An automatic welding device for large steel structure joints

Abstract

The present invention discloses an automatic welding device for large steel structure joints, which relates to the technical field of steel structure welding; it includes an automatic welding torch component, a rotary fine adjustment component is installed on the automatic welding torch component, and an upper edge detection component is installed on the rotary fine adjustment component; the upper edge detection component is used to detect the upper edge of the steel beam; the rotary fine adjustment component is used to adjust the angle of the upper edge detection component; a position testing component is installed on the rotary fine adjustment component; the position testing component is used to detect the welding position; the upper edge detection component can be used to ensure that welders first weld the lower edge groove of the steel beam during welding work, which can improve the welding quality of this structure and avoid welding hazards caused by preferentially welding the upper edge of the steel beam; to solve the problems that the current automatic welding device for steel structure joints has poor control over the welding sequence of the steel beam, which is likely to affect the welding quality of the steel beam and is not convenient for real-time testing of the cable state for prompting.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure welding, and particularly to an automatic welding device for large steel structure joints. Background Technique

[0002] In actual steel structure construction and installation work, usually, after high-strength bolts are used to install steel beams, the upper and lower edges of the steel beams are connected to parts such as steel structure columns by welding to ensure the safety of installation construction. With the development of welding technology, automatic welding is widely used at present and no longer requires manual clamping with electrode holders. For example, the automatic wire-feeding CO2 welding machine is widely used due to its automatic wire-feeding feature. In actual steel beam welding work, in order to reduce the influence of stress, it is usually necessary to weld the lower edge of the steel beam first and then the upper edge of the steel beam. Currently, the automatic welding device for steel structure joints is usually manually held for welding operations, which is not convenient for preventing misoperations by workers and is prone to welding the upper edge of the steel beam first, resulting in poor control of the welding sequence of the steel beam, affecting the welding quality of the steel beam. At the same time, the cable length of the welding torch is relatively long. When the cable is excessively twisted during use, it is easy to affect the wire-feeding speed of the welding wire, increase the wire-feeding resistance of the welding wire, and affect the welding precision of the welding wire, and even cause wire clogging. It is not convenient to detect the cable status in real time for prompting. When manually welding the steel beam, the backing plate is easily omitted, affecting welding safety.

[0003] Therefore, we propose an automatic welding device for large steel structure joints. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic welding device for large steel structure joints to solve the problems in the above background technique that the current automatic welding device for steel structure joints has poor control of the welding sequence of the steel beam, is prone to affecting the welding quality of the steel beam, and is not convenient to detect the cable status in real time for prompting.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An automatic welding device for large steel structure joints, including an automatic welding torch assembly, a rotary fine-tuning assembly is installed on the automatic welding torch assembly, and an upper edge detection assembly is installed on the rotary fine-tuning assembly; the upper edge detection assembly is used to detect the upper edge of the steel beam; the rotary fine-tuning assembly is used to adjust the angle of the upper edge detection assembly; a position detection assembly is installed on the rotary fine-tuning assembly; the position detection assembly is used to detect the welding position; a backing plate in-place detection assembly is installed on the position detection assembly; the backing plate in-place detection assembly is used to detect the backing plate on the upper edge of the steel beam; a wire anti-twist assembly is installed on the automatic welding torch assembly; the wire anti-twist assembly is used to reduce the wire-feeding resistance of the welding wire; the automatic welding torch assembly includes: a CO2 welding torch head and a warning lamp, and a warning lamp is fixedly installed on the CO2 welding torch head; the end of the CO2 welding torch head is a bent structure.

[0006] Preferably, the automatic welding torch assembly includes: a nozzle and a nozzle ball head. The nozzle is threadedly connected to the MIG welding torch head; a nozzle ball head is provided outside the nozzle.

[0007] Preferably, the rotary fine-tuning assembly includes: an adjusting ball sleeve, a positioning bolt, a detection mounting arm, a return spring, and a power-on switch. The adjusting ball sleeve is sleeved on the nozzle ball head; a positioning bolt is threadedly connected to the adjusting ball sleeve; the end of the positioning bolt is pressed against the outside of the nozzle ball head; the detection mounting arm is fixedly installed on the adjusting ball sleeve; a return spring is sleeved on the detection mounting arm; a row of ratchet-shaped grooves is provided on the upper part of the detection mounting arm; the end of the return spring is connected to the detection mounting arm; a power-on switch is fixedly installed at the top end of the detection mounting arm.

[0008] Preferably, the upper edge detection assembly includes: a detection cylinder, a switch spring, a pressing disc, a positioning ratchet block, and an electromagnet. The detection cylinder is slidably sleeved on the detection mounting arm; the bottom of the detection cylinder is connected to the other end of the return spring; a switch spring is sleeved inside the detection cylinder; the bottom end of the switch spring is fixedly installed with a pressing disc, and the pressing disc is slidably installed inside the detection cylinder; a positioning ratchet block is slidably installed on the detection cylinder; a row of ratchet teeth is provided on the side of the positioning ratchet block; the positioning ratchet block is used for inserting into a row of ratchet-shaped grooves on the upper part of the detection mounting arm; an electromagnet is fixedly installed on the detection cylinder; the electromagnet magnetically attracts the positioning ratchet block; a spring is provided between the positioning ratchet block and the electromagnet; the top of the detection cylinder is a disc-shaped structure; the top of the detection cylinder is used for fitting against the upper edge of the steel beam.

[0009] Preferably, the position testing assembly includes: a support plate, a secondary handle, and a delay switch. The support plate is fixedly installed on the side of the adjusting ball sleeve; a secondary handle is fixedly installed at the end of the support plate; a delay switch is fixedly installed on the secondary handle; the delay switch is electrically connected to the electromagnet.

[0010] Preferably, the liner in-place testing assembly includes: an in-place detection shaft and a fitting spring. The in-place detection shaft is slidably installed on the side of the support plate; the end of the in-place detection shaft is a bevel structure; a fitting spring is sleeved on the support plate; the end of the fitting spring is connected to the in-place detection shaft; the other end of the fitting spring is fixedly installed inside the support plate.

[0011] Preferably, the liner in-place testing assembly further includes: a power connection elastic piece and a power connection column. The power connection elastic piece is fixedly installed on the in-place detection shaft; the power connection column is fixedly installed inside the support plate; the power connection elastic piece is aligned with the power connection column; the power connection elastic piece, the aligned power connection column, the power-on switch, and the welding switch on the MIG welding torch head are connected in series to the power supply.

[0012] Preferably, the wire anti-twist member includes: a power connection coil, a welding gun cable, a rear gun housing, and a protective sleeve. The power connection coil is fixedly installed at the tail of the MIG welding gun head; the welding gun cable is fixedly installed on the MIG welding gun head; the tail of the welding gun cable is connected to the rear gun housing, and the rear gun housing is used to connect to the welding machine; the outside of the welding gun cable is sleeved with a protective sleeve, and the end of the protective sleeve is connected to the side of the rear gun housing.

[0013] Preferably, the wire anti-twist member further includes: a traction wire and a connecting collar. There is one turn of the traction wire, and the end of one turn of the traction wire is fixedly installed on the side of the rear gun housing; the other end of one turn of the traction wire is fixedly installed with a connecting collar, and the connecting collar is sleeved on the welding gun cable; the side of the connecting collar is connected to the other end of the protective sleeve; the traction wire is located inside the protective sleeve.

[0014] Preferably, the wire anti-twist member further includes: a wire twisting tension spring and a reminder elastic piece. The wire twisting tension spring is sleeved on the welding gun cable; the end of the wire twisting tension spring is connected to the power connection coil; the other end of the wire twisting tension spring is fixedly installed on the connecting collar; two reminder elastic pieces are fixedly installed on the connecting collar, and the two reminder elastic pieces are respectively of a V-shaped structure; the end of the reminder elastic piece elastically fits the power connection coil; the reminder elastic piece, the power connection coil, and the indicator light are connected in series to the power supply.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The present invention adopts an upper edge detection member, which can be used to ensure that when welding personnel are performing welding work, they first weld the lower edge groove of the steel beam, which can improve the welding quality of this structure, avoid welding hidden dangers caused by preferentially welding the upper edge of the steel beam. As a welding operation specification in the steel structure industry, the practice of welding the lower edge first and then the upper edge can avoid problems of deformation and stress concentration caused by welding; by using a time-delay switch, it can ensure that after the welding of the lower edge of the steel beam is completed, the welding of the upper edge can be carried out smoothly, ensuring the continuity of the welding work, and the two-handed grip is more stable. At the same time, the two-handed welding operation also further prevents the staff from directly pressing down the detection cylinder for power connection in violation of regulations, because it is necessary to cooperate with the limit of the positioning spiny block to ensure stable welding, restricting the two-handed operation of the staff and ensuring the priority of welding the lower edge.

[0017] Adopting a backing plate in-place test member can ensure that the staff has installed the backing plate before performing welding work, avoiding direct welding without a backing plate or the backing plate not being installed in place, which affects the welding quality. Welding work can only be carried out after the backing plate is detected to be in place, preventing illegal operations and improving the construction quality of steel structure buildings.

[0018] The use of a wire anti-twist component can improve the detection quality of the welding torch cable state, which is easily overlooked during the actual use of the welding torch, avoid problems such as bending or excessive twisting of the welding torch cable, the detection method is simple and reliable, does not affect the flexibility of the normal bending of the welding torch cable, and can directly give a prompt at the same time, improve the safety of the welding wire and the circuit, reduce the wire clogging rate, because the welding wire needs to be smoothly sent to the welding part through the wire feeding mechanism. Brief Description of the Drawings

[0019] Figure 1 Schematic diagram of the overall structure of an automatic welding device for large steel structure joints of the present invention;

[0020] Figure 2 Schematic diagram of the rear structure of an automatic welding device for large steel structure joints of the present invention;

[0021] Figure 3 Cross-sectional view of the internal structure of an automatic welding device for large steel structure joints of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the automatic welding torch part of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the rotary fine-tuning part of the present invention;

[0024] Figure 6 For the present invention Figure 3 Enlarged view of the structure of area B in the present invention;

[0025] Figure 7 For the present invention Figure 1 Enlarged view of the structure of area C in the present invention;

[0026] Figure 8 For the present invention Figure 3 Enlarged view of the structure of area D in the present invention;

[0027] Figure 9 Schematic diagram of the structure of the wire anti-twist component of the present invention;

[0028] Figure 10 For the present invention Figure 3 Enlarged view of the structure of area F in the present invention;

[0029] Figure 11 Schematic diagram of the composition and welding position of the steel structure joint to be welded of the present invention.

[0030] In the figure: 1. Automatic welding torch component; 101. CO₂ welding torch head; 1011. Indicator light; 102. Nozzle; 1021. Nozzle ball head; 2. Rotary fine-tuning component; 201. Adjusting ball sleeve; 202. Positioning bolt; 203. Detection and installation arm; 204. Return spring; 205. Power-on switch; 3. Upper edge detection component; 301. Detection cylinder; 302. Switch spring; 303. Pressing disc; 304. Positioning ratchet block; 305. Electromagnet; 4. Position testing component; 401. Support plate; 402. Sub-grip; 403. Delay switch; 5. Liner in-place testing component; 501. In-place detection shaft; 502. Fitting spring; 503. Electric contact elastic piece; 504. Electric contact column; 6. Wire anti-twist component; 601. Electric contact ring; 602. Welding torch cable; 603. Rear torch housing; 604. Protective sleeve; 605. Traction wire; 606. Connecting collar; 607. Wire twist tension spring; 608. Indicator elastic piece. Specific implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1: Please refer to Figures 1 to 10 as shown:

[0033] The present invention provides a technical solution: a large steel structure joint automatic welding device, including an automatic welding torch component 1, a rotary fine-tuning component 2 is installed on the automatic welding torch component 1, and an upper edge detection component 3 is installed on the rotary fine-tuning component 2; the upper edge detection component 3 is used to detect the upper edge of the steel beam; the rotary fine-tuning component 2 is used to adjust the angle of the upper edge detection component 3; a position testing component 4 is installed on the rotary fine-tuning component 2; the position testing component 4 is used to detect the welding position; a liner in-place testing component 5 is installed on the position testing component 4; the liner in-place testing component 5 is used to detect the liner on the upper edge of the steel beam; a wire anti-twist component 6 is installed on the automatic welding torch component 1; the wire anti-twist component 6 is used to reduce the wire feeding resistance; the automatic welding torch component 1 includes: a CO₂ welding torch head 101 and an indicator light 1011, and the indicator light 1011 is fixedly installed on the CO₂ welding torch head 101; the end of the CO₂ welding torch head 101 is of a bent structure.

[0034] Among them, the automatic welding torch part 1 includes: a nozzle 102 and a nozzle ball head 1021. The nozzle 102 is threadedly connected to the CO2 welding torch head 101; a nozzle ball head 1021 is provided on the outer side of the nozzle 102; the rotation fine-tuning part 2 includes: an adjusting ball sleeve 201, a positioning bolt 202, a detection mounting arm 203, a return spring 204, and a power-on switch 205. The adjusting ball sleeve 201 is sleeved on the nozzle ball head 1021; a positioning bolt 202 is threadedly connected to the adjusting ball sleeve 201; the end of the positioning bolt 202 is pressed and fitted on the outer side of the nozzle ball head 1021; the detection mounting arm 203 is fixedly installed on the adjusting ball sleeve 201; a return spring 204 is sleeved on the detection mounting arm 203; a row of sprocket-shaped grooves is provided on the upper part of the detection mounting arm 203; the end of the return spring 204 is connected to the detection mounting arm 203; a power-on switch 205 is fixedly installed at the top end of the detection mounting arm 203; the upper edge detection part 3 includes: a detection cylinder 301, a switch spring 302, a pressing disc 303, a positioning sprocket-shaped block 304, and an electromagnet 305. The detection cylinder 301 is slidably sleeved on the detection mounting arm 203; the bottom of the detection cylinder 301 is connected to the other end of the return spring 204; a switch spring 302 is sleeved inside the detection cylinder 301; the bottom end of the switch spring 302 is fixedly installed with a pressing disc 303, and the pressing disc 303 is slidably installed inside the detection cylinder 301; a positioning sprocket-shaped block 304 is slidably installed on the detection cylinder 301; a row of sprocket-shaped teeth is provided on the side of the positioning sprocket-shaped block 304; the positioning sprocket-shaped block 304 is used for plugging into a row of sprocket-shaped grooves on the upper part of the detection mounting arm 203; an electromagnet 305 is fixedly installed on the detection cylinder 301; the electromagnet 305 magnetically attracts the positioning sprocket-shaped block 304; a spring is provided between the positioning sprocket-shaped block 304 and the electromagnet 305; the top of the detection cylinder 301 is of a disc-shaped structure;The top of the detection tube 301 is used to fit the upper edge of the steel beam. The upper edge detection piece 3 can be used to ensure that the welder first welds the lower edge groove of the steel beam when performing welding work, which can improve the welding quality of this structure and avoid welding hazards caused by preferentially welding the upper edge of the steel beam. As a standard welding operation in the steel structure industry, the practice of welding the lower edge first and then the upper edge can avoid deformation and stress concentration problems caused by welding. Heat will be generated during the welding process, causing the steel to expand. If the upper edge is welded first, unnecessary deformation or stress may occur at the lower edge due to the thermal expansion of the steel, thereby affecting the stability and safety of the entire structure. Welding the lower edge first can allow the steel to have more space for natural thermal deformation when it expands due to heat, thereby reducing the impact on the upper edge welding. This structure utilizes the I-beam structure of the steel beam itself. The use of the upper edge detection piece 3 can ensure that the lower edge welding is performed first in actual welding work, otherwise normal power-on welding cannot be performed. At the same time, the upper edge detection piece 3 used in this structure can perform simple angle fine-tuning, which can be more suitable for actual welding adjustment needs. The structure is more reasonable. In actual welding operation, the distance between the end of the welding wire of the two-guard welding gun head 101 and the top of the detection tube 301 is smaller than the spacing between the upper and lower wing plates of the steel beam I-beam. When the welding wire of the two-guard welding gun head 101 is first aligned with the lower edge of the I-beam, it will penetrate into the inner side of the I-beam together with the rotating fine-tuning part 2 and the upper edge detection part 3. At this time, the top of the detection tube 301 will press against the lower side of the wing plate located above, compressing the reset spring 204. When the detection tube 301 is pressed down, it will drive the lower pressure plate 303 to squeeze the power switch 205. At this time, the switch The spring 302 will be compressed. When the power switch 205 is compressed, the staff can hold and press the welding switch on the two-protection welding gun head 101 to perform welding work normally, ensuring that the lower edge is welded first. At the same time, when the detection installation arm 203 needs to be fine-tuned, the positioning bolt 202 can be rotated and loosened, and the ball sleeve 201 can be rotated to adjust the angle. The two-protection welding gun head 101 is used to automatically output welding wire for welding. The technology is mature and reliable. At the same time, the automatic welding wire output method can reduce the inconvenience of traditional manual replacement of welding rods and improve the efficiency of automatic welding. ;

[0035] Among them, the position test piece 4 includes: a support plate 401, a secondary handle 402, and a delay switch 403. The support plate 401 is fixedly installed on the side of the adjustment ball sleeve 201; a secondary handle 402 is fixedly installed at the end of the support plate 401; a delay switch 403 is fixedly installed on the secondary handle 402; the delay switch 403 is electrically connected to the electromagnet 305. By using the secondary handle 402 of the position test piece 4, the stability of the structure during welding can be improved. At the same time, the delay switch 403 can ensure that the welding of the upper edge can be smoothly carried out after the welding of the lower edge of the steel beam is completed, ensuring the continuity of the welding work. The operation of this structure is simple, and the two-handed grip is more stable. At the same time, the two-handed welding operation can further prevent the staff from directly pressing down the detection cylinder 301 for power connection in violation of regulations, because directly pressing down the detection cylinder 301 cannot complete stable welding work, and the limit of the positioning sprag 304 is required to ensure the stable pressing and power-on of the power-on switch 205, restricting the two-handed operation of the staff to ensure that the lower edge is welded first. When the staff welds the lower edge, hold the secondary handle 402 and press the delay switch 403. At this time, the electromagnet 305 is powered off, and the positioning sprag 304 loses magnetic attraction. Under the extrusion of the switch spring 302, it can be inserted into the detection installation arm 203 for positioning. At this time, the staff keeps holding the secondary handle 402, and the detection cylinder 301 will also drive the pressing plate 303 to keep pressing the power-on switch 205, and the staff can smoothly carry out the welding work on the upper edge of the steel beam.

[0036] Among them, the lining in-place test piece 5 includes: an in-place detection shaft 501 and a fitting spring 502. The in-place detection shaft 501 is slidably installed on the side of the support plate 401. The end of the in-place detection shaft 501 is of an inclined surface structure. A fitting spring 502 is sleeved on the support plate 401. The end of the fitting spring 502 is connected to the in-place detection shaft 501. The other end of the fitting spring 502 is fixedly installed on the inner side of the support plate 401. The lining in-place test piece 5 further includes: a power connection elastic piece 503 and a power connection column 504. The power connection elastic piece 503 is fixedly installed on the in-place detection shaft 501. The power connection column 504 is fixedly installed on the inner side of the support plate 401. The power connection elastic piece 503 is aligned with the power connection column 504. The power connection elastic piece 503, the aligned power connection column 504, the power-on switch 205 and the welding switch on the MIG torch head 101 are connected in series to the power supply. Using the lining in-place test piece 5 can ensure that the staff has installed the lining before welding work, avoiding direct welding without the lining and affecting the welding quality. Welding work can only be carried out after the lining is detected in place, preventing illegal operations and improving the construction quality of steel structure buildings. As an auxiliary material for steel structure welding, the lining plays a crucial role in the welding process. The use of the lining can reduce the defect rate of the weld seam, thereby improving the overall quality of welding. This is because the lining can be closely attached to the base material, providing a stable support for the weld seam, making the welding process more stable and reducing the possibility of defects such as cracks and slag inclusions in the weld seam. Before the staff carry out welding work, the lining is spot-welded in batches at the joints first.

[0037] Embodiment 2, on the basis of Embodiment 1, the wire anti-twist member 6 includes: a power connection coil 601, a welding torch cable 602, a rear torch housing 603, and a protective sleeve 604. The power connection coil 601 is fixedly installed at the tail of the MIG / MAG welding torch head 101; the welding torch cable 602 is fixedly installed on the MIG / MAG welding torch head 101; the tail of the welding torch cable 602 is connected to the rear torch housing 603, and the rear torch housing 603 is used to connect to the welding machine; a protective sleeve 604 is sleeved outside the welding torch cable 602, and the end of the protective sleeve 604 is connected to the side of the rear torch housing 603; the wire anti-twist member 6 further includes: a traction wire 605 and a connecting collar 606. One loop of the traction wire 605 is provided, and the end of one loop of the traction wire 605 is fixedly installed on the side of the rear torch housing 603; the other end of one loop of the traction wire 605 is fixedly installed with a connecting collar 606, and the connecting collar 606 is sleeved on the welding torch cable 602; the side of the connecting collar 606 is connected to the other end of the protective sleeve 604; the traction wire 605 is located inside the protective sleeve 604; the wire anti-twist member 6 further includes: a wire torsion spring 607 and a reminder elastic piece 608. The wire torsion spring 607 is sleeved on the welding torch cable 602; the end of the wire torsion spring 607 is connected to the power connection coil 601; the other end of the wire torsion spring 607 is fixedly installed on the connecting collar 606; two reminder elastic pieces 608 are fixedly installed on the connecting collar 606, and the two reminder elastic pieces 608 are respectively of a V-shaped structure; the end of the reminder elastic piece 608 elastically fits the power connection coil 601;The prompting shrapnel 608, the power connection coil 601 and the prompting lamp 1011 are connected in series to the power supply. The use of the welding wire anti-torsion part 6 can improve the detection quality of the state of the welding torch cable 602, which is easily overlooked during the actual use of the welding torch, and avoid the problems of bending or excessive torsion of the welding torch cable 602. The detection method is simple and reliable, and does not affect the normal bending flexibility of the welding torch cable 602. At the same time, it can directly give a prompt, improve the safety of the welding wire and the circuit, reduce the welding wire clogging rate. The welding wire needs to be smoothly sent to the welding part through the wire feeding mechanism. If the wire feeding hose inside the welding torch cable 602 is twisted or stretched, it will cause an increase in the wire feeding resistance of the components inside the wire feeding mechanism, such as the wire feeding wheel, and even deformation. The deformation of the welding wire is likely to increase the frictional resistance when moving from positions such as the contact tip. This increase in resistance will cause the welding wire to get stuck during the wire feeding process, and even unable to pass through the wire feeding mechanism smoothly, ultimately resulting in the clogging of the welding wire. After the rear gun shell 603 is docked to the welding machine, if the welding operator causes excessive bending of the welding torch cable 602 during use, at this time, the traction wire 605 is located outside the welding torch cable 602. The traction wire 605 located in the outer circle of the bend has a larger bending diameter, and correspondingly will pull the connecting collar 606, driving the prompting shrapnel 608 to separate from the power connection coil 601. At this time, the prompting lamp 1011 can turn off to give a prompt. Similarly, if the welding torch cable 602 is radially rotated and twisted, the welding wire torsion spring 607 will elastically pull the connecting collar 606. At this time, the traction wire 605 will be twisted by the welding torch cable 602 to form a spiral state and bend. The minimum distance between the two ends of the traction wire 605 is reduced, and it will also pull the connecting collar 606 to move. The prompting lamp 1011 can turn off to give a prompt. At this time, the staff needs to adjust in time.;

[0038] The working principle of this embodiment: the staff holds the double-protection welding gun head 101, and needs to align the welding wire of the double-protection welding gun head 101 with the lower edge of the I-beam first. Due to the structural form of the I-beam, when welding the lower edge, it is necessary to weld the lower wing plate and beam columns and other nodes on both sides of the web of the I-beam respectively. When the welding wire of the double-protection welding gun head 101 is aligned with the lower edge of the I-beam first, it will penetrate into the inner side of the I-beam together with the rotating fine-tuning part 2 and the upper edge detection part 3. At this time, the top of the detection cylinder 301 will press against the lower side of the wing plate located above, compressing the reset spring 204. When the detection cylinder 301 is pressed down, it will drive the lower pressure plate 303 to squeeze the power-on switch 205. At this time, the switch spring 302 will be compressed. When the power-on switch 205 is During compression, the staff can normally hold and press the welding switch on the second-protection welding gun head 101 to carry out welding work, ensuring that the lower edge is welded first. At the same time, when fine-tuning the detection installation arm 203 is needed, the positioning bolt 202 can be rotated to loosen the positioning bolt 202, and the adjusting ball sleeve 201 can be rotated to adjust the angle; when the staff welds the lower edge, the staff holds the auxiliary grip 402 and presses the delay switch 403. At this time, the electromagnet 305 is powered off, and the positioning thorn block 304 loses its magnetic attraction. Under the squeeze of the switch spring 302, the detection installation arm 203 can be inserted for positioning. At this time, the staff keeps holding the auxiliary grip 402, and the detection cylinder 301 will also drive the lower pressure plate 303 to keep squeezing the power-on switch 205, so that the staff can smoothly carry out the upper edge of the steel beam. When the welding head 101 is in place, the welding wire 605 is in a state of being electrically connected to the welding gun head 101, and ... On the outside of 602, the traction wire 605 located in the curved outer circle has a larger bending diameter, which will correspondingly pull the connecting ring 606, driving the prompt spring 608 to separate from the power connection ring 601. At this time, the prompt light 1011 can be turned off for prompting. Similarly, if the welding gun cable 602 is radially rotated and twisted, the welding wire torsion spring 607 will elastically pull the connecting ring 606. At this time, the traction wire 605 is twisted by the welding gun cable 602 to form a spiral state and bend. The minimum distance between the two ends of the traction wire 605 is reduced, and the connecting ring 606 will be pulled to move, driving the prompt spring 608 to separate from the power connection ring 601. At this time, the prompt light 1011 can be turned off for prompting. At this time, the staff needs to make timely adjustments, which is also called breaking force.

[0039] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for a large steel structure node, comprising an automatic welding gun component (1), wherein a rotating fine-tuning component (2) is installed on the automatic welding gun component (1), characterized in that: An upper edge detection member (3) is mounted on the rotating fine-tuning member (2); the upper edge detection member (3) is used to detect the upper edge of the steel beam; the rotating fine-tuning member (2) is used to adjust the angle of the upper edge detection member (3); A position testing piece (4) is mounted on the rotary fine-tuning piece (2); the position testing piece (4) is used to detect the welding position; The position test piece (4) is equipped with a lining plate in place test piece (5); the lining plate in place test piece (5) is used to detect the lining plate at the upper edge of the steel beam; the automatic welding gun part (1) is equipped with a welding wire anti-twist piece (6); the welding wire anti-twist piece (6) is used to reduce the resistance of welding wire conveying; The rotary fine-tuning member (2) comprises: an adjusting ball sleeve (201), a positioning bolt (202), a detection mounting arm (203), a reset spring (204) and a power switch (205); the upper edge detection member (3) comprises: a detection cylinder (301), a switch spring (302), a lower pressure plate (303), a positioning thorn block (304) and an electromagnet (305); the detection cylinder (301) is slidably sleeved on the detection mounting arm (203); the bottom of the detection cylinder (301) is connected to the other end of the reset spring (204); the switch spring (302) is sleeved inside the detection cylinder (301); the lower pressure plate (304) is fixedly mounted on the bottom end of the switch spring (302). 3), and the lower pressure plate (303) is slidably mounted inside the detection cylinder (301); a positioning thorn block (304) is slidably mounted on the detection cylinder (301); a row of thorn teeth are arranged on the side of the positioning thorn block (304); the positioning thorn block (304) is used to be plugged into a row of thorn grooves on the upper part of the detection installation arm (203); an electromagnet (305) is fixedly mounted on the detection cylinder (301); the electromagnet (305) magnetically attracts the positioning thorn block (304); a spring is arranged between the positioning thorn block (304) and the electromagnet (305); the top of the detection cylinder (301) is a disc-shaped structure; the top of the detection cylinder (301) is used to fit the upper edge of the steel beam; The automatic welding gun component (1) comprises: a two-way welding gun head (101), a warning light (1011), a nozzle (102) and a nozzle ball head (1021); the two-way welding gun head (101) is fixedly mounted with the warning light (1011); the end of the two-way welding gun head (101) is a bent structure; the nozzle (102) is threadedly connected to the two-way welding gun head (101); and the nozzle ball head (1021) is provided on the outside of the nozzle (102); The adjusting ball sleeve (201) is sleeved on the nozzle ball head (1021); a positioning bolt (202) is threadedly connected to the adjusting ball sleeve (201); an end of the positioning bolt (202) is pressed and fitted on the outside of the nozzle ball head (1021); the detection mounting arm (203) is fixedly mounted on the adjusting ball sleeve (201); a return spring (204) is sleeved on the detection mounting arm (203); a row of thorn-shaped grooves is provided on the upper part of the detection mounting arm (203); an end of the return spring (204) is connected to the detection mounting arm (203); a power switch (205) is fixedly mounted on the top of the detection mounting arm (203); The position testing piece (4) comprises: a support plate (401), a secondary handle (402) and a time delay switch (403); the support plate (401) is fixedly mounted on the side of the adjusting ball sleeve (201); the secondary handle (402) is fixedly mounted on the end of the support plate (401); the time delay switch (403) is fixedly mounted on the secondary handle (402); and the time delay switch (403) is electrically connected to the electromagnet (305).

2. The large-scale steel structure node automatic welding equipment according to claim 1 is characterized in that: The lining plate in-place test piece (5) comprises: an in-place detection shaft (501) and a fitting spring (502); the in-place detection shaft (501) is slidably mounted on the side of the support plate (401); the end of the in-place detection shaft (501) is an inclined surface structure; the fitting spring (502) is sleeved on the support plate (401); the end of the fitting spring (502) is connected to the in-place detection shaft (501); and the other end of the fitting spring (502) is fixedly mounted on the inner side of the support plate (401).

3. The large-scale steel structure node automatic welding equipment according to claim 2 is characterized in that: The lining plate in-place test piece (5) further comprises: an electric connection spring (503) and an electric connection post (504); the electric connection spring (503) is fixedly mounted on the in-place detection shaft (501); the electric connection post (504) is fixedly mounted on the inner side of the support plate (401); the electric connection spring (503) is aligned with the electric connection post (504); the electric connection spring (503), the electric connection post (504), the power switch (205) and the welding switch on the second protection welding gun head (101) are connected in series with a power supply.

4. The large-scale steel structure node automatic welding equipment according to claim 1 is characterized in that: The welding wire anti-twist component (6) comprises: a power connection ring (601), a welding gun cable (602), a rear gun shell (603) and a protective sleeve (604); the power connection ring (601) is fixedly mounted on the rear end of the two-protection welding gun head (101); the welding gun cable (602) is fixedly mounted on the two-protection welding gun head (101); the rear end of the welding gun cable (602) is connected to the rear gun shell (603), and the rear gun shell (603) is used for butt welding; the outer side of the welding gun cable (602) is sleeved with a protective sleeve (604), and the end of the protective sleeve (604) is connected to the side of the rear gun shell (603).

5. The large-scale steel structure node automatic welding equipment according to claim 4 is characterized in that: The welding wire anti-twist component (6) further comprises: a traction wire (605) and a connecting ferrule (606); the traction wire (605) is provided with a loop, and the end of the loop traction wire (605) is fixedly mounted on the side of the rear gun housing (603); the other end of the loop traction wire (605) is fixedly mounted with a connecting ferrule (606), and the connecting ferrule (606) is sleeved on the welding gun cable (602); the side of the connecting ferrule (606) is connected to the other end of the protective sleeve (604); the traction wire (605) is located inside the protective sleeve (604).

6. The large-scale steel structure node automatic welding equipment according to claim 5 is characterized by: The welding wire anti-twist component (6) further comprises: a welding wire torsion tension spring (607) and a prompt spring (608), wherein the welding wire torsion tension spring (607) is sleeved on the welding gun cable (602); an end of the welding wire torsion tension spring (607) is connected to the power connection ring (601); the other end of the welding wire torsion tension spring (607) is fixedly mounted on the connecting ring (606); two prompt springs (608) are fixedly mounted on the connecting ring (606), and the two prompt springs (608) are respectively of V-shaped structure; an end of the prompt spring (608) elastically fits the power connection ring (601); and the prompt spring (608), the power connection ring (601) and the prompt light (1011) are connected in series to a power supply.

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