A gantry submerged arc welding machine for square steel machining

Abstract

The application relates to the field of square steel submerged-arc welding, and discloses a gantry submerged-arc welding machine for square steel machining, which comprises a gantry, a submerged-arc welding assembly, a stripping and cleaning assembly, a recovery cabin, a recovery assembly, a recovery box and a crushing assembly. The stripping and cleaning assembly strips long strip-shaped welding slag from a weld joint, sweeps and cleans residual scrap slag around the weld joint, and pushes the long strip-shaped welding slag and the scrap slag to the top edge of a U-shaped steel plate so that the long strip-shaped welding slag and the scrap slag fall down. The recovery assembly receives the falling long strip-shaped welding slag and scrap slag and makes the long strip-shaped welding slag and the scrap slag slide into the recovery cabin. The crushing assembly extrudes and crushes the long strip-shaped welding slag and the scrap slag, and discharges the crushed scrap into the recovery box. In the application, the long strip-shaped welding slag protruding from the surface of the weld joint is first stripped by the stripping and cleaning assembly, and the scrap adhering to the recessed part of the weld joint is removed. Then, the long strip-shaped welding slag and the scrap after cleaning are recovered, and extrusion and volume reduction and crushing and volume reduction are completed by the crushing assembly. Finally, the crushed scrap is neatly stored, and the overall welding slag treatment efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of submerged arc welding technology, and specifically to a gantry-type submerged arc welding machine for square steel processing. Background Technology

[0002] Square steel, as a basic profile in steel structure buildings, mechanical parts, hardware components and other fields, has the characteristics of high structural strength, good plasticity and wide adaptability. It is widely used in industrial mass production. Submerged arc welding is the mainstream welding process for splicing and forming square steel. During the submerged arc welding operation, after the weld pool solidifies, a large amount of welding slag and impurities will be attached to the surface and surrounding area of ​​the square steel weld. Generally, operators rely on tools such as shovels to remove the welding slag from the weld surface. The manual slag removal operation is arduous and inefficient.

[0003] To address the issues of low efficiency and high labor intensity associated with manual slag removal, existing technologies have seen the emergence of automatic slag removal devices adapted to welding equipment. These devices typically employ a rigid scraping method to clean the slag. However, in actual welding conditions, the surface of square steel welds is generally uneven due to factors such as welding temperature, molten pool flow, and profile flatness. A single scraping structure can only peel off the raised strips of slag from the weld surface, failing to clean the debris attached to the recessed areas. Furthermore, the long, intact strips of slag cleaned by the equipment are loose and occupy a large space, limiting the storage capacity of the equipment's storage chamber and necessitating frequent shutdowns for unloading and transfer, thus affecting the continuity of welding operations.

[0004] Therefore, the existing submerged arc welding equipment for square steel adopts a single slag removal structure, which cannot adapt to the diverse slag shapes and irregular weld conditions. It has many dead corners in slag removal, poor slag removal effect, and the recovered bulk long strips of slag occupy a lot of space. The equipment has limited material storage capacity and requires frequent shutdowns for unloading, which affects the overall welding processing efficiency and forming accuracy. Summary of the Invention

[0005] To address this, the present invention provides a gantry-type submerged arc welding machine for square steel processing, which effectively solves the technical problems of poor slag removal effect, insufficient forming accuracy, and the need for frequent machine stops for unloading, which affects the welding processing efficiency of existing square steel submerged arc welding equipment.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: a gantry-type submerged arc welding machine for square steel processing, comprising: A gantry frame is provided with guide rails installed on its bottom side. The gantry frame slides along the guide rails, and a sliding frame is slidably installed on the crossbeam at the top of the gantry frame. A submerged arc welding assembly is installed on the sliding frame. The welding torch of the submerged arc welding assembly is positioned directly over the joint between the U-shaped steel plate and the straight steel plate. The submerged arc welding assembly moves along the length of the U-shaped steel plate and the straight steel plate with the gantry frame to continuously weld the joint between the U-shaped steel plate and the straight steel plate. After the submerged arc welding assembly performs the welding operation, long strips of welding slag are formed on the surface of the weld. The stripping and cleaning assembly is installed on the gantry and located behind the submerged arc welding assembly. The stripping and cleaning assembly strips the long strip of welding slag from the weld and cleans the residual slag around the weld. At the same time, it pushes the long strip of welding slag and debris to the top edge of the U-shaped steel plate so that it falls off. The recovery compartment is installed below the stripping and cleaning assembly and abuts against the side of the U-shaped steel plate, and the side wall of the recovery compartment is provided with slots. A recycling component is installed at the slot, which receives the falling long strips of welding slag and debris and allows them to slide down the recycling component into the recycling chamber. A recycling box is installed at the bottom of the recycling compartment; A crushing assembly is installed inside the recycling chamber. The crushing assembly crushes the long strips of welding slag and debris, and discharges the crushed material into the recycling box.

[0007] Furthermore, the stripping and cleaning assembly includes a cleaning chamber, a rotating column disposed at the center of the cleaning chamber, and a stripping plate and a cleaning plate installed on the side wall of the rotating column; A mounting frame is installed on the side of the gantry frame. The cleaning chamber and the recovery chamber are connected by a connecting plate. The recovery chamber is fixed on the mounting frame. The bottom of the cleaning chamber opens downwards, and the side wall of the cleaning chamber is provided with a side opening facing the forward direction of the submerged arc welding assembly, with the end of the side opening facing the recovery assembly. The rotating column is arranged vertically, and there are several equal peeling plates and cleaning plates. The peeling plates and cleaning plates are staggered along the radial direction of the rotating column.

[0008] Furthermore, a brush is installed at the bottom of the cleaning plate; The bottom of the stripping plate is vertically provided with several staggered first and second shaving blades. Both the first and second shaving blades are in contact with the weld surface, and the length of the first shaving blade is less than the length of the second shaving blade.

[0009] Furthermore, the outer wall of the rotating column extends at least partially beyond the top edge of the U-shaped steel plate; The top of the cleaning chamber is equipped with a first drive motor, and the drive end of the first drive motor is coaxially connected to the rotating column.

[0010] Furthermore, the recycling assembly includes a guide trough seat fixedly installed within the slot; The material guide trough seat opens upwards, and the bottom surface of the material guide trough seat is formed as an inclined surface.

[0011] Furthermore, the recycling chamber is symmetrically provided with sliding slot seats, which are arranged vertically. A lifting valve plate is slidably arranged in the sliding slot seat, which is directly opposite the discharge end of the material guide slot seat and can close the discharge end of the material guide slot seat. The bottom of the sliding groove seat is provided with an installation plate, and a limit bolt is provided through the installation plate. The top of the limit bolt is connected to the lifting valve plate, and a connecting spring is wound around the limit bolt. One end of the connecting spring is connected to the lifting valve plate, and the other end is connected to the installation plate.

[0012] Furthermore, the crushing assembly includes a rotating plate disposed within the recovery chamber and a fixed shaft disposed at the end of the rotating plate; The rotating plate is capable of rotating around the fixed axis, and a baffle is vertically connected to the middle position of the rotating plate; The recovery chamber is equipped with a partition, which is directly opposite to and parallel to the side wall of the recovery chamber. At least two first arc-shaped sliding grooves are provided on both the inner wall of one side of the recovery chamber and the partition. A rotating plate is movably installed in the recovery chamber, with one end of the rotating plate abutting against the top of the lifting valve plate and the other end abutting against the end of the rotating plate. The rotating plate is connected to side plates on both sides, one end of the side plate abuts against the two sides of the baffle, and the other end extends to the bottom of the discharge end of the guide trough. The outer wall of the side plate is provided with a sliding arc block, which is slidably disposed in the first arc-shaped groove, and a telescopic spring is connected between the sliding arc block and the first arc-shaped groove. The rotating plate is provided with a push rod at one end, and the bottom of the rotating plate is provided with a push groove for the push rod to enter.

[0013] Furthermore, a connecting shaft is provided through the bottom of the rotating plate along the width direction, and a second arc-shaped groove is provided on the inner wall of one side of the recovery chamber and on the partition plate, and the connecting shaft is slidably disposed in the second arc-shaped groove; The connecting shaft passes through the partition, and a first pull wheel is rotatably mounted on the end of the connecting shaft; A rotating shaft is provided through the partition plate, and a fan-shaped extrusion block is rotatably mounted on the rotating shaft, with the fan-shaped extrusion block facing directly above the rotating plate; The outer end of the rotating shaft is connected to a rotating plate. A second traction wheel is rotatably mounted on the rotating plate at a position away from the rotating shaft. A support wheel is rotatably mounted on the partition. A traction belt is connected to the first traction wheel. The end of the traction belt passes through the support wheel and is connected to the second traction wheel.

[0014] Furthermore, a first gear is coaxially mounted on the rotating shaft, a second gear meshes with the side of the first gear, a third gear meshes with the side of the second gear, a drive shaft is coaxially mounted on the third gear, a second drive motor is mounted on the drive shaft, and the drive shaft is connected to the drive end of the second drive motor. Both the second gear and the third gear are rotatably mounted on the partition plate.

[0015] Furthermore, the side of the recycling compartment is provided with a hatch through which the recycling box passes.

[0016] Compared with the prior art, the present invention has the following advantages: In this invention, the protruding long strips of welding slag on the weld surface are first peeled off by the peeling and cleaning component, and the debris attached to the weld depression is removed to complete the all-round slag cleaning operation. Then, the cleaned long strips of welding slag and debris are recycled, and the crushing component is used to complete the compression and crushing to reduce the volume, and finally the debris is neatly collected. This realizes the fully automated operation of welding slag cleaning, crushing, collection and recycling in the square steel welding process, and improves the overall welding slag treatment efficiency. In this invention, for the working conditions of uneven weld surface and different slag morphology, a dual operation method of peeling and cleaning is used to treat long strips of slag and attached fragments respectively, remove slag impurities from the weld surface and surrounding area, eliminate cleaning dead corners, improve the quality of weld slag removal, and improve the welding forming accuracy of square steel. This invention uses a crushing component to compress and crush long strips of welding slag and fragments, reducing their volume and increasing the storage capacity of the recycling box. This solves the problem of frequent equipment shutdowns for unloading, ensures the continuity of submerged arc welding operations on square steel, and improves overall welding efficiency. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a gantry-type submerged arc welding machine for square steel processing, provided in an embodiment of the present invention. Figure 2 This is a structural schematic diagram from another perspective of a gantry-type submerged arc welding machine for square steel processing provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the stripping and cleaning component, the recovery chamber, and the recovery component in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the recovery chamber, the material guide trough, and the cleaning chamber in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the stripping and cleaning assembly in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the recovery chamber and recovery components in an embodiment of the present invention; Figure 7 for Figure 6 A top-view structural diagram; Figure 8 for Figure 7 A three-dimensional sectional view along the AA direction; Figure 9 for Figure 7 A three-dimensional sectional view along the BB direction; Figure 10 This is a schematic diagram of the internal structure of the recovery chamber in an embodiment of the present invention; Figure 11 This is a partial structural schematic diagram of the crushing component in an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the rotating plate, the rotating plate, and the fan-shaped extrusion block in an embodiment of the present invention; Figure 13 for Figure 12 A structural diagram from another perspective; Figure 14 This is a schematic diagram of the structure of the rotating plate and the rotating plate in an embodiment of the present invention; Figure 15 This is a schematic diagram of the downward swinging structure of the rotating plate in an embodiment of the present invention.

[0019] The labels in the diagram represent the following: 1. Gantry crane; 2. Submerged arc welding assembly; 3. Stripping and cleaning assembly; 4. Recovery compartment; 5. Recovery assembly; 6. Recovery box; 7. Crushing assembly; 8. Guide rail; 9. Sliding frame; 10. U-shaped steel plate; 11. Straight steel plate; 12. Slotting; 13. Hatch; 31. Cleaning chamber; 32. Rotating column; 33. Peeling plate; 34. Cleaning plate; 35. Mounting frame; 36. Connecting plate; 37. Side opening; 38. Brush; 39. First shaving blade; 310. Second shaving blade; 51. Feed guide trough seat; 52. Inclined surface; 53. Sliding trough seat; 54. Lifting valve plate; 55. Mounting plate; 56. Limit bolt; 57. Connecting spring; 71. Rotating plate; 72. Fixed shaft; 73. Baffle; 74. Partition; 75. First arc-shaped slide groove; 76. Rotating plate; 77. Side plate; 78. Sliding arc block; 79. Push rod; 710. Push groove; 711. Connecting shaft; 712. Second arc-shaped slide groove; 713. First traction wheel; 714. Rotating shaft; 715. Fan-shaped extrusion block; 716. Rotating long plate; 717. Second traction wheel; 718. Support wheel; 719. Traction belt; 720. First gear; 721. Second gear; 722. Third gear; 723. Second drive motor. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-4 As shown, this invention discloses a gantry-type submerged arc welding machine for square steel processing, mainly composed of a gantry frame 1, a submerged arc welding assembly 2, a stripping and cleaning assembly 3, a recovery chamber 4, a recovery assembly 5, a recovery box 6, and a crushing assembly 7. These components work together to complete the integrated operation of square steel welding, weld slag removal, and weld slag crushing and recovery. The main structure and working principle of the equipment are described in detail below: The bottom side of the gantry frame 1 is equipped with a guide rail 8, and the gantry frame 1 can slide horizontally along the guide rail 8; a sliding frame 9 is slidably mounted on the crossbeam at the top of the gantry frame 1, and the sliding frame 9 can slide laterally along the crossbeam, thereby realizing multi-directional position adjustment of the welded structure. The steel plate to be processed (U-shaped steel plate 10 and straight steel plate 11) is placed in the center between the two sets of guide rails 8, and the length direction of the steel plate to be processed is consistent with the extension direction of the guide rail 8. Submerged arc welding assembly 2 is fixedly installed on the sliding frame 9. The welding torch of the submerged arc welding assembly 2 is directly facing the splicing joint of the U-shaped steel plate 10 and the straight steel plate 11. During the welding operation, the gantry frame 1 moves at a constant speed along the guide rail 8 along the length direction of the U-shaped steel plate 10 and the straight steel plate 11, driving the submerged arc welding assembly 2 to move synchronously and continuously perform submerged arc welding on the splicing position of the U-shaped steel plate 10 and the straight steel plate 11. After the welding of the steel plate splicing position is completed, a continuous long strip of welding slag will be formed on the surface of the weld. The stripping and cleaning component 3 is fixedly mounted on the rear side of the submerged arc welding assembly 2 on the gantry frame 1 and can move synchronously with the gantry frame 1. After the submerged arc welding assembly 2 completes the welding, the stripping and cleaning component 3 completes the slag removal and cleaning operations in sequence: firstly, the long strips of welding slag formed on the surface of the weld are stripped off as a whole, and then the fine and fragmented welding slag and residues attached to the periphery of the weld are thoroughly cleaned. At the same time, the stripped long strips of welding slag and the collected fragments are pushed and swept to the top edge of the U-shaped steel plate 10, so that the long strips of welding slag and fragments fall naturally by their own weight, thus completing the slag removal and collection pretreatment. The stripping and cleaning component 3 is attached to the side of the U-shaped steel plate 10 and a recycling chamber 4 is installed. The side wall of the recycling chamber 4 has a groove 12 for installation. The recycling chamber 4 serves as a collection and processing cavity and is mainly used to install the recycling component 5, the recycling box 6 and the crushing component 7. It provides a closed working space for receiving, crushing and collecting welding slag, avoids the scattering of welding slag and ensures a clean working environment. The recycling component 5 is embedded in the slot 12 of the recycling chamber 4, directly opposite the slag falling area of ​​the edge of the U-shaped steel plate 10 above. It can receive the long strips of welding slag and fragments that fall naturally, and through its own structure, the welding slag slides smoothly into the interior of the recycling chamber 4, completing the centralized introduction of welding slag. A recycling box 6 can be detachably installed at the bottom of the inner cavity of the recycling chamber 4, which is specifically used to collect the broken welding slag fragments. The crushing component 7 is fixedly installed inside the recycling chamber 4 and above the recycling box 6. When the welding slag is introduced into the recycling chamber 4, the crushing component 7 crushes the large-volume long strips of welding slag and irregular fragments, crushing the whole blocks and strips of welding slag into small fragments. After the crushing is completed, the material automatically falls into the recycling box 6 at the bottom, completing the crushing and collection of welding slag.

[0022] In this invention, for the condition of uneven weld surface and different slag morphology, a dual operation method of peeling and cleaning is used to treat long and complete slag and attached fragments respectively, effectively removing slag impurities on and around the weld surface, eliminating cleaning dead corners, improving the quality of weld slag removal, and ensuring the precision of square steel welding. Meanwhile, the crushing component 7 compresses and reduces the volume of the recovered welding slag, solving the problems of large space occupation, small storage capacity, and inconvenient transportation that exist in traditional equipment for directly recycling long strips of welding slag. This achieves fine crushing and volume reduction of the welding slag, which not only increases the equipment's storage capacity but also reduces the difficulty of welding slag transportation and recycling, avoids the safety hazards of scattering and injuring people during the transportation of bulk welding slag, and improves the safety of square steel welding processing.

[0023] In this invention, after the submerged arc welding assembly 2 completes welding, the stripping and cleaning assembly 3 sequentially performs weld slag removal and cleaning operations: first, the long strips of weld slag formed on the weld surface are completely stripped off; then, the debris attached to the weld perimeter is thoroughly cleaned; simultaneously, the stripped long strips of weld slag and the collected debris are pushed and swept to the top edge of the U-shaped steel plate 10, allowing the long strips of weld slag and debris to fall naturally under their own weight. The specific structure of the stripping and cleaning assembly 3 is as follows: like Figure 3 , Figure 4 and Figure 5 As shown, the stripping and cleaning assembly 3 mainly includes a cleaning chamber 31, a rotating column 32, a stripping plate 33, and a cleaning plate 34; The gantry frame 1 is fixedly equipped with an installation frame 35 on its side. The cleaning chamber 31 and the recovery chamber 4 are fixedly connected by a connecting plate 36, and the recovery chamber 4 is firmly installed on the installation frame 35 to achieve stable positioning of the overall structure and ensure structural stability during the slag cleaning operation. The bottom of the cleaning chamber 31 is an open structure, which facilitates the direct connection of the weld seam for slag removal operations. At the same time, the side wall of the cleaning chamber 31 is provided with a side opening 37 corresponding to the direction of travel of the submerged arc welding assembly 2. The end of the side opening 37 faces the recovery assembly 5, which can ensure that the cleaned welding slag is smoothly introduced into the recovery assembly 5. The cleaning chamber 31 has a vertically mounted rotating column 32 that can rotate on its own. The side wall of the rotating column 32 is equipped with a number of equal peeling plates 33 and cleaning plates 34 arranged radially and alternately. The peeling plates 33 and cleaning plates 34 are arranged alternately and work together.

[0024] During operation, the rotating column 32 continuously rotates, causing the peeling plate 33 and the cleaning plate 34 on the side wall to rotate synchronously. The peeling plate 33, in its rotating state, moves in contact with the weld surface, applying a continuous thrust to the solidified long strips of weld slag, achieving rapid peeling of the slag from the weld. Simultaneously, the cleaning plate 34 sweeps the area around the weld in all directions, removing adhering debris. This dual-structure operation completes the overall slag removal and cleaning of the weld.

[0025] To further improve the overall slag removal accuracy and effect of welds, and to avoid problems such as residual fine slag and incomplete removal of long strips of slag, the present invention provides the following structural design for the stripping plate 33 and the cleaning plate 34: The bottom end of the cleaning plate 34 is equipped with a brush 38, and the bottom surface of the brush 38 is tightly attached to the upper surface of the weld. As the cleaning plate 34 rotates synchronously with the rotating column 32, the brush 38 continuously brushes against the weld surface, which can thoroughly clean the tiny particles of welding slag, oxide scale and impurities remaining on the weld surface, make up for the cleaning blind spots in the cleaning of hard plates, purify the weld surface, and improve the flatness and cleanliness of the weld.

[0026] The bottom of the peeling plate 33 is vertically provided with several sets of staggered first shaving blades 39 and second shaving blades 310, and the first shaving blades 39 and second shaving blades 310 are horizontally arranged and attached to the weld surface. During the operation of the equipment, as the peeling plate 33 rotates and moves, the first shaving blades 39 and second shaving blades 310 gradually approach the long strip of welding slag and smoothly embed into the bottom of the long strip of welding slag. Through mechanical prying force, the long strip of welding slag that is attached and solidified is lifted and peeled off as a whole, breaking the solidified bond structure between the welding slag and the weld, and ensuring that the long strip of welding slag falls off.

[0027] Meanwhile, to further optimize the quality of slag stripping and avoid the problem of recycling blockage caused by excessively long slag strips, this invention limits the overall length of the first shaving blade 39 to be less than that of the second shaving blade 310. During the stripping process, the longer second shaving blade 310 will preferentially contact the long slag strip area and pry up the corresponding long slag strip from the weld. At this time, a stress difference is formed between the slag strip area that has not been pried up and the slag strip area that has been pried up, causing the complete long slag strip to automatically break and be stripped in segments, initially splitting the single long slag strip into multiple short slag strips. The above structural design not only reduces the difficulty of stripping long slag strips and improves the stripping efficiency, but also effectively shortens the length of slag entering the recycling component 5, avoids long slag strips getting stuck at the inlet of the recycling component 5, ensures smooth material discharge, and assists the subsequent crushing component 7 in completing the slag crushing operation, comprehensively improving the overall slag processing effect of the equipment.

[0028] To address the issue of incomplete weld slag removal caused by a small amount of residual welding slag adhering to the weld periphery and failing to be easily swept away, this invention optimizes the assembly position of the rotating column 32. The outer wall of the rotating column 32 extends at least partially beyond the top edge of the U-shaped steel plate 10, allowing the stripping plate 33 and cleaning plate 34 to have a suspended motion during the circumferential rotation of the rotating column 32. When the stripping plate 33 and cleaning plate 34 reach this suspended area, the long strips and fragments of welding slag pushed and carried by the front end of the plates lose weld support and can fall off under their own weight, preventing welding slag from remaining on and around the weld surface, eliminating residual slag, and further ensuring the integrity and comprehensiveness of weld slag removal.

[0029] In addition, to provide stable power output for the stripping and cleaning operation, a first drive motor is installed at the top of the cleaning chamber 31, and the output end of the first drive motor is coaxially and fixedly connected to the rotating column 32. During operation, the first drive motor drives the rotating column 32 to rotate at a constant speed, which in turn drives the stripping plate 33 and the cleaning plate 34 installed on the side wall of the rotating column 32 to make continuous circular motion, providing continuous and stable power support for the stripping of weld slag, cleaning of residual slag, and pushing and dropping of weld slag, ensuring continuous and automated operation of the slag cleaning operation, and effectively improving the stability of equipment operation and processing efficiency.

[0030] To address the issue of incomplete weld slag removal caused by a small amount of residual welding slag adhering to the weld periphery during the slag removal process and failing to be easily swept away, this invention optimizes the assembly position of the rotating column 32: the outer wall of the rotating column 32 extends at least partially beyond the top edge of the U-shaped steel plate 10, allowing the stripping plate 33 and the cleaning plate 34 to have a suspended motion stroke during the circumferential rotation of the rotating column 32; when the stripping plate 33 and the cleaning plate 34 move to the suspended area, the long strips of welding slag and fragments pushed and carried by the front end of the plate lose the weld support and can fall off by their own weight, preventing welding slag from remaining on and around the weld surface, solving the problem of residual slag, and ensuring the integrity and comprehensiveness of weld slag removal.

[0031] In addition, to provide stable power output for the stripping and cleaning operation, a first drive motor is installed at the top of the cleaning chamber 31, and the output end of the first drive motor is coaxially and fixedly connected to the rotating column 32. During operation, the first drive motor drives the rotating column 32 to rotate at a constant speed, which in turn drives the stripping plate 33 and the cleaning plate 34 installed on the side wall of the rotating column 32 to make continuous circular motion, providing continuous and stable power support for the stripping of weld slag, cleaning of residual slag, and pushing and dropping of weld slag, ensuring the continuous and automated operation of the slag cleaning operation.

[0032] In this invention, the recovery component 5 is arranged corresponding to the slag falling area at the edge of the upper U-shaped steel plate 10. It can receive the long strips of welding slag and fragments that fall naturally after the stripping and cleaning component 3 has finished its operation, and guides and transports the welding slag using its own flow guiding structure, so that the long strips of welding slag and fragments slide smoothly into the recovery chamber 4, completing the centralized and directional introduction of the welding slag. The specific structure of the recovery component 5 is as follows: like Figure 6 , Figure 7 and Figure 8 As shown, the recycling component 5 includes a guide trough seat 51 fixedly embedded inside the slot 12 of the recycling chamber 4. The guide trough seat 51 adopts an upward open structure design to increase the slag receiving area above, ensuring that all the falling welding slag can fall into the inside of the trough. At the same time, the inner bottom surface of the guide trough seat 51 is set as an inclined surface 52, and the overall structure is high in the front and low in the back. In actual operation, the long strips of welding slag and fragments that fall into the guide trough seat 51 can be automatically slid and conveyed to the rear side of the guide trough seat 51 under their own gravity and the guiding action of the inclined guide surface.

[0033] To prevent the feed trough 51 from continuously conveying long strips of welding slag and fragments backward, which could affect the crushing assembly 7, the present invention features the following specific structural design: like Figure 10As shown, vertically arranged sliding slot seats 53 are symmetrically fixedly installed inside the recovery chamber 4. A lifting valve plate 54 is slidably assembled between the two sets of sliding slot seats 53. The lifting valve plate 54 is set directly opposite the discharge end of the guide slot seat 51, which can realize the opening, closing and blocking control of the discharge port of the guide slot seat 51. A mounting plate 55 is fixedly installed at the bottom of the sliding groove seat 53. A limit bolt 56 is vertically mounted through the mounting plate 55. The top of the limit bolt 56 is fixedly connected to the bottom of the lifting valve plate 54. A connecting spring 57 is sleeved on the outside of the limit bolt 56. The connecting spring 57 is arranged vertically, with its top connected to the bottom surface of the lifting valve plate 54 and its bottom abutting and fixed to the surface of the mounting plate 55. The lifting valve plate 54 is automatically reset by the elastic deformation of the spring.

[0034] In actual operation, the lifting valve plate 54 can perform vertical lifting and lowering along the sliding groove seat 53 to achieve the opening and closing switching of the discharge port. When the lifting valve plate 54 slides upward to a certain height, it completely blocks and closes the discharge end of the guide trough seat 51, which can block the continuous conveying of long strips of welding slag and slag, and suspend material feeding. When the lifting valve plate 54 slides downward to a certain position, it disengages from the discharge end of the guide trough seat 51, the discharge channel is fully opened, and the long strips of welding slag and slag can be smoothly conveyed backward to the crushing component 7. During the downward movement of the lifting valve plate 54, it will drive the limit bolt 56 to move downward synchronously, squeezing the connecting spring 57 sleeved on the outside of the limit bolt 56 to compress and deform it. When the external pressure is released, the connecting spring 57 rebounds and resets, which can drive the lifting valve plate 54 to automatically move upward and reset, complete the channel blockage, and achieve the automated operation effect of intermittent feeding and automatic interception of the equipment.

[0035] In this invention, after the welding slag is introduced into the cavity of the recovery chamber 4 by the recovery component 5, the crushing component 7 can crush the large, long strips of welding slag and the irregularly shaped fine fragments of welding slag, crushing the strip-shaped and block-shaped whole welding slag into fine fragments. The crushed material falls automatically by its own weight and is collected in the recovery box 6 at the bottom, completing the welding slag volume reduction and recovery operation. The specific structure of the crushing component 7 is as follows: like Figures 11-14 As shown, the crushing assembly 7 is assembled inside the recovery chamber 4 and mainly includes a rotating plate 71, a fixed shaft 72, a baffle 73, a rotating plate 76, a side plate 77, a sliding arc block 78, and a push rod 79. The fixed shaft 72 is fixedly installed inside the recovery chamber 4, and the end of the rotating plate 71 is rotatably assembled to the outside of the fixed shaft 72, so that the rotating plate 71 can rotate and swing around the fixed shaft 72; a baffle 73 is vertically fixedly connected to the middle of the rotating plate 71, which swings synchronously with the rotating plate 71. The recovery chamber 4 is fixedly equipped with a partition 74. The partition 74 is arranged parallel to and directly opposite the side wall of the recovery chamber 4. At least two sets of first arc-shaped grooves 75 are opened on the opposite end face of the inner wall of one side of the recovery chamber 4 and the partition 74. The recovery chamber 4 is equipped with a rotating plate 76. One end of the rotating plate 76 abuts against the top of the lifting valve plate 54, and the bottom of the other end abuts against the end of the rotating plate 71. Side plates 77 are symmetrically fixed on both sides of the rotating plate 76. The two ends of the side plates 77 are respectively arranged to abut against each other: one end of the side plate 77 is attached to the two sides of the baffle 73, and the other end of the side plate 77 extends to the bottom of the discharge end of the guide trough seat 51. Each side plate 77 has a sliding arc block 78 fixedly installed on its outer wall. The sliding arc block 78 is slidably embedded in the corresponding first arc-shaped slide groove 75. A telescopic spring is installed between the sliding arc block 78 and the groove wall of the first arc-shaped slide groove 75. The adaptive sliding reset of the rotating plate 76 and the side plate 77 is achieved by the deformation and rebound of the telescopic spring. Meanwhile, a push rod 79 is fixedly provided at the end of the rotating plate 71, and a push groove 710 is correspondingly provided at the bottom of the rotating plate 76 for the push rod 79 to be inserted into the push, thereby realizing the power transmission from the rotating plate 71 to the rotating plate 76.

[0036] In addition, to reset the rotating plate 71 after rotation, a torsion spring is provided between the rotating plate 71 and the fixed shaft 72. When the rotating plate 71 is subjected to external force, it rotates upward around the fixed shaft 72, and the torsion spring deforms. When the external force is gradually removed, the torsion spring drives the rotating plate 71 to rotate downward around the fixed shaft 72 and reset.

[0037] During equipment operation, the rotating plate 76 and the side plate 77 can drive the sliding arc block 78 to slide along the first arc-shaped slide groove 75 in an arc-shaped trajectory, thereby completing the structural state switching; In the baseline operating state, the rotating plate 71 and the rotating plate 76 are arranged horizontally, and the baffle 73 and the two side plates 77 enclose each other to form a closed extrusion area, which can receive the long strips of welding slag and fragments that slide down from the discharge end of the guide trough seat 51. At this time, the rotating plate 76 presses down the top of the lifting valve plate 54, causing the lifting valve plate 54 to move down along the sliding trough seat 53, disengage and open the discharge port of the guide trough seat 51, and the long strips of welding slag and fragments can smoothly slide into the extrusion area above the rotating plate 71 and the rotating plate 76 to complete the material feeding and storage. When the rotating plate 71 is subjected to external force and rotates upward around the fixed shaft 72, the push rod 79 at the end is embedded in the push groove 710 and pushes the rotating plate 76, providing external driving force for the rotating plate 76. This causes the rotating plate 76 and the side plate 77 to swing upward in an arc along the first arc-shaped slide groove 75. During this process, the telescopic spring is compressed and undergoes elastic deformation. After the rotating plate 76 is raised, the downward pressure limit on the lifting valve plate 54 is released. The lifting valve plate 54 automatically moves upward under the rebound action of the connecting spring 57, closing the discharge end of the guide trough seat 51 and pausing the material feeding. At the same time, the extrusion area is raised and gradually tilted. The long strips of welding slag and fragments inside slide to the rear side of the rotating plate 76 and enter the extrusion operation station. When the rotating plate 71 is no longer subjected to external force and gradually rotates (swings downward) around the fixed axis 72 under the action of the torsion spring, the rotating plate 71 no longer applies a pushing force to the rotating plate 76. The compressed and deformed telescopic spring rebounds and resets, causing the sliding arc block 78 to slide in the opposite direction along the first arc-shaped slide groove 75, so that the rotating plate 76 and the side plate 77 are reset to the horizontal reference state. The rotating plate 76 presses down the lifting valve plate 54 again, reopens the discharge port of the guide trough seat 51, and completes the preparation for a new round of feeding. The overall structure realizes the automated operation of intermittent feeding, automatic interception, and linkage crushing through the mechanical linkage of the rotating plate 71, the rotating plate 76 and the lifting valve plate 54, effectively matching the crushing rhythm of the crushing component 7.

[0038] The design of the lifting valve plate 54 can promptly close the discharge port of the guide trough seat 51 when the rotating plate 76 is lifted and the extrusion operation is started, effectively preventing long strips of welding slag and fragments from continuously falling from the discharge port, avoiding the welding slag from falling directly out of the extrusion area and being unable to participate in the extrusion and crushing, thus structurally avoiding the defects of missed crushing and incomplete crushing, and ensuring full coverage of welding slag crushing operation.

[0039] To stably achieve the regular oscillation and crushing action of the rotating plate 71, and to match the fan-shaped crushing block 715 to complete the crushing operation, the present invention further designs the crushing component 7 structurally: like Figure 8 , Figure 9 , Figure 10 and Figure 13 As shown, a connecting shaft 711 is fixedly mounted through the bottom of the rotating plate 71 along its width direction. A second arc-shaped groove 712 is provided on the inner side wall of the recovery chamber 4 and the opposite end face of the partition 74. The two ends of the connecting shaft 711 are slidably embedded in the second arc-shaped groove 712 on both sides, so that the rotating plate 71 can swing in an arc shape along the second arc-shaped groove 712 by relying on the connecting shaft 711, thus limiting the movement trajectory of the rotating plate 71. The connecting shaft 711 is disposed through the partition 74, and the extended end is rotatably fitted with the first pull wheel 713; A rotating shaft 714 is mounted through the partition 74. A fan-shaped extrusion block 715 is fixedly installed on the inner end of the rotating shaft 714. The fan-shaped extrusion block 715 is arranged directly above the rotating plate 71, forming an extrusion and crushing station with the rotating plate 71 below. A rotating long plate 716 is fixedly connected to the outer end of the rotating shaft 714. A second pull wheel 717 is rotatably mounted on the end of the rotating long plate 716 away from the rotating shaft 714. At the same time, a support wheel 718 is fixedly mounted on the outer wall of the partition 74. A pull belt 719 is wound around the first pull wheel 713. The pull belt 719 passes around the support wheel 718 and its end is fixedly connected to the second pull wheel 717.

[0040] During equipment operation, the rotation of the rotating shaft 714 can synchronously drive the fan-shaped extrusion block 715 and the rotating long plate 716 to swing synchronously. When the rotating long plate 716 swings, it can drive the second traction wheel 717 to move closer to or further away from the support wheel 718, thereby realizing the bidirectional traction transmission of the traction belt 719: when the second traction wheel 717 moves closer to the support wheel 718, the traction belt 719 loosens, the first traction wheel 713 loses tension, and the rotating plate 71 swings downward under the elastic force of the torsion spring; when the second traction wheel 717 moves away from the support wheel 718, the traction belt 719 moves towards the side of the second traction wheel 717, and the first traction wheel 713 moves upward under the tension of the traction belt 719, driving the connecting shaft 711 and the rotating plate 71 to swing upward, thereby realizing the controllable lifting and lowering swing of the rotating plate 71.

[0041] When the fan-shaped extrusion block 715 swings to its highest point, the rotating plate 71 and the rotating plate 76 swing to their lowest positions simultaneously. When the fan-shaped extrusion block 715 swings down to its lowest point, the rotating plate 71 and the rotating plate 76 rise to their highest positions simultaneously. At this time, the distance between the fan-shaped extrusion block 715 and the rotating plate 71 is the smallest. As the distance between the two continues to decrease, the long strips of welding slag and broken slag retained in the extrusion area can be mechanically extruded, crushed and broken.

[0042] To provide power input for the reciprocating rotational oscillation of the rotating shaft 714, the present invention features the following specific structural design: like Figure 8 As shown, a first gear 720 is coaxially fixedly mounted on the outer side of the rotating shaft 714, and a second gear 721 and a third gear 722 that mesh with each other are sequentially mounted on the partition plate 74. The first gear 720 and the second gear 721 mesh with each other to form a multi-stage meshing transmission structure. The third gear 722 is coaxially and fixedly connected to the drive shaft, and the second drive motor 723 is mounted on the outside of the recovery chamber 4. The drive shaft is fixedly connected to the output end of the second drive motor 723.

[0043] During operation, the second drive motor 723 starts and drives the drive shaft to rotate, which in turn drives the third gear 722 to rotate synchronously. Through gear meshing, the second gear 721 and the first gear 720 are driven to rotate in sequence, and finally the rotating shaft 714 is driven to rotate back and forth, providing continuous and uniform power output for the entire extrusion, traction and swing linkage structure.

[0044] In addition, to facilitate the centralized cleaning and transfer of welding slag after crushing, a through hatch 13 is provided on the side of the recovery chamber 4, which allows the recovery box 6 to be freely inserted and removed. After the equipment completes several sets of square steel welding and welding slag recovery operations, the staff can use the hatch 13 to remove the recovery box 6 full of broken materials and replace it with an empty recovery box 6 to continue the operation.

[0045] The complete collaborative working process of recycling component 5 and crushing component 7 is as follows: In the initial standby state of the equipment, both the rotating plate 71 and the rotating plate 76 are in a horizontal position. The end of the rotating plate 76 presses down the lifting valve plate 54, so that the lifting valve plate 54 overcomes the elastic force of the connecting spring 57 and completely disengages from the discharge port of the guide trough seat 51. The discharge channel is in the open state, and the connecting spring 57 is in a compressed and stored state. The long strips of welding slag and fragments after being guided by the guide trough seat 51 can slide smoothly along the inclined surface 52 and fall from the discharge end to the horizontally arranged rotating plate 76, where they remain above the rotating plate 76, completing the batch material feeding and storage. During operation, the second drive motor 723 starts, driving the rotating shaft 714 to rotate via multi-stage gear transmission. This causes the fan-shaped extrusion block 715 to rotate synchronously, simultaneously driving the rotating long plate 716 to swing. This causes the second traction wheel 717 to move away from the support wheel 718. At this time, the traction belt 719 moves towards the second traction wheel 717. The first traction wheel 713 moves upward under the tension of the traction belt 719, pulling the connecting shaft 711 upward along the second arc-shaped slide groove 712. This causes the rotating plate 71 to move upward around the fixed shaft 72 as a fulcrum. During the upward movement of the oscillating rotating plate 71, the push rod 79 at the end is inserted into the push groove 710 at the bottom of the rotating plate 76 and pushes the rotating plate 76 upward, causing the rotating plate 76 and the side plate 77 to swing upward in an arc along the first arc-shaped slide groove 75. At the same time, the telescopic spring is squeezed to compress and store energy. After the rotating plate 76 is raised and tilted, the downward pressure limit on the lifting valve plate 54 is released. The lifting valve plate 54 automatically moves upward and resets under the rebound force of the connecting spring 57, completely closing the discharge port of the guide trough seat 51 and pausing the material feeding. At the same time, the rotating plate 76 and the rotating plate 71 are raised and tilted synchronously. The long strips of welding slag and debris above the rotating plate 76 slide to the rear of the rotating plate 76 by their own weight and are transported to the extrusion station between the fan-shaped extrusion block 715 and the rotating plate 71, waiting for the crushing operation. As the rotating shaft 714 continues to rotate, the fan-shaped extrusion block 715 gradually swings to the lowest working position. Combined with the synchronous lifting action of the rotating plate 71, the distance between the two continues to decrease, crushing the long strips of welding slag and fragments in the work station, breaking the long strips of welding slag and fragments into fine particles, and completing the single batch of welding slag volume reduction and crushing operation. After a single batch of crushing is completed, the rotating shaft 714 continues to rotate, driving the fan-shaped extrusion block 715 to continue rotating and move upward from the lowest point. At the same time, the rotating long plate 716 swings synchronously with the rotating shaft 714, causing the second traction wheel 717 to gradually approach the support wheel 718. At this time, the traction belt 719 tightens towards the first traction wheel 713, causing the first traction wheel 713 and the connecting shaft 711 to move downward, driving the rotating plate 71 to swing downward. Simultaneously, the compressed and stored telescopic spring rebounds and resets, driving the rotating plate 76 and the side plate 77 to move downward and reset synchronously, pressing down the lifting valve plate 54 again, causing the lifting valve plate 54 to move downward and open the discharge port of the guide trough seat 51. When the rotating plate 76 and the rotating plate 71 are completely reset to the horizontal state, the equipment reopens the feeding channel to prepare to receive the next batch of welding slag material. Rotating plate 71 continues to swing downwards, while rotating plate 76 remains horizontal. Figure 15 As shown, as the rotating plate 71 continues to swing downwards, one end gradually moves away from the end of the rotating plate 76 and lowers to above the opening of the recycling box 6. Under the action of gravity, the scrap slides down the rotating plate 71 into the recycling box 6, completing the scrap collection. Under this condition, the rotating plate 76 remains horizontal, and the sliding distance of the uncrushed residual welding slag on the plate surface is extremely small. It will not slide directly from the rear end of the rotating plate 76 into the recycling box 6, effectively avoiding the problem of uncrushed material falling directly and causing incomplete crushing. This part of the uncrushed welding slag will slide back onto the rotating plate 71 in the subsequent process of lifting and tilting the rotating plate 76, waiting to be crushed, ensuring that all welding slag can be fully crushed.

[0046] During continuous operation, the above structure is continuously reset and linked by the cyclic drive of the second drive motor 723, and completes the entire process of automatic feeding, interception and storage, linkage extrusion, crushing and discharge, and reset and replenishment of materials. This enables batch, continuous and automated crushing and recycling of welding slag, and improves the efficiency and automation of welding slag treatment during square steel welding.

[0047] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A gantry-type submerged arc welding machine for processing square steel, characterized in that, include: A gantry frame (1) has a guide rail (8) installed on its side bottom. The gantry frame (1) slides along the guide rail (8). A sliding frame (9) is slidably installed on the crossbeam at the top of the gantry frame (1). Submerged arc welding assembly (2) is installed on the sliding frame (9). The welding torch of the submerged arc welding assembly (2) is directly facing the joint between the U-shaped steel plate (10) and the straight steel plate (11). The submerged arc welding assembly (2) moves along the length of the U-shaped steel plate (10) and the straight steel plate (11) with the gantry frame (1) to continuously weld the joint between the U-shaped steel plate (10) and the straight steel plate (11). After the submerged arc welding assembly (2) performs the welding operation, long strips of welding slag are formed on the surface of the weld. The stripping and cleaning assembly (3) is installed on the gantry (1) and located behind the submerged arc welding assembly (2). The stripping and cleaning assembly strips the long strip of welding slag from the weld and cleans the residual slag around the weld. At the same time, it pushes the long strip of welding slag and slag to the top edge of the U-shaped steel plate (10) so that it falls off. The recycling compartment (4) is installed below the stripping and cleaning assembly (3) and abuts against the side of the U-shaped steel plate (10). The side wall of the recycling compartment (4) is provided with a slot (12). The recycling component (5) is installed at the slot (12). The recycling component (5) receives the falling long strips of welding slag and debris and allows them to slide down the recycling component (5) into the recycling chamber (4). A recycling box (6) is installed at the bottom of the recycling compartment (4); The crushing component (7) is installed in the recycling chamber (4). The crushing component (7) crushes the long strips of welding slag and slag, and discharges the crushed material into the recycling box (6).

2. The gantry-type submerged arc welding machine for square steel processing according to claim 1, characterized in that, The stripping and cleaning assembly (3) includes a cleaning chamber (31), a rotating column (32) located at the center of the cleaning chamber (31), and a stripping plate (33) and a cleaning plate (34) installed on the side wall of the rotating column (32). The gantry (1) is equipped with a mounting frame (35) on its side. The cleaning chamber (31) and the recovery chamber (4) are connected by a connecting plate (36). The recovery chamber (4) is fixed on the mounting frame (35). The bottom of the cleaning chamber (31) is open downwards, and the side wall of the cleaning chamber (31) is provided with a side opening (37) facing the forward direction of the submerged arc welding assembly (2), and the end of the side opening (37) is facing the recycling assembly (5). The rotating column (32) is arranged vertically, and there are several peeling plates (33) and cleaning plates (34) of equal number. The peeling plates (33) and cleaning plates (34) are arranged alternately along the radial direction of the rotating column (32).

3. The gantry-type submerged arc welding machine for square steel processing according to claim 2, characterized in that, A brush (38) is installed at the bottom of the cleaning plate (34); The bottom of the stripping plate (33) is vertically provided with a plurality of staggered first shaving blades (39) and second shaving blades (310). The first shaving blades (39) and the second shaving blades (310) are both in contact with the weld surface. The length of the first shaving blade (39) is less than the length of the second shaving blade (310).

4. The gantry-type submerged arc welding machine for square steel processing according to claim 3, characterized in that, The outer side wall of the rotating column (32) extends at least partially beyond the top edge of the U-shaped steel plate (10); The top of the cleaning chamber (31) is provided with a first drive motor, and the drive end of the first drive motor is coaxially connected to the rotating column (32).

5. The gantry-type submerged arc welding machine for square steel processing according to claim 1, characterized in that, The recycling component (5) includes a guide trough seat (51) fixedly installed in the slot (12); The guide trough (51) opens upward, and the bottom surface of the guide trough (51) is formed as an inclined surface (52).

6. The gantry-type submerged arc welding machine for square steel processing according to claim 2, characterized in that, The recycling chamber (4) is symmetrically provided with sliding slot seats (53), which are arranged in a vertical direction. A lifting valve plate (54) is slidably arranged in the sliding slot seat (53). The lifting valve plate (54) is directly opposite the discharge end of the guide slot seat (51) and can close the discharge end of the guide slot seat (51). The bottom of the sliding groove seat (53) is provided with an installation plate (55), and a limit bolt (56) is provided through the installation plate (55). The top of the limit bolt (56) is connected to the lifting valve plate (54), and a connecting spring (57) is provided around the limit bolt (56). One end of the connecting spring (57) is connected to the lifting valve plate (54), and the other end is connected to the installation plate (55).

7. The gantry-type submerged arc welding machine for square steel processing according to claim 6, characterized in that, The crushing assembly (7) includes a rotating plate (71) disposed in the recovery chamber (4) and a fixed shaft (72) disposed at the end of the rotating plate (71). The rotating plate (71) can rotate around the fixed axis (72), and a baffle (73) is vertically connected to the middle position of the rotating plate (71). The recovery chamber (4) is provided with a partition (74), which is directly opposite to and parallel to the side wall of the recovery chamber (4). At least two first arc-shaped sliding grooves (75) are provided on the inner wall of one side of the recovery chamber (4) and the partition (74). A rotating plate (76) is movably arranged in the recovery chamber (4). One end of the rotating plate (76) abuts against the top of the lifting valve plate (54), and the other end abuts against the end of the rotating plate (71). The rotating plate (76) is connected to two side plates (77) on both sides. One end of the side plate (77) abuts against the two sides of the baffle (73), and the other end extends to the bottom of the discharge end of the guide trough seat (51). The outer wall of the side plate (77) is provided with a sliding arc block (78), the sliding arc block (78) is slidably disposed in the first arc-shaped slide groove (75), and a telescopic spring is connected between the sliding arc block (78) and the first arc-shaped slide groove (75); The rotating plate (71) is provided with a push rod (79) at its end, and the bottom of the rotating plate (76) is provided with a push groove (710) for the push rod (79) to enter.

8. The gantry-type submerged arc welding machine for square steel processing according to claim 7, characterized in that, A connecting shaft (711) is provided through the bottom of the rotating plate (71) along the width direction. A second arc-shaped groove (712) is provided on the inner wall of one side of the recovery chamber (4) and on the partition (74). The connecting shaft (711) is slidably disposed in the second arc-shaped groove (712). The connecting shaft (711) passes through the partition (74), and a first pull wheel (713) is rotatably mounted on the end of the connecting shaft (711). A rotating shaft (714) is provided through the partition (74), and a fan-shaped extrusion block (715) is rotatably provided on the rotating shaft (714). The fan-shaped extrusion block (715) is directly above the rotating plate (71). The outer end of the rotating shaft (714) is connected to a rotating long plate (716). A second traction wheel (717) is rotatably mounted on the rotating long plate (716) at a position away from the rotating shaft (714). A support wheel (718) is rotatably mounted on the partition plate (74). A traction belt (719) is connected to the first traction wheel (713). The end of the traction belt (719) passes through the support wheel (718) and is connected to the second traction wheel (717).

9. The gantry-type submerged arc welding machine for square steel processing according to claim 8, characterized in that, A first gear (720) is coaxially mounted on the rotating shaft (714). A second gear (721) meshes with the first gear (720) on its side. A third gear (722) meshes with the second gear (721) on its side. A drive shaft is coaxially mounted on the third gear (722). A second drive motor (723) is mounted on the drive shaft. The drive shaft is connected to the drive end of the second drive motor (723). The second gear (721) and the third gear (722) are both rotatably mounted on the partition (74).

10. The gantry-type submerged arc welding machine for square steel processing according to claim 1, characterized in that, The recycling compartment (4) has a hatch (13) on its side for the recycling box (6) to pass through.

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