Inner girth welding device, manufacturing method of tank container and tank container

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to an inner girth welding device, a manufacturing method of a tank container and the tank container. The inner girth welding device comprises a support assembly, a cross arm assembly, an overturning beam, a first rotating driver and a welding gun; the support assembly can drive the cross arm assembly to move in the first direction, the first end of the overturning beam is hinged to the cross arm assembly, the first rotary driver is connected with the cross arm assembly and the overturning beam and used for driving the overturning beam to rotate in the second direction, the welding gun is arranged at the second end of the overturning beam, and the overturning beam is a bent beam. The linear distance between the welding gun and the first rotary driver is smaller than the length of the overturning beam. When the inner circular seam is welded when the end socket sections are folded, the angle of the overturning beam can be adjusted through the first rotating driver, the front end of the overturning beam and the welding gun extend into the tank type container through the manhole, welding workers do not need to enter the tank type container from the manhole to work, and the welding work efficiency and the welding quality are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of welding equipment, and specifically relates to an inner annular seam welding device, a method for manufacturing a tank container, and a tank container. Background Art

[0002] Tank containers are usually welded from multiple segments. After the head segments are closed, welders need to enter the tank container through the manhole, install the welding device inside the tank container, and then turn on the power to weld the inner ring seam. The internal space of the tank container is narrow and the working environment of the welders is poor, which affects the welding efficiency and welding quality. Summary of the invention

[0003] The purpose of the present application is to provide an inner annular seam welding device, a method for manufacturing a tank container and a tank container, so as to improve welding work efficiency and welding quality.

[0004] In order to achieve the above object, the present application provides an inner annular seam welding device, comprising: Bracket assembly; A cross arm assembly, movably connected to the bracket assembly, the bracket assembly can drive the cross arm assembly to move along a first direction, and the cross arm assembly extends along the first direction; A flip beam, a first end of which is hingedly connected to the cross arm assembly; A first rotation driver, connecting the cross arm assembly and the flip beam, the first rotation driver being capable of driving the flip beam to rotate around a second direction, the second direction being perpendicular to the first direction; A welding gun, disposed at the second end of the flip beam, wherein a working end of the welding gun is away from the first rotary drive; Wherein, the flip beam is a curved beam, and the straight-line distance from the welding gun to the first rotary driver is smaller than the length of the flip beam.

[0005] Optionally, the first rotary driver can drive the flip beam to rotate so that the axis of the welding gun is parallel to a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0006] Optionally, the flip beam includes a first straight arm and a second straight arm connected to each other, the angle between the first straight arm and the second straight arm is 140~150 degrees, the first straight arm is connected to the cross arm assembly, the second straight arm is connected to the welding gun, and the angle between the second straight arm and the axis of the welding gun is 140~150 degrees.

[0007] Optionally, the inner annular seam welding device further includes a bidirectional regulator, and the cross arm assembly and the flip beam are connected via the bidirectional regulator, and the bidirectional regulator can drive the flip beam to move along the second direction and the third direction.

[0008] Optionally, the inner annular seam welding device also includes a laser tracker and a controller, the laser tracker is arranged on one side of the second direction of the welding gun, the laser tracker and the bidirectional regulator are both connected to the controller, the laser tracker can identify the weld, and the controller can control the bidirectional regulator to adjust the position of the welding gun so that the working end of the welding gun is aligned with the weld.

[0009] Optionally, the inner annular seam welding device also includes a flux delivery assembly, which includes a flux hopper and a first delivery pipe, the flux hopper is arranged on the flip beam, the first end of the first delivery pipe is connected to the flux hopper, and the second end of the first delivery pipe is located between the welding gun and the laser tracker.

[0010] Optionally, the flux delivery assembly includes a flux delivery recovery machine, a second delivery pipe, a third delivery pipe and a flux suction nozzle, the flux suction nozzle is arranged on the side of the welding gun away from the laser tracker, the flux delivery recovery machine is arranged on the cross arm assembly, the second delivery pipe connects the flux delivery recovery machine and the flux hopper, and the third delivery pipe connects the flux suction nozzle and the flux delivery recovery machine.

[0011] Optionally, the inner annular seam welding device further includes a welding wire feeding assembly, wherein the welding wire feeding assembly includes a welding wire reel and a first straightener, wherein the welding wire reel is disposed on the cross arm assembly, and the first straightener is disposed at the connection between the welding gun and the flip beam.

[0012] Optionally, the welding wire feeding assembly further includes a wire feeder and a second straightener, wherein the wire feeder is arranged between the welding gun and the first straightener, and the second straightener is arranged at one end of the wire feeder close to the welding wire reel.

[0013] Optionally, the cross arm assembly includes a main cross arm and a secondary cross arm that are coaxially connected, and the flip beam and the first rotation driver are arranged on the secondary cross arm; The support assembly includes a base, a column, a second rotation drive, a sliding seat, a first linear drive and a second linear drive. The column is arranged on the base, and the column extends along a third direction, and the third direction is perpendicular to the first direction and the second direction. The second rotation drive connects the column and the base, and the second rotation drive can drive the column to rotate around the third direction. The sliding seat is arranged on the column, and the first linear drive connects the sliding seat and the column, and the first linear drive can drive the sliding seat to move along the third direction. The second linear drive connects the main cross arm and the sliding seat, and the second linear drive can drive the main cross arm to move along the first direction.

[0014] The present application also provides a method for manufacturing a tank container, comprising: The tank body segment and the head segment are closed, an inner annular seam is formed at the connection between the tank body segment and the head segment, and a manhole is provided on the side of the head segment away from the tank body segment; Providing the above-mentioned inner annular seam welding device, and arranging the inner annular seam welding device on the side of the head segment away from the tank body segment; Move the cross arm assembly toward the side close to the head segment, and drive the flip beam to rotate through the first rotary driver during the movement, extend the welding gun and the front end of the flip beam into the head segment through the manhole, and make the working end of the welding gun close to the inner annular seam; The welding gun is started to weld the inner annular seam, and during the welding process, the tank body segment and the head segment are driven to rotate synchronously around their own axes to form the tank container.

[0015] The present application also provides a tank container, which is manufactured using the above-mentioned method for manufacturing the tank container.

[0016] The inner annular seam welding device, the manufacturing method of the tank container and the tank container disclosed in the present application have the following beneficial effects: In the present application, the inner annular seam welding device includes a support assembly, a cross arm assembly, a flip beam, a first rotary driver and a welding gun. The cross arm assembly is movably connected to the support assembly, the support assembly can drive the cross arm assembly to move in a first direction, the first end of the flip beam is hingedly connected to the cross arm assembly, the first rotary driver connects the cross arm assembly and the flip beam, and is used to drive the flip beam to rotate around a second direction, the welding gun is arranged at the second end of the flip beam, the flip beam is a curved beam, and the straight-line distance from the welding gun to the first rotary driver is less than the length of the flip beam. When welding the inner annular seam when the head segment is closed, the angle of the flip beam can be adjusted by the first rotary driver, and the front end of the flip beam and the welding gun can be extended into the tank container through the manhole, so that the welding worker does not need to enter the tank container from the manhole to work, thereby improving the welding work efficiency and welding quality.

[0017] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a front view schematic diagram of the inner annular seam welding device in the embodiment of the present application.

[0021] Figure 2 It is a left schematic view of the inner annular seam welding device in an embodiment of the present application.

[0022] Figure 3 It is a schematic front view of the inner annular seam welding device in an embodiment of the present application.

[0023] Figure 4 It is a schematic top view of the front part of the inner annular seam welding device in an embodiment of the present application.

[0024] Figure 5 It is a schematic diagram of the front right view of the inner annular seam welding device in the embodiment of the present application.

[0025] Figure 6 It is a flow chart of the method for making a tank container in an embodiment of the present application.

[0026] Description of reference numerals: 100, bracket assembly; 110, base; 120, column; 130, second rotary drive; 140, sliding seat; 150, first linear drive; 160, second linear drive; 200, cross arm assembly; 210, main cross arm; 220, secondary cross arm; 300, turning beam; 310, first straight arm; 320, second straight arm; 400, first rotary driver; 500, welding gun; 501, adapter plate; 502, welding slag baffle; 600, bidirectional regulator; 710, laser tracker; 720, camera; 730, searchlight; 800, flux conveying assembly; 810, flux hopper; 820, flux conveying recovery machine; 830, flux suction nozzle; 900, welding wire feeding assembly; 910, welding wire reel; 920, first straightener; 930, wire feeder; 20. Tank container; 21. Head segment; 22. Manhole; 23. Tank body segment. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0028] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0030] See also Figures 1 to 5As shown, the inner annular seam welding device in this embodiment includes a support assembly 100, a cross arm assembly 200, a flip beam 300, a first rotary driver 400 and a welding gun 500. The cross arm assembly 200 is movably connected to the support assembly 100, the support assembly 100 is installed on the ground, the support assembly 100 is used to support the cross arm assembly 200, and the support assembly 100 can drive the cross arm assembly 200 to move along a first direction (i.e., the X direction in the figure), and the cross arm assembly 200 extends along the first direction.

[0031] The first end of the flip beam 300 is hingedly connected to the cross arm assembly 200, and the first rotation driver 400 connects the cross arm assembly 200 and the flip beam 300. The first rotation driver 400 can drive the flip beam 300 to rotate around a second direction (i.e., the Y direction in the figure), and the second direction is perpendicular to the first direction. The welding gun 500 is arranged at the second end of the flip beam 300, and the working end of the welding gun 500 is far away from the first rotation driver 400. Among them, the flip beam 300 is a curved beam, and the straight-line distance from the welding gun 500 to the first rotation driver 400 is less than the length of the flip beam 300.

[0032] The tank container 20 is usually welded by a head segment 21 and a tank segment 23. An inner annular seam is formed at the connection between the head segment 21 and the tank segment 23. A manhole 22 is provided on the side of the head segment 21 away from the tank segment 23. When welding the inner annular seam when the head segment 21 is closed, the inner annular seam welding device can be provided on one side of the tank container 20, and the angle of the flip beam 300 is adjusted by the first rotary driver 400, and the front end of the flip beam 300 and the welding gun 500 are extended into the tank container 20 through the manhole 22, and the axis of the welding gun 500 is parallel to the vertical direction, and then the welding gun 500 is started to weld the inner annular seam. During the welding process of the welding gun 500, the tank container 20 is driven to rotate one circle around its own axis to complete the welding of the inner annular seam.

[0033] In the prior art, after the end segment 21 of the tank container 20 is closed, a welding worker needs to enter the tank container 20 through the manhole 22, then install the welding device inside the tank container 20, and then turn on the power supply to weld the inner annular seam. The internal space of the tank container 20 is narrow, and the working environment of the welding worker is poor, which affects the welding work efficiency and welding quality.

[0034] In this embodiment, the inner annular seam welding device includes a bracket assembly 100, a cross arm assembly 200, a flip beam 300, a first rotary driver 400 and a welding gun 500. The cross arm assembly 200 is movably connected to the bracket assembly 100, and the bracket assembly 100 can drive the cross arm assembly 200 to move along a first direction. The first end of the flip beam 300 is hingedly connected to the cross arm assembly 200. The first rotary driver 400 connects the cross arm assembly 200 and the flip beam 300, and is used to drive the flip beam 300 to rotate around a second direction. The welding gun 500 is arranged at the second end of the flip beam 300. The flip beam 300 is a curved beam. The straight-line distance from the welding gun 500 to the first rotary driver 400 is less than the length of the flip beam 300. When welding the inner annular seam when the head segment 21 is closed, the angle of the flip beam 300 can be adjusted by the first rotary driver 400, and the front end of the flip beam 300 and the welding gun 500 are extended into the tank container 20 through the manhole 22. There is no need for welding workers to enter the tank container 20 through the manhole 22 to work, thereby improving the welding work efficiency and welding quality.

[0035] In addition, the welding worker enters the tank container 20 through the manhole 22 to weld the inner annular seam, which makes it difficult for the worker to escape when encountering an abnormal situation. In this embodiment, the inner annular seam welding device extends the front end of the flip beam 300 and the welding gun 500 into the tank container 20 through the manhole 22, and does not require the welding worker to enter the tank container 20 through the manhole 22 to work, thereby eliminating the safety risk of the welding worker entering the tank container 20 to work.

[0036] In some embodiments, the first rotary driver 400 can drive the flip beam 300 to rotate so that the axis of the welding gun 500 is parallel to the third direction (i.e., the Z direction in the figure), and the third direction is perpendicular to the first direction and perpendicular to the second direction. The welding wire used for welding is located in the welding gun 500, and the welding wire is approximately located on the axis of the welding gun 500, and the welding wire used for welding is also approximately parallel to the third direction.

[0037] When the inner annular seam welding device is working, the flip beam 300 is rotated until the axis of the welding gun 500 is parallel to the third direction, that is, the welding gun 500 is rotated to a vertical direction, which can improve the inner annular seam welding quality.

[0038] For example, the flip beam 300 includes a first straight arm 310 and a second straight arm 320 connected to each other, and the angle between the first straight arm 310 and the second straight arm 320 is 140-150 degrees. The first straight arm 310 is connected to the cross arm assembly 200, and the second straight arm 320 is connected to the welding gun 500, and the angle between the second straight arm 320 and the axis of the welding gun 500 is 140-150 degrees. The second straight arm 320 and the welding gun 500 can be connected through an adapter plate 501, and the adapter plate 501 completes the angle between the second straight arm 320 and the axis of the welding gun 500.

[0039] The flip beam 300 is composed of two straight arms and has a simple structure, which is beneficial to reducing the manufacturing cost of the inner annular seam welding device.

[0040] It should be noted that the flip beam 300 can be formed by bending a straight arm, but is not limited thereto. The flip beam 300 can also be bent into an arc, depending on the specific situation.

[0041] In some embodiments, the cross arm assembly 200 includes a main cross arm 210 and a secondary cross arm 220 that are coaxially connected, and the flip beam 300 and the first rotation driver 400 are both arranged on the secondary cross arm 220. The cross sections of the main cross arm 210 and the secondary cross arm 220 are substantially rectangular or polygonal, and the cross section area of ​​the main cross arm 210 is greater than the cross section area of ​​the secondary cross arm 220.

[0042] The support assembly 100 includes a base 110, a column 120, a second rotary driver 130, a sliding seat 140, a first linear driver 150, and a second linear driver 160. The column 120 is disposed on the base 110, the base 110 is disposed on the ground, and the column 120 extends along a third direction. The second rotary driver 130 connects the column 120 and the base 110, and the second rotary driver 130 can drive the column 120 to rotate around the third direction. The sliding seat 140 is disposed on the column 120, the first linear driver 150 connects the sliding seat 140 and the column 120, and the first linear driver 150 can drive the sliding seat 140 to move along the third direction. The second linear driver 160 connects the main cross arm 210 and the sliding seat 140, and the second linear driver 160 can drive the main cross arm 210 to move along the first direction.

[0043] When the inner annular seam welding device is working, the angle between the main cross arm 210 and the axis of the tank container 20 can be adjusted by the second rotary driver 130, so that the main cross arm 210 and the axis of the tank container 20 are as parallel as possible, and then the height of the main cross arm 210 is adjusted by the first linear driver 150, and then the flip beam 300 is rotated by the first rotary driver 400, and the front end of the flip beam 300 and the welding gun 500 are extended into the tank container 20, and the depth of the flip beam 300 extending into the tank container 20 is adjusted by the second linear driver 160, so that the working end of the welding gun 500 is aligned with the inner annular seam as much as possible.

[0044] In some embodiments, the inner annular seam welding device further includes a bidirectional regulator 600, the secondary cross arm 220 and the flip beam 300 are connected by the bidirectional regulator 600, and the bidirectional regulator 600 can drive the flip beam 300 to move in the second direction and the third direction. In other words, the bidirectional regulator 600 can adjust the position of the welding gun 500 in the second direction and the position of the welding gun 500 in the third direction. After the front end of the flip beam 300 and the welding gun 500 are extended into the tank container 20, the position of the welding gun 500 in the second direction and the position of the welding gun 500 in the third direction can be adjusted in turn.

[0045] When the inner annular seam welding device is working, the working end of the welding gun 500 needs to be located directly above the lowest point of the inner annular seam and maintain an appropriate distance from the inner wall of the tank container 20. When the position of the welding gun 500 is adjusted by the bracket assembly 100, the adjustment range is large, and it is not easy to accurately control the position of the welding gun 500. The bidirectional regulator 600 can drive the flip beam 300 to move along the second direction and the third direction, and the adjustment range of the bidirectional regulator 600 is smaller than the adjustment range of the bracket assembly 100. By fine-tuning the position of the welding gun 500 through the bidirectional regulator 600, the position of the welding gun 500 when the inner annular seam welding device is working can be more accurately controlled.

[0046] In addition, when the distance between the main cross arm 210 and the axis of the tank container 20 in the second direction is too large, the position of the welding gun 500 in the second direction can be adjusted by the two-way regulator 600 so that the working end of the welding gun 500 is located directly above the lowest point of the inner annular seam.

[0047] In some embodiments, the inner annular seam welding device further includes a bidirectional regulator 600, the secondary cross arm 220 and the flip beam 300 are connected via the bidirectional regulator 600, and the bidirectional regulator 600 can drive the flip beam 300 to move in the first direction and the second direction.

[0048] Since the second rotary driver 130 can drive the column 120 to rotate about the third direction, when the distance between the main cross arm 210 and the axis of the tank container 20 in the second direction is too large, the main cross arm 210 can be rotated by the second rotary driver 130 so that the working end of the welding gun 500 is located directly above the lowest point of the inner annular seam. The adjustment range of the bidirectional regulator 600 is smaller than the adjustment range of the bracket assembly 100. By fine-tuning the position of the welding gun 500 in the first direction and the third direction through the bidirectional regulator 600, the position of the welding gun 500 can be more accurately controlled when the inner annular seam welding device is working.

[0049] It should be noted that the inner annular seam welding device may include a two-way adjuster 600, and the secondary cross arm 220 and the flip beam 300 are connected through the two-way adjuster 600. The two-way adjuster 600 can drive the flip beam 300 to move along the second direction and the third direction, but is not limited to this. The two-way adjuster 600 can also be replaced by a three-way adjuster, which can drive the flip beam 300 to move along the first direction, the second direction and the third direction.

[0050] When the inner annular seam welding device is working, the second rotary driver 130 can be used to drive the column 120 to rotate around the third direction, so that the main cross arm 210 is as parallel as possible to the axis of the tank container 20, and then the position of the welding gun 500 is adjusted by the first rotary driver 400, the first linear driver 150 and the second linear driver 160, so that the working end of the welding gun 500 is roughly located directly above the lowest point of the inner annular seam, and then the position of the welding gun 500 in the first direction, the second direction and the third direction are adjusted in turn by the three-way regulator to ensure that the position of the welding gun 500 is accurate when the inner annular seam welding device is working.

[0051] In some embodiments, the inner annular seam welding device further includes a laser tracker 710 and a controller. The laser tracker 710 is disposed on one side of the second direction of the welding gun 500. The laser tracker 710 and the bidirectional regulator 600 are both connected to the controller. The laser tracker 710 can identify the inner annular seam. The controller can control the bidirectional regulator 600 to adjust the position of the welding gun 500 according to the position of the inner annular seam identified by the laser tracker 710, so that the working end of the welding gun 500 is aligned with the inner annular seam. In addition, a slag baffle 502 can be disposed between the welding gun 500 and the laser tracker 710. The slag baffle 502 can block the slag, which can protect the laser tracker 710 and improve the accuracy of the laser tracker 710 in identifying the inner annular seam.

[0052] The inner annular seam welding device is provided with a laser tracker 710, which identifies the inner annular seam and automatically adjusts the position of the welding gun 500 according to the identified inner annular seam position, thereby improving the welding automation level, reducing the labor intensity of welding workers, and being conducive to improving welding work efficiency and welding quality.

[0053] In some embodiments, the inner annular seam welding device further includes a camera 720, a searchlight 730 and a monitor. The camera 720 can be arranged on the welding gun 500 or the flip beam 300 to photograph the welding position of the welding gun 500. The searchlight 730 is also arranged on the welding gun 500 or the flip beam 300 to illuminate the welding position of the welding gun 500 and improve the quality of the picture taken by the camera 720. The monitor can be arranged on the cross arm assembly 200, and the monitor is connected to the camera 720 for communication and playing the picture taken by the camera 720. The specific installation positions of the camera 720, the searchlight 730 and the monitor can be adjusted as needed, as long as it does not affect the monitoring of the welding position.

[0054] When the inner girth welding device is working, the welding worker can check the welding quality through the monitor, and when the laser tracker 710 recognizes inaccurate or other abnormal conditions occur, the inner girth welding device can be controlled in time to make adjustments.

[0055] In some embodiments, the welding gun 500 includes a gas pipeline, which is used to deliver the shielding gas to the welding position of the welding gun 500. That is, the welding method of the inner girth welding device can be gas shielded welding. In other embodiments, the inner girth welding device also includes a flux delivery assembly 800, and the flux delivery assembly 800 includes a flux hopper 810 and a first delivery pipe. The flux hopper 810 can be arranged on the flip beam 300, and the first end of the first delivery pipe is connected to the flux hopper 810, and the second end of the first delivery pipe is located between the welding gun 500 and the laser tracker 710. That is, the welding method of the inner girth welding device can be submerged arc welding. It should be understood that the connection between the welding gun 500 and the flip beam 300 can be designed to be a detachable connection, and the welding method of the inner girth welding device can be selected by replacing the welding gun 500.

[0056] The shielding gas of gas shielded welding can effectively protect the molten pool and weld during the welding process, prevent the intrusion of harmful gases such as oxygen and nitrogen in the air, greatly reduce the generation of defects such as pores and cracks in the weld, and improve the welding quality; the heat of the welding arc is concentrated, the welding speed is fast, and the heat-affected zone of the weld is relatively small, so the deformation of the weld is small. Submerged arc welding is carried out under the flux layer. The arc and the molten pool are covered by the flux and completely isolated from the air, which effectively prevents the intrusion of harmful gases in the air and has high weld quality; because the arc burns under the flux layer, most of the smoke and harmful gases generated during the welding process are absorbed and covered by the flux, reducing the harm to the health of the welder and the pollution to the environment, and improving working conditions.

[0057] The inner annular seam welding device can perform both gas shielded welding and submerged arc welding, so a suitable welding method can be selected according to factors such as the structure of the tank container 20, welding quality requirements and production costs.

[0058] In some embodiments, the flux delivery assembly 800 also includes a flux delivery recovery machine 820, a second delivery pipe, a third delivery pipe and a flux suction nozzle 830, the flux suction nozzle 830 is arranged on the side of the welding gun 500 away from the laser tracker 710, the second delivery pipe connects the flux delivery recovery machine 820 and the flux hopper 810, and the third delivery pipe connects the flux suction nozzle 830 and the flux delivery recovery machine 820.

[0059] When the inner annular seam welding device performs submerged arc welding, the flux conveying and recycling machine 820 can convey the flux to the flux hopper 810 through the second conveying pipe, and then convey it to the front of the welding position of the welding gun 500 through the first conveying pipe. In addition, the flux conveying and recycling machine 820 can also suck the unconsumed flux to the flux conveying and recycling machine 820 through the third conveying pipe and the flux suction nozzle 830, so as to realize the reuse of the unconsumed flux and reduce the consumption of the flux.

[0060] In some embodiments, the flux conveyor recovery machine 820 can be set on the cross arm assembly 200, the cross arm assembly 200 includes a main cross arm 210 and a secondary cross arm 220 that are coaxially connected, the flip beam 300 and the first rotation driver 400 are set on the secondary cross arm 220, and the flux conveyor recovery machine 820 can be set at one end of the main cross arm 210 away from the secondary cross arm 220.

[0061] The flux conveying recovery machine 820 and the auxiliary cross arm 220 are arranged at opposite ends of the main cross arm 210. When the inner ring seam welding device is working, the center of gravity of the inner ring seam welding device is closer to the column 120, and the stability of the inner ring seam welding device is better.

[0062] In some embodiments, the inner annular seam welding device further includes a welding wire feeding assembly 900, the welding wire feeding assembly 900 includes a welding wire reel 910 and a first straightener 920, and the welding wire reel 910 is arranged on the cross arm assembly 200. The cross arm assembly 200 includes a main cross arm 210 and a secondary cross arm 220 connected coaxially, the welding wire reel 910 can be arranged on the main cross arm 210, and the first straightener 920 is arranged at the connection between the welding gun 500 and the flip beam 300. When the second straight arm 320 and the welding gun 500 can be connected through the adapter plate 501, the first straightener 920 can be arranged on the adapter plate 501.

[0063] The welding wire used for welding by the welding gun 500 is wound on the welding wire reel 910. The first straightener 920 can straighten the welding wire that is bent and deformed due to being wound on the welding wire reel 910 and then deliver it to the welding gun 500, so as to avoid the welding quality being affected by the untimely delivery of the welding wire used for welding by the welding gun 500. The inner girth welding device adopts a continuous wire feeding method, and there is no need to frequently replace the welding wire during the welding process. It can realize automatic or semi-automatic welding, which can significantly improve the welding speed and production efficiency, and is particularly suitable for mass production and inner girth welding of long welds.

[0064] In some embodiments, the welding wire feeding assembly 900 further includes a wire feeder 930 and a second straightener, and the wire feeder 930 is disposed between the welding gun 500 and the first straightener 920, and can be specifically disposed on the secondary cross arm 220. The second straightener is disposed at one end of the wire feeder 930 close to the wire reel 910. It should be noted that the second straightener can be disposed at one end of the wire feeder 930 close to the wire reel 910, but is not limited thereto, and the second straightener can also be disposed at one end of the wire feeder 930 away from the wire reel 910, depending on the specific situation.

[0065] A wire feeder 930 is provided at the front end of the wire reel 910. The wire feeder 930 can drive the welding wire from the wire reel 910 to the welding gun 500, so as to avoid excessive wire feeding resistance leading to untimely welding wire feeding, thereby affecting welding quality. A second straightener is provided at the front end of the wire feeder 930. The welding wire is straightened by the second straightener, so as to further reduce the wire feeding resistance.

[0066] The present application also provides a method for manufacturing a tank container, see Figures 1 to 6 As shown, the method for making a tank container includes: S100: The tank body segment 23 and the head segment 21 are closed, an inner annular seam is formed at the connection between the tank body segment 23 and the head segment 21, and a manhole 22 is provided on the side of the head segment 21 away from the tank body segment 23; S200: providing an inner girth welding device, and arranging the inner girth welding device on a side of the head segment 21 away from the tank segment 23; S300: Move the cross arm assembly 200 toward the side close to the head segment 21, and during the movement, drive the flip beam 300 to rotate through the first rotation driver 400, extend the welding gun 500 and the front end of the flip beam 300 into the head segment 21 through the manhole 22, and make the working end of the welding gun 500 close to the inner annular seam; S400 : starting the welding gun 500 to weld the inner annular seam, and driving the tank body segment 23 and the head segment 21 to rotate synchronously around their own axes during the welding process to form a tank container 20 .

[0067] When welding the inner annular seam when the head segment 21 is closed, the angle of the flip beam 300 can be adjusted by the first rotary driver 400, and the front end of the flip beam 300 and the welding gun 500 are extended into the tank container 20 through the manhole 22. There is no need for welding workers to enter the tank container 20 through the manhole 22 to work, thereby improving the welding work efficiency and welding quality.

[0068] The present application also provides a tank container 20, which is manufactured by the manufacturing method of the tank container disclosed above. The tank container 20 includes a tank body segment 23 and a head segment 21 connected by welding, at least the connecting portion of the tank body segment 23 and the head segment 21 is a cylinder, the head segment 21 is a roughly circular cover, and a manhole 22 is provided on the side of the head segment 21 away from the tank body segment 23, and the manhole 22 is a circular hole or a polygonal hole.

[0069] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0071] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. An inner annular seam welding device, characterized in that: include: Bracket assembly; A cross arm assembly is movably connected to the bracket assembly, the bracket assembly can drive the cross arm assembly to move along a first direction, and the cross arm assembly extends along the first direction; A flip beam, a first end of which is hingedly connected to the cross arm assembly; A first rotation driver, connecting the cross arm assembly and the flip beam, the first rotation driver being capable of driving the flip beam to rotate around a second direction, the second direction being perpendicular to the first direction; A welding gun, disposed at the second end of the flip beam, wherein a working end of the welding gun is away from the first rotary drive; Wherein, the flip beam is a curved beam, and the straight-line distance from the welding gun to the first rotary driver is smaller than the length of the flip beam.

2. The inner annular seam welding device according to claim 1, characterized in that: The first rotary driver can drive the flip beam to rotate so that the axis of the welding gun is parallel to a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

3. The inner annular seam welding device according to claim 2, characterized in that: The flip beam includes a first straight arm and a second straight arm connected to each other, the angle between the first straight arm and the second straight arm is 140-150 degrees, the first straight arm is connected to the cross arm assembly, the second straight arm is connected to the welding gun, and the angle between the second straight arm and the axis of the welding gun is 140-150 degrees.

4. The inner annular seam welding device according to claim 2, characterized in that: The inner annular seam welding device further comprises a bidirectional regulator, through which the cross arm assembly and the flip beam are connected, and the bidirectional regulator can drive the flip beam to move along the second direction and the third direction.

5. The inner annular seam welding device according to claim 4, characterized in that: The inner annular seam welding device also includes a laser tracker and a controller. The laser tracker is arranged on one side of the second direction of the welding gun. The laser tracker and the bidirectional regulator are both connected to the controller. The laser tracker can identify the weld seam. The controller can control the bidirectional regulator to adjust the position of the welding gun so that the working end of the welding gun is aligned with the weld seam.

6. The inner annular seam welding device according to claim 5, characterized in that: The inner annular seam welding device also includes a flux delivery assembly, which includes a flux hopper and a first delivery pipe. The flux hopper is arranged on the flip beam, the first end of the first delivery pipe is connected to the flux hopper, and the second end of the first delivery pipe is located between the welding gun and the laser tracker.

7. The inner annular seam welding device according to claim 6, characterized in that: The flux conveying assembly includes a flux conveying recovery machine, a second conveying pipe, a third conveying pipe and a flux suction nozzle, the flux suction nozzle is arranged on the side of the welding gun away from the laser tracker, the flux conveying recovery machine is arranged on the cross arm assembly, the second conveying pipe connects the flux conveying recovery machine and the flux hopper, and the third conveying pipe connects the flux suction nozzle and the flux conveying recovery machine.

8. The inner annular seam welding device according to claim 2, characterized in that: The inner annular seam welding device also includes a welding wire feeding assembly, which includes a welding wire reel and a first straightener. The welding wire reel is arranged on the cross arm assembly, and the first straightener is arranged at the connection between the welding gun and the flip beam.

9. The inner annular seam welding device according to claim 8, characterized in that: The welding wire feeding assembly also includes a wire feeder and a second straightener. The wire feeder is arranged between the welding gun and the first straightener, and the second straightener is arranged at one end of the wire feeder close to the welding wire reel.

10. The inner annular seam welding device according to claim 1, characterized in that: The cross arm assembly comprises a main cross arm and a secondary cross arm connected coaxially, and the flip beam and the first rotation driver are arranged on the secondary cross arm; The support assembly includes a base, a column, a second rotation drive, a sliding seat, a first linear drive and a second linear drive. The column is arranged on the base, and the column extends along a third direction, and the third direction is perpendicular to the first direction and the second direction. The second rotation drive connects the column and the base, and the second rotation drive can drive the column to rotate around the third direction. The sliding seat is arranged on the column, and the first linear drive connects the sliding seat and the column, and the first linear drive can drive the sliding seat to move along the third direction. The second linear drive connects the main cross arm and the sliding seat, and the second linear drive can drive the main cross arm to move along the first direction.

11. A method for manufacturing a tank container, characterized in that: include: The tank body segment and the head segment are closed, an inner annular seam is formed at the connection between the tank body segment and the head segment, and a manhole is provided on the side of the head segment away from the tank body segment; Providing an inner girth welding device according to any one of claims 1 to 10, wherein the inner girth welding device is arranged on a side of the head segment away from the tank segment; Move the cross arm assembly toward the side close to the head segment, and drive the flip beam to rotate through the first rotary driver during the movement, extend the welding gun and the front end of the flip beam into the head segment through the manhole, and make the working end of the welding gun close to the inner annular seam; The welding gun is started to weld the inner annular seam, and during the welding process, the tank body segment and the head segment are driven to rotate synchronously around their own axes to form the tank container.

12. A tank container, characterized in that: The tank container is manufactured by the method for manufacturing a tank container according to claim 11.

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