A flange truss welding positioning tooling and its welding process

Abstract

This application relates to a welding positioning tooling for a flange truss and its welding process, which includes a base. At the top of the base, there are two positioning mechanisms for fixing the flange. Between the positioning mechanisms on the base, there are a first clamping mechanism and a second clamping mechanism for fixing the main beam; the positioning mechanism includes a positioning seat, on which a positioning disk is arranged. On the opposite side of the positioning disk, three through slots are provided, and a regular triangular limit slot is provided on the opposite side of the positioning disk. The through slots are located at the three corners of the limit slot. At the position of the through slots on the positioning disk, an arc-shaped slot for clamping the flange is provided, and a positioning component for fixing the flange is arranged in the through slots of the positioning disk. This application has the effects of facilitating the fixing of the flange and improving the welding accuracy of the flange and the main beam.

Description

Technical Field

[0001] The present application relates to the field of flange truss welding, and in particular, to a welding positioning tooling for flange trusses and its welding process. Background Technique

[0002] A truss is a structure formed by connecting rods with hinges at both ends. A truss is generally a planar or spatial structure composed of straight rods with triangular units. The truss rods mainly bear axial tension or compression, so that the strength of the material can be fully utilized. When the span is large, it can save materials compared with a solid web beam, reduce its own weight and increase its stiffness.

[0003] A kind of flange truss, see Figure 1 , including three main beams 1. An equilateral triangle is formed between the main beams 1. A plurality of reinforcing rods 12 are welded between adjacent main beams 1. Flanges 11 are welded at both ends of the main beam 1. When multiple layers of flange trusses need to be connected, they can be butted through the flanges 11 and then fixed by bolts, that is, adjacent flange trusses can be fixed. Higher precision requirements are required for the welding position of the flanges 11 on each truss to enable bolts to pass through between the flanges 11 of adjacent trusses.

[0004] In view of the above related technologies, the inventor believes that a welding tooling that is convenient for fixing the flange 11 and the column 12 is an urgent problem to be solved. Summary of the Invention

[0005] In order to facilitate the fixing of the flange and improve the welding precision of the flange, the present application provides a welding positioning tooling for flange trusses.

[0006] The welding positioning tooling for flange trusses provided by the present application adopts the following technical solutions:

[0007] A welding positioning tooling for a flange truss includes a base. Two positioning mechanisms for fixing the flange are arranged on the top of the base. A clamping mechanism I and a clamping mechanism II for fixing the main beam are arranged between the positioning mechanisms on the base; the positioning mechanism includes a positioning seat, a positioning disk is arranged on the positioning seat. Three through grooves are opened on one side of the positioning disk opposite to each other. A regular triangular limiting groove is opened on one side of the positioning disk opposite to each other. The through grooves are located at the three corners of the limiting groove. An arc groove for clamping the flange is opened at the position of the through groove on the positioning disk. A positioning component for fixing the flange is arranged in the through groove of the positioning disk.

[0008] By adopting the above technical solutions, when welding a flange truss, the flange is clamped in the limiting groove of the positioning disk, then the flange and the positioning disk are fixed by the positioning component, and then the main beam and the flange are fixed by the clamping mechanism I and the clamping mechanism II, that is, it is convenient to weld the main beam and the flange together and improve the welding precision of the flange.

[0009] Optionally, the positioning assembly includes a fixed disk fixed in the through groove of the positioning disk. A positioning column is fixed on one side of the fixed disk facing the limiting groove. A pressure ring is sleeved on the positioning column. Three connecting rods I are evenly hinged to the pressure ring along its circumferential direction. One end of the connecting rod I away from the pressure ring is hinged to a connecting rod II. One end of the connecting rod II away from the connecting rod I is hinged to the end of the positioning column away from the fixed disk. A top plate is fixed at the hinged part of the connecting rod I and the connecting rod II. The top plate is arranged parallel to the axial direction of the positioning column. A pushing cylinder is fixed on the positioning column. The cylinder body of the pushing cylinder is fixed on the fixed disk, and the end of the piston rod of the pushing cylinder is fixed on the pressure ring.

[0010] By adopting the above technical solution, when fixing the flange, first snap the flange into the arc groove of the positioning disk. Then, the piston rod of the pushing cylinder extends, pushing the pressure ring to slide away from the fixed disk. The connecting rod I and the connecting rod II push the top plate to move away from the positioning column, increasing the distance from the three top plates to the axis of the positioning column, so that the top plate abuts against the inner wall of the flange, and the flange can be fixed on the positioning disk. When disassembling, the piston rod of the pushing cylinder retracts, driving the pressure ring to slide towards the fixed disk. The connecting rod I and the connecting rod II drive the top plate to slide towards the positioning column, separating the top plate from the side wall of the flange, facilitating the removal of the flange from the positioning disk.

[0011] Optionally, a vertically arranged hydraulic cylinder is fixed on the top of the positioning seat. The end of the piston rod of the hydraulic cylinder is fixed with a support plate. A driving motor is fixed on the top of the support plate. The output shaft of the driving motor is fixed to the positioning disk, and the support plate is provided with a positioning member for fixing the positioning disk.

[0012] By adopting the above technical solution, the positioning disk is used to fix the flange. The driving motor drives the positioning disk to rotate, and the flange can be rotated, facilitating the welding of the reinforcing bars on the main beam.

[0013] Optionally, a receiving groove is opened on one side of the support plate close to the positioning disk. The positioning member includes a positioning spring fixed in the receiving groove. One end of the positioning spring is fixed on the inner wall of the receiving groove, and the other end is fixed with a limiting post. A slot for the limiting post to be inserted is opened on the positioning disk.

[0014] By adopting the above technical solution, when the limiting post is inserted into the slot of the positioning disk, it is convenient to fix the positioning disk and prevent the positioning disk from shaking during the welding process.

[0015] Optionally, a T-shaped slider is fixed at the bottom of the positioning seat. A T-shaped sliding groove is opened on the top of the base along its length direction. The T-shaped slider at the bottom of the positioning seat is slidably connected in the T-shaped sliding groove of the base. Bolts are threadedly connected to the opposite sides of the positioning seat.

[0016] By adopting the above technical solutions, the bolt facilitates fixing the positioning seat on the base. The positioning seat can slide on the base, facilitating the adjustment of the distance between the positioning seats, enabling welding of main beams with different sizes, and also facilitating the removal of the welded flange truss.

[0017] Optionally, a hydraulic cylinder is fixedly arranged on the top of the positioning seat. A vertically arranged limiting block is fixedly arranged on the side of the cylinder body of the hydraulic cylinder close to the positioning disk. A clamping groove is arranged on the side of the limiting block facing the positioning disk. Three limiting strips are fixedly arranged on the side of the positioning disk far from the limiting groove. The limiting strips are evenly arranged along the circumferential direction of the positioning disk, and the limiting strips can be clamped in the clamping groove.

[0018] By adopting the above technical solutions, the limiting strips can be clamped in the clamping groove, enabling positioning of the positioning disk; when the piston rod of the hydraulic cylinder extends, pushing the positioning disk to move upward to disengage the limiting strips from the clamping groove does not affect the rotation of the positioning disk.

[0019] Optionally, the first clamping mechanism includes a plurality of portal frames fixedly arranged on the top of the base. The portal frames are arranged perpendicular to the sliding direction of the positioning seat. Two through holes are arranged on the top of the portal frame. A screw rod passes through the through holes. Nuts are threadedly connected to both sides of the screw rod located in the portal frame. An arc-shaped plate is fixedly arranged on the top of the screw rod, and the arc-shaped plate is used for clamping the main beam.

[0020] By adopting the above technical solutions, after the flange is fixed, the main beam can be clamped between the flanges, and two of the main beams are clamped in the arc-shaped plate, that is, two of the main beams can be fixed.

[0021] Optionally, the second clamping mechanism includes a support rod fixedly arranged on the top of one of the support plates. A positioning rod is rotatably connected to the top of the support rod. One end of the positioning rod is hinged to the top of the support rod. A plurality of clamping seats are arranged along the length direction of the positioning rod. An arc-shaped clamping plate I is fixedly arranged at the bottom of the clamping seat. The arc-shaped clamping plate I bends downward. An arc-shaped clamping plate II is hinged to one side of the arc-shaped clamping plate I. The free end of the arc-shaped clamping plate II is a free end, and a stud is hinged to the free end of the arc-shaped clamping plate II. A notch groove is arranged on the side of the arc-shaped clamping plate I far from the hinged end. The bolt can rotate in the notch groove and is threadedly connected to a nut.

[0022] By adopting the above technical solutions, by rotating the stud into the notch groove and then fixing it with a nut, the arc-shaped clamping plate I and the arc-shaped clamping plate II can be fixed. The arc-shaped clamping plate I and the arc-shaped clamping plate II jointly form a circular groove for clamping the main beam; the remaining main beam can be fixed by the arc-shaped clamping plate I and the arc-shaped clamping plate II.

[0023] In order to facilitate the fixing of the flange and improve the welding accuracy of the flange and the main beam, the present application provides a welding process for a welding positioning tooling of a flange truss.

[0024] A welding process for a welding positioning tooling of a flange truss includes the following steps:

[0025] S1. Fixed flange: Clamp the flange in the limiting groove of the positioning disk, and then fix the flange and the positioning disk.

[0026] S2. Fix the main beam: First, engage the two main beams at the bottom with the arc-shaped plate, and make the two ends of the main beam abut against the flange. Then, turn the positioning rod so that the arc-shaped clamping plate I at the bottom of the positioning rod engages with the main beam at the top. Rotate the arc-shaped clamping plate II so that the arc-shaped clamping plate I and the arc-shaped clamping plate II jointly surround the outer side wall of the main beam. Then, rotate the bolt on the arc-shaped clamping plate II into the notch groove of the arc-shaped clamping plate I, and fix the arc-shaped clamping plate I and the arc-shaped clamping plate II through the bolt.

[0027] S3. Weld the main beam and the flange: Manually weld the connection part of the flange and the main beam to fix the main beam and the flange together.

[0028] S4. Weld the reinforcing rod: First, weld the reinforcing rods between the two main beams at the bottom and the main beam at the top. Then, extend the piston rod of the hydraulic cylinder to push the support plate and the positioning disk upward, so that the limiting strip disengages from the clamping groove. Then, the driving motor drives the positioning disk to rotate 120°, and rotates the two cross beams at the bottom upward to facilitate welding the reinforcing rods.

[0029] By adopting the above technical solution, first fix the flange in the limiting groove of the positioning disk and tighten it with the top plate, then fix the main beam and the flange, so that the main beam and the flange can be fixed together. Then, weld the main beam and the flange together. Finally, weld the reinforcing rods between the main beams.

[0030] Optionally, in S1, control the piston rod of the pushing cylinder to extend, push the pressure ring to slide away from the fixed disk, and the connecting rod I and the connecting rod II push the top plate to move away from the positioning column, so that the top plate abuts against the inner wall of the flange.

[0031] By adopting the above technical solution, the pushing cylinder pushes the pressure ring to move away from the fixed disk, increasing the distance from the three top plates to the axis line of the positioning column, and making the top plate abut against the inner wall of the flange, so that the flange can be fixed on the positioning disk, that is, the flange and the positioning disk can be fixed.

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

[0033] 1. By arranging a first clamping mechanism and a second clamping mechanism for fixing the main beam between the positioning mechanisms on the base; the positioning mechanism includes a positioning seat, on which a positioning disk is arranged. On one side of the positioning disk opposite to each other, three through grooves are opened, and a regular triangular limiting groove is opened on one side of the positioning disk opposite to each other. The through grooves are located at the three corners of the limiting groove. At the position of the through groove on the positioning disk, an arc groove for clamping the flange is opened. A positioning component for fixing the flange is arranged in the through groove of the positioning disk. When welding the flange truss, the flange is clamped in the limiting groove of the positioning disk, then the flange and the positioning disk are fixed through the positioning component, and then the main beam and the flange are fixed through the first clamping mechanism and the second clamping mechanism, so that it is convenient to weld the main beam and the flange together and improve the welding precision of the flange;

[0034] 2. By fixedly arranging a plurality of portal frames on the top of the base, the portal frames are arranged perpendicular to the sliding direction of the positioning seat. Two through holes are opened at the top of the portal frame, and a screw rod passes through the through holes. Nuts are threadedly connected to both sides of the screw rod located in the portal frame. An arc plate is fixedly arranged at the top of the screw rod, and the arc plate is used for clamping the main beam. After fixing the flange, the main beam can be clamped between the flanges, and two of the main beams are clamped in the arc plate, so that two of the main beams can be fixed;

[0035] 3. By arranging a support rod on the top of the support plate, one end of a positioning rod is rotatably connected to the top of the support rod, and one end of the positioning rod is hinged to the top of the support rod. A plurality of clamping seats are arranged along the length direction of the positioning rod. An arc-shaped clamping plate one is fixedly arranged at the bottom of the clamping seat, and the arc-shaped clamping plate one bends downward. One side of the arc-shaped clamping plate one is hinged to an arc-shaped clamping plate two, and the side of the arc-shaped clamping plate two away from the arc-shaped clamping plate one is a free end, and a stud is hinged to the free end of the arc-shaped clamping plate two. A notch groove is opened on one side of the arc-shaped clamping plate one away from the hinge end. The bolt can rotate in the notch groove and is threadedly connected to a nut. By rotating the stud into the notch groove and then fixing it with the nut, the arc-shaped clamping plate one and the arc-shaped clamping plate two can be fixed, and the arc-shaped clamping plate one and the arc-shaped clamping plate two jointly form a circular groove for clamping the main beam; the remaining main beam can be fixed by the arc-shaped clamping plate one and the arc-shaped clamping plate two. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the flange truss in the background art.

[0037] Figure 2 It is an overall structural schematic diagram of the flange welding positioning tooling and the flange truss in the first embodiment.

[0038] Figure 3 It is an overall structural schematic diagram of the first embodiment.

[0039] Figure 4 It is an overall structural schematic diagram of the positioning mechanism in the first embodiment.

[0040] Figure 5 It isFigure 4 An enlarged view of part A.

[0041] Figure 6 It is an exploded view of the positioning mechanism in the first embodiment.

[0042] Figure 7 It is an exploded view of the positioning component in the first embodiment.

[0043] Figure 8 It is a schematic diagram of the overall structure of the clamping mechanism II in the first embodiment.

[0044] Explanation of reference numerals: 1, main beam; 11, flange; 12, reinforcing bar; 2, base; 21, T-shaped chute; 3, positioning mechanism; 31, positioning seat; 311, T-shaped slider; 32, hydraulic cylinder; 33, support plate; 331, receiving groove; 332, positioning spring; 333, limit post; 34, positioning disc; 341, slot; 342, through groove; 343, limit groove; 344, arc groove; 345, limit strip; 35, driving motor; 36, positioning component; 361, fixed disc; 362, positioning post; 363, pressure ring; 364, connecting rod I; 365, connecting rod II; 366, top plate; 367, push cylinder; 37, limit block; 371, clamping groove; 4, clamping mechanism I; 41, portal frame; 42, through hole; 43, screw; 44, arc plate; 5, clamping mechanism II; 51, support rod; 52, positioning rod; 53, clamping seat; 54, arc clamping plate I; 541, notch groove; 55, arc clamping plate II; 551, stud; 56, limit rod. Detailed implementation manners

[0045] The following further elaborates on this application in conjunction with the attached Figure 2-8 for a more detailed description.

[0046] The first embodiment of this application discloses a welding positioning tool for a flange truss. Refer to Figure 2 , a welding positioning tool for a flange truss includes a base 2. Two positioning mechanisms 3 with the same structure are arranged on the top of the base 2. The positioning mechanism 3 is used to fix the flange 11. A clamping mechanism I 4 for fixing two of the main beams 1 is arranged between the two positioning mechanisms 3 on the base 2. A clamping mechanism II 5 for positioning the remaining main beam 1 is arranged on one of the positioning mechanisms 3. When welding the flange truss, the flange 11 is fixed by the positioning mechanism 3, and then the main beam 1 is fixed by the clamping mechanism I 4 and the clamping mechanism II 5, so that the flange 11 and the main beam 1 can be welded together.

[0047] Refer to Figure 3, the positioning mechanism 3 includes a positioning seat 31 slidably connected to the base 2. Two T-shaped sliders 311 are fixedly provided at the bottom of the positioning seat 31. Two T-shaped chutes 21 are opened at the top of the base 2 along its length direction. The T-shaped sliders 311 at the bottom of the positioning seat 31 are slidably connected to the T-shaped chutes 21 of the base 2. Bolts are threadedly connected to the opposite sides of the positioning seat 31. The bolts facilitate fixing the positioning seat 31 to the base 2, facilitating the adjustment of the distance between the positioning seats 31, enabling the welding of main beams 12 of different sizes, and also facilitating the removal of the welded flange truss.

[0048] See Figure 4 and Figure 5 , a hydraulic cylinder 32 is fixedly provided at the top of the positioning seat 31. The hydraulic cylinder 32 is vertically arranged. The cylinder body of the hydraulic cylinder 32 is fixedly provided on the positioning seat 31. A support plate 33 is fixedly provided at the end of the piston rod of the hydraulic cylinder 32. A driving motor 35 is fixedly provided at the top of the support plate 33. The output shaft of the driving motor 35 extends to the opposite side of the support plate 33 and is fixedly provided with a positioning disc 34. The positioning disc 34 is used to fix the flange 11. When the driving motor 35 drives the positioning disc 34 to rotate, the flange 11 can be rotated, facilitating the welding of the reinforcing bar 12 on the main beam 1. A receiving groove 331 is opened on one side of the support plate 33 close to the positioning disc 34. A positioning spring 332 is fixedly provided in the receiving groove 331. One end of the positioning spring 332 is fixedly provided on the inner wall of the receiving groove 331, and the other end is fixedly provided with a limiting post 333. The axial direction of the limiting post 333 is horizontally arranged. A slot 341 for inserting the limiting post 333 is opened on the positioning disc 34. The limiting post 333 is inserted into the slot 341 of the positioning disc 34, facilitating the fixing of the positioning disc 34.

[0049] See Figure 4 and Figure 6 , three through slots 342 are opened on the opposite side of the positioning disc 34. A limiting groove 343 in an equilateral triangle shape is opened on the opposite side of the positioning disc 34. The through slots 342 are located at the three corners of the limiting groove 343. An arc groove 344 is opened on the positioning disc 34 at the position of the through slot 342. The arc groove 344 is used to clamp the flange 11. A positioning assembly 36 for fixing the flange 11 is arranged in the through slot 342 of the positioning disc 34.

[0050] See Figure 7The positioning assembly 36 includes a fixed plate 361 fixed in the through groove 342 of the positioning plate 34, a positioning column 362 is fixed on the side of the fixed plate 361 facing the limiting groove 343, a pressure ring 363 is sleeved on the positioning column 362, and the pressure ring 363 is evenly hinged with three connecting rods 1 364 along its circumference, and the end of the connecting rod 1 364 away from the pressure ring 363 is hinged with a connecting rod 2 365, and the end of the connecting rod 2 365 away from the connecting rod 1 364 is hinged to the end of the positioning column 362 away from the fixed plate 361, and a top plate 366 is fixed at the hinge of the connecting rod 1 364 and the connecting rod 2 365, and the top plate 366 and the axial direction of the positioning column 362 are arranged parallel, and a thrust cylinder 367 is fixed on the positioning column 362, and the cylinder body of the thrust cylinder 367 is fixed on the fixed plate 361, and the end of the piston rod of the thrust cylinder 367 is fixed on the pressure ring 363 When fixing the flange 11, the flange 11 is first clamped in the arc groove 344 of the positioning plate 34, and then the piston rod of the thrust cylinder 367 is extended to push the pressure ring 363 to slide in the direction away from the fixed plate 361, and the connecting rod 1 364 and the connecting rod 2 365 push the top plate 366 to move in the direction away from the positioning column 362, thereby increasing the distance between the three top plates 366 and the axial center line of the positioning column 362, so that the top plate 366 abuts against the inner wall of the flange 11, and the flange 11 can be fixed on the positioning plate 34; when disassembling, the piston rod of the thrust cylinder 367 is retracted, driving the pressure ring 363 to slide in the direction of the fixed plate 361, and the connecting rod 1 364 and the connecting rod 2 365 drive the top plate 366 to slide in the direction of the positioning column 362, so that the top plate 366 and the side wall of the flange 11 are separated, which facilitates the removal of the flange 11 from the positioning plate 34.

[0051] See also Figure 4 A limit block 37 is fixedly provided on the side of the cylinder body of the hydraulic cylinder 32 close to the positioning disk 34. The limit block 37 is vertically arranged. A slot 371 is opened on the side of the limit block 37 facing the positioning disk 34. Three limit bars 345 are fixedly provided on the side of the positioning disk 34 away from the limit slot 343. The limit bars 345 are evenly arranged along the circumference of the positioning disk 34. The limit bars 345 can be snapped into the slot 371 to position the positioning disk 34. When the piston rod of the hydraulic cylinder 32 is extended, the positioning disk 34 is pushed upward to disengage the limit bar 345 from the slot 371 without affecting the rotation of the positioning disk 34.

[0052] See also Figure 3, the first clamping mechanism 4 includes a gantry 41 fixedly arranged on the top of the base 2. There are multiple gantries 41, and the gantry 41 is arranged perpendicular to the sliding direction of the positioning seat 31. Two through holes 42 are opened at the top of the gantry 41, and a screw rod 43 passes through the through holes 42. Nuts are threadedly connected to both sides of the screw rod 43 within the gantry 41. An arc-shaped plate 44 is fixedly arranged at the top of the screw rod 43, and the arc-shaped plate 44 is used for clamping the main beam 1. After the flange 11 is fixed, the main beam 1 can be clamped between the flanges 11. Two of the main beams 1 are clamped within the arc-shaped plate 44, that is, two of the main beams 1 can be fixed.

[0053] See Figure 3 and Figure 8 , the second clamping mechanism 5 includes a support rod 51 fixedly arranged on the top of one of the support plates 33. A positioning rod 52 is rotatably connected to the top of the support rod 51. One end of the positioning rod 52 is hinged to the top of the support rod 51. A plurality of clamping seats 53 are arranged along the length direction of the positioning rod 52. An arc-shaped clamping plate one 54 is fixedly arranged at the bottom of the clamping seat 53. The arc-shaped clamping plate one 54 bends downward. An arc-shaped clamping plate two 55 is hinged to one side of the arc-shaped clamping plate one 54. The free end of the arc-shaped clamping plate two 55 away from the arc-shaped clamping plate one 54 is a free end, and a stud 551 is hinged to the free end of the arc-shaped clamping plate two 55. A notch groove 541 is opened on one side of the arc-shaped clamping plate one 54 away from the hinged end. By rotating the stud 551 into the notch groove 541 and then fixing it with a nut, the arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55 can be fixed. The arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55 jointly form a circular groove for clamping the main beam 1. The remaining main beam 1 can be fixed by the arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55. A limiting rod 56 is fixedly arranged at the top of the support rod 51. The limiting rod 56 is horizontally arranged, and the limiting rod 56 is used for supporting and limiting the positioning rod 52. When the arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55 on the positioning rod 52 do not fix the main beam 1, the positioning rod 52 can be flipped towards the direction of the limiting rod 56, so that the positioning rod 52 does not interfere with the disassembly and installation of the flange truss.

[0054] The implementation principle of a welding positioning tooling for a flange truss in the first embodiment of this application is as follows: Install the flange 11 on the arc-shaped groove 344 of the positioning disk 34. The piston rod of the pushing air cylinder 367 extends, pushing the pressure ring 363 to slide away from the fixed disk 361. The first connecting rod 364 and the second connecting rod 365 push the top plate 366 to move away from the positioning column 362, increasing the distance from the three top plates 366 to the axis of the positioning column 362, so that the top plate 366 abuts against the inner wall of the flange 11, that is, the flange 11 can be fixed on the positioning disk 34. Then, the two main beams 1 close to the base 2 are clamped within the arc-shaped plate 44. Finally, the remaining main beam 1 is clamped between the flanges 11. Rotate the positioning rod 52 so that the arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55 at the bottom of the positioning rod 52 clamp the main beam 1, that is, the positioning disk 34 and the main beam 1 can be fixed, facilitating welding.

[0055] After welding is completed, the reinforcing bar 12 between the main beam 1 near the bottom and the top main beam 1 can be welded. After welding is completed, the arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55 are separated. The piston rod of the hydraulic cylinder 32 extends, pushing the positioning plate 34 upward, so that the limiting strip 345 is separated from the clamping groove 371. Then, the driving motor 35 drives the positioning plate 34 to rotate, turning the two main beams 1 at the bottom upward to facilitate welding of the reinforcing bar 12 between the two main beams 1 at the bottom.

[0056] Embodiment II of the present application discloses a welding process for a flange truss, including the following steps:

[0057] S1. Fix the flange 11: Clamp the flange 11 in the limiting groove 343 of the positioning plate 34, control the piston rod of the pushing air cylinder 367 to extend, push the pressure ring 363 to slide away from the fixed plate 361, and the link one 364 and the link two 365 push the top plate 366 to move away from the positioning column 362, increasing the distance from the three top plates 366 to the axis line of the positioning column 362, so that the top plate 366 abuts against the inner wall of the flange 11, that is, the flange 11 can be fixed on the positioning plate 34, and the flange 11 and the positioning plate 34 can be fixed.

[0058] S2. Fix the main beam 1: First, adjust the position of the screw 43 on the gantry 41 so that the two main beams 1 at the bottom are clamped in the arc-shaped plate 44, and the two ends of the main beam 1 abut against the flange 11; then turn the positioning rod 52 so that the arc-shaped clamping plate one 54 at the bottom of the positioning rod 52 is clamped on the top main beam 1, rotate the arc-shaped clamping plate two 55 so that the arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55 jointly surround the outer side wall of the main beam 1, and then turn the bolt on the arc-shaped clamping plate two 55 into the notch groove 541 of the arc-shaped clamping plate one 54, and fix the arc-shaped clamping plate one 54 and the arc-shaped clamping plate two 55 through the bolt, that is, the main beam 1 and the flange 11 can be fixed.

[0059] S3. Weld the main beam 1 and the flange 11: Manually weld the connection between the flange 11 and the main beam 1 to fix the main beam 1 and the flange 11 together.

[0060] S4. Weld the reinforcing bar 12: First, weld the reinforcing bar 12 between the two main beams 1 at the bottom and the top main beam 1; after welding the reinforcing bar 12 between the bottom main beam 1 and the top main beam 1, weld the reinforcing bar 12 between the two main beams 1 at the bottom. Then, the piston rod of the hydraulic cylinder 32 extends, pushing the support plate 33 and the positioning plate 34 upward. When the limiting strip 345 is separated from the clamping groove 371, the driving motor 35 drives the positioning plate 34 to rotate 120°, turning the two cross beams at the bottom upward to facilitate welding of the reinforcing bar 12.

[0061] The implementation principle of the welding process of the flange truss in the second embodiment of the present application is as follows: First, the flange 11 is fixed in the limiting groove 343 of the positioning disk 34 and tightened by the top plate 366. Then, the main beam 1 and the flange 11 are fixed, that is, the main beam 1 and the flange 11 can be fixed together. Next, the main beam 1 and the flange 11 are welded together. Finally, the reinforcing bars 12 between the main beams 1 are welded.

[0062] The above are all the preferred embodiments of the present application. Without restricting the protection scope of the present application based on this, therefore: All equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A flange truss welding positioning tooling, characterized in that: It includes a base (2), and two positioning mechanisms (3) for fixing the flange (11) are arranged on the top of the base (2). A first clamping mechanism (4) and a second clamping mechanism (5) for fixing the main beam (1) are arranged between the positioning mechanisms (3) on the base (2); The positioning mechanism (3) includes a positioning seat (31), a positioning disc (34) is arranged on the positioning seat (31). Three through slots (342) are opened on the opposite side of the positioning disc (34). A limiting slot (343) in the shape of an equilateral triangle is opened on the opposite side of the positioning disc (34). The through slots (342) are located at the three corners of the limiting slot (343). An arc-shaped slot (344) for clamping the flange (11) is opened at the position of the through slot (342) on the positioning disc (34). A positioning component (36) for fixing the flange (11) is arranged in the through slot (342) of the positioning disc (34); The positioning component (36) includes a fixing disc (361) fixed in the through slot (342) of the positioning disc (34). A positioning column (362) is fixed on the side of the fixing disc (361) facing the limiting slot (343). A pressure ring (363) is sleeved on the positioning column (362). Three first connecting rods (364) are evenly hinged on the pressure ring (363) along its circumferential direction. One end of the first connecting rod (364) away from the pressure ring (363) is hinged to a second connecting rod (365). One end of the second connecting rod (365) away from the first connecting rod (364) is hinged to the end of the positioning column (362) away from the fixing disc (361). A top plate (366) is fixed at the hinge joint of the first connecting rod (364) and the second connecting rod (365). The top plate (366) is arranged parallel to the axial direction of the positioning column (362). A pushing cylinder (367) is fixed on the positioning column (362). The cylinder body of the pushing cylinder (367) is fixed on the fixing disc (361), and the end of the piston rod of the pushing cylinder (367) is fixed on the pressure ring (363); A vertically arranged hydraulic cylinder (32) is fixed on the top of the positioning seat (31). The end of the piston rod of the hydraulic cylinder (32) is fixed with a support plate (33). A driving motor (35) is fixed on the top of the support plate (33). The output shaft of the driving motor (35) is fixed to the positioning disc (34). The support plate (33) is provided with a positioning member for fixing the positioning disc (34); A receiving groove (331) is opened on the side of the support plate (33) close to the positioning disc (34). The positioning member includes a positioning spring (332) fixed in the receiving groove (331). One end of the positioning spring (332) is fixed to the inner wall of the receiving groove (331), and the other end is fixed with a limiting post (333). A slot (341) for inserting the limiting post (333) is opened on the positioning disc (34).

2. The flange truss welding positioning tooling according to claim 1, wherein: The bottom of the positioning seat (31) is fixedly provided with a T-shaped slider (311), and the top of the base (2) is provided with a T-shaped chute (21) along its length direction. The T-shaped slider (311) at the bottom of the positioning seat (31) is slidably connected in the T-shaped chute (21) of the base (2). Bolts are threadedly connected to the opposite sides of the positioning seat (31).

3. The flange truss welding positioning tooling according to claim 2, characterized in that: The top of the positioning seat (31) is fixedly provided with a hydraulic cylinder (32). On the side of the cylinder body of the hydraulic cylinder (32) close to the positioning disc (34), a vertically arranged limiting block (37) is fixedly provided. A clamping groove (371) is provided on the side of the limiting block (37) facing the positioning disc (34). Three limiting strips (345) are fixedly provided on the side of the positioning disc (34) away from the limiting groove (343). The limiting strips (345) are evenly arranged along the circumferential direction of the positioning disc (34), and the limiting strips (345) can be clamped in the clamping groove (371).

4. The flange truss welding positioning tooling according to claim 3, characterized in that: The first clamping mechanism (4) includes a plurality of portal frames (41) fixedly provided on the top of the base (2). The portal frames (41) are arranged perpendicular to the sliding direction of the positioning seat (31). Two through holes (42) are provided at the top of the portal frames (41). A screw rod (43) is penetrated in the through holes (42). Nuts are threadedly connected to both sides of the screw rod (43) located in the portal frames (41). An arc-shaped plate (44) is fixedly provided at the top of the screw rod (43), and the arc-shaped plate (44) is used for clamping the main beam (1).

5. The flange truss welding positioning tooling according to claim 4, characterized in that: The second clamping mechanism (5) includes a support rod (51) fixedly provided on the top of one of the support plates (33). A positioning rod (52) is rotatably connected to the top of the support rod (51). One end of the positioning rod (52) is hinged to the top of the support rod (51). A plurality of clamping seats (53) are arranged along the length direction of the positioning rod (52). An arc-shaped clamping plate one (54) is fixedly provided at the bottom of the clamping seat (53). The arc-shaped clamping plate one (54) bends downward. An arc-shaped clamping plate two (55) is hinged to one side of the arc-shaped clamping plate one (54). The free end of the arc-shaped clamping plate two (55) away from the arc-shaped clamping plate one (54) is a free end, and a stud (551) is hinged to the free end of the arc-shaped clamping plate two (55). A notch groove (541) is provided on the side of the arc-shaped clamping plate one (54) away from the hinged end. The bolt can be rotated into the notch groove (541) and is threadedly connected with a nut.

6. A welding process for the flange truss welding positioning tooling described in claim 5, characterized in that: The following steps are included: S1. Fix the flange (11): Clamp the flange (11) in the limiting groove (343) of the positioning disc (34), and then fix the flange (11) and the positioning disc (34). S2. Fix the main beam (1): First, make the two main beams (1) at the bottom be clamped in the arc-shaped plate (44), and make the two ends of the main beam (1) abut against the flange (11). Then, turn over the positioning rod (52) to make the arc-shaped clamping plate one (54) at the bottom of the positioning rod (52) be clamped on the top main beam (1). Rotate the arc-shaped clamping plate two (55) so that the arc-shaped clamping plate one (54) and the arc-shaped clamping plate two (55) jointly surround the outer side wall of the main beam (1). Then, rotate the bolt on the arc-shaped clamping plate two (55) into the notch groove (541) of the arc-shaped clamping plate one (54), and fix the arc-shaped clamping plate one (54) and the arc-shaped clamping plate two (55) through the bolt. S3. Weld the main beam (1) and the flange (11): Manually weld the connection between the flange (11) and the main beam (1) to fix the main beam (1) and the flange (11) together. S4. Weld the reinforcing rod (12): First, weld the reinforcing rod (12) between the two bottom main beams (1) and the top main beam (1). Then, the piston rod of the hydraulic cylinder (32) extends to push the support plate (33) and the positioning plate (34) upward. After the limiting strip (345) disengages from the card slot (371), the drive motor (35) drives the positioning plate (34) to rotate 120°, turning the two bottom cross beams upward to facilitate welding the reinforcing rod (12).

7. The welding process of a flange truss welding positioning tooling according to claim 6, characterized in that: In S1, control the piston rod of the pushing air cylinder (367) to extend, pushing the pressure ring (363) to slide away from the fixed plate (361). The first connecting rod (364) and the second connecting rod (365) push the top plate (366) to move away from the positioning column (362), making the top plate (366) abut against the inner wall of the flange (11).

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