Panel correcting device for steel box girder machining

Abstract

The invention relates to the field of correction machining, in particular to a panel correction device for steel box girder machining, which comprises a machine body and a conveyor arranged at the front end of the machine body, and further comprises at least one supporting plate arranged on the machine body and close to the conveyor; the movable support is composed of two swing arms symmetrically hinged to the bottom of the supporting plate and a connecting frame connected with the two swing arms. Before a steel plate is gripped into the straightening roller, the polishing roller linked with conveying is used for automatically cleaning the upper surface and the lower surface of the panel, hard pollutants such as oxide skin and welding slag are thoroughly removed, the polished pollutants are blocked by the scraping plate, and the polishing efficiency is improved. Therefore, the problem that hard objects are pressed into the surface of the straightening roll to form pits and indentations under huge straightening pressure is fundamentally avoided, abrasion of the straightening roll is remarkably reduced, maintenance cost and time for frequently stopping for grinding or replacing the roll are reduced, meanwhile, the clean plate surface also prevents contaminants from scratching the surface of a subsequent workpiece, and the service life of the workpiece is prolonged. And the surface quality of the steel box girder finished product is improved.

Description

Technical Field

[0001] The present invention relates to the field of correction processing, and in particular to a panel correction device for processing steel box beams. Background Art

[0002] Steel box girders are key load-bearing components of modern bridges and large buildings. The flatness of their panels is essential for ensuring the quality and precision of welding throughout the entire structure. Prior to assembly and welding, the steel plates used to make the panels must be straightened to eliminate internal stress and warping caused during rolling, transportation, and cutting. Using deformed steel plates directly for welding can lead to difficulties in splicing and weld quality control, ultimately compromising the structural strength and safety of the entire beam.

[0003] Currently, the leveling of steel plates mainly relies on straightening machines, which use multiple sets of straightening rollers arranged vertically and horizontally to apply tremendous pressure to the steel plates, causing them to undergo elastic-plastic deformation to achieve the purpose of leveling. However, in the actual feeding process, this process faces several significant problems: First, during the initial rolling and open-air stacking processes, a hard oxide scale forms on the steel plate's surface. Furthermore, after CNC cutting or plasma cutting, a large amount of slag and burrs remain on the edges and surface. When these contaminated steel plates enter the leveler, under tens or even hundreds of tons of straightening pressure, these oxide scales, welding slag, and other hard objects are pressed firmly into the relatively soft surface of the leveling rollers like a mold, forming pits, indentations, or scratches. This not only severely damages the expensive leveling rollers, reducing their service life and leveling accuracy, but the pressed-in hard objects may also cause secondary scratches on the surface of subsequent workpieces. Secondly, the face plates used in steel box girders are often thick and warped due to internal stress, making it particularly difficult to feed the plate heads into the straightening rollers. Operators often have to use tools such as crowbars to assist in feeding the material close to the dangerous roller gap while the equipment is running, which poses a significant risk of mechanical injury and a significant safety hazard. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a panel correction device for steel box girder processing to solve the technical problems in the prior art.

[0005] Based on the above objectives, the present invention provides a panel correction device for steel box girder processing, comprising a machine body and a conveyor provided at the front end of the machine body, and the device further comprising: at least one support plate, provided on the machine body and close to the conveyor; The movable bracket is composed of two swing arms symmetrically hinged to the bottom of the support plate and a connecting frame connecting the two swing arms; Auxiliary roller, rotatably mounted between one end of the two swing arms; A grinding roller is rotatably mounted on the other end of the two swing arms and is higher than the auxiliary roller. A driven gear is fixed to one end of the grinding roller. a motor fixed on the movable bracket, with an output end thereof penetrating the swing arm and fixed with a driving gear meshing with the driven gear; Pre-pressing assembly, used to drive auxiliary rollers to press the steel plate; Mounting pin, fixed to the bottom of the other end of the swing arm; Side panels, symmetrically fixed to the bottom of the support plate; The fixed cylinder is fixed to one side of the side plate, and its side wall is provided with a straight groove; The rotating sleeve is rotatably mounted on the outer wall of the fixed cylinder, and its side wall is provided with an arc groove; A first hinged rod, one end of which is hinged to the mounting pin, and the other end of which is hinged to the outer wall of the rotating sleeve; The movable rod movably passes through the fixed cylinder, and a guide pin is fixed on the side wall of the movable rod and extends into the arc groove through the straight groove; The guide plate is fixed to the side of the moving rod close to the swing arm.

[0006] Preferably, both ends of the guide plate have extended ends inclined away from the adjacent swing arms.

[0007] Preferably, the pre-compression assembly includes at least one moving rod movably penetrating the support plate and a hinge fixed to the end of the moving rod; At least one U-shaped frame fixed to the connecting frame, the U-shaped frame being hingedly mounted to the hinge member; A fixing ring is fixed to the lower end of the movement rod and a first spring is sleeved on the movement rod, and two ends of the first spring are respectively fixed between the surface of the support plate and the surface of the fixing ring.

[0008] Preferably, an oblong hole is provided in the middle of the hinge, and the upper end of the U-shaped frame is hinged in the oblong hole via a rotating shaft.

[0009] Preferably, a waist-shaped hole is provided at one end of the first hinge rod hinged to the mounting pin, and the mounting pin is hinged in the waist-shaped hole.

[0010] Preferably, the device further comprises a slide groove provided on the machine body, a slider sliding in the slide groove, an adjusting screw rotatably mounted on the machine body, and two threaded sleeves symmetrically threadedly mounted on the adjusting screw; The sliding block is fixed to the end of the support plate, the outer wall of the threaded sleeve is hinged with a second hinge rod, and the other end of the second hinge rod is hinged to the top of the support plate.

[0011] Preferably, both left and right ends of the adjusting screw rod are provided with threads, and the threads at the left and right ends are provided in opposite directions.

[0012] Preferably, a limiting ring is fixed on the adjusting screw rod, and one side of the limiting ring abuts against the end of the adjacent threaded sleeve.

[0013] Preferably, the device further comprises a dust cover fixed between the two swing arms and located above the grinding roller, at least one movable rod movably penetrating the outer wall of the dust cover, a scraper fixed to the bottom of the movable rod, and a second spring sleeved on the movable rod; There is a gap between the outer ring of the grinding roller and the inner ring of the dust cover. The two ends of the second spring respectively abut against the dust cover and the scraper. The end of the scraper away from the dust cover is provided with an inclined surface facing the grinding roller.

[0014] Preferably, there are two support plates, and the two support plates are symmetrically arranged on the machine body.

[0015] The beneficial effects of the present invention are as follows: the panel straightening device for processing steel box girders of the present invention automatically cleans the upper and lower surfaces of the panel by using the grinding rollers linked to the conveyor before the steel plate bites into the straightening rollers, thereby completely removing hard contaminants such as oxide scale and welding slag, and the contaminants polished out are blocked by the scraper, which fundamentally avoids the problem of these hard objects being pressed into the surface of the straightening roller under the huge straightening pressure to form pits and indentations, significantly reduces the wear of the straightening rollers, and reduces the maintenance cost and time of frequent shutdowns for grinding or replacement of rollers. At the same time, the clean panel surface also prevents the contaminants from scratching the surface of subsequent workpieces, thereby improving the surface quality of the finished steel box girder. The reversible auxiliary rollers and pre-pressing components can automatically guide the head of thick or warped plates into the straightening roller gap, realizing the automation of auxiliary feeding. This eliminates the need for operators to perform close and high-risk crowbar-assisted operations near the dangerous straightening roller gap, fundamentally eliminating the risk of personal injury accidents and meeting the strict requirements of safe production. In addition, the device uses a linkage mechanism to synchronously drive the guide plate to retract toward the middle while the auxiliary roller is raised for feeding and cleaning, automatically centering and guiding the moving steel plate. This effectively prevents damage to the equipment caused by the steel plate colliding with the machine body due to deviation, and ensures that the steel plate enters the straightening station smoothly with the correct posture, thereby improving the stability and production efficiency of the entire straightening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the partial structure of the machine body, conveyor and support plate in the present invention; Figure 3 It is a top view of the partial structures of the machine body, support plate and dust cover in the present invention; Figure 4 It is a schematic diagram of the partial structure of the machine body, support plate and auxiliary rollers in the present invention; Figure 5 It is a schematic diagram of the partial structure of the support plate, side plate and movable bracket in the present invention; Figure 6 It is an exploded schematic diagram of the local structures such as the side plate, the first hinged rod and the rotating sleeve in the present invention; Figure 7 It is a schematic diagram of the partial structure of the mounting pin, the first hinge rod and the rotating sleeve in the present invention; Figure 8 It is an exploded schematic diagram of the local structures such as the side panels, fixed cylinders and movable rods in the present invention; Figure 9 For the present invention Figure 8 A schematic diagram of the structure at center A; Figure 10 It is a schematic diagram of the local structure of the movable bracket, the adjusting screw rod and the support plate in the present invention; Figure 11 For the present invention Figure 10 A magnified schematic diagram of the structure at point B in the middle; Figure 12 It is a schematic diagram of the local structure of the movable bracket, dust cover and scraper in the present invention; Figure 13 For the present invention Figure 12 Enlarged schematic diagram of the structure at point C in the middle.

[0018] The following are marked in the figure: 1. Machine body; 2. Conveyor; 3. Support plate; 301. Side plate; 4. Movable bracket; 5. Auxiliary roller; 6. Grinding roller; 601. Driven gear; 7. Motor; 701. Driving gear; 8. Mounting pin; 9. First hinge rod; 10. Fixed cylinder; 1001. Straight groove; 11. Rotating sleeve; 1101. Arc groove; 12. Moving rod; 1201. Guide pin; 13. Guide plate; 14. Moving rod; 15. Hinge; 16. U-shaped frame; 17. Fixed ring; 18. First spring; 19. Adjusting screw; 1901. Limiting ring; 20. Threaded sleeve; 21. Second hinge rod; 22. Dust cover; 23. Movable rod; 24. Scraper; 25. Second spring. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0021] The first aspect of the present invention provides a panel correction device for steel box girder processing, such as Figure 1-13 As shown, the device includes a body 1 and a conveyor 2 provided at the front end of the body 1, and further includes: At least one support plate 3 is provided on the machine body 1 and close to the conveyor 2; The movable bracket 4 is composed of two swing arms symmetrically hinged to the bottom of the support plate 3 and a connecting frame connecting the two swing arms; The auxiliary roller 5 is rotatably mounted between one end of the two swing arms; it should be noted that the surface of the auxiliary roller 5 is a knurled metal roller; The grinding roller 6 is rotatably mounted on the other end of the two swing arms and is higher than the auxiliary roller 5. A driven gear 601 is fixed to one end of the grinding roller 6. It should be noted that both ends of the auxiliary roller 5 and the grinding roller 6 are rotatably mounted on the swing arms via bearings to improve the rotational stability of the auxiliary roller 5 and the grinding roller 6. The motor 7 is fixed on the movable bracket 4, and its output end passes through the swing arm and is fixed with a driving gear 701 that meshes with the driven gear 601; A pre-pressing assembly is used to drive the auxiliary roller 5 to press the steel plate; Mounting pin 8, fixed to the bottom of the other end of the swing arm; Side plates 301 are symmetrically fixed to the bottom of the support plate 3; The fixed cylinder 10 is fixed to one side of the side plate 301, and its side wall is provided with a straight groove 1001; The rotating sleeve 11 is rotatably mounted on the outer wall of the fixed cylinder 10, and an arc-shaped groove 1101 is formed on its side wall. It should be noted that the inner wall of the rotating sleeve 11 and the outer wall of the fixed cylinder 10 are rotatably mounted via a bearing to improve the rotation stability of the rotating sleeve 11. A first hinged rod 9, one end of which is hinged to the mounting pin 8, and the other end of which is hinged to the outer wall of the rotating sleeve 11; The movable rod 12 movably passes through the fixed cylinder 10, and a guide pin 1201 is fixed on the side wall thereof and extends into the arc groove 1101 through the straight groove 1001; The guide plate 13 is fixed to a side of the moving rod 12 close to the swing arm.

[0022] When the steel plate passes through the conveyor 2 and enters the straightening roller in the machine body 1, the end of the steel plate first contacts the auxiliary roller 5. At this time, the end of the steel plate is squeezed on the curved surface of the auxiliary roller 5, trying to lift the auxiliary roller 5. This force will drive the entire swing arm to rotate backward and upward around the hinge point with the support plate 3. When the auxiliary roller 5 flips upward and contacts the surface of the steel plate, the lever principle is used to drive the swing arm to drive the grinding roller 6 at the other end to rotate downward and contact the surface of the steel plate. At this time, under the drive of the motor 7, the active gear 701 at the output end of the motor 7 is engaged with the driven gear 601 at the end of the grinding roller 6, so that the grinding roller 6 rotates, cleaning the contaminants such as oxide scale, welding slag and burrs on the surface of the steel box girder panel, and preventing hard objects such as oxide scale and welding slag from being firmly pressed into the relatively soft leveling roller surface like a mold under the straightening pressure of tens or even hundreds of tons, forming pits, indentations or scratches; As the swing arm deflects, the mounting pin 8 at the bottom of the swing arm deflects downward, pushing the hinged first hinged rod 9, and the first hinged rod 9 squeezes and pushes the rotating sleeve 11 hinged at one end to rotate in the fixed cylinder 10, prompting the rotating sleeve 11 to push the guide pin 1201 on the moving rod 12 to move linearly along the straight groove 1001 on the side wall of the fixed cylinder 10 during rotation, so that the two moving rods 12 drive the corresponding guide plates 13 to move close to the side wall of the steel plate, and guide the steel plate to the middle during transportation to avoid the steel plate from entering the machine. The position of the straightening roller in the body 1 is skewed and hits the body 1, causing damage to the straightening machine. In this way, on the one hand, the auxiliary feeding before the steel plate bites can transport the thicker and slightly warped steel box girder panel to the straightening roller for biting. The operator does not need to perform close operations near the roller gap in the dangerous area, which greatly reduces the probability of safety accidents. On the other hand, through the combination of the linkage structure, the pollutants on the surface of the transported steel box girder panel can be cleaned, and the transported steel box girder panel can be guided to avoid skewed transportation.

[0023] In this embodiment, both ends of the guide plate 13 have extension ends that are tilted away from the adjacent swing arms. By tilting the extension ends, the angle between the two symmetrical guide plates 13 is increased, further facilitating the guiding of the steel plate.

[0024] In this embodiment, the pre-pressing assembly includes at least one moving rod 14 that movably extends through the support plate 3 and a hinge 15 fixed to the end of the moving rod 14. It should be noted that multiple moving rods 14 can be provided and movably extend through the support plate 3 at equal intervals, thereby providing a uniform and stable pressing action for the auxiliary roller 5. At least one U-shaped frame 16 fixed to the connecting frame, the U-shaped frame 16 being hingedly mounted to the hinge member 15; A fixing ring 17 is fixed to the lower end of the movement rod 14 and a first spring 18 is sleeved on the movement rod 14 . Both ends of the first spring 18 are fixed between the surface of the support plate 3 and the surface of the fixing ring 17 .

[0025] After the auxiliary roller 5 turns upward and contacts the surface of the steel plate, the U-shaped frame 16 turns upward simultaneously with the connecting frame. At this time, the U-shaped frame 16 pushes the hinged hinge 15 to move upward, so that the hinge 15 drives the fixed motion rod 14 to rise, and the first spring 18 is squeezed. At the same time, the first spring 18 generates a reverse force to push the U-shaped frame 16 hinged to the hinge 15 downward, so that the connecting frame pushes the auxiliary roller 5 to press against the surface of the steel plate, thereby achieving an auxiliary pressing effect on the steel plate, further helping the steel plate to enter the straightening roller. In addition, it should be noted that, since the surface of the auxiliary roller 5 has a knurled metal roller, after the auxiliary roller 5 flips upward and contacts the surface of the steel plate, the auxiliary roller 5 generates vertical downward pressure on the surface of the steel plate through the pre-pressing component, significantly increasing the positive pressure, thereby increasing the friction force. The contact point between the auxiliary roller 5 and the surface of the steel plate will generate a horizontal component friction force, and the direction of this force is forward, which is equivalent to giving the steel plate a boosting "thrust", helping the steel plate to enter the straightening roller, and further playing an auxiliary pushing role.

[0026] In this embodiment, an oblong hole is formed in the middle of the hinge 15, and the upper end of the U-shaped frame 16 is hingedly connected to the oblong hole via a rotating shaft. Since the upper end of the U-shaped frame 16 is hingedly connected to the oblong hole in the middle of the hinge 15 via the rotating shaft, when the swing arm drives the connecting frame to flip upward, the U-shaped frame 16 can be rotated without interference.

[0027] In this embodiment, the first hinged rod 9 has a waist-shaped hole at one end hinged to the mounting pin 8, and the mounting pin 8 is hingedly mounted within this waist-shaped hole. When the first hinged rod 9 pushes the hinged rotating sleeve 11 to rotate, the waist-shaped hole at the end of the first hinged rod 9 near the mounting pin 8 allows the rotating sleeve 11 to have a certain amount of rotational margin, thereby preventing the rotating sleeve 11 from rotating normally.

[0028] In this embodiment, the device further includes a slide groove provided on the body 1, a slider sliding in the slide groove, an adjusting screw 19 rotatably mounted on the body 1, and two threaded sleeves 20 symmetrically threadedly mounted on the adjusting screw 19. It should be noted that both ends of the adjusting screw 19 are rotatably mounted to the body 1 via bearings. The slider is fixed to the end of the support plate 3 , a second hinge rod 21 is hinged to the outer wall of the threaded sleeve 20 , and the other end of the second hinge rod 21 is hinged to the top of the support plate 3 .

[0029] When the height of the auxiliary roller 5 needs to be adjusted relative to the thickness of the steel plate, the adjusting screw 19 is rotated to make the two threaded sleeves 20 threadedly installed on the symmetrical surface of the adjusting screw 19 move relative or oppositely, causing the threaded sleeve 20 to drive the hinged second hinged rod 21 to deflect, and since the two ends of the support plate 3 are slidably installed on the machine body 1, the second hinged rod 21 pulls the support plate 3 to be vertically raised and lowered during deflection, thereby achieving the effect of adjusting the height of the auxiliary roller 5 and improving practicality.

[0030] In this embodiment, the left and right ends of the adjusting screw 19 are both provided with threads, and the threads on the left and right ends are arranged in opposite directions. It should be noted that the left and right ends of the adjusting screw 19 are arranged in opposite directions. When the adjusting screw 19 rotates, the two threaded sleeves 20 can simultaneously move in opposite directions or relative to each other, thereby achieving the purpose of adjusting the height of the auxiliary roller 5.

[0031] In this embodiment, a limit ring 1901 is fixed to the adjusting screw 19, and one side of the limit ring 1901 abuts against the end of the adjacent threaded sleeve 20. The limit ring 1901 restricts the further movement of the threaded sleeve 20 when the auxiliary roller 5 descends to the limit position, preventing the two auxiliary rollers 5 from colliding and affecting operation.

[0032] In this embodiment, the device further includes a dust cover 22 fixed between the two swing arms and located above the grinding roller 6, at least one movable rod 23 that movably penetrates the outer wall of the dust cover 22, a scraper 24 fixed to the bottom of the movable rod 23, and a second spring 25 sleeved on the movable rod 23. It should be noted that multiple movable rods 23 can be provided, and they are equidistantly and movably arranged to penetrate the outer wall of the dust cover 22, so as to provide a uniform and stable pressing action for the scraper 24. There is a gap between the outer ring of the grinding roller 6 and the inner ring of the dust cover 22 . The two ends of the second spring 25 respectively abut against the dust cover 22 and the scraper 24 . The end of the scraper 24 away from the dust cover 22 is provided with an inclined surface facing the grinding roller 6 .

[0033] By setting the dust cover 22, the dispersion of grinding dust can be reduced, and when the steel plate contacts the inclined surface of the scraper 24, the scraper 24 moves upward through the extrusion of the inclined surface, causing the second spring 25 to be squeezed and contracted. When the inclined surface of the scraper 24 is released from extrusion, the second spring 25 elastically returns to its original position after being stressed, pushing the scraper 24 to contact the surface of the steel plate. When the steel plate is being conveyed, the scraper 24 scrapes the pollutants attached to the surface of the steel plate during grinding, isolating the pollutants on one side of the scraper 24, reducing the pollutants on the surface of the steel plate from entering the straightening roller, further reducing the maintenance cost and time of frequent shutdowns for grinding or replacement of rollers, and the clean plate surface also prevents pollutants from scratching the surface of subsequent workpieces, thereby improving the surface quality of the finished steel box girder.

[0034] In this embodiment, there are two support plates 3, which are symmetrically arranged on the machine body 1. It should be added that by setting up two support plates 3, auxiliary rollers 5 and grinding rollers 6 can be set up on the upper and lower sides of the steel plate to grind the upper and lower sides of the steel plate at the same time and assist in guiding and pushing the steel plate.

[0035] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0036] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A panel correction device for processing a steel box beam, comprising a machine body (1) and a conveyor (2) arranged at the front end of the machine body (1), characterized in that: The device also includes: At least one support plate (3) is provided on the machine body (1) and is close to the conveyor (2); A movable bracket (4) is composed of two swing arms symmetrically hinged to the bottom of the support plate (3) and a connecting frame connecting the two swing arms; An auxiliary roller (5) is rotatably mounted between one end of the two swing arms; A grinding roller (6) is rotatably mounted on the other end of the two swing arms and is higher than the auxiliary roller (5), and a driven gear (601) is fixed to one end of the grinding roller (6); A motor (7) is fixed on the movable bracket (4), and its output end passes through the swing arm and is fixed with a driving gear (701) that meshes with the driven gear (601); A pre-pressing assembly for driving an auxiliary roller (5) to press the steel plate; A mounting pin (8) is fixed to the bottom of the other end of the swing arm; Side plates (301) are symmetrically fixed to the bottom of the support plate (3); A fixed cylinder (10) is fixed to one side of the side plate (301), and a straight groove (1001) is formed on its side wall; A rotating sleeve (11) is rotatably mounted on the outer wall of the fixed cylinder (10), and an arc-shaped groove (1101) is formed on its side wall; A first hinged rod (9), one end of which is hinged to the mounting pin (8), and the other end of which is hinged to the outer wall of the rotating sleeve (11); A movable rod (12) movably penetrates the fixed cylinder (10), and a guide pin (1201) is fixed on its side wall and extends into the arc groove (1101) through the straight groove (1001); The guide plate (13) is fixed to a side of the moving rod (12) close to the swing arm.

2. A panel correction device for steel box girder processing according to claim 1, characterized in that: Both ends of the guide plate (13) have extension ends inclined in a direction away from the adjacent swing arm.

3. The panel correction device for steel box girder processing according to claim 1, characterized in that: The pre-pressing assembly comprises at least one moving rod (14) movably penetrating the support plate (3) and a hinge (15) fixed to the end of the moving rod (14); at least one U-shaped frame (16) fixed to the connecting frame, the U-shaped frame (16) being hingedly mounted to the hinge member (15); A fixing ring (17) is fixed to the lower end of the movement rod (14) and a first spring (18) is sleeved on the movement rod (14), wherein both ends of the first spring (18) are respectively fixed between the surface of the support plate (3) and the surface of the fixing ring (17).

4. A panel correction device for steel box girder processing according to claim 3, characterized in that: An oblong hole is provided in the middle of the hinged member (15), and the upper end of the U-shaped frame (16) is hinged in the oblong hole via a rotating shaft.

5. The panel correction device for steel box girder processing according to claim 1, characterized in that: One end of the first hinged rod (9) hinged to the mounting pin (8) is provided with a waist-shaped hole, and the mounting pin (8) is hinged in the waist-shaped hole.

6. The panel correction device for steel box girder processing according to claim 1, characterized in that: The device further comprises a slide groove provided on the machine body (1), a slider sliding in the slide groove, an adjusting screw rod (19) rotatably mounted on the machine body (1), and two threaded sleeves (20) symmetrically threadedly mounted on the adjusting screw rod (19); The slider is fixed to the end of the support plate (3); the outer wall of the threaded sleeve (20) is hinged with a second hinge rod (21); and the other end of the second hinge rod (21) is hinged to the top of the support plate (3).

7. A panel correction device for processing a steel box girder according to claim 6, characterized in that: The left and right ends of the adjusting screw rod (19) are both provided with threads, and the directions of the threads at the left and right ends are opposite.

8. The panel correction device for steel box girder processing according to claim 6, characterized in that: A limiting ring (1901) is fixed on the adjusting screw rod (19), and one side of the limiting ring (1901) abuts against the end of the adjacent threaded sleeve (20).

9. The panel correction device for steel box girder processing according to claim 1, characterized in that: The device further comprises a dust cover (22) fixed between the two swing arms and located above the grinding roller (6), at least one movable rod (23) movably penetrating the outer wall of the dust cover (22), a scraper (24) fixed to the bottom of the movable rod (23), and a second spring (25) sleeved on the movable rod (23); There is a gap between the outer ring of the grinding roller (6) and the inner ring of the dust cover (22), and the two ends of the second spring (25) respectively abut against the dust cover (22) and the scraper (24), and the end of the scraper (24) away from the dust cover (22) is provided with an inclined surface facing the grinding roller (6).

10. The panel correction device for steel box girder processing according to claim 1, characterized in that: Two support plates (3) are provided, and the two support plates (3) are symmetrically arranged on the machine body (1).

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