A two-way welding device and process for welding steel box girder of viaduct

Abstract

The present application relates to a kind of two-way welding device and process for welding steel box girder of viaduct, it relates to welding device technical field, its device includes base, the welding frame is slidably connected on the base, welding frame includes two sliding columns, base includes two support tables, two sliding columns are respectively slid on two support tables, connecting table is set between two sliding columns, connecting table is set at the end of two sliding columns away from support table, the lower end of connecting table is slidably connected with the welding assembly for welding steel beam box. The assembled steel box girder is placed in the side of base, then welding frame is slid to the direction close to steel box girder, and welding assembly is moved to the position to be welded of steel box girder, then welding assembly can be operated to weld steel box girder.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a bidirectional welding device and process for welding steel box girders for viaducts. Background Technology

[0002] The steel box girder mainly consists of a top plate, a bottom plate, a web plate, and transverse diaphragms. Before splicing, the top plate needs to be welded to the ribs, and then the steel box girder can be spliced. After the steel box girder is spliced, the joints of the spliced ​​steel box girder need to be welded one by one to ensure the integrity and stability of the steel box girder.

[0003] The diaphragm has several grooves at equal intervals that fit the ribs. After splicing, the top plate abuts against the diaphragm, and the ribs abut against the side walls of the grooves.

[0004] When welding the top plate and the diaphragm, the length of each weld is relatively short and the side walls of the ribs are usually inclined, making machine welding difficult. Welding is usually done manually, but manual welding requires a high level of skill from the welder and is physically demanding. Summary of the Invention

[0005] To address the aforementioned problems, this application provides a bidirectional welding apparatus and process for welding steel box girders used in viaducts.

[0006] In a first aspect, this application provides a bidirectional welding device for welding steel box girders for viaducts, employing the following technical solution:

[0007] A bidirectional welding device for welding steel box girders for viaducts includes a base, a welding frame slidably connected to the base, the welding frame including two sliding columns, the base including two support platforms, the two sliding columns sliding on the two support platforms respectively, a connecting platform provided between the two sliding columns, the connecting platform being located at the end of the two sliding columns away from the support platforms, and a welding assembly for welding the steel box girders slidably connected to the lower end of the connecting platform.

[0008] By adopting the above technical solution, the assembled steel box girder is placed on one side of the base, and then the welding frame is manipulated to slide towards the steel box girder to move the welding assembly to the position of the steel box girder to be welded. Then the welding assembly can be manipulated to weld the steel box girder. This method is highly convenient and has low manual labor intensity.

[0009] Optionally, both sliding columns include an inner column and an outer column, with the inner column and outer column corresponding one-to-one. The outer column is located outside the corresponding inner column, and the inner column is slidably connected to the inside of the corresponding outer column. Each of the two outer columns is vertically equipped with an adjusting cylinder, and the piston rod of the adjusting cylinder is fixedly connected to the corresponding inner column.

[0010] By adopting the above technical solution, if the height of the steel box girder to be welded is relatively high, the piston rod of the adjusting cylinder is extended, thereby driving the inner column to move away from the outer column. The sliding column is extended, thereby driving the welding assembly to move in the height direction, thus improving the applicability of the welding assembly. Steel box girders of different heights can be welded, which is more convenient and reduces the labor intensity of manual labor.

[0011] Optionally, the welding assembly includes a welding box, a left inclined rod slidably connected inside the welding box, a welding gun being provided at the end of the left inclined rod, and a lower horizontal rod slidably connected inside the welding box, with a welding gun also being provided at the end of the lower horizontal rod.

[0012] By adopting the above technical solution, the welding torch is brought into contact with the part of the steel box girder to be welded, and then the steel box girder is welded by simultaneously sliding the left diagonal bar and the lower horizontal bar. The welding efficiency is relatively high.

[0013] Optionally, the welding assembly further includes an upper horizontal bar and a right diagonal bar, both of which are slidably connected to the welding box. The ends of the upper horizontal bar and the right diagonal bar are also equipped with welding guns, and several welding guns extend to the outside of the welding box.

[0014] By adopting the above technical solution, the welding torch is brought into contact with the part of the steel box girder to be welded, and then the upper horizontal bar and the right diagonal bar are slid simultaneously to weld the steel box girder, which results in high welding efficiency.

[0015] Optionally, a gear 1 is rotatably connected inside the welding box, and a rack 1 is arranged on the left inclined rod near the gear 1, with the rack 1 meshing with the gear 1. A gear 2 is rotatably connected inside the welding box, with the gear 1 and gear 2 being coaxially fixedly connected. A rack 2 is arranged on the lower horizontal rod near the gear 2, with the rack 2 meshing with the gear 2.

[0016] By adopting the above technical solution, the left inclined rod and the lower horizontal rod are moved by manipulating the rotation of gear one and gear two. The structure is simple and the drive is convenient.

[0017] Optionally, a gear three is rotatably connected inside the welding box, and a rack three is arranged on the side of the upper flat rod near the gear three. The rack three meshes with the gear three. A gear four is also rotatably connected inside the welding box, and a rack four is arranged on the side of the right oblique rod near the gear four. The gear four meshes with the rack four. Gear three and gear four are coaxially fixedly connected.

[0018] By adopting the above technical solution, the upper horizontal rod and the right diagonal rod are driven to slide by manipulating the rotation of gear three and gear four. The structure is simple and the drive is convenient.

[0019] Optionally, the welding box is provided with two synchronous pulleys on the side away from the welding gun. One synchronous pulley is coaxially and fixedly connected to the gear, and the other synchronous pulley is coaxially and fixedly connected to the gear. The two synchronous pulleys are covered with synchronous belts.

[0020] By adopting the above technical solution, one synchronous pulley is rotated, which drives another synchronous pulley to rotate via the synchronous belt. This, in turn, drives gears one, two, three, and four to rotate simultaneously. This, in turn, drives the left diagonal rod, lower horizontal rod, upper horizontal rod, and right diagonal rod to slide simultaneously. This, in turn, drives several welding torches to move simultaneously, thus welding the parts of the steel box girder to be welded. The welding efficiency is high, the convenience is high, and the labor intensity of manual labor is low.

[0021] Optionally, a sliding groove is provided at the lower end of the connecting platform, and a screw is rotatably connected to the side wall of the sliding groove. The screw is arranged along the length of the sliding groove, and the welding box is threadedly connected to the screw.

[0022] By adopting the above technical solution, the rotation of the screw is manipulated to drive the welding box to slide along the length of the connecting platform, thereby adjusting the position of the welding box and the welding gun, and welding is performed on different positions of the steel box beam. The structure is simple and the drive is convenient.

[0023] Optionally, one of the support platforms has a cavity at its upper end, a sliding column extends into the cavity, and a threaded rod is rotatably connected to the side wall of the cavity. The threaded rod is arranged along the length of the cavity, and the sliding column is threadedly connected to the threaded rod.

[0024] By adopting the above technical solution, the welding frame can be driven to slide along the length of the support platform by manipulating the rotation of the threaded rod II, thereby driving the welding assembly to move closer to or away from the steel box girder. The structure is simple and the drive is convenient.

[0025] Secondly, this application provides a bidirectional welding process for welding steel box girders for viaducts, employing the following technical solution:

[0026] A bidirectional welding process for welding steel box girders for viaducts includes the following steps:

[0027] S1: After the steel beam box is assembled, place it on one side of the welding device;

[0028] S2: Slide the welding frame closer to the steel beam box;

[0029] S3: Manipulate one of the synchronous pulleys to rotate, which drives the other synchronous pulley to rotate, which drives gear one, gear two, gear three and gear four to rotate, which drives rack one, rack two, rack three and rack four to slide, which drives several welding guns to move, and welds the top plate, one of the ribs and the side wall of the groove.

[0030] S4: Manipulate the welding box to slide it to the next position to be welded;

[0031] S5: Repeat step S3 until the welding of the top plate and the diaphragm is completed.

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

[0033] 1. The key innovation of this application is that by manipulating one of the synchronous pulleys to rotate, and through the transmission of the synchronous belt, another synchronous pulley is driven to rotate, which in turn drives gear one, gear two, gear three and gear four to rotate simultaneously, which in turn drives the left diagonal rod, lower horizontal rod, upper horizontal rod and right diagonal rod to slide simultaneously, which in turn drives several welding guns to move simultaneously, so as to weld the parts of the steel box girder to be welded. This method has high efficiency and convenience in welding ribs and has low manual labor intensity. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of a bidirectional welding device used for welding steel box girders for viaducts.

[0035] Figure 2 This is a cross-sectional schematic diagram highlighting the regulating cylinder.

[0036] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0037] Figure 4 This is a schematic diagram highlighting the second threaded rod.

[0038] Figure 5 yes Figure 1 Enlarged diagram of part B.

[0039] Explanation of reference numerals in the attached drawings: 100, top plate; 200, rib plate; 300, transverse partition plate; 400, groove; 1, base; 11, support platform; 111, cavity; 112, threaded rod II; 12, motor II; 2, welding frame; 21, sliding column; 211, inner column; 212, outer column; 213, adjusting cylinder; 22, connecting platform; 221, slide groove; 222, screw I; 223, motor I; 3. Welding components; 31. Welding box; 311. Gear 1; 312. Gear 2; 313. Gear 3; 314. Gear 4; 315. Synchronous pulley; 316. Synchronous belt; 317. Drive motor; 32. Left slant bar; 321. Rack 1; 33. Lower horizontal bar; 331. Rack 2; 34. Upper horizontal bar; 341. Rack 3; 35. Right slant bar; 351. Rack 4; 36. Welding torch. Detailed Implementation

[0040] The present application will be further described in detail below with reference to all the accompanying drawings.

[0041] This application discloses a bidirectional welding device for welding steel box girders for viaducts.

[0042] Reference Figure 1 and Figure 2 A bidirectional welding device for welding steel box girders for viaducts includes a base 1, a welding frame 2 slidably connected to the base 1, the welding frame 2 including two sliding columns 21, and the base 1 including two support platforms 11. The two sliding columns 21 slide on the two support platforms 11 respectively, and a connecting platform 22 is provided between the two sliding columns 21. The connecting platform 22 is located at the end of the two sliding columns 21 away from the support platforms 11. A welding assembly 3 for welding the steel box girder is slidably connected to the lower end of the connecting platform 22. The assembled steel box girder is placed on one side of the base 1, and then the welding frame 2 is manipulated to slide towards the steel box girder, moving the welding assembly 3 to the position of the steel box girder to be welded. Then the welding assembly 3 can be manipulated to weld the steel box girder. It has high convenience and low manual labor intensity.

[0043] Reference Figure 1 and Figure 2Each of the two sliding columns 21 includes an inner column 211 and an outer column 212. The inner column 211 and the outer column 212 correspond one-to-one. The outer column 212 is located outside the corresponding inner column 211. The inner column 211 is slidably connected to the inside of the corresponding outer column 212. Each of the two outer columns 212 is vertically equipped with an adjusting cylinder 213. The piston rod of the adjusting cylinder 213 is fixedly connected to the corresponding inner column 211. If the height of the steel box girder to be welded is high, by manipulating the piston rod of the two adjusting cylinders 213 to extend, the inner column 211 is moved away from the outer column 212. At this time, the sliding column 21 is extended, which in turn drives the welding assembly 3 to move in the height direction, thereby improving the applicability of the welding assembly 3. It can weld steel box girders of different heights, which is more convenient and reduces the labor intensity of manual labor.

[0044] Reference Figure 2 and Figure 3 The welding assembly 3 includes a welding box 31, a connecting platform 22 located at the upper end of two sliding columns 21, and a sliding groove 221 at the lower end of the connecting platform 22. A screw 222 is rotatably connected to the side wall of the sliding groove 221. The screw 222 is arranged along the length of the sliding groove 221. The welding box 31 is threadedly connected to the screw 222. A motor 223 is provided at one end of the connecting platform 22 along its length. The output shaft of the motor 223 extends into the sliding groove 221 and is coaxially fixedly connected to the screw 222. By manipulating the rotation of the motor 223, the screw 222 is driven to rotate, which in turn drives the welding box 31 to move to the position of the steel box beam to be welded. The structure is simple and the drive is convenient.

[0045] Reference Figure 4 One of the support platforms 11 has a cavity 111 at its upper end, and a sliding column 21 extends into the cavity 111. A threaded rod 112 is rotatably connected to the side wall of the cavity 111. The threaded rod 112 is arranged along the length of the cavity 111. One of the sliding columns 21 is threadedly connected to the threaded rod 112. A motor 12 is provided at one end of the support platform 11 along its length. The output shaft of the motor 12 extends into the cavity 111 and is coaxially fixedly connected to the threaded rod 112. By operating the output shaft of the motor 12 to rotate, the threaded rod 112 is driven to rotate, thereby driving the welding frame 2 to move closer to the steel box girder. The structure is simple and the drive is convenient.

[0046] Reference Figure 3A left inclined rod 32 is slidably connected inside the welding box 31. A welding gun 36 is provided at the end of the left inclined rod 32. A lower horizontal rod 33 is also slidably connected inside the welding box 31. A welding gun 36 is also provided at the end of the lower horizontal rod 33. The welding assembly 3 also includes an upper horizontal rod 34 and a right inclined rod 35. The upper horizontal rod 34 and the right inclined rod 35 are both slidably connected to the welding box 31. A welding gun 36 is also provided at the end of the upper horizontal rod 34 and the right inclined rod 35. Several welding guns 36 extend to the outside of the welding box 31.

[0047] Reference Figure 3 Gear 1 311 is rotatably connected inside welding box 31. A rack 1 321 is arranged on the side of the left inclined rod 32 near gear 1 311, and rack 1 321 meshes with gear 1 311. Gear 2 312 is rotatably connected inside welding box 31, and gear 1 311 and gear 2 312 are coaxially fixedly connected. A rack 2 331 is arranged on the side of the lower horizontal rod 33 near gear 2 312, and rack 2 331 meshes with gear 2 312. Gear 3 313 is rotatably connected inside welding box 31. A rack 3 341 is arranged on the side of the upper horizontal rod 34 near gear 3 313, and rack 341 meshes with gear 3 313. Gear 4 314 is also rotatably connected inside welding box 31. A rack 4 351 is arranged on the side of the right inclined rod 35 near gear 4 314, and gear 4 314 meshes with rack 4 351. Gear 3 313 and gear 4 314 are coaxially fixedly connected.

[0048] Reference Figure 3 and Figure 5 Two synchronous pulleys 315 are provided on the side of the welding box 31 away from the welding gun 36. One synchronous pulley 315 is coaxially and fixedly connected to gear 1 311, and the other synchronous pulley 315 is coaxially and fixedly connected to gear 3 313. The two synchronous pulleys 315 are covered with synchronous belts 316. A drive motor 317 is installed on the side of the welding box 31 away from the welding gun 36. The output shaft of the drive motor 317 is coaxially and fixedly connected to one of the synchronous pulleys 315. By operating the output shaft of the drive motor 317 to rotate, one of the synchronous pulleys 315 is driven to rotate. Through the transmission of the synchronous belt 316, another synchronous pulley 315 is driven to rotate, which in turn drives gear one 311, gear two 312, gear three 313 and gear four 314 to rotate simultaneously. This, in turn, drives the left inclined rod 32, lower horizontal rod 33, upper horizontal rod 34 and right inclined rod 35 to slide simultaneously, which in turn drives several welding guns 36 to move simultaneously, welding the parts of the steel box girder to be welded. The welding efficiency is high, the convenience is high, and the labor intensity of manual labor is low.

[0049] Reference Figure 1 and Figure 3The left diagonal bar 32 is welded to the inclined sidewall on the left side of the rib plate 200 and the groove 400, the right diagonal bar 35 is welded to the inclined sidewall on the right side of the rib plate 200 and the groove 400, the lower horizontal bar 33 is welded to the bottom wall of the groove 400 and the rib plate 200, and the upper horizontal bar 34 is welded to the junction of the transverse partition 300 and the top plate 100. The welding efficiency is relatively high.

[0050] Reference Figure 1 and Figure 4 After the welding of the steel box girder is completed, the welding frame 2 is moved away from the steel box girder. Then, by adjusting the position of the welding box 31, several welding guns 36 are adjusted to the next position to be welded, and then the welding of the steel box girder can continue. The welding efficiency is high and the manpower required is low.

[0051] The working principle of a bidirectional welding device for welding steel box girders for viaducts according to an embodiment of this application is as follows: The output shaft of motor 223 is rotated, driving screw 222 to rotate, which in turn moves the welding box 31 to the position where the steel box girder needs to be welded. The output shaft of motor 12 is rotated, driving screw 2 to rotate, which in turn moves the welding frame 2 towards the steel box girder. Several welding torches 36 are placed against the position where the steel box girder needs to be welded. Then, the drive motor 317 is rotated, driving two synchronous pulleys 315 to rotate, which in turn drives gears 311, 312, 313, and 314 to rotate. When gear 311 rotates, it drives rack 321 to move; when gear 212 rotates, it drives rack 331 to move; when gear 314 rotates, it drives rack 321 to move; when gear 315 rotates, it drives rack 32 ... When the gear rotates, it drives rack 341 to move, and when gear 414 rotates, it drives rack 451 to move, which in turn drives the four welding guns 36 to move, thus welding the steel box girder. The left diagonal bar 32 welds the rib plate 200 and the inclined side wall on the left side of the groove 400, the right diagonal bar 35 welds the rib plate 200 and the inclined side wall on the right side of the groove 400, the lower horizontal bar 33 welds the bottom wall of the groove 400 and the rib plate 200, and the upper horizontal bar 34 welds the junction of the transverse diaphragm 300 and the top plate 100. The welding efficiency is high. After the steel box girder is welded, the welding frame 2 is moved away from the steel box girder. Then, by adjusting the position of the welding box 31, several welding guns 36 are adjusted to the next position to be welded, and then the welding of the steel box girder can continue. The welding efficiency is high and the manpower required is low.

[0052] This application also discloses a bidirectional welding process for welding steel box girders for viaducts.

[0053] A bidirectional welding process for welding steel box girders for viaducts includes the following steps:

[0054] S1: After the steel beam box is assembled, place it on one side of the welding device;

[0055] S2: Slide the welding frame 2 towards the steel beam box;

[0056] S3: Manipulate one of the synchronous pulleys 315 to rotate, which drives the other synchronous pulley 315 to rotate, which drives gear 1 311, gear 2 312, gear 3 313 and gear 4 314 to rotate, which drives rack 1 321, rack 2 331, rack 3 341 and rack 4 351 to slide, which drives several welding guns 36 to move, and weld the top plate 100, one of the ribs 200 and the side wall of the groove 400;

[0057] S4: Manipulate the welding box 31 to slide to the next position to be welded;

[0058] S5: Repeat step S3 until the welding of the top plate 100 and the diaphragm 300 is completed.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bidirectional welding device for welding steel box girders for viaducts, comprising a base (1), characterized in that: A welding frame (2) is slidably connected to the base (1). The welding frame (2) includes two sliding columns (21). The base (1) includes two support platforms (11). The two sliding columns (21) slide on the two support platforms (11) respectively. A connecting platform (22) is provided between the two sliding columns (21). The connecting platform (22) is located at the end of the two sliding columns (21) away from the support platform (11). A welding assembly (3) for welding steel beam boxes is slidably connected to the lower end of the connecting platform (22). The welding assembly (3) includes a welding box (31), a left inclined rod (32) is slidably connected inside the welding box (31), a welding gun (36) is provided at the end of the left inclined rod (32), and a lower horizontal rod (33) is also slidably connected inside the welding box (31), and a welding gun (36) is also provided at the end of the lower horizontal rod (33). The welding assembly (3) also includes an upper horizontal bar (34) and a right oblique bar (35). The upper horizontal bar (34) and the right oblique bar (35) are slidably connected to the welding box (31). The ends of the upper horizontal bar (34) and the right oblique bar (35) are also provided with welding guns (36). Several welding guns (36) extend to the outside of the welding box (31). Gear 1 (311) is rotatably connected inside the welding box (31). A rack 1 (321) is arranged on the side of the left inclined rod (32) near gear 1 (311). The rack 1 (321) meshes with gear 1 (311). Gear 2 (312) is rotatably connected inside the welding box (31). Gear 1 (311) and gear 2 (312) are coaxially fixedly connected. A rack 2 (331) is arranged on the side of the lower flat rod (33) near gear 2 (312). The rack 2 (331) meshes with gear 2 (312). Gear 3 (313) is rotatably connected inside the welding box (31). A rack 3 (341) is arranged on the side of the upper flat rod (34) near gear 3 (313). The rack 3 (341) meshes with gear 3 (313). Gear 4 (314) is also rotatably connected inside the welding box (31). A rack 4 (351) is arranged on the side of the right oblique rod (35) near gear 4 (314). Gear 4 (314) meshes with rack 4 (351). Gear 3 (313) and gear 4 (314) are coaxially fixedly connected.

2. The bidirectional welding device for welding steel box girders for viaducts according to claim 1, characterized in that: Both sliding columns (21) include an inner column (211) and an outer column (212). The inner column (211) and the outer column (212) correspond one-to-one. The outer column (212) is located outside the corresponding inner column (211). The inner column (211) is slidably connected to the inside of the corresponding outer column (212). An adjusting cylinder (213) is vertically installed inside each of the two outer columns (212). The piston rod of the adjusting cylinder (213) is fixedly connected to the corresponding inner column (211).

3. The bidirectional welding device for welding steel box girders for viaducts according to claim 1, characterized in that: Two synchronous pulleys (315) are provided on the side of the welding box (31) away from the welding gun (36). One of the synchronous pulleys (315) is coaxially and fixedly connected to gear one (311), and the other synchronous pulley (315) is coaxially and fixedly connected to gear three (313). The two synchronous pulleys (315) are covered with synchronous belts (316).

4. The bidirectional welding device for welding steel box girders for viaducts according to claim 1, characterized in that: The lower end of the connecting platform (22) is provided with a sliding groove (221), and a screw rod (222) is rotatably connected to the side wall of the sliding groove (221). The screw rod (222) is arranged along the length direction of the sliding groove (221), and the welding box (31) is threadedly connected to the screw rod (222).

5. A bidirectional welding device for welding steel box girders for viaducts according to claim 1, characterized in that: One of the support platforms (11) has a cavity (111) at its upper end, and a sliding column (21) extends into the cavity (111). A threaded rod (112) is rotatably connected to the side wall of the cavity (111). The threaded rod (112) is arranged along the length of the cavity (111), and one of the sliding columns (21) is threadedly connected to the threaded rod (112).

6. A bidirectional welding process for welding steel box girders for viaducts, characterized in that: The welding of steel box girders using the bidirectional welding device for welding steel box girders for viaducts as described in claim 3 includes the following steps: S1: After the steel beam box is assembled, place it on one side of the welding device; S2: Slide the welding frame (2) towards the steel beam box; S3: Manipulate one of the synchronous pulleys (315) to rotate, which drives the other synchronous pulley (315) to rotate, which drives gear one (311), gear two (312), gear three (313) and gear four (314) to rotate, which drives rack one (321), rack two (331), rack three (341) and rack four (351) to slide, which drives several welding guns (36) to move, and weld the top plate (100), one of the ribs (200) and the side wall of the groove (400); S4: Manipulate the welding box (31) to slide to the next position to be welded; S5: Repeat step S3 until the welding of the top plate (100) and the diaphragm (300) is completed.

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