CN112317921B - Auxiliary straightening device used during welding of H-shaped steel and application method thereof - Google Patents
Auxiliary straightening device used during welding of H-shaped steel and application method thereof Download PDFInfo
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- CN112317921B CN112317921B CN202011129039.5A CN202011129039A CN112317921B CN 112317921 B CN112317921 B CN 112317921B CN 202011129039 A CN202011129039 A CN 202011129039A CN 112317921 B CN112317921 B CN 112317921B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 112
- 239000010959 steel Substances 0.000 title claims abstract description 112
- 238000003466 welding Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 80
- 230000007246 mechanism Effects 0.000 claims abstract description 75
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 21
- 238000005056 compaction Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to an auxiliary straightening device used in H-shaped steel welding and a use method thereof, wherein the device comprises a supporting seat, a top compressing mechanism, a two-way compressing mechanism, an arc striking traction plate and a traction mechanism; the H-shaped steel is arranged on a bottom plate of the supporting seat, a plurality of groups of top pressing mechanisms are arranged at the top of the supporting seat, and top pressing rollers in the top pressing mechanisms are pressed on the top of the upper flange plate of the H-shaped steel; a plurality of groups of bidirectional pressing mechanisms are arranged in the supporting seat; 2 cylinder rods of a bidirectional hydraulic cylinder in the bidirectional pressing mechanism respectively vertically extend upwards and downwards, the upwards extending cylinder rods are connected with an upper pressing roller, and the upper pressing roller is pressed on the bottom of an upper flange plate of the H-shaped steel; the cylinder rod which extends downwards is connected with a lower pressing roller, and the lower pressing roller is pressed on the top of the lower flange plate of the H-shaped steel; an arc striking traction plate is arranged at one end of the H-shaped steel, and the arc striking traction plate is connected with a traction mechanism through a traction rope. The invention can effectively reduce the welding deformation of the H-shaped steel, reduce the difficulty of the subsequent correction process and improve the forming quality of the H-shaped steel.
Description
Technical Field
The invention relates to the technical field of welding, in particular to an auxiliary straightening device for H-shaped steel welding and a using method thereof.
Background
The welding H-shaped steel is named because the welding process is adopted to manufacture the welding H-shaped steel and the cross section is H-shaped, and the welding H-shaped steel is divided into submerged arc welding H-shaped steel and high frequency welding H-shaped steel. The process of submerged arc welding H-shaped steel comprises the following steps: the method comprises the steps of steel plate automatic strip separation, assembly, automatic submerged arc welding, flaw detection, flange correction, web correction, end face processing, sand blasting and rust removal and paint spraying.
After the H-shaped steel is assembled and spot welded fixedly, the H-shaped steel is fixed when being welded through automatic submerged arc welding, the automatic submerged arc welding machine is used for welding while running along a trolley track paved in advance through a running trolley, deformation is inevitably generated on the H-shaped steel due to overlarge local heating in the welding process, and the H-shaped steel is usually corrected in a subsequent process. The correction is also called straightening, and the main function of the correction is to eliminate the defects of residual stress, up-down bending, side bending, torsion and the like existing in the welding H-shaped steel and ensure that the inclination of the flange is within a specified range. Deformation is a permanent change in shape and size of the metal caused by expansion and contraction, welding deformation is caused by residues generated by unbalanced heating, and if the welding deformation is large, the subsequent correction process is adversely affected, and the correction difficulty is increased. And in the welding process, the restraint device is used for pressing the workpiece, so that the welding joint is kept at a proper position all the time until the weld metal is cooled, and the welding deformation can be effectively reduced.
Disclosure of Invention
The invention provides an auxiliary straightening device for welding H-shaped steel and a use method thereof, wherein the auxiliary straightening device can effectively reduce welding deformation of the H-shaped steel, reduce the difficulty of a subsequent correction process and improve the forming quality of the H-shaped steel.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
an auxiliary straightening device for H-shaped steel during welding comprises a supporting seat, a top pressing mechanism, a two-way pressing mechanism, an arc striking traction plate and a traction mechanism; the supporting seat is a semi-enclosed frame structure with a top, a bottom and one side closed and the other side open; the H-shaped steel is arranged on the bottom plate of the supporting seat during welding, and the lower flange plate is attached to the bottom plate of the supporting seat; the top plate of the supporting seat is higher than the upper flange plate of the H-shaped steel, a plurality of groups of top pressing mechanisms are longitudinally arranged at the top of the supporting seat along the H-shaped steel, top pressing rollers capable of adjusting the height are arranged in the top pressing mechanisms, and the top pressing rollers are pressed on the top of the upper flange plate of the H-shaped steel; two sides of the corresponding H-shaped steel web plate in the supporting seat are respectively provided with a plurality of groups of bidirectional pressing mechanisms along the longitudinal direction of the H-shaped steel; the bidirectional pressing mechanism is internally provided with a bidirectional hydraulic cylinder, a cylinder body of the bidirectional hydraulic cylinder is fixedly connected with the supporting seat, 2 cylinder rods of the bidirectional hydraulic cylinder respectively vertically extend upwards and downwards, the upwards extending cylinder rods are connected with an upper pressing roller, and the upper pressing roller is pressed on the bottom of the upper flange plate of the H-shaped steel; the cylinder rod which extends downwards is connected with a lower pressing roller, and the lower pressing roller is pressed on the top of the lower flange plate of the H-shaped steel; an arc striking traction plate is arranged at one end of the H-shaped steel, the arc striking traction plate is connected with a traction mechanism through a traction rope, and under the action of the traction mechanism, the arc striking traction plate pulls the H-shaped steel to move horizontally along the longitudinal direction; the welding gun is arranged outside the open side of the supporting seat, at least 3 groups of top pressing mechanisms and 3 groups of two-way pressing mechanisms are arranged between the welding gun and the traction mechanism, and the top pressing mechanisms and the two-way pressing mechanisms are arranged in one-to-one correspondence.
The supporting seat is of a split structure split along a horizontal plane from the middle part and consists of an upper supporting seat frame, a lower supporting seat frame and a connecting piece; the outer sides of the connecting parts of the upper supporting seat frame and the lower supporting seat frame are respectively provided with an outer connecting plate, and the 2 outer connecting plates are fixedly connected through connecting pieces; the inner sides of the connecting parts of the upper supporting seat frame and the lower supporting seat frame are respectively provided with an inner connecting plate, 2 inner connecting plates are arranged at intervals, 2 inner connecting plates are fixedly connected through connecting pieces, and distance sleeves are arranged on the outer sides of the connecting pieces between the 2 inner connecting plates.
The inner connecting plates and the outer connecting plates are longitudinally and continuously arranged along the supporting seat, and the inner connecting plates and the outer connecting plates are fixedly connected through a plurality of connecting pieces which are longitudinally and uniformly arranged along the supporting seat.
The top compressing mechanism consists of 2 telescopic adjusting devices, 2 top bearing seats and top compressing rollers, wherein the 2 telescopic adjusting devices correspond to two sides of the upper flange plate of the H-shaped steel, adjusting rods capable of being longitudinally and telescopically adjusted are arranged in the telescopic adjusting devices, and the adjusting rods penetrate through the top plate of the supporting seat and are connected with the top bearing seats; the top bearing pedestal is connected with the top pinch roller through a bearing.
The number of the top pressing rollers is 1 to more, and the plurality of the top pressing rollers are uniformly arranged along the longitudinal direction of the H-shaped steel; the telescopic adjusting device is an electric synchronous hydraulic jack.
The bidirectional pressing mechanism consists of a bidirectional hydraulic cylinder, an upper bearing seat, an upper pressing roller, a lower bearing seat and a lower pressing roller; the cylinder rod of the bidirectional hydraulic cylinder which extends upwards is connected with an upper bearing seat, and the upper bearing seat is connected with an upper pinch roller through a bearing; the cylinder rod of the bidirectional hydraulic cylinder which extends downwards is connected with a lower bearing seat, and the lower bearing seat is connected with a lower compaction roller through a bearing.
The bidirectional hydraulic cylinder is fixedly connected with the bottom plate of the supporting seat through the hydraulic cylinder fixing seat.
The upper compression rollers and the lower compression rollers are 1 to more, and the upper compression rollers or the lower compression rollers are uniformly arranged along the longitudinal direction of the H-shaped steel.
And the bottom of the top plate of the supporting seat is respectively provided with a distance measuring sensor at the positions right above the edges of the two sides of the upper flange plate of the corresponding H-shaped steel.
The traction mechanism consists of a motor, a speed reducer and a winding drum which are sequentially connected, and the traction rope is a steel wire rope and is wound on the winding drum.
The application method of the auxiliary straightening device for welding the H-shaped steel comprises the following steps:
the support seat is fixed on the ground or a workbench, H-shaped steel after assembly and spot welding fixation is arranged in the support seat, and a web plate at one end of the H-shaped steel is welded and fixed with an arc striking traction plate; a welding gun of the automatic submerged arc welding machine is arranged at one side of the opening of the supporting seat; the H-shaped steel is integrally compressed and welded through the cooperation of the top compression mechanism and the two-way compression mechanism; in the welding process, the welding gun is motionless, and the traction mechanism is matched with the arc striking traction plate through the traction rope, so that the H-shaped steel moves horizontally and uniformly along the longitudinal direction, and the connection welding is realized; the welding joint position is unchanged in the welding process and after welding is ensured through compaction, and meanwhile, the upper flange plate of the H-shaped steel is straightened through the combined action of the top compaction roller and the upper compaction roller, and the lower flange plate of the H-shaped steel is straightened through the combined action of the lower compaction roller and the bottom plate of the supporting seat, so that the welding deformation of the H-shaped steel is finally avoided or reduced.
Compared with the prior art, the invention has the beneficial effects that:
1) The welded H-shaped steel is restrained by arranging the top compression mechanism and the two-way compression mechanism, so that a welded joint is always at a proper position until weld metal is cooled, and the welding deformation is effectively reduced;
2) The supporting seat adopts a split structure, and the internal height of the supporting seat can be adjusted by additionally arranging cushion blocks, so that the supporting seat is suitable for H-shaped steel with various types and specifications;
3) The arc striking traction plate has the functions of an arc striking plate and a traction plate;
4) The top pressing mechanism adopts an electric synchronous hydraulic jack as a telescopic adjusting device for adjusting the height of the top pressing roller, so that the synchronism is strong, and the operation is simple;
5) The bidirectional pressing mechanism adopts a bidirectional hydraulic cylinder to drive the upper pressing roller and the lower pressing roller simultaneously, so that the upper and lower flange plates of the H-shaped steel are always in a pressing state.
Drawings
FIG. 1 is a front view of an auxiliary straightener for H-section welding according to the present invention.
Fig. 2 is A-A view of fig. 1.
In the figure: 1. motor 2, speed reducer 3, reel 4, traction rope 5, arc striking traction plate 6.H, section steel 7, distance measuring sensor 8, support seat 9, telescopic regulator 10, top bearing seat 11, top pinch roller 12, upper pinch roller 13, upper bearing seat 14, bidirectional hydraulic cylinder 15, lower bearing seat 16, lower pinch roller 17, protective cover 18, welding gun 19, outer connecting plate 20, inner connecting plate 21, distance sleeve 22, hydraulic cylinder fixing seat 23, temporary support
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1 and 2, the auxiliary straightening device for welding the H-shaped steel comprises a supporting seat 8, a top pressing mechanism, a two-way pressing mechanism, an arc striking traction plate 5 and a traction mechanism; the supporting seat 8 is a semi-enclosed frame structure with a top, a bottom and one side closed and the other side open; the H-shaped steel 6 is arranged on the bottom plate of the supporting seat 8 during welding, and the lower flange plate is attached to the bottom plate of the supporting seat 8; the top plate of the supporting seat 8 is higher than the upper flange plate of the H-shaped steel 6, a plurality of groups of top pressing mechanisms are longitudinally arranged at the top of the supporting seat 8 along the H-shaped steel 6, top pressing rollers 11 capable of adjusting the height are arranged in the top pressing mechanisms, and the top pressing rollers 11 are pressed on the top of the upper flange plate of the H-shaped steel 6; two sides of the supporting seat 8 corresponding to the web plate of the H-shaped steel 6 are respectively provided with a plurality of groups of bidirectional pressing mechanisms along the longitudinal direction of the H-shaped steel 6; the bidirectional pressing mechanism is internally provided with a bidirectional hydraulic cylinder 14, a cylinder body of the bidirectional hydraulic cylinder 14 is fixedly connected with the supporting seat 8, 2 cylinder rods of the bidirectional hydraulic cylinder 14 respectively vertically extend upwards and downwards, the upwards extending cylinder rods are connected with an upper pressing roller 12, and the upper pressing roller 12 is pressed on the bottom of an upper flange plate of the H-shaped steel 6; the cylinder rod which extends downwards is connected with a lower compression roller 16, and the lower compression roller 16 is compressed on the top of the lower flange plate of the H-shaped steel 6; an arc striking traction plate 5 is arranged at one end of the H-shaped steel 6, the arc striking traction plate 5 is connected with a traction mechanism through a traction rope 4, and the arc striking traction plate 5 drags the H-shaped steel 6 to move horizontally along the longitudinal direction under the action of the traction mechanism; the welding gun 18 is arranged outside the open side of the supporting seat 8, and at least 3 groups of top pressing mechanisms and 3 groups of two-way pressing mechanisms are arranged between the welding gun 8 and the traction mechanism, and the top pressing mechanisms and the two-way pressing mechanisms are arranged in a one-to-one correspondence manner.
The supporting seat 8 is of a split structure split along a horizontal plane from the middle part and consists of an upper supporting seat frame, a lower supporting seat frame and a connecting piece; the outer sides of the connecting parts of the upper supporting seat frame and the lower supporting seat frame are respectively provided with an outer connecting plate 19, and the 2 outer connecting plates 19 are fixedly connected through connecting pieces; the inner sides of the connecting parts of the upper supporting seat frame and the lower supporting seat frame are respectively provided with an inner connecting plate 20, the 2 inner connecting plates 20 are arranged at intervals, the 2 inner connecting plates 20 are fixedly connected through connecting pieces, and the outer sides of the connecting pieces between the 2 inner connecting plates 20 are provided with distance sleeves 21.
The inner connecting plates 19 and the outer connecting plates 20 are longitudinally and continuously arranged along the supporting seat 8, and the inner connecting plates 20 and the outer connecting plates 19 are fixedly connected through a plurality of connecting pieces which are longitudinally and uniformly arranged along the supporting seat 8.
The top compressing mechanism consists of 2 telescopic adjusting devices 9,2 top bearing seats 10 and top compressing rollers 11, the 2 telescopic adjusting devices 9 correspond to two sides of the upper flange plate of the H-shaped steel 6, adjusting rods capable of being longitudinally and telescopically adjusted are arranged in the telescopic adjusting devices 9, and the adjusting rods penetrate through the top plate of the supporting seat 8 and then are connected with the top bearing seats 10; the top bearing housing 10 is connected to the top pinch roller 11 by bearings.
The number of the top pressing rollers 11 is 1 to more, and the plurality of top pressing rollers 11 are uniformly arranged along the longitudinal direction of the H-shaped steel 6; the telescopic adjusting device 9 is an electric synchronous hydraulic jack.
The bidirectional pressing mechanism consists of a bidirectional hydraulic cylinder 14, an upper bearing seat 13, an upper pressing roller 12, a lower bearing seat 15 and a lower pressing roller 16; the cylinder rod of the bidirectional hydraulic cylinder 14 which extends upwards is connected with the upper bearing seat 13, and the upper bearing seat 13 is connected with the upper pinch roller 12 through a bearing; the cylinder rod of the bidirectional hydraulic cylinder 14 which extends downwards is connected with a lower bearing seat 15, and the lower bearing seat 15 is connected with a lower pinch roller 16 through a bearing.
The bidirectional hydraulic cylinder 14 is fixedly connected with the bottom plate of the supporting seat 8 through a hydraulic cylinder fixing seat 22.
The number of the upper pinch rollers 12 and the lower pinch rollers 16 is 1 to more, and the upper pinch rollers 12 or the lower pinch rollers 16 are uniformly arranged along the longitudinal direction of the H-shaped steel 6.
And the bottom of the top plate of the supporting seat 8 is respectively provided with a distance measuring sensor 7 at the positions right above the edges of the two sides of the upper flange plate of the corresponding H-shaped steel 6.
The traction mechanism consists of a motor 1, a speed reducer 2 and a winding drum 3 which are sequentially connected, and a traction rope 4 is a steel wire rope and is wound on the winding drum 3.
The application method of the auxiliary straightening device for welding the H-shaped steel comprises the following steps:
the support seat 8 is fixed on the ground or a workbench, the H-shaped steel 6 after assembly and spot welding fixation is arranged in the support seat 8, and a web plate at one end of the H-shaped steel 8 is welded and fixed with the arc striking traction plate 5; a welding gun 18 of the automatic submerged arc welding machine is arranged on one side of the opening of the supporting seat 8; the H-shaped steel 6 is integrally compressed and welded through the cooperation of the top compression mechanism and the two-way compression mechanism; in the welding process, the welding gun 18 is motionless, and the H-shaped steel 6 moves horizontally and uniformly along the longitudinal direction by the cooperation of the traction mechanism through the traction rope 4 and the arc striking traction plate 5, so that the connection welding is realized; the welding joint positions in and after the welding process are ensured to be unchanged through compaction, and meanwhile, the upper flange plate of the H-shaped steel 6 is straightened through the combined action of the top compaction roller 11 and the upper compaction roller 12, and the lower flange plate of the H-shaped steel 6 is straightened through the combined action of the lower compaction roller 16 and the bottom plate of the supporting seat 8, so that the welding deformation of the H-shaped steel is finally avoided or reduced.
In order to adapt to welding H-shaped steel with more specifications, the supporting seat 8 adopts a split structure, the outside is fixedly connected with the connecting piece through an outer connecting plate 19, an inner connecting plate 20 is arranged in the supporting seat and is connected with the connecting piece through a distance sleeve 21, so that the supporting seat 8 with a semi-enclosed structure is ensured to have enough strength; further, a plurality of temporary supports 23 may be provided on the open side of the support base 8 to further strengthen the rigidity of the open side of the support base 8.
The telescopic adjusting mechanism 9 is preferably an electric synchronous hydraulic jack so as to keep the synchronism of the pressing down of the top pressing roller 11; other telescopic adjustment means may also be selected, such as manual screw-down means, manual or electric jacks and the like. The outer side of the telescopic adjusting mechanism 9 is provided with a protective cover 17.
The supporting seat 8 is fixed on the ground or a workbench, two ends of the bidirectional hydraulic cylinder 14 respectively extend out of the cylinder rod to drive the upper compression roller 12 and the lower compression roller 16 to be matched with the top compression roller 11, so that the moving H-shaped steel 6 is compressed, welding deformation is prevented, and the straightening effect is achieved.
The length of the supporting seat 8 is determined according to the number of groups required to be provided with the pressing mechanism, and a distance measuring sensor 7 is arranged at one end of the H-shaped steel 6, which is separated from the supporting seat 8, and is used for measuring the deformation of two sides of the upper flange plate of the H-shaped steel 6.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. An auxiliary straightening device for H-shaped steel during welding is characterized by comprising a supporting seat, a top pressing mechanism, a two-way pressing mechanism, an arc striking traction plate and a traction mechanism; the supporting seat is a semi-enclosed frame structure with a top, a bottom and one side closed and the other side open; the H-shaped steel is arranged on the bottom plate of the supporting seat during welding, and the lower flange plate is attached to the bottom plate of the supporting seat; the top plate of the supporting seat is higher than the upper flange plate of the H-shaped steel, a plurality of groups of top pressing mechanisms are longitudinally arranged at the top of the supporting seat along the H-shaped steel, top pressing rollers capable of adjusting the height are arranged in the top pressing mechanisms, and the top pressing rollers are pressed on the top of the upper flange plate of the H-shaped steel; two sides of the corresponding H-shaped steel web plate in the supporting seat are respectively provided with a plurality of groups of bidirectional pressing mechanisms along the longitudinal direction of the H-shaped steel; the bidirectional pressing mechanism is internally provided with a bidirectional hydraulic cylinder, a cylinder body of the bidirectional hydraulic cylinder is fixedly connected with the supporting seat, 2 cylinder rods of the bidirectional hydraulic cylinder respectively vertically extend upwards and downwards, the upwards extending cylinder rods are connected with an upper pressing roller, and the upper pressing roller is pressed on the bottom of the upper flange plate of the H-shaped steel; the cylinder rod which extends downwards is connected with a lower pressing roller, and the lower pressing roller is pressed on the top of the lower flange plate of the H-shaped steel; an arc striking traction plate is arranged at one end of the H-shaped steel, the arc striking traction plate is connected with a traction mechanism through a traction rope, and under the action of the traction mechanism, the arc striking traction plate pulls the H-shaped steel to move horizontally along the longitudinal direction; the welding gun is arranged outside the open side of the supporting seat, at least 3 groups of top pressing mechanisms and 3 groups of bidirectional pressing mechanisms are arranged between the welding gun and the traction mechanism, and the top pressing mechanisms and the bidirectional pressing mechanisms are arranged in one-to-one correspondence;
the top compressing mechanism consists of 2 telescopic adjusting devices, 2 top bearing seats and top compressing rollers, wherein the 2 telescopic adjusting devices correspond to two sides of the upper flange plate of the H-shaped steel, adjusting rods capable of being longitudinally and telescopically adjusted are arranged in the telescopic adjusting devices, and the adjusting rods penetrate through the top plate of the supporting seat and are connected with the top bearing seats; the top bearing seat is connected with a top pinch roller through a bearing; the bidirectional pressing mechanism consists of a bidirectional hydraulic cylinder, an upper bearing seat, an upper pressing roller, a lower bearing seat and a lower pressing roller; the cylinder rod of the bidirectional hydraulic cylinder which extends upwards is connected with an upper bearing seat, and the upper bearing seat is connected with an upper pinch roller through a bearing; the cylinder rod of the bidirectional hydraulic cylinder which extends downwards is connected with a lower bearing seat, and the lower bearing seat is connected with a lower compaction roller through a bearing; the bidirectional hydraulic cylinder is fixedly connected with the bottom plate of the supporting seat through the hydraulic cylinder fixing seat.
2. The auxiliary straightening device for welding H-shaped steel according to claim 1, wherein the supporting seat is of a split structure split along a horizontal plane from the middle part and consists of an upper supporting seat frame, a lower supporting seat frame and a connecting piece; the outer sides of the connecting parts of the upper supporting seat frame and the lower supporting seat frame are respectively provided with an outer connecting plate, and the 2 outer connecting plates are fixedly connected through connecting pieces; the inner sides of the connecting parts of the upper supporting seat frame and the lower supporting seat frame are respectively provided with an inner connecting plate, 2 inner connecting plates are arranged at intervals, 2 inner connecting plates are fixedly connected through connecting pieces, and distance sleeves are arranged on the outer sides of the connecting pieces between the 2 inner connecting plates.
3. The auxiliary straightening device for welding H-shaped steel according to claim 2, wherein the inner connecting plates and the outer connecting plates are arranged along the longitudinal direction of the supporting seat in a continuous or intermittent manner, and the inner connecting plates and the outer connecting plates are fixedly connected through a plurality of connecting pieces which are uniformly arranged along the longitudinal direction of the supporting seat.
4. The auxiliary straightening device for welding H-shaped steel according to claim 1, wherein the number of the top pressing rollers is 1 to more, and the plurality of top pressing rollers are uniformly arranged along the longitudinal direction of the H-shaped steel; the telescopic adjusting device is an electric synchronous hydraulic jack.
5. The auxiliary straightening device for welding H-shaped steel according to claim 1, wherein the number of the upper compression roller and the lower compression roller is 1 to more, and a plurality of upper compression rollers or a plurality of lower compression rollers are uniformly arranged along the longitudinal direction of the H-shaped steel.
6. The auxiliary straightening device for welding H-shaped steel according to claim 1 or 2, wherein the bottom of the top plate of the supporting seat is provided with distance measuring sensors respectively at positions right above the edges of the two sides of the upper flange plate of the corresponding H-shaped steel.
7. The auxiliary straightening device for welding H-shaped steel according to claim 1, wherein the traction mechanism comprises a motor, a speed reducer and a winding drum which are sequentially connected, and the traction rope is a steel wire rope and is wound on the winding drum.
8. The method of using the auxiliary straightener for welding H-section steel as claimed in any one of claims 1 to 7, comprising the steps of:
the support seat is fixed on the ground or a workbench, H-shaped steel after assembly and spot welding fixation is arranged in the support seat, and a web plate at one end of the H-shaped steel is welded and fixed with an arc striking traction plate; a welding gun of the automatic submerged arc welding machine is arranged at one side of the opening of the supporting seat; the H-shaped steel is integrally compressed and welded through the cooperation of the top compression mechanism and the two-way compression mechanism; in the welding process, the welding gun is motionless, and the traction mechanism is matched with the arc striking traction plate through the traction rope, so that the H-shaped steel moves horizontally and uniformly along the longitudinal direction, and the connection welding is realized; the welding joint position is unchanged in the welding process and after welding is ensured through compaction, and meanwhile, the upper flange plate of the H-shaped steel is straightened through the combined action of the top compaction roller and the upper compaction roller, and the lower flange plate of the H-shaped steel is straightened through the combined action of the lower compaction roller and the bottom plate of the supporting seat, so that the welding deformation of the H-shaped steel is finally avoided or reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129039.5A CN112317921B (en) | 2020-10-21 | 2020-10-21 | Auxiliary straightening device used during welding of H-shaped steel and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011129039.5A CN112317921B (en) | 2020-10-21 | 2020-10-21 | Auxiliary straightening device used during welding of H-shaped steel and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112317921A CN112317921A (en) | 2021-02-05 |
| CN112317921B true CN112317921B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011129039.5A Active CN112317921B (en) | 2020-10-21 | 2020-10-21 | Auxiliary straightening device used during welding of H-shaped steel and application method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112317921B (en) |
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| CN113145909A (en) * | 2021-04-25 | 2021-07-23 | 顾浩 | Multifunctional steel plate beveling machine |
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