure the welding quality and greatly improve the welding efficiency.

[0029] In one embodiment of the present invention, please refer to Figure 2 、 Figure 3 and Figure 4, the rotating support assembly 5 includes: a support frame 9, a support duct 10, a control motor 11, a driving gear 12, a driven gear 13, an air duct 14, a lifting frame 15 and an electric retractor 16. The support duct 10 is rotatably connected to the shell wall of one side of the cylindrical shell 1, one end of the support duct 10 is connected to the dust collection assembly 8, and the other end is fixedly provided with a support frame 9 on the outside. Lifting frames 15 are provided at both ends of the inner side of the support frame 9. The lifting frames 15 on both sides are respectively connected to the cleaning and dust removal assembly 7 and the welding assembly 6. The lifting frames 15 and the support frame 9 are connected through an electric retractor 16. The support duct 10 is also fixedly provided with an air duct 14 connected to the cleaning and dust removal assembly 7. The outside of the support duct 10 is provided with a control motor 11 connected to the inner wall of the cylindrical shell 1. The output end of the control motor 11 is fixedly connected to the driving gear 12, and the driving gear 12 is meshed with the driven gear 13 fixedly provided on the outside of the support duct 10, for cooperating with the support duct 10 to realize the rotation of the cleaning and dust removal assembly 7 and the welding assembly 6.

[0030] In this embodiment, the electric telescopic device 16 is an electric push rod, which is used to control the lifting frame 15 to rise and fall, so that the cleaning and dust removal component 7 and the welding component 6 can be stably connected to the welding point, and the control motor 11 drives the driving gear 12 to rotate. The driving gear 12 cooperates with the driven gear 13 to realize the self-rotation of the support guide tube 10, and the support guide tube 10 drives the support frame 9 to rotate. The support frame 9 cooperates with the lifting frame 15 to drive the cleaning and dust removal component 7 and the welding component 6 to rotate synchronously. The cleaning and dust removal component 7 can comprehensively clean the welding point, and the welding component 6 can complete the comprehensive welding of the lining. At the same time, the dust suction component 8 can cooperate with the support guide tube 10 and the air duct 14 to realize the automatic absorption of the cleaned dust by the cleaning and dust removal component 7, thereby avoiding secondary pollution of the welding point by dust and impurities, ensuring the effectiveness of cleaning, and thus ensuring the welding quality.

[0031] In one embodiment of the present invention, please refer to Figure 4 and Figure 6The cleaning and dust removal assembly 7 includes: a control seat 22, a movable frame 23, an air guide cavity 24, a fixed pipe 25, a dust suction pipe 26, a slide 27 and a cleaning scraper 28. The control seat 22 is connected to the lifting frame 15 on one side, the control seat 22 is slidably connected to the movable frame 23, and a spring is fixedly provided between the movable frame 23 and the control seat 22. The air guide cavity 24 is provided inside the movable frame 23. The fixed pipe 25 is fixedly connected to the control seat 22, one end of which is slidably connected to the movable frame 23, and the other end is connected to the air guide. The tube 14 is slidably connected, and a slide 27 is provided on the inner side of the frame wall of the movable frame 23 away from the control seat 22, and a spring is fixedly connected between the slide 27 and the movable frame 23. The other end of the slide 27 is fixedly connected to the cleaning scraper 28, which is used to cooperate with the rotation of the support frame 9 to complete the cleaning of the welding surface. Dust suction pipes 26 fixedly connected to the movable frame 23 are provided on both sides of the cleaning scraper 28. The dust suction pipes 26 are connected to the air guide cavity 24, which are used to cooperate with the dust suction component 8 to complete the absorption of the cleaned debris.

[0032] In this embodiment, the cleaning scraper 28 is an L-shaped structure. When the equipment moves to the welding position, the electric telescoping device 16 cooperates with the lifting frame 15 to drive the control seat 22 to move close to the welding point, so that the top of the cleaning scraper 28 abuts against the inner wall of the outer steel pipe. Then the equipment moves horizontally so that the side wall of the cleaning scraper 28 abuts against the end of the stainless steel lining. The support frame 9 rotates under the drive of the support duct 10, and the support frame 9 drives the cleaning scraper 28 to rotate. The welding surface is cleaned during the rotation process. At the same time, the dust suction component 8 can extract the air inside the air guide cavity 24, and use the dust suction pipe 26 to absorb the cleaned debris. Impurities are sucked into the inside of the air guide cavity 24 and enter the inside of the dust suction component 8 along the support duct 10. The dust suction component 8 is used to recycle and collect impurities. By setting the cleaning dust removal component 7, the welding surface can be cleaned, thereby ensuring the reliability and quality of subsequent welding.

[0033] In one embodiment of the present invention, please refer to Figure 7 、 Figure 8 、 Figure 9 and Figure 10The dust collection assembly 8 includes: a dust collecting barrel 29, a dust collecting pump 30, a touch rod 31, a dust collecting seat 32, a plug-in tube 33, a filter frame 34, a rotating rod 35, a connecting frame 36, a rack 37, a conversion sleeve 38, a trigger tube 39, an arc control block 40, a piston tube 42, a sensing piston 43 and a connecting rod 44. The dust collecting barrel 29 is arranged on the outside of the support guide tube 10 and is connected to the dust collecting barrel 29 by a snap. A plug-in tube 33 that is plugged into the support guide tube 10 is provided. The other end of the dust collecting barrel 29 is threadedly connected to the dust collecting seat 32. A dust collecting pump 30 is fixedly connected to the outside of the dust collecting seat 32. The input end of the dust collecting pump 30 is connected to the inner side of the dust collecting seat 32, and a filter frame 34 fixedly connected to the dust collecting seat 32 is provided on the outside. A connecting frame 36 connected to the dust collecting barrel 29 is provided on the outside of the filter frame 34. A rotating rod 35 is rotatably provided on the connecting frame 36. , a number of cleaning brushes are arranged around the outside of the rotating rod 35, the cleaning brushes are fixedly connected to the rotating rod 35, and abut against the installed filter frame 34, a conversion sleeve 38 is fixedly provided on the outside of the dust collecting barrel 29, a piston tube 42 is fixedly connected between the conversion sleeve 38 and the dust collecting barrel 29, a sensing piston 43 is slidably connected on the inside of the piston tube 42, the sensing piston 43 is connected to the rack 37 through a connecting rod 44, and the rack 37 is meshed with a transmission gear arranged on the outside of the rotating rod 35, a trigger tube 39 is also fixedly connected to the conversion sleeve 38, an arc control block 40 is provided on the outside of the trigger tube 39, and the arc control block 40 is connected to the trigger tube 39 through a piston member 41, and a touch rod 31 connected to the cylindrical shell 1 is provided on the outside of the conversion sleeve 38, which is used to cooperate with the rotation of the conversion sleeve 38 to realize the cleaning of the filter frame 34 by the cleaning brush.

[0034] In this embodiment, the piston member 41 includes a piston slidably connected to the inner side of the trigger tube 39 and a push rod fixedly connected to the piston. The push rod is fixedly connected to the arc control block 40. A guide groove is provided on the rod wall of the push rod. A guide block is slidably connected to the inner side of the guide groove. The guide block is fixedly connected to the inner wall of the trigger tube 39. When the dust collection component 8 is in operation, the dust collection barrel 29 is threadedly connected to the dust collection seat 32, and the plug-in tube 33 is inserted into the inner side of the support guide tube 10. The dust collection barrel 29 and the support guide tube 10 are connected by a snap-fit ​​installation. When the support guide tube 10 rotates, the dust collection barrel 29 and the dust collection seat 32 are driven to rotate synchronously. When the cleaning scraper 28 cleans the welding surface, the dust suction pump 30 runs at the same time to absorb dust and debris. The absorbed dust enters the inner side of the dust collection barrel 29 along the support guide tube 10, and the filter frame 34 filters the dust. The filtered air is discharged from The dust suction pump 30 is discharged, and when the dust collecting barrel 29 rotates, the arc-shaped control block 40 will contact the touch rod 31, realizing the movement of the piston inside the trigger tube 39, and then realizing the flow of air inside the conversion sleeve 38, thereby realizing the movement of the sensing piston 43 inside the piston tube 42, and the sensing piston 43 drives the rack 37 to move through the connecting rod 44, and the rack 37 cooperates with the transmission gear to realize the rotation of the rotating rod 35. The rotating rod 35 completes the cleaning of the surface of the filter frame 34 through the cleaning brush to avoid dust accumulation on the surface of the filter frame 34, thereby ensuring the stability of dust collection. The present application sets a dust collection component 8, which can cooperate with the rotating support component 5 and the cleaning and dust removal component 7 to complete the cleaning and absorption of dust on the welding surface, and can also cooperate with the rotation of the support guide tube 10 to complete the automatic cleaning of the filter frame 34, thereby ensuring the stability of the equipment during operation and effectively improving the welding quality of the equipment.

[0035] In one embodiment of the present invention, please refer to Figure 4 and Figure 5 The welding assembly 6 includes: a connecting seat 17, an adjustment motor 18, a support rod 19, a support plate 20 and a welding gun 21. The connecting seat 17 is connected to the lifting frame 15 on the other side. The adjustment motor 18 is fixedly installed on the inner side of the connecting seat 17. The output end of the adjustment motor 18 is fixedly connected to the support rod 19. The support plate 20 is fixedly connected to the outer side of the support rod 19. The welding gun 21 is installed on the support plate 20.

[0036] In this embodiment, when the welding surface is cleaned, the lifting frame 15 connected to the connecting seat 17 realizes the lifting and lowering of the welding gun 21 under the drive of the corresponding electric telescopic device 16. At the same time, the direction adjustment motor 18 can drive the support rod 19 to rotate, and the support rod 19 drives the support plate 20 to rotate to adjust the welding angle of the welding gun 21. Through the above adjustment, the welding gun 21 can be accurately aligned with the joint between the stainless steel lining and the outer steel pipe. The support frame 9 rotates, and the welding gun 21 rotates synchronously with the support frame 9 to complete the welding of the stainless steel lining and the outer steel pipe. By setting up the welding assembly 6, the rotating support assembly 5 can be cooperated with to realize automatic welding of the stainless steel lining and the outer steel pipe, which solves the problem that it is difficult for manual labor to spread out the body in a narrow space, the physical exertion of the welder is large when welding in the pipeline, and the smoke and dust generated by welding are not easy to be removed, making the construction environment harsh, resulting in a very low welding pass rate, extending the construction period, and increasing the construction cost, thereby greatly improving the welding efficiency.

[0037] In one embodiment of the present invention, please refer to Figure 11 and Figure 12 The limited movement unit 2 includes: an energy supply motor 45, a threaded rod 46, an annular frame 47, a caster assembly 48 and a guide rod 51. The annular frame 47 is symmetrically arranged on the inner side of the cylindrical shell 1 and is slidingly connected to the inner wall of the cylindrical shell 1. Several threaded rods 46 are rotatably arranged on the inner side of the cylindrical shell 1 and are distributed equidistantly in a ring shape. The threaded rods 46 are connected by a belt member 55, and the other end of one of the threaded rods 46 is connected to the output end of the energy supply motor 45. The energy supply motor 45 is fixedly arranged on the inner side of the cylindrical shell 1, and is used to cooperate with each threaded rod 46 to drive the annular frames 47 on both sides to perform synchronous movement in opposite directions. Several caster assemblies 48 are also arranged around the outside of the cylindrical shell 1. The caster assembly 48 is connected to the cylindrical shell 1 and is connected to the guide rod 51 set on the annular frame 47, and is used to cooperate with the movement of the annular frame 47 to realize the retraction and extension of the caster assembly 48.

[0038] In this embodiment, the belt member 55 includes a pulley fixedly connected to the outside of each threaded rod 46 and a belt for connecting the pulleys. The power supply motor 45 drives a threaded rod 46 to rotate, and the threaded rod 46 realizes the synchronous rotation of each threaded rod 46 through the pulley and the belt. The number of the threaded rods 46 is three, and the threads on the outside of the two ends of the threaded rod 46 are in opposite directions. When the threaded rod 46 rotates, it can drive the annular frames 47 on both sides to perform synchronous movement in opposite directions. The annular frames 47 complete the drive of the caster assembly 48 through the guide rod 51, and the caster assembly 48 is retracted and extended, and cooperates with the stainless steel lining to complete the support and limitation of the equipment. At the same time, it can realize the movement of the equipment in the pipeline. By setting the limiting movement unit 2, the equipment can be stably moved in pipelines of different sizes, thereby enhancing the applicability of the equipment, and cooperates with the automatic welding unit 4 to realize automatic welding of the stainless steel lining and the outer steel pipe.

[0039] In one embodiment of the present invention, please refer to Figure 12 The caster assembly 48 includes: a mounting seat 49, a slider 50, a control rod 52, a caster box 53 and an electric wheel 54. The mounting seat 49 is fixedly arranged on the outside of the cylindrical shell 1, and the slider 50 is symmetrically arranged on the inner side of the mounting seat 49. The slider 50 is slidably connected to the mounting seat 49 and is connected to the guide rod 51 on the annular frame 47 on the same side. A caster box 53 is arranged on the outer side of the end of the mounting seat 49 away from the cylindrical shell 1, and an electric wheel 54 is symmetrically arranged on the inner side of the caster box 53. The electric wheel 54 is connected to the caster box 53. A control rod 52 is arranged between the caster box 53 and the sliders 50 on both sides. One end of the control rod 52 is rotatably connected to the caster box 53, and the other end is rotatably connected to the slider 50.

[0040] In this embodiment, the number of the mounting seats 49 is also three. When the annular frame 47 moves, the synchronous movement of the slider 50 can be achieved through the guide rod 51. The slider 50 realizes the retraction and extension of the caster box 53 through the transmission rod 52. The electric wheel 54 includes an electric caster and a steering machine for controlling the steering of the electric caster. The steering machine is fixedly connected to the caster box 53, and the output end of the steering machine is connected to the electric caster. The contact surface between the electric caster and the stainless steel lining is made of anti-slip material, which ensures the stability of the equipment moving inside the pipeline. By setting the caster assembly 48 and utilizing the movement of the annular frame 47, the retraction and extension of the caster box 53 can be completed. The electric wheel 54 abuts against the stainless steel lining to complete the support and limitation of the equipment, and can also achieve movement in the pipeline, thereby ensuring the accuracy of welding.

[0041] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 A cover plate 3 is clamped on the shell wall of the cylindrical shell 1 away from the support frame 9. By setting the cover plate 3, it is convenient for people to replace and clean the dust collecting cylinder 29, thereby ensuring the stability of the equipment during cleaning.

[0042] The welding device for stainless steel lining for composite pipe processing is placed in the pipe. The power supply motor 45 drives a threaded rod 46 to rotate. The threaded rod 46 realizes the synchronous rotation of each threaded rod 46 through a pulley and a belt. There are three threaded rods 46. The threads on the outer sides of the two ends of the threaded rod 46 are in opposite directions. When the threaded rod 46 rotates, it can drive the annular frames 47 on both sides to perform synchronous movement in opposite directions. The annular frames 47 realize the synchronous movement of the slider 50 through the guide rod 51. The slider 50 realizes the retraction and extension of the caster box 53 through the transmission rod 52. The electric wheel 54 abuts against the stainless steel lining to complete the work. The equipment is supported and limited, and the equipment is moved in the pipeline. When it moves to the welding position, the electric telescopic device 16 cooperates with the lifting frame 15 to drive the control seat 22 to move close to the welding position, so that the top of the cleaning scraper 28 abuts against the inner wall of the outer steel pipe. Then the equipment moves horizontally, so that the side wall of the cleaning scraper 28 abuts against the end of the stainless steel lining. The control motor 11 drives the driving gear 12 to rotate, and the driving gear 12 cooperates with the driven gear 13 to realize the self-rotation of the support guide tube 10. The support guide tube 10 drives the support frame 9 to rotate, and the support frame 9 drives the cleaning scraper 28 to rotate. During the rotation, the welding surface is cleaned and dust is sucked away. The pump 30 runs at the same time to absorb dust and debris. The absorbed dust enters the inner side of the dust collecting cylinder 29 along the support guide 10. The filter frame 34 filters the dust. The filtered air is discharged from the dust suction pump 30. When the dust collecting cylinder 29 rotates, the arc control block 40 contacts the touch rod 31 to realize the movement of the piston inside the trigger tube 39, thereby realizing the flow of air inside the conversion sleeve 38, thereby realizing the movement of the sensing piston 43 inside the piston tube 42. The sensing piston 43 drives the rack 37 to move through the connecting rod 44. The rack 37 cooperates with the transmission gear to realize the rotation of the rotating rod 35. The rotating rod 35 passes through the cleaning The brush completes the cleaning of the surface of the filter frame 34 to prevent dust from accumulating on the surface of the filter frame 34. When the welding surface is cleaned, the lifting frame 15 connected to the connecting seat 17 realizes the lifting of the welding gun 21 under the drive of the corresponding electric telescoping device 16. At the same time, the direction adjustment motor 18 can drive the support rod 19 to rotate, and the support rod 19 drives the support plate 20 to rotate to adjust the welding angle of the welding gun 21. Through the above adjustment, the welding gun 21 can be accurately aligned with the joint between the stainless steel lining and the outer steel pipe. The support frame 9 rotates, and the welding gun 21 rotates synchronously with the support frame 9 to complete the welding of the stainless steel lining and the outer steel pipe.

[0043] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A welding device for stainless steel lining for composite pipe processing, characterized in that: include: cylindrical shell; A position limiting and moving unit, which is disposed around the cylindrical shell and connected to the cylindrical shell, and is used to cooperate with the stainless steel lining to complete the position limiting support and movement of the welding device; An automatic welding unit, connected to the cylindrical shell, for automatically welding the stainless steel lining and the outer steel pipe in cooperation with the fixed cylindrical shell; Among them, the automatic welding unit includes: a rotating support assembly, a welding assembly, a cleaning and dust removal assembly and a dust suction assembly. The rotating support assembly is rotatably connected to the shell wall of one side of the cylindrical shell. The welding assembly and the cleaning and dust removal assembly are respectively arranged on both sides of the rotating support assembly and are both connected to the rotating support assembly. The cleaning and dust removal assembly is also connected to the dust suction assembly arranged on the inner side of the cylindrical shell through the rotating support assembly. The dust suction assembly is detachably connected to the rotating support assembly and is used to cooperate with the rotating support assembly to complete the cleaning of the contact side of the stainless steel lining and the outer steel pipe.

2. The welding device for stainless steel lining for composite pipe processing according to claim 1, characterized in that: The rotating support assembly includes: a support frame, a support duct, a control motor, a driving gear, a driven gear, an air duct, a lifting frame and an electric telescoping device. The support duct is rotatably connected to the shell wall of one side of the cylindrical shell, one end of the support duct is connected to the dust collection assembly, and the other end is fixedly provided with a support frame on the outside, and lifting frames are provided at both ends of the inner side of the support frame. The lifting frames on both sides are respectively connected to the cleaning and dust removal assembly and the welding assembly, and the lifting frame and the support frame are connected through an electric telescoping device. An air duct connected to the cleaning and dust removal assembly is also fixedly provided on the support duct, and a control motor connected to the inner wall of the cylindrical shell is provided on the outside of the support duct. The output end of the control motor is fixedly connected to the driving gear, and the driving gear is meshed with a driven gear fixedly provided on the outside of the support duct, for cooperating with the support duct to realize the rotation of the cleaning and dust removal assembly and the welding assembly.

3. The welding device for stainless steel lining for composite pipe processing according to claim 2, characterized in that: The cleaning dust removal assembly includes: a control seat, a movable frame, an air guide chamber, a fixed tube, a dust suction tube, a slide and a cleaning scraper. The control seat is connected to a lifting frame on one side, the control seat is slidably connected to the movable frame, a spring is fixedly provided between the movable frame and the control seat, an air guide chamber is provided inside the movable frame, the fixed tube is fixedly connected to the control seat, one end is slidably connected to the movable frame, and the other end is slidably connected to the air guide tube, the movable frame is away from the control seat and is slidably connected to the inner wall of the frame, a spring is fixedly provided between the slide and the movable frame, and the other end of the slide is fixedly connected to the cleaning scraper for cooperating with the rotation of the support frame to complete the cleaning of the welding surface, dust suction tubes fixedly connected to the movable frame are provided on both sides of the cleaning scraper, and the dust suction tubes are connected to the air guide chamber for cooperating with the dust suction assembly to complete the absorption of the cleaned debris.

4. The welding device for stainless steel lining for composite pipe processing according to claim 3, characterized in that: The dust collection assembly includes: a dust collection barrel, a dust collection pump, a touch control rod, a dust collection seat, a plug-in tube, a filter frame, a rotating rod, a connecting frame, a rack, a conversion sleeve, a trigger tube, an arc-shaped control block, a piston tube, a sensing piston and a connecting rod. The dust collection barrel is arranged on the outside of the supporting duct and is connected to the dust collection barrel by a snap. A plug-in tube that is plugged into the supporting duct is provided on the dust collection barrel. The other end of the dust collection barrel is threadedly connected to the dust collection seat. A dust collection pump is fixedly connected to the outside of the dust collection seat. The input end of the dust collection pump is connected to the inside of the dust collection seat, and a filter frame fixedly connected to the dust collection seat is provided on the outside. A connecting frame connected to the dust collection barrel is provided on the outside of the filter frame. A rotating rod is rotatably provided on the connecting frame. Several cleaning brushes are provided, which are fixedly connected to the rotating rod and abut against the installed filter frame. A conversion sleeve is fixedly provided on the outside of the dust collecting barrel, and a piston tube is fixedly connected between the conversion sleeve and the dust collecting barrel. A sensing piston is slidably connected on the inside of the piston tube. The sensing piston is connected to the rack through a connecting rod, and the rack is meshed with a transmission gear provided on the outside of the rotating rod. A trigger tube is also fixedly connected to the conversion sleeve, and an arc-shaped control block is provided on the outside of the trigger tube. The arc-shaped control block is connected to the trigger tube through a piston member. A touch rod connected to the cylindrical shell is provided on the outside of the conversion sleeve, which is used to cooperate with the rotation of the conversion sleeve to realize the cleaning of the filter frame by the cleaning brush.

5. The welding device for stainless steel lining for composite pipe processing according to claim 4, characterized in that: The welding assembly includes: a connecting seat, a direction adjustment motor, a support rod, a support plate and a welding gun. The connecting seat is connected to the lifting frame on the other side. The direction adjustment motor is fixedly arranged on the inner side of the connecting seat. The output end of the direction adjustment motor is fixedly connected to the support rod. The support plate is fixedly connected to the outer side of the support rod, and the welding gun is installed on the support plate.

6. The welding device for stainless steel lining for composite pipe processing according to claim 1, characterized in that: The limited movement unit includes: a power supply motor, a threaded rod, a ring frame, a caster assembly and a guide rod. The ring frame is symmetrically arranged on the inner side of the cylindrical shell and is slidingly connected to the inner wall of the cylindrical shell. Several threaded rods are rotatably arranged on the inner side of the cylindrical shell and are distributed equidistantly in a ring shape. The threaded rods are connected by belts, and the other end of one of the threaded rods is connected to the output end of the power supply motor. The power supply motor is fixedly arranged on the inner side of the cylindrical shell and is used to cooperate with the threaded rods to drive the ring frames on both sides to perform synchronous movement in opposite directions. Several caster assemblies are also arranged around the outside of the cylindrical shell. The caster assemblies are connected to the cylindrical shell and to the guide rods set on the ring frame, so as to cooperate with the movement of the ring frame to realize the retraction and extension of the caster assemblies.

7. The welding device for stainless steel lining for composite pipe processing according to claim 6, characterized in that: The caster assembly includes: a mounting seat, a slider, a control rod, a caster box and an electric wheel. The mounting seat is fixedly arranged on the outside of the cylindrical shell, and the slider is symmetrically arranged on the inside of the mounting seat. The slider is slidably connected to the mounting seat and is connected to the guide rod on the annular frame on the same side. The caster box is arranged on the outside of one end of the mounting seat away from the cylindrical shell, and the electric wheel is symmetrically arranged on the inside of the caster box. The electric wheel is connected to the caster box. Control rods are arranged between the caster box and the sliders on both sides. One end of the control rod is rotatably connected to the caster box, and the other end is rotatably connected to the slider.

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