Modular combined steel casing welding device

Abstract

The application provides a modular combined steel casing welding device, and belongs to the technical field of welding fixing devices.It solves the technical problems of poor precision of the existing steel casing welding device during butt welding and poor welding quality of the inner wall of the steel casing after welding.A modular combined steel casing welding device comprises two side frames, a guide rod fixedly connected between the two side frames, and a rotating supporting assembly slidingly connected to the outer wall of the guide rod.In the application, the rotating supporting assembly is movably arranged on the surface of the side frame, so that the rotating supporting assembly can drive two steel casing bodies to synchronously rotate on both sides, ensuring the rotation precision of the two steel casing bodies during welding, facilitating precise welding of the two butt-jointed steel casing bodies by a welding gun, and ensuring the welding effect of the steel casing by internally arranging an internal polishing assembly in the steel casing body, so that the internal polishing assembly polishes the weld joint of the inner wall of the welded steel casing.

Description

Technical Field

[0001] This invention belongs to the technical field of welding fixing devices, and relates to a steel casing welding device, particularly a modular combined steel casing welding device. Background Technology

[0002] During the manufacturing process of steel casings, after the various structures are formed, they are typically connected and fixed together by welding. To improve stability during welding and prevent deformation of the steel casing due to improper handling, welding equipment is usually used to enhance stability. However, most current welding equipment cannot accurately position the steel casing, leading to wobbling and causing inconvenience to the welding operation.

[0003] A search revealed a Chinese patent document disclosing a welding device for steel casings [Application No.: CN202411380498.9; Publication No.: CN119260248A]. This welding device for steel casings includes a housing with an inlet and an outlet, and a welding mechanism housed within the housing. The welding mechanism includes a mounting box, a welding head, a purification box, a piston cylinder, a piston block, and a drive assembly for driving the piston block to reciprocate along the length of the piston cylinder. The mounting box is fixedly connected to the housing. The welding head, purification box, and piston cylinder are all fixedly connected to the mounting box. The piston block is slidably connected to the piston cylinder. The piston cylinder is equipped with an inlet pipe and an outlet pipe. The two ends of the inlet pipe are respectively connected to the piston cylinder and the purification box. The outlet pipe is connected to the piston cylinder and communicates with the piston cylinder.

[0004] Although the welding device for steel casings disclosed in this patent can cool the weld during welding, the welding of the steel casing involves joining two sections of steel casing together. During the welding process, instability can easily cause the steel casing to shift, which seriously affects the welding effect. The current steel casing welding device cannot grind the inner wall of the weld seam, resulting in poor welding quality inside the steel casing and affecting the installation effect and internal flow of the steel casing. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a modular combined steel casing welding device. The technical problem this invention aims to solve is: how to achieve precision in butt welding of steel casings and improve the welding quality of the inner wall of the steel casing after welding.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A modular combined steel casing welding device includes two side frames, a guide rod is fixedly connected between the two side frames, and a support and rotation assembly is slidably connected to the outer wall of the guide rod. The support and rotation assembly includes two moving blocks, and the two moving blocks are slidably connected to the outer wall of the guide rod in parallel. Two adjusting seats are slidably connected to the surface of the moving blocks, and the top of each adjusting seat is rotatably connected to a support roller.

[0008] One of the movable blocks has a side plate fixedly connected to its outer side, and a rotating rod is rotatably connected to one side of the side plate. The rotating rod is driven by a drive motor. A gear column is fixedly connected to the outer wall of the rotating rod. Two end face gears are meshed on the surface of the gear column, and the two end face gears are correspondingly arranged on one side of the two support rollers.

[0009] A steel casing body is fitted between the two support rollers, and the two steel casing bodies are respectively located above the two moving blocks, with the joint of the steel casing body located between the two moving blocks;

[0010] The steel casing body is internally connected to an internal grinding assembly, and a limiting welding unit is provided on the outer side of the steel casing body, with the limiting welding unit located between two moving blocks.

[0011] The internal polishing assembly includes two symmetrically arranged movable polishing units, and the two movable polishing units are detachably connected.

[0012] The mobile grinding unit includes a mounting plate, which is movably installed inside the steel casing body. Multiple telescopic rods are slidably connected to the surface of the mounting plate. The multiple telescopic rods are arranged equidistantly in a ring on the surface of the mounting plate. A connecting seat is fixedly installed at the outer end of each telescopic rod, and a contact wheel is rotatably connected above the connecting seat.

[0013] A threaded rod is fixedly connected to the surface of the mounting plate. A gear disc is sleeved on the outer wall of the threaded rod. A locking nut is fitted to the surface of the gear disc and threadedly connected to the outer wall of the threaded rod.

[0014] The gear disk has multiple adjustment slots equidistantly arranged inside, and the multiple adjustment slots are arranged corresponding to multiple telescopic rods. The inner walls of the multiple adjustment slots are slidably connected with sliding columns, and the sliding columns are fixedly installed on the surface of the telescopic rods.

[0015] Multiple adjustment slots are arranged in a radial arc-shaped structure on the surface of the gear disk.

[0016] The working principle of this invention is as follows: During use, the two adjusting seats on the surface are adjusted by rotating the bidirectional lead screw, thus supporting the bottom of the steel casing body. During welding, the support rollers above the moving block on one side of the first section of the steel casing body are installed to ensure the supporting rollers' rotation effect at the bottom of the steel casing body. After the first section of the steel casing body is moved to the appropriate position, one of the moving grinding units is set inside the first section of the steel casing body through the mounting plate. The rotation position of the gear disc on the surface of the mounting plate, under the action of the adjusting groove on the surface of the mounting plate, causes the adjusting groove to drive the telescopic rod to extend and retract. This allows the telescopic rod to drive the contact wheel to contact the inner wall of the first section of the steel casing, achieving the installation effect of the mobile grinding unit inside one side of the steel casing. After the mounting plate moves the adjusting groove to the appropriate position, the gear disc is fixed by the locking nut to ensure the positional stability of the gear disc. After one mobile grinding unit is fixed inside the first section of the steel casing, the other mobile grinding unit is installed by connecting it through the insert rod and insert cavity, ensuring the concentricity of the two mobile grinding units. Moreover, the connecting plate is installed on the surface of the insert rod through the threaded hole and mounting screw, so that the connecting frame drives the grinding wheel to position. Simultaneously, between the two mobile grinding units, the second steel casing body is rotated above the moving block on the other side, and the second steel casing body is fitted onto the outer wall of another mobile grinding unit. This allows the two mobile grinding units to be installed on the inner walls of the two steel casing bodies, achieving a connection between the two steel casing bodies via the inner grinding assembly. During welding, the first lead screw drives the adjusting plate downwards, causing the adjusting plate to move the welding gun above the joint of the steel casing bodies for welding. Simultaneously, the rotation of the two steel casing bodies driven by the support rollers causes the two mobile grinding units to move synchronously with the steel casings. The cylinder body rotates, causing the connecting frame to continuously grind the bottom inner wall of the steel casing body under the action of gravity. This improves the welding quality of the steel casing body after welding and ensures the internal flow of the steel casing body after welding. After the steel casing body is welded, the servo motor drives one of the bonding wheels to rotate, facilitating the bonding wheel to conform to and move along the inner wall of the steel casing body. This enables the internal grinding component to separate automatically after the steel casing body is welded, facilitating the separation of the modular internal grinding component and achieving the combined use effect of the device.

[0017] A connecting rod is fixedly connected between the two parallel support rollers, and the connecting rod is rotatably connected to the top of the adjusting seat, and the connecting rod is perpendicular to the bidirectional lead screw;

[0018] The movable block has a through hole inside that can accommodate the guide rod.

[0019] With the above structure, under the action of the connecting rod, the transmission between the gear column and the end face gear can realize the synchronous rotation of the two support rollers above the two connecting blocks, ensuring the synchronous rotation effect of the two steel casing bodies during welding, ensuring welding accuracy, and the structure is simple with good transmission effect. Moreover, by sliding the moving block on the outer wall of the guide rod, it is convenient for users to adjust the position of the support rollers according to welding requirements, ensuring that the support rollers meet the welding requirements of different steel casings and improving the user's convenience.

[0020] The output end of the drive motor is fixedly connected to a rotating rod, and the drive motor is fixedly installed on one side of the side plate;

[0021] The center of the support roller coincides with the center of the end face gear.

[0022] With the above structure, the rotation of the drive motor and the rotating rod allows the rotating rod to drive the gear column to rotate stably. Through the meshing connection between the gear column and the end face gear, the end face gear remains meshed on one side of the gear column when the adjusting seat moves the end face gear to any position, ensuring the transmission effect between the gear column and the end face gear. Moreover, the concentric setting of the end face gear and the support roller enables the drive of the end face gear and the support roller, which facilitates the support roller to drive the steel casing body on the surface to rotate at the bottom. This achieves the rotation effect of the steel casing body during welding and ensures the completeness of the welding of the steel casing body.

[0023] A handle is fixedly connected to the surface of the gear disk;

[0024] One of the connectors is fixedly connected to a servo motor on one side, and the output end of the servo motor is fixedly connected to a bonding wheel.

[0025] With the above structure, a handle is provided on the surface of the gear disk, which allows the user to rotate the gear disk. The locking nut ensures the gear disk is fixed after rotation. A servo motor is provided on one side of one of the connecting seats, which drives one of the bonding wheels to rotate. This facilitates the bonding wheel to conform to and move along the inner wall of the steel casing, enabling the internal grinding component to separate automatically after welding the steel casing and ensuring the working effect of the internal grinding component.

[0026] One of the mounting plates has a plug rod fixedly connected to its outer wall, and the other mounting plate has a cavity fixedly connected to its outer wall that can accommodate the plug rod.

[0027] The insert rod has a threaded hole running through it, and the cavity has a through hole corresponding to the threaded hole.

[0028] With the above structure, an elastic limiting piece is set at the front end of the insertion rod, and grooves are set on both sides of the insertion cavity to ensure the connection effect of the insertion rod inside the insertion cavity, which facilitates the precise installation of the two mobile grinding units and realizes the connection effect between the two steel casing bodies. Moreover, by setting the insertion rod and the through hole, the two symmetrically set mobile grinding units can install the connecting plate through the threaded hole after connection, which improves the connection flexibility of the mobile grinding units.

[0029] A connecting plate is installed on the surface of the insertion rod, and an installation screw is threaded inside the connecting plate. The installation screw is threaded into the inner wall of the threaded hole. A connecting frame is rotatably connected below the connecting plate, and a grinding wheel is rotatably connected to the bottom of the connecting frame. The grinding wheel is attached to the inner wall of the steel casing body.

[0030] By using the above structure, the connecting plate is connected to the surface of the insert rod. The bottom of the connecting plate rotates the seat of the connecting frame, which in turn drives the bottom grinding wheel to fit against the inner wall of the steel casing body. Furthermore, the fitting wheel drives the movable grinding unit installed between the two sections of the steel casing body. As the steel casing body rotates, the movable grinding unit rotates synchronously. This ensures that the connecting frame, under the action of gravity, continuously rotates and grinds the bottom inner wall of the steel casing body, which helps to improve the welding quality of the steel casing body after welding and ensures the internal flow of the steel casing body.

[0031] The limiting welding unit includes a slide rod, which is fixedly connected between two side frames. An adjusting block is slidably connected to the outer wall of the slide rod, and a first lead screw is rotatably connected to the top of the adjusting block. A top plate is rotatably installed on the top of the first lead screw, and the first lead screw is driven by a bidirectional motor.

[0032] An adjusting plate is connected to the outer wall of the first lead screw via a ball nut, and a welding gun is fixedly connected to the bottom end of the adjusting plate. The bottom end of the welding gun is attached to the top end of the joint of the steel casing body.

[0033] With the above structure, the setting of the limiting welding unit allows the first lead screw to drive the adjusting plate to adjust the height, which facilitates the adjusting plate to drive the welding gun at the bottom to weld the surface of the steel casing body connection seam. This ensures the accuracy of the welding gun's connection to the steel casing body connection seam. Moreover, by sliding the limiting welding unit on the surface of the slide rod, the limiting welding unit can accurately weld the two sections of the steel casing body between the two moving blocks.

[0034] Four limiting plates are rotatably connected to both sides of the adjusting plate, and the limiting plates on both sides are located on both sides of the connecting seam of the steel casing body.

[0035] The four limiting plates are rotatably connected by a rotating shaft, and the four limiting plates are arranged in a diamond shape.

[0036] A side rod is connected between the two limiting plates, and the side rod is located outside the first lead screw.

[0037] By adopting the above structure, four limiting plates are set on both sides of the adjusting plate. Under the action of the four limiting plates forming a diamond structure, when the adjusting plate drives the top rotating shaft to move downward, the four limiting plates stably limit the outer wall of the steel casing body. The limiting plates on both sides stably limit the connection seam of the steel casing body, thus avoiding the displacement of the steel casing body during welding and ensuring the welding accuracy and welding quality of the steel casing.

[0038] A bidirectional motor is fixedly connected to the top of the top plate, and a first lead screw is fixedly connected to the output end of the bidirectional motor.

[0039] The adjusting plate is internally slidably connected to a vertical rod, which is fixedly installed at the bottom end of the top plate and is parallel to the first lead screw.

[0040] With the above structure and the bidirectional motor, the first lead screw can be stably driven. Under the action of the upright and the first lead screw, the adjusting plate can be stably raised and lowered below the top plate, which facilitates the adjusting plate to drive the welding gun at the bottom to accurately weld the surface of the steel casing.

[0041] The movable block is internally rotatably connected to a two-way lead screw, and the outer wall of the two-way lead screw is connected to two adjusting seats through ball nuts. The bottom end of the adjusting seats is slidably connected to the inner wall of the movable block.

[0042] One end of the bidirectional lead screw is fixedly connected to an operating end, which is located on the outside of the moving block.

[0043] With the above structure, the bidirectional lead screw allows the user to rotate it externally via the operating end. This causes the two adjusting seats to move synchronously above the moving block, thus adjusting the distance between the two adjusting seats. This facilitates the two adjusting seats to drive the support rollers to limit and rotate steel casings of different diameters.

[0044] Compared with the prior art, the modular combined steel casing welding device of the present invention has the following advantages:

[0045] 1. In this invention, by moving the rotating support assembly on the surface of the side frame, the rotating support assembly can drive the two steel casing bodies to rotate synchronously on both sides, ensuring the rotational accuracy of the two steel casing bodies during welding. This facilitates precise welding of the steel casing bodies at both ends by the welding gun. Furthermore, by modularly setting the internal grinding assembly inside the steel casing body, the internal grinding assembly grinds the weld seam on the inner wall of the welded steel casing, ensuring the welding effect of the steel casing. Moreover, by setting the limiting welding unit on the outside of the steel casing, the steel casing is synchronously limited externally during welding. Through this setting, the modular combination of the device can be flexibly installed, facilitating precise welding of the two steel casing bodies, avoiding misalignment, and ensuring welding quality.

[0046] 2. In this invention, by setting the internal grinding component, and with the adjustment grooves on the surface of the mounting plate arranged radially, the adjustment grooves drive the telescopic rod to extend and retract, which in turn drives the contact wheel to contact the inner wall of the first section of the steel casing body. This achieves the installation of the mobile grinding unit inside steel casing bodies with inner walls of different diameters. Furthermore, by fixing the gear disc with a locking nut, the positional stability of the gear disc is ensured, and the internal grinding component connects the two steel casing bodies. At the same time, under the installation of the connecting plate, the connecting frame drives the grinding wheel to be located between the two mobile grinding units, so that the grinding wheel always grinds the bottom inner wall of the steel casing body under the action of gravity, achieving the welding and grinding effect when the steel casing body rotates.

[0047] 3. In this invention, the detachable connection between the two mobile grinding units allows them to be installed on the inner walls of the two steel casing bodies respectively. By fixing the two mobile grinding units together, a connection effect is achieved when the two steel casing bodies are welded together, ensuring the precision of the welding joint of the steel casing. Furthermore, through the driving connection of one of the bonding wheels, the bonding wheel can drive the inner grinding component to move on the inner wall of the steel casing after welding. This facilitates the movement and disassembly of the inner grinding component on the inner wall of the welded steel casing, ensuring the reusability of the inner grinding component and its separation from the steel casing, thus realizing the combined use of the device.

[0048] 4. In this invention, by setting the limiting welding unit, the first lead screw can drive the adjusting plate to adjust the height, which facilitates the adjusting plate to drive the bottom welding gun to weld the surface of the steel casing body connection seam. This ensures the connection accuracy of the welding gun to the steel casing body connection seam and guarantees the welding effect of the welding gun. At the same time, by sliding the limiting welding unit on the surface of the sliding rod, the limiting welding unit can accurately weld the two sections of the steel casing body between the two moving blocks. Attached Figure Description

[0049] Figure 1 This is a structural schematic diagram of a modular combined steel casing welding device according to the present invention;

[0050] Figure 2 This is a schematic diagram of the structure of the rotating component in this invention;

[0051] Figure 3 In this invention Figure 2 Enlarged structural diagram at point A

[0052] Figure 4 This is a cross-sectional structural diagram of the movable block in this invention;

[0053] Figure 5 This is a front view structural schematic diagram of a modular combined steel casing welding device according to the present invention;

[0054] Figure 6 This is a schematic diagram of the connection structure of the two movable grinding units in this invention;

[0055] Figure 7 This is a side view of the internal grinding component in this invention.

[0056] Figure 8 This is a schematic diagram of the movable polishing unit structure in this invention;

[0057] Figure 9 This is a schematic diagram of the connecting plate and connecting frame in this invention;

[0058] Figure 10 This is a side view of a modular combined steel casing welding device according to the present invention.

[0059] In the diagram, 1. Side frame; 2. Guide rod; 3. Moving block; 4. Adjusting seat; 5. Support roller; 6. Side plate; 7. Rotating rod; 8. Gear column; 9. Drive motor; 10. End face gear; 11. Double-acting lead screw; 12. Operating end; 13. Through hole; 14. Connecting rod; 15. Steel casing body; 16. Mounting plate; 17. Telescopic rod; 18. Connecting seat; 19. Fitting wheel; 20. Gear disk; 21. Adjusting groove; 2. Sliding column; 23. Threaded rod; 24. Locking nut; 25. Handle; 26. Servo motor; 27. Insert rod; 28. Threaded hole; 29. ​​Connecting plate; 30. Mounting screw; 31. Connecting bracket; 32. Grinding wheel; 33. Sliding rod; 34. Adjusting block; 35. First lead screw; 36. Top plate; 37. Adjusting plate; 38. Welding gun; 39. Limiting plate; 40. Rotating shaft; 41. Side rod; 42. Bidirectional motor. Detailed Implementation

[0060] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0061] like Figures 1-10 As shown, a modular combined steel casing welding device includes a side frame 1, a guide rod 2, a moving block 3, an adjusting seat 4, a support roller 5, a side plate 6, a rotating rod 7, a gear column 8, a drive motor 9, an end face gear 10, a double-acting screw 11, an operating end 12, a through hole 13, a connecting rod 14, a steel casing body 15, a mounting plate 16, a telescopic rod 17, a connecting seat 18, a contact wheel 19, a gear disc 20, an adjusting groove 21, a sliding column 22, a threaded rod 23, a locking nut 24, a handle 25, a servo motor 26, an insertion rod 27, a threaded hole 28, a connecting plate 29, a mounting screw 30, a connecting frame 31, a grinding wheel 32, a sliding rod 33, an adjusting block 34, and a first screw 35. The components include a top plate 36, an adjusting plate 37, a welding gun 38, a limiting plate 39, a rotating shaft 40, side rods 41, and a bidirectional motor 42. A guide rod 2 is fixedly connected between the two side frames 1, and a support assembly is slidably connected to the outer wall of the guide rod 2. The support assembly includes two moving blocks 3, which are slidably connected in parallel to the outer wall of the guide rod 2. The moving blocks 3 have through holes 13 that can accommodate the guide rod 2. Sliding the moving blocks 3 on the outer wall of the guide rod 2 allows the user to adjust the position of the support rollers 5 according to welding requirements, ensuring that the support rollers 5 meet the welding needs of different steel casings and improving user convenience. Simultaneously, two adjusting... Specifically, the movable block 3 has a rotatably connected bidirectional lead screw 11 inside seat 4. Two adjusting seats 4 are connected to the outer wall of the bidirectional lead screw 11 via ball nuts. The bottom end of each adjusting seat 4 is slidably connected to the inner wall of the movable block 3. For convenient operation of the bidirectional lead screw 11, an operating end 12 is fixedly connected to one end of the bidirectional lead screw 11. The operating end 12 is located outside the movable block 3. This configuration allows the user to rotate the bidirectional lead screw 11 externally via the operating end 12, thus driving the two adjusting seats 4 to move synchronously above the movable block 3. This achieves distance adjustment between the two adjusting seats 4, facilitating the movement of the two adjusting seats 4. The support rollers 5 limit the rotation of steel casing bodies 15 of different diameters. At the same time, in order to achieve the rotation of the steel casing bodies 15, support rollers 5 are rotatably connected to the top of the adjusting seat 4. A connecting rod 14 is fixedly connected between two parallel support rollers 5, and the connecting rod 14 is rotatably connected to the top of the adjusting seat 4. The connecting rod 14 is perpendicular to the double-acting screw 11. Under the action of the connecting rod 14, the transmission between the gear column 8 and the end face gear 10 can realize the synchronous rotation of the two support rollers 5 above the two moving blocks 3, ensuring the synchronous rotation effect of the two sections of steel casing bodies 15 during welding, ensuring welding accuracy, and the structure is simple and the transmission effect is good.

[0062] One of the movable blocks 3 has a side plate 6 fixedly connected to its outer side, and a rotating rod 7 is rotatably connected to one side of the side plate 6. The rotating rod 7 is driven by a drive motor 9. Specifically, the output end of the drive motor 9 is fixedly connected to the rotating rod 7, and the drive motor 9 is fixedly installed on one side of the side plate 6. At the same time, a gear column 8 is fixedly connected to the outer wall of the rotating rod 7. Two end face gears 10 are meshed on the surface of the gear column 8, and the two end face gears 10 are correspondingly arranged on one side of the two support rollers 5. Under the rotation action of the drive motor 9 and the rotating rod 7, the rotating rod 7 can drive the gear column 8 to rotate stably. Through the meshing connection between the gear column 8 and the end face gears 10, when the adjusting seat 4 drives the end face gears 10 to move to any position, the end face gears... The wheel 10 is engaged on one side of the gear column 8 to ensure the transmission effect between the gear column 8 and the end face gear 10. The center of the support wheel 5 coincides with that of the end face gear 10. Through the concentric setting of the end face gear 10 and the support wheel 5, the end face gear 10 and the support wheel 5 are driven, which makes it easy for the support wheel 5 to drive the steel casing body 15 on the bottom to rotate. This achieves the rotation effect of the steel casing body 15 during welding and ensures the completeness of the welding of the steel casing body 15. The steel casing body 15 is closely connected between the two support wheels 5, and the two steel casing bodies 15 are respectively located above the two moving blocks 3. The connection seam of the steel casing body 15 is located between the two moving blocks 3 to ensure the accuracy of the docking between the two steel casing bodies 15.

[0063] Furthermore, an internal grinding assembly is connected inside the steel casing body 15. The internal grinding assembly includes two symmetrically arranged movable grinding units, which are detachably connected. Each movable grinding unit includes a mounting plate 16, which is movably installed inside the steel casing body 15. Multiple telescopic rods 17 are slidably connected to the surface of the mounting plate 16. The multiple telescopic rods 17 are equidistantly arranged in a ring on the surface of the mounting plate 16. A connecting seat 18 is fixedly installed at the outer end of the telescopic rod 17. A contact wheel 19 is rotatably connected above the connecting seat 18. A servo motor 26 is fixedly connected to one side of one of the connecting seats 18, and the output end of the servo motor 26 is fixedly connected to the contact wheel 19. By setting the servo motor 26 on one side of one of the connecting seats 18, the servo motor 26 can drive one of the contact wheels 19 to rotate, which facilitates the contact wheel 19 to move and contact the inner wall of the steel casing body 15. This realizes the self-separation of the internal grinding assembly after the steel casing body 15 is welded, ensuring the working effect of the internal grinding assembly.

[0064] A threaded rod 23 is fixedly connected to the surface of the mounting plate 16. A gear disk 20 is sleeved on the outer wall of the threaded rod 23. A handle 25 is fixedly connected to the surface of the gear disk 20. The handle 25 on the surface of the gear disk 20 facilitates the user to rotate the gear disk 20. At the same time, a locking nut 24 is attached to the surface of the gear disk 20. The locking nut 24 is threaded to the outer wall of the threaded rod 23. Under the action of the locking nut 24, the gear disk 20 is fixed after rotation. In order to achieve the synchronous extension and retraction of multiple telescopic rods 17, multiple adjustment slots 21 are equally spaced inside the gear disk 20. The multiple adjustment slots 21 are corresponding to the multiple telescopic rods 17. Specifically, the multiple adjustment slots 21 are arranged in a radial arc structure on the surface of the gear disk 20. The inner wall of each adjustment slot 21 is slidably connected to a sliding column 22, and the sliding column 22 is fixedly installed on the surface of the telescopic rod 17.

[0065] Furthermore, one of the mounting plates 16 has a rod 27 fixedly connected to its outer wall, and the other mounting plate 16 has a cavity fixedly connected to its outer wall to accommodate the rod 27. A threaded hole 28 is provided through the rod 27, and a through hole is provided corresponding to the threaded hole 28 inside the cavity. An elastic limiting piece is provided at the front end of the rod 27, and grooves are provided on both sides of the cavity to ensure the connection effect of the rod 27 inside the cavity. This facilitates precise installation of the two mobile grinding units and achieves a connection effect between the two steel casing bodies 15. Moreover, the rod 27 and the through hole allow the two symmetrically arranged mobile grinding units to install the connecting plate 29 through the threaded hole 28 after connection, improving the connection flexibility of the mobile grinding units. A connecting plate 29 is installed on the surface of the rod 27, and a mounting screw 30 is threadedly connected inside the connecting plate 29. The threaded connection is to the inner wall of the threaded hole 28. A connecting frame 31 is rotatably connected to the bottom of the connecting plate 29. A grinding wheel 32 is rotatably connected to the bottom of the connecting frame 31. The grinding wheel 32 is attached to the inner wall of the steel casing body 15. With this arrangement, when the connecting plate 29 is connected to the surface of the insert rod 27, the bottom of the connecting plate 29 rotates the seat of the connecting frame 31. This causes the connecting frame 31 to drive the grinding wheel 32 at the bottom to adhere to the inner wall of the steel casing body 15. Moreover, the moving grinding unit is installed between the two sections of the steel casing body 15 by the adhering wheel 19. When the steel casing body 15 rotates, it synchronously drives the moving grinding unit to rotate. This allows the connecting frame 31 to rotate and grind the bottom inner wall of the steel casing body 15 under the action of gravity. This is beneficial to improving the welding quality of the steel casing body 15 after welding and ensuring the internal flow of the steel casing body 15.

[0066] Furthermore, a limiting welding unit is provided on the outer side of the steel casing body 15, and the limiting welding unit is located between two moving blocks 3. Specifically, the limiting welding unit includes a sliding rod 33, which is fixedly connected between the two side frames 1. An adjusting block 34 is slidably connected to the outer wall of the sliding rod 33, and a first lead screw 35 is rotatably connected to the top of the adjusting block 34. A top plate 36 is rotatably mounted on the top of the first lead screw 35, and the first lead screw 35 is driven by a bidirectional motor 42. The top of the top plate 36 is fixedly connected to the bidirectional motor 42, and the output end of the bidirectional motor 42 is fixedly connected to the first lead screw 35. The outer wall of the first lead screw 35 is connected to an adjusting block 34 by a ball nut. To ensure the smooth movement of the adjustment plate 37, a vertical rod is slidably connected inside the adjustment plate 37. The vertical rod is fixedly installed at the bottom end of the top plate 36 and is parallel to the first lead screw 35. A welding gun 38 is fixedly connected to the bottom end of the adjustment plate 37. The bottom end of the welding gun 38 is attached to the top end of the joint of the steel casing body 15. With the bidirectional motor 42, the first lead screw 35 can be stably driven. Under the action of the vertical rod and the first lead screw 35, the adjustment plate 37 can be stably raised and lowered below the top plate 36, which facilitates the adjustment plate 37 to drive the welding gun 38 at the bottom to accurately weld the surface of the steel casing body 15.

[0067] Four limiting plates 39 are rotatably connected to both sides of the adjusting plate 37. The limiting plates 39 on both sides are located on both sides of the connecting seam of the steel casing body 15. The four limiting plates 39 are rotatably connected by a rotating shaft 40 and are arranged in a rhomboid structure. A side rod 41 is connected between the two limiting plates 39 and is located outside the first lead screw 35. Under the action of the rhomboid structure of the four limiting plates 39, when the adjusting plate 37 drives the rotating shaft 40 at the top to move downward, the four limiting plates 39 are stably limited on the outer wall of the steel casing body 15. The limiting plates 39 on both sides are stably limited on both sides of the connecting seam of the steel casing body 15, which avoids the steel casing body 15 from shifting during welding and ensures the welding accuracy and welding quality of the steel casing body 15.

[0068] The working principle of this invention is as follows: During use, the two adjusting seats 4 on the surface are adjusted by rotating the bidirectional lead screw 11, thus supporting the bottom of the steel casing body 15. During welding, the support roller 5 above the moving block 3 on one side of the first section of the steel casing body 15 is installed to ensure the supporting effect of the support roller 5 at the bottom of the steel casing body 15. After the first section of the steel casing body 15 is moved to the appropriate position, one of the moving grinding units is set inside the first section of the steel casing body 15 through the mounting plate 16. The rotation position of the gear disk 20 on the surface of the mounting plate 16 is adjusted by the adjustment groove 21 on the surface of the mounting plate 16, which drives the telescopic rod 17 to extend and retract, thus extending and retracting. Rod 17 drives the contact wheel 19 to contact the inner wall of the first section of the steel casing 15, achieving the installation effect of the mobile grinding unit inside one side of the steel casing 15. After the mounting plate 16 moves the adjusting groove 21 to the appropriate position, the gear disk 20 is fixed by the locking nut 24 to ensure the positional stability of the gear disk 20. After one of the mobile grinding units is fixed inside the first section of the steel casing 15, the other mobile grinding unit is installed by connecting rod 27 and insert cavity, ensuring the concentricity of the two mobile grinding units. Moreover, the connecting plate 29 is installed on the surface of the insert rod 27 through the threaded hole 28 and the mounting screw 30, so that the connecting frame 31 drives the grinding wheel 32 to be positioned between the two mobile grinding units. Simultaneously, between the grinding units, the second steel casing body 15 is rotated above the moving block 3 on the other side, and the second steel casing body 15 is fitted onto the outer wall of another moving grinding unit, so that the two moving grinding units are respectively installed on the inner walls of the two steel casing bodies 15, realizing the connection between the two steel casing bodies 15 by the inner grinding assembly. During welding, the first lead screw 35 drives the adjusting plate 37 to move downward, so that the adjusting plate 37 drives the welding gun 38 to weld above the joint of the steel casing body 15. At the same time, under the effect of the support roller 5 driving the rotation of the two steel casing bodies 15, the two moving grinding units rotate synchronously with the steel casing bodies 15, so that the connecting frame 3 1. Under the action of gravity, the bottom inner wall of the steel casing body 15 is rotated and ground downwards, which is beneficial to improving the welding quality of the steel casing body 15 after welding and ensuring the internal flow of the steel casing body 15 after welding. After the steel casing body 15 is welded, the servo motor 26 is set so that the servo motor 26 can drive one of the bonding wheels 19 to rotate, which facilitates the bonding wheel 19 to conform and move on the inner wall of the steel casing body 15. This realizes the self-separation of the inner grinding component after the steel casing body 15 is welded, which facilitates the separation of the modular inner grinding component and realizes the combined use effect of the device. This completes the working principle of the modular combined steel casing welding device.

[0069] In summary, in this invention, by moving the rotating assembly on the surface of the side frame 1, the rotating assembly can drive the two steel casing bodies 15 to rotate synchronously on both sides, ensuring the rotational accuracy of the two steel casing bodies 15 during welding. This facilitates the welding gun 38 to accurately weld the steel casing bodies 15 joined at both ends. Furthermore, by modularly setting an internal grinding assembly inside the steel casing body 15, the internal grinding assembly grinds the weld seam on the inner wall of the welded steel casing, ensuring the welding effect of the steel casing. Moreover, by setting a limiting welding unit on the outside of the steel casing, the steel casing is synchronously limited externally during welding. Through this setting, the modular combination of the device is flexibly installed, facilitating the precise welding of the two steel casings, avoiding misalignment, ensuring welding quality, and solving the technical problems of poor accuracy during butt welding of existing steel casing welding devices and poor welding quality of the inner wall of the steel casing after welding.

[0070] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A modular combined steel casing welding device, comprising two side frames (1), characterized in that, A guide rod (2) is fixedly connected between the two side frames (1), and a rotating support assembly is slidably connected to the outer wall of the guide rod (2). The rotating support assembly includes two moving blocks (3), and the two moving blocks (3) are slidably connected to the outer wall of the guide rod (2). Two adjusting seats (4) are slidably connected to the surface of the moving blocks (3), and the top of each adjusting seat (4) is rotatably connected to a support roller (5). One of the movable blocks (3) has a side plate (6) fixedly connected to its outer side, and a rotating rod (7) is rotatably connected to one side of the side plate (6). The rotating rod (7) is driven by a drive motor (9). A gear column (8) is fixedly connected to the outer wall of the rotating rod (7). Two end face gears (10) are meshed on the surface of the gear column (8), and the two end face gears (10) are correspondingly set on one side of the two support rollers (5). A steel casing body (15) is attached between the two support rollers (5), and the two steel casing bodies (15) are respectively located above the two moving blocks (3), with the joint of the steel casing body (15) located between the two moving blocks (3); The steel casing body (15) is internally connected to an internal grinding assembly, and a limiting welding unit is provided on the outside of the steel casing body (15), and the limiting welding unit is located between two moving blocks (3). The internal polishing assembly includes two symmetrically arranged movable polishing units, and the two movable polishing units are detachably connected. The mobile grinding unit includes a mounting plate (16), which is movably installed inside the steel casing body (15). Multiple telescopic rods (17) are slidably connected to the surface of the mounting plate (16). The multiple telescopic rods (17) are arranged equidistantly in a ring on the surface of the mounting plate (16). A connecting seat (18) is fixedly installed at the outer end of the telescopic rod (17). A fitting wheel (19) is rotatably connected above the connecting seat (18). A threaded rod (23) is fixedly connected to the surface of the mounting plate (16). A gear disk (20) is sleeved on the outer wall of the threaded rod (23). A locking nut (24) is attached to the surface of the gear disk (20). The locking nut (24) is threadedly connected to the outer wall of the threaded rod (23). The gear disk (20) has multiple adjustment slots (21) equidistantly arranged inside, and the multiple adjustment slots (21) are arranged corresponding to the multiple telescopic rods (17). The inner walls of the multiple adjustment slots (21) are all slidably connected with sliding columns (22), and the sliding columns (22) are fixedly installed on the surface of the telescopic rods (17). Multiple adjustment grooves (21) are arranged in a radial arc structure on the surface of the gear disk (20).

2. The modular combined steel casing welding device according to claim 1, characterized in that, A connecting rod (14) is fixedly connected between two parallel rollers (5), and the connecting rod (14) is rotatably connected to the top of the adjusting seat (4), and the connecting rod (14) is perpendicular to the double-acting screw (11); The movable block (3) has a through hole (13) inside that can accommodate the guide rod (2).

3. The modular combined steel casing welding device according to claim 1, characterized in that, The output end of the drive motor (9) is fixedly connected to the rotating rod (7), and the drive motor (9) is fixedly installed on one side of the side plate (6); The center of the support roller (5) coincides with the center of the end face gear (10).

4. The modular combined steel casing welding device according to claim 1, characterized in that, A handle (25) is fixedly connected to the surface of the gear disk (20); One of the connectors (18) is fixedly connected to a servo motor (26) on one side, and the output end of the servo motor (26) is fixedly connected to a bonding wheel (19).

5. The modular combined steel casing welding device according to claim 1, characterized in that, One of the mounting plates (16) has a plug rod (27) fixedly connected to its outer wall, and the other mounting plate (16) has a plug cavity fixedly connected to its outer wall to accommodate the plug rod (27); The insert rod (27) has a threaded hole (28) inside, and the insert cavity has a through hole corresponding to the threaded hole (28).

6. The modular combined steel casing welding device according to claim 5, characterized in that, A connecting plate (29) is installed on the surface of the insertion rod (27). The connecting plate (29) is internally threaded with a mounting screw (30), and the mounting screw (30) is threaded into the inner wall of the threaded hole (28). A connecting frame (31) is rotatably connected below the connecting plate (29). A grinding wheel (32) is rotatably connected to the bottom of the connecting frame (31). The grinding wheel (32) is attached to the inner wall of the steel casing body (15).

7. The modular combined steel casing welding device according to claim 1, characterized in that, The limiting welding unit includes a slide rod (33), which is fixedly connected between two side frames (1). An adjusting block (34) is slidably connected to the outer wall of the slide rod (33), and a first lead screw (35) is rotatably connected to the top of the adjusting block (34). A top plate (36) is rotatably installed on the top of the first lead screw (35), and the first lead screw (35) is driven by a bidirectional motor (42). The outer wall of the first lead screw (35) is connected to an adjusting plate (37) by a ball nut, and a welding gun (38) is fixedly connected to the bottom end of the adjusting plate (37). The bottom end of the welding gun (38) is attached to the top of the joint of the steel casing body (15).

8. The modular combined steel casing welding device according to claim 7, characterized in that, The adjusting plate (37) is rotatably connected to four limiting plates (39) on both sides, and the limiting plates (39) on both sides are located on both sides of the connecting seam of the steel casing body (15). The four limiting plates (39) are rotatably connected by a rotating shaft (40), and the four limiting plates (39) are arranged in a rhomboid structure; A side rod (41) is connected between the two limiting plates (39), and the side rod (41) is located outside the first lead screw (35).

9. A modular combined steel casing welding device according to claim 7, characterized in that, The top of the top plate (36) is fixedly connected to a bidirectional motor (42), and the output end of the bidirectional motor (42) is fixedly connected to a first lead screw (35). The adjusting plate (37) has a sliding connection to a vertical rod inside. The vertical rod is fixedly installed at the bottom end of the top plate (36) and is arranged parallel to the first lead screw (35).

10. A modular combined steel casing welding device according to claim 1, characterized in that, The movable block (3) is internally rotatably connected to a two-way lead screw (11), and the outer wall of the two-way lead screw (11) is connected to two adjusting seats (4) through ball nuts. The bottom end of the adjusting seat (4) is slidably connected to the inner wall of the movable block (3). One end of the bidirectional lead screw (11) is fixedly connected to an operating end (12), which is located outside the moving block (3).

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