Efficient submerged-arc welding equipment for large-section H-shaped steel

Abstract

The invention relates to the technical field of welding equipment, and particularly discloses large-section H-shaped steel efficient submerged-arc welding equipment which comprises a placing frame and a welding device arranged at the placing frame, a positioning device is arranged on the placing frame, and the positioning device comprises two positioning mechanisms oppositely arranged in the vertical direction; the positioning mechanism comprises a mounting plate arranged on the placing frame and a plurality of positioning plates used for positioning the H-shaped steel, the positioning plates are in sliding fit with the mounting plate in the width direction of the mounting plate, each positioning plate comprises a vertical positioning part and a transverse positioning part, the transverse positioning parts are in sliding fit with the mounting plate, and the vertical positioning parts and the transverse positioning parts are in sliding fit with the mounting plate. The vertical positioning part is arranged on the transverse positioning part, the vertical positioning part and the transverse positioning part are vertically arranged, and the vertical positioning part and the transverse positioning part are used for abutting and positioning the joint between the vertical plate and the transverse plate; the efficient submerged-arc welding equipment for the large-section H-shaped steel has the effect that the welding machining quality of the H-shaped steel can be improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a high-efficiency submerged arc welding equipment for large cross-section H-beams. Background Technology

[0002] H-beams are steel sections with an H-shaped cross-section, also known as universal steel beams, wide-flange (side) I-beams, or parallel-flange I-beams. H-beams are made of ordinary carbon steel and low-alloy structural steel. They have wide flanges and no slope on the inner sides of the legs, facilitating combination and connection with other components. With a large section modulus and good properties, they are considered economical steel profiles and are ideal load-bearing structural steel for buildings. They possess advantages such as strong bending resistance in all directions, simple construction, cost savings, and lightweight structure, and are widely used. In multi-story and high-rise steel structures, H-beams often account for more than 40% of the total steel consumption. H-beams are divided into two categories: hot-rolled H-beams and welded H-beams.

[0003] During the production and processing of H-beams, submerged arc welding machines are required for welding. Submerged arc welding machines are welding machines that use an electric arc burning under a layer of flux. Their inherent advantages, such as stable welding quality, high welding productivity, no arc light, and very little smoke and dust, make them the main welding machines used in the fabrication of pressure vessels, pipe sections, and box-beam and column steel structures.

[0004] Chinese patent document CN214815594U discloses a trackless submerged arc welding machine for curved H-shaped steel components, including a movable base and a material box. The material box is mounted on the movable base via a bracket. A first housing is installed on the top of the material box, and both the top and bottom of the first housing are open. A second housing is installed inside the first housing, and the top of the second housing is open. A screen is installed at the bottom of the second housing. Springs are symmetrically installed on the outer wall of the second housing, and a circular plate is fixedly connected below the springs. A servo motor is installed on the outer wall of the first housing, and the power output end of the servo motor extends to the inside of the first housing. A support rod is installed on the power output end of the servo motor. The end is rotatably connected to a roller; the bottom of the spring is provided with a support, and the support is fixedly connected to the inner wall of the second housing; two sets of springs are symmetrically arranged, and each set of springs has two springs; the top of the first housing is connected to a cover plate by a hinge; the outer wall of the circular plate is provided with a groove, and the groove is adapted to the roller; the outer wall of the roller is covered with a protective pad, which includes a foam cotton layer and a rubber skin layer, and the foam cotton layer and the rubber skin layer are bonded together; by setting a protective pad on the outer wall of the roller, with the rubber skin layer located on the outer end face of the protective pad and the foam cotton layer located on the inner end face of the protective pad, when the roller comes into contact with the circular plate, the protective pad can play a good buffering role, and at the same time can effectively reduce the noise when the roller comes into contact with the circular plate.

[0005] In operation, a suitable amount of solder is manually added to the inside of the first housing, and the solder falls into the second housing. A screen supports the solder falling into the second housing, and a servo motor, powered by a servo motor, drives a support rod in a circular motion. When the roller at the end of the support rod contacts the outer wall of the circular plate, the second housing vibrates under the elastic force of the spring. Under this vibration, solder of suitable particle size is sieved through the screen and falls into the material box, while larger solder particles are retained by the screen. This trackless submerged arc welding machine for curved H-beams effectively solves the problem of large solder particles clogging the welding pipe during the feeding process in existing trackless submerged arc welding machines for curved H-beams, by incorporating a second housing, screen, spring, servo motor, support rod, and roller.

[0006] In the aforementioned technology, when welding H-beams using a welding machine, the H-beams are typically placed on a placement frame for welding. The H-beams are usually placed at an angle, with the bottom of the vertical plates and the two opposite sides of the vertical plates abutting against the placement frame. Simultaneously, the bottom of the horizontal plates is supported by the placement frame. To facilitate the placement of the vertical and horizontal plates onto the frame, gaps usually exist after placement. During welding, forces are applied to the H-beams, affecting the perpendicularity between the horizontal and vertical plates, resulting in poor welding quality. Summary of the Invention

[0007] This invention provides a high-efficiency submerged arc welding device for large-section H-beams, aiming to solve the technical problem in the prior art where welding H-beams using a welding machine typically involves placing the H-beams on a placement frame for welding. The H-beams are usually placed at an angle, with the bottom of the vertical plates and the two opposite sides of the vertical plates abutting against the placement frame, while the bottom of the horizontal plates is supported by the placement frame. To facilitate the placement of the vertical and horizontal plates onto the placement frame, gaps usually exist after placement. During welding, forces are applied to the H-beams, affecting the perpendicularity between the horizontal and vertical plates and resulting in poor welding quality.

[0008] This invention discloses a high-efficiency submerged arc welding device for large-section H-beams, comprising a placement frame and a welding device disposed on the placement frame. The placement frame is equipped with a positioning device, which includes two positioning mechanisms arranged vertically opposite each other. Each positioning mechanism includes a mounting plate disposed on the placement frame and multiple positioning plates for positioning the H-beams. The positioning plates slide against the mounting plate along its width direction. Each positioning plate includes a vertical positioning part and a horizontal positioning part. The horizontal positioning part slides against the mounting plate, and the vertical positioning part is disposed on the horizontal positioning part. The vertical and horizontal positioning parts are perpendicularly arranged and used for abutment positioning at the connection between the vertical and horizontal plates.

[0009] Beneficial effects: By setting up the positioning device, when welding H-beams is required, the H-beams are first placed on the placement frame. Then, the two positioning mechanisms arranged vertically opposite each other are adjusted. During adjustment, the positioning plates are first slid, so that the positioning plates slide towards the connection between the vertical and horizontal plates. Multiple positioning plates are slid and adjusted in sequence. After the positioning plates are slid and adjusted, the surface of the horizontal positioning part can abut against the horizontal plate, and the surface of the vertical positioning part can abut against the vertical plate, thereby realizing the positioning of the horizontal and vertical plates of the H-beams, so that the horizontal and vertical plates can be set vertically. Subsequently, when welding the horizontal and vertical plates, the welding device slides along the length of the placement frame to realize the welding of the H-beams, which can improve the welding quality of H-beams.

[0010] Preferably, the mounting plate is provided with an adjustment device, which includes a slider for driving the lateral positioning part to slide and an adjustment component for driving two adjacent sliders to move closer or further apart.

[0011] Beneficial effects: By setting up the adjustment device, when the adjustment component is working, it can drive the two sliders to slide and adjust. When the sliders slide, they can drive the horizontal positioning part to slide, thereby realizing the sliding adjustment of the positioning plate, which is convenient to operate.

[0012] Preferably, the adjusting assembly includes a bidirectional screw threaded onto the slider, a worm gear mounted on the bidirectional screw, and a worm rotatably mounted on the mounting plate, wherein the worm meshes with the worm gear.

[0013] Beneficial effects: When the worm rotates, it drives the worm wheel to rotate. When the worm wheel rotates, it drives the double-headed screw to rotate. When the double-headed screw rotates, it enables the sliding adjustment of the slider.

[0014] Preferably, two positioning mechanisms are provided at intervals along the length of the placement frame, and each mounting plate slides and engages with the placement frame along the length of the placement frame.

[0015] Beneficial effects: With two positioning mechanisms, the H-beams can be positioned at both ends during welding of large cross-section H-beams, resulting in more stable positioning and improved welding quality.

[0016] Preferably, a linkage rod is installed on the worm gear, and a telescopic sleeve is provided between the two linkage rods for sliding towards or away from each other, so that the two linkage rods can rotate synchronously.

[0017] Beneficial effects: By setting up the linkage rod and telescopic sleeve rod, when one linkage rod rotates, it can drive the telescopic sleeve rod to rotate, which in turn drives the other linkage rod to rotate. This enables the synchronous adjustment of the two sets of positioning plates along the length of the placement frame. At the same time, when the two sets of mounting frames slide along the length of the placement frame, the telescopic sleeve rod slides to adjust, and the two sets of mounting frames make way, which facilitates the welding device to weld the two ends of the H-beam.

[0018] Preferably, a telescopic plate is provided between the lateral positioning part and the slider to drive the lateral positioning part to slide vertically up and down.

[0019] Beneficial effects: By setting up the telescopic plate, the vertical position of the transverse positioning part can be adjusted, thereby adapting to the welding of H-beams of various sizes and improving the applicability of the equipment.

[0020] Preferably, a slide rail is provided on one mounting plate along the length of the placement rack, and another mounting plate along the length of the placement rack is slidably engaged with the slide rail.

[0021] Beneficial effects: The sliding rail design allows the mounting plate to slide and adjust along the rail, and the sliding adjustment of the mounting plate is more stable.

[0022] Preferably, the placement rack is provided with a guiding device, which includes a first guiding component that slides along the length of the placement rack, a sliding frame that is detachably connected to the welding device, and a second guiding component for sliding the welding device along the length of the vertical plate.

[0023] Beneficial effects: By setting up the guiding device, when welding H-beams is required, the sliding frame is first connected to the welding device. Then, when the welding device moves along the length of the placement frame, it is guided by the first and second guiding components, so that the welding torch on the welding equipment can always be along the part to be welded on the H-beam, avoiding deviation during the movement of the welding device, thereby improving the welding quality of the H-beams.

[0024] Preferably, the second guide assembly includes a plurality of guide plates slidably fitted on the sliding frame along the width direction of the placement frame and guide wheels rotatably fitted on the guide plates, the plurality of guide wheels abutting against the two sides of the vertical plate in the width direction.

[0025] Beneficial effects: By setting up guide wheels and guide plates, the two guide plates can be slidably adjusted, which in turn drives the guide wheels to slide and adjust the distance between the two sets of guide wheels to accommodate vertical plates of different thicknesses and sizes. At the same time, when the welding device moves, it can drive the guide wheels to move on the side of the vertical plate, which can improve the moving efficiency of the welding device.

[0026] Preferably, the guide assembly includes a guide frame that is slidably fitted on the placement frame along the length direction of the placement frame and a telescopic rod disposed on the guide frame. The guide frame is connected to the mounting plate and is slidably fitted on the telescopic rod.

[0027] The beneficial effects of this invention are as follows: 1. In this invention, by setting up a positioning device, when welding H-beams is required, the H-beams are first placed on a placement frame. Then, the two positioning mechanisms arranged vertically opposite each other are adjusted. During adjustment, the positioning plates are first slid so that they slide towards the connection between the vertical and horizontal plates. Multiple positioning plates are slid and adjusted in sequence. After the positioning plates are slid and adjusted, the surface of the horizontal positioning part can abut against the horizontal plate, and the surface of the vertical positioning part can abut against the vertical plate, thereby realizing the positioning of the horizontal and vertical plates of the H-beams, so that the horizontal and vertical plates can be set vertically. Subsequently, when welding the horizontal and vertical plates, the welding device slides along the length direction of the placement frame to realize the welding of the H-beams, which can improve the welding quality of the H-beams.

[0028] 2. In this invention, by setting the adjustment device, when the adjustment component is working, it can drive the two sliders to slide and adjust. When the sliders slide, they can drive the horizontal positioning part to slide, thereby realizing the sliding adjustment of the positioning plate, which is convenient to operate.

[0029] 3. In this invention, by setting up a linkage rod and a telescopic sleeve rod, it is possible to achieve that when one linkage rod rotates, it can drive the telescopic sleeve rod to rotate, and then drive the other linkage rod to rotate, thereby realizing the synchronous adjustment of the two sets of positioning plates along the length direction of the placement frame. At the same time, when the telescopic sleeve rod is working, it can drive the two sets of mounting frames to slide and adjust along the length direction of the placement frame to make room, thereby facilitating the welding device to weld the two ends of the H-beam.

[0030] 4. In this invention, the vertical position of the transverse positioning part can be adjusted by setting the telescopic plate, thereby adapting to the welding of H-beams of various sizes and improving the applicability of the equipment.

[0031] 5. In this invention, by setting up a guiding device, when welding H-beams is required, the sliding frame is first connected to the welding device. Then, when the welding device moves along the length of the placement frame, it is guided by the first guiding component and the second guiding component, so that the welding torch on the welding equipment can always be along the part to be welded on the H-beam, avoiding deviation during the movement of the welding device, thereby improving the welding quality of the H-beams. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 This is a schematic diagram illustrating the structure of the welding apparatus of the present invention.

[0034] Figure 3 This is a schematic diagram of the positioning plate of the present invention.

[0035] Figure 4 This is a partial cross-sectional view illustrating the connection relationship between the slider and the bidirectional screw of the present invention.

[0036] Figure 5 This is a structural schematic diagram illustrating the connection relationship between the linkage rod and the telescopic sleeve rod according to the present invention.

[0037] Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0038] Figure 7 This is a structural schematic diagram illustrating the connection relationship between the guide wheel and the guide plate according to the present invention.

[0039] Figure 8 This is a partial cross-sectional view of the present invention illustrating the connection relationship between the elastic element and the guide wheel. Figure label: 1. Placement rack; 2. Welding device; 3. Positioning mechanism; 31. Mounting plate; 32. Positioning plate; 321. Vertical positioning part; 322. Horizontal positioning part; 323. Arc groove; 4. Adjustment device; 41. Slider; 42. Adjustment assembly; 421. Double-direction screw one; 422. Worm gear; 423. Worm; 5. Linkage rod; 6. Telescopic sleeve rod; 7. Telescopic plate; 8. Slide rail; 9. Guide device; 91. Guide assembly one; 911. Guide frame; 912. Telescopic rod; 92. Sliding frame; 93. Guide assembly two; 931. Guide plate; 932. Guide wheel; 10. Elastic element; 11. Sliding device; 111. Sliding block; 112. Double-direction screw two. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] Reference Figures 1-8 This invention discloses a high-efficiency submerged arc welding device for large-section H-beams, comprising a placement frame 1, a welding device 2 disposed on the placement frame 1, and a positioning device disposed on the placement frame 1. The placement frame 1 supports the H-beam, which is placed at an angle. The welding device 2 is a submerged arc welding carriage with a pair of fixed bearings on one side. The height of the welding torch on the submerged arc welding carriage is adjustable, and the torch can rotate horizontally. The welding device 2 can move on the side of the placement frame 1 away from the H-beam. The positioning device is used to position the horizontal and vertical plates of the H-beam. When welding the H-beam, it is first placed on the placement frame 1, then positioned by the positioning device to ensure the horizontal and vertical plates are perpendicular, and then the welding device 2 performs welding on the H-beam at the welding position.

[0042] Reference Figure 1 , Figure 3 and Figure 4 The positioning device includes two positioning mechanisms 3 arranged vertically opposite each other. Two positioning mechanisms 3 are spaced apart along the length of the placement frame 1. Each positioning mechanism 3 includes a mounting plate 31 mounted on the placement frame 1 and a mounting plate for positioning H. Multiple positioning plates 32 are used to position the steel profile. Each mounting plate 31 slides along the length of the mounting frame 1 and is fitted with the mounting frame 1. The positioning plate 32 slides along the width of the mounting plate 31 and is fitted with the mounting plate 31. The positioning plate 32 includes a vertical positioning part 321 and a horizontal positioning part 322. The horizontal positioning part 322 is set with an "L" shape and slides along the mounting plate 31. The vertical positioning part 321 is set with a rectangular structure and is integrally set on the horizontal positioning part 322. The vertical positioning part 321 and the horizontal positioning part 322 are set perpendicularly and are used to abut and position the connection between the vertical plate and the horizontal plate. An arc-shaped groove 323 is provided at the connection position of the vertical positioning part 321 and the horizontal positioning part 322. The opening of the arc-shaped groove 323 is set away from the horizontal positioning part 322. The arc-shaped groove 323 can make way for the weld seam between the horizontal plate and the vertical plate.

[0043] Reference Figure 4 , Figure 5 and Figure 6An adjustment device 4 is provided on the mounting plate 31. The adjustment device 4 is used to drive the two positioning plates 32 along the width direction of the placement frame 1 to slide and adjust. The adjustment device 4 includes a slider 41 for driving the transverse positioning part 322 to slide and an adjustment component 42 for driving two adjacent sliders 41 to move closer or further away from each other. The slider 41 has a T-shaped structure and a groove adapted to the slider 41 is provided on the mounting plate 31.

[0044] Reference Figure 4 , Figure 5 and Figure 6 The adjusting assembly 42 includes a bidirectional screw 421 threaded onto the slider 41, a worm gear 422 fixedly mounted on the bidirectional screw 421, and a worm 423 rotatably mounted on the mounting plate 31. The bidirectional screw 421 is rotatably mounted on the mounting plate 31, the worm 423 meshes with the worm gear 422, and the worm 423 is arranged along the length of the placement frame 1.

[0045] Reference Figure 4 , Figure 5 and Figure 6 A linkage rod 5 is fixedly installed on the worm gear 423. A telescopic sleeve rod 6 is provided between the two linkage rods 5 for sliding the two linkage rods 5 toward each other or away from each other. The two ends of the telescopic sleeve rod 6 are fixedly connected to the two linkage rods 5 respectively. An actuator (not shown in the figure) is installed between the two mounting plates 31 along the length direction of the placement frame 1. The actuator directly adopts a double piston rod hydraulic cylinder. The two hydraulic rods at both ends of the actuator are fixedly connected to the two mounting plates 31 respectively. When the actuator is working, it can drive the two mounting plates 31 to slide toward each other or away from each other, thereby adjusting the position of the two mounting plates 31.

[0046] Reference Figure 3 , Figure 4 and Figure 5 A telescopic plate 7 is provided between the transverse positioning part 322 and the slider 41 for driving the transverse positioning part 322 to slide vertically. The telescopic plate 7 includes a fixed part that is fixedly connected to the slider 41 and a telescopic part that slides vertically on the fixed part. The telescopic part is fixedly connected to the transverse positioning part 322, and a hydraulic cylinder for driving the telescopic part to slide and adjust is fixedly installed on the fixed part.

[0047] Reference Figure 4 , Figure 5 and Figure 6After the H-beam is placed on the placement rack 1, when the positioning plate 32 needs to be adjusted, the hydraulic cylinder is first activated to drive the telescopic part to slide and adjust, causing the horizontal positioning part 322 and the vertical positioning part 321 to slide vertically. When the surface of the horizontal positioning part 322 abuts against the horizontal plate, the hydraulic cylinder is closed. Then, the worm gear 423 is rotated, which drives the worm wheel 422 to rotate. When the worm wheel 422 rotates, it drives the double-direction screw 421 to rotate. At the same time, when the worm gear 423 rotates, it drives the two linkage rods 5 and the telescopic sleeve rod 6 to rotate. The two linkage rods 5 can rotate synchronously, which in turn drives another worm gear 423 to rotate along the length of the placement rack 1, driving the worm wheel 422 and the double-direction screw 421 to rotate. When the double-direction screw 421 rotates, it drives the two sliders 41 on it to slide. The two sliders 41 drive the telescopic plate 7 and the positioning plate 32 to slide in a direction away from each other, so that the vertical positioning part 32... The side of the H-beam 1 can abut against the vertical plate to position it, followed by welding. After welding, the hydraulic cylinder is activated to drive the telescopic part to slide and adjust, which in turn drives the horizontal positioning part 322 and the vertical positioning part 321 to slide and reset vertically. When the horizontal positioning part 322 is reset, the hydraulic cylinder is turned off. Then, the worm gear 423 is rotated, which drives the worm wheel 422 to rotate. When the worm wheel 422 rotates, it drives the bidirectional screw 421 to rotate. At the same time, when the worm gear 423 rotates, it drives the two linkage rods 5 and the telescopic sleeve 6 to rotate. The two linkage rods 5 can rotate synchronously, which in turn drives another worm gear 423 to rotate along the length of the placement frame 1, which drives the worm wheel 422 and the bidirectional screw 421 to rotate. When the bidirectional screw 421 rotates, it drives the two sliders 41 on it to slide. The two sliders 41 drive the telescopic plate 7 and the positioning plate 32 to slide and reset in a direction that brings them closer to each other.

[0048] Reference Figure 1 , Figure 3 and Figure 5 A slide rail 8 is fixedly installed on one mounting plate 31 along the length of the placement frame 1. The slide rail 8 has an "I" shaped structure. Another mounting plate 31 along the length of the placement frame 1 slides and fits into the slide rail 8. The two mounting plates 31 can slide and adjust along the length of the slide rail 8 to make room, thereby facilitating the welding device 2 to weld the two ends of the H-beam. Connecting plates for fixing and connecting multiple slide rails 8 are fixedly installed on multiple slide rails 8.

[0049] Reference Figure 1 , Figure 3 and Figure 5 When welding is required at both ends of the H-beam, Reference Figure 1 , Figure 7 and Figure 8The placement frame 1 is equipped with a guide device 9, which is used to guide and limit the movement of the welding device 2 along the length of the placement frame 1. The guide device 9 includes a guide component 91 that slides along the length of the placement frame 1, a sliding frame 92 that is detachably connected to the welding device 2, and a guide component 93 that slides the welding device 2 along the length of the vertical plate. The sliding frame 92 is located above the vertical plate and may be provided with a screw hole. The welding device 2 may be provided with a screw that is threaded into the screw hole. By screwing the screw into the screw hole, the welding device 2 can be fixed to the sliding frame 92. After the screw is screwed out of the screw hole, the welding device 2 can be unlocked from the sliding frame 92.

[0050] Among them, reference Figure 5 , Figure 7 and Figure 8 The guide assembly 91 includes a guide frame 911 that is slidably fitted on the placement frame 1 along the length direction of the placement frame 1 and a telescopic rod 912 disposed on the guide frame 911. The guide frame 911 is fixedly connected to the mounting plate 31, the telescopic rod 912 is installed between the two guide frames 911, and the sliding frame 92 is slidably fitted on the telescopic rod 912.

[0051] Reference Figure 5 , Figure 7 and Figure 8 The second guide assembly 93 includes multiple guide plates 931 that are slidably fitted onto a sliding frame 92 along the width direction of the placement frame 1, and guide wheels 932 that are rotatably fitted onto the guide plates 931. Two guide plates 931 are provided on the sliding frame 92 along the width direction of the placement frame 1, and the two guide plates 931 are symmetrically arranged. The bottom end of the guide plate 931 is provided with an arc-shaped surface. A support frame is installed inside the guide plate 931. The support frame is slidably fitted onto the guide plate 931 along the width direction of the placement frame 1. The guide wheels 932 are rotatably fitted onto the support frame, and the multiple guide wheels 932 abut against the two sides of the vertical plate in the width direction. An elastic element 10 is fixedly provided between the support frame and the guide plate 931. The elastic element 10 is directly a spring. One end of the elastic element 10 is fixedly connected to the support frame, and the other end is fixedly connected to the guide plate 931. When there is an uneven area on the vertical plate, the position movement of the guide wheels 932 can be adjusted by the elastic element 10.

[0052] Reference Figure 5 , Figure 7 and Figure 8A sliding device 11 is provided on the sliding frame 92. The sliding device 11 includes a sliding block 111 and a double-ended screw 112 that are slidably fitted on the sliding frame 92 along the width direction of the placement frame 1. The sliding block 111 is a T-shaped block. The sliding frame 92 has a groove that matches the sliding block 111. The sliding block 111 is fixedly connected to the guide plate 931. The double-ended screw 112 is rotatably fitted on the sliding frame 92 and threadedly fitted to the sliding block 111. Rotating the double-ended screw 112 can drive the sliding block 111 to slide. When the two sliding blocks 111 are close to each other, they can drive the two sets of guide wheels 932 to be close to each other, thereby abutting against the thinner vertical plate. When the two sliding blocks 111 are far apart, they can drive the two sets of guide wheels 932 to be far apart, thereby abutting against the thicker vertical plate.

[0053] The implementation principle of the high-efficiency submerged arc welding equipment for large cross-section H-beams of the present invention is as follows: when welding H-beams is required, the H-beams are first placed on the placement frame 1, and the vertical and horizontal plates of the H-beams are abutted by the placement frame 1. Then, the H-beams are positioned by the positioning device. During positioning, the hydraulic cylinder is first activated, which drives the telescopic part to slide and adjust, causing the horizontal positioning part 322 and the vertical positioning part 321 to slide vertically. When the surface of the horizontal positioning part 322 abuts against the horizontal plate, the hydraulic cylinder is closed. Then, the worm 423 is rotated, which drives the worm wheel 422 to rotate. When the worm wheel 422 rotates, it drives the bidirectional screw 421 to rotate. At the same time, when the worm 423 rotates, it drives the two linkage rods 5 and the telescopic sleeve 6 to rotate. The two linkage rods 5 can rotate synchronously, which in turn drives another worm 423 to rotate along the length of the placement frame 1, driving the worm wheel 422 and the bidirectional screw 421 to rotate. When the bidirectional screw 421 rotates, it drives the two sliders 41 on it to slide. The two sliders 41 drive the telescopic plate 7 and the positioning plate 32 to slide in a direction away from each other, so that the side of the vertical positioning part 321 can abut against the vertical plate, thereby achieving the positioning of the H-beam and keeping the horizontal and vertical plates perpendicular. Next, the welding device 2 is fixed to the sliding frame 92 by screwing the screw into the screw hole, and the double screw 112 is rotated, which can drive the sliding block 111 to slide. The two sliding blocks 111 move closer to each other, which can drive the two sets of guide wheels 932 to move closer to each other, so that the guide wheels 932 abut against the side of the vertical plate. Then the welding device 2 moves along the length of the vertical plate, and then the welding device 2 is used to weld the H-beam at the welding position. After welding, the double-ended screw 112 is rotated, which drives the sliding block 111 to slide. When the two sliding blocks 111 move away from each other, they also drive the two sets of guide wheels 932 to move away from each other, so that the guide wheels 932 no longer abut against the vertical plate. Then, the hydraulic cylinder is activated, which drives the telescopic part to slide and adjust, and drives the horizontal positioning part 322 and the vertical positioning part 321 to slide and reset vertically. After the horizontal positioning part 322 is reset, the hydraulic cylinder is closed. Then, the worm gear 423 is rotated, which drives the worm wheel 422 to rotate. When the worm gear 422 rotates, it drives the bidirectional screw 421 to rotate. At the same time, when the worm 423 rotates, it can drive the two linkage rods 5 and the telescopic sleeve rod 6 to rotate. The two linkage rods 5 can rotate synchronously, which in turn drives another worm 423 to rotate along the length of the placement frame 1, which in turn drives the worm gear 422 and the bidirectional screw 421 to rotate. When the bidirectional screw 421 rotates, it can drive the two sliders 41 on it to slide. The two sliders 41 drive the telescopic plate 7 and the positioning plate 32 to slide and reset in the direction of mutual approach. Then the welded H-beam is slid off the placement rack 1, thus completing the welding operation of the H-beam.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-efficiency submerged arc welding equipment for large cross-section H-beams, comprising a placement frame (1) and a welding device (2) disposed at the placement frame (1), characterized in that, The placement rack (1) is provided with a positioning device, which includes two positioning mechanisms (3) arranged opposite each other in the vertical direction. The positioning mechanism (3) includes a mounting plate (31) on the placement rack (1) and a plurality of positioning plates (32) for positioning the H-beam. The positioning plate (32) slides and engages with the mounting plate (31) along the width direction of the mounting plate (31). The positioning plate (32) includes a vertical positioning part (321) and a horizontal positioning part (322). The horizontal positioning part (322) slides and engages with the mounting plate (31). The vertical positioning part (321) is arranged on the horizontal positioning part (322). The vertical positioning part (321) and the horizontal positioning part (322) are arranged vertically and are used to abut and position the connection between the vertical plate and the horizontal plate.

2. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 1, characterized in that, An adjustment device (4) is provided on the mounting plate (31). The adjustment device (4) includes a slider (41) for driving the transverse positioning part (322) to slide and an adjustment component (42) for driving two adjacent sliders (41) to move closer to each other or further away from each other.

3. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 2, characterized in that, The adjustment assembly (42) includes a bidirectional screw (421) threaded onto the slider (41), a worm gear (422) mounted on the bidirectional screw (421), and a worm (423) rotatably mounted on the mounting plate (31), wherein the worm (423) meshes with the worm gear (422).

4. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 3, characterized in that, Two positioning mechanisms (3) are spaced apart along the length of the placement frame (1), and each mounting plate (31) slides and engages with the placement frame (1) along the length of the placement frame (1).

5. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 4, characterized in that, A linkage rod (5) is installed on the worm gear (423), and a telescopic sleeve rod (6) is provided between the two linkage rods (5) for sliding towards or away from each other. The two linkage rods (5) can rotate synchronously.

6. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 2, characterized in that, A telescopic plate (7) is provided between the lateral positioning part (322) and the slider (41) for driving the lateral positioning part (322) to slide vertically up and down.

7. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 1, characterized in that, A slide rail (8) is provided on one mounting plate (31) along the length direction of the placement rack (1), and another mounting plate (31) along the length direction of the placement rack (1) is slidably engaged with the slide rail (8).

8. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 1, characterized in that, The placement rack (1) is provided with a guide device (9), which includes a guide component one (91) that slides along the length of the placement rack (1), a sliding frame (92) that is detachably connected to the welding device (2), and a guide component two (93) for slidingly guiding the welding device (2) along the length of the vertical plate.

9. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 8, characterized in that, The second guide assembly (93) includes a plurality of guide plates (931) that are slidably fitted on the sliding frame (92) along the width direction of the placement frame (1) and guide wheels (932) that are rotatably fitted on the guide plates (931). The plurality of guide wheels (932) abut against the two sides of the vertical plate in the width direction.

10. The high-efficiency submerged arc welding equipment for large cross-section H-beams according to claim 9, characterized in that, The guide assembly (91) includes a guide frame (911) that is slidably fitted on the placement frame (1) along the length direction of the placement frame (1) and a telescopic rod (912) provided on the guide frame (911). The guide frame (911) is connected to the mounting plate (31), and the sliding frame (92) is slidably fitted on the telescopic rod (912).

Images