Building steel structure joint welding device and welding method thereof

Abstract

The application discloses a kind of building steel structure node welding device and welding method thereof, wherein, welding device includes I column, crossbeam and welding mechanism, crossbeam is installed between two groups of I column, welding mechanism is installed at the outside of crossbeam, welding mechanism includes sliding table, sliding table is installed at the two sides of crossbeam, the top of sliding table is fixedly connected with first motor, the driving end of first motor is fixedly connected with screw rod, the outer wall of screw rod is threadedly connected with first sliding cylinder, the outer wall of first sliding cylinder is fixedly connected with welding gun, the outer wall of sliding table is fixedly connected with two groups of support rods, the outer wall of support rod is slidably connected with second sliding cylinder, two groups of second sliding cylinder are fixedly connected with first connecting plate, the present application is rotated by first motor driving screw rod, realizes the purpose of automatic welding to replace traditional manual high-altitude welding, can effectively reduce the safety risk of high-altitude operation, can also reduce manpower burden, effectively improve the work efficiency of welding.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, specifically relating to a welding device and welding method for steel structure nodes in buildings. Background Technology

[0002] In steel structure systems, the key connection points where beams, columns, and other components intersect are called "nodes." Steel structure nodes are the core areas of stress concentration and load transfer, and are crucial for directly bearing vertical loads, resisting lateral forces, and dissipating seismic energy. The reliability of their connections is a core factor determining the overall stability, seismic performance, and service life of the steel structure. This welding device is mainly used in the steel structure construction of large-scale building projects such as high-rise buildings, large-span factories, steel structure bridges, stadiums, and convention centers. It is a key construction equipment for ensuring the safety, integrity, and durability of steel structure projects.

[0003] For example, patent CN113748755B, published on November 17, 2023, discloses an automatic welding equipment for building steel structures, relating to the field of building steel structure welding technology. It includes a base component that moves along the transverse steel and a docking part that supports the longitudinal steel. The base component has a docking part at its upper end and includes a moving group and a control group. The moving group includes a lower plate. Two sets of transversely symmetrical traveling wheels are provided at the lower end of the lower plate. A stop plate with a rubber layer is provided on the side of the traveling wheels that is far apart from each other. A lower electric push rod is connected between the upper end of the stop plate and the lower plate. Two sets of limiting members are provided transversely symmetrically at the lower end of the lower plate. Each set of limiting members includes two sets of longitudinally symmetrical control plates. A travel plate is provided at the lower end of the control plate. The traveling wheels are located between the two sets of control plates. An upper plate is installed at the upper end of the lower plate via a telescopic rod.

[0004] As disclosed in the prior art, most of the steel structure nodes to be welded are located in high-altitude areas. Workers need to climb to the height of the steel beams and complete the welding work by straddling the steel beams and bending over. This method of operation is highly dependent on the practical experience of the operators. Due to differences in human operation techniques and conditions, it is difficult to unify the welding quality of each node and the weld consistency is poor. At the same time, the restricted high-altitude working posture is not conducive to continuous construction, and the overall welding operation efficiency is low. Summary of the Invention

[0005] This invention provides a welding device and welding method for steel structure nodes in buildings, which solves the technical problems of steel structure node welding relying on manual high-altitude operations, poor welding quality stability and low construction efficiency in related technologies.

[0006] This invention provides a welding device for steel structure nodes in a building, including I-beams, crossbeams, and a welding mechanism. The crossbeams are installed between two sets of I-beams, and the welding mechanism is installed on the outside of the crossbeams. The welding mechanism includes a sliding table, which is installed on both sides of a crossbeam. A first motor is fixedly connected to the top of the sliding table, and a lead screw is fixedly connected to the drive end of the first motor. A first sliding cylinder is threadedly connected to the outer wall of the lead screw, and a welding gun is fixedly connected to the outer wall of the first sliding cylinder. Two sets of support rods are fixedly connected to the outer wall of the sliding table, and second sliding cylinders are slidably connected to the outer walls of the support rods. A first connecting plate is fixedly connected between the two sets of second sliding cylinders, and a second connecting plate is fixedly connected to the outer wall of each set of second sliding cylinders. Both sets of second connecting plates are fixedly connected to the first sliding cylinders. The other end of the welding gun is connected to the first connecting plate.

[0007] In a preferred embodiment, the welding device further includes a swing mechanism mounted on the outside of the first connecting plate. The swing mechanism includes a second motor, which is fixedly connected to the top of the first connecting plate. A turntable is fixedly connected to the drive end of the second motor. A support column is fixedly connected to the turntable at a position away from its center. A third sliding cylinder is fixedly connected to the other end of the support column. Rotating plates are rotatably connected to both sides of the first connecting plate. A connecting rod is fixedly connected to the side of the two sets of rotating plates away from the first connecting plate. The other ends of the two sets of rotating plates are rotatably connected to the welding gun. The third sliding cylinder is slidably connected to the connecting rod.

[0008] In a preferred embodiment, the welding device further includes a positioning mechanism, which is installed on the top of the I-beam and connected to the welding mechanism. The positioning mechanism includes a protective shell, a support plate is fixedly connected to the bottom of the protective shell, a third motor is fixedly connected inside the protective shell, a gear is fixedly connected to the drive end of the third motor, and two sets of racks are slidably connected inside the support plate. The other end of the racks is fixedly connected to the sliding table, and both sets of racks are meshed with the gears.

[0009] In a preferred embodiment, the welding apparatus further includes a support plate, the lower surface of which is in contact with the upper surface of the I-beam.

[0010] In a preferred embodiment, the welding apparatus further includes a clamping mechanism fixedly connected to both ends of the support plate.

[0011] In a preferred embodiment, the clamping mechanism includes a first drive component and a gripper, the gripper being fixedly connected to the actuating end of the first drive component.

[0012] In a preferred embodiment, the welding apparatus further includes a telescopic mechanism slidably connected to the top of the support plate. The telescopic mechanism includes a sliding plate, a sleeve, a second drive assembly, a first telescopic arm, and a second telescopic arm. The sliding plate is slidably connected to the upper surface of the support plate. A groove is formed on the top of the support plate, and a protrusion is fixedly connected to the bottom of the sliding plate. The protrusion is located inside the groove and forms a sliding guide engagement with the groove. The sleeve is fixedly connected to the top of the sliding plate, and the second drive assembly is fixedly connected to the sleeve. The second drive assembly is used to drive the first telescopic arm to rotate around the central axis of the sleeve. The first telescopic arm is rotatably connected to the sleeve, and the second telescopic arm is slidably connected to the outer wall of the first telescopic arm.

[0013] In a preferred embodiment, the welding apparatus further includes a position adjustment mechanism, which includes a third drive assembly fixedly connected to the top of the support plate. A gear is fixedly connected to the drive end of the third drive assembly, and the gear is rotatably connected to the support plate. A rack is slidably connected to the top of the support plate, and the gear meshes with the rack.

[0014] In one embodiment of the present invention, one end of the rack rod is fixedly connected to the sleeve, and the other end of the second telescopic arm is fixedly connected to the protective shell.

[0015] A welding method for a welding device for steel structure joints in buildings includes the following steps: Step S1: Splice and fit the I-beams with the crossbeams to complete the preliminary pre-assembly and positioning of the steel structure welding nodes; Step S2: Place the welding device on top of the I-beam, operate the clamping mechanism to clamp the I-beam, and fix the entire welding device. Step S3: Start the position adjustment mechanism to drive the rack rod to slide, drive the telescopic mechanism to move horizontally as a whole, and start the second drive component to drive the first telescopic arm to rotate and cooperate with the second telescopic arm to extend and retract, so that the welding gun is aligned with the node to be welded. Then start the third motor, which drives the rack to move towards each other through the gear, and drives the sliding table to clamp the crossbeam to complete the locking. Step S4: Start the first motor and the second motor, the welding gun moves up and down and swings, and the node welding operation is completed by fish scale welding; Step S5: Release the positioning mechanism lock, move the welding mechanism to the next node through the position adjustment mechanism and telescopic mechanism, reposition and lock the equipment; Step S6: Complete the welding of all nodes in sequence. After the operation is completed, release the clamping mechanism and dismantle the entire welding device.

[0016] The beneficial effects of this invention are as follows: This invention uses a first motor to drive a lead screw to rotate, which in turn drives the first sliding cylinder and the welding gun to move up and down synchronously, thereby achieving stable vertical welding operations. This achieves the goal of replacing traditional manual high-altitude welding with automated welding, effectively reducing the safety risks of high-altitude operations, reducing manpower burden, and effectively improving welding efficiency.

[0017] This invention uses a second motor to drive a turntable and a connecting rod, which in turn drives the welding gun to swing back and forth in a regular manner in the left and right direction. Combined with vertical lifting motion, this achieves the fish-scale welding process, thereby improving the density and structural strength of the weld seams at steel structure nodes and optimizing the welding quality.

[0018] This invention uses a third motor to drive the gear and rack to mesh and drive the sliding tables on both sides to open and close, thereby achieving rapid alignment, locking and disengagement of the welding mechanism, eliminating the need for manual adjustment and further improving the overall welding efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a welding device for steel structure nodes proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the bearing plate structure of a welding device for steel structure nodes in a building proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the second telescopic arm structure of a welding device for steel structure nodes in a building proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the support plate structure of a welding device for steel structure nodes in a building proposed in this invention.

[0023] Figure 5 This is a schematic diagram of the first connecting plate structure of a welding device for steel structure nodes proposed in this invention.

[0024] Figure 6 This is a schematic diagram of the third sliding cylinder structure of a welding device for steel structure nodes proposed in this invention.

[0025] Figure 7 This is a schematic diagram of the connecting rod structure of a welding device for steel structure nodes in a building, as proposed in this invention.

[0026] In the diagram: 1. I-beam; 2. Crossbeam; 3. Welding mechanism; 31. Sliding table; 32. First motor; 33. Lead screw; 34. First sliding cylinder; 35. Welding gun; 36. Support rod; 37. Second sliding cylinder; 38. First connecting plate; 39. Swinging mechanism; 310. Second connecting plate; 391. Second motor; 392. Turntable; 393. Support column; 394. Third sliding cylinder; 395. Rotating plate; 396. Connecting rod; 4. Positioning mechanism; 41. Protective shell; 42. Support plate; 43. Third motor; 44. Gear; 45. Rack; 5. Bearing plate; 6. Clamping mechanism; 7. Position adjustment mechanism; 8. Telescopic mechanism; 81. First telescopic arm; 82. Second telescopic arm. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0028] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a welding device for steel structure nodes, including I-beams 1, beams 2 and welding mechanism 3. The beams 2 are installed between two sets of I-beams 1, and the welding mechanism 3 is installed on the outside of the beams 2.

[0029] The welding mechanism 3 includes a sliding table 31, which is installed on both sides of the crossbeam 2. A first motor 32 is fixedly connected to the top of the sliding table 31. The drive shaft of the first motor 32 passes through the sliding table 31. A lead screw 33 is fixedly connected to the drive end of the first motor 32. A first sliding cylinder 34 is threadedly connected to the outer wall of the lead screw 33. A welding gun 35 is fixedly connected to the outer wall of the first sliding cylinder 34. Two sets of support rods 36 are fixedly connected to the outer wall of the sliding table 31. A second sliding cylinder 37 is slidably connected to the outer wall of the support rods 36. A first connecting plate 38 is fixedly connected between the two sets of second sliding cylinders 37. A second connecting plate 310 is fixedly connected to the outer wall of each set of second sliding cylinders 37. Both sets of second connecting plates 310 are fixedly connected to the first sliding cylinder 34. The other end of the welding gun 35 is connected to the first connecting plate 38.

[0030] It should be noted that, along the length of the support rod 36, the first connecting plate 38 and the second connecting plate 310 are positioned from top to bottom as follows: first connecting plate 38, second connecting plate 310. The sliding table 31 has a frame structure.

[0031] It should be further explained that the two ends of the lead screw 33 are rotatably connected to the sliding table 31. Through the threaded transmission relationship between the lead screw 33 and the first sliding cylinder 34, when the lead screw 33 is driven by the first motor 32 to rotate, the first sliding cylinder 34 can move vertically up and down along the length of the lead screw 33. Figure 4 As shown, a set of first connecting plates 38 and two sets of second connecting plates 310 together form a triangular stable support structure, which makes it difficult for the welding gun 35 installed on the triangular structure to deviate or slide during the lifting and adjustment process, effectively ensuring the welding accuracy and welding quality of the steel structure node. At the same time, relying on the triangular stable support structure, during the lifting and lowering movement of the first sliding cylinder 34, it can synchronously drive the two sets of second sliding cylinders 37 to lift and lower along the support rod 36, realizing the synchronous linkage adjustment of the overall structure.

[0032] It should be further explained that the welding gun 35 is adjusted synchronously with the triangular stabilizing structure throughout the entire process. During the lifting and lowering movement, the welding nozzle of the welding gun 35 is always directly facing the steel structure node formed by the splicing of the I-beam 1 and the crossbeam 2. It can continuously align with the welding area to ensure that the steel at the splicing node of the I-beam 1 and the crossbeam 2 can be fully heated, melted, and fused together, thus ensuring the welding forming effect and connection firmness of the steel structure node.

[0033] It should be further explained that before the welding device is activated, the I-beam 1 and the crossbeam 2 are initially fitted and positioned. Then, the welding mechanism 3 is assembled to both sides of the crossbeam 2. After assembly, the welding nozzle of the welding gun 35 is precisely aligned with the steel structure splicing node. Subsequently, the first motor 32 is started, and the power output and action switching are achieved by the threaded transmission between the lead screw 33 and the first sliding cylinder 34. When the first motor 32 drives the lead screw 33 to rotate in the forward direction, the lead screw 33 drives the first sliding cylinder 34 to move upward along the length direction of the lead screw 33. Under the linkage of the second connecting plate 310 and the first connecting plate 38, the second sliding cylinder 37 slides upward along the length direction of the support rod 36, driving the welding gun 35 to move upward as a whole. When the first motor 32 drives the lead screw 33 to rotate in the opposite direction, the lead screw 33 drives the first sliding cylinder 34 to move downward along the length of the lead screw 33, and all the linkage components move downward synchronously, thereby driving the welding gun 35 to move downward as a whole. At this point, the welding gun 35 completes the welding operation of the steel structure node.

[0034] It should be further explained that this welding device significantly reduces the safety hazards of high-altitude construction by replacing traditional manual high-altitude welding operations with automated welding, while also reducing the labor intensity of operators. Relying on the transmission structure composed of motors and lead screws, it significantly improves the overall construction efficiency while ensuring welding quality.

[0035] In one embodiment of the present invention, in order to further improve the welding quality of the welding mechanism 3, multi-angle swing adjustment of the welding gun 35 is achieved, such as... Figure 5 , Figure 6 and Figure 7 As shown, the welding device also includes a swing mechanism 39, which is installed outside the first connecting plate 38. The swing mechanism 39 includes a second motor 391, which is fixedly connected to the top of the first connecting plate 38. The drive shaft of the second motor 391 passes through the first connecting plate 38. A turntable 392 is fixedly connected to the drive end of the second motor 391. A support column 393 is fixedly connected to the turntable 392 at a position away from its center. A third sliding cylinder 394 is fixedly connected to the other end of the support column 393. Rotating plates 395 are rotatably connected to both sides of the first connecting plate 38. A connecting rod 396 is fixedly connected to the side of the two sets of rotating plates 395 away from the first connecting plate 38. The third sliding cylinder 394 is sleeved on the outer wall of the connecting rod 396 and can slide along the length of the connecting rod 396. The other ends of the two sets of rotating plates 395 are rotatably connected to the welding gun 35.

[0036] It should be added that, such as Figure 7 As shown, a groove is provided on the connecting rod 396 along its length direction. A protrusion is fixedly connected inside the third sliding cylinder 394. The protrusion is located in the groove, and the protrusion and the groove are in sliding engagement with each other. By restricting the protrusion and the groove, the third sliding cylinder 394 can only slide axially along the length direction of the connecting rod 396 and cannot rotate around the connecting rod 396. That is, the third sliding cylinder 394 will not rotate.

[0037] It should be noted that the connecting rod 396 is installed between the turntable 392 and the welding gun 35, and is close to one end of the welding gun 35. However, the connecting rod 396 does not contact the welding gun 35. During the operation of the swing mechanism 39, the swing mechanism 39 will drive the welding gun 35 to move back and forth along the length of the first connecting plate 38.

[0038] It should be further explained that the specific operation of the swing mechanism 39 is as follows: during the up-and-down movement of the welding gun 35, the second motor 391 is started simultaneously, causing the second motor 391 to drive the turntable 392 to rotate. While rotating, the turntable 392 will drive the support column 393 to perform a circular motion. The support column 393 will drive the third sliding cylinder 394 to perform a circular motion. At this time, the third sliding cylinder 394 will slide back and forth along the length direction of the connecting rod 396. As the third sliding cylinder 394 and the support column 393 perform a uniform circular motion together, the third sliding cylinder 394 will pull the connecting rod 396 to perform four different movements. Here, the length direction of the first connecting plate 38 is defined as the left and right directions, and the width direction of the first connecting plate 38 is defined as the front and rear directions. The specific operation is as follows: like Figure 5As shown, the initial position is defined as the position of the support column 393 at the frontmost horizontal side of the turntable 392, the initial position is defined as the position of the third sliding cylinder 394 at the frontmost end of the connecting rod 396, the initial position is defined as the position of the rotating plate 395 with the same axial direction as the drive shaft of the second motor 391, and the initial position is defined as the position where the welding gun 35 does not swing. First configuration: Support column 393, third sliding cylinder 394 and connecting rod 396 are all in the initial position; The second type: such as Figure 7 As shown, when the support column 393 rotates 90 degrees from the initial position, the third sliding cylinder 394 slides from the initial position to the middle of the connecting rod 396. At the same time, the connecting rod 396 begins to swing to the right. When the connecting rod 396 swings to the right to the highest point, the welding gun 35 completes the action of moving to the right. The third type: When the support column 393 continues to rotate 90 degrees, the third sliding cylinder 394 slides from the middle of the connecting rod 396 to the rear end of the connecting rod 396, the connecting rod 396 begins to swing to the left, and at the same time the connecting rod 396 moves from the rightmost position to the initial position, at which point the welding gun 35 returns to the initial position; The fourth type: When the support column 393 continues to rotate 90 degrees, the third sliding cylinder 394 slides from the rear end of the connecting rod 396 to the middle of the connecting rod 396, the connecting rod 396 swings to the left to the highest point, and at the same time the connecting rod 396 moves from the initial position to the leftmost position. At this time, the welding gun 35 completes the action of moving to the left. Finally, when the support column 393 rotates 360 degrees back to its initial position, the third sliding cylinder 394 completes one complete back-and-forth reciprocating motion, and the connecting rod 396 completes one complete left-and-right reciprocating swing motion. At this time, the welding gun 35 returns to its initial position.

[0039] It should be noted that by adding the swing mechanism 39, the welding gun 35 can swing back and forth regularly from side to side on the basis of the original vertical lifting and lowering welding. This enables the welding mechanism 3 to realize the fish scale welding process, which improves the weld density and structural strength of the steel structure nodes compared with the traditional linear welding method.

[0040] In one embodiment of the present invention, the welding device further includes a positioning mechanism 4, which is installed on the top of the I-beam 1. The positioning mechanism 4 is connected to the welding mechanism 3. The positioning mechanism 4 includes a protective shell 41. A support plate 42 is fixedly connected to the bottom of the protective shell 41. A third motor 43 is fixedly connected inside the protective shell 41. The drive shaft of the third motor 43 passes through the support plate 42. A gear 44 is fixedly connected to the drive end of the third motor 43. Two sets of racks 45 are slidably connected inside the support plate 42. The other end of the racks 45 is fixedly connected to the sliding table 31. Both sets of racks 45 are meshed with the gears 44.

[0041] It should be noted that both sets of sliding tables 31 are slidably connected to the outer wall of the support plate 42, and a sliding groove is provided along the length of the support plate 42. The inner walls of the two sets of sliding tables 31 are fixedly connected with protrusions, which are located in the sliding grooves. The cross-sections of the protrusions and the sliding grooves are both "T" shaped structures.

[0042] It should be noted that after the welding of the current steel structure node is completed, the welding mechanism 3 needs to be switched to the next steel structure node for welding. First, the third motor 43 is started, driving the gear 44 to rotate. The gear 44 drives the rack 45 and the sliding table 31 to move together. The two sets of sliding tables 31 move away from each other, gradually separating the sliding table 31 from the crossbeam 2, releasing the clamping operation on the crossbeam 2, and completing the preliminary disengagement action of the welding mechanism 3. When the welding mechanism 3 moves to the position of the steel structure node to be welded, then... After the support plate 42 is moved to be in contact with the crossbeam 2, the third motor 43 is started to run in reverse. The gear 44 rotates in reverse, and through meshing transmission, it drives the two sets of racks 45 to move towards each other, thereby pulling the sliding tables 31 on both sides closer together, so that the sliding tables 31 are re-fitted on the outside of the crossbeam 2. The alignment and installation of the welding mechanism 3 is completed quickly, and finally the welding nozzle of the welding gun 35 is aligned with the steel structure to be welded node, thereby realizing the automatic alignment of the welding mechanism 3 and the steel structure to be welded node, avoiding the disadvantage of needing manual adjustment, and improving the overall welding efficiency.

[0043] In one embodiment of the present invention, the welding device further includes a support plate 5, the lower surface of which is in contact with the upper surface of the I-beam 1. The welding device also includes a clamping mechanism 6, which is fixedly connected to both ends of the support plate 5. The clamping mechanism 6 includes a first driving component and a gripper, the gripper being fixedly connected to the execution end of the first driving component. The first driving component and the gripper adopt existing technology and will not be described in detail.

[0044] It should be further explained that the welding mechanism 3 is fixedly connected to the top of the bearing plate 5, thereby achieving the overall installation and fitting or overall separation of the welding device from the steel structure. When welding work is required, the first drive component of the clamping mechanism 6 drives the jaws to open and clamp the I-beam 1, fixing the bearing plate 5 to the top of the I-beam 1 to prevent the steel structure node from shaking during welding. Then, the position of the welding mechanism 3 is adjusted in conjunction with the positioning mechanism 4 so that the welding mechanism 3 is aligned with the steel structure node to be welded. Finally, the welding mechanism 3 is started to carry out the welding operation. After all steel structure nodes are welded, the jaws of the clamping mechanism 6 are released, and the bearing plate 5 is released from clamping and fixing the crossbeam 2. Then, the bearing plate 5 can drive the overall welding device to separate from the steel structure node, realizing the separation of the overall welding device.

[0045] It should be noted that the clamping mechanism 6 and the bearing plate 5 enable the overall installation or separation of the welding device, which allows for rapid assembly and disassembly of the welding device and shortens the construction preparation time.

[0046] In one embodiment of the present invention, the welding device further includes a telescopic mechanism 8, which is slidably connected to the top of the support plate 5. The telescopic mechanism 8 includes a sliding plate, a sleeve, a second drive assembly, a first telescopic arm 81, and a second telescopic arm 82. The sliding plate is slidably connected to the upper surface of the support plate 5. A groove is formed on the top of the support plate 5 along its length. A protrusion is fixedly connected to the bottom of the sliding plate, located inside the groove and forming a sliding guide engagement with the groove. Both the protrusion and the groove have a "T" shaped cross-section. The sleeve... The first telescopic arm 81 is rotatably connected to the sleeve and fixedly connected to the top of the sliding plate. The second drive assembly is used to drive the first telescopic arm 81 to rotate around the central axis of the sleeve. The outer wall of the first telescopic arm 81 is slidably connected to the second telescopic arm 82, that is, the first telescopic arm 81 and the second telescopic arm 82 are combined to form a telescopic rod structure. The telescopic rod is fixedly connected to the inside of the telescopic rod. This telescopic rod is existing technology and will not be described in detail. The welding device also includes a position adjustment mechanism 7, which is installed on the top of the support plate 5.

[0047] It should be noted that in this embodiment, the second drive component is a servo motor, and the first telescopic arm 81 is fixedly connected to the drive shaft of the servo motor. In other embodiments, the second drive component may also be a stepper motor, a geared motor, or other rotary drive mechanism.

[0048] It should be further explained that, in this embodiment, the position adjustment mechanism 7 includes a third drive component, which is fixedly connected to the top of the support plate 5. A gear is fixedly connected to the drive end of the third drive component, and the gear is rotatably connected to the support plate 5. A rack is slidably connected to the top of the support plate 5, and meshing teeth are evenly arranged on one side of the rack, which can mesh with the gear to realize the conversion between rotational motion and linear motion, providing power for the linear adjustment of the position adjustment mechanism 7. In other embodiments, the position adjustment mechanism 7 can also use conventional linear drive mechanisms such as cylinders or hydraulic cylinders, which can be flexibly adapted and replaced according to the actual construction conditions. One end of the rack is fixedly connected to the sleeve, and the other end of the second telescopic arm 82 is fixedly connected to the protective shell 41.

[0049] It should be further explained that, after the welding operation of a single steel structure node is completed, when switching to the next steel structure node for welding, the third motor 43 is first started to drive the two sliding tables 31 away from each other, separating the sliding tables 31 from the current crossbeam 2, releasing the positioning lock of the welding mechanism 3. Then, the second drive assembly at the sleeve is started to drive the first telescopic arm 81, the second telescopic arm 82, the positioning mechanism 4, and the welding mechanism 3 to rotate as a whole away from the center of the crossbeam 2, until the welding mechanism 3 is completely separated from the welding position of the current single steel structure node. Subsequently, the position adjustment mechanism 7 is started to drive the sliding plate to slide linearly along the top groove of the bearing plate 5. The sliding plate drives the telescopic mechanism 8, the positioning mechanism 4, and the welding mechanism 3 to move as a whole, realizing the switching of the welding position. When the welding mechanism 3 moves to the next steel structure node... When the position is reached, the position adjustment mechanism 7 stops driving, and then the second drive assembly at the sleeve is activated, causing the whole structure to flip in the opposite direction. At the same time, the cylinder inside the telescopic rod drives the relative extension distance of the first telescopic arm 81 and the second telescopic arm 82, adapting to the required welding radius and welding angle of the positioning mechanism 4 and the welding mechanism 3, to meet the welding nodes of steel structures of different specifications and positions. After the welding mechanism 3 moves to the welding position, the bottom of the support plate 42 is in contact with the crossbeam 2. Then, the third motor 43 is activated again in the opposite direction, so that the two sets of sliding tables 31 move towards each other and are in contact with the outer side of the next crossbeam 2, quickly completing the alignment and locking of the welding mechanism 3, so that the welding gun 35 is accurately aligned with the steel structure node to be welded. Finally, the welding mechanism 3 is activated to carry out the welding operation of the next node, effectively realizing the automated operation of steel structure node welding.

[0050] In another embodiment of the present invention, a welding method for a welding device for welding steel structure nodes in a building is disclosed, comprising the following steps: Step S1: Splice and attach the I-beam 1 and the crossbeam 2 to complete the preliminary pre-installation and positioning of the steel structure welding joint; Step S2: Place the welding device on top of the I-beam 1, operate the clamping mechanism 6 to clamp the I-beam 1, and fix the entire welding device. Step S3: Start the position adjustment mechanism 7 to drive the rack rod to slide, drive the telescopic mechanism 8 to move horizontally as a whole, and start the second drive component to drive the first telescopic arm 81 to rotate and cooperate with the second telescopic arm 82 to extend and retract, so that the welding gun 35 is aligned with the node to be welded. Then start the third motor 43, which drives the rack 45 to move towards each other through the gear 44, and drives the sliding table 31 to clamp the crossbeam 2 to complete the locking. Step S4: Start the first motor 32 and the second motor 391, and the welding gun 35 moves up and down and swings to complete the node welding operation using fish scale welding. Step S5: Release the locking of the positioning mechanism 4, move the welding mechanism 3 to the next node through the position adjustment mechanism 7 and the telescopic mechanism 8, reposition and lock the equipment; Step S6: Complete the welding of all nodes in sequence. After the operation is completed, release the clamping mechanism 6 and dismantle the entire welding device.

[0051] It should be further explained that, firstly, the I-beam 1 and the crossbeam 2 are spliced ​​and attached in advance to complete the preliminary pre-installation and positioning of the welding node. Then, the entire equipment is placed on top of the I-beam 1, and the load-bearing plate 5 is attached to support the load. The I-beam 1 is clamped by the clamping mechanism 6 to achieve stable installation of the welding device.

[0052] After the welding device is fixed, the positioning mechanism 4, the position adjustment mechanism 7, and the telescopic mechanism 8 are adjusted together. The position and angle of the welding mechanism 3 are adjusted by using the telescopic arm structure and the sliding structure, so that the welding gun 35 is accurately aligned with the beam and column splice welding node and fits in place.

[0053] Next, the positioning mechanism 4 is activated for positioning and locking. After alignment, the welding mechanism 3 is activated. The first motor 32 drives the lead screw 33 to rotate, and the threaded transmission drives the first sliding cylinder 34 and the second sliding cylinder 37 to rise and fall synchronously along the support rod 36, so as to realize the vertical uniform speed movement of the welding gun 35. At the same time, the second motor 391 drives the turntable 392 and the support column 393 to perform circular motion, driving the third sliding cylinder 394 to slide along the connecting rod 396, and the linkage rotating plate 395 to swing, so that the welding gun 35 swings back and forth from left to right, and completes the automated fish scale welding in conjunction with the vertical movement.

[0054] After a single node welding is completed, the third motor 43 drives the gear 44 and rack 45 to separate and unlock the sliding tables 31 on both sides. Then, the position adjustment mechanism 7 and the telescopic mechanism 8 work together with the first telescopic arm 81 and the second telescopic arm 82 to complete the translation, flipping and radius adjustment of the equipment, switch the welding mechanism 3 to the next welding node and re-align and lock it to achieve continuous welding.

[0055] After all nodes have been welded, loosen clamping mechanism 6, release the entire machine from its fixation, and dismantle the welding device as a whole.

[0056] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A welding device for steel structure nodes in buildings, characterized in that, It includes I-beams (1), crossbeams (2) and welding mechanism (3), wherein the crossbeams (2) are installed between two sets of I-beams (1) and the welding mechanism (3) is installed on the outside of the crossbeams (2); The welding mechanism (3) includes a sliding table (31), which is installed on both sides of the crossbeam (2). A first motor (32) is fixedly connected to the top of the sliding table (31). A lead screw (33) is fixedly connected to the drive end of the first motor (32). A first sliding cylinder (34) is threadedly connected to the outer wall of the lead screw (33). A welding gun (35) is connected to the outer wall of the first sliding cylinder (34). Two sets of support rods (36) are fixedly connected to the outer wall of the sliding table (31). A second sliding cylinder (37) is slidably connected to the outer wall of the support rods (36). A first connecting plate (38) is fixedly connected between the two sets of second sliding cylinders (37). A second connecting plate (310) is fixedly connected to the outer wall of each set of second sliding cylinders (37). Both sets of second connecting plates (310) are fixedly connected to the first sliding cylinder (34). The other end of the welding gun (35) is connected to the first connecting plate (38). It also includes a swing mechanism (39), which is installed outside the first connecting plate (38). The swing mechanism (39) includes a second motor (391), which is fixedly connected to the top of the first connecting plate (38). The drive end of the second motor (391) is fixedly connected to a turntable (392). The turntable (392) is fixedly connected to a support column (393) at a position away from its center. The other end of the support column (393) is fixedly connected to a third sliding cylinder (394). Rotating plates (395) are rotatably connected to both sides of the first connecting plate (38). A connecting rod (396) is fixedly connected to the side of the two sets of rotating plates (395) away from the first connecting plate (38). The other end of the two sets of rotating plates (395) is rotatably connected to the welding gun (35). The third sliding cylinder (394) is slidably connected to the connecting rod (396). After alignment, the welding mechanism (3) is started. The first motor (32) drives the lead screw (33) to rotate. The threaded transmission drives the first sliding cylinder (34) and the second sliding cylinder (37) to rise and fall synchronously along the support rod (36), so that the welding gun (35) moves vertically at a uniform speed. At the same time, the second motor (391) drives the turntable (392) and the support column (393) to make circular motion, driving the third sliding cylinder (394) to slide along the connecting rod (396), and the linkage rotating plate (395) swings, so that the welding gun (35) swings back and forth, and completes the automated fish scale welding in conjunction with the vertical motion.

2. The welding device for steel structure nodes in a building according to claim 1, characterized in that, The welding device also includes a support plate (5), the lower surface of which is in contact with the upper surface of the I-beam (1). The welding device also includes a positioning mechanism (4), which is installed on the top of the support plate (5). The positioning mechanism (4) is connected to the welding mechanism (3). The positioning mechanism (4) includes a protective shell (41), a support plate (42) is fixedly connected to the bottom of the protective shell (41), a third motor (43) is fixedly connected inside the protective shell (41), a gear (44) is fixedly connected to the drive end of the third motor (43), and two sets of racks (45) are slidably connected inside the support plate (42). The other end of the racks (45) is fixedly connected to the sliding table (31), and both sets of racks (45) are meshed with the gear (44).

3. The welding device for steel structure nodes in a building according to claim 2, characterized in that, The welding device also includes a clamping mechanism (6), which is fixedly connected to both ends of the support plate (5).

4. The welding device for steel structure nodes in a building according to claim 3, characterized in that, The clamping mechanism (6) includes a first drive component and a gripper, the gripper being fixedly connected to the execution end of the first drive component.

5. A welding device for steel structure nodes according to claim 4, the welding device further includes a telescopic mechanism (8), the telescopic mechanism (8) is slidably connected to the top of the bearing plate (5), the telescopic mechanism (8) includes a sliding plate, a sleeve, a second drive assembly, a first telescopic arm (81) and a second telescopic arm (82), the sliding plate is slidably connected to the upper surface of the bearing plate (5), the top of the bearing plate (5) is provided with a sliding groove, the bottom of the sliding plate is fixedly connected with a protrusion, the protrusion is located inside the sliding groove and forms a sliding guide cooperation with the sliding groove, the sleeve is fixedly connected to the top of the sliding plate, the second drive assembly is fixedly connected to the sleeve, the second drive assembly is used to drive the first telescopic arm (81) to rotate around the central axis of the sleeve, the first telescopic arm (81) is rotatably connected to the sleeve, and the outer wall of the first telescopic arm (81) is slidably connected to the second telescopic arm (82).

6. The welding device for steel structure nodes in a building according to claim 5, characterized in that, The welding device also includes a position adjustment mechanism (7), which includes a third drive assembly. The third drive assembly is fixedly connected to the top of the support plate (5). A gear two is fixedly connected to the drive end of the third drive assembly. The gear two is rotatably connected to the support plate (5). A rack is slidably connected to the top of the support plate (5). The gear two meshes with the rack.

7. A welding device for steel structure nodes in a building according to claim 6, characterized in that, One end of the rack is fixedly connected to the sleeve, and the other end of the second telescopic arm (82) is fixedly connected to the protective shell (41).

8. The welding method of the welding device for steel structure joints in a building according to claim 7, characterized in that, Includes the following steps: Step S1: Splice and attach the I-beam (1) to the crossbeam (2) to complete the preliminary pre-installation and positioning of the steel structure welding node; Step S2: Place the welding device on top of the I-beam (1), operate the clamping mechanism (6) to clamp the I-beam (1), and fix the entire welding device; Step S3: Start the position adjustment mechanism (7) to drive the rack rod to slide, drive the telescopic mechanism (8) to move horizontally as a whole, and start the second drive assembly to drive the first telescopic arm (81) to rotate and cooperate with the second telescopic arm (82) to extend and retract, so that the welding gun (35) is aligned with the node to be welded. Then start the third motor (43), drive the rack (45) to move towards each other through the gear (44), drive the sliding table (31) to clamp the crossbeam (2) to complete the locking. Step S4: Start the first motor (32) and the second motor (391), and the welding gun (35) moves up and down and swings to complete the node welding operation using fish scale welding; Step S5: Release the locking of the positioning mechanism (4), move the welding mechanism (3) to the next node through the position adjustment mechanism (7) and the telescopic mechanism (8), reposition and lock the equipment; Step S6: Complete the welding of all nodes in sequence. After the operation is completed, release the clamping mechanism (6) and dismantle the entire welding device.

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