Large wind power tower cylinder high-precision automatic plate rolling forming device

Abstract

The present application relates to the technical field of plate rolling forming, and discloses a large wind power tower cylinder high-precision automatic plate rolling forming device, the inside lower end of a base fixed frame is welded with a lining plate, gantries are respectively fixed at the two ends of the inside of the base fixed frame, lower pressing rollers are rotatably connected between the front and rear ends of the gantries, a driving unit is connected to the left side of the lower pressing roller at the front end, upper pressing rollers are rotatably connected at the two ends of the gantries, and the two ends of the upper pressing rollers are connected with hydraulic structures through the upper ends of the gantries, a plate rolling forming auxiliary positioning mechanism is located above the front and rear parts of the base fixed frame, the two ends of the inside of the plate rolling forming auxiliary positioning mechanism are connected to the gantries, and a plate rolling forming upper end face clamping positioning mechanism is arranged at the upper end of one gantry. The present application realizes high-precision automatic plate rolling of a large wind power tower cylinder, does not need frequent manual adjustment of alignment, quickly adapts to the plate rolling requirements of wind power tower cylinders of various specifications, and adapts to the requirements of automatic continuous production.

Description

Technical Field

[0001] This invention relates to the field of plate rolling technology, specifically to a high-precision automatic plate rolling device for large wind turbine towers. Background Technology

[0002] As the wind power industry rapidly develops towards large-megawatt units, the diameter, wall thickness, and length of wind turbine towers continue to increase, placing higher demands on the precision of rolling and forming and production efficiency.

[0003] Existing conventional plate rolling machines mostly adopt a single lower pressure roller driven and another roller driven. The difference in linear speed between the rollers can easily cause the plate to slip, surface scratches and axial deviation. At the same time, when rolling wind turbine tower cylinders that are more than ten meters long, the lower pressure roller is only supported at both ends. Under the heavy pressure of the thick plate, it is easy to cause deflection deformation in the middle, resulting in "bulging" error in the cylinder, and it is difficult to meet the standards for roundness and generatrix straightness.

[0004] The upper pressure rollers of existing plate rolling machines are mostly integral structures. When changing rollers of different diameters to adapt to different tower diameters, the disassembly and assembly process is cumbersome and the downtime is long. Moreover, there is no active limiting mechanism for the side of the plate during the rolling process. The self-weight deviation of large plates and the error of the feeding angle can easily cause the side to move, resulting in excessive misalignment at the joint. This requires a lot of manual correction afterward, and may even cause the plate to be scrapped.

[0005] Existing plate rolling machines rely solely on the extrusion force of three pressure rollers to bend and shape the plate. For large wind turbine towers, the free section of the plate that does not enter the roller gap during the rolling process will undergo radial deformation due to its own weight and springback stress, resulting in excessive ellipticity and insufficient coaxiality of the overall tower body. Traditional processes require secondary correction through specialized rounding equipment after rolling, which is a long process, inefficient, and has limited correction accuracy.

[0006] The precision of end forming is a core indicator of wind turbine tower quality, directly affecting the quality of subsequent tower section assembly and welding, as well as overall coaxiality. In existing technologies, thick-walled plates often exhibit significant end springback after rolling, resulting in problems such as "opening," poor end flatness, and excessive ellipticity—long-standing technical pain points that the industry has struggled to effectively address. Existing patents primarily focus on improving the rolling rollers themselves, lacking online end-forming solutions. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a high-precision automatic plate rolling forming device for large wind turbine towers, solving its technical problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a high-precision automatic plate rolling forming device for large wind turbine towers, comprising: A base fixing frame, wherein a liner plate is welded to the lower inner end of the base fixing frame; The gantry frame is fixedly installed at both ends inside the base fixing frame; The lower pressure roller is rotatably connected between the front and rear ends of the gantry frame, and the drive unit is connected to the left side of the lower pressure roller at the front end. The upper pressure roller has two ends rotatably connected to the inside of the gantry frame, and both ends of the upper pressure roller pass through the upper end of the gantry frame and are connected to a hydraulic structure. A plate forming auxiliary positioning mechanism is located near the front and rear of the base fixing frame, and the inner two ends of the plate forming auxiliary positioning mechanism are connected to the gantry frame. A plate forming upper end face clamping and positioning mechanism is provided at the upper end of one end of a gantry frame.

[0009] The base frame serves as the overall load-bearing base of the device, providing the installation foundation and structural support for all internal mechanisms such as the liner and gantry.

[0010] Preferably, both ends of the lower pressure roller are fixed with fixed gears, and the left side of the lower pressure roller at the front end is connected to an inner shaft through the fixed gear. The output end of the drive unit is fixedly connected to the outer end of the inner shaft by bolts. A transition gear is meshed between the fixed gears below, and a rotating shaft is connected through the interior of the transition gear. One end of the rotating shaft is rotatably connected to the gantry frame, and the other end of the rotating shaft is rotatably connected to a bracket. Fixed gears are fixedly installed at both ends of the lower pressure rollers and transmit power through meshing with the adapter gears to achieve synchronous rotation of the two lower pressure rollers. The inner shaft extends from the front lower pressure roller shaft end and is rigidly connected to the output end of the drive unit, transmitting drive torque to the fixed gears. The adapter gears mesh below the front and rear fixed gears, transmitting power and reversing direction to ensure that the two lower pressure rollers rotate synchronously and in the same direction. The rotating shaft rod passes through and is fixed inside the adapter gear, providing a rotational support shaft for the adapter gear. The bracket rotatably supports the outer end of the rotating shaft rod, improving the overall stability and rigidity of the adapter gear transmission structure.

[0011] Preferably, the upper pressure roller is rotatably connected to an extension shaft, and a connecting roller shaft is installed at the outer end of the extension shaft; Both the inner ends of the extension shaft and the connecting roller shaft are fixed with mating discs, the inner ends of the mating discs are fixed with sealing discs, and locking bolts are distributed around the circumference of the mating discs through threaded connections. A convex shaft is fixedly provided at the outer end of the connecting roller shaft; The extension shaft is connected to the end of the upper pressure roller, realizing the transition docking between the upper pressure roller body and the connecting roller shaft; the connecting roller shaft is docked to the outer end of the extension shaft, serving as a rotating connection component between the upper pressure roller and the moving block; docking discs are respectively located at the docking ends of the extension shaft and the connecting roller shaft, and the two shafts are rigidly connected coaxially by locking bolts; the sealing disc is located inside the docking disc, ensuring that the docking end faces of the extension shaft and the connecting roller shaft fit and seal, improving the coaxial docking accuracy; the locking bolts are connected to the docking discs along the circumference, locking and fixing the two sets of docking discs, realizing the detachable connection of the upper pressure roller's split structure; the convex shaft is fixed to the outer end of the connecting roller shaft and inserted into the moving block, realizing the rotating assembly of the upper pressure roller and the moving block.

[0012] Preferably, a movable block is slidably connected inside the gantry frame, and the convex shaft is connected through the interior of the movable block; The hydraulic structure includes a hydraulic station, a control box, hydraulic cylinders, and a hydraulic column. The hydraulic station and control box are installed on the upper left side of the base fixing frame, and the control box is electrically connected to the hydraulic station. The hydraulic cylinders are respectively installed on the upper end of the gantry frame. The hydraulic column is connected through to the output end of the hydraulic cylinder and is fixed to the upper end of the moving block. The moving block is slidably connected inside the gantry frame, supporting the cam shaft and the end of the upper pressure roller, driving the upper pressure roller to rise and fall vertically along the gantry frame; the hydraulic station provides a pressure oil source for the entire hydraulic system and provides hydraulic support for the output power of the hydraulic cylinder; the control box is electrically connected to the hydraulic station, and electrically controls and adjusts the pressure, stroke and action logic of the hydraulic system; the hydraulic cylinder is installed at the upper end of the gantry frame, outputting linear driving force to drive the hydraulic column to extend and retract; the hydraulic column is connected between the output end of the hydraulic cylinder and the moving block, transmitting driving force to drive the moving block and the upper pressure roller to rise and fall.

[0013] Preferably, the bottom of the extension shaft is provided with a side edge correction auxiliary structure for the coil plate. The side edge correction auxiliary structure for the coil plate includes a positioning block, a connecting plate, a movable frame, an auxiliary roller, and a spring. The positioning block is fixed to the bottom of the extension shaft, the connecting plate is fixed to the bottom of the positioning block, the movable frame is U-shaped and passes through the interior of the connecting plate, the spring is fixedly distributed between the inner side wall of the movable frame and the connecting plate, and the auxiliary roller is rotatably connected between the movable frames, and the auxiliary roller is located at the lower ends of both sides of the upper pressure roller. The side edge correction auxiliary structure of the rolled plate is located at the bottom of the extension shaft to elastically limit the side edge of the rolled plate and prevent the plate from deviating axially along the upper pressure roller. The positioning block is fixed at the bottom of the extension shaft to provide an installation positioning reference for the entire side edge correction auxiliary structure of the rolled plate. The connecting plate is fixed at the bottom of the positioning block to provide an installation support base for the movable frame and spring. The movable frame is installed in a U-shape through the connecting plate, carrying the auxiliary roller and can float laterally to adapt to the elastic limit requirements. The auxiliary roller is rotatably installed between the movable frames, rolling against the side edge of the plate to limit axial movement and prevent scratching the plate surface. The spring is located between the inner wall of the movable frame and the connecting plate to provide elastic buffering force, realize floating limit, and adapt to the thickness fluctuation of the plate.

[0014] Preferably, the upper end of the liner is provided with a lower pressure roller rotation auxiliary support structure, the lower pressure roller rotation auxiliary support structure includes a support roller and a support plate, the support plate is fixed to the upper end of the liner, and a movable rod is connected through the inside of the support roller, the movable rod is rotatably connected to the upper end of the support plate; The auxiliary support structure for the lower pressure roller is arranged on the upper part of the liner plate, providing multi-point support for the lower pressure roller from the bottom and reducing the deflection deformation of the long roller; the support roller rolls against the bottom of the lower pressure roller, providing auxiliary support for the lower pressure roller and offsetting the bending load caused by the heavy pressure of the plate; the movable rod passes through the inside of the support roller, providing a rotation support shaft for the support roller; the support plate is fixed to the upper part of the liner plate, and the installation position of the support roller is fixed by rotating the movable support rod.

[0015] Preferably, the roll forming auxiliary positioning mechanism includes an auxiliary limiting roller, a side plate, an extension rod, an electric telescopic device one, an electric telescopic device two, and an electric telescopic device three. The side plate is an arc-shaped plate structure with a shaft cylinder distributed through it. The extension rod is fixed to the outer end of the auxiliary limiting roller and is rotatably connected to the inside of the shaft cylinder. The upper ends of the electric telescopic device one and the electric telescopic device two are respectively hinged to the upper and lower ends of the inner side of the side plate. The lower end of the side plate is provided with a groove, and the upper end of the electric telescopic device three is movably connected to the inside of the groove; The lower ends of the electric telescopic device 1, electric telescopic device 2 and electric telescopic device 3 are all hinged to the front and rear ends of the gantry frame. The auxiliary limiting rollers roll against the outer wall of the cylinder, forming a radial constraint on the cylinder, assisting in shaping and reducing springback deformation; the side plate has an arc-shaped plate structure, supporting multiple sets of auxiliary limiting rollers, and adapting to the arc-shaped outer contour of the cylinder; the extension rod is fixed to the outer end of the auxiliary limiting rollers and inserted into the shaft cylinder to realize the rotational installation of the auxiliary limiting rollers; the shaft cylinder is fixed through the inside of the side plate, providing rotational support holes for the extension rod; electric telescopic device one is hinged to the upper inner side of the side plate, driving and adjusting the radial position and pitch angle of the upper part of the side plate; electric telescopic device two is hinged to the lower inner side of the side plate, driving and adjusting the radial position and pitch angle of the lower part of the side plate; a groove is opened at the lower end of the side plate, providing movable connection space for electric telescopic device three, adapting to the angle adjustment of the side plate; the upper end of electric telescopic device three is movably connected to the inside of the groove, working in conjunction with electric telescopic device one and electric telescopic device two to adjust the height and overall posture of the side plate.

[0016] Preferably, the upper end face clamping and positioning mechanism for the rolled plate forming includes a base plate, columns, a horizontal plate, an electro-hydraulic device, an auxiliary rod, a transition plate, an inner support structure, and an outer pressing structure. The base plate is installed on the upper end of the gantry frame, the columns are fixedly distributed on the upper end of the base plate, the horizontal plate is fixed on the upper end of the columns, the electro-hydraulic device is fixed at the bottom of the horizontal plate and has a hydraulic rod that extends upwards through it, the transition plate is an L-shaped plate structure fixed at the upper end of the hydraulic rod, the auxiliary rod is fixed at the lower end of the transition plate and slides through it to the horizontal plate, the inner support structure extends through the interior of the transition plate, and the outer pressing structure is located on the upper end of the transition plate. The base plate is installed on the upper surface of the gantry frame, providing a bottom mounting reference for the entire coil forming upper surface clamping and positioning mechanism; the column is fixed to the upper part of the base plate, supporting the horizontal plate and forming a vertical mounting frame for the clamping mechanism; the horizontal plate is fixed to the top of the column, providing an installation and guiding foundation for the electro-hydraulic device and the auxiliary rod; the electro-hydraulic device is fixed to the bottom of the horizontal plate, driving the overall lifting and lowering of the adapter plate, adapting to cylinders of different diameters; the hydraulic rod connects the electro-hydraulic device and the adapter plate, transmitting the lifting driving force; the auxiliary rod is fixed to the lower end of the adapter plate, sliding through the horizontal plate to ensure the stability of the adapter plate's lifting and lowering process; the adapter plate is L-shaped, serving as a load-bearing base integrating the inner support structure and the outer pressing structure; the inner support structure supports the inner wall from inside the cylinder, offsetting the inward rebound stress at the port; the outer pressing structure presses the outer wall from outside the cylinder, offsetting the outward rebound stress at the port.

[0017] Preferably, the inner support structure includes an electric push rod device, a push rod, and a support roller shaft. The electric push rod device is fixedly distributed at the outer end of the adapter plate, the push rod is connected through to the output end of the electric push rod device, and the support roller shaft is rotatably connected to the outer end of the push rod. The push rod is externally rotatably connected to a limiting ring, and a protruding plate is fixedly provided at the lower end of the limiting ring. A connecting rod is connected between the inner end of the protruding plate and the adapter plate. The connecting rod is a telescopic structure. The electric push rod device is fixed to the outer end of the adapter plate, driving the push rod to extend and retract, adjusting the radial position of the support roller shaft; the push rod connects the electric push rod device and the support roller shaft, transmitting linear thrust and adjusting the support position; the support roller shaft is rotatably installed on the outer end of the push rod, rolling against the inner wall of the cylinder, providing internal support without hindering the rotation of the cylinder; the limiting ring is rotatably fitted on the outside of the push rod, forming a radial constraint on the push rod and preventing the push rod from deviating after extension; the protruding plate is fixed to the lower end of the limiting ring, connecting the connecting rod and transmitting radial support force; the connecting rod is a telescopic structure, connecting the protruding plate and the adapter plate, providing lateral support for the push rod and improving support rigidity.

[0018] Preferably, the external pressing structure includes a transition rod, an end plate, an electro-hydraulic device II, a hydraulic rod II, a movable plate, a crossbar, a movable cylinder, and a conveyor belt. The lower end of the transition rod is fixed to the outer end of the transition plate, and the end plate is fixed to the upper end of the transition rod. The second electro-hydraulic device is fixed to the upper end of the end plate, the second hydraulic rod is connected through to the lower end of the second electro-hydraulic device, the moving plate is fixed to the lower end of the second hydraulic rod, the crossbar is fixedly distributed on the side of the moving plate in an arc-shaped trajectory, the movable cylinder is rotatably connected to the outer end of the crossbar, and the conveyor belt is sleeved on the outside of the movable cylinder. The adapter rod is fixed to the outer end of the adapter plate, supporting the end plate and raising the installation height of the external pressing structure; the end plate is fixed to the upper end of the adapter rod, providing an installation reference for the second electro-hydraulic device; the second electro-hydraulic device is fixed to the upper end of the end plate, driving the moving plate to rise and fall, and adjusting the magnitude of the external clamping force; the second hydraulic rod connects the second electro-hydraulic device and the moving plate, transmitting the clamping driving force; the moving plate is fixed to the lower end of the second hydraulic rod, bearing the arc-shaped crossbars and the movable cylinder, transmitting the clamping force; the crossbars are fixed to the side of the moving plate along the arc trajectory, providing installation support for the movable cylinder and adapting to the arc surface of the cylinder; the movable cylinder is rotatably installed on the outer end of the crossbars, supporting the conveyor belt and allowing it to roll synchronously with the cylinder; the conveyor belt is fitted onto the outside of the movable cylinder, forming an arc-shaped clamping surface, rolling and clamping against the outer wall of the cylinder, avoiding surface scratches.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Two sets of gantry frames are vertically fixed to the inner ends of the base fixing frame to form a symmetrical gantry bearing structure to bear the entire load of the upper and lower pressure rollers; two lower pressure rollers are arranged in parallel and connected to the lower part between the two gantry frames at both ends to form the lower support working surface for rolling; the left side of the lower pressure roller at the front end is connected to the drive unit to provide power for rolling, and the two lower pressure rollers are rotated synchronously through the gear transmission chain of the drive roller, the transfer gear and the driven roller; multiple sets of lower pressure roller rotation auxiliary support structures are arranged on the upper part of the liner plate, and the top roller surface of the support roller is in contact with the bottom roller surface of the lower pressure roller to form a multi-point auxiliary support system. The gear transmission chain consisting of fixed gears and adapter gears achieves strict synchronous drive of the two lower pressure rollers, ensuring that the roller surface linear speeds are completely consistent. This eliminates the cause of differential speed deviation from the power source and improves the driving torque, making it suitable for the rolling requirements of thick-walled wind turbine panels. The supporting multi-set lower pressure roller rotation auxiliary support structure forms multi-point continuous support at the bottom of the roller body, ensuring that the rolling gap between the upper and lower pressure rollers is uniform throughout the entire roller body. This effectively avoids forming errors such as bulging in the middle of the cylinder and tightness at both ends, and significantly improves the straightness of the cylinder generatrix and the overall roundness accuracy.

[0020] (2) By arranging the upper pressure roller in parallel above the middle of the two lower pressure rollers, and installing both ends on the moving blocks inside the gantry through the extension structure, the upper pressure roller together with the lower pressure rollers constitutes the core working surface of the three-roll winding; the upper pressure roller adopts a split and detachable structure, with the two ends of the roller body connected to the extension shaft, the outer end of the extension shaft docking with the roller shaft, and the docking ends of the extension shaft and the connecting roller shaft are fixedly equipped with docking discs, and the inner side of the docking disc is equipped with a sealing disc to ensure the coaxiality of the docking, and the docking disc is locked through multiple sets of locking bolts in the circumferential direction; the outer end of the connecting roller shaft extends out a convex shaft. The upper pressure roller, serving as the rotating connection interface with the moving block, adopts a split structure with locking to the connecting plate. Removing the locking bolts separates the extension shaft from the connecting roller shaft, releasing the rotational constraint at one end of the upper pressure roller, allowing the formed large wind turbine tower to be directly removed from above. The matching edge correction auxiliary structure for the rolled plate uses a spring-floating design, ensuring the auxiliary roller is always elastically pressed against the side of the plate. This provides rigid constraint against axial movement and adapts to variations in plate thickness and surface unevenness, preventing surface scratches and edge indentations caused by rigid limiting. A hydraulic structure drives the upper pressure roller vertically, providing rolling pressure. The hydraulic station and control box enable electronic control adjustment of pressure and stroke. Each gantry is equipped with a hydraulic cylinder at its upper end, with the cylinder output end connected downwards to a hydraulic column. The lower end of the hydraulic column is fixedly connected to the upper end of the moving block. The moving block slides within the gantry's internal groove, and a convex shaft rotatably connects to the inside of the moving block. The hydraulic system drives the moving block to slide vertically along the gantry, thereby raising and lowering the upper pressure roller and adjusting the rolling gap and pressing amount. By installing a side edge correction auxiliary structure at the bottom of the extension shaft, two sets of auxiliary rollers are located at the lower ends of the upper pressure roller on both sides, with the roller surface perpendicular to the plate surface, forming a double-sided elastic limit.

[0021] (3) Two sets of auxiliary positioning mechanisms for forming the roll plate are symmetrically arranged at the front and rear of the base fixing frame, and the inner ends are connected to the gantry frame. They are used to radially limit and shape the rolled cylinder from the outer periphery. An arc-shaped multi-degree-of-freedom adjustment scheme is adopted. Multiple sets of shaft cylinders are fixed through the inside of the side plate, so that the auxiliary limiting roller shaft can rotate freely. The upper and lower ends of the inner side of the side plate are respectively hinged to the upper ends of the electric telescopic device one and the electric telescopic device two. The groove opened at the lower end of the side plate is movably connected to the upper end of the electric telescopic device three. The lower ends of the three sets of electric telescopic devices are all hinged to the front and rear end side walls of the gantry frame. Through the coordinated extension and retraction of the three sets of telescopic devices, the height, pitch angle and radial position of the side plate can be adjusted so that the auxiliary limiting roller shaft always fits against the outer wall of the cylinder. This system enables multi-degree-of-freedom adjustment of the height, angle, and radial position of the curved side plate, ensuring that the auxiliary limiting rollers remain in contact with the outer wall of the cylinder during the rolling process. This provides continuous circumferential constraint to the cylinder from both the front and rear sides, actively counteracting the springback stress and self-weight deformation of the sheet material. Roundness is simultaneously achieved during the rolling process. The traditional offline process of roundness correction after rolling is replaced by an online process of shaping during rolling, significantly reducing the workload of subsequent corrections and shortening the production cycle. At the same time, the rolling auxiliary limiting rollers and the cylinder experience rolling friction, which will not scratch the outer surface of the cylinder or hinder the continuous feeding and rolling of the cylinder, making it suitable for automated continuous production needs.

[0022] (4) The upper end face clamping and positioning mechanism of the rolled plate forming is installed at the upper end of the gantry frame at one end. It clamps and shapes the cylinder end from the inside and outside. It is the core mechanism for improving the accuracy of the end. The whole adopts an L-shaped transition frame and a double-layer structure design of "inner support and outer pressure". The integrated clamping scheme of inner support and outer pressure fundamentally solves the problem of end springback. The support roller shaft of the inner support structure provides rigid support from the inside of the cylinder to offset the inward springback stress. The arc-shaped conveyor belt of the outer pressure structure provides clamping force from the outside of the cylinder to offset the outward springback stress. The two work together to form a full circumferential shaping constraint on the end, which can reduce the amount of end springback and significantly improve the roundness and flatness of the end. The entire structure can be raised and lowered via an electro-hydraulic device. The extension of the inner support roller shaft can be adjusted via an electric push rod device, and the clamping force of the outer pressing structure can be adjusted via an electro-hydraulic device. It can adapt to the shaping of tower ends with different diameters and wall thicknesses. At the same time, the rolling support roller shaft and the conveyor belt can rotate synchronously with the cylinder, continuously providing shaping force throughout the rolling process without stopping for adjustment, thus realizing continuous online shaping. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall front upper view structure of the present invention; Figure 2 This is a schematic diagram of the overall rear lower view structure of the present invention; Figure 3 This is a partial structural diagram of the rear upper part of the present invention; Figure 4 This is a schematic diagram of the roll forming drive structure of the present invention; Figure 5 This is a schematic diagram of the disassembly and assembly structure of the upper pressure roller of the present invention; Figure 6 This is a schematic diagram of the auxiliary structure for correcting the side edge of the coil plate according to the present invention; Figure 7 This is a schematic diagram of the auxiliary support structure for the rotation of the lower pressure roller of the present invention; Figure 8 This is a schematic diagram of the auxiliary positioning mechanism for sheet forming according to the present invention; Figure 9 This is a partial side view of the auxiliary positioning mechanism for sheet forming according to the present invention. Figure 10 This is a schematic diagram of the upper end face clamping and positioning mechanism for the coil forming of the present invention; Figure 11 This is a partial structural diagram of the upper end face clamping and positioning mechanism for the plate forming of the present invention.

[0024] In the diagram: 1. Base fixing frame; 11. Liner plate; 12. Auxiliary support structure for the rotation of the lower pressure roller; 121. Support roller; 122. Movable rod; 123. Support plate; 2. Lower pressure roller; 21. Fixed gear; 211. Inner shaft; 22. Adapter gear; 221. Rotating shaft rod; 222. Support; 3. Upper pressure roller; 30. Side edge correction auxiliary structure of the coil plate; 301. Positioning block; 302. Connecting plate; 303. Movable frame; 304. Auxiliary roller; 305. Spring; 31. Extension shaft; 32. Connecting roller shaft; 33. Protruding shaft; 34. Connecting plate; 35. Locking bolt; 36. Sealing plate; 4. Gantry frame; 5. Auxiliary positioning mechanism for sheet forming; 51. Auxiliary limiting roller; 52. Side plate; 521. Groove; 53. Extension rod; 531. Shaft cylinder; 54. Electric telescopic device one; 55. Electric telescopic device two; 56. Electric telescopic device three; 6. Upper end face clamping and positioning mechanism for rolled plate forming; 61. Base plate; 62. Column; 63. Horizontal plate; 64. Electro-hydraulic device one; 641. Hydraulic rod one; 65. Auxiliary rod; 66. Transfer plate; 67. Inner support structure; 671. Electric push rod device; 672. Push rod; 673. Support roller shaft; 674. Limiting ring; 675. Protruding plate; 676. Connecting rod; 68. Outer pressing structure; 681. Transfer rod; 682. End plate; 683. Electro-hydraulic device two; 684. Hydraulic rod two; 685. Moving plate; 686. Horizontal bar; 687. Movable cylinder; 688. Conveyor belt; 7. Drive unit; 8. Hydraulic station; 81. Control box; 82. Hydraulic cylinder; 83. Hydraulic column; 84. Moving block. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-11 This invention provides a technical solution: a high-precision automatic plate rolling forming device for large wind turbine towers, comprising: The base fixing frame 1 has lining plates 11 welded to its lower inner end; Gantry frame 4 is fixedly installed at both ends inside the base fixing frame 1; The lower pressure roller 2 is rotatably connected between the front and rear ends of the gantry frame 4. The drive unit 7 is connected to the left side of the lower pressure roller 2 at the front end. The upper pressure roller 3 has two ends rotatably connected to the inside of the gantry frame 4, and both ends of the upper pressure roller 3 pass through the upper end of the gantry frame 4 and are connected to a hydraulic structure. The plate forming auxiliary positioning mechanism 5 is located near the front and rear of the base fixing frame 1, and the inner two ends of the plate forming auxiliary positioning mechanism 5 are connected to the gantry frame 4. The upper end face clamping and positioning mechanism 6 for plate forming is located at the upper end of one end of the gantry frame 4.

[0027] The base fixing frame 1 serves as the overall load-bearing base of the device, providing the installation foundation and structural support for all internal mechanisms such as the liner plate 11 and the gantry frame 4.

[0028] The liner 11 is welded to the lower end of the base fixing frame 1 to improve the local structural rigidity and is used to install the auxiliary support structure 12 for the rotation of the lower pressure roller. The gantry frame 4 is fixed to both ends of the base fixing frame 1 to form a portal-type load-bearing frame, which provides installation and guiding support for the lower pressure roller 2, the upper pressure roller 3 and auxiliary mechanisms. The lower pressure roller 2 is rotatably connected between the gantry frames 4 and works with the upper pressure roller 3 to extrude the sheet metal, providing the lower support surface for rolling and the power for feeding. The drive unit 7 is connected to the front lower pressure roller 2 and outputs rotational power for the rolling operation, driving the lower pressure roller 2 to rotate and feed the sheet metal. The upper pressure roller 3 is located above the lower pressure roller 2 and works with the lower pressure roller 2 to squeeze the sheet metal. The lower pressure is adjusted by a hydraulic structure to control the bending curvature of the sheet metal. The hydraulic structure drives the upper pressure roller 3 to rise and fall vertically, adjusting the rolling pressure and providing the upper pressure roller 3 with the extrusion force required for rolling. The sheet metal forming auxiliary positioning mechanism 5 is arranged on the front and rear sides of the base fixing frame 1, which radially limits the rolling cylinder from the outer periphery and assists in shaping. The sheet metal forming upper end face clamping and positioning mechanism 6 is located on the upper end of the gantry frame 4, which clamps and shapes the cylinder end from the inside and outside, suppressing the springback deformation of the end.

[0029] In a further improvement, fixed gears 21 are fixed at both ends of the lower pressure roller 2. An inner shaft 211 is connected to the left side of the lower pressure roller 2 at the front end through the fixed gear 21. The output end of the drive unit 7 is fixedly connected to the outer end of the inner shaft 211 by bolts. A transition gear 22 is meshed between the fixed gears 21 at the bottom. A rotating shaft 221 is connected through the interior of the transition gear 22. One end of the rotating shaft 221 is rotatably connected to the gantry frame 4, and the other end of the rotating shaft 221 is rotatably connected to the bracket 222. Fixed gears 21 are fixedly installed at both ends of the lower pressure rollers 2 and transmit power through meshing with the adapter gears 22 to achieve synchronous rotation of the two lower pressure rollers 2. The inner shaft 211 extends from the shaft end of the front lower pressure roller 2 and is rigidly connected to the output end of the drive unit 7 to transmit driving torque to the fixed gears 21. The adapter gears 22 mesh below the front and rear fixed gears 21 to ensure that the two lower pressure rollers 2 rotate synchronously and in the same direction. The rotating shaft rod 221 passes through and is fixed inside the adapter gear 22 to provide a rotation support shaft for the adapter gear 22. The bracket 222 rotates to support the outer end of the rotating shaft rod 221, improving the overall stability and rigidity of the transmission structure of the adapter gear 22.

[0030] In a further improvement, the upper pressure roller 3 is internally rotatably connected to an extension shaft 31, and a connecting roller shaft 32 is installed at the outer end of the extension shaft 31; Both the inner ends of the extension shaft 31 and the connecting roller shaft 32 are fixed with a mating plate 34, and the inner end of the mating plate 34 is fixed with a sealing plate 36. Locking bolts 35 are distributed around the circumference of the mating plate 34 through a threaded connection. A convex shaft 33 is fixedly provided at the outer end of the connecting roller shaft 32; The extension shaft 31 is connected to the end of the upper pressure roller 3, realizing the transition docking between the upper pressure roller 3 and the connecting roller shaft 32; the connecting roller shaft 32 is docked to the outer end of the extension shaft 31, serving as a rotating connection component between the upper pressure roller 3 and the moving block 84; the docking discs 34 are respectively located at the docking ends of the extension shaft 31 and the connecting roller shaft 32, and are locked by locking bolts 35 to achieve a rigid coaxial connection between the two shafts; the sealing disc 36 is located inside the docking disc 34 to ensure that the docking end faces of the extension shaft 31 and the connecting roller shaft 32 fit and seal, improving the coaxial docking accuracy; the locking bolts 35 are connected to the docking disc 34 along the circumference, locking and fixing the two sets of docking discs 34, realizing the detachable connection of the split structure of the upper pressure roller 3; the convex shaft 33 is fixed to the outer end of the connecting roller shaft 32 and inserted into the moving block 84 to realize the rotational assembly of the upper pressure roller 3 and the moving block 84.

[0031] In a further improvement, a movable block 84 is slidably connected inside the gantry frame 4, and a convex shaft 33 is connected through the interior of the movable block 84; The hydraulic structure includes a hydraulic station 8, a control box 81, a hydraulic cylinder 82, and a hydraulic column 83. The hydraulic station 8 and the control box 81 are installed on the upper left side of the base fixing frame 1, and the control box 81 is electrically connected to the hydraulic station 8. The hydraulic cylinders 82 are respectively installed on the upper end of the gantry 4. The hydraulic column 83 is connected through to the output end of the hydraulic cylinder 82 and is fixed on the upper end of the moving block 84. The movable block 84 is slidably connected inside the gantry frame 4, bearing the cam shaft 33 and the end of the upper pressure roller 3, driving the upper pressure roller 3 to rise and fall vertically along the gantry frame 4; the hydraulic station 8 provides a pressure oil source for the entire hydraulic system and provides hydraulic support for the output power of the hydraulic cylinder 82; the control box 81 is electrically connected to the hydraulic station 8, and electrically controls the pressure, stroke and action logic of the hydraulic system; the hydraulic cylinder 82 is installed on the upper end of the gantry frame 4, outputting linear driving force to drive the hydraulic column 83 to extend and retract; the hydraulic column 83 is connected between the output end of the hydraulic cylinder 82 and the movable block 84, transmitting driving force to drive the movable block 84 and the upper pressure roller 3 to rise and fall.

[0032] Further improvements include a roll plate side edge correction auxiliary structure 30 at the bottom of the extension shaft 31. The roll plate side edge correction auxiliary structure 30 includes a positioning block 301, a connecting plate 302, a movable frame 303, an auxiliary roller 304, and a spring 305. The positioning block 301 is fixed to the bottom of the extension shaft 31, the connecting plate 302 is fixed to the bottom of the positioning block 301, the movable frame 303 is U-shaped and passes through the interior of the connecting plate 302, the spring 305 is fixedly distributed between the inner side wall of the movable frame 303 and the connecting plate 302, and the auxiliary roller 304 is rotatably connected between the movable frames 303 and is located at the lower ends of both sides of the upper pressure roller 3. The side edge correction auxiliary structure 30 of the rolled plate is located at the bottom of the extension shaft 31 to elastically limit the side edge of the rolled plate and prevent the plate from running off-axis along the upper pressure roller 3. The positioning block 301 is fixed to the bottom of the extension shaft 31 to provide an installation positioning reference for the entire side edge correction auxiliary structure 30 of the rolled plate. The connecting plate 302 is fixed to the bottom of the positioning block 301 to provide an installation support base for the movable frame 303 and the spring 305. The movable frame 303 is installed in a U-shape through the connecting plate 302, carrying the auxiliary roller 304, and can float laterally to adapt to the elastic limit requirements. The auxiliary roller 304 is rotatably installed between the movable frames 303, rolling against the side edge of the plate to limit axial movement and prevent scratching the surface of the plate. The spring 305 is located between the inner wall of the movable frame 303 and the connecting plate 302 to provide elastic buffering force, realize floating limit, and adapt to the thickness fluctuation of the plate.

[0033] Further improvements include a lower pressure roller rotation auxiliary support structure 12 distributed at the upper end of the liner 11. The lower pressure roller rotation auxiliary support structure 12 includes a support roller 121 and a support plate 123. The support plate 123 is fixed to the upper end of the liner 11. A movable rod 122 is connected through the inside of the support roller 121. The movable rod 122 is rotatably connected to the upper end of the support plate 123. The auxiliary support structure 12 for rotating the lower pressure roller is arranged on the upper end of the liner plate 11, supporting the lower pressure roller 2 from multiple points at the bottom and reducing the deflection deformation of the long roller; the support roller 121 rolls against the bottom of the lower pressure roller 2, forming an auxiliary support for the lower pressure roller 2 and offsetting the bending load generated by the heavy pressure of the plate; the movable rod 122 passes through the interior of the support roller 121, providing a rotation support shaft for the support roller 121; the support plate 123 is fixed to the upper end of the liner plate 11, and the movable rod 122 is rotated to fix the installation position of the support roller 121.

[0034] Further improvements include an auxiliary positioning mechanism 5 for forming rolled plates, comprising an auxiliary limiting roller shaft 51, a side plate 52, an extension rod 53, an electric telescopic device 1 54, an electric telescopic device 2 55, and an electric telescopic device 3 56. The side plate 52 is an arc-shaped plate structure with a shaft cylinder 531 distributed through it. The extension rod 53 is fixed to the outer end of the auxiliary limiting roller shaft 51 and is rotatably connected through the shaft cylinder 531. The upper ends of the electric telescopic device 1 54 and the electric telescopic device 2 55 are respectively hinged to the upper and lower ends of the inner side of the side plate 52. The lower end of the side plate 52 is provided with a groove 521, and the upper end of the electric telescopic device 56 is movably connected to the inside of the groove 521. The lower ends of electric telescopic device 1 54, electric telescopic device 2 55 and electric telescopic device 3 56 are all hinged to the front and rear ends of the gantry frame 4. The auxiliary limiting roller shaft 51 rolls against the outer wall of the cylinder, forming a radial constraint on the cylinder, assisting in shaping and reducing springback deformation; the side plate 52 has an arc-shaped plate structure, supporting multiple sets of auxiliary limiting roller shafts 51, and adapting to the arc-shaped outer contour of the cylinder; the extension rod 53 is fixed to the outer end of the auxiliary limiting roller shaft 51 and inserted into the shaft cylinder 531 to realize the rotational installation of the auxiliary limiting roller shaft 51; the shaft cylinder 531 is fixed inside the side plate 52, providing a rotational support hole for the extension rod 53; the electric telescopic device 54 is hinged to the inner side of the side plate 52. The first end of the electric telescopic device 54 drives the adjustment of the radial position and pitch angle of the upper part of the side plate 52; the second electric telescopic device 55 is hinged to the lower end of the inner side of the side plate 52, driving the adjustment of the radial position and pitch angle of the lower part of the side plate 52; the groove 521 is opened at the lower end of the side plate 52, providing a movable connection space for the third electric telescopic device 56, which is adapted to the angle adjustment of the side plate 52; the upper end of the third electric telescopic device 56 is movably connected to the inside of the groove 521, and works with the first electric telescopic device 54 and the second electric telescopic device 55 to adjust the height and overall posture of the side plate 52.

[0035] Further improvements include a plate forming upper end face clamping and positioning mechanism 6 comprising a base plate 61, a column 62, a horizontal plate 63, an electro-hydraulic device 64, an auxiliary rod 65, a transition plate 66, an inner support structure 67, and an outer pressing structure 68. The base plate 61 is installed on the upper end of the gantry 4. The column 62 is fixedly distributed on the upper end of the base plate 61. The horizontal plate 63 is fixed on the upper end of the column 62. The electro-hydraulic device 64 is fixed at the bottom of the horizontal plate 63 and is connected upward through a hydraulic rod 641. The transition plate 66 is an L-shaped plate structure fixed at the upper end of the hydraulic rod 641. The auxiliary rod 65 is fixed at the lower end of the transition plate 66 and is slidably connected through the horizontal plate 63. The inner support structure 67 is connected through the interior of the transition plate 66. The outer pressing structure 68 is located on the upper end of the transition plate 66. The base plate 61 is installed on the upper surface of the gantry frame 4, providing a bottom mounting reference for the entire coil forming upper surface clamping and positioning mechanism 6; the column 62 is fixed to the upper end of the base plate 61, supporting the horizontal plate 63, forming a vertical mounting frame for the clamping mechanism; the horizontal plate 63 is fixed to the top of the column 62, providing an installation and guiding foundation for the electro-hydraulic device 64 and the auxiliary rod 65; the electro-hydraulic device 64 is fixed to the bottom of the horizontal plate 63, driving the adapter plate 66 to lift as a whole, adapting to cylinders of different diameters; the hydraulic rod 64... 1. Connect the electric hydraulic device 64 to the adapter plate 66 to transmit the lifting driving force; the auxiliary rod 65 is fixed to the lower end of the adapter plate 66 and slides through the horizontal plate 63 to ensure the stability of the adapter plate 66 during the lifting process; the adapter plate 66 is L-shaped and serves as a load-bearing base to integrate the inner support structure 67 and the outer pressing structure 68; the inner support structure 67 supports the inner wall from the inside of the cylinder to offset the inward rebound stress at the port; the outer pressing structure 68 presses the outer wall from the outside of the cylinder to offset the outward rebound stress at the port.

[0036] In a further improvement, the inner support structure 67 includes an electric push rod device 671, a push rod 672, and a support roller shaft 673. The electric push rod device 671 is fixedly distributed at the outer end of the adapter plate 66, the push rod 672 is connected through to the output end of the electric push rod device 671, and the support roller shaft 673 is rotatably connected to the outer end of the push rod 672. The push rod 672 is externally rotatably connected to a limit ring 674. A protrusion 675 is fixed at the lower end of the limit ring 674. A connecting rod 676 is connected between the inner end of the protrusion 675 and the adapter plate 66. The connecting rod 676 is a telescopic structure. An electric push rod device 671 is fixed to the outer end of the adapter plate 66, driving the push rod 672 to extend and retract, adjusting the radial position of the support roller shaft 673; the push rod 672 connects the electric push rod device 671 and the support roller shaft 673, transmitting linear thrust and adjusting the support position; the support roller shaft 673 is rotatably mounted on the outer end of the push rod 672, rolling against the inner wall of the cylinder, providing internal support without hindering the rotation of the cylinder; a limiting ring 674 is rotatably fitted onto the outside of the push rod 672, forming a radial constraint on the push rod 672, preventing the push rod 672 from deflecting after extension; a protruding plate 675 is fixed to the lower end of the limiting ring 674, connecting the connecting rod 676, transmitting radial support force; the connecting rod 676 is a telescopic structure, connecting the protruding plate 675 and the adapter plate 66, providing lateral support for the push rod 672 and improving support rigidity.

[0037] Specifically, the external pressing structure 68 includes a transition rod 681, an end plate 682, an electro-hydraulic device 683, a hydraulic rod 684, a movable plate 685, a crossbar 686, a movable cylinder 687, and a conveyor belt 688. The lower end of the transition rod 681 is fixed to the outer end of the transition plate 66, and the end plate 682 is fixed to the upper end of the transition rod 681. The second electro-hydraulic device 683 is fixed to the upper end of the end plate 682, the second hydraulic rod 684 is connected through the lower end of the second electro-hydraulic device 683, the moving plate 685 is fixed to the lower end of the second hydraulic rod 684, the crossbar 686 is fixedly distributed on the side of the moving plate 685 in an arc-shaped trajectory, the movable cylinder 687 is rotatably connected to the outer end of the crossbar 686, and the conveyor belt 688 is sleeved on the outside of the movable cylinder 687. The adapter rod 681 is fixed to the outer end of the adapter plate 66, supporting the end plate 682 and raising the installation height of the outer pressing structure 68; the end plate 682 is fixed to the upper end of the adapter rod 681, providing an installation reference for the second electro-hydraulic device 683; the second electro-hydraulic device 683 is fixed to the upper end of the end plate 682, driving the moving plate 685 to rise and fall, adjusting the magnitude of the external clamping force; the second hydraulic rod 684 connects the second electro-hydraulic device 683 and the moving plate 685, transmitting the clamping driving force; the moving plate 685 is fixed to... The lower end of hydraulic rod 684 supports the arc-shaped horizontal bar 686 and movable cylinder 687, transmitting clamping force. The horizontal bar 686 is fixed to the side of the moving plate 685 along the arc-shaped trajectory, providing installation support for the movable cylinder 687 and adapting to the arc surface of the cylinder. The movable cylinder 687 is rotatably installed on the outer end of the horizontal bar 686, supporting the conveyor belt 688 and enabling it to roll synchronously with the cylinder. The conveyor belt 688 is fitted onto the outside of the movable cylinder 687, forming an arc-shaped clamping surface that rolls and clamps against the outer wall of the cylinder, avoiding surface scratches.

[0038] Working principle: Based on the design diameter and plate wall thickness parameters of the wind turbine tower to be processed, the output pressure and stroke parameters of the hydraulic station 8 are set through the control box 81, driving the hydraulic cylinder 82 to drive the hydraulic column 83 and the moving block 84 to slide along the gantry 4, adjusting the initial roll gap between the upper pressure roller 3 and the lower pressure roller 2; simultaneously controlling the electric telescopic device 54, electric telescopic device 55, and electric telescopic device 56 of the plate forming auxiliary positioning mechanism 5 to coordinate telescopic movement, adjusting the height, pitch angle, and initial radial position of the arc-shaped side plate 52; controlling the electric hydraulic device 64 of the plate forming upper end face clamping and positioning mechanism 6 to drive the adapter plate 66 to rise and fall to the corresponding initial height, completing the initial position debugging of the entire equipment.

[0039] The steel plate to be rolled is hoisted onto the upper roller surface of the two lower pressure rollers 2 and pushed axially to the starting position of the rolling. The two sides of the plate are embedded into the inner side of the plate side edge correction auxiliary structure 30 below the upper pressure roller 3. The spring 305 pushes the movable frame 303 to drive the auxiliary roller 304 to elastically fit the side end face of the plate, completing the axial centering and positioning of the plate and eliminating the initial skew error of the feed. Start the drive unit 7, which drives the front lower pressure roller 2 and the fixed gear 21 to rotate through the inner shaft 211. The transmission is then carried by the meshing of the adapter gear 22, which drives the rear lower pressure roller 2 to rotate synchronously and in the same direction, so that the linear speed of the two lower pressure rollers 2 is completely consistent. At the same time, the hydraulic station 8 drives the hydraulic cylinder 82 to drive the upper pressure roller 3 to gradually press down to the set pressing amount, pre-bending the end of the plate. The lower pressure roller 2 continues to rotate, driving the plate to feed at a uniform speed, completing the initial rolling of the cylinder. As the sheet material is continuously fed into the continuous rolling stage, the positioning block 301 and connecting plate 302 of the side edge correction auxiliary structure 30 of the rolled sheet rise and fall synchronously with the upper pressure roller 3. The auxiliary roller 304 always elastically fits the side edge of the sheet material and rolls synchronously with the rolling feed, restricting the axial movement of the sheet material in real time. At the same time, the three sets of electric telescopic devices of the sheet material forming auxiliary positioning mechanism 5 are adjusted in real time according to the change of the rolling diameter, driving the side plate 52 to feed radially. The extension rod 53 and the shaft cylinder 531 support the auxiliary limiting roller shaft 51 to always fit the outer wall of the cylinder during the rolling process and roll, forming continuous radial constraint on the cylinder from the front and rear sides, actively offsetting the rebound stress and self-weight deformation of the sheet material, and completing the roundness shaping of the cylinder online. When the end of the rolled cylinder moves to the corresponding position of the clamping and positioning mechanism 6 on the upper end face of the rolled plate forming, the frame formed by the base plate 61, the column 62 and the horizontal plate 63 maintains structural stability. The electric hydraulic device 64 finely adjusts the height of the adapter plate 66 through the hydraulic rod 641, and the auxiliary rod 65 ensures smooth lifting and lowering, so that the inner support structure 67 and the outer pressing structure 68 are aligned with the cylinder end. The electric push rod device 671 drives the push rod 672 to extend radially, driving the support roller shaft 673 to fit against the inner wall of the cylinder to form the inner... The support, limiting ring 674, convex plate 675, and telescopic connecting rod 676 synchronously reinforce the push rod 672 laterally; at the same time, the end plate 682 at the upper end of the adapter rod 681 provides an installation reference for the external pressure drive. The second electro-hydraulic device 683 drives the second hydraulic rod 684 to move the moving plate 685 downward, so that the arc-shaped crossbars 686 and the conveyor belt 688 supported by the movable cylinder 687 press against the outer wall of the cylinder; the support roller shaft 673 and the conveyor belt 688 rotate synchronously with the cylinder, forming a full circumferential constraint of "internal support and external pressure", continuously suppressing the end rebound and ensuring the roundness and flatness accuracy of the end; Before the cylinder is rolled to the seam, the control box 81 controls the hydraulic station 8 to fine-tune the stroke of the hydraulic cylinder 82, and precisely adjusts the final pressing amount of the upper pressure roller 3; at the same time, the radial feed amount of the rolling plate forming auxiliary positioning mechanism 5 and the clamping force of the rolling plate forming upper end face clamping positioning mechanism 6 are finely adjusted to perform final pressing and shaping of the cylinder, and complete the high-precision rolling and shaping. After the rolling is completed, the drive unit 7 stops operating; the electric push rod device 671 drives the support roller shaft 673 to retract, and the electric hydraulic device 683 drives the moving plate 685 to move upward and reset, releasing the end clamping; the three sets of electric telescopic devices of the plate forming auxiliary positioning mechanism 5 retract synchronously, and the auxiliary limit roller shaft 51 disengages from the outer wall of the cylinder; the hydraulic cylinder 82 drives the upper pressure roller 3 to move upward to the unloading position; the locking bolt 35 on the docking plate 34 is removed, the extension shaft 31 is separated from the connecting roller shaft 32, the sealing plate 36 separates with the docking end face, the rotation constraint of one end of the upper pressure roller 3 is released, and the forming tower is lifted out from above the device, completing all plate rolling processes.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended technical solutions rather than the foregoing description, and thus all changes falling within the meaning and scope of equivalent elements of the technical solutions are intended to be included within the present invention.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision automatic plate rolling forming device for large wind turbine towers, characterized in that, include: The base fixing frame (1) has a liner plate (11) welded to the lower part of its interior. Gantry frame (4), the gantry frame (4) is fixedly installed at both ends inside the base fixing frame (1); The lower pressure roller (2) is rotatably connected between the front and rear ends of the gantry frame (4). The drive unit (7) is connected to the left side of the lower pressure roller (2) at the front end. The upper pressure roller (3) has two ends rotatably connected to the inside of the gantry frame (4), and the two ends of the upper pressure roller (3) are connected to the upper end of the gantry frame (4) by a hydraulic structure. A plate forming auxiliary positioning mechanism (5) is located near the front and rear of the base fixing frame (1), and the inner ends of the plate forming auxiliary positioning mechanism (5) are connected to the gantry frame (4). The upper end face clamping and positioning mechanism (6) for forming the roll plate is located at the upper end of one end of the gantry frame (4).

2. The high-precision automatic plate rolling forming device for large wind turbine towers according to claim 1, characterized in that: Both ends of the lower pressure roller (2) are fixed with fixed gears (21). The left side of the lower pressure roller (2) at the front end is connected to the inner shaft (211) through the fixed gear (21). The output end of the drive unit (7) is fixedly connected to the outer end of the inner shaft (211) by bolts. A transition gear (22) is meshed between the fixed gears (21) below. A rotating shaft (221) is connected through the interior of the transition gear (22). One end of the rotating shaft (221) is rotatably connected to the gantry frame (4), and the other end of the rotating shaft (221) is rotatably connected to a bracket (222).

3. The high-precision automatic plate rolling forming device for large wind turbine towers according to claim 1, characterized in that: The upper pressure roller (3) is rotatably connected to an extension shaft (31), and a connecting roller shaft (32) is installed at the outer end of the extension shaft (31). The inner ends of the extension shaft (31) and the connecting roller shaft (32) are both fixed with a mating plate (34), and the inner end of the mating plate (34) is fixed with a sealing plate (36). Locking bolts (35) are distributed around the circumference of the mating plate (34) through a threaded connection. A convex shaft (33) is fixed at the outer end of the connecting roller shaft (32).

4. The high-precision automatic plate rolling forming device for large wind turbine towers according to claim 3, characterized in that: The gantry frame (4) has a sliding block (84) inside, and the convex shaft (33) is connected through the inside of the sliding block (84); The hydraulic structure includes a hydraulic station (8), a control box (81), a hydraulic cylinder (82), and a hydraulic column (83). The hydraulic station (8) and the control box (81) are installed on the upper left side of the base fixing frame (1), and the control box (81) is electrically connected to the hydraulic station (8). The hydraulic cylinders (82) are respectively installed on the upper end of the gantry (4). The hydraulic column (83) is connected through the output end of the hydraulic cylinder (82). The hydraulic column (83) is fixed on the upper end of the moving block (84).

5. The high-precision automatic plate rolling forming device for large wind turbine towers according to claim 3, characterized in that: The bottom of the extension shaft (31) is provided with a side edge correction auxiliary structure (30). The side edge correction auxiliary structure (30) includes a positioning block (301), a connecting plate (302), a movable frame (303), an auxiliary roller (304), and a spring (305). The positioning block (301) is fixed to the bottom of the extension shaft (31), the connecting plate (302) is fixed to the bottom of the positioning block (301), the movable frame (303) is U-shaped and passes through the interior of the connecting plate (302), the spring (305) is fixedly distributed between the inner side wall of the movable frame (303) and the connecting plate (302), and the auxiliary roller (304) is rotatably connected between the movable frame (303) and the upper pressure roller (3). The auxiliary roller (304) is located at the lower ends of both sides of the upper pressure roller (3).

6. The high-precision automatic plate rolling forming device for large wind turbine towers according to claim 1, characterized in that: The upper end of the liner (11) is provided with a lower pressure roller rotation auxiliary support structure (12). The lower pressure roller rotation auxiliary support structure (12) includes a support roller (121) and a support plate (123). The support plate (123) is fixed to the upper end of the liner (11). A movable rod (122) is connected through the inside of the support roller (121). The movable rod (122) is rotatably connected to the upper end of the support plate (123).

7. The high-precision automatic plate rolling forming device for large wind turbine towers according to claim 1, characterized in that: The roll forming auxiliary positioning mechanism (5) includes an auxiliary limiting roller (51), a side plate (52), an extension rod (53), an electric telescopic device one (54), an electric telescopic device two (55), and an electric telescopic device three (56). The side plate (52) is an arc-shaped plate structure and has a shaft cylinder (531) distributed inside. The extension rod (53) is fixed to the outer end of the auxiliary limiting roller (51) and is rotatably connected inside the shaft cylinder (531). The upper ends of the electric telescopic device one (54) and the electric telescopic device two (55) are respectively hinged to the upper and lower ends of the inner side of the side plate (52). The lower end of the side plate (52) is provided with a groove (521), and the upper end of the electric telescopic device three (56) is movably connected to the inside of the groove (521); The lower ends of the electric telescopic device one (54), electric telescopic device two (55) and electric telescopic device three (56) are all hinged to the front and rear ends of the gantry frame (4).

8. The high-precision automatic plate rolling forming device for large wind turbine towers according to claim 1, characterized in that: The upper end face clamping and positioning mechanism (6) for the rolled plate forming includes a base plate (61), a column (62), a horizontal plate (63), an electric hydraulic device (64), an auxiliary rod (65), a transition plate (66), an inner support structure (67), and an outer pressing structure (68). The base plate (61) is installed on the upper end of the gantry (4), the column (62) is fixedly distributed on the upper end of the base plate (61), and the horizontal plate (63) is fixedly installed on the upper end of the column (62). Hydraulic device 1 (64) is fixed at the bottom of the horizontal plate (63) and connected to hydraulic rod 1 (641) through it. The adapter plate (66) is an L-shaped plate structure fixed at the upper end of the hydraulic rod 1 (641). The auxiliary rod (65) is fixed at the lower end of the adapter plate (66) and is slidably connected to the horizontal plate (63). The inner support structure (67) is connected through the interior of the adapter plate (66). The outer pressing structure (68) is located at the upper end of the adapter plate (66).

9. A high-precision automatic plate rolling forming device for large wind turbine towers according to claim 8, characterized in that: The inner support structure (67) includes an electric push rod device (671), a push rod (672) and a support roller shaft (673). The electric push rod device (671) is fixedly distributed at the outer end of the adapter plate (66). The push rod (672) is connected through to the output end of the electric push rod device (671). The support roller shaft (673) is rotatably connected to the outer end of the push rod (672). The push rod (672) is externally rotatably connected to a limiting ring (674), and a protrusion (675) is fixedly provided at the lower end of the limiting ring (674). A connecting rod (676) is connected between the inner end of the protrusion (675) and the adapter plate (66). The connecting rod (676) is a telescopic structure.

10. A high-precision automatic plate rolling forming device for large wind turbine towers according to claim 9, characterized in that: The external pressing structure (68) includes a transition rod (681), an end plate (682), an electric hydraulic device (683), a hydraulic rod (684), a moving plate (685), a crossbar (686), a movable cylinder (687), and a conveyor belt (688). The lower end of the transition rod (681) is fixed to the outer end of the transition plate (66), and the end plate (682) is fixed to the upper end of the transition rod (681). The second electro-hydraulic device (683) is fixed to the upper end of the end plate (682), the second hydraulic rod (684) is connected through to the lower end of the second electro-hydraulic device (683), the moving plate (685) is fixed to the lower end of the second hydraulic rod (684), the crossbar (686) is fixedly distributed on the side of the moving plate (685) in an arc trajectory, the movable cylinder (687) is rotatably connected to the outer end of the crossbar (686), and the conveyor belt (688) is sleeved on the outside of the movable cylinder (687).

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