Intelligent auxiliary slag floating bridge structure member plasma welding device and welding method thereof

Abstract

The application relates to the technical field of intelligent manufacturing equipment industry, in particular to a kind of intelligent auxiliary slag floating bridge structure piece plasma welding device and welding method thereof, including pedestal, positioning mechanism for maintaining ladder type bridge assembly state on the pedestal, further comprising: two linear drive modules mounted on the pedestal and cross-moving block connected with the two linear drive modules, assembly seat movably arranged between the two cross-moving blocks, two groups of lifting mechanisms arranged on the two cross-moving blocks are connected with the assembly seat, and welding manipulator for executing welding action is movably arranged at the bottom of the assembly seat; in the welding process, the displacement change of the pressing arm and the limiting wheel is consistent with the displacement change of the welding manipulator in the length direction of the pedestal, and the welding means of the follow-up type fastening treatment can effectively improve the overall structural strength and stability of the bridge in the intelligent manufacturing equipment industry, and provides protection for the long-term use performance and safety of the bridge.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent manufacturing equipment industry, in particular to a bridge structure plasma welding device for assisting slag floating and a welding method thereof. BACKGROUND

[0002] In the intelligent manufacturing equipment industry, cable bridge is an important supporting structure for power transmission and communication lines, playing a crucial role. It not only effectively protects the cable, but also provides convenience for the laying, maintenance and management of the cable. Taking ladder-type cable bridge as an example, its structural design includes two opposite ladder sides and a plurality of equidistantly distributed crosspieces connecting the two ladder sides. In the production process of ladder-type cable bridge, the welding process is a key link to ensure the integrity and stability of the bridge structure, which requires precise welding of the ladder sides and crosspieces.

[0003] The rapid development of intelligent manufacturing equipment industry brings new opportunities and challenges to welding technology. Plasma welding, as an efficient and precise welding technology, has been widely used in the intelligent manufacturing equipment industry. By assisting slag floating in an intelligent way, plasma welding can significantly improve the welding quality. This intelligent assistance may use sensors to monitor the slag state during welding and through specific control mechanisms, such as adjusting welding current, voltage or gas flow, to facilitate the smooth floating of slag, thereby reducing welding defects and ensuring the stability and reliability of the welding process. In the intelligent manufacturing equipment industry, this advanced welding technology is an important means to improve production efficiency and product quality.

[0004] However, in the welding process of ladder-type cable bridge, the two ladder sides (in the shape of "L") need to be placed opposite to each other, and a plurality of crosspieces (in the shape of a long strip) need to be placed equidistantly between them. The existing clamping means usually only sets a few clamping points on the side of the ladder side, which may cause uneven distribution of clamping force at each crosspiece position. Due to the unevenness of clamping force, the contact pressure between the crosspiece and the ladder side will be different, which directly affects the heat conduction and fusion effect during welding. In the areas with less clamping force, defects such as poor fusion, porosity or incomplete penetration may occur during welding; while in the areas with excessive clamping force, material deformation or welding stress concentration may occur. These inconsistent welding effects not only reduce the overall structural strength and stability of the bridge, but also affect its long-term performance and safety. SUMMARY

[0005] The present application aims to provide a bridge structure plasma welding device for assisting slag floating and a welding method thereof to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A smart assisted slag flotation plasma welding device for cable tray structures includes a base and a positioning mechanism disposed on the base for maintaining the assembled state of the ladder-type cable tray, and further includes:

[0008] Two linear drive modules are mounted on the base and transverse blocks are connected to the two linear drive modules respectively. An assembly seat is movably provided between the two transverse blocks. The assembly seat is connected to two sets of lifting mechanisms respectively provided on the two transverse blocks. A welding robot arm that performs welding actions is movably provided at the bottom of the assembly seat.

[0009] Two clamping arms are movably mounted on the side of the mounting base via two sets of elastic telescopic mechanisms, and multiple limiting wheels are movably mounted below the two transverse blocks. The limiting wheels are connected to the transverse blocks via a movable connecting mechanism. The clamping arms are located above the crossbar, and the limiting wheels are located on the side of the ladder away from the crossbar.

[0010] During welding, the linear drive module drives the transverse block to move intermittently along the length of the base, so that the welding robot corresponds to multiple crossbars one by one. The lifting mechanism can drive the assembly seat to move the welding robot toward the crossbars, and make the clamping arm and the limit wheel apply pressure to the crossbars and the ladder edge respectively.

[0011] As a further embodiment of the present invention: a guide member is fixedly provided on the side of the transverse block away from the linear drive module, and the lifting mechanism includes a vertical arm that is slidably connected to the transverse block through the guide member and a hydraulic cylinder fixed on the transverse block. The movable end of the hydraulic cylinder is fixed to the vertical arm, and the mounting base is fixed to the vertical arm.

[0012] As a further embodiment of the present invention: the elastic telescopic mechanism includes a vertical rod fixed to the side of the mounting base by a protrusion block, a sleeve slidably fitted with the vertical rod, and a spring sleeved on the outer periphery of the vertical rod. The two ends of the spring are respectively connected to the protrusion block and the sleeve. The clamping arm is fixedly installed at the end of the sleeve away from the protrusion block. A driven component is provided between the sleeve and the movable connection mechanism. The driven component can move along the length direction of the mounting base.

[0013] As a further embodiment of the present invention: a slide rail is fixedly installed on the upper part of the mounting base, the driven component includes a slider that is slidably fitted in the slide rail, a sliding fit structure is provided between the slider and the sleeve, and the slider is also connected to the movable connecting mechanism.

[0014] As a further embodiment of the present invention: the sliding fit structure includes a connecting plate that fixes the two sleeves together and a driven plate that is fixedly connected to the slider. A protruding post is fixed on the connecting plate, and a groove adapted to the protruding post is provided on the driven plate. The protruding post extends into the groove and is slidably connected to the driven plate. The groove includes a vertical through groove and an inclined through groove. When the protruding post is located in the inclined through groove and moves relative to the driven plate, it can cause the driven plate to drive the slider to slide toward the middle position of the slide.

[0015] As a further embodiment of the present invention: the movable connection mechanism includes a guide plate fixed to the bottom of the transverse block and a telescopic arm assembly that slides and engages with the guide plate, and the limiting wheel is installed at the end of the telescopic arm assembly away from the guide plate;

[0016] The telescopic arm assembly is provided with a guide groove, and a connecting block is slidably fitted in the guide groove. The connecting block is fixedly connected to the slider through the follower arm.

[0017] As a further embodiment of the present invention: the positioning mechanism includes two sets of side limiting structures disposed on the base and distributed along the length direction of the base, and four sets of end limiting structures disposed on the base and arranged opposite to each other in pairs.

[0018] As a further embodiment of the present invention: the base is provided with an installation groove along its own width direction, and the side limiting structure includes two limiting blocks symmetrically and movably disposed in the installation groove. The two limiting blocks protrude from the upper surface of the base and can move closer or further away from each other in the installation groove.

[0019] As a further embodiment of the present invention: the end limiting structure includes a guide rail fixed on the base, a movable seat slidably fitted on the guide rail, and a cylinder rotatably mounted on the base, wherein the movable end of the cylinder is hinged to the movable seat;

[0020] A limit arm is rotatably mounted on the movable seat, and the limit arm can be driven by a drive motor mounted on the movable seat to perform a swinging action.

[0021] A plasma welding method for cable tray structural components, using the aforementioned welding apparatus, includes the following steps:

[0022] Step 1: Assemble the ladder sides and crossbars, with the positioning mechanism limiting the sides and ends of the cable tray.

[0023] Step 2: The linear drive module drives the welding robot to the top of the crossbar, and the lifting mechanism drives the welding robot to move down and approach the crossbar. The clamping arm and the limit wheel apply pressure to the crossbar and the edge of the ladder respectively.

[0024] Step 3: The welding robot moves along the length of the assembly base and performs welding operations at both ends of the crossbar.

[0025] Step four: The lifting mechanism drives the welding robot to lift up, and the linear drive module changes the position of the welding robot in the length direction of the base. The welding robot then welds each crossbar one by one.

[0026] Step 5: After welding is completed, the positioning mechanism releases the cable tray from its positioning state, and the cable tray is removed from the base.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] This invention features a clamping arm and a limiting wheel, with the clamping arm positioned above the crossbar and the limiting wheel located on the side of the ladder away from the crossbar. During each descent of the welding robot, before welding begins, the elastic telescopic mechanism and the movable connecting mechanism are triggered, allowing the clamping arm and the limiting wheel to apply pressure to the crossbar and the ladder edge sequentially. Specifically, the clamping arm applies downward pressure to the crossbar, improving the tightness of the connection between the bottom surface of the crossbar and the ladder edge, while the limiting wheel applies pressure to the side of the ladder edge, improving the tightness of the connection between the end face of the crossbar and the ladder edge.

[0029] Secondly, during the welding process, the clamping arm and the limiting wheel move in the same direction as the welding robot along the length of the base. The clamping arm and the limiting wheel can tighten the connection of the current welding crossbar, thus ensuring the consistency of the welding effect of each crossbar. This avoids differences in the connection state between each crossbar and the ladder edge due to uneven clamping force distribution, which could lead to problems such as poor fusion, porosity or incomplete penetration, material deformation, or welding stress concentration. In the intelligent manufacturing equipment industry, this follow-up tightening welding method of the present invention can effectively improve the overall structural strength and stability of the cable tray, providing a guarantee for the long-term performance and safety of the cable tray. Attached Figure Description

[0030] Figure 1 A schematic diagram of one embodiment of a plasma welding device for bridge structure components with intelligent assisted slag flotation.

[0031] Figure 2 This is a schematic diagram of another aspect of an embodiment of a plasma welding device for bridge structure components with intelligent assisted slag flotation.

[0032] Figure 3 This is a schematic diagram of another angle of one embodiment of a plasma welding device for bridge structure components with intelligent assisted slag flotation.

[0033] Figure 4 A front view of one embodiment of a plasma welding apparatus for bridge structure components with intelligent assisted slag flotation.

[0034] Figure 5 A side view of one embodiment of a plasma welding apparatus for bridge structure components with intelligent assisted slag flotation.

[0035] Figure 6 for Figure 3 Enlarged view of the structure at point A in the middle.

[0036] Figure 7 for Figure 3 Enlarged view of the structure at point B.

[0037] Figure 8 A schematic diagram of the linear drive module in one embodiment of a plasma welding device for intelligent assisted slag flotation of bridge structure components.

[0038] Figure 9 An exploded view of the elastic telescopic mechanism in one embodiment of a plasma welding device for a bridge structure component with intelligent assisted slag flotation.

[0039] Figure 10 for Figure 9 A structural diagram from another angle.

[0040] In the diagram: 1. Base; 101. Mounting slot; 2. Limiting block; 3. Cylinder; 4. Guide rail; 5. Movable seat; 6. Drive motor; 7. Limiting arm; 8. Linear drive module; 9. Lateral block; 901. Guide component; 10. Vertical arm; 11. Hydraulic cylinder; 12. Assembly seat; 1201. Protruding block; 13. Spring; 14. Vertical rod; 15. Sleeve; 16. Connecting plate; 1601. Protruding column; 17. Slide rail; 18. Slider; 19. Driven plate; 1901. Vertical through slot; 1902. Inclined through slot; 20. Follower arm; 21. Guide plate; 22. Telescopic arm assembly; 2201. Guide slot; 23. Connecting block; 24. Lateral seat; 25. Welding robot; 26. Clamping arm; 27. Limiting wheel. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0043] Please see Figures 1-10 In this embodiment of the invention, a smart assisted slag floating plasma welding device for cable tray structures includes a base 1, i.e., a positioning mechanism disposed on the base 1 for maintaining the assembled state of the ladder-type cable tray, and further includes:

[0044] Two linear drive modules 8 are mounted on the base 1 and transverse blocks 9 are connected to the two linear drive modules 8 respectively. An assembly seat 12 is movably provided between the two transverse blocks 9. The assembly seat 12 is connected to two sets of lifting mechanisms respectively provided on the two transverse blocks 9. A welding robot 25 for performing welding actions is movably provided at the bottom of the assembly seat 12.

[0045] Two clamping arms 26 are movably mounted on the side of the mounting base 12 via two sets of elastic telescopic mechanisms, and multiple limiting wheels 27 are movably mounted below the two transverse blocks 9. The limiting wheels 27 are connected to the transverse blocks 9 via a movable connecting mechanism. The clamping arms 26 are located above the crossbar, and the limiting wheels 27 are located on the side of the ladder away from the crossbar.

[0046] During welding, the linear drive module 8 drives the transverse block 9 to move intermittently along the length of the base 1, so that the welding robot 25 corresponds to multiple crossbars one by one. The lifting mechanism can drive the assembly seat 12 to move the welding robot 25 closer to the crossbars, and make the clamping arm 26 and the limit wheel 27 apply pressure to the crossbars and the ladder edge respectively.

[0047] It should be further explained that the linear drive module 8 is an application of existing technology, namely, using a lead screw drive to realize the positional movement of the welding robot 25 in the length direction of the base 1. Specifically, an assembly groove is provided at the bottom of the assembly base 12, and a transverse sliding seat 24 is slidably disposed within the assembly groove. The welding robot 25 is mounted on the bottom of the transverse sliding seat 24. Similarly, the transverse sliding seat 24 can be driven by the lead screw located in the assembly groove to move along the length direction of the assembly base 12 (i.e., the width direction of the base 1 and the length direction of the crossbars). Therefore, during welding, the linear drive module 8 enables the welding robot 25 to shift along the length direction of the base 1, allowing the welding robot 25 to correspond to each crossbar. The movement of the transverse sliding seat 24 along the length direction of the assembly base 12 allows the welding robot 25 to approach the two sides of the ladder, thereby welding both ends of the crossbars.

[0048] In addition, it should be noted that the welding robot 25 has a certain degree of flexibility and can perform actions such as extension, retraction, and rotation to meet the welding requirements of the crossbar and the edge of the ladder. As for the specific model of the welding robot 25, this application will not elaborate further, as long as it meets the actual welding requirements.

[0049] Furthermore, during welding, the ladder-type cable tray is first assembled, with the two ladder sides placed on the base 1 and the distance between them properly controlled. Then, multiple crossbars are placed on the two ladder sides according to the required positions. Then, the positioning mechanism is controlled to limit the ends and sides of the ladder sides respectively, so that the assembly state of the ladder-type cable tray remains stable.

[0050] Then, welding begins, that is, the linear drive module 8 drives the transverse block 9 to move intermittently, so that the welding robot 25 reaches above each crossbar. The movement of the transverse seat 24 at the bottom of the assembly seat 12 enables the welding robot 25 to correspond to the two ends of the crossbar.

[0051] The lifting mechanism drives the welding robot 25 to move down and approach the crossbar. During this process, the elastic telescopic mechanism is triggered, causing the clamping arm 26 to contact the crossbar and apply downward pressure to the crossbar, thereby improving the tightness of the connection between the bottom surface of the crossbar and the edge of the ladder. Subsequently, the movable connection mechanism is triggered, causing the limiting wheel 27 to move towards the outside of the edge of the ladder (at this time, the limiting wheel 27 corresponds to the crossbar), applying pressure to the side of the edge of the ladder, thereby improving the tightness of the connection between the end face of the crossbar and the edge of the ladder.

[0052] Therefore, by setting a clamping arm 26 and a limiting wheel 27, with the clamping arm 26 located above the crossbar and the limiting wheel 27 located on the side of the ladder away from the crossbar, the elastic telescopic mechanism and the movable connection mechanism are triggered during each descent of the welding robot 25 before welding begins. This allows the clamping arm 26 and the limiting wheel 27 to apply pressure to the crossbar and the ladder edge respectively. Specifically, the clamping arm 26 applies downward pressure to the crossbar, improving the tightness of the connection between the bottom surface of the crossbar and the ladder edge, while the limiting wheel 27 applies pressure to the side of the ladder edge, improving the tightness of the connection between the end face of the crossbar and the ladder edge.

[0053] Secondly, during the welding process, the clamping arm 26 and the limiting wheel 27 move in the same direction as the welding robot 25 along the length of the base 1. The clamping arm 26 and the limiting wheel 27 can fasten the connection of the current welding crossbar, thereby ensuring the consistency of the welding effect of each crossbar. This avoids the problem of poor fusion, porosity or incomplete penetration, material deformation or welding stress concentration caused by uneven distribution of clamping force. This follow-up fastening welding method of the present invention can effectively improve the overall structural strength and stability of the cable tray, and provide a guarantee for the long-term performance and safety of the cable tray. In the intelligent manufacturing equipment industry, it can effectively improve product quality and production efficiency.

[0054] Please refer to it again. Figure 9 The lateral block 9 is fixedly provided with a guide member 901 on the side away from the linear drive module 8. The lifting mechanism includes a vertical arm 10 that is slidably connected to the lateral block 9 through the guide member 901 and a hydraulic cylinder 11 fixed on the lateral block 9. The movable end of the hydraulic cylinder 11 is fixed to the vertical arm 10, and the mounting base 12 is fixed to the vertical arm 10.

[0055] During operation, after the assembly seat 12 reaches the crossbar, the clamping arm 26 is located above the crossbar, the limiting wheel 27 is located on the side of the ladder away from the crossbar and corresponds to the crossbar, and the movable end of the hydraulic cylinder 11 extends, which can drive the vertical arm 10 to slide relative to the horizontal moving block 9, causing the assembly seat 12 to drive the welding robot 25 to approach the crossbar so as to perform welding operations.

[0056] Please refer to it again. Figure 6 and Figure 9The elastic telescopic mechanism includes a vertical rod 14 fixed to the side of the mounting base 12 by a protrusion 1201, a sleeve 15 slidably fitted with the vertical rod 14, and a spring 13 sleeved on the outer periphery of the vertical rod 14. The two ends of the spring 13 are respectively connected to the protrusion 1201 and the sleeve 15. The clamping arm 26 is fixedly installed at the end of the sleeve 15 away from the protrusion 1201. A driven component is provided between the sleeve 15 and the movable connection mechanism. The driven component can move along the length direction of the mounting base 12.

[0057] The hydraulic cylinder 11 operates, driving the welding robot 25 to move downwards and approach the crossbar. During this process, the clamping arm 26 moves closer to the crossbar. After the clamping arm 26 contacts the crossbar, as the mounting base 12 continues to move downwards, the clamping arm 26 remains stationary. The upright 14 and the sleeve 15 slide relative to each other, and the spring 13 is gradually compressed. As the compression of the spring 13 increases, the downward pressure of the clamping arm 26 on the crossbar gradually increases to ensure the tightness of the connection between the bottom surface of the crossbar and the edge of the ladder.

[0058] When the compression of the spring 13 increases to a certain extent, the driven component is triggered and moves along the length of the mounting base 12, driving the movable connecting mechanism to move. This causes the movable connecting mechanism to move the limiting wheel 27 toward the edge of the ladder, applying pressure to the side of the ladder edge and improving the tightness of the connection between the end face of the crossbar and the edge of the ladder.

[0059] A slide rail 17 is fixedly installed on the upper part of the mounting base 12. The driven component includes a slider 18 that is slidably fitted within the slide rail 17. A sliding fit structure is provided between the slider 18 and the sleeve 15. The slider 18 is also connected to the movable connecting mechanism. The sliding fit structure includes a connecting plate 16 that is fixedly connected to the two sleeves 15 and a driven plate 19 that is fixedly connected to the slider 18. A protrusion 1601 is fixed on the connecting plate 16. A groove adapted to the protrusion 1601 is provided on the driven plate 19. The protrusion 1601 extends into the groove and is slidably connected to the driven plate 19. The groove includes a vertical through groove 1901 and an inclined through groove 1902. When the protrusion 1601 is located in the inclined through groove 1902 and moves relative to the driven plate 19, it can cause the driven plate 19 to drive the slider 18 to slide towards the middle position of the slide rail 17.

[0060] Please refer to it again. Figure 9 and Figure 10 The movable connection mechanism includes a guide plate 21 fixed to the bottom of the transverse block 9 and a telescopic arm assembly 22 that slides and engages with the guide plate 21. The limiting wheel 27 is installed at the end of the telescopic arm assembly 22 away from the guide plate 21.

[0061] The telescopic arm assembly 22 is provided with a guide groove 2201, and a connecting block 23 is slidably fitted in the guide groove 2201. The connecting block 23 is fixedly connected to the slider 18 through the follower arm 20.

[0062] Specifically, after the clamping arm 26 contacts the crossbar, the upright 14 and the sleeve 15 slide relative to each other, causing the spring 13 to be compressed. During this process, the protrusion 1601 slides relative to the driven plate 19. When the protrusion 1601 is located in the vertical through groove 1901, the driven plate 19 does not give way, so as to ensure that the clamping arm 26 first applies downward pressure to the crossbar, thus ensuring the tightness of the connection between the bottom surface of the crossbar and the edge of the ladder.

[0063] Subsequently, as the driven plate 19 continues to move, when the protrusion 1601 is located in the inclined through groove 1902, the driven plate 19 will give way. Correspondingly, the driven plate 19 drives the slider 18 to slide on the slide 17 toward the middle position of the slide 17. The slider 18 then pulls the telescopic arm assembly 22 relative to the guide plate 21 through the follower arm 20 and the connecting block 23. The limiting wheel 27 moves closer to the side of the ladder away from the crossbar, and finally applies pressure to the side of the ladder, so that the tightness of the connection between the end face of the crossbar and the ladder edge is guaranteed.

[0064] It should be noted that when the hydraulic cylinder 11 works and the height of the mounting base 12 changes, the connecting block 23 slides in the guide groove 2201. When the driven plate 19 drives the slider 18 to slide on the slide rail 17, the slider 18 can generate a pulling or pushing force on the telescopic arm assembly 22 through the follower arm 20 and the connecting block 23.

[0065] Please refer to it again. Figure 2 , Figure 4 as well as Figure 7 The positioning mechanism includes two sets of side limiting structures disposed on the base 1 and distributed along the length direction of the base 1, and four sets of end limiting structures disposed on the base 1 and arranged opposite to each other in pairs; the base 1 is provided with a mounting groove 101 along its own width direction, and the side limiting structure includes two limiting blocks 2 symmetrically and movably disposed in the mounting groove 101. The two limiting blocks 2 protrude from the upper surface of the base 1 and can move closer or further away from each other in the mounting groove 101.

[0066] Furthermore, when assembling the ladder-type cable tray, the two ladder sides need to maintain a specific distance. At this time, according to product requirements, the two limiting blocks 2 can be controlled to move closer or further away from each other in the mounting groove 101. Thus, the limiting blocks 2 can maintain the distance between the two ladder sides and effectively limit the sides of the ladder sides.

[0067] Specifically, regarding the opposing movement of the two limiting blocks 2, a bidirectional lead screw is rotatably installed in the mounting groove 101. The bidirectional lead screw is threadedly connected to the two limiting blocks 2. By utilizing the threaded engagement between the bidirectional lead screw and the limiting blocks 2, the distance between the two limiting blocks 2 can be precisely adjusted.

[0068] The end limiting structure includes a guide rail 4 fixed on the base 1, a movable seat 5 slidably fitted on the guide rail 4, and a cylinder 3 rotatably mounted on the base 1. The movable end of the cylinder 3 is hinged to the movable seat 5. A limiting arm 7 is rotatably mounted on the movable seat 5. The limiting arm 7 can be driven by a drive motor 6 mounted on the movable seat 5 to perform a swinging action.

[0069] During operation, after the ladder-type cable tray is assembled, the drive motor 6 drives the limiting arm 7 to swing, so that the length direction of the limiting arm 7 is consistent with the width direction of the base 1. Then, the movable end of the cylinder 3 extends, driving the movable seat 5 to move the limiting arm 7 along the length direction of the base 1 until the limiting arm 7 contacts the end of the ladder edge, thus effectively limiting the end of the ladder edge.

[0070] Secondly, after the welding work is completed, the limiting arm 7 moves away from the edge of the ladder, and the drive motor 6 drives the limiting arm 7 to swing 90°, so as to facilitate the removal of the welded ladder bridge from the base 1.

[0071] As another embodiment of the present invention, a plasma welding method for cable tray structural components is also proposed, employing the aforementioned welding apparatus, and comprising the following steps:

[0072] Step 1: Assemble the ladder sides and crossbars, with the positioning mechanism limiting the sides and ends of the cable tray.

[0073] Step 2: The linear drive module 8 drives the welding robot 25 to the top of the crossbar, and the lifting mechanism drives the welding robot 25 to move down and approach the crossbar. The clamping arm 26 and the limiting wheel 27 apply pressure to the crossbar and the edge of the ladder respectively.

[0074] Step 3: The welding robot 25 moves along the length of the assembly base 12 and performs welding operations at both ends of the crossbar.

[0075] Step 4: The lifting mechanism drives the welding robot 25 to lift up, and the linear drive module 8 changes the position of the welding robot 25 in the length direction of the base 1. The welding robot 25 welds each crossbar one by one.

[0076] Step 5: After welding is completed, the positioning mechanism releases the positioning state of the cable tray and removes the cable tray from the base 1.

[0077] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0078] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A kind of intelligent auxiliary slag floating bridge structure piece plasma welding device, including pedestal, i.e. the positioning mechanism for maintaining the assembled state of ladder bridge is arranged on pedestal; characterized in that Also include: Two linear drive modules mounted on pedestal and the cross-moving block connected with two linear drive modules respectively, two cross-moving blocks are movably provided with assembly seat, assembly seat is connected with two groups of lifting mechanisms respectively provided on two cross-moving blocks, the bottom of assembly seat is movably provided with welding manipulator for executing welding action; Two compression arms movably provided with two groups of elastic extension mechanisms on the side of assembly seat and multiple limit wheels movably provided below two cross-moving blocks, limit wheel is connected with cross-moving block by movable connection mechanism, compression arm is located above crosspiece, limit wheel is located on the side of ladder far away from crosspiece; When welding, linear drive module drives cross-moving block to move intermittently along the length direction of pedestal, so that welding manipulator corresponds multiple crosspieces one by one, lifting mechanism can drive assembly seat to approach crosspiece with welding manipulator, and make compression arm and limit wheel press crosspiece and ladder edge in turn respectively; The elastic extension mechanism includes vertical rod fixed to the side of the assembly seat by protruding block, sleeve slidingly fitted with the vertical rod, and spring sleeved on the outer periphery of the vertical rod, the two ends of the spring are connected with the protruding block and the sleeve respectively, the compression arm is fixedly installed on the end of the sleeve away from the protruding block, the sleeve and the movable connection mechanism are provided with a driven assembly, the driven assembly can move along the length direction of the assembly seat; The upper part of the assembly seat is fixedly installed with a slide, the driven assembly includes a sliding block slidingly fitted in the slide, the sliding block and the sleeve are provided with a sliding fit structure, the sliding block is also connected with the movable connection mechanism; The sliding fit structure includes a connecting plate fixedly connected with two sleeves and a driven plate fixedly connected with the sliding block, the connecting plate is fixed with a convex column, the driven plate is provided with a groove adapted to the convex column, the convex column extends into the groove and is slidingly connected with the driven plate, and the groove includes a vertical through groove and an inclined through groove connected with each other, when the convex column is located in the inclined through groove and relatively moves with the driven plate, it can cause the driven plate to drive the sliding block to slide towards the middle position of the slide.

2. The intelligent auxiliary slag floating bridge structural member plasma welding device according to claim 1, characterized in that, The side of the cross-moving block away from the linear drive module is fixedly provided with a guide, the lifting mechanism includes a vertical arm slidingly connected with the cross-moving block through the guide and a hydraulic cylinder fixed to the cross-moving block, the movable end of the hydraulic cylinder is fixed with the vertical arm, and the assembly seat is fixed with the vertical arm.

3. The intelligent auxiliary slag floating bridge structural member plasma welding device according to claim 1, characterized in that, The movable connection mechanism includes a guide plate fixed to the bottom of the cross-moving block and a telescopic arm group slidingly fitted with the guide plate, the limit wheel is installed on the end of the telescopic arm group away from the guide plate; Wherein, the telescopic arm group is provided with a guide groove, a connecting block is slidingly fitted in the guide groove, and the connecting block is fixedly connected with the sliding block through a follow-up arm.

4. The intelligent auxiliary slag floating bridge structural member plasma welding device according to claim 1, characterized in that, The positioning mechanism comprises two groups of side limiting structures arranged on the base and along the length direction of the base and four groups of end limiting structures respectively arranged on the base and opposite to each other.

5. The intelligent auxiliary slag floating bridge structural member plasma welding device according to claim 4, characterized in that, The base is provided with a mounting groove along the width direction of the base, and the side limiting structure comprises two limiting blocks symmetrically movably arranged in the mounting groove, the two limiting blocks protrude the upper surface of the base and can move close to or away from each other in the mounting groove.

6. The intelligent auxiliary slag floating bridge structural member plasma welding device according to claim 4, characterized in that, The end limiting structure comprises a guide rail fixed on the base, a movable seat slidably fitted on the guide rail, and a gas cylinder rotatably installed on the base, the movable end of the gas cylinder is hinged to the movable seat; The movable seat is rotatably provided with a limiting arm, the limiting arm can be driven by a driving motor installed on the movable seat to perform a swing action.

7. A method of plasma welding a bridge structure member using the welding apparatus as claimed in claim 1, characterized by, The method comprises the following steps: Step one, assembling the ladder side and the crosspiece, the side and the end of the bridge frame are limited by the positioning mechanism; Step two, the linear drive module drives the welding manipulator to reach above the crosspiece, the lifting mechanism drives the welding manipulator to move down, close to the crosspiece, and the pressing arm and the limiting wheel press the crosspiece and the ladder side respectively; Step three, the welding manipulator moves along the length direction of the assembly seat, and performs welding operation at both ends of the crosspiece respectively; Step four, the lifting mechanism drives the welding manipulator to lift up, the linear drive module changes the position of the welding manipulator in the length direction of the base, and the welding manipulator welds each crosspiece one by one; Step five, after welding, the positioning mechanism releases the positioning state of the bridge frame, and the bridge frame is taken off from the base.

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