A converter gasification flue repair welding device

Abstract

This invention relates to the field of flue welding technology and discloses a welding device for repairing converter gasification flue. The device includes a welding table, a support plate fixedly connected above the welding table, and clamping seats symmetrically fixedly connected above the support plate. A first guard plate is fixedly connected to one side of the upper clamping seat, and a second guard plate is rotatably connected to the other side of the upper clamping seat. Conical clamps are provided on both sides of the first and second guard plates. A dual-drive assembly is provided below the conical clamps, capable of driving the two conical clamps to move relative to each other and rotate. Driving the two conical clamps to move relative to each other causes their conical arc surfaces to insert into the inner walls of the two sections of flue to be repaired, pushing the flue towards the center and precisely aligning it with the two sides of the new pipe section. After initial spot welding and fixing, the conical clamps are driven to rotate. The friction between the clamps and the inner wall of the flue drives the entire assembly to rotate, enabling continuous welding along a circular weld. This achieves rapid and precise positioning and alignment of the two flue sections with the new pipe section, ensuring weld quality.

Description

Technical Field

[0001] This invention belongs to the field of flue welding technology, specifically relating to a converter gasification flue repair welding device. Background Technology

[0002] The converter gasification flue is a high-efficiency cooling and waste heat recovery pipeline above the steelmaking converter. It removes the high-temperature flue gas generated during the steelmaking process and uses circulating water in the flue to absorb the heat of the flue gas to generate steam. This effectively cools and protects the flue body while also realizing the recovery and utilization of waste heat. It is a key piece of equipment in the converter steelmaking system.

[0003] The converter gasification flue repair welding device is a complete set of equipment that disassembles the damaged flue and fixes it on a special welding table for repair. It includes a flue support and positioning mechanism, a welding operation platform and a welding system. It can perform surfacing or repair welding on the flue pipe wall in a stable and controllable bench environment to restore its structural strength and sealing performance.

[0004] In practical use, if a section of the converter gasification flue is damaged or leaks, the entire flue needs to be disassembled from above the converter. Then, the broken section of the flue is removed, while the rest of the intact flue structure is preserved. The new pipe section is then welded to the two ends of the flue that were removed to complete the repair of the entire flue. During the welding repair work, the new pipe section is hoisted and assembled, and the gap and alignment accuracy are adjusted. Then, multi-layer, multi-pass symmetrical welding is carried out, the interpass temperature is controlled, and finally, non-destructive testing and pressure testing are performed.

[0005] The new pipe section needs to meet high coaxiality requirements and uniform butt gaps with the old flues at both ends to ensure the quality of subsequent welding. Traditional repair methods mainly rely on manual assembly: operators use lifting equipment to transport the new pipe section between the two old flue sections, and repeatedly adjust the position of the pipe section by visual inspection, caliper measurement and experience. Because the converter gasification flue pipe diameter is large, it is very easy to have problems such as misalignment, uneven gaps or axial deviation, resulting in defects such as incomplete fusion, weld beads or insufficient weld strength after welding, which seriously affects the sealing performance and pressure resistance after repair.

[0006] Therefore, the present invention provides a welding device for repairing converter vaporization flue. Summary of the Invention

[0007] To overcome the shortcomings of the prior art: to solve at least one technical problem raised in the background art.

[0008] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a welding device for repairing converter gasification flue, including a welding table, a support plate fixedly connected above the welding table, clamping seats symmetrically fixedly connected above the support plate, a first guard plate fixedly connected to one side above the clamping seats, and a second guard plate rotatably connected to the other side above the clamping seats. Conical clamps are provided on both sides of the first and second guard plates. A dual-drive assembly is provided below the conical clamps, which can drive the two conical clamps to move relative to each other and rotate on their own. Two sets of spot welding mechanisms are fixedly installed above the support plate. A support assembly is provided on the outer side of the second guard plate. The support assembly includes multiple support balls that can move downwards simultaneously. The outer walls of the support balls are all in contact with the outer side of the second guard plate. A feeding assembly is provided on one side of the first guard plate, which allows new pipe sections to be fed between the first and second guard plates. A sliding table is fixedly connected to the surface of the welding table.

[0009] Preferably, the dual-drive assembly includes a limiting slide, which is fixedly installed above the welding table. A motor is fixedly installed on one side of the limiting slide, and the output shaft of the motor is fixedly connected to a bidirectional screw. The bidirectional screw is rotatably connected to the inner wall of the limiting slide. Both ends of the bidirectional screw are threadedly connected to internally threaded sliders. The internally threaded sliders are slidably connected to and adapted to the inner wall of the limiting slide. The top of each internally threaded slider is fixedly connected to a connector, and one end of the conical clamp is rotatably connected to the inner wall of the connector.

[0010] Preferably, a second motor is fixedly installed on one side of the connector, and a transmission gear is fixedly connected to the output shaft of the second motor and one side of the conical clamp, with the teeth of the two transmission gears meshing with each other.

[0011] Preferably, the support assembly includes a shock-absorbing bracket, multiple support rods of the shock-absorbing bracket are fixedly connected to the bottom of the support ball, the support rods of the shock-absorbing bracket are all inserted into the inner wall of the support plate, a guide slide is fixedly connected to the bottom of the shock-absorbing bracket, a guide groove is opened on the inner wall of the guide slide, and a slide rod is slidably connected to the inner wall of the guide groove.

[0012] Preferably, the support assembly further includes a hydraulic rod, which is fixedly installed above the bracket plate. The output end of the hydraulic rod is fixedly connected to a connecting frame. Both ends of the slide rod are fixedly connected to side sliders. Limiting rods are symmetrically fixedly connected to the sides of the bracket plate. The side sliders are slidably connected to the outer walls of the limiting rods. The connecting frame is fixedly connected to the sides of the two side sliders.

[0013] Preferably, a base support frame is fixedly connected to one side of the welding table, a material preparation slide is fixedly connected above the base support frame, the material preparation slide is fixedly connected to the center of one side of the guard plate, a bearing seat is fixedly connected to the outside of the material preparation slide, and a baffle plate is fixedly connected to the outer wall of the shaft of the bearing seat.

[0014] Preferably, the feeding assembly includes two limiting rods, which are fixedly connected to the sides of the bottom support frame. Each limiting rod has a sliding plate frame slidably connected to its outer wall, and a rack is fixedly connected to the top of each sliding plate frame. Gears are fixedly connected to both ends of the shaft of the bearing seat, and the teeth of the rack can mesh with the teeth of the gears. A pushing component is provided at the hydraulic rod to drive the sliding plate frame to move laterally along the surface of the limiting rod.

[0015] Preferably, the pushing assembly includes a notch plate, which is fixedly connected to the bottom of two slide frames, and a telescopic rod is fixedly connected above the output end of the hydraulic rod, with a push ball fixedly connected to the top of the telescopic rod.

[0016] Preferably, a plug plate is fixedly connected to the inner side of the bottom support frame, a plug rod is inserted into the inner wall of the plug plate, a limit block is fixedly connected to the top of the plug rod, a wedge block one is fixedly connected to the bottom of the plug rod, and a wedge block two is fixedly connected to the top of the slide frame, with the wedge block one and the wedge block two fitting together.

[0017] Preferably, a spring is fixedly connected between one side of the skateboard frame and one end of the limiting rod, and a spring is provided on the outside of the plug-in rod. The two ends of the spring are fixedly connected to the bottom of the limiting block and the top of the plug-in plate, respectively.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The converter gasification flue repair welding device of the present invention uses a dual-drive assembly to drive two conical clamps to move relative to each other, so that their conical arc surfaces are inserted into the inner walls of the two flue sections to be repaired. Utilizing the self-centering property of the conical surfaces, the flue is pushed towards the center, so that it is precisely aligned and joined with the two sides of the new pipe section. After initial fixation by spot welding, the conical clamps are driven to rotate. The friction between the clamps and the inner wall of the flue drives the entire assembly to rotate, so as to perform continuous welding along the circular weld. This achieves rapid and accurate positioning and alignment of the two flue sections and the new pipe section, ensuring the quality of the weld.

[0020] 2. The converter gasification flue repair and welding device of the present invention uses a support assembly to support multiple support balls from below against the outer side of the second protective plate, so that the second protective plate and the first protective plate form a stable V-shaped groove for placing the flue and new pipe section and preventing rolling. After welding is completed, the support balls move downward, and the second protective plate always adheres to the top of the support balls under the action of the flue's gravity and rotates downward with them, finally docking with the sliding table to form a slope, so that the welded flue can automatically slide out, realizing automatic material unloading.

[0021] 3. The converter gasification flue repair and welding device of the present invention, through the material replenishment component, releases a new pipe section that has been placed in advance at the material preparation point when the support ball is reset, and makes it slide accurately to the center position between the first and second guard plates. This ensures that after each V-groove reset, the center position is automatically replenished with a new pipe section, which is ready for the next round of welding, significantly shortens the auxiliary operation time, and improves the continuity and efficiency of batch repair. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a perspective view of the entire invention;

[0024] Figure 2 This is a schematic diagram of the conical clamp structure in this invention;

[0025] Figure 3 This is a schematic diagram of the structure of the protective plate in this invention;

[0026] Figure 4 This is a schematic diagram of the hydraulic rod structure in this invention;

[0027] Figure 5 This is a schematic diagram of the structure at the supporting ball in this invention;

[0028] Figure 6 This is a schematic diagram of the structure of the guide slide in this invention;

[0029] Figure 7 This is a schematic diagram of the material preparation slide in this invention;

[0030] Figure 8 This is a schematic diagram of the structure at the limiting block in this invention;

[0031] Figure 9 This is a schematic diagram of the structure of the skateboard frame in this invention;

[0032] Figure 10 This is a schematic diagram of the structure at the notch plate in this invention.

[0033] In the diagram: 1. Welding table; 2. Support plate; 3. Clamping seat; 4. Guard plate one; 5. Guard plate two; 6. Conical clamp; 7. Spot welding mechanism; 8. Support ball; 9. Sliding table; 10. Limiting slide; 11. Bidirectional screw; 12. Internal threaded slider; 13. Motor one; 14. Connector; 15. Motor two; 16. Transmission gear; 17. Vibration damping bracket; 18. Guide slide; 19. Sliding rod; 20. Guide groove; 21. Side slider 22. Limiting rod one; 23. Connecting frame; 24. Hydraulic rod; 25. Material preparation slide; 26. Blocking plate; 27. Bearing seat; 28. Gear; 29. ​​Slide frame; 30. Limiting rod two; 31. Rack; 32. Notch plate; 33. Telescopic rod; 34. Push ball; 35. Plug plate; 36. Limiting block; 37. Plug rod; 38. Wedge block one; 39. Wedge block two; 40. Spring one; 41. Spring two; 42. Base support frame. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] like Figures 1 to 10 As shown, the present invention provides a technical solution: a welding device for repairing converter gasification flue, including a welding table 1, a support plate 2 fixedly connected above the welding table 1, a clamping seat 3 symmetrically fixedly connected above the support plate 2, a first guard plate 4 fixedly connected to one side above the clamping seat 3, and a second guard plate 5 rotatably connected to the other side above the clamping seat 3. Conical clamps 6 are provided on both sides of the first guard plate 4 and the second guard plate 5. A dual-drive assembly is provided below the conical clamps 6, which can drive the two conical clamps 6 to move relative to each other and rotate on their own. Two sets of spot welding mechanisms 7 are fixedly installed above the support plate 2. A support assembly is provided on the outer side of the second guard plate 5. The support assembly includes multiple support balls 8 that can move downwards simultaneously. The outer walls of the support balls 8 are all in contact with the outer side of the second guard plate 5. A feeding assembly is provided on one side of the first guard plate 4, which can feed new pipe sections between the first guard plate 4 and the second guard plate 5. A sliding table 9 is fixedly connected to the surface of the welding table 1.

[0036] During operation: In the initial state, the outer side of the second protective plate 5, supported by multiple support balls 8, forms a V-shape with the first protective plate 4. The V-shaped groove formed by the first protective plate 4 and the second protective plate 5 can stably hold the two flue sections to be repaired and welded. The new pipe section used to repair the two flue sections is placed at the center of the V-shaped groove, and the two flue sections to be repaired are located on both sides of the new pipe section. Then, the dual-drive assembly is activated, driving the two conical clamps 6 to move closer to each other. During the movement, the conical arc surface of the conical clamps 6 gradually approaches and inserts into the inner wall of the two flue sections respectively. A thrust is applied to align one side of each of the two flue sections with the two sides of the new pipe section, thus precisely aligning the two weld seams and positioning them directly below the two spot welding mechanisms 7. The spot welding mechanisms 7 then perform spot welding, forming weld points at the weld seams between the two flue sections and the new pipe section, thus establishing a preliminary and stable connection between the flue and the pipe section. Afterward, the dual-drive assembly drives the two conical clamps 6 to rotate. Since the conical arc surfaces of the clamps 6 have been inserted into the inner wall of the flue and the weld points have been initially formed, the two conical clamps 6 can drive the entire flue to rotate, thus moving it along the entire... The circular weld seams are continuously welded. After the welding operation is completed, the two conical clamps 6 move away from each other and separate from the flue. Then, the support assembly is activated, causing multiple support balls 8 to move downwards simultaneously. During the downward movement of the support balls 8, since the flue leans against one side of the second protective plate 5, under the action of gravity, the second protective plate 5 always remains in contact with the top of the support balls 8 and rotates downwards accordingly. Finally, the second protective plate 5 flips to a downward tilted position, forming a smooth docking relationship with the sliding table 9, allowing the welded flue to automatically slide down along the second protective plate 5. The material is fed onto the sliding table 9 to complete the unloading of the flue. After unloading, the support ball 8 moves upward again and drives the second guard plate 5 to rotate upward, so that it and the first guard plate 4 return to the V-shaped state. During this reset process, the movement of the support ball 8 triggers the action of the feeding component. The feeding component releases the next new pipe section at the preparation point, so that it automatically slides down to the center position between the first guard plate 4 and the second guard plate 5. When the flue repair welding operation is performed next time, the flue to be repaired and welded can simply be placed on both sides between the first guard plate 4 and the second guard plate 5.

[0037] Through the above embodiments, the dual-drive assembly drives two conical clamps 6 to move relative to each other, inserting their conical arc surfaces into the inner walls of the two sections of flue to be repaired. Utilizing the self-centering characteristic of the conical surfaces, the flue is pushed towards the center. Since the first protective plate 4 and the second protective plate 5 maintain a V-shape, when the flue and the new pipe section are placed in the V-groove, their central axes remain on the same straight line. Thus, after the flue is pushed towards the center, it can simultaneously and precisely align with both sides of the new pipe section. After initial spot welding and fixing, the conical clamps 6 are driven to rotate. The friction between the clamps and the inner wall of the flue drives the entire assembly to rotate, allowing for continuous welding along the circular weld seam. This achieves rapid and precise positioning and alignment of the two flue sections and the new pipe section, ensuring weld quality. Through the support assembly, multiple... The support ball 8 presses against the outer side of the second protective plate 5 from below, forming a stable V-shaped groove between the second protective plate 5 and the first protective plate 4. This groove is used to place the flue and new pipe sections, preventing them from rolling. After welding, the support ball 8 moves downward, and the second protective plate 5, under the gravity of the flue, always adheres to the top of the support ball 8 and rotates downward accordingly. Finally, it docks with the sliding table 9, forming a ramp, allowing the welded flue to slide out automatically, achieving automatic material unloading. Through the material replenishment component, when the support ball 8 resets, a new pipe section that has been pre-placed at the preparation point is released and accurately slides into the center position between the first protective plate 4 and the second protective plate 5. This ensures that after each V-shaped groove reset, the center position is automatically replenished with a new pipe section, preparing for the next round of welding. This significantly shortens the auxiliary operation time and improves the continuity and efficiency of batch repair.

[0038] like Figures 1 to 2 As shown, the dual-drive assembly includes a limiting slide 10, which is fixedly installed above the welding table 1. A motor 13 is fixedly installed on one side of the limiting slide 10. The output shaft of the motor 13 is fixedly connected to a bidirectional screw 11. The bidirectional screw 11 is rotatably connected to the inner wall of the limiting slide 10. Both ends of the bidirectional screw 11 are threadedly connected to internally threaded sliders 12. The internally threaded sliders 12 are slidably connected to and adapted to the inner wall of the limiting slide 10. The top of each internally threaded slider 12 is fixedly connected to a connector 14. One end of the conical clamp 6 is rotatably connected to the inner wall of the connector 14.

[0039] During operation: Start motor 13. The output shaft of motor 13 drives the bidirectional screw 11 to rotate. Since the threads at both ends of the bidirectional screw 11 are in opposite directions and guided by the sliding guide on the inner wall of the limiting slide block 10, the two internal thread sliders 12 will move synchronously in opposite directions. Through the connecting piece 14, they will drive the two conical clamps 6 to move closer to each other, so that the conical arc surface of the conical clamps 6 will be inserted into the inner wall of the two flue sections and apply a pushing force to push the two flue sections to join with the new pipe section. After the spot welding is completed, the conical clamps 6 rotate to drive the flue to rotate and complete the continuous welding. After the welding is completed, the two internal thread sliders 12 move away from each other and the conical clamps 6 are driven out of the inner wall of the flue through the connecting piece 14 and separated from the flue.

[0040] like Figures 1 to 2 As shown, a second motor 15 is fixedly installed on one side of the connector 14. The output shaft of the second motor 15 and a transmission gear 16 are fixedly connected to one side of the conical clamp 6. The teeth of the two transmission gears 16 mesh with each other.

[0041] During operation: When the conical arc surface of the conical clamp 6 is inserted into the inner wall of the two flue sections and a thrust is applied, the two flue sections are pushed to align with the new pipe section. The spot welding mechanism 7 performs spot welding to initially fix the flue and the new pipe section. Then, the motor 15 starts. Under the mutual meshing of the two transmission gears 16, the conical clamp 6 rotates. Since the conical arc surface of the conical clamp 6 has been inserted into the inner wall of the flue and the weld point has been initially formed, the synchronous rotation of the two conical clamps 6 can drive the entire flue assembly to rotate and complete continuous welding along the circular weld.

[0042] like Figures 4 to 6 As shown, the support assembly includes a shock-absorbing bracket 17. Multiple support rods of the shock-absorbing bracket 17 are fixedly connected to the lower part of the support ball 8. All support rods of the shock-absorbing bracket 17 are inserted into the inner wall of the support plate 2. A guide slide 18 is fixedly connected to the bottom of the shock-absorbing bracket 17. A guide groove 20 is opened on the inner wall of the guide slide 18. A slide rod 19 is slidably connected to the inner wall of the guide groove 20.

[0043] During operation: After the two repaired flue sections and the new pipe section are combined and welded, the slide rod 19 moves laterally along the inner wall of the guide groove 20. When the slide rod 19 moves laterally, it will pass through the inclined surface of the guide groove 20 and push the guide slide table 18 to move downward. The guide slide table 18 drives the shock absorber bracket 17 to move downward synchronously. Multiple support rods of the shock absorber bracket 17 slide downward along the inner wall of the support plate 2, thereby driving multiple support balls 8 fixedly connected to the support rods to move downward simultaneously, so that the support balls 8 are released from the support of the second protective plate 5. The second protective plate 5 flips downward under the action of the flue gravity and docks with the sliding table 9 to complete the unloading.

[0044] like Figures 4 to 6 As shown, the support assembly also includes a hydraulic rod 24, which is fixedly installed above the bracket plate 2. The output end of the hydraulic rod 24 is fixedly connected to a connecting frame 23. Both ends of the slide rod 19 are fixedly connected to side sliders 21. Limiting rods 22 are symmetrically fixedly connected to the side of the bracket plate 2. The side sliders 21 are slidably connected to the outer wall of the limiting rods 22 respectively. The connecting frame 23 is fixedly connected to the side of the two side sliders 21.

[0045] During operation: After the two repaired flue sections and the new pipe section are combined and welded, the hydraulic rod 24 is activated. The output end of the hydraulic rod 24 extends and drives the side slider 21 to slide laterally along the outer wall of the limit rod 22 through the connecting frame 23. The slide rod 19 moves laterally together with the side slider 21 and pushes the guide slide table 18 downward through the inclined surface of the guide groove 20, thereby causing multiple support balls 8 to move downward at the same time, so that the support balls 8 are disengaged from the support of the second guard plate 5 and flip downward.

[0046] like Figures 7 to 8 As shown, a base support frame 42 is fixedly connected to one side of the welding table 1, and a material preparation slide 25 is fixedly connected above the base support frame 42. The material preparation slide 25 is fixedly connected to the center of one side of the guard plate 4. A bearing seat 27 is fixedly connected to the outside of the material preparation slide 25, and a baffle plate 26 is fixedly connected to the outer wall of the shaft of the bearing seat 27.

[0047] During operation: The pipe section to be repaired is placed on the upper surface of the preparation slide 25. In the initial state, the baffle plate 26 is perpendicular to the preparation slide 25 to intercept the pipe section and prevent it from sliding down the surface of the preparation slide 25 due to gravity under normal conditions. When the output end of the hydraulic rod 24 retracts, the support ball 8 moves upward again, pushing the second guard plate 5 to rotate upward, so that the first guard plate 4 and the second guard plate 5 return to the V-shaped state. During this reset process, the shaft on the bearing seat 27 will rotate through the feeding component, causing the baffle plate 26 to flip downward to be parallel to the preparation slide 25, releasing the interception of the pipe section. The next new pipe section on the preparation slide 25 will automatically slide down the surface of the preparation slide 25 under the action of gravity and fall into the center position between the first guard plate 4 and the second guard plate 5, completing the automatic feeding.

[0048] like Figures 7 to 10 As shown, the feeding assembly includes two limiting rods 30, which are fixedly connected to the sides of the bottom support frame 42. Slide frames 29 are slidably connected to the outer walls of the limiting rods 30. Racks 31 are fixedly connected to the top of the slide frames 29. Gears 28 are fixedly connected to both ends of the shaft of the bearing seat 27. The teeth of the rack 31 can mesh with the teeth of the gears 28. A pushing component is provided at the hydraulic rod 24 to drive the slide frames 29 to move laterally along the surface of the limiting rods 30.

[0049] During operation: When the output end of the hydraulic rod 24 extends, causing multiple support balls 8 to move downwards and the second guard plate 5 to flip downwards for material feeding, the pushing component does not contact the slide frame 29. Therefore, the slide frame 29 remains stationary, the rack 31 does not mesh with the gear 28, and the blocking plate 26 remains in a vertical interception state. When the output end of the hydraulic rod 24 retracts, the pushing component drives the slide frame 29 to slide along the outer wall of the second limit rod 30. The slide frame 29 drives the rack 31 above it to move synchronously. The teeth of the rack 31 mesh with the teeth of the gear 28, thereby driving the gear 28 to rotate. The gear 28 drives the shaft of the bearing seat 27 to rotate. The shaft drives the blocking plate 26 to flip downwards to a state parallel to the material preparation slide 25, releasing the interception of the pipe section. The new pipe section on the material preparation slide 25 automatically slides down to the center position between the first guard plate 4 and the second guard plate 5 under the action of gravity, completing the automatic material replenishment.

[0050] like Figure 10 As shown, the pushing assembly includes a notch plate 32, which is fixedly connected to the bottom of two slide frames 29. A telescopic rod 33 is fixedly connected above the output end of the hydraulic rod 24, and a push ball 34 is fixedly connected to the top of the telescopic rod 33.

[0051] During operation: When the output end of the hydraulic rod 24 extends, the telescopic rod 33 and the push ball 34 move synchronously. At this time, when the push ball 34 passes through the notch plate 32, it will pass through the notch without contacting the notch plate 32. Therefore, the slide frame 29 remains stationary, and the blocking plate 26 maintains a vertical interception state. When the output end of the hydraulic rod 24 retracts, the telescopic rod 33 drives the push ball 34 to move upward synchronously. At this time, when the push ball 34 passes through the notch plate 32, it will contact the top of the notch of the notch plate 32. When the push ball 34 continues to move, it will push the notch plate 32 to move laterally. The notch plate 32 drives the two slide frames 29 to slide along the outer wall of the limit rod 2 30. The slide frame 29 drives the rack 31 to move. The rack 31 meshes with the drive gear 28 to rotate, causing the blocking plate 26 to flip downward and release the interception of the pipe section.

[0052] like Figures 8 to 10 As shown, a plug plate 35 is fixedly connected to the inner side of the bottom support frame 42, a plug rod 37 is plugged into the inner wall of the plug plate 35, a limit block 36 is fixedly connected to the top of the plug rod 37, a wedge block 38 is fixedly connected to the bottom of the plug rod 37, and a wedge block 39 is fixedly connected to the top of the slide frame 29. The wedge block 38 and the wedge block 39 fit together.

[0053] During operation: In the initial state, the top of the limiting block 36 is flush with the upper surface of the preparation slide 25, which does not affect the normal sliding of the pipe section. When the slide frame 29 slides along the outer wall of the second limiting rod 30, the blocking plate 26 will flip downward to release the first pipe section to slide downward. When the second wedge block 39 moves with the slide frame 29 and contacts the first wedge block 38, the inclined surfaces of the two fit together and squeeze, pushing the first wedge block 38 to drive the insertion rod 37 to slide upward along the inner wall of the insertion plate 35. The insertion rod 37 drives the limiting block 36 to move upward synchronously, so that the limiting block 36 protrudes upward from the upper surface of the preparation slide 25, thereby blocking the subsequent second pipe section on the preparation slide 25 from rolling forward, ensuring that only one pipe section is released each time to complete a single replenishment.

[0054] like Figures 8 to 10 As shown, a spring 40 is fixedly connected between one side of the skateboard frame 29 and one end of the limiting rod 30, and a spring 41 is provided on the outside of the plug rod 37. The two ends of the spring 41 are fixedly connected to the bottom of the limiting block 36 and the top of the plug plate 35, respectively.

[0055] During operation: When the output end of the hydraulic rod 24 retracts, the sliding plate frame 29 is pushed along the limiting rod 30 by the pushing assembly, and the spring 40 is compressed. At the same time, the sliding plate frame 29 drives the wedge block 39 to move. The inclined surfaces of the wedge block 39 and the wedge block 38 engage and press against each other, pushing the wedge block 38 to drive the plug rod 37 to slide upward along the plug plate 35, and the spring 41 is compressed. After the pipe section is refilled, the telescopic rod 33 continues to retract, causing the push ball 34 to disengage from the notch plate 32. At this time, the sliding plate frame 29 and the limiting block 36 automatically return to their initial state under the elastic force of the spring 40 and the spring 41, respectively, completing the entire reset action.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for repairing converter gasification flue, comprising a welding table, characterized in that: A support plate is fixedly connected above the welding table. A clamping seat is symmetrically fixedly connected above the support plate. A first guard plate is fixedly connected to one side of the clamping seat, and a second guard plate is rotatably connected to the other side of the clamping seat. Conical clamps are provided on both sides of the first and second guard plates. A dual-drive assembly is provided below the conical clamps, which can drive the two conical clamps to move relative to each other and rotate on their own. Two sets of spot welding mechanisms are fixedly installed above the support plate. A support assembly is provided on the outer side of the second guard plate. The support assembly includes multiple support balls that can move downwards simultaneously. The outer walls of the support balls are all in contact with the outer side of the second guard plate. A feeding assembly is provided on one side of the first guard plate. The feeding assembly allows new pipe sections to be fed between the first and second guard plates. A sliding table is fixedly connected to the surface of the welding table.

2. The converter gasification flue repair and welding device according to claim 1, characterized in that: The dual-drive assembly includes a limiting slide, which is fixedly installed above the welding table. A motor is fixedly installed on one side of the limiting slide. The output shaft of the motor is fixedly connected to a bidirectional screw. The bidirectional screw is rotatably connected to the inner wall of the limiting slide. Both ends of the bidirectional screw are threaded with internally threaded sliders. The internally threaded sliders are slidably connected to and adapted to the inner wall of the limiting slide. The top of each internally threaded slider is fixedly connected to a connector. One end of the conical clamp is rotatably connected to the inner wall of the connector.

3. The converter gasification flue repair and welding device according to claim 2, characterized in that: Motor 2 is fixedly installed on one side of the connector. The output shaft of motor 2 and one side of the conical clamp are both fixedly connected with transmission gears, and the teeth of the two transmission gears mesh with each other.

4. The converter gasification flue repair and welding device according to claim 3, characterized in that: The support assembly includes a shock-absorbing bracket, with multiple support rods of the shock-absorbing bracket fixedly connected to the bottom of the support ball. The support rods of the shock-absorbing bracket are all inserted into the inner wall of the support plate. A guide slide is fixedly connected to the bottom of the shock-absorbing bracket. A guide groove is opened on the inner wall of the guide slide, and a slide rod is slidably connected to the inner wall of the guide groove.

5. The converter gasification flue repair and welding device according to claim 4, characterized in that: The support assembly also includes a hydraulic rod, which is fixedly installed above the bracket plate. The output end of the hydraulic rod is fixedly connected to a connecting frame. Both ends of the slide rod are fixedly connected to side sliders. Limiting rods are symmetrically fixedly connected to the sides of the bracket plate. The side sliders are slidably connected to the outer walls of the limiting rods. The connecting frame is fixedly connected to the sides of the two side sliders.

6. The converter gasification flue repair and welding device according to claim 5, characterized in that: A base support frame is fixedly connected to one side of the welding table, and a material preparation slide is fixedly connected above the base support frame. The material preparation slide is fixedly connected to the center of one side of the guard plate. A bearing seat is fixedly connected to the outside of the material preparation slide, and a baffle plate is fixedly connected to the outer wall of the shaft of the bearing seat.

7. The converter gasification flue repair and welding device according to claim 6, characterized in that: The feeding assembly includes two limiting rods, which are fixedly connected to the sides of the bottom support frame. Each limiting rod has a sliding plate frame slidably connected to its outer wall. Each sliding plate frame has a rack fixedly connected to its top. Both ends of the shaft of the bearing seat are fixedly connected to gears. The teeth of the rack can mesh with the teeth of the gears. A pushing component is provided at the hydraulic rod to drive the sliding plate frame to move laterally along the surface of the limiting rod.

8. The converter gasification flue repair and welding device according to claim 7, characterized in that: The pushing assembly includes a notch plate, which is fixedly connected to the bottom of two slide frames. A telescopic rod is fixedly connected above the output end of the hydraulic rod, and a push ball is fixedly connected to the top of the telescopic rod.

9. The converter gasification flue repair and welding device according to claim 8, characterized in that: A plug-in plate is fixedly connected to the inner side of the bottom support frame. A plug-in rod is inserted into the inner wall of the plug-in plate. A limit block is fixedly connected to the top of the plug-in rod. A wedge block one is fixedly connected to the bottom of the plug-in rod. A wedge block two is fixedly connected to the top of the slide frame. The wedge block one and the wedge block two fit together.

10. The converter gasification flue repair and welding device according to claim 9, characterized in that: A spring is fixedly connected between one side of the skateboard frame and one end of the limiting rod. A spring is provided on the outside of the plug rod. The two ends of the spring are fixedly connected to the bottom of the limiting block and the top of the plug plate, respectively.

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