A road metal guardrail welding processing device

Abstract

The present application relates to a road metal guardrail welding and processing device, comprising a frame and a mounting base that is lifted and lowered on the frame, a lifting member that drives the mounting base to lift and lower, a fixed cylinder that is rotatably provided on the mounting base, a grating column that is movably located in the fixed cylinder, and both ends of the grating column protrude from the fixed cylinder, a material withdrawal port is provided on the fixed cylinder for the grating column to slide out along the radial direction of the fixed cylinder, two crossbeams are located on both sides of the fixed cylinder, a moving assembly that drives the two crossbeams to slide synchronously, a positioning assembly that positions and fixes the grating column, and a welding assembly that welds the grating column is provided on the frame, and two groups of positioning assemblies and welding assemblies are provided, and the two groups of positioning assemblies and the two groups of welding assemblies correspond to the two ends of the fixed cylinder. The present application has the effect of reducing the flipping steps when welding the crossbeams and grating columns, improving the degree of welding automation and welding efficiency, while maintaining the consistency of weld penetration and weld width, and improving the mechanical properties of the weld.

Description

Technical Field

[0001] This application relates to the technical field of metal welding, and in particular to a welding processing device for road metal guardrails. Background Art

[0002] 8 common road metal guardrails Figure 1 As shown, the road metal guardrail 8 includes posts 83 fixed to the road surface, two crossbeams 81 detachably fixed between two adjacent posts 83, and multiple grid posts 82 for filling the gap between the two crossbeams 81. The crossbeams 81 and the grid posts 82 are usually fixed by carbon dioxide gas shielded welding.

[0003] Currently, the welding processing equipment commonly used for welding the crossbeam 81 and the grid column 82 includes a frame, a welding torch, and a robot arm. The welding torch is mounted on the robot arm. During welding, the technician horizontally fixes the crossbeam 81 and the grid column 82 on the frame. Then, the robot arm drives the welding torch to weld a group of adjacent sides of multiple grid columns 82 in sequence. Then, the robot arm adjusts the angle and position of the welding torch and repeats the above operation to weld the remaining three groups of adjacent sides at both ends of the grid column 82 in sequence.

[0004] Regarding the aforementioned technologies, due to the limitations of the robot arm and frame position, it is difficult to weld the sides of the grid column 82 near the frame. After welding two adjacent sets of grid columns 82, technicians need to flip the crossbeam 81 and grid column 82 to complete the welding. This process has low automation and low welding efficiency. At the same time, because the grid column 82 obstructs the robot arm, it is difficult for the robot arm to keep the welding torch angle consistent with the adjacent sides, resulting in inconsistent depth and width of the weld pool, i.e., inconsistent penetration and weld width. For example, when using the right welding method, when welding the horizontal side of a set of adjacent sides, the heat generated by the welding torch is concentrated on the weld pool. When welding the vertical side, the heat generated by the welding torch is concentrated on the crossbeam 81 and grid column 82. At this time, the penetration depth of the vertical side is less than that of the horizontal side, and the weld width of the vertical side is greater than that of the horizontal side. This causes the weld shape to be mismatched at the connection between the two sides and the weld quality to be inconsistent, thus affecting the mechanical properties of the weld. Summary of the Invention

[0005] In order to reduce the flipping steps during welding of crossbeams and grid columns, improve the degree of welding automation and welding efficiency, and at the same time maintain the consistency of weld penetration and width to improve the mechanical properties of the weld, this application provides a welding processing device for road metal guardrails.

[0006] The technical solution of the road metal guardrail welding and processing device provided in this application is as follows:

[0007] A welding and processing device for road metal guardrails includes a frame and a mounting base that is lifted and lowered on the frame. The frame is provided with a lifting component that drives the mounting base to rise and fall. A fixed cylinder is rotatably mounted on the mounting base. A grid column is movably located inside the fixed cylinder, with both ends of the grid column protruding from the fixed cylinder. The fixed cylinder has a discharge port for the grid column to slide out along the radial direction of the fixed cylinder. Two crossbeams are located on both sides of the fixed cylinder. The frame is provided with a moving component that drives the two crossbeams to slide synchronously, a positioning component that positions and fixes the grid column, and a welding component that welds the grid column. Two sets of the positioning component and the welding component are provided, with the two sets of positioning components and the two sets of welding components corresponding to the two ends of the fixed cylinder.

[0008] The welding assembly includes a welding torch movably mounted on the end of the fixed cylinder. The welding torch is inclined toward the side of the grid column. There are two welding torches, which are evenly spaced along the circumference of the fixed cylinder. The mounting base is provided with a driving component for rotating the fixed cylinder, an adjusting component for moving the two welding torches closer to the fixed cylinder, and a synchronizing component for moving the two welding torches synchronously along the side of the grid column. After the grid column is positioned, the adjusting component moves the welding torch to the connection point of two adjacent sides of the grid column that are inclined toward each other. The opening direction of the ejector port is upward.

[0009] By adopting the above technical solution, when welding is required, the moving component drives the two crossbeams to the welding position, and then the technician places a grid column in the fixed cylinder. At this time, the welding torch does not easily obstruct the movement of the grid column, and the opening direction of the ejector port is upward. This is the initial position of the welding torch and the fixed cylinder.

[0010] Then, the positioning component positions the grid column inside the positioning cylinder, adjusts the grid column and positions it on the axis of the fixed cylinder. At this time, the welding torch corresponds to the vertical side of the grid column. At the same time, the adjusting component moves the welding torch closer to the inside of the fixed cylinder, so that the welding torch is close to the side of the grid column and towards the connection point of the adjacent side of the grid column. Then, the lifting component moves the mounting base up, so that the fixed cylinder and the grid column rise synchronously, so that the grid column is located between the two crossbeams. This is the welding position of the grid column.

[0011] Then the welding torch operates, and the synchronizing component drives the two welding torches to slide synchronously, achieving welding of the four vertical sides of the grid column at both ends. Then the welding torch stops working, and the adjusting component drives the two welding torches to move away from the grid column synchronously. At the same time, the synchronizing component and the positioning component reset, bringing the welding torches to their initial positions. Then the driving component drives the fixed cylinder to rotate, so that the opening direction of the ejector port faces the sliding direction of the crossbeam. At this time, the two welding torches correspond to the two horizontal sides of the grid column respectively. Then the positioning component repositions and fixes the grid column, and at the same time, the adjusting component and the synchronizing component drive the two welding torches to move synchronously, achieving welding of the four horizontal sides of the grid column at both ends. This reduces the flipping steps when welding the crossbeam and the grid column, improving the degree of welding automation and welding efficiency.

[0012] Then the moving component drives the crossbeam and the welded grid column on the crossbeam to slide, so that the grid column slides out from the unloading port and the crossbeam slides to the welding position of the next grid column. Then the driving component drives the fixed cylinder to rotate so that the opening direction of the unloading port is upward. At the same time, the lifting component drives the mounting base and the fixed cylinder to descend to the loading position of the grid column, which is convenient for the next loading.

[0013] When welding different sides of the grid column, the angle between the welding torch and the side of the grid column is always kept consistent, so that the heat generated by the welding torch is applied stably and evenly to the connection between the grid column and the beam, keeping the depth and width of the weld pool consistent. This ensures that the depth, width and shape of the weld are consistent, and at the same time helps to reduce welding defects such as porosity and slag inclusions, and improves the mechanical properties of the weld.

[0014] Optionally, the synchronizing element includes a guide plate disposed on the end side of the fixed cylinder, the guide plate corresponding to the fixed cylinder, a synchronizing block slidably disposed on the guide plate, two synchronizing blocks being provided, each corresponding to one of the two welding torches, the welding torches being disposed on the synchronizing blocks, the guide plate having guide holes for the synchronizing blocks to slide, the opening direction of the guide holes being consistent with the opening direction of the ejector port, a synchronizing plate corresponding to the guide plate being coaxially rotatably disposed on the fixed cylinder, the synchronizing plate being located on the side of the guide plate away from the welding torches, two inclined synchronizing grooves being provided on the synchronizing plate, a synchronizing post being disposed on the synchronizing block, two synchronizing posts corresponding to one of the two synchronizing grooves, the synchronizing post being located in the synchronizing groove and movably abutting against the inner sidewall of the synchronizing groove, and a first power element for driving the synchronizing plate to rotate being disposed on the fixed cylinder.

[0015] By adopting the above technical solution, when the adjusting component moves the welding torch close to the grid column, the first power component drives the synchronous plate to rotate. Due to the inclined arrangement of the synchronous groove, the synchronous column abuts against the inner wall of the synchronous groove, and the synchronous column moves in the synchronous groove. At the same time, the synchronous block slides in the guide hole, so that the welding torch moves along the direction of the guide hole. This achieves synchronous movement of the two welding torches along the vertical side of the grid column, saving power source and improving the stability of operation. At the same time, the tilt angle and welding direction of the two welding torches are relatively consistent, improving the consistency of the weld.

[0016] Optionally, the positioning component includes a positioning rod slidably disposed within the fixed cylinder. The fixed cylinder has a sliding groove, and the positioning rod is located within the sliding groove and movably fits against the inner side wall of the sliding groove. There are three positioning rods, which are arranged at 90° intervals along the circumference of the fixed cylinder and avoid the unloading port. The end of the positioning rod near the inside of the fixed cylinder is movably pressed against the outer side wall of the grid column. The mounting base is provided with a rotating component that drives the three positioning rods to slide closer to each other.

[0017] By adopting the above technical solution, after the grid column is transported into the fixed cylinder, the rotating component drives the three positioning rods to slide synchronously closer, and the end of the positioning rod near the fixed cylinder abuts against the outer wall of the grid column. At this time, the two positioning rods approach each other and clamp the two side walls of the grid column, while the third positioning rod abuts against the side wall of the grid column near the mounting base, thereby straightening the grid column and placing it on the axis of the fixed cylinder. This achieves the positioning of the grid column, improves the accuracy of grid column positioning, and reduces the labor intensity of technicians manually placing the grid column.

[0018] Optionally, the rotating component includes a sliding column disposed on the positioning rod, and a rotating plate is coaxially rotatably disposed on the fixed cylinder. The rotating plate has three rotating holes, which are arranged at an angle. The three sliding columns correspond one-to-one with the three rotating holes. The sliding columns are movably located within the rotating holes and are movably pressed against the inner sidewall of the rotating holes. A second power component for driving the rotating plate to rotate is disposed on the fixed cylinder.

[0019] By adopting the above technical solution, when positioning the grid column, the second power component drives the rotating plate to rotate. Due to the inclined arrangement of the rotating hole, the sliding column abuts against the inner wall of the rotating hole and slides in the rotating hole. This causes the sliding column to drive the positioning rod to slide closer to the fixed cylinder, realizing the synchronous sliding of the three positioning rods, which facilitates the positioning and fixing of the grid column.

[0020] Optionally, the adjusting component includes an adjusting block slidably disposed on the synchronizing block, an adjusting groove for sliding of the adjusting block being provided on the synchronizing block, the adjusting groove being inclined at 45°, the adjusting block being pressed against the inner sidewall of the adjusting groove, the welding torch being disposed on the adjusting block, a sliding rod being elastically slidably disposed on the synchronizing block, one end of the sliding rod being movably protruding from the sidewall of the synchronizing block, the other end of the sliding rod being connected to the adjusting block, and a limiting plate being fixed on each of the two opposing positioning rods, the protruding end of the sliding rod being movably pressed against the limiting plate.

[0021] By adopting the above technical solution, when the positioning rod slides towards the inside of the fixed cylinder, the positioning rod drives the limiting plate to slide and press against the protruding end of the sliding rod, causing the sliding rod to drive the adjusting block to slide in the adjusting groove. Due to the inclined arrangement of the adjusting groove, the welding torch moves towards the grid column, and at the same time, the output end of the welding torch moves towards the connection point of the two adjacent sides of the grid column, until the positioning rod presses against the outer wall of the grid column. At this time, the welding torch is close to the side of the grid column, and the output end of the welding torch is facing the connection point of the two adjacent sides of the grid column, realizing the positioning of the grid column and the movement of the welding torch to the welding position at the same time, improving the efficiency of equipment operation and saving power. At the same time, for grid columns of different sizes, when the positioning rod positions them, the adjusting block slides with the sliding of the positioning rod. At this time, the welding torch is still close to the side of the grid column, and the output end of the welding torch is always facing the connection point of the two adjacent sides of the grid column, so as to adapt to the welding of grid columns of different sizes.

[0022] After welding is completed, the positioning rod slides away from the fixed cylinder, separating the positioning rod from the grid column. At this time, the sliding rod slides away from the fixed cylinder under the elastic force, causing the adjusting block and the welding gun to slide along the adjusting groove and away from the grid column. When the fixed cylinder rotates later, the welding gun is less likely to come into contact with the grid column.

[0023] Optionally, the driving component includes a driven gear coaxially mounted on the fixed cylinder, the driven gear being a semi-tooth ring shape, a driving gear rotatably mounted on the mounting base, the driving gear meshing with the driven gear, and a third power component for driving the driving gear to rotate on the mounting base.

[0024] By adopting the above technical solution, after the welding torch finishes welding the vertical edge of the grid column, the second power component works, driving the welding torch away from the grid column. Then the first power component works, causing the welding torch to slide back to its initial position. Then the third power component works, driving the drive gear to rotate, which in turn drives the driven gear to rotate, causing the fixed cylinder to rotate so that the ejector port faces the direction of movement of the crossbeam. Then the moving component drives the crossbeam to slide with the welding grid column on the crossbeam, causing the grid column to slide out from the ejector port, so that the next welding position of the crossbeam is opposite to the fixed cylinder. Then the third power component drives the drive gear to reverse, so that the ejector port of the fixed cylinder faces upward, which is convenient for the next welding.

[0025] Optionally, the moving component includes a support frame slidably mounted on the frame, two crossbeams placed opposite each other on the support frame, a locking structure for fixing the crossbeams on the support frame, a lead screw rotatably mounted on the frame, a movable nut coaxially threaded on the lead screw, the movable nut being connected to the support frame, a fourth power component for driving the lead screw to rotate on the frame, and a grinding component for grinding the side walls of the two crossbeams that are close to each other on the frame.

[0026] By adopting the above technical solution, during processing, technicians first place the two crossbeams on the support frame and fix them with a locking structure. Then, the fourth power component drives the lead screw to rotate, thereby causing the moving nut to slide synchronously with the support frame until the first position of the two crossbeams to be welded corresponds to the fixed cylinder. Then, the first grid column is welded. After the welding is completed, the fourth power component continues to work and drives the crossbeam to move to the next position to be welded to correspond to the fixed cylinder, realizing automated feeding and welding the grid columns in sequence.

[0027] As the crossbeams move, the grinding assembly grinds the sidewalls of the two crossbeams that are close to each other, thereby removing impurities such as oxides, rust, and dirt from the surface of the crossbeams to be welded, reducing the generation of porosity and cracks, and improving the strength and reliability of the weld.

[0028] Optionally, the grinding assembly includes two grinding wheels rotatably mounted on the support frame. The two grinding wheels are arranged opposite each other and are respectively in contact with the side walls of the two crossbeams that are close to each other. The grinding wheels are coaxially provided with drive gears. The frame is provided with two fixed racks, and the two fixed racks correspond one-to-one with the two drive gears. The drive gears mesh with the fixed racks.

[0029] By adopting the above technical solution, when the support frame slides, it drives the drive gear to move along the fixed rack. At this time, the fixed rack drives the drive gear to rotate, thereby driving the grinding wheel to rotate. This allows the grinding wheel to grind the surface of the crossbeam to be welded. After the previous welding step is completed, the sliding of the support frame drives the grinding wheel to grind the next welding position. At the same time, the ground position is moved to the welding position, improving processing efficiency. Moreover, the crossbeam has just been ground, ensuring the cleanliness of the crossbeam surface, reducing the risk of the ground position being contaminated again, and improving the quality of the weld.

[0030] Optionally, a clamping wheel is rotatably provided at one end of the positioning rod near the inside of the fixed cylinder, and the outer peripheral wall of the clamping wheel is movably clamped against the outer side wall of the grid column.

[0031] By adopting the above technical solution, when the positioning rod positions the grid column, the clamping wheel at the end of the positioning rod abuts against the outer wall of the grid column, reducing the risk of scratching the outer wall of the grid column and improving the surface quality of the guardrail after welding.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. Two sets of four welding torches simultaneously weld the four parallel sides of the grid column at both ends, improving welding efficiency. Because the installation positions and movement paths of the two welding torches on one side are symmetrically arranged, the thermal stress generated at the connection points of the two sides of the grid column during welding can be effectively reduced, thus lowering the risk of metal deformation at the weld. After welding the four sides of the grid column, the fixed cylinder rotates, aligning the four welding torches with the remaining four sides of the grid column. This reduces the flipping steps when welding the beam and grid column, improving the automation and efficiency of welding. Furthermore, during welding, the angle between the welding torch and the grid column side, as well as the direction of the welding torch's movement, remain consistent, ensuring that the heat generated by the welding torch is applied stably and evenly to the connection between the grid column and the beam. This maintains consistent melt depth and width, resulting in consistent weld depth, width, and shape, which helps reduce welding defects such as porosity and slag inclusions, and improves the mechanical properties of the weld.

[0034] 2. The second power component drives the rotating plate to rotate, thereby causing the three positioning rods to slide close synchronously and abut against the three side walls of the grid column (excluding the upward-facing side), thus positioning the grid column. Then, the lifting component drives the mounting base to rise, positioning the grid column at the welding position between the two crossbeams, reducing the labor intensity of technicians manually placing the grid column and improving the accuracy of grid column positioning.

[0035] Simultaneously, the limiting plates on the two positioning rods arranged opposite each other press against the sliding rod, causing the adjusting block to slide within the adjusting groove. Since the adjusting groove is arranged at a 45° angle, when the positioning rod presses against the side wall of the grid column, the output end of the welding gun is close to the side of the grid column, and the output end of the welding gun faces the connection between the two adjacent sides of the grid column. When the size of the grid column is different, the sliding distance of the positioning rod when it presses against the grid column changes. Since the adjusting block slides with the sliding of the positioning rod, the welding gun is still close to the side of the grid column, and the output end of the welding gun always faces the connection between the two adjacent sides of the grid column, in order to adapt to the welding of grid columns of different sizes.

[0036] 3. The fourth power component drives the lead screw to rotate, thereby causing the moving nut and support frame to slide synchronously. This moves the first position of the two crossbeams to be welded to correspond with the fixed cylinder. At the same time, the support frame drives the drive gear to move along the fixed rack. The fixed rack then drives the drive gear to rotate, thereby rotating the grinding wheel and grinding the side walls of the two crossbeams that are close to each other. This removes oxides, rust, dirt, and other impurities from the surface of the crossbeams to be welded, reducing the generation of porosity and cracks, and improving the strength and reliability of the weld. After grinding is completed, the fourth power component continues to work, repeating the above steps to achieve automated feeding and sequentially weld the grid columns, improving welding efficiency. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the guardrail;

[0038] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the connection structure of the positioning rod, the fixing cylinder, and the mounting base;

[0040] Figure 4 This is a schematic diagram showing the status of the rotating plate, limiting plate, positioning rod, synchronization block, and welding gun before welding.

[0041] Figure 5 It is an exploded diagram of the welding torch, guide plate, synchronization plate, and fixed cylinder;

[0042] Figure 6 This is a schematic diagram of the connection structure of the driving gear, driven gear, and fixed cylinder.

[0043] Reference numerals: 1. Frame; 11. Mounting base; 12. Lifting component; 2. Fixed cylinder; 21. Ear plate; 22. Unloading port; 3. Welding assembly; 31. Welding torch; 32. Synchronizing component; 321. Guide plate; 322. Synchronizing block; 323. Guide hole; 324. Synchronizing plate; 325. Synchronizing groove; 326. Synchronizing column; 327. First power component; 33. Adjusting component; 331. Adjusting block; 332. Adjusting groove; 333. Sliding rod; 334. Limiting plate; 34. Driving component; 341. Driven gear; 342. Driving gear; 343. Third power component 4. Positioning assembly; 41. Positioning rod; 42. Sliding groove; 43. Rotating component; 431. Sliding column; 432. Rotating plate; 433. Rotating hole; 434. Second power component; 44. Pressing wheel; 5. Moving assembly; 51. Support frame; 52. Lead screw; 53. Moving nut; 54. Fourth power component; 55. Locking structure; 551. Abutting block; 552. Abutting screw; 6. Grinding assembly; 61. Grinding wheel; 62. Drive gear; 63. Fixed rack; 7. Feeding assembly; 8. Guardrail; 81. Crossbeam; 82. Grille column; 83. Column. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0045] This application discloses a welding and processing apparatus for road metal guardrails. (Refer to...) Figure 2 and Figure 3 A road metal guardrail welding processing device includes a frame 1 horizontally placed on the ground and a mounting base 11 that is lifted and connected to the top of the frame 1. A lifting component 12 is provided on the frame 1 to drive the mounting base 11 to rise and fall. In this application, the lifting component 12 is a lifting electric push rod. A fixed cylinder 2 is rotatably connected to the mounting base 11. The rotation axis of the fixed cylinder 2 is consistent with the width direction of the frame 1. Ear plates 21 are fixed at both ends of the fixed cylinder 2. Grille posts 82 are movably located inside the fixed cylinder 2, and both ends of the grille posts 82 protrude beyond the fixed cylinder. The cylinder 2 is arranged with a discharge port 22 on the fixed cylinder 2 for the grid column 82 to slide out along the radial direction of the fixed cylinder 2. The frame 1 is equipped with a moving component 5 that drives the two crossbeams 81 to slide synchronously. The two crossbeams 81 are located on both sides of the fixed cylinder 2. The fixed cylinder 2 is also equipped with a positioning component 4 for positioning the grid column 82 and a welding component 3 for welding the grid column 82. There are two sets of positioning components 4 and welding components 3. The two sets of positioning components 4 and the two sets of welding components 3 correspond to the two ends of the fixed cylinder 2.

[0046] To automate the feeding of the grating columns 82, a feeding assembly 7 is installed on the frame 1 to transport the grating columns 82 into the fixed cylinder 2, as shown in the figure. Figure 2The feeding assembly 7 includes a conveyor belt mounted on the frame 1, which transports the grid posts 82 to be welded. The frame 1 is equipped with a feeding electric push rod that pushes the grid posts 82 on the conveyor belt into the fixed cylinder 2 along the axis of the fixed cylinder 2.

[0047] Reference Figure 3 , Figure 4 and Figure 5 The positioning component 4 includes a positioning rod 41 slidably connected to the ear plate 21. The ear plate 21 has a sliding groove 42 for the positioning rod 41 to slide. The positioning rod 41 is movably fitted to the inner side wall of the sliding groove 42. There are three positioning rods 41, which are arranged at 90° intervals along the circumference of the fixed cylinder 2 and avoid the material discharge port 22. The sliding direction of the positioning rod 41 is consistent with the radial direction of the fixed cylinder 2. The end of the positioning rod 41 closest to the inside of the fixed cylinder 2 is rotatably connected to a pressing wheel 44. The rotation axis of the pressing wheel 44 is parallel to the rotation axis of the fixed cylinder 2. The outer peripheral wall of the pressing wheel 44 is movably pressed against the outer side wall of the grid column 82.

[0048] To drive the three positioning rods 41 to slide closer together, a rotating component 43 is provided on the mounting base 11, as shown in the reference. Figure 3 , Figure 4 and Figure 5 The rotating component 43 includes a sliding column 431 fixed on the positioning rod 41. A rotating plate 432 corresponding to the ear plate 21 is coaxially rotatably connected to the fixed cylinder 2. The rotating plate 432 is located on the side of the ear plate 21 closer to the other ear plate 21. The rotating plate 432 has three rotating holes 433, which are arranged at an angle. The three sliding columns 431 correspond one-to-one with the three rotating holes 433. The sliding columns 431 are movably located in the rotating holes 433 and are movably pressed against the inner side wall of the rotating holes 433. The fixed cylinder 2 is provided with a second power component 434 that drives the rotating plate 432 to rotate. In this application, the second power component 434 is provided with an adjusting electric push rod. One end of the adjusting electric push rod is rotatably connected to the ear plate 21, and the output end of the adjusting electric push rod is rotatably connected to the rotating plate 432.

[0049] When welding is required, the moving component 5 moves the two crossbeams 81 to the welding position, and then the conveyor belt simultaneously transports the grid column 82 to the corresponding position in the fixed cylinder 2. Then the feeding electric push rod pushes the grid column 82 into the fixed cylinder 2.

[0050] Then the second power component 434 works, driving the rotating plate 432 to rotate. Due to the inclined arrangement of the rotating hole 433, the sliding column 431 abuts against the inner wall of the rotating hole 433, and the sliding column 431 slides in the rotating hole 433. This causes the sliding column 431 to drive the positioning rod 41 to slide towards the inside of the fixed cylinder 2, realizing the synchronous sliding and approaching of the three positioning rods 41. At this time, the clamping wheels 44 on the two opposite positioning rods 41 approach each other and clamp the two side walls of the grid column 82. At the same time, the clamping wheel 44 on the third positioning rod 41 abuts against the side wall of the grid column 82 near the mounting base 11, thereby aligning the grid column 82 and placing it on the axis of the fixed cylinder 2. The clamping wheel 44 reduces the risk of scratching the outer peripheral wall of the grid column 82 and improves the surface quality of the guardrail 8 after welding.

[0051] Then, the lifting component 12 raises the mounting base 11, raising the fixed cylinder 2 and the grid column 82 between the two crossbeams 81, thereby positioning the grid column 82, improving the accuracy of the grid column 82 positioning, and reducing the labor intensity of technicians manually placing the grid column 82. Then, the welding component 3 welds the grid column 82.

[0052] Furthermore, in order to achieve welding of the grid column 82 and improve welding quality, refer to Figure 3 , Figure 4 and Figure 5 The welding assembly 3 includes a welding torch 31 movably disposed on the end side of the fixed cylinder 2. There are two welding torches 31, which are evenly spaced along the circumference of the fixed cylinder 2 and are located on both sides of the unloading port 22. When the positioning rod 41 is in the retracted state, the clamping wheel 44 and the welding torch 31 do not easily obstruct the movement of the grid column 82. The opening direction of the unloading port 22 is upward. This is the initial position of the positioning rod 41, the welding torch 31 and the fixed cylinder 2. After the grid column 82 is positioned and aligned, the welding torch 31 is inclined towards the side of the grid column 82.

[0053] To ensure that the movement direction of the two welding torches 31 is parallel to the opening direction of the ejector port 22, and to achieve opposite movement of the welding torches 31 along the side of the grid column 82, a synchronizing element 32 is provided on the fixed cylinder 2, as shown in the reference. Figure 3 , Figure 4 and Figure 5The synchronizing component 32 includes a guide plate 321 detachably fixed to the side wall of the fixed cylinder 2. The guide plate 321 has a notch corresponding to the fixed cylinder 2 and two guide holes 323. The opening direction of the guide holes 323 is consistent with the opening direction of the material ejection mechanism. The two guide holes 323 are evenly spaced along the circumference of the fixed cylinder 2. A sliding block is slidably disposed within the guide hole 323, and the sliding block is movably abutted against the inner side wall of the guide hole 323. The two sliding blocks correspond one-to-one with two welding torches 31, and the welding torches 31 are movably disposed on the sliding blocks. A synchronizing plate 324 is coaxially rotatably connected to the fixed cylinder 2. The shape of the synchronizing plate 324 corresponds to the ear plate 21. The synchronizing plate 324 is positioned... On the side of the guide plate 321 away from the welding torch 31, and between the ear plate 21 and the guide plate 321, two inclined synchronous grooves 325 are provided on the synchronous plate 324. A synchronous column 326 is fixed on the side wall of the synchronous block 322 near the synchronous plate 324. The two synchronous columns 326 correspond one-to-one with the two synchronous grooves 325. The synchronous column 326 is located in the synchronous groove 325 and is movably abutted against the inner side wall of the synchronous groove 325. A first power member 327 for driving the synchronous plate 324 to rotate is provided on the fixed cylinder 2. In this application, the first power member 327 is a telescopic electric actuator. One end of the telescopic electric actuator is rotatably connected to the ear plate 21, and the output end of the telescopic electric actuator is rotatably connected to the synchronous plate 324.

[0054] To drive the two welding torches 31 to move closer to the fixed cylinder 2, the fixed cylinder 2 is provided with an adjusting component 33, as shown in the reference. Figure 3 , Figure 4 and Figure 5 The adjusting component 33 includes an adjusting block 331 slidably connected to the synchronizing block 322. The synchronizing block 322 has an adjusting groove 332 for the adjusting block 331 to slide. The adjusting groove 332 is arranged at an inclination of 45°. The adjusting block 331 abuts against the inner side wall of the adjusting groove 332. The welding torch 31 is fixed to the adjusting block 331. A sliding rod 333 is elastically slidably connected to the synchronizing block 322. One end of the sliding rod 333 is movably protruding from the side wall of the synchronizing block 322. The other end of the sliding rod 333 is fixedly connected to the adjusting block 331. Limiting plates 334 are fixed on two opposing positioning rods 41. The protruding end of the sliding rod 333 abuts against the limiting plate 334.

[0055] To facilitate the rotation of the fixed cylinder 2 and the welding of the horizontal sides of the grid column 82, a drive component 34 is provided on the mounting base 11, as shown in the reference. Figure 6 The driving component 34 includes a driven gear 341 coaxially fixed on the fixed cylinder 2. The driven gear 341 is a semi-tooth ring. A driving gear 342 is rotatably disposed on the mounting base 11. The driving gear 342 meshes with the driven gear 341. A third power component 343 is disposed on the mounting base 11 to drive the driving gear 342 to rotate. In this application, the third power component 343 is a drive motor.

[0056] When welding is required, the opening of the ejector port 22 faces upward, and the two welding torches 31 correspond to the two vertical sides of the grid column 82. Then, the second power component 434 drives the rotating plate 432 to rotate, causing the three positioning rods 41 to slide closer synchronously. At this time, the two relatively positioned positioning rods 41 drive the two limiting plates 334 to slide closer to each other, so that the limiting plates 334 press against the protruding end of the sliding rod 333, causing the sliding rod 333 to drive the adjusting block 331 to slide in the adjusting groove 332. The welding torch 31 is tilted at 45° so that it moves closer to the grid column 82. At the same time, the output end of the welding torch 31 moves closer to the connection point of the two adjacent sides of the grid column 82 until the positioning rod 41 presses against the outer wall of the grid column 82, thus positioning the grid column 82. At this time, the welding torch 31 is close to the side of the grid column 82, and the output end of the welding torch 31 is facing the connection point of the two adjacent sides of the grid column 82. This achieves positioning of the grid column 82 and moves the welding torch 31 to the welding position, improving the efficiency of equipment operation.

[0057] During welding, the first power component 327 drives the synchronous plate 324 to rotate. Due to the inclined arrangement of the synchronous groove 325, the synchronous column 326 abuts against the inner wall of the synchronous groove 325, and moves the synchronous column 326 within the synchronous groove 325. At the same time, the synchronous block 322 slides within the guide hole 323, causing the welding torch 31 to move along the direction of the guide hole 323. This enables the two welding torches 31 to move synchronously along the vertical sides of the grid column 82. Simultaneously, the welding torches 31 work to weld the four vertical sides at both ends of the grid column 82.

[0058] After welding is completed, the second power component 434 operates, causing the positioning rods 41 to slide away from each other and separate from the grid column 82. At this time, the limiting plate 334 separates from the sliding rod 333. Under the elastic force, the sliding rod 333 drives the adjusting block 331 to slide in the adjusting groove 332, causing the welding torch 31 to move away from the grid column 82. Then, the first power component 327 operates, causing the welding torch 31 to slide to the initial position. Then, the third power component 343 drives the driving gear 342 to rotate, thereby driving the driven gear 341 to rotate, causing the fixed cylinder 2 to rotate to the direction of movement of the unloading port 22 toward the crossbeam 81. At this time, the two welding torches 31 are respectively in contact with the grid column 82. The two flat sides correspond to each other, and then the second power component 434 works to bring the welding torch 31 close to the grid column 82 and into the welding position. Then the first power component 327 works with the welding torch 31 to weld the remaining four horizontal sides of the grid column 82. During welding, the tilt angle and welding direction of the welding torch 31 are kept consistent, so that the heat generated by the welding torch 31 is stably and evenly applied to the connection between the grid column 82 and the crossbeam 81, keeping the depth and width of the molten pool consistent. This ensures that the depth, width and shape of the weld are consistent, which helps to reduce welding defects such as porosity and slag inclusions, improves welding quality and enhances weld consistency.

[0059] After the eight sides of the grid column 82 are welded, the moving component 5 drives the crossbeam 81 and the grid column 82 to slide, so that the grid column 82 slides out from the unloading port 22 and the crossbeam 81 slides to the next welding position corresponding to the fixed cylinder 2.

[0060] Furthermore, in order to fix the crossbeam 81 and drive the two crossbeams 81 to slide synchronously, refer to Figure 2 The moving component 5 includes a support frame 51 slidably connected to the top of the frame 1, two crossbeams 81 placed opposite each other on the support frame 51, a lead screw 52 rotatably connected to the frame 1, the rotation axis of the lead screw 52 is horizontally arranged and perpendicular to the rotation axis of the fixed cylinder 2, a movable nut 53 is coaxially threaded on the lead screw 52, ​​the movable nut 53 is fixedly connected to the support frame 51, and a fourth power component 54 for driving the lead screw 52 to rotate is provided on the frame 1. In this application, the fourth power component 54 is a moving motor.

[0061] To secure the crossbeam 81, a locking structure 55 is provided on the frame 1, as shown in the reference. Figure 2 The locking structure 55 includes an "L"-shaped abutment block 551 fixed to the top side of the support frame 51. There are two sets of abutment blocks 551, and the two sets of abutment blocks 551 correspond one-to-one with the two crossbeams 81. Each set of abutment blocks 551 includes two abutment blocks 551 that correspond to the two ends of the crossbeam 81 respectively. The two abutment blocks 551 are arranged opposite to each other and clamp the crossbeam 81 between the two abutment blocks 551. Abutment screw 552 is threadedly connected to the abutment block 551. The rotation axis of the abutment screw 552 is consistent with the height direction of the frame 1. One end of the abutment screw 552 is movably abutted against the side wall of the crossbeam 81 away from the support clamp.

[0062] To grind the sidewalls of the two crossbeams 81 that are close to each other, a grinding assembly 6 is provided on the frame 1, as shown in the figure. Figure 2 The grinding assembly 6 includes a grinding wheel 61 rotatably connected to the support frame 51. The rotation axis of the grinding wheel 61 is vertically arranged. There are two grinding wheels 61, which are arranged opposite each other and respectively fit against the side walls of the two crossbeams 81. A drive gear 62 is coaxially fixed to the grinding wheel 61. Two fixed racks 63 are fixed on the frame 1. The two fixed racks 63 correspond one-to-one with the two drive gears 62, and the drive gears 62 mesh with the fixed racks 63.

[0063] When welding is required, the technician places the two crossbeams 81 on the support frame 51 and clamps the crossbeams 81 between two opposing abutment blocks 551. Then, the technician rotates the abutment screw 552 to press the abutment screw 552 against the crossbeams 81, thus fixing the crossbeams 81. Then, the fourth power component 54 drives the lead screw 52 to rotate, thereby causing the moving nut 53 to slide synchronously with the support frame 51. At this time, the support frame 51 drives the drive gear 62 to move along the fixed rack 63, causing the fixed rack 63 to drive the drive gear 62 to rotate, thereby driving the grinding wheel 61 to rotate. This allows the grinding wheel 61 to grind the side walls of the crossbeams 81 that are close to each other until the first position of the two crossbeams 81 that needs to be welded corresponds to the fixed cylinder 2. At this time, the crossbeams 81 with the welding position have just been ground, ensuring the cleanliness of the surface of the crossbeams 81, reducing the risk of the ground position being contaminated again, and improving the quality of the weld. Then, the first grid column 82 is welded.

[0064] The implementation principle of the road metal guardrail welding processing device in this application embodiment is as follows: When welding is required, the technician places two crossbeams 81 on the top of the support frame 51 and clamps the crossbeams 81 between two abutting blocks 551. Then the technician rotates the abutting screw 552 to tighten the abutting screw against the crossbeams 81, thereby fixing the crossbeams 81. At the same time, the conveyor belt transports the grid posts 82 to the corresponding fixed cylinder 2. Then the feeding electric push rod pushes the grid posts 82 into the fixed cylinder 2.

[0065] Then, the fourth power component 54 drives the lead screw 52 to rotate, thereby causing the moving nut 53 to slide synchronously with the support frame 51, and causing the fixed rack 63 to drive the drive gear 62 to rotate, thereby causing the grinding wheel 61 to grind the side walls of the crossbeam 81 that are close to each other, until the ground part slides to correspond with the fixed cylinder 2. At the same time, the second power component 434 drives the rotating plate 432 to rotate, causing the sliding column 431 to slide, thereby causing the positioning rod 41 to slide closer to the inside of the fixed cylinder 2. At the same time, the two positioning rods 431 are arranged opposite to each other. The fixed limiting plates 334 on the 1 slide close to each other and press against the protruding end of the sliding rod 333, so that the sliding rod 333 drives the adjusting block 331 to slide in the adjusting groove 332 until the pressing wheel 44 on the positioning rod 41 presses against the outer wall of the grid column 82, thereby aligning the grid column 82 and placing the grid column 82 on the axis of the fixed cylinder 2. At this time, the opening direction of the ejector port 22 is upward, the welding gun 31 is close to the side of the grid column 82, and the output end of the welding gun 31 is facing the connection of the two adjacent sides of the grid column 82.

[0066] Then, the lifting component 12 drives the mounting base 11 to rise, thereby causing the fixed cylinder 2 and the grid column 82 to be located between the two crossbeams 81. Then, the first power component 327 drives the synchronous plate 324 to rotate, causing the synchronous column 326 to slide in the synchronous groove 325, thereby causing the synchronous block 322 to slide in the guide hole 323, so that the welding gun 31 can weld the vertical side of the grid column 82.

[0067] After the vertical side welding is completed, the second power component 434 and the first power component 327 work together to move the positioning rod 41 and the welding gun 31 away from the grid column 82. Then, the third power component 343 drives the drive gear 342 to rotate, which in turn drives the driven gear 341 to rotate, causing the fixed cylinder 2 to rotate to the direction of movement of the unloading port 22 toward the crossbeam 81. At this time, the two welding guns 31 correspond to the two horizontal sides of the grid column 82 respectively. Then, the second power component 434 works to move the positioning rods 41 closer to each other again and to make the clamping wheel 44 press against the grid column 82, so that the welding gun 31 is close to the grid column 82 and the output end of the welding gun 31 is facing the connection of the two adjacent sides of the grid column 82. Then, the first power component 327 works to make the welding gun 31 weld the horizontal side of the grid column 82.

[0068] After welding is completed, the fourth power component 54 operates, causing the crossbeam 81 to slide against the grid column 82, and the grid column 82 to slide out from the unloading port 22. The crossbeam 81 then slides to the next welding position to correspond with the fixed cylinder 2. Then, the third power component 343 rotates the fixed cylinder 2 so that the unloading head faces upward. Then, the second power component 434 and the first power component 327 operate, causing the welding gun 31 to slide to the initial position. At the same time, the lifting component 12 drives the mounting base 11 and the fixed cylinder 2 to descend to the grid column 82 loading position and perform the next loading process.

[0069] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A welding and processing device for road metal guardrails, characterized in that: The device includes a frame and a mounting base that is lifted and lowered on the frame. The frame is equipped with a lifting component that drives the mounting base to lift and lower. A fixed cylinder is rotatably mounted on the mounting base. The grid column is movably located inside the fixed cylinder, and both ends of the grid column protrude from the fixed cylinder. The fixed cylinder has a discharge port for the grid column to slide out along the radius of the fixed cylinder. Two crossbeams are located on both sides of the fixed cylinder. The frame is equipped with a moving component that drives the two crossbeams to slide synchronously, a positioning component that positions and fixes the grid column, and a welding component that welds the grid column. Two sets of the positioning component and the welding component are provided, and the two sets of positioning components and the two sets of welding components correspond to the two ends of the fixed cylinder. The welding assembly includes a welding torch movably mounted on the end of the fixed cylinder. The welding torch is inclined toward the side of the grid column. There are two welding torches, which are evenly spaced along the circumference of the fixed cylinder. The mounting base is provided with a driving component for rotating the fixed cylinder, an adjusting component for moving the two welding torches closer to the fixed cylinder, and a synchronizing component for moving the two welding torches synchronously along the side of the grid column. After the grid column is positioned, the adjusting component moves the welding torch to the connection point of two adjacent sides of the grid column that are inclined toward each other. The opening direction of the ejector port is upward. The synchronizing element includes a guide plate disposed on the end side of the fixed cylinder, the guide plate corresponding to the fixed cylinder, and a slidable synchronizing block disposed on the guide plate. There are two synchronizing blocks, each corresponding to one of the two welding torches. The welding torches are disposed on the synchronizing blocks. The guide plate has guide holes for the synchronizing blocks to slide, and the opening direction of the guide holes is consistent with the opening direction of the ejector port. A synchronizing plate corresponding to the guide plate is coaxially rotatably disposed on the fixed cylinder. The synchronizing plate is located on the side of the guide plate away from the welding torches. Two inclined synchronizing grooves are provided on the synchronizing plate. A synchronizing column is disposed on the synchronizing block, and two synchronizing columns correspond one-to-one with the two synchronizing grooves. The synchronizing column is located in the synchronizing groove and is movably abutted against the inner side wall of the synchronizing groove. A first power element for driving the synchronizing plate to rotate is disposed on the fixed cylinder.

2. The road metal guardrail welding and processing device according to claim 1, characterized in that: The positioning component includes a positioning rod slidably disposed within the fixed cylinder. The fixed cylinder has a sliding groove, and the positioning rod is located within the sliding groove and movably fits against the inner side wall of the sliding groove. There are three positioning rods, which are arranged at intervals of ° along the circumference of the fixed cylinder and avoid the material discharge port. The end of the positioning rod closest to the inside of the fixed cylinder is movably pressed against the outer side wall of the grid column. The mounting base is provided with a rotating component that drives the three positioning rods to slide closer to each other.

3. The road metal guardrail welding and processing device according to claim 2, characterized in that: The rotating component includes a sliding column disposed on the positioning rod, and a rotating plate is coaxially rotatably disposed on the fixed cylinder. The rotating plate has three rotating holes, which are arranged at an angle. The three sliding columns correspond one-to-one with the three rotating holes. The sliding columns are movably located inside the rotating holes and are movably pressed against the inner sidewall of the rotating holes. The fixed cylinder is provided with a second power component that drives the rotating plate to rotate.

4. The road metal guardrail welding and processing device according to claim 3, characterized in that: The adjusting component includes an adjusting block slidably disposed on the synchronizing block. The synchronizing block has an adjusting groove for the adjusting block to slide in. The adjusting groove is inclined at an angle of °. The adjusting block abuts against the inner sidewall of the adjusting groove. The welding torch is disposed on the adjusting block. A sliding rod is elastically slidably disposed on the synchronizing block. One end of the sliding rod protrudes movably from the sidewall of the synchronizing block, and the other end of the sliding rod is connected to the adjusting block. Limiting plates are fixed on two opposing positioning rods. The protruding end of the sliding rod abuts against the limiting plate.

5. The road metal guardrail welding and processing device according to claim 4, characterized in that: The driving component includes a driven gear coaxially mounted on the fixed cylinder. The driven gear is a semi-tooth ring shape. A driving gear is rotatably mounted on the mounting base. The driving gear meshes with the driven gear. A third power component that drives the driving gear to rotate is mounted on the mounting base.

6. The road metal guardrail welding and processing device according to claim 5, characterized in that: The moving component includes a support frame slidably mounted on the frame, two crossbeams placed opposite each other on the support frame, a locking structure for fixing the crossbeams on the support frame, a lead screw rotatably mounted on the frame, a movable nut coaxially threaded onto the lead screw, the movable nut being connected to the support frame, a fourth power component for driving the lead screw to rotate on the frame, and a grinding component for grinding the side walls of the two crossbeams that are close to each other on the frame.

7. A road metal guardrail welding and processing device according to claim 6, characterized in that: The grinding assembly includes two grinding wheels rotatably mounted on the support frame. The two grinding wheels are arranged opposite each other and are respectively attached to the side walls of the two crossbeams that are close to each other. The grinding wheels are coaxially equipped with drive gears. The frame is equipped with two fixed racks, which correspond one-to-one with the two drive gears. The drive gears mesh with the fixed racks.

8. The road metal guardrail welding and processing device according to claim 7, characterized in that: The positioning rod is rotatably equipped with a clamping wheel at one end near the inside of the fixed cylinder, and the outer peripheral wall of the clamping wheel is movably clamped against the outer side wall of the grid column.

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