Welding equipment for steel structure box girder top plate

Abstract

The utility model relates to the technical field of box girder welding, in particular to welding equipment for a steel structure box girder top plate, which comprises a clamping mechanism, the clamping mechanism comprises a first U-shaped clamp and a second U-shaped clamp, and the first U-shaped clamp and the second U-shaped clamp are respectively placed on a first to-be-welded plate and a second to-be-welded plate. Through screw holes are formed in the end faces, away from the bottom plate, of the first U-shaped clamps and the second U-shaped clamps, adjusting screw rods are in threaded connection with the interiors of the screw holes, clamping blocks are fixedly connected to the ends, close to the bottom plate, of the adjusting screw rods, adjusting mechanisms are further installed on the multiple first U-shaped clamps, and the adjusting mechanisms are connected with the second U-shaped clamps. A connecting mechanism used for connecting the multiple first U-shaped clamps is jointly installed on the multiple first U-shaped clamps. The welding device has the beneficial effects that the dismounting process after welding is completed is facilitated, and then the probability of damage to the first to-be-welded plate and the second to-be-welded plate and the influence on the quality of the welded box girder are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of box girder welding, in particular to a welding equipment for steel structure box girder top plate. BACKGROUND

[0002] In the welding construction process of the steel box girder, the top plate and the bottom plate of the steel box girder need to be assembled two by two, that is, two pieces of to-be-welded plates are butt-welded two by two, thereby forming the bottom plate or the top plate. However, due to the large size of the steel box girder itself, the butt-welding seam is long, and in the actual welding process, the shrinkage deformation of the first-welded part has a great influence on the welding seam width of the unwelded part, the welding quality is low, and the overall welding precision of the steel box girder is greatly affected.

[0003] A welding structure for steel box girder top plate welding is disclosed in Chinese Patent No. CN212793733U, which comprises first and second to-be-welded plates arranged at intervals, and a butt-welding seam is formed between the first and second to-be-welded plates. A positioning plate is welded on the first to-be-welded plate along its length direction, and a first inclined surface is arranged on the positioning plate along its length direction. A strong magnetic block is magnetically connected to the second to-be-welded plate, and the strong magnetic block is spaced apart along the length direction of the positioning plate. A support is fixedly arranged on the strong magnetic block, and an abutting block is connected to the support through an adjusting device. The abutting block can abut against the first inclined surface on the positioning plate and can move in the vertical direction under the driving of the adjusting device to adjust the position of the first to-be-welded plate, so that the width of the butt-welding seam at different cross sections is equal. However, since the positioning plate is welded on the first to-be-welded plate, it is inconvenient to remove the positioning plate welded on the first to-be-welded plate after the first to-be-welded plate and the second to-be-welded plate are welded, and forcibly removing the positioning plate will damage the first to-be-welded plate, thereby affecting the quality of the welded box girder. SUMMARY

[0004] In order to reduce the damage to the first to-be-welded plate when the positioning plate is removed, the present application provides a welding equipment for steel structure box girder top plate.

[0005] The welding equipment for steel structure box girder top plate provided by the present application adopts the following technical solution:

[0006] The utility model relates to a kind of welding equipment for steel structure box girder roof, including bottom plate, first support plate and second support plate are fixedly connected on the bottom plate, gap is left between the first support plate and the second support plate, first to be welded plate and second to be welded plate are placed respectively on the end face of the first support plate and the second support plate away from the bottom plate, a plurality of clamping mechanisms are installed on the first to be welded plate, the clamping mechanism includes first U-shaped clamp and second U-shaped clamp, the first U-shaped clamp and the second U-shaped clamp are placed on the first to be welded plate and the second to be welded plate respectively, through hole is formed in the end face of the first U-shaped clamp and the second U-shaped clamp away from the bottom plate, adjusting screw is threadedly connected in the through hole, the end of the adjusting screw close to the bottom plate is fixedly connected with clamping block, adjusting mechanism is also installed on a plurality of the first U-shaped clamps, the adjusting mechanism is connected with the second U-shaped clamp, connecting mechanism for connecting a plurality of the first U-shaped clamps is commonly installed on a plurality of the first U-shaped clamps.

[0007] By adopting the above technical scheme, when welding the first to be welded plate and the second to be welded plate, the first to be welded plate and the second to be welded plate are placed on the first support plate and the second support plate respectively, then a plurality of first U-shaped clamps and a plurality of second U-shaped clamps are placed on the first to be welded plate and the second to be welded plate respectively, the adjusting screw is rotated, the adjusting screw drives the clamping block to clamp a plurality of first U-shaped clamps and a plurality of second U-shaped clamps on the first to be welded plate and the second to be welded plate respectively, then a plurality of first U-shaped clamps are connected together through the connecting mechanism, finally, the adjusting mechanism is adjusted according to the welding requirement, so that the distance between the first to be welded plate and the second to be welded plate meets the welding requirement, and the first U-shaped clamps and the second U-shaped clamps are detachably connected with the first to be welded plate and the second to be welded plate, which facilitates the dismounting process after welding, and reduces the probability of damage to the first to be welded plate and the second to be welded plate and the influence on the quality of the box girder after welding.

[0008] Optionally, the connecting mechanism includes a plurality of connecting blocks, the plurality of connecting blocks are fixedly connected on the side wall of a plurality of the first U-shaped clamps away from the second U-shaped clamps, a plurality of the connecting blocks are provided with a plurality of through communication grooves on the side wall close to each other, and a connecting rod is inserted into the plurality of communication grooves; the end face of the two connecting blocks close to the end portion away from the bottom plate is provided with a first limiting groove in communication with the communication groove, the end face of the connecting rod away from the bottom plate is provided with two second limiting grooves, and the connecting mechanism further includes two limiting rods, the two limiting rods are inserted into the two second limiting grooves through the two first limiting grooves.

[0009] By adopting the above technical scheme, the connecting block and the connecting rod are arranged so that a plurality of first U-shaped blocks are located on the same straight line, thereby realizing that the gap between the first to be welded plate and the second to be welded plate is equal at each position, and improving the welding precision.

[0010] Optionally, the adjusting mechanism comprises a first vertical rod fixedly connected to the end surface of the first U-shaped clamp away from the bottom plate, and a second vertical rod fixedly connected to the end surface of the second U-shaped clamp away from the bottom plate, the first vertical rod and the second vertical rod being symmetrically arranged, a fixed rod and a first sliding rod being fixedly connected to the first vertical rod and the second vertical rod respectively, a first sliding groove being formed in the end surface of the fixed rod close to the second vertical rod along the length direction, and the first sliding rod being slidably connected to the first sliding groove at the end away from the second vertical rod; and the fixed rod is provided with a locking assembly for locking the first sliding rod.

[0011] By adopting the above technical scheme, when the gap between the first and second plates to be welded is adjusted, the locking assembly drives the first sliding rod to slide, the first sliding rod drives the second plate to be welded to move through the second vertical rod, and the first sliding rod is locked by the locking assembly when the gap between the first and second plates to be welded reaches the requirement; thus, the whole device can weld plates to be welded with different gap requirements, and the applicability of the whole device is improved.

[0012] Optionally, a second sliding groove is formed in the end surface of the fixed rod away from the bottom plate along the length direction, the second sliding groove is communicated with the first sliding groove, the locking assembly comprises a mounting plate fixedly connected to the side wall of the fixed rod, a first motor fixedly connected to the mounting plate, a gear fixedly connected to the output shaft of the first motor, a first rack slidably connected to the second sliding groove, the first rack being fixedly connected to the first sliding rod, and the first rack being engaged with the gear.

[0013] By adopting the above technical scheme, when the first sliding rod is slid and locked, the first motor is started, the first motor drives the gear to rotate through the rotating shaft, the gear drives the first rack to slide, and the first rack drives the first sliding rod to slide, and at the same time, the first motor is stopped when the first sliding rod slides to the appropriate position, so as to realize the locking of the first sliding rod.

[0014] Optionally, the locking assembly comprises a connecting lug fixedly connected to the side wall of the fixed rod, a third sliding groove penetrating through the end surface of the connecting lug away from the bottom plate, a second sliding rod slidably connected to the third sliding groove, a connecting plate fixedly connected to the end of the second sliding rod away from the bottom plate, a limiting tooth block fixedly connected to the end surface of the connecting plate close to the bottom plate, a fourth sliding groove formed in the end surface of the fixed rod away from the bottom plate along the length direction, and a second rack slidably connected to the fourth sliding groove, the second rack being fixedly connected to the first sliding rod.

[0015] By adopting the technical scheme, when sliding and locking the first sliding rod, the first sliding rod is manually slid, when the first sliding rod is slid to a specified position, the second sliding rod is manually pulled down, the second sliding rod drives the limiting tooth block to be inserted into the tooth gap of the second rack through the connecting plate, and the limiting of the first sliding rod is realized.

[0016] Optionally, the bottom plate is further provided with a lifting support mechanism, the lifting support mechanism comprises a plurality of lifting support plates and a plurality of driving assemblies, and the plurality of lifting support plates are respectively arranged on the bottom plate through the plurality of driving assemblies.

[0017] By adopting the technical scheme, the lifting support plates are arranged to support the first and second to-be-welded plates with different widths, and the applicability of the whole device is further improved.

[0018] Optionally, a mounting groove is formed in the side wall of the bottom plate, a plurality of fifth sliding grooves are formed in the end face of the bottom plate close to the first support plate, a rotating groove in communication with the mounting groove is formed in the bottom wall of the fifth sliding groove, and an annular limiting groove is formed in the side wall of the rotating groove; the driving assembly comprises a second motor, the second motor is fixedly connected to the side wall of the bottom plate provided with the mounting groove, a driving shaft is fixedly connected to the output shaft of the second motor, a plurality of first bevel gears are fixedly connected to the driving shaft, the plurality of first bevel gears are located in the mounting groove, a plurality of sliding blocks are slidably connected in the plurality of fifth sliding grooves, the plurality of sliding blocks are fixedly connected to the lifting support plates, a lead screw is rotatably connected in the rotating groove, a limiting ring is rotatably connected in the annular limiting groove, the lead screw is fixedly connected to the limiting ring, the lead screw is threadedly connected to the sliding block, and a second bevel gear is fixedly connected to one end of the lead screw located in the mounting groove, and the second bevel gear is engaged with the first bevel gear.

[0019] By adopting the technical scheme, when the first and second to-be-welded plates with a larger width are supported, the second motor is started, the second motor drives the driving shaft to rotate, the driving shaft drives the plurality of first bevel gears to rotate, the plurality of first bevel gears drive the plurality of second bevel gears to rotate, the second bevel gears drive the lead screw to rotate, the lead screw drives the sliding block to slide, and the sliding block drives the lifting support plates to rise to the same horizontal position as the first support plate, thereby supporting the first and second to-be-welded plates.

[0020] In summary, the present application has the following beneficial technical effects:

[0021] 1. The arrangement of the first and second U-shaped clamps realizes detachable connection with the first and second to-be-welded plates, thereby facilitating the dismounting process after welding, and reducing the probability of damage to the first and second to-be-welded plates and the influence on the quality of the box girder after welding;

[0022] 2. The arrangement of the connecting blocks and the connecting rods is such that the first U-shaped rows of blocks are located on the same straight line, thereby achieving that the gap between the first and the second to-be-welded plates is equal at each position, thereby improving the welding precision;

[0023] 3. When adjusting the gap between the first and the second to-be-welded plates, the locking assembly drives the first sliding rod to slide, the first sliding rod drives the second to-be-welded plate to move through the second vertical rod, and when the gap between the first and the second to-be-welded plates reaches the requirement, the locking assembly locks the first sliding rod; thereby making the whole device can weld to-be-welded plates with different gap requirements, improving the applicability of the whole device;

[0024] 4. When supporting the wider first and second to-be-welded plates, the second motor is started, the second motor drives the driving shaft to rotate, the driving shaft drives the plurality of first bevel gears to rotate, the plurality of first bevel gears drive the plurality of second bevel gears to rotate, the second bevel gears drive the lead screws to rotate, the lead screws drive the sliding blocks to slide, the sliding blocks drive the lifting support plates to rise to the same horizontal position as the first support plates, thereby supporting the first and second to-be-welded plates. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of a welding device for a steel structure box beam top plate in Embodiment 1 of the present application;

[0026] Figure 2 FIG. 2 is a structural schematic diagram of a clamping mechanism in Embodiment 1 of the present application;

[0027] Figure 3 FIG. 3 is a structural schematic diagram of an adjusting mechanism in Embodiment 1 of the present application;

[0028] Figure 4 FIG. 4 is an enlarged view of part A in the present application; Figure 3

[0029] Figure 5 FIG. 5 is a sectional view of a lifting support mechanism in Embodiment 1 of the present application;

[0030] Figure 6 FIG. 6 is an enlarged view of part B in the present application; Figure 5

[0031] Figure 7 FIG. 7 is a structural schematic diagram of a locking assembly in Embodiment 2 of the present application.

[0032] ​​: 1, first to be welded plate; 2, second to be welded plate; 3, bottom plate; 31, first support plate; 32, second support plate; 33, mounting groove; 34, fifth sliding groove; 35, rotating groove; 36, annular limiting groove; 4, clamping mechanism; 41, first U-shaped clamp; 411, screw hole; 42, second U-shaped clamp; 43, adjusting screw; 44, clamping block; 5, connecting mechanism; 51, connecting block; 511, communication groove; 512, first limiting groove; 52, connecting rod; 53, limiting rod; 6, adjusting mechanism; 61, first vertical rod; 62, second vertical rod; 63, fixed rod; 631, first sliding groove; 632, second sliding groove; 633, fourth sliding groove; 64, first sliding rod; 65, locking assembly; 651, mounting plate; 652, first motor; 653, gear; 654, first rack; 655, connecting lug; 656, second sliding rod; 657, connecting plate; 658, limiting tooth block; 659, second rack; 66, third sliding groove; 7, lifting support mechanism; 71, lifting support plate; 72, driving assembly; 721, second motor; 722, drive shaft; 723, first bevel gear; 724, second bevel gear; 725, lead screw; 726, limiting ring; 727, sliding block. DETAILED DESCRIPTION

[0033] The following will be described in detail with reference to the accompanying drawings. Figures 1-7 The application is further described in detail.

[0034] The embodiment of the application discloses a welding equipment for steel structure box girder top plate.

[0035] Embodiment 1:

[0036] Reference Figure 1 The welding equipment for steel structure box girder top plate comprises a bottom plate 3 placed on the ground, a first support plate 31 and a second support plate 32 fixedly connected to the end face of the bottom plate 3 away from the ground, a gap left between the first support plate 31 and the second support plate 32, a first to-be-welded plate 1 placed on the end face of the first support plate 31 away from the bottom plate 3, a second to-be-welded plate 2 placed on the end face of the second support plate 32 away from the bottom plate 3, a plurality of clamping mechanisms 4 for fixing the first to-be-welded plate 1 and the second to-be-welded plate 2 installed on a first mounting plate 651, a connecting mechanism 5 for connecting the clamping mechanisms 4 and an adjusting mechanism 6 for adjusting the weld width installed on the clamping mechanisms 4, and a lifting support mechanism 7 for supporting the first to-be-welded plate 1 and the second to-be-welded plate 2 with different widths installed on the bottom plate 3.

[0037] When the welding of the steel structure box girder roof is carried out, first, the lifting supporting mechanism 7 supports the first and second to-be-welded plates 1 and 2 according to the width of the first and second to-be-welded plates 1 and 2, and then the adjusting mechanism 6 is adjusted according to the width of the weld, at this time, the clamping mechanism 4 is used to clamp and fix the first and second to-be-welded plates 1 and 2, and at the same time, the connecting mechanism 5 is used to connect multiple clamping mechanisms 4 to one piece, so that the width of the weld is kept consistent, thereby improving the welding precision.

[0038] Reference Figure 2 The clamping mechanism 4 comprises a first U-shaped clamp 41 and a second U-shaped clamp 42, and the first U-shaped clamp 41 and the second U-shaped clamp 42 are respectively placed on the first to-be-welded plate 1 and the second to-be-welded plate 2. The end face of the first U-shaped clamp 41 and the second U-shaped clamp 42 away from the bottom plate 3 is provided with a through screw hole 411, and the screw hole 411 is threadedly connected with an adjusting screw 43. The end of the adjusting screw 43 close to the bottom plate 3 is fixedly connected with a clamping block 44.

[0039] When the first and second to-be-welded plates 1 and 2 are fixed, multiple first U-shaped clamps 41 and multiple second U-shaped clamps 42 are placed on the first and second to-be-welded plates 1 and 2 respectively, and then the adjusting screw 43 is rotated, the adjusting screw 43 drives the clamping block 44 to make multiple first U-shaped clamps 41 and multiple second U-shaped clamps 42 clamp on the first and second to-be-welded plates 1 and 2 respectively, thereby realizing the detachable connection between the first and second U-shaped clamps 41 and 42 and the first and second to-be-welded plates 1 and 2, facilitating the disassembly process after welding, thereby reducing the probability of damage to the first and second to-be-welded plates 1 and 2 and the influence on the quality of the box girder after welding.

[0040] Reference Figure 2 The connecting mechanism 5 comprises multiple connecting blocks 51, and the multiple connecting blocks 51 are fixedly connected to the side walls of the multiple first U-shaped clamps 41 away from the second U-shaped clamps 42. The end faces of the multiple connecting blocks 51 close to each other are provided with a through communication groove 511, and the multiple communication grooves 511 are commonly inserted with a connecting rod 52. The end face of the connecting block 51 away from the bottom plate 3 is provided with a first limiting groove 512 in communication with the communication groove 511, and the end face of the connecting rod 52 away from the bottom plate 3 is provided with two second limiting grooves. The connecting mechanism 5 further comprises two limiting rods 53, and the two limiting rods 53 are respectively inserted into the two second limiting grooves through the two first limiting grooves 512.

[0041] Reference Figure 3 And Figure 4The adjusting mechanism 6 comprises a first vertical rod 61 and a second vertical rod 62, the first vertical rod 61 and the second vertical rod 62 are fixedly connected to the end faces of the first U-shaped clamp 41 and the second U-shaped clamp 42 away from the bottom plate 3 respectively, the end faces of the first vertical rod 61 and the second vertical rod 62 close to each other are fixedly connected with a fixing rod 63 and a first sliding rod 64 respectively, the first sliding groove 631 is formed in the length direction on the side wall of the fixing rod 63 close to the second vertical rod 62, one end of the first sliding rod 64 close to the first vertical rod 61 is slidingly connected in the first sliding groove 631, and the fixing rod 63 is further provided with a locking assembly 65 for locking the first sliding rod 64; when the distance between the first to-be-welded plate 1 and the second to-be-welded plate 2 is adjusted, the locking assembly 65 drives the first sliding rod 64 to slide, the first sliding rod 64 drives the second to-be-welded plate 2 to move through the second vertical rod 62, and when the gap between the first to-be-welded plate 1 and the second to-be-welded plate 2 reaches the requirement, the locking assembly 65 locks the first sliding rod 64; and then the whole device can weld to-be-welded plates with different gap requirements, and the applicability of the whole device is improved.

[0042] The end face of the fixing rod 63 away from the bottom plate 3 is provided with a second sliding groove 632 in the length direction and in communication with the first sliding groove 631, the locking assembly 65 comprises a mounting plate 651 fixedly connected to the side wall of the fixing rod 63, the mounting plate 651 is fixedly connected with a first motor 652, the output shaft of the first motor 652 is fixedly connected with a gear 653, the second sliding groove 632 is slidingly connected with a first rack 654, the first rack 654 is fixedly connected with the first sliding rod 64, and the first rack 654 is engaged with the gear 653.

[0043] When the first sliding rod 64 is sliding and locked, the first motor 652 is started, the first motor 652 drives the gear 653 to rotate through the rotating shaft, the gear 653 drives the first rack 654 to slide, the first rack 654 drives the first sliding rod 64 to slide, and at the same time, when the first sliding rod 64 slides to the appropriate position, the first motor 652 is stopped, and then the locking of the first sliding rod 64 is realized

[0044] Reference Figure 5 and Figure 6The lifting support mechanism 7 comprises a plurality of lifting support plates 71 and a plurality of drive assemblies 72, the plurality of lifting support plates 71 are respectively slidably arranged on the bottom plate 3 through the plurality of drive assemblies 72; a plurality of mounting grooves 33 are arranged on the side wall of the bottom plate 3, a plurality of fifth sliding grooves 34 are arranged on the end face of the bottom plate 3 close to the first support plate 31, a rotating groove 35 in communication with the mounting groove 33 is arranged on the bottom wall of the fifth sliding groove 34, and an annular limiting groove 36 is arranged on the side wall of the rotating groove 35; the drive assembly 72 comprises a second motor 721, the second motor 721 is fixedly connected to the side wall of the bottom plate 3 where the mounting groove 33 is arranged, a drive shaft 722 is fixedly connected to the output shaft of the second motor 721, a plurality of first bevel gears 723 are fixedly connected to the drive shaft 722, the plurality of first bevel gears 723 are located in the mounting groove 33, a sliding block 727 is slidably connected in the fifth sliding groove 34, the plurality of sliding blocks 727 are fixedly connected with the lifting support plate 71, a lead screw 725 is rotatably connected in the rotating groove 35, a limiting ring 726 is rotatably connected in the annular limiting groove 36, the lead screw 725 is fixedly connected with the limiting ring 726, the lead screw 725 is threadedly connected with the sliding block 727, and a second bevel gear 724 is fixedly connected to one end of the lead screw 725 located in the mounting groove 33.

[0045] When supporting the first and second to-be-welded plates 1 and 2 which are relatively wide, the second motor 721 is started, the second motor 721 drives the drive shaft 722 to rotate, the drive shaft 722 drives the plurality of first bevel gears 723 to rotate, the plurality of first bevel gears 723 respectively drive the plurality of second bevel gears 724 to rotate, the second bevel gears 724 drive the lead screw 725 to rotate, the lead screw 725 drives the sliding block 727 to slide, and the sliding block 727 drives the lifting support plate 71 to rise to the same horizontal position as the first support plate 31, thereby supporting the first and second to-be-welded plates 1 and 2

[0046] The implementation principle of the embodiment 1 of the application is as follows: when welding the top plate of the steel structure box girder, the corresponding second motor 721 is started according to the width of the first to-be-welded plate 1 and the second to-be-welded plate 2, so that the corresponding lifting support plate 71 supports the first to-be-welded plate 1 and the second to-be-welded plate 2, then the plurality of first U-shaped clamps 41 and the plurality of second U-shaped clamps 42 are respectively placed on the first to-be-welded plate 1 and the second to-be-welded plate 2, then the adjusting screw 43 is rotated, the adjusting screw 43 drives the clamping block 44 to make the plurality of first U-shaped clamps 41 and the plurality of second U-shaped clamps 42 respectively clamped on the first to-be-welded plate 1 and the second to-be-welded plate 2; then the connecting rod 52 is sequentially inserted through the plurality of communication grooves 511, and then the limiting rod 53 is inserted through the first limiting groove 512 and inserted into the second limiting groove; finally, the first motor 652 is started according to the width of the weld, the first motor 652 drives the first sliding rod 64 to slide through the gear 653 and the first rack 654, and at the same time, the first motor 652 stops locking the first sliding rod 64 when it moves to the appropriate position; thereby facilitating the disassembly process after welding, reducing the probability of damage to the first to-be-welded plate 1 and the second to-be-welded plate 2 and the influence of the quality of the box girder after welding.

[0047] Embodiment 2

[0048] Reference Figure 7 The difference between the embodiment and the embodiment 1 is that the locking assembly 65 comprises a connecting lug 655 fixedly connected to the side wall of the fixed rod 63, a third sliding groove 66 penetrating through the end face of the connecting lug 655 away from the bottom plate 3, a second sliding rod 656 slidingly connected in the third sliding groove 66, a connecting plate 657 fixedly connected to the end of the second sliding rod 656 away from the bottom plate 3, a limiting tooth block 658 fixedly connected to the end face of the connecting plate 657 close to the bottom plate 3, a fourth sliding groove 633 opened along the length direction on the end face of the fixed rod 63 away from the bottom plate 3, and a second rack 659 slidingly connected in the fourth sliding groove 633, wherein the second rack 659 is fixedly connected with the first sliding rod 64.

[0049] When the first sliding rod 64 is sliding and locking, the first sliding rod 64 is manually slid, and when the first sliding rod 64 slides to the specified position, the second sliding rod 656 is manually pulled down, the second sliding rod 656 drives the limiting tooth block 658 to be inserted into the tooth gap of the second rack 659 through the connecting plate 657, so as to limit the first sliding rod 64.

[0050] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made on the structure, shape and principle of the application shall be covered within the protection scope of the application.

Claims

1. A welding device for the top plate of a steel structure box girder, comprising a base plate (3), wherein a first support plate (31) and a second support plate (32) are fixedly connected to the base plate (3), a gap is left between the first support plate (31) and the second support plate (32), and a first plate to be welded (1) and a second plate to be welded (2) are respectively placed on the end faces of the first support plate (31) and the second support plate (32) away from the base plate (3), characterized in that, It also includes a clamping mechanism (4), which includes a first U-shaped clamp (41) and a second U-shaped clamp (42). The first U-shaped clamp (41) and the second U-shaped clamp (42) are respectively placed on the first plate to be welded (1) and the second plate to be welded (2). The first U-shaped clamp (41) and the second U-shaped clamp (42) are provided with through screw holes (411) on the end face away from the base plate (3). An adjusting screw (43) is threaded into the screw hole (411). A clamping block (44) is fixedly connected to one end of the adjusting screw (43) near the base plate (3). An adjusting mechanism (6) is also installed on each of the first U-shaped clamps (41). The adjusting mechanism (6) is connected to the second U-shaped clamp (42). A connecting mechanism (5) for connecting the multiple first U-shaped clamps (41) is installed on the multiple first U-shaped clamps (41).

2. The welding equipment for the top plate of a steel structure box girder according to claim 1, characterized in that, The connecting mechanism (5) includes multiple connecting blocks (51), which are fixedly connected to the side walls of multiple first U-shaped clamps (41) away from the second U-shaped clamps (42). A through-through communication groove (511) is provided on the side walls of the multiple connecting blocks (51) that are close to each other. A connecting rod (52) is inserted into the multiple communication grooves (511). A first limiting groove (512) communicating with the communication groove (511) is provided on the end face of the two connecting blocks (51) near the end away from the base plate (3). Two second limiting grooves are provided on the end face of the connecting rod (52) away from the base plate (3). The connecting mechanism (5) also includes two limiting rods (53), which pass through the two first limiting grooves (512) and are inserted into the two second limiting grooves.

3. The welding equipment for the top plate of a steel structure box girder according to claim 1, characterized in that, The adjustment mechanism (6) includes a first upright (61), which is fixedly connected to the end face of the first U-shaped clamp (41) away from the base plate (3). A second upright (62) is fixedly connected to the end face of the second U-shaped clamp (42) away from the base plate (3). A fixed rod (63) and a first sliding rod (64) are fixedly connected to the first upright (61) and the second upright (62) respectively. A first sliding groove (631) is opened along the length direction on the end face of the fixed rod (63) near the second upright (62). The end of the first sliding rod (64) away from the second upright (62) is slidably connected in the first sliding groove (631). A locking component (65) for locking the first sliding rod (64) is installed on the fixed rod (63).

4. The welding equipment for the top plate of a steel structure box girder according to claim 3, characterized in that, The fixed rod (63) has a second sliding groove (632) along its length on the end face away from the base plate (3). The second sliding groove (632) communicates with the first sliding groove (631). The locking assembly (65) includes a mounting plate (651). The mounting plate (651) is fixedly connected to the side wall of the fixed rod (63). A first motor (652) is fixedly connected to the mounting plate (651). A gear (653) is fixedly connected to the output shaft of the first motor (652). A first rack (654) is slidably connected in the second sliding groove (632). The first rack (654) is fixedly connected to the first sliding rod (64). The first rack (654) meshes with the gear (653).

5. The welding equipment for the top plate of a steel structure box girder according to claim 3, characterized in that, The locking assembly (65) includes a connecting ear (655), which is fixedly connected to the side wall of the fixing rod (63). A third sliding groove (66) is provided on the end face of the connecting ear (655) away from the base plate (3). A second sliding rod (656) is slidably connected in the third sliding groove (66). A connecting plate (657) is fixedly connected to the end of the second sliding rod (656) away from the base plate (3). A limit tooth block (658) is fixedly connected to the end face of the connecting plate (657) near the base plate (3). A fourth sliding groove (633) is provided along the length direction on the end face of the fixing rod (63) away from the base plate (3). A second rack (659) is slidably connected in the fourth sliding groove (633). The second rack (659) is fixedly connected to the first sliding rod (64).

6. The welding equipment for the top plate of a steel structure box girder according to claim 1, characterized in that, The base plate (3) is also equipped with a lifting support mechanism (7), which includes multiple lifting support plates (71) and multiple drive components (72). The multiple lifting support plates (71) are slidably mounted on the base plate (3) through the multiple drive components (72).

7. The welding equipment for the top plate of a steel structure box girder according to claim 6, characterized in that, The base plate (3) has an installation groove (33) on its side wall. Multiple fifth sliding grooves (34) are provided on the end face of the base plate (3) near the first support plate (31). A rotating groove (35) communicating with the installation groove (33) is provided on the bottom wall of the fifth sliding groove (34). An annular limiting groove (36) is provided on the side wall of the rotating groove (35). The drive assembly (72) includes a second motor (721). The second motor (721) is fixedly connected to the side wall of the base plate (3) where the installation groove (33) is located. A drive shaft (722) is fixedly connected to the output shaft of the second motor (721). Multiple first bevel gears (723) are fixedly connected to the drive shaft (722). The first bevel gear (723) is located in the mounting groove (33). A slider (727) is slidably connected in each of the fifth sliding grooves (34). The sliders (727) are fixedly connected to the lifting support plate (71). A lead screw (725) is rotatably connected in the rotating groove (35). A limit ring (726) is rotatably connected in the annular limit groove (36). The lead screw (725) is fixedly connected to the limit ring (726). The lead screw (725) is threadedly connected to the slider (727). A second bevel gear (724) is fixedly connected to one end of the lead screw (725) located in the mounting groove (33). The second bevel gear (724) meshes with the first bevel gear (723).

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