A welding device for a stainless steel lining of a composite pipe

Abstract

The present application relates to the field of composite steel pipe processing, and specifically relates to a stainless steel lining welding device for composite pipe processing, comprising: a cylindrical shell; a limiting movement unit, which is arranged around the cylindrical shell; and an automatic welding unit, which is connected with the cylindrical shell; 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 rotationally connected with one side of the shell wall of the cylindrical shell; the welding assembly and the cleaning and dust removal assembly are respectively arranged on the two sides of the rotating support assembly and are connected with the rotating support assembly; the cleaning and dust removal assembly is further connected with the dust suction assembly arranged on the inner side of the cylindrical shell through the rotating support assembly; through the automatic welding unit and the limiting movement unit, automatic welding of stainless steel lining plates of different sizes can be completed, the welding surface can be fully cleaned before welding, the welding quality is ensured, and the welding efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of composite steel pipe processing, in particular to a stainless steel lining welding device for composite pipe processing. BACKGROUND

[0002] Among the many pipe lining technologies, one is often used in pipe repair, which is to line the inner surface of the pipe with a layer of stainless steel plate as the inner lining layer. The diameter of this lining pipe is 0.5 meters at the minimum and up to 4 meters at the maximum. Currently, the welding of stainless steel lining plate is still done manually. The physical strength, construction environment and mental state of the welder will affect the welding quality. When welding in a narrow space where it is not easy to spread the body, the welder's physical strength is consumed and the smoke and dust generated by welding are not easy to remove, making the construction environment poor, resulting in a very low one-time welding pass rate. Therefore, the construction cycle is prolonged and the construction cost is increased. Therefore, in view of the above status, it is urgent to develop a stainless steel lining welding device for composite pipe processing to overcome the shortcomings in current practical applications. SUMMARY

[0003] The purpose of the present application is to provide a stainless steel lining welding device for composite pipe processing to solve the problems raised in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A stainless steel lining welding device for composite pipe processing, comprising: a cylindrical shell; a limiting moving unit, which is arranged around the cylindrical shell and connected to the cylindrical shell, 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, used to cooperate with the fixed cylindrical shell to complete the automatic welding of the stainless steel lining and the outer layer 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 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 connected to the rotating support assembly, the cleaning and dust removal assembly is further 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, used to cooperate with the rotating support assembly to complete the cleaning of the contact side of the stainless steel lining and the outer layer steel pipe.

[0006] As a further scheme of the present application: the rotating support assembly comprises a support frame, a support conduit, a control motor, a driving gear, a driven gear, an air guide pipe, a lifting frame and an electric telescopic device, the support conduit is rotationally connected with one side of the shell wall of the cylindrical shell, one end of the support conduit is connected with the dust collection assembly, the other end of the support conduit is fixedly provided with the support frame on the outer side, the inner side of the support frame is provided with the lifting frame at both ends, the lifting frames on both sides are respectively connected with the cleaning and dust removal assembly and the welding assembly, the lifting frame and the support frame are connected through the electric telescopic device, the air guide pipe connected with the cleaning and dust removal assembly is further fixedly provided on the support conduit, the control motor connected with the inner wall of the cylindrical shell is provided on the outer side of the support conduit, the output end of the control motor is fixedly connected with the driving gear, the driving gear is meshingly connected with the driven gear fixedly provided on the outer side of the support conduit, and the driving gear is used for cooperating with the support conduit to realize the rotation of the cleaning and dust removal assembly and the welding assembly.

[0007] As a further scheme of the present application: the cleaning and dust removal assembly comprises a control seat, a movable frame, an air guide cavity, a fixed pipe, a dust collection pipe, a sliding frame and a cleaning scraper, the control seat is connected with one side of the lifting frame, the control seat is slidingly connected with the movable frame, the movable frame and the control seat are fixedly connected with springs, the air guide cavity is provided on the inner side of the movable frame, the fixed pipe is fixedly connected with the control seat, one end of the fixed pipe is slidingly connected with the movable frame, the other end of the fixed pipe is slidingly connected with the air guide pipe, the sliding frame is slidingly connected with the inner side of the frame wall of the end of the movable frame away from the control seat, the sliding frame and the movable frame are fixedly connected with springs, the other end of the sliding frame is fixedly connected with the cleaning scraper, and the cleaning scraper is used for cooperating with the rotation of the support frame to complete the cleaning of the welding surface.

[0008] As a further scheme of the present application: the dust suction assembly comprises a dust collecting cylinder, a dust suction pump, a touch lever, a dust suction seat, a plug-in pipe, a filter frame, a rotating rod, a connecting frame, a rack, a conversion sleeve, a trigger pipe, an arc-shaped control block, a piston pipe, a sensing piston and a connecting rod, the dust collecting cylinder is arranged outside the support guide pipe, the plug-in pipe is arranged on the dust collecting cylinder and connected with the support guide pipe through buckling, the other end of the dust collecting cylinder is threadedly connected with the dust suction seat, the dust suction pump is fixedly connected outside the dust suction seat, the input end of the dust suction pump is connected to the inside of the dust suction seat, the filter frame is fixedly connected with the dust suction seat outside, the connecting frame is connected with the dust collecting cylinder outside the filter frame, the rotating rod is rotatably arranged on the connecting frame, a plurality of cleaning brushes are arranged around the rotating rod outside, the cleaning brushes are fixedly connected with the rotating rod and abut against the installed filter frame, the conversion sleeve is fixedly arranged outside the dust collecting cylinder, the piston pipe is fixedly connected between the conversion sleeve and the dust collecting cylinder, the sensing piston is slidably connected inside the piston pipe, the sensing piston is connected with the rack through the connecting rod, the rack is meshingly connected with the transmission gear arranged outside the rotating rod, the trigger pipe is further fixedly connected on the conversion sleeve, the arc-shaped control block is arranged outside the trigger pipe, the arc-shaped control block is connected with the trigger pipe through the piston, the touch lever is connected with the conversion sleeve outside the conversion sleeve, and the touch lever is used to cooperate with the rotation of the conversion sleeve to clean the filter frame.

[0009] As a further scheme of the present application: the welding assembly comprises a connecting seat, a direction adjusting motor, a support rod, a support plate and a welding gun, the connecting seat is connected with the other side lifting frame, the direction adjusting motor is fixedly arranged inside the connecting seat, the output end of the direction adjusting motor is fixedly connected with the support rod, the support plate is fixedly connected outside the support rod, and the welding gun is installed on the support plate.

[0010] As a further scheme of the present application: the limiting moving unit comprises an energy supply motor, a threaded rod, an annular frame, a caster assembly and a guide rod, the annular frame is symmetrically arranged inside the cylindrical shell and slidably connected with the inner wall of the cylindrical shell, a plurality of threaded rods are rotatably arranged inside the cylindrical shell in a ring shape at equal intervals, the threaded rods are connected through a belt, one end of one of the threaded rods is connected with the output end of the energy supply motor, the energy supply motor is fixedly arranged inside the cylindrical shell, the energy supply motor is used to drive the two annular frames to move in opposite directions synchronously, a plurality of caster assemblies are further arranged around the outside of the cylindrical shell, the caster assemblies are connected with the cylindrical shell and the guide rod arranged on the annular frame, and the caster assemblies are used to realize the folding and unfolding of the caster assemblies in cooperation with the movement of the annular frame.

[0011] As a further scheme of the present application: the caster assembly comprises a mounting seat, a sliding block, a transmission control rod, a caster box and an electric wheel, the mounting seat is fixedly arranged outside the cylindrical shell, sliding blocks are symmetrically arranged on the inner side of the mounting seat, the sliding blocks are slidingly connected with the mounting seat and are connected with the guide rod on the same side annular frame, the caster box is arranged on the outer side of the end of the mounting seat away from the cylindrical shell, electric wheels are symmetrically arranged on the inner side of the caster box, the electric wheels are connected with the caster box, transmission control rods are arranged between the caster box and the sliding blocks on both sides, one end of the transmission control rod is rotatably connected with the caster box, and the other end is rotatably connected with the sliding block.

[0012] Compared with the prior art, the present application has the following beneficial effects:

[0013] The welding device is arranged in the stainless steel lining, the position limiting and moving unit cooperates with the stainless steel lining to support and limit the equipment and can also realize stable movement of the equipment in the pipeline, when the equipment moves to the welding position, the cleaning and dust removing assembly is first controlled to contact the welding surface, at the same time, the dust suction assembly is started, the rotating support assembly drives the cleaning and dust removing assembly to rotate, and then the welding surface is cleaned, subsequently, the welding assembly is aligned with the welding position, the rotating support assembly drives the welding assembly to rotate, and the welding of the stainless steel lining and the outer layer steel pipe is completed through the mode of spot welding first and then overall welding, the automatic welding unit is arranged in the present application, cooperates with the position limiting and moving unit, can complete automatic welding of stainless steel lining plates of different sizes, the welding surface can be fully cleaned before welding, the welding quality is guaranteed, and the welding efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the welding device for the stainless steel lining for composite pipeline processing.

[0015] Figure 2 It is a sectional view of the welding device for the stainless steel lining for composite pipeline processing.

[0016] Figure 3 It is a structural schematic view of the rotating support assembly in the welding device for the stainless steel lining for composite pipeline processing.

[0017] Figure 4 It is a sectional view of the rotating support assembly in the welding device for the stainless steel lining for composite pipeline processing.

[0018] Figure 5 It is a structural schematic view of the welding assembly in the welding device for the stainless steel lining for composite pipeline processing.

[0019] Figure 6 It is a structural schematic view of the cleaning and dust removing assembly in the welding device for the stainless steel lining for composite pipeline processing.

[0020] Figure 7The structure diagram of the dust suction component in the welding device for processing stainless steel lining of composite pipe.

[0021] Figure 8 The sectional view of the dust suction component in the welding device for processing stainless steel lining of composite pipe.

[0022] Figure 9 The sectional view of the conversion box in the welding device for processing stainless steel lining of composite pipe.

[0023] Figure 10 The Figure 9 The enlarged structure diagram of A in the middle.

[0024] Figure 11 The structure diagram of the limiting moving unit in the welding device for processing stainless steel lining of composite pipe.

[0025] Figure 12 The structure diagram of the caster component in the welding device for processing stainless steel lining of composite pipe.

[0026] In the figure: 1, cylindrical shell; 2, limiting moving unit; 3, cover plate; 4, automatic welding unit; 5, rotating support assembly; 6, welding assembly; 7, cleaning and dust removal assembly; 8, dust suction component; 9, support frame; 10, support guide pipe; 11, control motor; 12, driving gear; 13, driven gear; 14, air guide pipe; 15, lifting frame; 16, electric telescopic device; 17, connecting seat; 18, direction adjusting motor; 19, support rod; 20, support plate; 21, welding gun; 22, control seat; 23, movable frame; 24, air guide cavity; 25, fixed pipe; 26, dust suction pipe; 27, sliding frame; 28, cleaning scraper; 29, dust collection cylinder; 30, dust suction pump; 31, touch lever; 32, dust suction seat; 33, plug-in pipe; 34, filter frame; 35, rotating rod; 36, connecting frame; 37, rack; 38, conversion sleeve; 39, trigger pipe; 40, arc-shaped control block; 41, piston piece; 42, piston pipe; 43, induction piston; 44, connecting rod; 45, energy supply motor; 46, threaded rod; 47, annular frame; 48, caster component; 49, mounting seat; 50, sliding block; 51, force guide rod; 52, transmission control lever; 53, caster box; 54, electric wheel; 55, belt piece. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] Please see 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 and moving 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; and 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. 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 collection assembly 8. The rotating support assembly 5 is rotatably connected to 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 collection assembly 8 arranged inside the cylindrical shell 1 through the rotating support assembly 5. The dust collection assembly 8 is detachably connected to the rotating support assembly 5 and is used to cooperate with the rotating support assembly 5 to clean the contact side between the stainless steel liner and the outer steel pipe.

[0030] In this embodiment, during operation, the welding device is placed inside the stainless steel liner. The limiting and moving unit 2, in conjunction with the stainless steel liner, supports and limits the device, enabling stable movement of the device within the pipeline. When the device moves to the welding point, the cleaning and dust removal component 7 is first brought into contact with the welding surface. Simultaneously, the dust extraction component 8 is activated, 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 liner and the outer steel pipe is completed by spot welding followed by overall welding. This application, by setting an automatic welding unit 4 in conjunction with the limiting and moving unit 2, can automatically weld stainless steel liner plates of different sizes. Moreover, the welding surface can be thoroughly cleaned before welding, ensuring welding quality and greatly improving welding efficiency.

[0031] In one embodiment of the present invention, please refer to Figure 2 , Figure 3 and Figure 4The rotating support assembly 5 comprises a support frame 9, a support guide pipe 10, a control motor 11, a driving gear 12, a driven gear 13, an air guide pipe 14, a lifting frame 15 and an electric telescopic device 16, the support guide pipe 10 is rotationally connected with a side wall of the cylindrical shell 1, one end of the support guide pipe 10 is connected with the dust suction assembly 8, and the other end is externally provided with the support frame 9, the lifting frame 15 is arranged at both ends of the inner side of the support frame 9, the lifting frames 15 at both sides are respectively connected with the cleaning and dust removing assembly 7 and the welding assembly 6, the lifting frame 15 is connected with the support frame 9 through the electric telescopic device 16, the air guide pipe 14 connected with the cleaning and dust removing assembly 7 is further arranged on the support guide pipe 10, the control motor 11 connected with the inner wall of the cylindrical shell 1 is arranged on the outer side of the support guide pipe 10, the output end of the control motor 11 is fixedly connected with the driving gear 12, and the driving gear 12 is meshingly connected with the driven gear 13 fixedly arranged on the outer side of the support guide pipe 10, so as to realize the rotation of the cleaning and dust removing assembly 7 and the welding assembly 6 in cooperation with the support guide pipe 10.

[0032] In the embodiment, the electric telescopic device 16 is an electric push rod, the lifting frame 15 is controlled to lift by the electric telescopic device 16, so that the cleaning and dust removing assembly 7 and the welding assembly 6 can be stably connected with the welding position, the control motor 11 drives the driving gear 12 to rotate, the driving gear 12 cooperates with the driven gear 13 to realize the rotation of the support guide pipe 10, the support guide pipe 10 drives the support frame 9 to rotate, the support frame 9 cooperates with the lifting frame 15 to drive the cleaning and dust removing assembly 7 and the welding assembly 6 to synchronously rotate, the cleaning and dust removing assembly 7 can comprehensively clean the welding position, and the welding assembly 6 can comprehensively weld the inner liner, meanwhile, the dust suction assembly 8 can cooperate with the support guide pipe 10 and the air guide pipe 14 to realize the automatic absorption of the cleaned dust by the cleaning and dust removing assembly 7, so that the secondary pollution of dust and impurities to the welding position is avoided, the cleaning effectiveness is ensured, and the welding quality is ensured.

[0033] In one embodiment of the application, please refer to Figure 4 and Figure 6The cleaning and dust removing assembly 7 comprises a control seat 22, a movable frame 23, a gas guide cavity 24, a fixed tube 25, a dust suction tube 26, a sliding frame 27 and a cleaning scraper 28. The control seat 22 is connected with one side lifting frame 15. The control seat 22 is slidably connected with the movable frame 23. The movable frame 23 is fixedly connected with the control seat 22 and is provided with a spring. The movable frame 23 is provided with the gas guide cavity 24 on the inner side. The fixed tube 25 is fixedly connected with the control seat 22, slidably connected with the movable frame 23 at one end and slidably connected with the gas guide tube 14 at the other end. The sliding frame 27 is slidably connected with the movable frame 23 on the inner side of the frame wall away from the control seat 22. The sliding frame 27 is fixedly connected with the movable frame 23 and is provided with a spring. The sliding frame 27 is fixedly connected with the cleaning scraper 28 at the other end, which is used for cooperating with the rotation of the support frame 9 to complete the cleaning of the welding surface. The dust suction tube 26 is fixedly connected with the movable frame 23 on both sides of the cleaning scraper 28. The dust suction tube 26 is connected with the gas guide cavity 24 and is used for cooperating with the dust suction assembly 8 to complete the absorption of the cleaned debris.

[0034] In the embodiment, the cleaning scraper 28 is in an L-shaped structure. When the equipment moves to the welding position, the electric telescopic device 16 drives the control seat 22 to move close to the welding position in cooperation with the lifting frame 15, so that the top end of the cleaning scraper 28 abuts against the inner wall of the outer steel pipe. Then the equipment is transversely moved, so that the side wall of the cleaning scraper 28 abuts against the end of the stainless steel lining. The support frame 9 is driven to rotate by the support guide pipe 10, and the cleaning scraper 28 is driven to rotate by the support frame 9. During the rotation, the welding surface is cleaned. At the same time, the dust suction assembly 8 can extract the air on the inner side of the gas guide cavity 24. The dust suction tube 26 is used for absorbing the cleaned debris. The impurities are sucked into the inner side of the gas guide cavity 24 and enter the inner side of the dust suction assembly 8 along the support guide pipe 10. The dust suction assembly 8 is used for recycling and collecting the impurities. By arranging the cleaning and dust removing assembly 7, the welding surface can be cleaned, so as to ensure the reliability and quality of subsequent welding.

[0035] In one embodiment of the present application, please refer to Figure 7 、 Figure 8 、 Figure 9 and Figure 10The dust suction assembly 8 comprises a dust collecting cylinder 29, a dust suction pump 30, a touch lever 31, a dust suction seat 32, a plug pipe 33, a filter frame 34, a rotating rod 35, a connecting frame 36, a rack 37, a conversion sleeve 38, a trigger pipe 39, an arc-shaped control block 40, a piston pipe 42, a sensing piston 43 and a connecting rod 44. The dust collecting cylinder 29 is arranged outside the support conduit 10. The plug pipe 33 is arranged on the dust collecting cylinder 29 and is connected to the support conduit 10 through buckling. The other end of the dust collecting cylinder 29 is threadedly connected to the dust suction seat 32. The dust suction seat 32 is fixedly connected to the outside of the dust suction pump 30. The input end of the dust suction pump 30 is connected to the inside of the dust suction seat 32. The dust suction pump 30 is fixedly connected to the filter frame 34 arranged outside the dust suction seat 32. The connecting frame 36 is arranged outside the filter frame 34 and is connected to the dust collecting cylinder 29. The rotating rod 35 is rotatably arranged on the connecting frame 36. A plurality 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. The conversion sleeve 38 is fixedly arranged outside the dust collecting cylinder 29. The piston pipe 42 is fixedly connected between the dust collecting cylinder 29 and the conversion sleeve 38. The sensing piston 43 is slidably arranged inside the piston pipe 42. The sensing piston 43 is connected to the rack 37 through the connecting rod 44. The rack 37 is meshingly connected to a transmission gear arranged outside the rotating rod 35. The trigger pipe 39 is fixedly arranged on the conversion sleeve 38. The arc-shaped control block 40 is arranged outside the trigger pipe 39. The arc-shaped control block 40 is connected to the trigger pipe 39 through a piston piece 41. The touch lever 31 is arranged outside the conversion sleeve 38 and is connected to the cylindrical shell 1. The touch lever 31 is used to cooperate with the rotation of the conversion sleeve 38 to clean the filter frame 34.

[0036] In the embodiment, the piston 41 comprises a piston slidingly connected inside the trigger tube 39 and a push rod fixedly connected with the piston, the push rod is fixedly connected with the arc-shaped control block 40, a guide groove is arranged on the rod wall of the push rod, a guide block is slidingly connected inside the guide groove, the guide block is fixedly connected with the inner wall of the trigger tube 39, when the dust suction assembly 8 operates, the dust collecting cylinder 29 is threadedly connected with the dust suction seat 32, the plug-in pipe 33 is inserted into the support guide pipe 10, the dust collecting cylinder 29 is connected with the support guide pipe 10 through buckle installation, when the support guide pipe 10 rotates, the dust collecting cylinder 29 and the dust suction seat 32 are driven to rotate synchronously, when the cleaning scraper 28 cleans the welding surface, the dust suction pump 30 operates simultaneously to absorb dust and debris, the absorbed dust enters the inside of the dust collecting cylinder 29 along the support guide pipe 10, the filter frame 34 filters the dust, the air after filtering is discharged from the dust suction pump 30, when the dust collecting cylinder 29 rotates, the arc-shaped control block 40 contacts the touch lever 31, the movement of the piston inside the trigger tube 39 is realized, and then the air flow inside the conversion sleeve 38 is realized, so that the induction piston 43 moves inside the piston pipe 42, the induction piston 43 drives the rack 37 to move through the connecting rod 44, the rotation of the rotating rod 35 is realized by the cooperation of the transmission gear, the rotating rod 35 completes the cleaning of the surface of the filter frame 34 through the cleaning brush, dust is prevented from accumulating on the surface of the filter frame 34, so that the stability of dust suction is ensured, the dust suction assembly 8 can cooperate with the rotating support assembly 5 and the cleaning and dust removal assembly 7 to complete the cleaning and absorption of dust on the welding surface, and can also cooperate with the rotation of the support guide pipe 10 to complete the automatic cleaning of the filter frame 34, so that the stability of the equipment during operation is ensured, and the welding quality of the equipment is effectively improved.

[0037] In one embodiment of the present application, please refer to Figure 4 and Figure 5 , the welding assembly 6 comprises a connecting seat 17, a direction adjusting motor 18, a support rod 19, a support plate 20 and a welding gun 21, the connecting seat 17 is connected with the other side lifting frame 15, the direction adjusting motor 18 is fixedly arranged inside the connecting seat 17, the output end of the direction adjusting motor 18 is fixedly connected with the support rod 19, the support plate 20 is fixedly arranged outside the support rod 19, and the welding gun 21 is installed on the support plate 20.

[0038] In the embodiment, when the welding surface is cleaned, the lifting frame 15 connected with the connecting seat 17 is driven by the corresponding electric telescopic device 16 to realize the lifting of the welding gun 21, and the steering motor 18 can drive the support rod 19 to rotate, the support rod 19 drives the support plate 20 to rotate, and the welding angle of the welding gun 21 is adjusted. Through the above adjustment, the welding gun 21 can accurately aim at 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. Through the setting of the welding assembly 6, the automatic welding of the stainless steel lining and the outer steel pipe can be realized by cooperating with the rotating support assembly 5. The problems that the artificial is not easy to spread the body in the narrow space, the welding work consumes a lot of physical strength when welding in the pipeline, the smoke and dust generated by welding is not easy to remove, the construction environment is poor, the one-time qualified rate of welding is very low, the construction cycle is prolonged, and the construction cost is increased are solved. The welding efficiency is greatly improved.

[0039] In one embodiment of the present application, please refer to Figure 11 and Figure 12 The limiting moving unit 2 comprises an energy supply motor 45, threaded rods 46, annular frames 47, caster assemblies 48 and guide rods 51. The annular frames 47 are symmetrically arranged on the inner side of the cylindrical shell 1 and are in sliding connection with the inner wall of the cylindrical shell 1. The threaded rods 46 are rotationally arranged on the inner side of the cylindrical shell 1 and are equidistantly distributed in a ring shape. The threaded rods 46 are connected by a belt member 55. One end of one of the threaded rods 46 is connected with 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 drive the two annular frames 47 to move in opposite directions synchronously. A plurality of caster assemblies 48 are arranged on the outer side of the cylindrical shell 1 and are connected with the guide rods 51 arranged on the annular frames 47 and used to realize the folding and unfolding of the caster assemblies 48 in cooperation with the movement of the annular frames 47.

[0040] In the embodiment, the belt member 55 comprises pulleys fixedly connected with the outer sides of the threaded rods 46 and a belt used to connect the pulleys. The energy supply motor 45 drives one of the threaded rods 46 to rotate, and the threaded rods 46 are synchronously rotated through the pulleys and the belt. The number of the threaded rods 46 is three. The threaded directions of the outer sides of the two ends of the threaded rods 46 are opposite. When the threaded rods 46 rotate, the two annular frames 47 are driven to move in opposite directions synchronously. The annular frames 47 drive the caster assemblies 48 through the guide rods 51 to fold and unfold. In cooperation with the stainless steel lining, the device is supported and limited, and the movement of the device in the pipeline is realized. Through the setting of the limiting moving unit 2, the device can stably move in pipelines of different sizes, the applicability of the device is enhanced, and the automatic welding of the stainless steel lining and the outer steel pipe is realized in cooperation with the automatic welding unit 4.

[0041] In one embodiment of the present application, referring to Figure 12 , the caster assembly 48 comprises a mounting seat 49, a sliding block 50, a transmission control rod 52, a caster box 53 and an electric wheel 54, the mounting seat 49 is fixedly arranged on the outer side of the cylindrical shell 1, the inner side of the mounting seat 49 is symmetrically provided with the sliding block 50, the sliding block 50 is in sliding connection with the mounting seat 49 and is connected with the guide rod 51 on the same side of the annular frame 47, the outer side of the end of the mounting seat 49 away from the cylindrical shell 1 is provided with the caster box 53, the inner side of the caster box 53 is symmetrically provided with the electric wheel 54, the electric wheel 54 is connected with the caster box 53, and the transmission control rod 52 is arranged between the caster box 53 and the sliding block 50 on both sides, one end of the transmission control rod 52 is in rotational connection with the caster box 53, and the other end is in rotational connection with the sliding block 50.

[0042] In the embodiment, the number of the mounting seat 49 is also three, when the annular frame 47 moves, the synchronous movement of the sliding block 50 can be realized through the guide rod 51, the sliding block 50 realizes the folding and unfolding of the caster box 53 through the transmission control rod 52, the electric wheel 54 comprises an electric control caster and a steering machine for controlling the steering of the electric control caster, the steering machine is fixedly connected with the caster box 53, the output end of the steering machine is connected with the electric control caster, the contact surface between the electric control caster and the stainless steel lining is made of anti-skid material, which ensures the stability of the equipment moving in the inner side of the pipeline, through the setting of the caster assembly 48, the folding and unfolding of the caster box 53 can be realized by the movement of the annular frame 47, the electric wheel 54 abuts against the stainless steel lining, which realizes the support and limiting of the equipment, and also realizes the movement in the pipeline, thereby ensuring the accuracy of the welding.

[0043] In one embodiment of the present application, referring to Figure 1 and Figure 2 , the cover plate 3 is clamped and arranged on the shell wall of the end of the cylindrical shell 1 away from the support frame 9, through the setting of 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.

[0044] The welding device for the stainless steel lining of the composite pipe machining, the equipment is placed in the pipe, the power motor 45 drives a threaded rod 46 to rotate, the threaded rod 46 realizes the synchronous rotation of each threaded rod 46 through pulleys and belts, wherein the number of the threaded rod 46 is three, the threaded direction of the outer side of the two ends of the threaded rod 46 is opposite, when the threaded rod 46 rotates, it can drive the synchronous movement of the two side annular frames 47 in opposite directions, the annular frame 47 realizes the synchronous movement of the sliding block 50 through the force guide rod 51, the sliding block 50 realizes the folding and unfolding of the caster box 53 through the transmission control rod 52, the electric wheel 54 abuts against the stainless steel lining, completes the support and limiting of the equipment, and realizes the movement of the equipment in the pipe, when moving to the welding position, the electric telescopic device 16 drives the control seat 22 to move close to the welding position with the cooperation of the lifting frame 15, 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, the driving gear 12 realizes the rotation of the support guide pipe 10 in cooperation with the driven gear 13, the support guide pipe 10 drives the support frame 9 to rotate, the support frame 9 drives the cleaning scraper 28 to rotate, the cleaning of the welding surface is completed in the rotating process, the dust suction pump 30 operates at the same time, absorbs dust and debris, the absorbed dust enters the inside of the dust collecting cylinder 29 along the support guide pipe 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-shaped control block 40 will contact the touch control rod 31, realizes the movement of the piston in the inside of the trigger pipe 39, and further realizes the flow of the air in the inside of the conversion sleeve 38, so as to realize the movement of the induction piston 43 in the inside of the piston pipe 42, the induction piston 43 drives the rack 37 to move through the connecting rod 44, the rack 37 realizes the rotation of the rotating rod 35 in cooperation with the transmission gear, the rotating rod 35 completes the cleaning of the surface of the filter frame 34 through the cleaning brush, avoids the accumulation of dust on the surface of the filter frame 34, when the welding surface is cleaned, the lifting frame 15 connected with the connecting seat 17 realizes the lifting of the welding gun 21 under the drive of the corresponding electric telescopic device 16, at the same time, the steering motor 18 can drive the support rod 19 to rotate, the support rod 19 drives the support plate 20 to rotate, adjusts the welding angle of the welding gun 21, through the above adjustment, the welding gun 21 can accurately aim at the joint of the stainless steel lining and the outer steel pipe, the support frame 9 rotates, the welding gun 21 rotates synchronously with the support frame 9, completes the welding of the stainless steel lining and the outer steel pipe.

[0045] The above is only the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, these should also be regarded as the protection scope of the present application, these will not affect the effect and practicality of the patent.

Claims

1. A welding device for stainless steel lining in composite pipe processing, characterized in that, Include: cylinder shell; limiting movement unit, the limiting movement unit is arranged around the cylinder shell, connected with the cylinder shell, used to cooperate with the stainless steel lining to complete the limiting support and movement of the welding device; automatic welding unit, the automatic welding unit is connected with the cylinder shell, used to cooperate with the fixed cylinder shell to complete the automatic welding of the stainless steel lining and the outer layer steel pipe; Wherein, the automatic welding unit includes: rotating support assembly, welding assembly, cleaning and dust removal assembly and dust suction assembly, the rotating support assembly is rotatably connected with one side of the shell wall of the cylinder shell, the welding assembly and the cleaning and dust removal assembly are respectively arranged on both sides of the rotating support assembly, and are connected with the rotating support assembly, the cleaning and dust removal assembly is also connected with the dust suction assembly arranged in the inner side of the cylinder shell through the rotating support assembly, the dust suction assembly is detachably connected with the rotating support assembly, used to cooperate with the rotating support assembly to complete the cleaning of the contact side of the stainless steel lining and the outer layer steel pipe; The rotating support assembly includes: support frame, support guide pipe, control motor, driving gear, driven gear, air guide pipe, lifting frame and electric telescopic device, the support guide pipe is rotatably connected with one side of the shell wall of the cylinder shell, one end of the support guide pipe is connected with the dust suction assembly, the other end of the support guide pipe is fixedly provided with the support frame outside, the lifting frame is arranged at both ends of the support frame, the lifting frame is connected with the cleaning and dust removal assembly and the welding assembly, the lifting frame is connected with the support frame through the electric telescopic device, the air guide pipe connected with the cleaning and dust removal assembly is also fixedly arranged on the support guide pipe, the control motor connected with the inner wall of the cylinder shell is arranged outside the support guide pipe, the output end of the control motor is fixedly connected with the driving gear, the driving gear is meshed with the driven gear fixedly arranged outside the support guide pipe, used to cooperate with the support guide pipe to realize the rotation of the cleaning and dust removal assembly and the welding assembly; The cleaning and dust removal assembly includes: control seat, movable frame, air guide cavity, fixed pipe, dust suction pipe, sliding frame and cleaning scraper, the control seat is connected with one side of the lifting frame, the control seat is slidingly connected with the movable frame, the spring is fixedly connected between the movable frame and the control seat, the air guide cavity is arranged in the inner side of the movable frame, the fixed pipe is fixedly connected with the control seat, one end of the fixed pipe is slidingly connected with the movable frame, the other end of the fixed pipe is slidingly connected with the air guide pipe, the sliding frame is slidingly connected with the movable frame, the spring is fixedly connected between the sliding frame and the movable frame, the other end of the sliding frame is fixedly connected with the cleaning scraper, used to cooperate with the rotation of the support frame to complete the cleaning of the welding surface, the dust suction pipe fixedly connected with the movable frame is arranged on both sides of the cleaning scraper, the dust suction pipe is connected with the air guide cavity, used to cooperate with the dust suction assembly to complete the absorption of the cleaned debris. The dust suction assembly comprises a dust collecting cylinder, a dust suction pump, a touch lever, a dust suction seat, a plug-in pipe, a filter frame, a rotating rod, a connecting frame, a rack, a conversion sleeve, a trigger pipe, an arc-shaped control block, a piston pipe, a sensing piston and a connecting rod. The dust collecting cylinder is arranged outside the support conduit. The plug-in pipe is arranged on the dust collecting cylinder and connected with the support conduit through buckling. The other end of the dust collecting cylinder is threadedly connected with the dust suction seat. The dust suction pump is fixedly connected outside the dust suction seat. The input end of the dust suction pump is connected to the inside of the dust suction seat. The filter frame is fixedly connected with the dust suction seat outside. The connecting frame is connected with the dust collecting cylinder outside the filter frame. The rotating rod is rotatably arranged on the connecting frame. A plurality of cleaning brushes are arranged around the rotating rod outside. The cleaning brushes are fixedly connected with the rotating rod and abut against the installed filter frame. The conversion sleeve is fixedly arranged outside the dust collecting cylinder. The piston pipe is fixedly connected between the conversion sleeve and the dust collecting cylinder. The sensing piston is slidably arranged inside the piston pipe. The sensing piston is connected with the rack through the connecting rod. The rack is meshingly connected with the transmission gear arranged outside the rotating rod. The trigger pipe is fixedly arranged on the conversion sleeve. The arc-shaped control block is arranged outside the trigger pipe. The arc-shaped control block is connected with the trigger pipe through the piston. The touch lever is connected with the conversion sleeve outside the conversion sleeve. The touch lever is used to rotate the conversion sleeve to clean the filter frame.

2. The apparatus for welding a stainless steel liner for composite pipe processing according to claim 1, characterized by, The welding assembly comprises a connecting seat, a direction adjusting motor, a support rod, a support plate and a welding gun. The connecting seat is connected with the other side lifting frame. The direction adjusting motor is fixedly arranged inside the connecting seat. The output end of the direction adjusting motor is fixedly connected with the support rod. The support plate is fixedly connected with the support rod outside. The welding gun is installed on the support plate.

3. The apparatus for welding a stainless steel liner for composite pipe processing according to claim 1, characterized by, The limiting moving unit comprises an energy supply motor, threaded rods, annular frames, caster assemblies and guide rods. The annular frames are symmetrically arranged inside the cylindrical shell and slidably connected with the inner wall of the cylindrical shell. A plurality of threaded rods are rotatably arranged inside the cylindrical shell in a ring shape at equal intervals. The threaded rods are connected with each other through a belt. The other end of one of the threaded rods is connected with the output end of the energy supply motor. The energy supply motor is fixedly arranged inside the cylindrical shell and used to drive the annular frames on both sides to move in opposite directions synchronously. A plurality of caster assemblies are also arranged around the outside of the cylindrical shell. The caster assemblies are connected with the cylindrical shell and the guide rods arranged on the annular frames. The caster assemblies are used to move with the annular frames to realize the folding and unfolding of the caster assemblies.

4. The apparatus for welding a stainless steel liner for composite pipe processing according to claim 3, characterized by The caster assembly comprises a mounting seat, a sliding block, a transmission control rod, a caster box and an electric wheel. The mounting seat is fixedly arranged outside the cylindrical shell. The sliding blocks are symmetrically arranged inside the mounting seat and slidably connected with the mounting seat. The sliding blocks are connected with the guide rods on the same side annular frame. The caster box is arranged outside the end of the mounting seat away from the cylindrical shell. The electric wheels are symmetrically arranged inside the caster box and connected with the caster box. The transmission control rods are arranged between the caster box and the sliding blocks on both sides. One end of the transmission control rod is rotatably connected with the caster box. The other end of the transmission control rod is rotatably connected with the sliding block.

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