A flange joint welding processing device

Abstract

This invention relates to the field of processing and manufacturing of connecting components for industrial equipment, specifically to a flange joint welding processing device, which includes a protective shell and a welding rod. A platform is fixedly connected to the top of the protective shell, and a rotating table is rotatably connected to the inner side of the platform. A telescopic platform for limiting the welding rod is provided on the top of the rotating table. A welding assembly for welding the flange base and the flange pipe interface is provided inside the protective shell. A toggle assembly for swing welding is provided below the welding assembly. A rotating rod for rotating the flange joint is provided inside the welding assembly. This invention fixes the flange joint with the welding assembly, uses the rotating rod and the welding rod to complete the welding of the annular interface of the flange joint, and uses the toggle assembly to complete the swing of the welding rod.

Description

Technical Field

[0001] This invention relates to the field of processing and manufacturing of connecting components for industrial equipment, and more specifically, to a flange joint welding processing device. Background Technology

[0002] Flange joints are indispensable connecting components in industrial pipeline systems and are widely used in many fields such as petrochemical, power, water treatment, food processing, and pharmaceutical. Their main function is to connect pipes, valves, pumps and other equipment to ensure the smooth and safe transmission of fluid media in the pipeline system. The quality and reliability of flange joints directly affect the operating efficiency and safety of the entire pipeline system.

[0003] Chinese Publication No. CN118768830A discloses a positioning device for flange joint welding, comprising a positioning worktable and flange joint bodies. A synchronous positioning mechanism is provided on the top of the positioning worktable, and a fume treatment mechanism is provided on the back of the worktable. The synchronous positioning mechanism includes a pneumatic positioning unit and a pneumatic control unit. This invention, through the cooperative design of the support pipe and the limiting sleeve, can simultaneously perform temporary positioning of five flange joint bodies. Furthermore, through the design of the connecting air pipe, it can absorb gas from the inner cavity of the hollow ring seat, causing a synchronous negative pressure to be generated in the inner cavity of the support pipe. This negative pressure drives the insertion piece downwards, limiting the top of the flange joint body, thus achieving the function of simultaneously positioning five flange joint bodies. This avoids the need for disassembly and assembly of individual flange joint bodies during welding, improving the welding efficiency of this structure.

[0004] Although the above patent utilizes a positioning unit and a pneumatic control unit to achieve the function of simultaneously positioning five flange joint bodies, it is worth noting that during the welding process of flange joints, because the expansion coefficients of the molten pool and the base material are different, if the oscillation is not performed, the weld will shrink unevenly, resulting in reduced weld strength and weld cracks. Furthermore, if too much residual gas is present in the molten pool during the welding process, it will form pores, affecting the quality and strength of the weld.

[0005] In view of this, we propose a flange joint welding processing device. Summary of the Invention

[0006] The purpose of this invention is to provide a flange joint welding processing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides a flange joint welding processing device, comprising a protective shell and a welding rod. A platform is fixedly connected to the top of the protective shell, and a rotating table is rotatably connected to the inner side of the platform. A telescopic platform for limiting the welding rod is provided on the top of the rotating table. A welding assembly for welding the flange base and flange pipe interface is provided inside the protective shell. A toggle assembly for oscillating welding is provided below the welding assembly. A rotating rod for rotating the flange joint is provided inside the welding assembly. Wherein:

[0008] By fixing the flange joint with the welding assembly, the welding of the flange joint annular interface is completed by the rotating rod and the welding rod, while the oscillating assembly is used to swing the welding rod.

[0009] Preferably, the protective shell has support frames slidably connected to both sides, a telescopic rod is fixedly connected to the top of the support frame, the telescopic rod passes through the support frame, a pressing plate is fixedly connected to the lower end of the telescopic rod, a first turntable is fixedly connected to the bottom of the rotating platform, and a first annular rack is fixedly connected to the bottom of the first turntable, wherein:

[0010] The top of the rotary table is fixedly connected to a retractable limiting column.

[0011] As a preferred embodiment of the present invention, the welding assembly includes a motor, which is fixedly connected to the bottom of the partition inside the protective shell. The output end of the motor is fixedly connected to a first rotating wheel, and a first transmission belt is sleeved on the outer wall of the first rotating wheel. A second rotating wheel is provided on the inner side of the other end of the first transmission belt, and a rotating rod is fixedly connected to the center of the second rotating wheel.

[0012] As a preferred embodiment of the present invention, a pad is fixedly connected to the upper outer wall of the rotating rod, the pad is disposed on the top of the rotating platform, a slide rail is fixedly connected to the top periphery of the pad, and a slider is slidably connected to the top of the slide rail. The slider is triangular in shape, and the triangular inclined surface of the slider faces outward.

[0013] As a preferred embodiment of the present invention, a second turntable is fixedly connected to the rotating rod below the pad, and multiple protrusions are fixedly connected to the outer wall of the second turntable. A first fixing post is provided on the outer wall of the rotating rod below the second turntable. A sliding disc is slidably connected to the upper outer wall of the rotating rod, and a bent rod is fixedly connected to the lower end of the rotating rod.

[0014] Preferably, an extension plate is fixedly connected to one side of the first fixed column, a fixed plate is fixedly connected to the top of the extension plate, a sliding plate is slidably connected to the inner side of the fixed plate, the sliding plate and the second turntable are on the same horizontal plane, and a spring is fixedly connected between the sliding plate and the fixed plate, wherein:

[0015] The top of the sliding plate is fixedly connected to a telescopic platform through the rotating platform, and the welding rod is fixedly connected obliquely to the inner side of the telescopic platform.

[0016] Preferably, a toggle assembly is provided below the rotating rod. The toggle assembly includes a second fixed post. A cross groove is provided on the top of the second fixed post. A first gear and a second gear are rotatably connected in the second fixed post within the cross groove. The first gear and the second gear are meshed together. A third gear is fixedly connected to the first gear through a cross post passing through one side of the second fixed post. Similarly, the second gear is fixedly connected to another third gear through a cross post passing through the other side of the second fixed post.

[0017] As a preferred embodiment of the present invention, a third turntable is rotatably connected to both sides of the second fixed column, a second rack is fixedly connected to the top outer wall of the third turntable, the second rack meshes with the third gears on both sides, a first connecting rod is fixedly connected to one side of the third turntable, a second connecting rod is rotatably connected to the end of the first connecting rod away from the third turntable, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the bent rod.

[0018] As a preferred embodiment of the present invention, the three turntables on both sides are fixedly connected to an extension rod on the side away from the first connecting rod. The extension rod on both sides is fitted with a second transmission belt on the outer wall of the end away from the three turntables. The other end of the second transmission belt is provided with a third wheel on the inner side. The third wheel is rotatably connected to the inner wall of the protective shell.

[0019] As a preferred embodiment of the present invention, the No. 3 rotating wheel is fixedly connected to the No. 4 gear on the side away from the inner wall of the protective shell, and the No. 4 gear is meshed with the No. 1 rack.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In this flange joint welding processing device, the first rotating wheel, rotating rod and flange joint are rotated together by the drive of the motor. When the raised part of the second rotating plate rotates, it drives the sliding plate and telescopic table to slide left and right together, so that the welding rod moves away from the flange joint and moves closer and further away, and uniformly welds the interface position of the flange joint.

[0022] 2. In this flange joint welding processing device, the rotation of the rotating rod drives the first and second connecting rods, causing the third turntable to rotate. At the same time, under the action of the first and second gears, the two side extension rods rotate in opposite directions, and the second transmission belt drives the fourth gear to reciprocate. The fourth reciprocating gear, in turn, drives the rotary table and the telescopic table to reciprocate. This makes the welding rod swing evenly, which can make the heat distribution more uniform and the weld shrinkage more uniform, thereby increasing the strength and uniformity of the weld. It can also help the gas to be discharged from the molten pool and avoid the formation of porosity. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the flange joint welding processing device of the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the flange joint welding processing device of the present invention.

[0025] Figure 3 This is a schematic longitudinal sectional view of the flange joint welding processing device of the present invention.

[0026] Figure 4 This is a three-dimensional cross-sectional view of the protective shell of the flange joint welding processing device of the present invention;

[0027] Figure 5 This is a three-dimensional schematic diagram of the internal welding components of the flange joint welding processing device of the present invention;

[0028] Figure 6 This is a three-dimensional schematic diagram of the welding components of the flange joint welding processing device of the present invention;

[0029] Figure 7 This is a three-dimensional schematic diagram of the welding rod position of the flange joint welding processing device of the present invention;

[0030] Figure 8 This is a three-dimensional schematic diagram of the actuating component of the flange joint welding processing device of the present invention;

[0031] Figure 9 This is a schematic diagram showing the details of the actuating component of the flange joint welding processing device of the present invention;

[0032] The meanings of the labels in the diagram are as follows:

[0033] 1. Protective shell; 11. Platform; 111. Support frame; 12. Telescopic rod; 121. Pressing plate; 13. Rotary table; 131. Turntable No. 1; 1311. Rack No. 1; 132. Limiting post; 2. Welding assembly; 21. Motor; 22. Wheel No. 1; 221. Transmission belt No. 1; 23. Wheel No. 2; 24. Rotating rod; 241. Pad; 2411. Slider; 242. Slide rail; 243. Turntable No. 2; 244. Sliding plate; 245. Bending rod; 25. Fixed post No. 1; 251. Extension plate; 26. Fixed plate; 261. Sliding plate; 2611. Telescopic table; 2612. Welding rod; 262. Spring;

[0034] 3. Actuating assembly; 31. Fixed post No. 2; 311. Gear No. 1; 3111. Gear No. 2; 312. Gear No. 3; 32. Turntable No. 3; 321. Rack No. 2; 322. Connecting rod No. 1; 33. Connecting rod No. 2; 34. Extension rod; 35. Transmission belt No. 2; 36. Wheel No. 3; 361. Gear No. 4. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Example 1

[0038] Please see Figures 1-9As shown, this embodiment provides a flange joint welding processing device, including a protective shell 1 and a welding rod 2612. A platform 11 is fixedly connected to the top of the protective shell 1, and a rotating table 13 is rotatably connected to the inner side of the platform 11. A telescopic table 2611 for limiting the welding rod 2612 is provided on the top of the rotating table 13. A welding assembly 2 for welding the flange base and the flange pipe interface is provided inside the protective shell 1. A toggle assembly 3 for swing welding is provided below the welding assembly 2. A rotating rod 24 for rotating the flange joint is provided inside the welding assembly 2. The flange joint is fixed by the welding assembly 2, and the welding rod 24 and the welding rod 2612 are used to complete the welding of the annular interface of the flange joint. At the same time, the toggle assembly 3 is used to swing the welding rod 2612.

[0039] like Figures 1-3 As shown, support frames 111 are slidably connected to both sides of the protective shell 1. A telescopic rod 12 is fixedly connected to the top of the support frame 111. The telescopic rod 12 passes through the support frame 111. A pressing plate 121 is fixedly connected to the lower end of the telescopic rod 12. A first turntable 131 is fixedly connected to the bottom of the rotating platform 13. A ring-shaped first rack 1311 is fixedly connected to the bottom of the first turntable 131. A retractable limiting post 132 is fixedly connected to the top of the rotating platform 13.

[0040] like Figures 5-6 As shown, the welding assembly 2 includes a motor 21, which is fixedly connected to the bottom of the inner partition of the protective shell 1. A first rotating wheel 22 is fixedly connected to the output end of the motor 21. A first transmission belt 221 is fitted onto the outer wall of the first rotating wheel 22. A second rotating wheel 23 is located on the inner side of the other end of the first transmission belt 221. A rotating rod 24 is fixedly connected to the center of the second rotating wheel 23. A pad 241 is fixedly connected to the upper outer wall of the rotating rod 24. The pad 241 is located on the top of the rotating table 13, and its top periphery is fixedly connected to... A slide rail 242 is connected, and a slider 2411 is slidably connected to the top of the slide rail 242. The slider 2411 is triangular, and the triangular inclined surface of the slider 2411 faces outward. A second turntable 243 is fixedly connected to the rotating rod 24 below the pad 241. Multiple protrusions are fixedly connected to the outer wall of the second turntable 243. A first fixed post 25 is set on the outer wall of the rotating rod 24 below the second turntable 243. A sliding disk 244 is slidably connected to the upper outer wall of the rotating rod 24, and a bent rod 245 is fixedly connected to the lower end of the rotating rod 24.

[0041] like Figures 6-7As shown, an extension plate 251 is fixedly connected to one side of the first fixed column 25, a fixed plate 26 is fixedly connected to the top of the extension plate 251, and a sliding plate 261 is slidably connected to the inner side of the fixed plate 26. The sliding plate 261 and the second turntable 243 are on the same horizontal plane. A spring 262 is fixedly connected between the sliding plate 261 and the fixed plate 26. The top of the sliding plate 261 is fixedly connected to a telescopic platform 2611 through the rotating platform 13. A welding rod 2612 is obliquely fixedly connected to the inner side of the telescopic platform 2611. The rotating rod 24... A toggle assembly 3 is provided below, which includes a second fixed post 31. The top of the second fixed post 31 has a cross groove. The second fixed post 31 is rotatably connected to a first gear 311 and a second gear 3111 within the cross groove. The first gear 311 and the second gear 3111 are meshed together. The first gear 311 is fixedly connected to a third gear 312 through a cross post passing through one side of the second fixed post 31. Similarly, the second gear 3111 is fixedly connected to another third gear 312 through a cross post passing through the other side of the second fixed post 31.

[0042] Therefore, when welding is required on flange joints, if... Figures 2-6 As shown, firstly, the worker places the base portion of the flange joint to be welded onto the gasket 241, then places the tubular portion of the flange joint onto the sliding plate 244. At this point, the extension of the telescopic rod 12 causes the pressing plate 121 to press down, moving the tubular portion of the flange joint down to connect with the base portion, thus fixing the tubular portion of the flange joint to the top of the gasket 241. Then, the switch is turned on... Figure 6 As shown, under the drive of motor 21, the first rotating wheel 22 rotates. At this time, under the transmission of the first transmission belt 221, the second rotating wheel 23 and the rotating rod 24 rotate together, which will drive the flange joint fixed on the pad 241 to rotate together.

[0043] At this time, the welding rod 2612 on the telescopic platform 2611 is used to weld the interface position of the flange joint. While the rotating rod 24 is rotating, it will also drive the second turntable 243 to rotate. Under the rotation of the second turntable 243, the protruding part and the concave part will alternately stick to the sliding plate 261. Under the action of the spring 262, the sliding plate 261 will slide back and forth. At the same time, the sliding plate 261 will drive the telescopic platform 2611 to slide back and forth, so that the welding rod 2612 will move away from and closer to the flange joint, and uniformly weld the interface position of the flange joint.

[0044] It should be noted that during the process of the welding rod 2612 and the flange joint being moved closer and closer to each other, under the restriction of the limiting column 132, the oblique connecting column of the telescopic platform 2611 will slide on the limiting column 132. This means that during the reciprocating movement of the telescopic platform 2611, it will also extend and retract up and down under the restriction of the limiting column 132.

[0045] Example 2

[0046] Unlike Example 1, in order to ensure the strength and uniformity of the weld during the welding process, such as Figures 8-9 As shown, a third turntable 32 is rotatably connected to both sides of the second fixed column 31. A second rack 321 is fixedly connected to the top outer wall of the third turntable 32. The second rack 321 meshes with the third gears 312 on both sides. A first connecting rod 322 is fixedly connected to one side of the third turntable 32. A second connecting rod 33 is rotatably connected to the end of the first connecting rod 322 away from the third turntable 32. The end of the second connecting rod 33 away from the first connecting rod 322 is rotatably connected to the bent rod 245. The third turntable 32 has an extension rod 34 fixedly connected to the side away from the first connecting rod 322. The two extension rods 34 have a second transmission belt 35 sleeved on the outer wall of the end away from the third turntable 32. The other end of the second transmission belt 35 has a third wheel 36 on the inner side. The third wheel 36 is rotatably connected to the inner wall of the protective shell 1. The third wheel 36 has a fourth gear 361 fixedly connected to the side away from the inner wall of the protective shell 1. The fourth gear 361 meshes with the first rack 1311.

[0047] Therefore, in order to ensure the same amplitude of oscillation during the welding process, such as Figures 8-9As shown, during the rotation of the rotating rod 24, it will drive the bent rod 245 to rotate as well. Simultaneously, the rotation of the bent rod 245 will drive the first connecting rod 322 to move upwards and downwards. When the first connecting rod 322 rotates to the side closer to the second connecting rod 33, it will push the second connecting rod 33 downwards. When the first connecting rod 322 rotates to the side farther away from the second connecting rod 33, it will pull the second connecting rod 33 upwards. During the downward or upward movement of the second connecting rod 33, the third turntable 32 will rotate. Then, during the rotation of the third turntable 32, the third gear 312 on this side will rotate at a certain angle. The rotation of 2 will drive gear 1 311 and gear 2 3111 to rotate together. Gear 1 311 will then drive gear 3 312 on the other side to rotate together. At this time, gear 3 312 on the other side will drive turntable 32 on the other side to rotate together. Because gear 1 311 and gear 2 3111 are meshed with each other, they will rotate in opposite directions during the rotation of one of them. Therefore, turntable 32 on both sides will also rotate in opposite directions. Similarly, during the rotation of turntable 32 on both sides in opposite directions, the extension rods 34 on both sides will rotate in opposite directions.

[0048] When one side of the extension rod 34 rotates upward and the other side rotates downward, it pulls the second transmission belt 35. During the movement of the second transmission belt 35, it drives the third rotating wheel 36 and the fourth gear 361 to rotate together at a certain angle. Because the bending rod 245 is in a reciprocating downward and upward pulling effect on the first connecting rod 322 and the second connecting rod 33 during rotation, the extension rods 34 on both sides are also in a reciprocating up-and-down movement effect. At this time, when the fourth gear 361 rotates back and forth at a certain angle, it will be blocked by the first rack 1311, and the rotating table 13 will move together... The rotating table 13 rotates at a certain angle, and the telescopic table 2611 rotates together with it. At this time, the flange joint on the pad 241 and the rotating rod 24 rotate relative to each other with the rotation of the welding rod 2612. The left and right sliding of the welding rod 2612 on the second turntable 243 creates a regular oscillating welding effect of the welding rod 2612. This makes the uniform oscillation of the welding rod 2612 more uniform in heat distribution and weld shrinkage, thereby increasing the strength and uniformity of the weld. It can also help the gas to be discharged from the molten pool and avoid the generation of porosity.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flange joint welding processing device, comprising a protective shell (1) and a welding rod (2612), characterized in that: A platform (11) is fixedly connected to the top of the protective shell (1), and a rotating platform (13) is rotatably connected to the inner side of the platform (11). A telescopic platform (2611) for limiting the welding rod (2612) is provided on the top of the rotating platform (13). A welding assembly (2) for welding the flange base and the flange pipe interface is provided on the inner side of the protective shell (1). A toggle assembly (3) for swing welding is provided below the welding assembly (2). A rotating rod (24) for rotating the flange joint is provided on the inner side of the welding assembly (2). By fixing the flange joint with the welding assembly (2), the welding of the flange joint ring interface is completed by the rotating rod (24) and the welding rod (2612), and the swinging assembly (3) is used to complete the swinging of the welding rod (2612). The protective shell (1) is slidably connected to both sides of a support frame (111). A telescopic rod (12) is fixedly connected to the top of the support frame (111). The telescopic rod (12) passes through the support frame (111). A pressing plate (121) is fixedly connected to the lower end of the telescopic rod (12). A first turntable (131) is fixedly connected to the bottom of the rotating platform (13). A ring-shaped first rack (1311) is fixedly connected to the bottom of the first turntable (131). Wherein: The top of the rotating platform (13) is fixedly connected to a retractable limiting column (132). A toggle assembly (3) is provided below the rotating rod (24). The toggle assembly (3) includes a second fixed post (31). A cross groove is provided on the top of the second fixed post (31). The second fixed post (31) is rotatably connected to a first gear (311) and a second gear (3111) in the cross groove. The first gear (311) and the second gear (3111) are meshed. The first gear (311) is fixedly connected to a third gear (312) through a cross post passing through one side of the second fixed post (31). The second gear (3111) is also fixedly connected to another third gear (312) through a cross post passing through the other side of the second fixed post (31). The No. 2 fixed column (31) is rotatably connected to the two sides of the No. 3 turntable (32). The No. 2 rack (321) is fixedly connected to the top outer wall of the No. 3 turntable (32). The No. 2 rack (321) meshes with the No. 3 gear (312) on both sides. The No. 3 turntable (32) is fixedly connected to the one side of the No. 3 turntable (32). The No. 1 connecting rod (322) is rotatably connected to the No. 2 connecting rod (33) at the end away from the No. 3 turntable (32). The No. 2 connecting rod (33) is rotatably connected to the bent rod (245) at the end away from the No. 1 connecting rod (322). The three turntables (32) on both sides are fixedly connected to an extension rod (34) on the side away from the first connecting rod (322). The extension rods (34) on both sides are fitted with a second transmission belt (35) on the outer wall of the end away from the three turntables (32). The other end of the second transmission belt (35) is provided with a third wheel (36) on the inner side. The third wheel (36) is rotatably connected to the inner wall of the protective shell (1). The third rotating wheel (36) is fixedly connected to the fourth gear (361) on the side away from the inner wall of the protective shell (1), and the fourth gear (361) meshes with the first rack (1311).

2. The flange joint welding processing device according to claim 1, characterized in that: The welding assembly (2) includes a motor (21), which is fixedly connected to the bottom of the partition inside the protective shell (1). The output end of the motor (21) is fixedly connected to a first rotating wheel (22). A first transmission belt (221) is sleeved on the outer wall of the first rotating wheel (22). A second rotating wheel (23) is provided on the inner side of the other end of the first transmission belt (221). A rotating rod (24) is fixedly connected to the center of the second rotating wheel (23).

3. The flange joint welding processing device according to claim 2, characterized in that: A pad (241) is fixedly connected to the upper outer wall of the rotating rod (24). The pad (241) is set on the top of the rotating platform (13). A slide rail (242) is fixedly connected to the top periphery of the pad (241). A slider (2411) is slidably connected to the top of the slide rail (242). The slider (2411) is triangular, and the triangular inclined surface of the slider (2411) faces outward.

4. The flange joint welding processing device according to claim 3, characterized in that: The rotating rod (24) is fixedly connected to a second turntable (243) below the pad (241). The outer wall of the second turntable (243) is fixedly connected to multiple protrusions. A first fixed post (25) is provided on the outer wall of the rotating rod (24) below the second turntable (243). A sliding disk (244) is slidably connected to the upper outer wall of the rotating rod (24). A bent rod (245) is fixedly connected to the lower end of the rotating rod (24).

5. The flange joint welding processing device according to claim 4, characterized in that: An extension plate (251) is fixedly connected to one side of the first fixed column (25), and a fixed plate (26) is fixedly connected to the top of the extension plate (251). A sliding plate (261) is slidably connected to the inner side of the fixed plate (26). The sliding plate (261) and the second turntable (243) are on the same horizontal plane. A spring (262) is fixedly connected between the sliding plate (261) and the fixed plate (26). The top of the sliding plate (261) is fixedly connected to the telescopic platform (2611) through the rotating platform (13), and the welding rod (2612) is obliquely fixedly connected to the inner side of the telescopic platform (2611).

Images