Welding equipment for building steel

Abstract

The invention relates to the technical field of building steel, discloses building steel welding equipment and solves the problems that existing building steel welding equipment mostly depends on manual cleaning or single mechanical scraping and is low in efficiency. The steel pipe welding device comprises the workbench and the welding head reciprocating above the workbench, a bidirectional motor drives a screw to enable a moving block to slide, a side plate and a sliding plate are driven to achieve steel pipe limiting and fixing, a unique lifting assembly can lift the steel pipe, friction between the steel pipe and a conveying belt is avoided, and the welding stability and the steel pipe surface integrity are ensured; the slag removal structure drives a scraper knife, an air pipe and a cleaning brush through a stepping motor, an electric push rod and other parts to carry out slag removal, air blowing impurity removal and impurity cleaning on the welding seam, the surface quality of the welding seam is remarkably improved, and good conditions are created for subsequent machining and using.

Description

Technical Field

[0001] The present invention relates to the technical field of construction steel, and specifically relates to a welding device for construction steel. Background Technique

[0002] Construction steel pipes are commonly used structural materials in construction projects. Their longitudinal welds are crucial for the overall performance of the steel pipes and construction safety. Currently, the quality of traditional manual welding depends on the welder's skill level and is prone to defects. Early automated welding devices had insufficient adaptability and unstable welding quality. With the rapid development of the construction industry, there is an urgent need for advanced, efficient, and highly adaptable welding devices to improve the welding quality and production efficiency of the longitudinal welds of construction steel pipes.

[0003] The slag removal method of existing welding devices for construction steel may only rely on simple manual cleaning or single mechanical scraping, and it is impossible to realize the combined use of a shovel, an air pipe, and a cleaning brush. It is difficult to completely remove the slag and impurities on the weld. This not only results in poor surface quality of the weld but may also cause problems during subsequent processing and use, such as affecting the coating adhesion and reducing the corrosion resistance of the steel pipe.

[0004] In view of the above problems, an innovative design is carried out on the basis of the original welding device for construction steel. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device for construction steel. By using this device for work, the problem that existing welding devices for construction steel mostly rely on manual cleaning or single mechanical scraping and have low efficiency is solved.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A welding device for construction steel, including a workbench and a welding head that reciprocates above the workbench. A conveyor belt is arranged in the middle of the workbench for transporting steel. A frame is arranged at the upper end of the workbench. A moving component is arranged on one side of the frame and is threadedly connected to the welding head. Dust removal structures and slag removal structures are respectively arranged on both sides of the frame. An air cooling structure is also arranged on one side of the frame. A fixing structure is arranged in the middle of the workbench; The slag removal structure includes a fixed shell arranged on one side of the frame. A linkage block is slidably connected inside the fixed shell. A long shell is arranged on one side of the linkage block. An electric push rod is arranged inside the long shell. A second rack is arranged at the output end of the electric push rod. A sector rack is rotatably connected to one side of the long shell. The second rack is meshed with the sector rack. A top block is arranged on one side of the sector rack. A shovel is arranged at the bottom end of the top block; The fixing structure includes a first screw rod rotatably connected inside the workbench. There are two groups of the first screw rods symmetrically distributed with respect to the workbench. The fixing structure further includes a moving block slidably connected inside the workbench. The first screw rod is threadedly connected to the moving block. A side plate is provided at the top of the moving block. A sliding plate is slidably connected to the outside of the side plate. A limiting plate is provided at the top of the sliding plate. There are two groups of the limiting plates symmetrically distributed with respect to the workbench. The two groups of limiting plates move in opposite directions, and the two groups of limiting plates are used to fix the steel pipe.

[0007] Further, a moving component is provided inside the frame. The moving component includes a servo motor provided on one side of the frame. The output end of the servo motor extends inside the frame. A first lead screw is provided at the output end of the servo motor. A rectangular block is also slidably connected inside the frame. The rectangular block is threadedly connected to the first lead screw. A cylinder is provided on one side of the rectangular block. The cylinder is fixedly connected to the welding head.

[0008] Further, the air-cooling structure includes a support plate provided on one side of the frame. A blower is fixedly installed at the top of the support plate. An air duct is provided at the output end of the blower. The air duct extends inside the frame. An air cylinder is provided at one end of the air duct. Air heads are connected to the surface of the air cylinder. Three groups of the air heads are equally spaced.

[0009] Further, openings are provided on both sides of the frame. An electric push door is provided on one side of the opening. The air head is located in the opening on the right side of the frame. The air head is used to quickly cool the weld seam of the welded steel pipe.

[0010] Further, a stepping motor is fixedly installed inside the fixed shell. A second screw rod is provided at the output end of the stepping motor. One end of the second screw rod is rotatably connected to the inner wall of the fixed shell. The second screw rod is threadedly connected to the linkage block. The second rack is slidably connected to the long shell. A rotating shaft is rotatably connected to one side of the cross plate. The rotating shaft is connected to the middle of the sector rack.

[0011] Further, an extension plate is also provided on one side of the top block. An air pipe and a cleaning brush are provided on one side of the extension plate. The air pipe is located between the shovel and the cleaning brush. One end of the air pipe passes through the extension plate. One end of the air pipe is connected to the air cylinder.

[0012] Further, the fixing structure further includes a groove opened inside the workbench. A bidirectional motor is fixedly installed inside the groove. The bidirectional motor is connected to the first screw rod. Sliders are provided on both sides of the side plate. Sliding grooves are correspondingly opened inside the sliding plate. The sliders are slidably connected to the sliding grooves.

[0013] Further, a lifting component is provided on one side of the limiting plate. The lifting component includes a notch opened on the surface of the limiting plate. Pulling springs are symmetrically provided on one side of the limiting plate. A sleeve ring is provided at one end of the pulling spring. A twist barrel is fixedly provided on one side of the sleeve ring.

[0014] Further, a rotating rod is rotatably connected inside the notch. One end of the rotating rod is provided with a twist rod, and the twist rod is threadedly connected to a twist barrel. A gear is arranged on the surface of the rotating rod, and a first rack is fixedly connected inside the notch, and the first rack is meshed with the gear.

[0015] Further, a dust removal structure is arranged on one side of the workbench. The dust removal structure includes a fixing plate arranged at the top of the workbench. A hydraulic rod is arranged on one side of the fixing plate. The output end of the hydraulic rod is provided with a connecting plate. A clamping block is arranged on one side of the connecting plate. An airbag is arranged on one side of the clamping block. A dust blowing head is connected to the top of the airbag. Four groups of dust blowing heads are evenly distributed at equal intervals. The two outer groups of dust blowing heads are in a shape of an eight. A spring is arranged inside the airbag. An air inlet pipe is correspondingly connected to the bottom end of the airbag. A valve body is arranged on the outer side of the air inlet pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: A welding device for building steel proposed by the present invention. Most of the existing welding devices for building steel rely on manual cleaning or single mechanical scraping, with low efficiency. The present invention includes a workbench and a welding head reciprocating above the workbench. The steel pipe is transported to the symmetrically distributed dust removal structures through a conveyor belt. The hydraulic rod is used to drive the clamping block to squeeze the airbag, so that the dust blowing head blows dust on the weld, effectively removing dust and impurities, improving the subsequent welding quality, ensuring the firmness and stability of the weld. In the fixing link, the bidirectional motor drives the screw rod to make the moving block slide, driving the side plate and the sliding plate to realize the limit fixation of the steel pipe. And the unique lifting component can lift the steel pipe to avoid friction with the conveyor belt, ensuring welding stability and the integrity of the steel pipe surface. During welding, the servo motor and the cylinder cooperate to drive the welding head to work, completing high-quality longitudinal seam welding. After welding, the blower quickly cools the weld through the air duct, the air cylinder and the air head, promoting the rapid solidification of the weld structure, refining the crystal grains, improving the strength, hardness of the weld and reducing deformation, ensuring dimensional accuracy. Finally, the slag removal structure drives the shovel, the air pipe and the cleaning brush to remove slag, blow and clean impurities on the weld through components such as the stepping motor and the electric push rod, significantly improving the surface quality of the weld and creating good conditions for subsequent processing and use. Description of the Drawings

[0017] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention; Figure 2 is the three-dimensional structure schematic diagram of the moving component of the present invention; Figure 3 is the three-dimensional structure schematic diagram of the dust removal structure of the present invention; Figure 4 is the three-dimensional structure schematic diagram of the cross-section of the airbag of the present invention; Figure 5 is the three-dimensional structure schematic diagram of the fixing structure of the present invention; Figure 6It is a three-dimensional structure schematic diagram of the lifting component of the present invention; Figure 7 It is a three-dimensional structure schematic diagram of the air-cooling structure of the present invention; Figure 8 It is a three-dimensional structure schematic diagram of the slag removal structure of the present invention.

[0018] In the figure: 1, workbench; 2, conveyor belt; 3, frame; 4, moving component; 41, servo motor; 42, first lead screw; 43, rectangular block; 5, cylinder; 6, air-cooling structure; 61, support plate; 62, blower; 63, air duct; 64, air cylinder; 65, air head; 7, dust removal structure; 71, fixing plate; 72, hydraulic rod; 73, connecting plate; 74, clamping block; 75, air bag; 76, dust blowing head; 77, spring; 78, air inlet pipe; 79, valve body; 8, fixing structure; 81, groove; 82, bidirectional motor; 83, first screw; 84, moving block; 85, side plate; 86, slider; 87, sliding plate; 88, sliding groove; 89, lifting component; 891, notch; 892, twist barrel; 893, collar; 894, tension spring; 895, twist rod; 896, rotating rod; 897, gear; 898, first rack; 810, limiting plate; 9, slag removal structure; 91, fixed shell; 92, stepping motor; 93, second screw; 94, linkage block; 95, long shell; 96, electric push rod; 97, second rack; 98, sector rack; 99, rotating shaft; 910, cross plate; 911, top block; 912, shovel; 913, extension plate; 914, air pipe; 915, cleaning brush; 10, welding head; 11, electric push door. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0021] Combined with Figure 1 and Figures 5 - 8, a welding device for construction steel, comprising a workbench 1 and a welding head 10 reciprocating above the workbench 1. A conveyor belt 2 is arranged in the middle of the workbench 1 for transporting steel. A frame 3 is arranged at the upper end of the workbench 1. A moving component 4 is arranged on one side of the frame 3, and the moving component 4 is threadedly connected to the welding head 10. Dust removal structures 7 and slag removal structures 9 are respectively arranged on both sides of the frame 3. An air cooling structure 6 is also arranged on one side of the frame 3. A fixing structure 8 is arranged in the middle of the workbench 1.

[0022] The present invention will be further described below in conjunction with embodiments.

[0023] Please refer to Figures 1 - 8 , The slag removal structure 9 includes a fixed shell 91 arranged on one side of the frame 3. A linkage block 94 is slidably connected inside the fixed shell 91. A long shell 95 is arranged on one side of the linkage block 94. An electric push rod 96 is arranged inside the long shell 95. The output end of the electric push rod 96 is provided with a second rack 97. A sector rack 98 is rotatably connected to one side of the long shell 95. The second rack 97 is meshed and connected with the sector rack 98. A top block 911 is arranged on one side of the sector rack 98. A shovel 912 is arranged at the bottom end of the top block 911. A stepping motor 92 is fixedly installed inside the fixed shell 91. The output end of the stepping motor 92 is provided with a second screw rod 93. One end of the second screw rod 93 is rotatably connected to the inner wall of the fixed shell 91. The second screw rod 93 is threadedly connected to the linkage block 94. The second rack 97 is slidably connected to the long shell 95. A rotating shaft 99 is rotatably connected to one side of the cross plate 910. The rotating shaft 99 is connected to the middle of the sector rack 98. An extension plate 913 is also arranged on one side of the top block 911. An air pipe 914 and a cleaning brush 915 are arranged on one side of the extension plate 913. The air pipe 914 is located between the shovel 912 and the cleaning brush 915. One end of the air pipe 914 passes through the extension plate 913. One end of the air pipe 914 is connected to the air cylinder 64. A stepping motor 92 is fixedly installed inside the fixed shell 91. The output end of the stepping motor 92 is provided with a second screw rod 93. One end of the second screw rod 93 is rotatably connected to the inner wall of the fixed shell 91. The second screw rod 93 is threadedly connected to the linkage block 94. The second rack 97 is slidably connected to the long shell 95. A rotating shaft 99 is rotatably connected to one side of the cross plate 910. The rotating shaft 99 is connected to the middle of the sector rack 98. An extension plate 913 is also arranged on one side of the top block 911. An air pipe 914 and a cleaning brush 915 are arranged on one side of the extension plate 913. The air pipe 914 is located between the shovel 912 and the cleaning brush 915. One end of the air pipe 914 passes through the extension plate 913. One end of the air pipe 914 is connected to the air cylinder 64, significantly improving the surface quality of the weld seam and creating good conditions for subsequent processing and use.

[0024] The fixing structure 8 includes a first screw rod 83 rotatably connected inside the workbench 1. There are two groups of the first screw rod 83 symmetrically distributed with respect to the workbench 1. The fixing structure 8 further includes a moving block 84 slidably connected inside the workbench 1. The first screw rod 83 is threadedly connected to the moving block 84. A side plate 85 is provided at the top of the moving block 84. A sliding plate 87 is slidably connected to the outside of the side plate 85. A limiting plate 810 is provided at the top of the sliding plate 87. There are two groups of the limiting plates 810 symmetrically distributed with respect to the workbench 1. The two groups of limiting plates 810 move in opposite directions and are used to fix the steel pipe.

[0025] A moving component 4 is provided inside the frame 3. The moving component 4 includes a servo motor 41 provided on one side of the frame 3. The output end of the servo motor 41 extends inside the frame 3. A first lead screw 42 is provided at the output end of the servo motor 41. A rectangular block 43 is also slidably connected inside the frame 3. The rectangular block 43 is threadedly connected to the first lead screw 42. A cylinder 5 is provided on one side of the rectangular block 43. The cylinder 5 is fixedly connected to the welding head 10, which is convenient for movement.

[0026] The air-cooling structure 6 includes a support plate 61 provided on one side of the frame 3. A blower 62 is fixedly installed at the top of the support plate 61. An air duct 63 is provided at the output end of the blower 62. The air duct 63 extends inside the frame 3. An air cylinder 64 is provided at one end of the air duct 63. Three groups of air nozzles 65 are connected to the surface of the air cylinder 64 at equal intervals to quickly cool the weld seam.

[0027] Openings are provided on both sides of the frame 3. An electric push door 11 is provided on one side of the opening. The air nozzle 65 is located at the opening on the right side of the frame 3 and is used to quickly cool the weld seam of the welded steel pipe.

[0028] The fixing structure 8 further includes a groove 81 opened inside the workbench 1. A bidirectional motor 82 is fixedly installed inside the groove 81. The bidirectional motor 82 is connected to the first screw rod 83. Sliders 86 are provided on both sides of the side plate 85. Corresponding chutes 88 are opened inside the sliding plate 87. The sliders 86 are slidably connected to the chutes 88. A lifting component 89 is provided on one side of the limiting plate 810. The lifting component 89 includes a notch 891 opened on the surface of the limiting plate 810. Two tension springs 894 are symmetrically provided on one side of the limiting plate 810. A collar 893 is provided at one end of the tension spring 894. A twist barrel 892 is fixedly provided on one side of the collar 893. A rotating rod 896 is rotatably connected inside the notch 891. A twist rod 895 is provided at one end of the rotating rod 896. The twist rod 895 is threadedly connected to the twist barrel 892. A gear 897 is provided on the surface of the rotating rod 896. A first rack 898 is fixedly connected inside the notch 891. The first rack 898 is meshed with the gear 897, which avoids the friction between the steel pipe and the conveyor belt 2 during the welding process and ensures the stability of welding and the integrity of the steel pipe surface.

[0029] A dust removal structure 7 is provided on one side of the workbench 1. The dust removal structure 7 includes a fixing plate 71 provided at the top of the workbench 1. A hydraulic rod 72 is provided on one side of the fixing plate 71. The output end of the hydraulic rod 72 is provided with a connecting plate 73. A clamping block 74 is provided on one side of the connecting plate 73. An airbag 75 is provided on one side of the clamping block 74. A dust blowing head 76 is connected to the top of the airbag 75. Four groups of dust blowing heads 76 are equally spaced. The two outer groups of dust blowing heads 76 are in a spread shape. A spring 77 is provided inside the airbag 75. An air inlet pipe 78 is correspondingly connected to the bottom end of the airbag 75. A valve body 79 is provided on the outer side of the air inlet pipe 78, effectively removing dust and impurities and improving the quality of subsequent welding.

[0030] Specifically, start the conveyor belt 2 to drive it intermittently, transport the steel pipe to the dust removal structure 7 and stop. At this time, the hydraulic rod 72 fixed on one side of the fixing plate 71 is started, and its output end drives the clamping block 74 to move towards the steel pipe until the clamping block 74 contacts the surface of the steel pipe. As the hydraulic rod 72 continues to push the connecting plate 73 closer to the steel pipe, the connecting plate 73 squeezes the airbag 75, causing the gas in the airbag 75 to blow the weld of the steel pipe through multiple dust blowing heads 76. The spring 77 inside the dust blowing head 76 is compressed and stores energy during this process. At the same time, the valve body 79 at the bottom end of the airbag 75 closes, and the air inlet pipe 78 stops admitting air. When the connecting plate 73 no longer squeezes the airbag 75, the clamping block 74 moves away from the surface of the steel pipe. The airbag 75 relies on the elastic force of the internal spring 77 and the opened valve body 79 to intake air through the air inlet pipe 78 for replenishment, preparing for the next operation. Since the dust removal structure 7 is symmetrically distributed on both sides of the steel pipe, the dust blowing heads 76 can comprehensively clean the weld of the steel pipe, effectively removing dust and impurities, improving the quality of subsequent welding, and ensuring the firmness and stability of the weld.

[0031] Next, the electric push door 11 on the side of the frame 3 close to the dust removal structure 7 is opened, and the conveyor belt 2 is started again. The steel pipe enters the welding area through the opening of the frame 3 and then stops. Immediately, the bidirectional motor 82 fixed in the groove 81 is started. The bidirectional motor 82 drives the screw rod 83 to rotate. The screw rod 83 is threadedly connected to the moving block 84, so that the two groups of moving blocks 84 slide in the groove 81 and drive the side plates 85 at the top to move towards the steel pipe respectively. The side plate 85 pushes the sliding plate 87 which is slidably connected at the top to move in the reverse direction. Finally, the sliding plate 87 drives the limiting plate 810 to limit and fix the steel pipe. Since the collar 893 protrudes from the limiting plate 810, the steel pipe first squeezes the twist barrel 892. The twist barrel 892 is threadedly connected to the twist rod 895. When being squeezed, the twist barrel 892 drives the tension spring 894 to be squeezed and store energy. Furthermore, the twist rod 895 drives the rotating rod 896 to rotate. The rotating rod 896 meshes with the gear 897. The gear 897 slides downward in the notch 891, driving the side plate 85 at the bottom to move downward. The side plate 85 slides in the chute 88 of the sliding plate 87 through the sliders 86 on both sides, lifting the steel pipe clamped by the two groups of limiting plates 810 to a certain height, avoiding the friction between the steel pipe and the conveyor belt 2 during the welding process, and ensuring the stability of welding and the integrity of the steel pipe surface.

[0032] Subsequently, the servo motor 41 on one side of the frame 3 is started. The output end of the servo motor drives the lead screw 42 to rotate. The lead screw 42 is threadedly connected to the rectangular block 43. The rectangular block 43 slides in the frame 3 and drives the cylinder 5 to move reciprocally. The cylinder 5 is started, and the welding head 10 at its output end moves downward to weld the longitudinal seam of the steel pipe. After the welding is completed, the fixing structure 8 releases the steel material, and the conveyor belt 2 is started again. At the same time, the electric push door 11 on the other side of the frame 3 is opened. The steel pipe passes through this opening through the conveyor belt 2. At this time, the blower 62 fixed by the support plate 61 on one side of the frame 3 is started. The blower 62 conveys the air to the air duct 63, and then the air duct 63 transmits it to the air cylinder 64, and the air head 65 connected to the surface of the air cylinder 64 quickly cools the weld seam of the steel pipe passing through the opening. The rapid air cooling can quickly reduce the temperature of the weld seam, enable the weld seam structure to solidify quickly, refine the grains, improve the strength and hardness of the weld seam, and at the same time reduce the welding deformation and ensure the dimensional accuracy of the steel pipe.

[0033] Finally, with the transportation of the conveyor belt 2, the steel pipe is sent below the slag removal structure 9. The stepping motor 92 in the fixed housing 91 is started to drive the second screw 93 to rotate. The second screw 93 is threadedly connected to the linkage block 94, causing the linkage block 94 to slide within the fixed housing 91 and drive the long housing 95 to move. At the same time, the electric push rod 96 fixedly installed within the long housing 95 is started, and the electric push rod 96 drives the second rack 97 to reciprocate. The second rack 97 meshes with the sector rack 98. The sector rack 98 is rotationally connected to the cross plate 910 through the rotating shaft 99, and the cross plate 910 is also fixed to the long housing 95. Therefore, the sector rack 98 drives the top block 911 to swing, and the top block 911 further drives the slag shovel 912 to remove slag from the weld. In addition, the extension plate 913 on one side of the top block 911 drives the connected air pipe 914 to swing. One end of the air pipe 914 is connected to the air duct 63, which can perform air blowing to remove impurities from the weld. The extension plate 913 also drives the cleaning brush 915 to swing to clean the impurities remaining on the weld. Through a series of operations such as slag removal, air blowing to remove impurities, and cleaning impurities, the slag and impurities remaining on the weld after welding are effectively removed, improving the surface quality of the weld and providing better conditions for subsequent processing and use.

[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for construction steel, comprising a workbench and a welding head that reciprocates above the workbench, characterized in that: A conveyor belt is arranged in the middle of the workbench. The conveyor belt is used to transport steel. A frame is arranged at the upper end of the workbench. A moving component is arranged on one side of the frame. The moving component is threadedly connected to the welding head. Dust removal structures and slag removal structures are respectively arranged on both sides of the frame. An air cooling structure is also arranged on one side of the frame. A fixing structure is arranged in the middle of the workbench; The slag removal structure includes a fixed shell arranged on one side of the frame. A linkage block is slidably connected inside the fixed shell. A long shell is arranged on one side of the linkage block. An electric push rod is arranged inside the long shell. A second rack is arranged at the output end of the electric push rod. A sector rack is rotatably connected to one side of the long shell. The second rack is meshed with the sector rack. A top block is arranged on one side of the sector rack. A shovel is arranged at the bottom end of the top block; The fixing structure includes a first screw rod rotatably connected inside the workbench. There are two groups of the first screw rods symmetrically distributed with respect to the workbench. The fixing structure also includes a moving block slidably connected inside the workbench. The first screw rod is threadedly connected to the moving block. A side plate is arranged at the top end of the moving block. A sliding plate is slidably connected to the outside of the side plate. A limiting plate is arranged at the top end of the sliding plate. There are two groups of the limiting plates symmetrically distributed with respect to the workbench. The two groups of limiting plates move in opposite directions. The two groups of limiting plates are used to fix the steel pipe.

2. The welding equipment for construction steel according to claim 1, characterized in that: A moving component is arranged inside the frame. The moving component includes a servo motor arranged on one side of the frame. The output end of the servo motor extends into the frame. A first lead screw is arranged at the output end of the servo motor. A rectangular block is also slidably connected inside the frame. The rectangular block is threadedly connected to the first lead screw. A cylinder is arranged on one side of the rectangular block. The cylinder is fixedly connected to the welding head.

3. The welding equipment for construction steel according to claim 1, characterized in that: The air cooling structure includes a support plate arranged on one side of the frame. A blower is fixedly installed at the top end of the support plate. An air duct is arranged at the output end of the blower. The air duct extends into the frame. One end of the air duct is provided with an air cylinder. Air heads are connected to the surface of the air cylinder. Three groups of the air heads are evenly distributed.

4. The welding equipment for construction steel according to claim 1, characterized in that: Openings are formed on both sides of the frame. An electric push door is arranged on one side of the opening. The air head is located in the opening on the right side of the frame. The air head is used to quickly cool the weld of the welded steel pipe.

5. The welding equipment for construction steel according to claim 1, characterized in that: A stepping motor is fixedly installed inside the fixed shell. A second screw rod is arranged at the output end of the stepping motor. One end of the second screw rod is rotatably connected to the inner wall of the fixed shell. The second screw rod is threadedly connected to the linkage block. The second rack is slidably connected to the long shell. A rotating shaft is rotatably connected to one side of the cross plate. The rotating shaft is connected to the middle of the sector rack.

6. The welding equipment for construction steel according to claim 1, characterized in that: An extension plate is also arranged on one side of the top block. An air pipe and a cleaning brush are arranged on one side of the extension plate. The air pipe is located between the shovel and the cleaning brush. One end of the air pipe passes through the extension plate. One end of the air pipe is connected to the air cylinder.

7. The welding equipment for construction steel according to claim 1, characterized in that: The fixing structure also includes a groove formed inside the workbench. A bidirectional motor is fixedly installed inside the groove. The bidirectional motor is connected to the first screw rod. Sliders are arranged on both sides of the side plate. Corresponding chutes are formed inside the sliding plate. The sliders are slidably connected to the chutes.

8. The welding equipment for construction steel according to claim 1, characterized in that: A lifting component is arranged on one side of the limiting plate. The lifting component includes a notch formed on the surface of the limiting plate. Pulling springs are symmetrically arranged on one side of the limiting plate. One end of the pulling spring is provided with a collar. A twist barrel is fixedly arranged on one side of the collar.

9. The welding equipment for construction steel according to claim 8, characterized in that: A rotating rod is rotatably connected inside the notch. One end of the rotating rod is provided with a twist rod, and the twist rod is in threaded connection with a twist barrel. A gear is arranged on the surface of the rotating rod. A first rack is fixedly connected inside the notch, and the first rack is meshed with the gear.

10. The welding equipment for construction steel according to claim 1, characterized in that: A dust removal structure is arranged on one side of the workbench. The dust removal structure includes a fixing plate arranged at the top of the workbench. A hydraulic rod is arranged on one side of the fixing plate. The output end of the hydraulic rod is provided with a connecting plate. A clamping block is arranged on one side of the connecting plate. An airbag is arranged on one side of the clamping block. A dust blowing head is connected to the top of the airbag. Four groups of dust blowing heads are equally spaced. The two outer dust blowing heads are in an eight-shaped state. A spring is arranged inside the airbag. An air inlet pipe is correspondingly connected to the bottom end of the airbag. A valve body is arranged on the outer side of the air inlet pipe.

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