A supporting device for ladle welding and a welding method

Abstract

The application provides a support device and a welding method for a ladle, and the welding device comprises a clamping and limiting module, a rotary driving module and an inclined push wheel module. The clamping and limiting module at the front of the support device has a multi-dimensional clamping mode, and the multi-dimensional clamping mode effectively clamps and fixes the special-shaped conical cylinder wall. The front part is provided with a stop limiting rubber wheel, which essentially eliminates the hidden danger of cylinder movement and ensures stable, safe and reliable operation. The rear part adopts a unique inclined push wheel combined with a cross shaft structure, which realizes self-adaptive pressing of the conical surface of the conical cylinder and the supporting wheel and leveling of the cylinder center. Through the ingenious combination of the front clamping and limiting module and the rear inclined push wheel module, the synergistic effect is achieved, and the comprehensive realization of the ring seam welding device for the welded ladle cylinder is fast disassembled and fast assembled, safe and reliable, and the welding quality is stable. In addition, the device can conveniently adjust the horizontal axis of the ladle, cover all specifications of the ring seam welding of the welded ladle cylinder and has strong applicability.

Description

Technical Field

[0001] This invention relates to the field of slag ladle welding technology, and in particular to a support device and welding method for slag ladle welding. Background Technology

[0002] The slag ladle is a key piece of equipment in the metallurgical industry used for receiving, transferring, and processing high-temperature molten slag. Due to the long-term exposure to rapid heating and cooling, heavy-load impact, and corrosive slag, the welding process of the slag ladle is subject to extremely high requirements. The slag ladle cylinder is mostly conical, with a small opening and a large opening at each end. The small opening is welded to the hemispherical bottom of the ladle. The thickness of the cylinder and the bottom plate is mostly between 80mm and 120mm. When the bottom is stacked, the weight exceeds 10 tons and the diameter exceeds 3 meters. The joint between the cylinder and the bottom is a circumferential weld.

[0003] The process requires that the weld bead be positioned close to the longitudinal direction (i.e., perpendicular to the ground) when using submerged arc welding. After the cylinder and the bottom of the slag pot are assembled as a whole, they need to be temporarily fixed to the clamping device by welding. Then, the clamping device, along with the cylinder and the bottom of the slag pot, is driven by a roller frame located at the small opening of the cylinder to rotate synchronously, so that the circumferential weld bead enters the welding station segment by segment. Because the cylinder is tapered, when its axis is placed horizontally and rotates around its own axis, instability or non-horizontal axis problems can easily occur, which will generate lateral thrust along the axis direction, causing the entire slag pot to continuously move towards the large opening. This can cause the weld bead to deviate from the intended position, or even cause the slag pot to slip off the roller frame, resulting in a serious safety accident.

[0004] Furthermore, the outer walls of the cylinder and the bottom of the ladle need to be temporarily fixed to the clamping device by welding. Although the welded connection is relatively reliable, the weld must be cut when removing the clamping device, which not only damages the base material of the workpiece but also makes the installation and disassembly process time-consuming and labor-intensive. At the same time, the roller frame structure used at the small end of the cylinder does not have a height adjustment function and cannot adapt to the support requirements of slag ladles of different sizes. Therefore, there is an urgent need to develop a welding auxiliary support device that is easy to assemble and disassemble, highly practical, and safe and controllable. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the present invention provides a support device for slag ladle welding, including a clamping and limiting module located on the front side and an inclined thrust wheel module located on the rear side.

[0006] The clamping and limiting module includes a T-shaped annular support ring, which includes an annular wing plate and an annular web plate. The outer edge of the annular web plate is perpendicularly connected to the inner wall of the annular wing plate. The annular support ring is fitted around the outer periphery of the large opening of the conical slag bag. A hemispherical bottom is connected to the small opening of the slag bag away from the large opening. The clamping and limiting module also includes U-shaped clamps. Multiple U-shaped clamps are evenly distributed along the circumference of the annular support ring, with their openings facing the slag bag to lock the front edge of the large opening of the slag bag to form a stop.

[0007] The inclined thrust wheel module includes a base with a symmetrical box on the base. The box can move in the left and right direction. A first rotating shaft is fixed inside the box and arranged inclined in the left and right direction. A Y-shaped bracket is connected to the first rotating shaft through a cross shaft. The upper part of the cross shaft has a first shaft hole and the lower part has a second shaft hole. The first shaft hole and the second shaft hole are perpendicular to each other. The main arm of the Y-shaped bracket is movably connected to the first shaft hole of the cross shaft. The second shaft hole is connected to the first rotating shaft through a positioning sleeve. Both arms of the Y-shaped bracket are equipped with support wheels, which contact the outer wall of the small opening of the slag bag cylinder.

[0008] Optionally, it also includes a rotary drive module located below the clamping and limiting module. The rotary drive module includes a supporting steel frame located on the ground. Y-shaped mounting brackets are fixed on both the left and right sides of the supporting steel frame. Both arms of the Y-shaped mounting brackets are equipped with drive wheels. The drive wheels contact the outer wall surface of the annular wing plate to drive the annular support ring and the cylinder to rotate synchronously.

[0009] Optionally, the middle part of the supporting steel is also provided with a limiting rubber wheel, the rotating shaft of the limiting rubber wheel is in a vertical state, and the limiting rubber wheel abuts against the front edge of the large opening of the slag bag cylinder.

[0010] Optionally, the clamping and limiting module also includes a clamping mechanism. Multiple clamping mechanisms are evenly distributed along the circumference of the annular support ring. The clamping mechanism includes two inclined clamping members, which are respectively fixed to the front and rear sides of the annular web. The inclined clamping members have radially arranged clamping bolts, and the ends of the clamping bolts abut against the outer wall of the cylinder.

[0011] Optionally, the end of the clamping bolt located on the rear side of the annular web is closer to the axis than the end of the clamping bolt located on the front side of the annular web.

[0012] Optionally, the base surface of the inclined thrust wheel module is fixed with a rack arranged in the left-right direction, and the housing is provided with a gear that meshes with the rack. A motor coaxially connected to the gear drives the gear to rotate, causing the housing to move.

[0013] Optionally, a limiting rod parallel to the rack is also fixed to the surface of the base, and the limiting rod passes through the box to limit the movement trajectory of the box.

[0014] Optionally, the housing is further provided with two first limiting shafts parallel to the first rotating shaft. The two first limiting shafts are respectively located on the front and rear sides of the first rotating shaft to limit the rotation range of the Y-shaped bracket around the first rotating shaft.

[0015] The housing is also provided with two second limiting shafts parallel to the first shaft hole. The two second limiting shafts are respectively located on the left and right sides of the Y-shaped bracket to limit the rotation range of the Y-shaped bracket around the first shaft hole.

[0016] Optionally, the clamping plate of the U-shaped clamp is provided with bolts that clamp the cylinder from the inner side wall of the cylinder.

[0017] The present invention also provides a welding method for slag ladle welding using the aforementioned support device, comprising the following steps:

[0018] S1. A bevel is pre-cut at the joint between the slag bag cylinder and the bottom of the bag, and then the parts are assembled and fixed into a whole.

[0019] S2. Place the clamping and limiting module on a horizontal surface, hoist the cylindrical workpiece into the annular support ring, and use the opening of the U-shaped clamp to lock the edge of the large opening of the cylinder. Fix all bolts, including the inclined clamping parts.

[0020] S3. Place the cylinder with the annular support ring horizontally, then hoist it slowly into the welding device. Place the large opening of the cylinder on the rotary drive module and align it, while the small opening of the cylinder falls onto the inclined thrust wheel module. At this point, release the hook, start the motor to move the box, and begin adjusting the position of the cylinder and the overall central axis of the bottom of the box. Gradually lift it until the central axis is in a horizontal position, then stop the motor and lock the position. The adjustment work is now complete, and the subsequent welding process can begin.

[0021] As described above, this invention provides a support device and welding method for slag ladle welding. The welding device includes a clamping and limiting module, a rotary drive module, and an inclined thrust wheel module. The front of the support device employs a unique T-shaped clamping device with multi-dimensional clamping capabilities, effectively clamping and fixing the irregularly shaped conical cylinder wall from multiple dimensions. A stop-limiting rubber wheel at the front eliminates the risk of cylinder movement, ensuring stable and reliable operation. The rear employs a unique inclined thrust wheel combined with a cross-axis structure, enabling self-adaptive clamping between the conical surface of the conical cylinder and the supporting wheel, and leveling of the cylinder center. The ingenious combination of the front clamping and limiting module and the rear inclined thrust wheel module achieves a synergistic effect, comprehensively realizing quick assembly and disassembly of the slag ladle cylinder circumferential weld welding device, ensuring safety, reliability, and stable weld quality, achieving unexpectedly good results. This welding device has low manufacturing and maintenance costs, is simple to operate, and is highly practical. Furthermore, the device allows for easy adjustment of the slag ladle's horizontal axis, covering circumferential weld welding of all specifications of slag ladle cylinders, making it extremely versatile. Attached Figure Description

[0022] Figure 1 The diagram shown is a schematic representation of the overall structure of the support device in this invention.

[0023] Figure 2 The diagram shown is a structural schematic of the clamping and limiting module in this invention.

[0024] Figure 3 The diagram shown is a structural schematic of the rotary drive module in this invention.

[0025] Figure 4 The diagram shown is a structural schematic of the inclined thrust wheel module in this invention.

[0026] Figure 5 The diagram shows the internal structure of the box of the inclined thrust wheel module in this invention.

[0027] Figure 6 The diagram shows the orientation of the first limiting axis and the second limiting axis in this invention.

[0028] Figure 7 The diagram shows the connection between the cross shaft and the first rotating shaft in this invention.

[0029] Figure 8 The diagram shown is a schematic representation of the cross axis structure in this invention.

[0030] Figure 9 The diagram shown is a schematic diagram of the force analysis at the large opening of the cylinder in this invention.

[0031] Figure 10 The diagram shown is a force analysis diagram of the small opening of the cylinder in this invention.

[0032] Figure 11 The diagram shows the assembly process of the welding method in this invention.

[0033] Figure 12 The diagram shows a flow chart of the welding method in this invention.

[0034] Component designation explanation

[0035] Clamping and limiting module 1; Rotation drive module 2; Inclined thrust wheel module 3; Annular support ring 11; Annular wing plate 111; Annular web plate 112; Cylinder body 41; Bottom 42; U-shaped clamp 12; Inclined clamping component 13; Supporting steel 21; Y-shaped mounting bracket 22; Limiting rubber wheel 23; Base 31; Rack 32; Limiting rod 33; Box body 34; Gear 35; Y-shaped bracket 36; First rotating shaft 37; First limiting shaft 38; Positioning sleeve 39; Cross shaft 310; First shaft hole 311; Second shaft hole 312; Second limiting shaft 313. Detailed Implementation

[0036] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0037] In the detailed description of embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0038] For ease of description, spatial relation terms such as “below,” “under,” “lower than,” “below,” “above,” and “upper” may be used herein to describe the relationship between one element or feature shown in the accompanying drawings and other elements or features. It will be understood that these spatial relation terms are intended to include directions other than those depicted in the drawings for the device in use or operation. Furthermore, when a layer is referred to as being “between” two layers, it can be the only layer between the two layers, or there may be one or more layers in between. The phrase “between” as used herein includes both endpoint values.

[0039] In the context of this application, the structure described above the first feature may include embodiments in which the first and second features are formed in direct contact, or embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0040] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0041] like Figure 1 As shown, the present invention provides a support device for slag ladle welding, including a clamping and limiting module 1 located on the front side and an inclined thrust wheel module 3 located on the rear side.

[0042] like Figure 2 As shown, the clamping and limiting module 1 includes an annular support ring 11 with a T-shaped cross section. The annular support ring 11 includes an annular wing plate 111 and an annular web plate 112. The outer edge of the annular web plate 112 is perpendicularly connected to the inner wall surface of the annular wing plate 111. The annular support ring 11 is fitted around the large opening of the conical cylinder 41 of the slag bag. The end of the cylinder 41 away from the large opening is a small opening, and a hemispherical bottom 42 is connected to the small opening.

[0043] The clamping and limiting module 1 also includes a U-shaped clamp 12. Multiple U-shaped clamps 12 are evenly distributed along the circumference of the annular support ring. The U-shaped clamps 12 are fixedly connected to the annular web plate 112, and their openings face the cylinder 41 to clamp the edge of the cylinder 41 to form a stop and prevent the cylinder from sliding.

[0044] The clamping and limiting module 1 also includes a clamping mechanism. Multiple clamping mechanisms are evenly distributed along the circumference of the annular support ring. Each clamping mechanism includes two inclined clamping members 13, which are fixed to the front and rear sides of the annular web plate, respectively. Each inclined clamping member 13 has a radially arranged clamping bolt, the end of which abuts against the outer wall of the cylinder 41. The end of the clamping bolt located on the rear side of the annular web plate 112 is closer to the axis than the end of the clamping bolt located on the front side of the annular web plate 112, to adapt to the natural shape of the tapered cylinder where the diameter gradually decreases from the large opening to the small opening. Because the rear bolt is closer to the axis, it can maintain contact with the thinner segments of the cylinder, while the front bolt contacts the thicker large opening segment, thus achieving uniform clamping along the entire length. While performing the clamping function, the clamping bolts also play an important role in adjusting the concentricity of the annular support ring and the cylinder. Because there are many clamping bolts and they can be adjusted independently, they can effectively eliminate the eccentricity caused by local deformation or the machining error of the support ring, ensuring that the slag pot rotates smoothly and the weld trajectory is accurate during welding.

[0045] Specifically, the number of U-shaped clamps 12 is set to 4, and the number of clamping mechanisms is 8. The two adjacent clamping mechanisms along the circumference are spaced at 45 degrees. The extension length of the clamping bolt matches the taper of the cylinder, generating radial clamping force on the conical surface of the cylinder and pushing force towards the large opening of the cylinder. The U-shaped clamps 12 are firmly welded to the annular support ring 11. A U-shaped groove is formed between the two opposing clamping plates of the U-shaped clamps 12. The U-shaped groove generates a reverse pushing force on the large opening of the cylinder, which, in conjunction with the clamping mechanisms, generates clamping force to firmly hold the cylinder. The clamping plates of the U-shaped clamps 12 are also equipped with a set of bolts, which generate radial tension force from the inner side wall of the cylinder to assist in clamping the cylinder.

[0046] Furthermore, the rotary drive module 2 is located below the clamping and limiting module 1, as follows: Figure 3 As shown, the rotary drive module 2 includes a supporting steel section 21 located on the ground. Y-shaped mounting brackets 22 are fixed to both the left and right sides of the supporting steel section 21. Drive wheels are mounted on the two arms of each Y-shaped mounting bracket 22. The drive wheels contact the outer wall surface of the annular wing plate 111 to drive the annular support ring 11 and the cylinder 41 to rotate synchronously. Synchronous dual motors are used on both sides of the supporting steel section 21 to provide the power source for the cylinder's rotation.

[0047] Furthermore, a limiting rubber wheel 23 is provided in the middle of the supporting steel 21. The rotating shaft of the limiting rubber wheel 23 is vertical, and the limiting rubber wheel 23 abuts against the front edge of the large opening of the slag bag cylinder 41. When the cylinder rotates eccentrically, it plays a stopping function. At the same time, the rubber wheel itself can rotate with the cylinder, converting sliding friction into rolling friction, avoiding hard impact damage to the cylinder end edge. In addition, the rubber material can protect the cylinder base material from scratches.

[0048] Furthermore, such as Figures 4 to 8As shown, the inclined thrust wheel module 3 includes a base 31, on which a symmetrical box 34 is provided. The box 34 can move in the left and right direction. A first rotating shaft 37 is provided inside the box 34, and the first rotating shaft 37 is arranged at an inclination in the left and right direction. A Y-shaped bracket 36 is connected to the first rotating shaft 37 through a cross shaft 310. The upper part of the cross shaft 310 has a first shaft hole 311, and the lower part has a second shaft hole 312. The first shaft hole 311 is arranged in the front and back direction, and the first shaft hole 311 and the second shaft hole 312 are perpendicular to each other. The main arm of the Y-shaped bracket 36 is movably connected to the first shaft hole 311 of the cross shaft 310, and the second shaft hole 312 is assembled and connected to the first rotating shaft 37 through a positioning sleeve 39. Both arms of the Y-shaped bracket 36 are equipped with support wheels, which contact the outer wall of the small opening of the slag bag cylinder 41.

[0049] Specifically, during the entire bonding process between the support roller and the outer wall of the cylinder, the cross shaft 310 structure plays a crucial role in attitude adjustment. The cross shaft 310 has a first shaft hole 311 and a second shaft hole 312, whose axes are spatially perpendicular, thus providing the Y-shaped bracket 36 with two degrees of rotational freedom. The first shaft hole 311 allows the Y-shaped bracket 36 to swing left and right to adapt to changes in the cylinder's diameter; the second shaft hole 312 allows the Y-shaped bracket 36 to swing back and forth to compensate for angular deviations caused by cylinder tilt and taper. This bidirectional rotational adjustment capability ensures that the support roller can fit optimally against the cylinder surface at any contact point.

[0050] Furthermore, a rack 32 arranged in the left-right direction is fixed to the surface of the base 31, and a gear 35 meshing with the rack is provided inside the housing 34. A motor coaxially connected to the gear 35 drives the gear 35 to rotate, causing the housing to move. A limiting rod 33 parallel to the rack 32 is also fixed to the surface of the base 31. The limiting rod 33 passes through the housing 34 to restrict the movement trajectory of the housing and prevent deviation.

[0051] Furthermore, the housing 34 is also provided with two first limiting shafts 38 parallel to the first rotating shaft 37. The two first limiting shafts 38 are respectively located on the front and rear sides of the first rotating shaft 37 to limit the rotation range of the Y-shaped bracket 36 around the first rotating shaft 37 and to provide a certain supporting function for the Y-shaped bracket. The housing is also provided with two second limiting shafts 313 parallel to the first shaft hole 311. The two second limiting shafts are respectively located on the left and right sides of the Y-shaped bracket 36 to limit the rotation range of the Y-shaped bracket 36 around the first shaft hole.

[0052] Perform a stress analysis on the large opening of the cylinder. For example... Figure 9As shown, the U-shaped clamp's bolts generate downward pressure F2, the cylinder's own weight G, and the gravity has a component force along the conical surface pointing downwards to the left, i.e., a lateral force G′. The U-shaped clamp has a thrust force F3 pointing upwards to the right, and the two inclined clamping parts generate upward clamping forces F1-1 and F1-2 on the cylinder. All forces work together on the cylinder, making the cylinder securely clamped within the annular support ring. The limiting rubber wheel is fixed in the middle of the rotary drive module, and only generates a thrust when the cylinder moves downwards to the left. The magnitude of the thrust force cancels out the lateral force, preventing lateral movement. The rotary drive module achieves secure clamping and stable rotation of the cylinder.

[0053] Force analysis of the inclined thrust wheel module at the small opening of the cylinder. For example... Figure 10 As shown, the dual motors at the bottom generate a driving force F5, which propels the entire housing towards the center. This force acts on the Y-shaped bracket, which has two supporting rollers. As the driving force F5 continues to push towards the center, both rollers are forced into contact and pressed firmly against the cylinder. Simultaneously, the tapered shape of the cylinder generates downward pressure, causing the tapered surfaces of the rollers to adapt to the tapered shape of the cylinder. During this process, the cross shaft plays a crucial role. The first and second shaft holes of the cross shaft allow for two-dimensional rotational adjustment. Under the continued driving force of the motors, the two housings gradually approach each other. The Y-shaped bracket has bidirectional swing freedom, allowing the supporting rollers to maintain self-adaptation to the tapered shape of the cylinder, ensuring that both rollers are in tight contact with the cylinder. The cylinder and the bottom workpiece are gradually lifted upwards, meaning the central axis of the cylinder and the bottom workpiece is adjusted. When the central axis reaches a horizontal position, which is the ideal height required for welding, the motor stops and remains locked, completing the axis adjustment of the cylinder and the bottom workpiece.

[0054] Based on the aforementioned support device, the present invention also provides a welding method for slag ladle welding using the support device, such as... Figure 11 , Figure 12 As shown, it includes the following steps:

[0055] S1. A bevel is pre-made at the joint between the slag bag cylinder and the bottom of the bag, and the parts are assembled and fixed into a whole. The process can be temporarily fixed by welding.

[0056] S2. Place the clamping and limiting module on a horizontal surface, hoist the cylindrical workpiece into the annular support ring, and use the opening of the U-shaped clamp to lock the edge of the large opening of the cylinder. Fix all bolts, including the inclined clamping parts.

[0057] S3. Place the entire cylinder with the annular support ring horizontally (with the central axis at a horizontal position), then hoist it slowly into the welding device. Place the large opening of the cylinder on the rotary drive module and align it. The contact area between the drive wheel and the annular support ring should be more than four-fifths. Place the small opening of the cylinder on the inclined thrust wheel module. At this time, release the hook, start the motor to move the box, and begin adjusting the central axis position of the cylinder and the bottom of the box. Gradually lift it to the horizontal position of the central axis, then stop the motor, lock the position, and the adjustment is complete. Prepare for welding.

[0058] In summary, this invention provides a support device and welding method for slag ladle welding. The welding device includes a clamping and limiting module, a rotary drive module, and an inclined thrust wheel module. The clamping and limiting module includes an annular support ring, a U-shaped clamp, and a clamping mechanism. The annular support ring is fitted around the outer periphery of the large opening of the slag ladle body. The U-shaped clamp clamps the edge of the large opening of the body to form a stop. The clamping bolts of the clamping mechanism are used to clamp the conical surface of the body and ensure the concentricity of the annular support ring and the body. The rotary drive module is located below the clamping and limiting module and is used to drive the annular support ring and the slag ladle body to rotate synchronously. The inclined thrust wheel module includes a base, a housing, and a Y-shaped bracket. The two housings gradually approach each other under the drive of a motor, and the Y-shaped bracket has bidirectional swing freedom, allowing the supporting rollers to always maintain self-adaptation to the cone of the body. This ensures that both rollers are in tight contact with the body, and the body and the bottom workpiece are gradually lifted upwards until the central axis of the body and the bottom is adjusted to a horizontal position.

[0059] The front of this support device features a unique T-shaped clamping mechanism with multi-dimensional clamping capabilities. This single device effectively clamps and secures the irregularly shaped conical cylinder wall from multiple dimensions. A stop-and-limit rubber wheel at the front eliminates the risk of cylinder movement, ensuring stable and reliable operation. The rear employs a unique inclined thrust wheel combined with a cross-axis structure, enabling self-adaptive clamping between the conical surface of the cylinder and the supporting wheel, as well as cylinder center leveling. The ingenious combination of the front clamping and limiting module and the rear inclined thrust wheel module achieves a synergistic effect, comprehensively realizing quick assembly and disassembly of the welding slag bag cylinder circumferential weld, ensuring safety, reliability, and stable weld quality, yielding unexpectedly good results. This welding device boasts low manufacturing and maintenance costs, simple operation, and high practicality. Furthermore, the device allows for easy adjustment of the slag bag's horizontal axis, covering circumferential welds of all sizes of welding slag bag cylinders, making it extremely versatile.

[0060] This support device can completely replace traditional welding fixing methods, making reasonable use of bolt structures to achieve quick disassembly and assembly, significantly improving efficiency, saving approximately 4 man-hours per slag bale. It also saves on subsequent base material repair costs, including comprehensive costs such as repair welding, grinding, and flaw detection, approximately 800 yuan per slag bale. With an annual production of 1000 slag bales, the economic benefits exceed 800,000 yuan, and can sustainably generate economic benefits. The slag bale's central axis can be adjusted with a single click, ensuring the submerged arc welding fusion angle during circumferential welding, guaranteeing the execution of the welding process, and achieving 100% weld penetration that meets quality requirements.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A support device for slag bag welding, characterized in that, It includes a clamping and limiting module located on the front side and an inclined thrust wheel module located on the rear side; The clamping and limiting module includes a T-shaped annular support ring, which includes an annular wing plate and an annular web plate. The outer edge of the annular web plate is perpendicularly connected to the inner wall of the annular wing plate. The annular support ring is fitted around the outer periphery of the large opening of the conical slag bag. A hemispherical bottom is connected to the small opening of the slag bag away from the large opening. The clamping and limiting module also includes U-shaped clamps. Multiple U-shaped clamps are evenly distributed along the circumference of the annular support ring, with their openings facing the slag bag to lock the front edge of the large opening of the slag bag to form a stop. The inclined thrust wheel module includes a base with a symmetrical box on the base. The box can move in the left and right direction. A first rotating shaft is fixed inside the box and arranged inclined in the left and right direction. A Y-shaped bracket is connected to the first rotating shaft through a cross shaft. The upper part of the cross shaft has a first shaft hole and the lower part has a second shaft hole. The first shaft hole and the second shaft hole are perpendicular to each other. The main arm of the Y-shaped bracket is movably connected to the first shaft hole of the cross shaft. The second shaft hole is connected to the first rotating shaft through a positioning sleeve. Both arms of the Y-shaped bracket are equipped with support wheels, which contact the outer wall of the small opening of the slag bag cylinder.

2. The support device for slag bag welding according to claim 1, characterized in that: It also includes a rotary drive module located below the clamping and limiting module. The rotary drive module includes a supporting steel frame located on the ground. Y-shaped mounting brackets are fixed on both the left and right sides of the supporting steel frame. Both arms of the Y-shaped mounting brackets are equipped with drive wheels. The drive wheels contact the outer wall surface of the annular wing plate to drive the annular support ring and the cylinder to rotate synchronously.

3. The support device for slag ladle welding according to claim 2, characterized in that: The middle part of the supporting steel is also provided with a limiting rubber wheel. The rotating shaft of the limiting rubber wheel is in a vertical state, and the limiting rubber wheel abuts against the front edge of the large opening of the slag bag cylinder.

4. The support device for slag ladle welding according to claim 2, characterized in that: The clamping and limiting module also includes a clamping mechanism. Multiple clamping mechanisms are evenly distributed along the circumference of the annular support ring. The clamping mechanism includes two inclined clamping members, which are respectively fixed on the front and rear sides of the annular web. The inclined clamping members have radially arranged clamping bolts, and the ends of the clamping bolts abut against the outer wall of the cylinder.

5. The support device for slag bag welding according to claim 4, characterized in that: The end of the clamping bolt located on the rear side of the annular web is closer to the axis than the end of the clamping bolt located on the front side of the annular web.

6. The support device for slag ladle welding according to claim 2, characterized in that: The base surface of the inclined thrust wheel module is fixed with a rack arranged in the left and right direction. The box is equipped with a gear that meshes with the rack. A motor coaxially connected to the gear drives the gear to rotate, causing the box to move.

7. The support device for slag ladle welding according to claim 6, characterized in that: The base surface is also fixed with a limiting rod parallel to the rack, which penetrates the box to limit the movement trajectory of the box.

8. The support device for slag ladle welding according to claim 2, characterized in that: The box is also provided with two first limiting shafts parallel to the first rotating shaft. The two first limiting shafts are respectively located on the front and rear sides of the first rotating shaft to limit the rotation range of the Y-shaped bracket around the first rotating shaft. The housing is also provided with two second limiting shafts parallel to the first shaft hole. The two second limiting shafts are respectively located on the left and right sides of the Y-shaped bracket to limit the rotation range of the Y-shaped bracket around the first shaft hole.

9. The support device for slag ladle welding according to claim 2, characterized in that: The clamping plate of the U-shaped clamp is equipped with bolts, which clamp the cylinder from the inner side wall of the cylinder.

10. A welding method for slag ladle welding using the support device described in any one of claims 2-9, characterized in that, Includes the following steps: S1. A bevel is pre-cut at the joint between the slag bag cylinder and the bottom of the bag, and then the parts are assembled and fixed into a whole. S2. Place the clamping and limiting module on a horizontal surface, hoist the cylindrical workpiece into the annular support ring, and use the opening of the U-shaped clamp to lock the edge of the large opening of the cylinder. Fix all bolts, including the inclined clamping parts. S3. Place the cylinder with the annular support ring horizontally, then hoist it slowly into the welding device. Place the large opening of the cylinder on the rotary drive module and align it, while the small opening of the cylinder falls onto the inclined thrust wheel module. At this point, release the hook, start the motor to move the box, and begin adjusting the position of the cylinder and the overall central axis of the bottom of the box. Gradually lift it until the central axis is in a horizontal position, then stop the motor and lock the position. The adjustment work is now complete, and the subsequent welding process can begin.

Images