Building steel welding device for building construction

Abstract

The invention discloses a building steel welding device for building construction, relates to the technical field of building construction welding equipment, and provides the following scheme that the building steel welding device comprises a machine body and a rotatable operation panel fixed to one side of the machine body, and further comprises a moving mechanism arranged in the machine body and used for conducting welding moving butt joint on building steel for building construction; and the rotating mechanism is arranged above the moving mechanism and used for adjusting the welding angle of the building steel for building construction. The device is high in adaptability, can be compatible with steel with different sizes of 0.5 m-15m and various section types, does not need to frequently replace clamps, is flexible in welding, can achieve multi-position welding through a six-degree-of-freedom mechanical arm, enables the fusion depth error to be smaller than or equal to + / -0.2 mm through laser tracking, achieves efficient operation, completes track input within 3 minutes through graphical programming, automatically completes multi-layer and multi-pass welding, improves the flaw detection passing rate, and is suitable for large-scale popularization and application. Safety and environmental protection are guaranteed, force feedback collision prevention is achieved, the smoke exhaust mechanism purifies welding smoke in a directional mode, and remote monitoring and data tracing are supported.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology for building construction, and in particular to a welding device for building steel used in building construction. Background Technology

[0002] Welding of steel components is a core process in building construction, directly affecting the stability and safety of the building structure. Current steel welding equipment has several technical shortcomings. First, traditional welding equipment has poor adaptability. Steel components in construction vary greatly in size (0.5m-15m) and include various cross-sectional types such as square and round steel pipes. Existing equipment requires frequent adjustments to the positioning mechanism and even replacement of specialized fixtures, leading to excessive preparation time and severely impacting construction efficiency. Second, welding quality is poorly controllable. Traditional welding quality heavily relies on the welder's experience and condition, making it difficult to ensure consistent quality in large-scale, long-term construction. Weld penetration errors are significant, and the first-pass yield of ultrasonic testing is typically only 75%, resulting in high rework rates and project delays.

[0003] To address the aforementioned technical challenges, there is an urgent need to develop a building steel welding device that is highly adaptable, safe to operate, of stable quality, and easy to use, in order to promote the intelligent and safe transformation of building welding operations. Summary of the Invention

[0004] The present invention provides a welding device for building steel in construction, which solves the above-mentioned shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A steel welding device for building construction includes a body and a rotatable control panel fixed to one side of the body, and further includes:

[0007] The moving mechanism, located inside the machine body, is used for welding and moving construction steel for building construction.

[0008] The rotating mechanism, located above the moving mechanism, is used to adjust the welding angle of the building steel used in construction.

[0009] The positioning and clamping mechanism, located on both sides of the rotating mechanism, is used for quick positioning and clamping of construction steel materials used in building construction.

[0010] A multi-degree-of-freedom collaborative welding mechanism, located on one side of the machine body, is used for multi-degree-of-freedom angle welding of building steel for construction.

[0011] The smoke extraction mechanism, located inside the machine body, is used to quickly and directionally extract and discharge welding fumes generated during the welding of building steel for construction.

[0012] Furthermore, the moving mechanism includes a bidirectional threaded rod rotatably connected to one side of the machine body, with moving blocks threaded to both ends of the bidirectional threaded rod, a connecting plate fixedly connected to the top of the moving block, a guide block fixedly connected to one side of the bottom of the connecting plate, and a guide rod fixedly connected to the other side of the machine body, the guide rod being movably sleeved inside the guide block.

[0013] Furthermore, a first motor is fixedly connected to the outer side of the machine body, and a first pulley is fixedly connected to the output shaft of the first motor. A second pulley is fixedly connected to one end of the bidirectional threaded rod corresponding to the first pulley, and the second pulley and the first pulley are externally connected by the same first belt.

[0014] Furthermore, the rotating mechanism includes a rotating shaft rotatably connected to the connecting plate. A connecting frame is fixedly connected to the top of the rotating shaft, and a gear ring is fixedly connected to the bottom of the rotating shaft. A motor frame is fixedly connected to the bottom of the connecting plate, and a second motor is fixedly connected to the motor frame. A gear disk is fixedly connected to the output shaft of the second motor. One side of the gear disk meshes with the gear ring for transmission. An angle ruler is fixedly connected to one side of the connecting frame, and a pointer is fixedly connected to the top of the connecting plate at a position corresponding to the angle ruler. The pointer is located above the angle ruler.

[0015] Furthermore, the positioning and clamping mechanism includes threaded sleeves rotatably connected to both sides of the linkage frame. A threaded push rod is threadedly connected inside the threaded sleeve. A cross linkage frame is fixedly connected to one end of the threaded push rod. Multiple protective pads are fixedly connected to one side of the cross linkage frame. One side of each of the multiple protective pads abuts against the outer surface of the building steel used in construction. A movable hole is opened on the linkage frame corresponding to the threaded push rod. The threaded push rod is movably sleeved inside the movable hole. Two limiting blocks are fixedly connected inside the movable hole. A limiting groove is opened on the threaded push rod corresponding to the limiting block. The limiting block is movably sleeved inside the limiting groove.

[0016] Furthermore, a third pulley is fixedly connected to the threaded sleeve, a connecting rod is rotatably connected to one side of the linkage frame, a fourth pulley and a fifth pulley are fixedly connected to both ends of the connecting rod, the fourth pulley and one of the third pulleys on one side are externally connected to the same second belt, a third motor is fixedly connected to one side of the linkage frame, the output shaft of the third motor is fixedly connected to a sixth pulley, and the sixth pulley and the other side of the third pulley and the fifth pulley are externally connected to a third belt.

[0017] Furthermore, the positioning and clamping mechanism also includes a balance plate symmetrically rotatably connected to the top of the linkage frame. Multiple mounting holes are arrayed on the two balance plates, and rollers are rotatably connected inside the multiple mounting holes. A hydraulic telescopic rod is rotatably connected between one side of the two balance plates and the linkage frame, and a return spring is fixedly connected to the outside of the hydraulic telescopic rod.

[0018] Furthermore, the multi-degree-of-freedom collaborative welding mechanism includes a fixed plate fixedly connected to one side of the machine body. A base is fixedly connected to the top of the fixed plate, and a multi-degree-of-freedom collaborative robotic arm is rotatably connected to the base. The multi-degree-of-freedom collaborative robotic arm adopts a 6-degree-of-freedom structural design with an arm span ≥1.5m, allowing it to flexibly navigate through narrow spaces in construction steel structures and perform welding operations in multiple positions, such as vertical welding, horizontal welding, and overhead welding. The end of the multi-degree-of-freedom collaborative robotic arm is equipped with an intelligent welding module, which includes a welding gun, a force feedback sensor, a welding wire feeding mechanism, and a welding power source. The force feedback sensor is used to detect the contact force during the welding process in real time, avoiding rigid collisions with steel components and ensuring operational safety. The welding wire feeding mechanism adopts a push-pull wire feeding control, temporarily storing welding wire through an intermediate welding wire receiving cavity, and adjusting the welding wire storage volume in real time based on the amount of welding wire stored in the cavity. The wire feed speed is optimized to ensure wire feeding stability. The welding power supply has a built-in cloud-based welding process library, storing over 200 welding parameters for building steel. It can automatically match the optimal welding parameters based on the steel material, thickness, and welding position, supporting multi-layer and multi-pass welding. By simply identifying the root pass trajectory and setting the number of welding layers and passes, the system can automatically complete the root pass, fill pass, and cover pass welding operations. One end of the intelligent welding module is fixedly connected to a laser tracking and positioning module, which includes a laser vision sensor and a data processing unit. The laser vision sensor is used to detect the position of the steel weld in real time, and has three modes: static positioning, dynamic positioning, and real-time process tracking. It can accurately identify weld deviations and transmit the data to the central control system. The system adjusts the welding torch position and attitude in real time to compensate for deviations, ensuring the accuracy of the weld trajectory and controlling the weld penetration error within ±0.2mm.

[0019] Furthermore, the smoke exhaust mechanism includes a fan box fixedly connected to the inside of the machine body. A connecting rod is rotatably connected inside the fan box. One end of the connecting rod is fixedly connected to a fan blade, which is movably sleeved inside the fan box. The other end of the connecting rod is fixedly connected to a first bevel gear. A fourth motor is fixedly connected to one side of the fan box. A drive rod is fixedly connected to the output end of the fourth motor. One end of the drive rod is fixedly connected to a second bevel gear. One side of the second bevel gear meshes with the first bevel gear for transmission. A smoke exhaust port is opened on one side of the fan box corresponding to the machine body. A smoke exhaust pipe is fixedly connected to the smoke exhaust port. One end of the smoke exhaust pipe is connected to an external smoke filtration device.

[0020] Furthermore, the rotatable operation panel includes a central control system. The central control system adopts a graphical programming interface and supports drag-and-drop teaching function. Operators can complete the input of welding trajectory through a tablet computer. The programming of a new weld trajectory can be completed within 3 minutes, which is 10 times more efficient than traditional programming. The central control system includes a data storage unit, a parameter call unit, and a fault alarm unit, which are used to record the parameters, trajectory, and quality inspection data of each welding operation for later traceability and process optimization. It also supports remote monitoring and can view the welding operation status in real time.

[0021] Compared with existing technologies, the beneficial effects of this invention are:

[0022] 1. This invention, through the combined design of the threaded push rod and the cross linkage frame in the positioning and clamping mechanism, and the flexible contact structure of the protective pad, can quickly adapt to different size ranges from 0.5m to 15m, as well as various cross-sectional types of building steel such as square steel pipes, round steel pipes, and steel plates. It eliminates the need for frequent replacement of special clamps, shortens the preparation time for operation, and the roller structure on the balance plate ensures the stability of the steel movement and avoids surface friction damage, further expanding the applicable scenarios of the device.

[0023] 2. This invention achieves rapid alignment and docking of the steel welding ends through the precise cooperation of the bidirectional threaded rod and guide rod in the moving mechanism. Furthermore, the rotating mechanism, with the help of gear transmission and the visual positioning of the angle ruler and pointer, enables precise adjustment of any welding angle within the range of 0°-80° on one side, easily meeting diverse welding needs. No additional auxiliary support structure is required, which greatly improves the adaptability to complex working conditions.

[0024] 3. This invention utilizes a multi-degree-of-freedom collaborative welding mechanism with a built-in cloud-based welding process library of over 200 welding processes. It can automatically match the optimal parameters based on the steel material, thickness, and welding position, supporting automated execution of multi-layer and multi-pass welding. Only the root pass trajectory needs to be taught to complete the entire welding process, avoiding reliance on manual operation experience. At the same time, the laser tracking and positioning module has three modes: static positioning, dynamic positioning, and real-time process tracking. It captures weld deviations in real time and, combined with the real-time adjustment function of the central control system, controls weld penetration error, improves the first-pass yield of ultrasonic testing, and reduces rework rate and the risk of project delays.

[0025] 4. This invention uses a force feedback sensor to detect welding contact force in real time, effectively avoiding rigid collisions between the welding torch and the steel. The push-pull wire feeding mechanism dynamically corrects the wire feeding speed by adjusting the storage capacity of the wire receiving cavity, ensuring the stability of wire feeding and reducing defects such as weld porosity, slag inclusion, and incomplete penetration from the source.

[0026] 5. This invention can quickly capture welding fumes generated during the welding process through a fume extraction mechanism, and deliver them to an external filtration device via a fume extraction pipe, effectively improving the air quality at the construction site, protecting the respiratory health of operators, and meeting the environmental protection requirements of green construction.

[0027] In summary, this invention is not only highly adaptable, compatible with steel of different sizes and cross-sectional types from 0.5m to 15m, eliminating the need for frequent fixture changes, but also offers flexible welding capabilities. The 6-DOF robotic arm enables multi-position welding, and laser tracking ensures a penetration depth error of ≤±0.2mm, achieving high operational efficiency. Graphical programming allows for trajectory entry in 3 minutes, and multi-layer, multi-pass welding is completed automatically, improving flaw detection pass rates and ensuring safety and environmental protection. Force feedback prevents collisions, and the fume extraction mechanism directionally purifies welding fumes. It also supports remote monitoring and data traceability. Attached Figure Description

[0028] Figure 1 This is a first top-view three-dimensional structural diagram of a building steel welding device for building construction proposed in this invention.

[0029] Figure 2 This is a second top-view three-dimensional structural diagram of a building steel welding device for building construction proposed in this invention;

[0030] Figure 3 This is a schematic diagram of the overall bottom-view three-dimensional structure of a steel welding device for building construction proposed in this invention.

[0031] Figure 4 This is a partial cross-sectional top view of the three-dimensional structure of the body of a building steel welding device for building construction proposed in this invention.

[0032] Figure 5 This is a top-view three-dimensional structural diagram of the fan box of a building steel welding device for building construction proposed in this invention;

[0033] Figure 6 This is a top-view three-dimensional structural diagram of the positioning clamping mechanism and the moving mechanism of a building steel welding device for building construction proposed in this invention.

[0034] Figure 7 This is a bottom-view three-dimensional structural diagram of the rotating mechanism and the moving mechanism of a building steel welding device for building construction proposed in this invention.

[0035] Figure 8 This is a bottom-view three-dimensional structural diagram of the smoke exhaust mechanism of a building steel welding device for building construction proposed in this invention;

[0036] Figure 9 This is a first top-view three-dimensional structural schematic diagram of the positioning and clamping mechanism of a building steel welding device for building construction proposed in this invention.

[0037] Figure 10 This is a top-view three-dimensional structural diagram of the threaded push rod and limiting groove of a building steel welding device for building construction proposed in this invention;

[0038] Figure 11 This is a second top-view three-dimensional structural diagram of the positioning and clamping mechanism of a building steel welding device for building construction proposed in this invention;

[0039] Figure 12 This is a schematic diagram of the planar structure of the rotating mechanism and the positioning clamping mechanism of the building steel welding device for building construction proposed in this invention.

[0040] In the diagram: 1. Machine body; 2. Moving mechanism; 201. Bidirectional threaded rod; 202. Moving block; 203. Connecting plate; 204. Second pulley; 205. Guide block; 206. Guide rod; 207. First motor; 208. First pulley; 209. First belt; 3. Rotating mechanism; 301. Rotating shaft; 302. Connecting frame; 303. Gear ring; 304. Second motor; 305. Gear disk; 306. Angle ruler; 307. Pointer; 4. Positioning and clamping mechanism; 401. Threaded sleeve; 402. Threaded push rod; 403. Cross connecting frame; 404. Protective pad; 405. Limiting block; 406. Limiting groove; 407. Third pulley; 408. Connecting rod; 409. Fourth... 410. Belt pulley; 411. Fifth belt pulley; 412. Second belt; 413. Third motor; 414. Sixth belt pulley; 415. Third belt; 416. Balance plate; 417. Roller; 418. Hydraulic telescopic rod; 419. Return spring; 5. Multi-degree-of-freedom collaborative welding mechanism; 501. Fixing plate; 502. Base; 503. Multi-degree-of-freedom collaborative robotic arm; 504. Intelligent welding module; 505. Welding gun; 506. Laser tracking and positioning module; 6. Smoke exhaust mechanism; 601. Fan box; 602. Connecting rod; 603. Fan blade; 604. First bevel gear; 605. Fourth motor; 606. Drive rod; 607. Second bevel gear; 608. Smoke exhaust pipe; 7. Rotatable operation panel. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Example, refer to Figure 1-12 A welding device for building steel in construction includes a body 1 and a rotatable operating panel 7 fixed to one side of the body 1, and further includes:

[0044] The system includes a moving mechanism 2, a rotating mechanism 3, a positioning and clamping mechanism 4, a multi-degree-of-freedom collaborative welding mechanism 5, and a fume extraction mechanism 6. A rotatable operation panel 7 includes a central control system. The central control system uses a graphical programming interface and supports drag-and-drop teaching functionality. Operators can input welding trajectories via a tablet computer and program new weld trajectories within 3 minutes, improving efficiency by 10 times compared to traditional programming. The central control system includes a data storage unit, a parameter call unit, and a fault alarm unit, used to record parameters, trajectories, and quality inspection data for each welding operation, for later traceability and process optimization. It also supports remote monitoring, allowing real-time viewing of the welding operation status.

[0045] In this invention, the moving mechanism 2 includes a bidirectional threaded rod 201 rotatably connected to one side of the interior of the machine body 1. Moving blocks 202 are threaded to both ends of the bidirectional threaded rod 201. A connecting plate 203 is fixedly connected to the top of the moving block 202, and a guide block 205 is fixedly connected to one side of the bottom of the connecting plate 203. A guide rod 206 is fixedly connected to the other side of the interior of the machine body 1, and the guide rod 206 is movably sleeved inside the guide block 205. A first motor 207 is fixedly connected to one side of the exterior of the machine body 1. A first pulley 208 is fixedly connected to the output shaft of the first motor 207. One end of the bidirectional threaded rod 201 is fixed at the location corresponding to the first pulley 208. A second pulley 204 is connected, and the second pulley 204 and the first pulley 208 are externally connected by the same first belt 209. The first motor 207 starts and drives the first pulley 208 to rotate. At the same time, the first belt 209 drives the second pulley 204 to rotate synchronously, thereby driving the rotation of the bidirectional threaded rod 201 and driving the two moving blocks 202 to move in opposite directions. When the two moving blocks 202 move in opposite directions, the connecting plate 203 moves smoothly along the guide rod 206 through the guide block 205, thereby connecting the welding points of the two building steel materials that need to be welded.

[0046] It is worth mentioning that the threads at both ends of the bidirectional threaded rod 201 are in opposite directions. Therefore, when the bidirectional threaded rod 201 rotates, it will drive the moving blocks 202 at both ends to move in opposite directions. This design is common knowledge and can be easily thought of by those skilled in the art. Therefore, it has not been described in detail in this application.

[0047] In this invention, the rotating mechanism 3 includes a rotating shaft 301 rotatably connected to the connecting plate 203. A connecting frame 302 is fixedly connected to the top of the rotating shaft 301, and a gear ring 303 is fixedly connected to the bottom of the rotating shaft 301. A motor frame is fixedly connected to the bottom of the connecting plate 203, and a second motor 304 is fixedly connected to the motor frame. A gear disk 305 is fixedly connected to the output shaft of the second motor 304. One side of the gear disk 305 meshes with the gear ring 303 for transmission. An angle ruler 306 is fixedly connected to one side of the connecting frame 302. The connecting plate 203... A pointer 307 is fixedly connected to the top of the angle ruler 306. The pointer 307 is located above the angle ruler 306. When the welded angle between two building steel materials is not a flat angle, the second motor 304 starts and drives the gear disk 305 to rotate. At the same time, it meshes with the gear ring 303 to rotate, thereby driving the rotating shaft 301 to rotate. Simultaneously, it drives the connecting frame 302 to rotate. At the same time, the rotation angle can be checked by the cooperation of the angle ruler 306 and the pointer 307 to determine whether the welded angle between the two building steel materials is correct.

[0048] It is worth mentioning that the 302 linkage frame has an adjustable angle range of 0°-80° on one side. The direction and angle of welding on both sides can be adjusted according to actual needs, and independent single-side angle adjustment is also possible.

[0049] In this invention, the positioning and clamping mechanism 4 includes a threaded sleeve 401 rotatably connected to both sides of the linkage frame 302. A threaded push rod 402 is threadedly connected inside the threaded sleeve 401. One end of the threaded push rod 402 is fixedly connected to a cross linkage frame 403. Multiple protective pads 404 are fixedly connected to one side of the cross linkage frame 403. One side of each of the multiple protective pads 404 abuts against the outer surface of the building steel used in construction. The linkage frame 302 has a movable hole corresponding to the threaded push rod 402. The threaded push rod 402 is movably sleeved inside the movable hole. Two limiting blocks 405 are fixedly connected inside the movable hole. The threaded push rod 402 has a hole corresponding to the limiting block 405. A limiting groove 406 is provided, and a limiting block 405 is movably sleeved inside the limiting groove 406. A third pulley 407 is fixedly connected to a threaded sleeve 401. A connecting rod 408 is rotatably connected to one side of the connecting frame 302. A fourth pulley 409 and a fifth pulley 410 are fixedly connected to both ends of the connecting rod 408, respectively. The fourth pulley 409 is externally connected to the third pulley 407 on one side via the same second belt 411. A third motor 412 is fixedly connected to one side inside the connecting frame 302. A sixth pulley 413 is fixedly connected to the output shaft of the third motor 412. The sixth pulley 413 is connected to the third pulley 407 and the fifth pulley 410 on the other side. The external transmission connection includes a third belt 414, and also includes balance plates 415 symmetrically rotatably connected to the top of the linkage frame 302. Multiple mounting holes are arrayed on the two balance plates 415, and rollers 416 are rotatably connected inside the mounting holes. A hydraulic telescopic rod 417 is rotatably connected between one side of the two balance plates 415 and the linkage frame 302. A return spring 418 is fixedly connected to the outside of the hydraulic telescopic rod 417. The third motor 412 starts and drives the sixth pulley 413 to rotate, simultaneously driving the rotation of the adjacent third pulley 407 and fifth pulley 410 via the third belt 414. The rotation of the third pulley 407 on one side is transmitted through the linkage rod 414. 08 drives the rotation of the fourth pulley 409, and at the same time drives the rotation of the third pulley 407 on the other side through the second belt 411. The rotation of the third pulley 407 drives the rotation of the two threaded sleeves 401. The rotation of the threaded sleeves 401 drives the threaded push rod 402 to move smoothly along the limit block 405 through the limit groove 406, thereby driving the cross linkage frame 403 and the protective pad 404 to move, fixing and clamping the construction steel placed on the balance plate 415. At the same time, the rollers 416 on the balance plate 415 make the construction steel move smoothly, reducing the damage to the surface of the construction steel caused by friction.

[0050] It is worth mentioning that the threads of the two threaded push rods 402 and the threaded sleeve 401 are opposite. Therefore, when the threaded sleeve 401 rotates in one direction, the threaded push rods 402 move in the opposite direction. This design is common knowledge and can be easily conceived by those skilled in the art. Therefore, it has not been described in detail in this application.

[0051] In this invention, the multi-degree-of-freedom collaborative welding mechanism 5 includes a fixed plate 501 fixedly connected to one side of the machine body 1. A base 502 is fixedly connected to the top of the fixed plate 501. A multi-degree-of-freedom collaborative robotic arm 503 is rotatably connected to the base 502. The multi-degree-of-freedom collaborative robotic arm 503 adopts a 6-degree-of-freedom structural design with an arm span ≥1.5m, which can flexibly move through the narrow space of building steel used in construction to realize multi-position welding operations. The end of the multi-degree-of-freedom collaborative robotic arm 503 is equipped with an intelligent welding module 504. The intelligent welding module 504 includes a welding gun 505, a force feedback sensor, a welding wire feeding mechanism, and a welding power source. The force feedback sensor is used to detect the contact force in real time during the welding process to avoid rigid collisions with steel components and ensure operational safety. The welding wire feeding mechanism adopts a push-pull type wire feeding control, temporarily storing welding wire through an intermediate welding wire receiving cavity, and adjusting the wire feeding speed in real time based on the amount of welding wire stored in the receiving cavity. To ensure wire feeding stability, the welding power supply has a built-in cloud-based welding process library storing over 200 welding parameters for building steel. It can automatically match the optimal welding parameters based on the steel material (carbon steel, stainless steel, aluminum alloy, etc.), thickness, and welding position. It supports multi-layer, multi-pass welding; simply teach the root pass trajectory and set the number of welding layers and passes to automatically complete the root pass, fill pass, and cover pass welding operations. One end of the intelligent welding module 504 is fixedly connected to a laser tracking and positioning module 506. The laser tracking and positioning module 506 includes a laser vision sensor and a data processing unit. The laser vision sensor is used to detect the position of the steel weld in real time, featuring three modes: static positioning, dynamic positioning, and real-time process tracking. It can accurately identify weld deviations and transmit the data to the central control system. The system adjusts the welding torch position and attitude in real time to compensate for deviations, ensuring the accuracy of the weld trajectory and controlling the weld penetration error within ±0.2mm.

[0052] In this invention, the smoke exhaust mechanism 6 includes a fan box 601 fixedly connected to the inside of the body 1. A connecting rod 602 is rotatably connected inside the fan box 601. One end of the connecting rod 602 is fixedly connected to a fan blade 603, which is movably sleeved inside the fan box 601. The other end of the connecting rod 602 is fixedly connected to a first bevel gear 604. A fourth motor 605 is fixedly connected to one side of the fan box 601. A drive rod 606 is fixedly connected to the output end of the fourth motor 605. A second bevel gear 607 is fixedly connected to one end of the drive rod 606. One side of the second bevel gear 607 meshes with the first bevel gear 604 for transmission. A smoke exhaust port is opened on one side of the fan box 601 corresponding to the body 1. A smoke exhaust pipe 608 is fixedly connected to the smoke exhaust port. One end of the smoke exhaust pipe 608 is connected to an external smoke filtration device.

[0053] Working principle:

[0054] I. Preparation stage: Steel positioning and posture adjustment;

[0055] Steel feeding and initial support: The operator places the construction steel to be welded (including steel plates of different sizes from 0.5m to 15m, square steel pipes / round steel pipes and other cross-sectional types) on the balance plate 415 of the positioning and clamping mechanism 4. The balance plate 415 adapts to the shape of the steel through the hydraulic telescopic rod 417, the roller 416 structure reduces surface friction damage when the steel moves, and the return spring 418 ensures the support stability of the balance plate 415, so as to achieve stable support of the steel.

[0056] Quick positioning and clamping: The third motor 412 is started by the rotatable operation panel 7. The output shaft of the third motor 412 drives the sixth pulley 413 to rotate. The rotation is transmitted to the third pulley 407 and the fifth pulley 410 on the other side via the third belt 414. The fifth pulley 410 drives the fourth pulley 409 to rotate via the connecting rod 408. The second belt 411 then drives the third pulley 407 on the other side to rotate synchronously, ultimately achieving the same-direction rotation of the threaded sleeves 401 on both sides.

[0057] The threaded sleeve 401 and the threaded push rod 402 are engaged by threads. Under the guidance and constraint of the limiting block 405 and the limiting groove 406, the threaded push rod 402 pushes the cross linkage 403 to move towards the steel until the protective pad 404 is in close contact with the outer surface of the steel, thus completing the rapid positioning and clamping of the steel. This adapts to the fixing requirements of steel with different cross-sections and does not require the replacement of special clamps.

[0058] Welding position docking: Start the first motor 207, its output shaft drives the first pulley 208 to rotate, which is transmitted to the second pulley 204 through the first belt 209, and then drives the bidirectional threaded rod 201 to rotate. The threads at both ends of the bidirectional threaded rod 201 are opposite, which drives the two moving blocks 202 on both sides to move relative to each other. The connecting plate 203 at the top of the moving block 202 moves smoothly along the guide rod 206 through the guide block 205, so as to achieve precise docking of the welding ends of the two steel materials to be welded, reducing the preparation time for operation.

[0059] Welding angle adjustment: If the welding requirement is a non-flat angle butt joint, start the second motor 304. Its output shaft drives the gear disk 305 to rotate. The gear disk 305 meshes with the gear ring 303 below the rotating shaft 301 to drive the rotating shaft 301 and the connecting frame 302 to rotate. The operator can use the angle ruler 306 on one side of the connecting frame 302 and the pointer 307 on the top of the connecting plate 203 to precisely control the rotation angle, realize the adjustment of welding posture at different angles such as vertical welding and oblique welding, and meet the needs of diverse welding scenarios.

[0060] II. Welding Stage: Intelligent Welding and Welding Fume Treatment;

[0061] Welding parameter matching: Operators can input welding trajectories through the graphical programming interface of the rotatable operation panel 7 using the drag-and-drop teaching function. The parameter calling unit of the central control system automatically matches the optimal welding parameters from the built-in cloud welding process library based on the steel material, thickness and welding position, and supports multi-layer and multi-pass welding parameter presets.

[0062] Multi-degree-of-freedom welding operation: The multi-degree-of-freedom collaborative robotic arm 503 is activated under the command of the central control system. It can flexibly move through the narrow space of the steel and drive the intelligent welding module 504 at the end to move to the welding start position. During the welding process, the laser tracking and positioning module 506 detects the weld position in real time through the laser vision sensor. It has three modes: static positioning, dynamic positioning and real-time process tracking. It accurately identifies the weld deviation and transmits the data to the central control system. The system adjusts the posture of the robotic arm and the position of the welding gun in real time to control the weld penetration error within ±0.2mm.

[0063] Adaptive control of the welding process: The force feedback sensor in the intelligent welding module 504 detects the welding contact force in real time to avoid rigid collision between the welding gun 505 and the steel component. The wire feeding mechanism adopts push-pull wire feeding control and corrects the wire feeding speed in real time through the storage capacity of the intermediate wire receiving cavity to ensure wire feeding stability. The welding power supply automatically completes multi-layer and multi-pass welding operations of root pass, fill pass and cover pass according to preset parameters without manual intervention, ensuring consistent welding quality and improving the first pass rate of ultrasonic flaw detection.

[0064] Directional emission of welding fumes: When welding operation starts, the central control system simultaneously activates the fume extraction mechanism 6. After the fourth motor 605 starts, it drives the drive rod 606 and the second bevel gear 607 to rotate. The second bevel gear 607 meshes with the first bevel gear 604 to drive the connecting rod 602 and the fan blades 603 to rotate at high speed in the fan box 601, generating negative pressure suction to quickly draw the welding fumes generated during welding into the fan box 601. Then, the fumes are directionally transported to the external fume filtration equipment through the fume extraction pipe 608 to achieve efficient purification of welding fumes and improve the working environment.

[0065] III. Final Stage: Data Recording and Equipment Reset

[0066] Welding data storage and traceability: The data storage unit of the central control system automatically records the parameters of this welding operation (such as welding current, voltage, wire feed speed, etc.), welding trajectory and quality inspection data, providing data support for subsequent process optimization and quality traceability, while also supporting real-time viewing of operation records at the remote monitoring terminal.

[0067] Mechanism reset and steel removal: After welding is completed, each motor rotates in reverse, driving the threaded push rod 402 of the positioning clamping mechanism 4 to retract. The operator can directly remove the welded steel. After removal, the moving mechanism 2 resets and the rotating mechanism 3 returns to its original position. The hydraulic telescopic rod 417 drives the balance plate 415 to return to a stable position. If a fault occurs during operation, the fault alarm unit of the central control system will issue a warning signal in time to ensure operational safety.

[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel welding device for building construction, comprising a body (1) and a rotatable operating panel (7) fixed to one side of the body (1), characterized in that, Also includes: The moving mechanism (2), located inside the body (1), is used for welding and moving the building steel used in construction. The rotating mechanism (3), located above the moving mechanism (2), is used to adjust the welding angle of the building steel used in construction. The positioning and clamping mechanism (4) is located on both sides of the rotating mechanism (3) and is used to quickly position and clamp the building steel used in construction. A multi-degree-of-freedom collaborative welding mechanism (5) is located on one side of the machine body (1) and is used for multi-degree-of-freedom angle welding of building steel for construction. The smoke exhaust mechanism (6) is located inside the body (1) and is used to quickly attract and directionally exhaust the welding fumes generated during the welding of building steel for construction.

2. The steel welding device for building construction according to claim 1, characterized in that, The moving mechanism (2) includes a bidirectional threaded rod (201) rotatably connected to one side of the interior of the body (1). The two ends of the bidirectional threaded rod (201) are respectively threaded with moving blocks (202). The top of the moving block (202) is fixedly connected with a connecting plate (203). The bottom side of the connecting plate (203) is fixedly connected with a guide block (205). The other side of the interior of the body (1) is fixedly connected with a guide rod (206). The guide rod (206) is movably sleeved inside the guide block (205).

3. The steel welding device for building construction according to claim 2, characterized in that, A first motor (207) is fixedly connected to one side of the outer side of the body (1). The output shaft of the first motor (207) is fixedly connected to a first pulley (208). One end of the bidirectional threaded rod (201) is fixedly connected to a second pulley (204) at the location corresponding to the first pulley (208). The second pulley (204) and the first pulley (208) are connected to the same first belt (209) for external transmission.

4. The steel welding device for building construction according to claim 2, characterized in that, The rotating mechanism (3) includes a rotating shaft (301) rotatably connected to the connecting plate (203). A connecting frame (302) is fixedly connected to the top of the rotating shaft (301). A gear ring (303) is fixedly connected to the bottom of the rotating shaft (301). A motor frame is fixedly connected to the bottom of the connecting plate (203). A second motor (304) is fixedly connected to the motor frame. A gear disk (305) is fixedly connected to the output shaft of the second motor (304). One side of the gear disk (305) meshes with the gear ring (303) for transmission. An angle ruler (306) is fixedly connected to one side of the connecting frame (302). A pointer (307) is fixedly connected to the top of the connecting plate (203) at the angle ruler (306). The pointer (307) is located above the angle ruler (306).

5. A steel welding device for building construction according to claim 4, characterized in that, The positioning and clamping mechanism (4) includes a threaded sleeve (401) rotatably connected to both sides of the linkage frame (302). A threaded push rod (402) is threadedly connected inside the threaded sleeve (401). A cross linkage frame (403) is fixedly connected to one end of the threaded push rod (402). A plurality of protective pads (404) are fixedly connected to one side of the cross linkage frame (403). One side of each of the protective pads (404) abuts against the outer surface of the building steel used in construction. The linkage frame (302) has a movable hole corresponding to the threaded push rod (402). The threaded push rod (402) is movably sleeved inside the movable hole. Two limiting blocks (405) are fixedly connected inside the movable hole. A limiting groove (406) is opened at the position of the threaded push rod (402) corresponding to the limiting block (405). The limiting block (405) is movably sleeved inside the limiting groove (406).

6. The steel welding device for building construction according to claim 5, characterized in that, A third pulley (407) is fixedly connected to the threaded sleeve (401). A connecting rod (408) is rotatably connected to one side of the connecting frame (302). A fourth pulley (409) and a fifth pulley (410) are fixedly connected to both ends of the connecting rod (408). The fourth pulley (409) is externally connected to the third pulley (407) on one side via the same second belt (411). A third motor (412) is fixedly connected to one side of the connecting frame (302). A sixth pulley (413) is fixedly connected to the output shaft of the third motor (412). The sixth pulley (413) is externally connected to the third pulley (407) and the fifth pulley (410) on the other side via a third belt (414).

7. A welding device for building steel in construction according to claim 4, characterized in that, The positioning and clamping mechanism (4) also includes a balance plate (415) symmetrically rotatably connected to the top of the linkage frame (302). Multiple mounting holes are arrayed on the two balance plates (415), and rollers (416) are rotatably connected inside the multiple mounting holes. A hydraulic telescopic rod (417) is rotatably connected between one side of the two balance plates (415) and the linkage frame (302), and a return spring (418) is fixedly connected to the outside of the hydraulic telescopic rod (417).

8. The steel welding device for building construction according to claim 1, characterized in that, The multi-degree-of-freedom collaborative welding mechanism (5) includes a fixed plate (501) fixedly connected to one side of the body (1). A base (502) is fixedly connected to the top of the fixed plate (501). A multi-degree-of-freedom collaborative robotic arm (503) is rotatably connected to the base (502). The multi-degree-of-freedom collaborative robotic arm (503) adopts a 6-degree-of-freedom structure design. An intelligent welding module (504) is provided at the end of the multi-degree-of-freedom collaborative robotic arm (503). The intelligent welding module (504) includes a welding gun (505), a force feedback sensor, a welding wire feeding mechanism, and a welding power source. The force feedback sensor is used to detect the contact force during the welding process in real time. The welding wire feeding mechanism adopts a push-pull type wire feeding control. The welding power source has a built-in cloud welding process library. A laser tracking and positioning module (506) is fixedly connected to one end of the intelligent welding module (504). The laser tracking and positioning module (506) includes a laser vision sensor and a data processing unit. The laser vision sensor is used to detect the position of the steel weld in real time.

9. A welding device for building steel in construction according to claim 8, characterized in that, The smoke exhaust mechanism (6) includes a fan box (601) fixedly connected to the inside of the body (1). A connecting rod (602) is rotatably connected inside the fan box (601). A fan blade (603) is fixedly connected to one end of the connecting rod (602). The fan blade (603) is movably sleeved inside the fan box (601). A first bevel gear (604) is fixedly connected to the other end of the connecting rod (602). A fourth motor is fixedly connected to one side of the outside of the fan box (601). 605), the output end of the fourth motor (605) is fixedly connected to a drive rod (606), one end of the drive rod (606) is fixedly connected to a second bevel gear (607), one side of the second bevel gear (607) meshes with the first bevel gear (604) for transmission, one side of the fan box (601) is provided with a smoke exhaust port corresponding to the body (1), a smoke exhaust pipe (608) is fixedly connected to the smoke exhaust port, one end of the smoke exhaust pipe (608) is connected to an external smoke filtration device.

10. A welding device for building steel in construction according to claim 1, characterized in that, The rotatable operation panel (7) includes a central control system. The central control system adopts a graphical programming interactive interface. The central control system includes a data storage unit, a parameter calling unit, and a fault alarm unit, which are used to record the parameters, trajectory, and quality inspection data of each welding operation for later traceability and process optimization.

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