A device and a method for continuous rolling of small vertical axis wind turbine blades

Abstract

The application discloses a kind of equipment of continuous rolling vertical axis small fan blade, it is related to fan blade manufacturing equipment technical field, including horizontal rolling component, vertical rolling component, drive component, horizontal rolling component includes first support piece, upper rolling piece, lower rolling piece, horizontal rolling passage;Vertical rolling component includes second support piece, outer side rolling piece, inner side rolling piece, vertical rolling passage;Vertical rolling component is located between two groups of adjacent horizontal rolling component;Outer side rolling piece, inner side rolling piece are located in the two sides of upper rolling piece and lower rolling piece;Drive component includes driving piece, transmission piece, speed reducer;By designing the shape of a plurality of groups of rolling mill group rolling roller corresponding to target fan blade pass forming section line, the optimal shape of each pass can be obtained for plate in rolling process and enter next group, so as to obtain complete pass deformation, so that plate can obtain consistent with the curvature of roll surface after passing, complete the processing of fan blade.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade manufacturing equipment technology, specifically to a device for continuously rolling small vertical-axis wind turbine blades. Background Technology

[0002] With the accelerated transformation of the global energy structure, distributed wind power development has become a strategic direction for the efficient utilization of wind energy resources in remote areas. Vertical axis small wind turbines (VAWTs), with their significant advantages such as ease of installation, all-wind-direction adaptive capability (no yaw system required), low operating noise (<35dB), and compact structure, have demonstrated irreplaceable application value in low-wind-speed, multi-wind-direction, and complex terrain scenarios such as small towns and mountainous areas, becoming an ideal technological carrier for tapping the potential of fragmented wind energy.

[0003] As the core aerodynamic component that converts wind energy into mechanical energy, the structural integrity, aerodynamic efficiency, and manufacturing cost of wind turbine blades directly determine the annual power generation, service life, and economic return of the entire turbine. However, current mainstream manufacturing processes have fundamental flaws: Casting: This method not only faces bottlenecks such as high mold development costs (accounting for 35%-45% of blade production costs) and long single-piece molding cycles (≥72 hours), but also suffers from uncontrollable melt solidification processes that lead to the formation of micron-sized pores inside the blade. Actual measurement data shows that these defects reduce blade fatigue strength by 40%-60%, significantly shorten service life (typically 8-10 years), and cause an annual power generation efficiency degradation rate of 7%-15%. Machining: Although it can achieve dimensional accuracy of ±0.05mm, the material utilization rate is less than 50%, and it requires multiple milling / grinding processes, which increases the production cost by 2-3 times compared to casting.

[0004] Rolling technology could have overcome the above limitations—it boasts advantages such as high material utilization (>90%), high production efficiency (minutes / piece), and continuous grain flow lines, which could significantly improve blade fatigue strength and aerodynamic consistency. However, existing rolling mill equipment is limited by rigid roll system structure and planar forming principle, making it impossible to achieve precise and continuous deformation of the curved surface unique to vertical axis blades. Summary of the Invention

[0005] The main objective of this invention is to provide a device for continuously rolling small vertical-axis wind turbine blades, which solves the problems that occur during the processing of wind turbine blades.

[0006] To achieve the above objectives, the present invention provides an apparatus for continuously rolling vertical-axis small wind turbine blades, comprising: A horizontal rolling assembly includes a first support member, an upper rolling member and a lower rolling member rotatably disposed on the first support member at intervals; the upper rolling member and the lower rolling member are horizontally disposed and have gaps between them to form a horizontal rolling channel; the outer diameter of the upper rolling member decreases from the middle to both ends; the outer diameter of the lower rolling member increases from the middle to both ends. A vertical rolling assembly includes a second support member, an outer rolling member and an inner rolling member rotatably disposed on the second support member at intervals; both the first support member and the second support member are provided with fixing members; the outer rolling member and the inner rolling member are vertically arranged and have gaps between them to form a vertical rolling channel; the outer diameter of the outer rolling member increases from the middle to both ends; the outer diameter of the inner rolling member decreases from the middle to both ends. The horizontal rolling assembly and the vertical rolling assembly are arranged in multiple groups along the same straight line; the vertical rolling assembly is located between two adjacent groups of horizontal rolling assemblies; the projections of the outer rolling piece and the inner rolling piece on the horizontal plane are located on both sides of the upper rolling piece and the lower rolling piece; The drive assembly includes a drive component and a transmission component connected to the drive component; a speed reduction component is provided between the drive component and the transmission component; the transmission component is connected to the lower rolled piece.

[0007] As a further improvement of the present invention, the first support member includes a first support frame; the first support frame is provided with a first connecting base plate; the second support member includes a second support frame; the second support frame is provided with a second connecting base plate; the fixing member includes a fixing column disposed on the first connecting base plate and the second connecting base plate.

[0008] As a further improvement of the present invention, the upper rolling member includes an upper connecting shaft rotatably connected to the first support frame and an upper rolling roll fixedly connected to the upper connecting shaft; the upper rolling roll is located in the middle of the upper connecting shaft.

[0009] As a further improvement of the present invention, the lower rolling part includes a lower connecting shaft rotatably connected to the first support frame and a lower rolling roll fixedly connected to the lower connecting shaft; the lower rolling roll is located in the middle of the lower connecting shaft.

[0010] As a further improvement of the present invention, the outer rolling element includes an outer connecting shaft rotatably mounted on a second support frame and an outer rolling roll fixedly connected to the outer connecting shaft; the outer rolling roll is located in the middle of the outer connecting shaft.

[0011] As a further improvement of the present invention, the inner rolled part includes an inner connecting shaft rotatably connected to the second support frame and an inner rolling roll fixedly connected to the inner connecting shaft; the inner rolling roll is located at the end of the inner connecting shaft.

[0012] As a further improvement of the present invention, the driving component includes a drive motor; the reducing component includes a reducer; the drive motor and the reducer are connected by a first coupling; a gearbox is provided on the reducer by a second coupling; the transmission component includes a transmission shaft connected to the gearbox; the transmission shaft is connected to the lower rolled piece.

[0013] As a further improvement of the present invention, the multiple sets of horizontal rolling channels are located at the same horizontal height; the multiple sets of vertical rolling channels are located at the same horizontal height.

[0014] The beneficial effects of this invention are reflected in: 1. By designing multiple sets of rolling mill rolls to correspond to the shape of the forming section profile of the target wind turbine blade in each pass, the plate can obtain the optimal shape of each pass during the rolling process and enter the next unit.

[0015] 2. The distance L between the outlet roller surface and the inlet roller surface of adjacent units is designed as L = (1.2 ~ 1.5) ×D, where D is the maximum width or maximum height of the plate after rolling (take the larger of the two values). This allows the plate to pass smoothly through each unit during rolling and transmission, ensuring smooth plate flow and preventing wrinkling and cracking. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an equipment for continuously rolling vertical shaft small fan blades according to the present invention; Figure 2 This is a schematic diagram of the structure of the first horizontal rolling mill unit of the equipment for continuously rolling vertical axis small wind turbine blades according to the present invention; Figure 3 This is a schematic diagram of the second horizontal rolling mill unit structure of an equipment for continuously rolling vertical axis small wind turbine blades according to the present invention; Figure 4 This is a schematic diagram of the third horizontal rolling mill unit of an apparatus for continuously rolling vertical axis small wind turbine blades according to the present invention. Figure 5 This is a schematic diagram of the fourth horizontal rolling mill unit of an apparatus for continuously rolling vertical axis small wind turbine blades according to the present invention. Figure 6 This is a schematic diagram of the fifth horizontal rolling mill unit of an apparatus for continuously rolling vertical axis small wind turbine blades according to the present invention. Figure 7 This is a schematic diagram of the first vertical rolling mill unit structure of an apparatus for continuously rolling vertical shaft small wind turbine blades according to the present invention; Figure 8 This is a schematic diagram of the structure of the second vertical rolling mill unit of the equipment for continuously rolling vertical axis small wind turbine blades according to the present invention; Figure 9This is a schematic diagram of the third vertical rolling mill unit of the equipment for continuously rolling vertical shaft small wind turbine blades according to the present invention. Figure 10 This is a schematic diagram of the drive assembly structure of an apparatus for continuously rolling vertical shaft small wind turbine blades according to the present invention. Explanation of reference numerals in the attached figures: 1. First support component; 101. First support frame; 102. First connecting base plate; 2. Upper rolled part; 201. Upper connecting shaft; 202. Upper rolling roll; 3. Lower rolled part; 301. Lower connecting shaft; 302. Lower rolling roll; 4. Horizontal rolling channel; 5. Second support component; 501. Second support frame; 502. Second connecting base plate; 6. Outer rolled part; 601. Outer connecting shaft; 602. Outer rolling roll; 7. Inner rolled part; 701. Inner connecting shaft; 702. Inner rolling roll; 8. Fixing component; 9. Vertical rolling channel; 10. First bearing; 11. Second bearing; 12. Third bearing; 13. Fourth bearing; 14. Drive motor; 15. Reducer; 16. First coupling; 17. Second coupling; 18. Gearbox; 19. Transmission shaft; 20. Third coupling. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this invention. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0018] See Figure 1 , 10 The present invention provides an apparatus for continuously rolling vertical shaft small wind turbine blades, comprising a horizontal rolling assembly, a vertical rolling assembly, and a drive assembly.

[0019] The horizontal rolling assembly includes a first support member 1, an upper rolling member 2 and a lower rolling member 3 rotatably and spaced apart on the first support member 1. The upper rolling member 2 and the lower rolling member 3 are horizontally arranged and have gaps between them to form a horizontal rolling channel 4. The outer diameter of the upper rolling member 2 decreases from the middle to both ends, and the outer diameter of the lower rolling member 3 increases from the middle to both ends. The vertical rolling assembly includes a second support member 5, an outer rolling member 6 and an inner rolling member 7 rotatably and spaced apart on the second support member 5. Fixing members 8 are provided on both the first support member 1 and the second support member 5. The outer rolling member 6 and the inner rolling member 7 are fixed. The rolled pieces 7 are vertically arranged and have gaps between them to form a vertical rolling channel 9; the outer diameter of the outer rolled piece 6 increases from the middle to both ends, and the outer diameter of the inner rolled piece 7 decreases from the middle to both ends; multiple sets of horizontal rolling assemblies and vertical rolling assemblies are arranged at intervals along the same straight line, and the vertical rolling assemblies are located between two adjacent sets of horizontal rolling assemblies; the projections of the outer rolled piece 6 and the inner rolled piece 7 on the horizontal plane are located on both sides of the upper rolled piece 2 and the lower rolled piece 3; the drive assembly includes a drive component and a transmission component connected to the drive component, a speed reduction component is provided between the drive component and the transmission component, and the transmission component is connected to the lower rolled piece 3.

[0020] Further, see Figure 2-6 The first support member 1 includes a first support frame 101, on which a first connecting base plate 102 is provided; the second support member 5 includes a second support frame 501, on which a second connecting base plate 502 is provided; the fixing member 8 includes fixing columns provided on the first connecting base plate 102 and the second connecting base plate 502.

[0021] Preferably, the first support frame 101 and the second support frame 501 are both "door" shaped frame structures, and the first connecting base plate 102 and the second connecting base plate 502 are respectively provided with fixing holes, which are fixedly inserted into the fixing holes.

[0022] Preferably, it also includes a connecting base plate, and the first support frame 101 and the second support frame 501 cylindrical fixing columns pass through the fixing holes and are threadedly connected to the connecting base plate.

[0023] Further, see Figure 2-6 The upper rolled part 2 includes an upper connecting shaft 201 rotatably connected to the first support frame 101 and an upper rolling roll 202 fixedly connected to the upper connecting shaft 201. The upper rolling roll 202 is located in the middle of the upper connecting shaft 201.

[0024] Preferably, mounting holes are provided on both sides of the first support frame 101, and a first bearing 10 is provided in the mounting holes. The upper connecting shaft 201 is fixedly connected to the inner ring of the first bearing 10.

[0025] Preferably, the upper connecting shaft 201 is divided into two sections and is fixedly connected to the first bearings 10 at both ends respectively, and the ends of the two upper connecting shafts 201 away from the first bearings 10 are fixedly connected to the upper rolling roll 202.

[0026] Preferably, the upper rolling roll 202 has an ellipsoidal structure, and the outer diameter of the upper rolling roll 202 decreases from the middle to both ends.

[0027] Further, see Figure 2-6 The lower rolled piece 3 includes a lower connecting shaft 301 rotatably connected to the first support frame 101 and a lower rolling roll 302 fixedly connected to the lower connecting shaft 301. The lower rolling roll 302 is located in the middle of the lower connecting shaft 301.

[0028] Preferably, the first support frame 101 has a second bearing 11 located below the first bearing 10 on both side walls, and the end of the lower connecting shaft 301 is fixedly connected to the lower rolling roll 302.

[0029] Preferably, the lower connecting shaft 301 is divided into two sections and is fixedly connected to the second bearings 11 at both ends respectively, and the ends of the two lower connecting shafts 301 away from the second bearings 11 are fixedly connected to the lower rolling roll 302.

[0030] Preferably, the lower rolling roll 302 has a concave "U" shaped cross-section, and the outer diameter of the lower rolling roll 302 increases from the middle to both ends.

[0031] Further, see Figure 7-9 The outer rolling element 6 includes an outer connecting shaft 601 rotatably mounted on the second support frame 501 and an outer rolling roll 602 fixedly connected to the outer connecting shaft 601. The outer rolling roll 602 is located in the middle of the outer connecting shaft 601.

[0032] Preferably, the top and bottom of the second support frame 501 are respectively provided with a third bearing 12, and the end of the outer connecting shaft 601 is fixedly connected to the outer rolling roll.

[0033] Preferably, the outer connecting shaft 601 is divided into two sections and is fixedly connected to the third bearings 12 at both ends, and the ends of the two outer connecting shafts 601 away from the third bearings 12 are fixedly connected to the outer rolling rolls 602.

[0034] Preferably, the cross-section of the outer rolling roll is a concave "U" shape, and the outer diameter of the outer rolling roll 602 increases from the middle to both ends.

[0035] Further, see Figure 7-9 The inner rolled part 7 includes an inner connecting shaft 701 rotatably connected to the second support frame 501 and an inner rolling roll 702 fixedly connected to the inner connecting shaft 701. The inner rolling roll 702 is located at the end of the inner connecting shaft 701.

[0036] Preferably, a fourth bearing 13 is provided on the top of the second support frame 501, and the inner connecting shaft 701 is fixedly connected to the inner ring of the fourth bearing 13.

[0037] Preferably, the inner rolling roll 702 has an ellipsoidal structure, and the outer diameter of the inner rolling roll 702 decreases from the middle to both ends.

[0038] In the above configuration, the sheet material for manufacturing the wind turbine blades is rolled by the upper rolling roll 202 and the lower rolling roll 302 on the horizontal rolling assembly, and then moves toward the remaining horizontal rolling assembly and vertical rolling assembly located behind. The upper rolling roll 202 and the lower rolling roll 302 first roll the middle part of the sheet material, and after being driven by the horizontal rolling assembly, it enters the vertical rolling assembly located behind. The vertical rolling assembly rolls both ends of the sheet material, and continuously reduces the thickness of the middle part of the sheet material through the horizontal rolling channel 4 of different widths, and continuously reduces the thickness of both ends of the sheet material through the vertical rolling channel.

[0039] Specifically as follows: A total of five horizontal rolling mills and three vertical rolling mills are set up. The three vertical rolling mills are located behind the three horizontal rolling mills. The upper rolling mill of the first horizontal rolling mill has a length of 1080.2 mm and a maximum radius of approximately 318 mm. It is fixed at a distance of 485.1 mm from the top of the stand. The lower rolling roll 302 has a length of 1183.4 mm and a maximum radius of 316.7 mm. The gap between the upper rolling roll 202 and the lower rolling roll 302 is 2 mm. The roll surfaces of the upper rolling roll 202 and the lower rolling roll 302 have a shape that is steep at both ends and gentle in the middle. The inclination angle of the roll surface curve changes from the middle to the end to 1°, 5.4°, 9.9°, 17.3°, 26°, 41.3°, and 50.2°. The upper rolling roll 202 of the second horizontal rolling mill is 1012.2 mm long and has a maximum radius of 388 mm. The lower rolling roll 302 is 1116 mm long and has a maximum radius of 387.6 mm. It is fixed at a distance of 555.1 mm from the top of the frame. The gap between the upper rolling roll 202 and the lower rolling roll 302 is 2 mm. The roll surfaces of the upper rolling roll 202 and the lower rolling roll 302 are the same as those of the first mill, with steep ends and a gentle middle. However, due to the larger deformation per pass, the inclination angle from the middle to the end changes to 1°, 5.4°, 8.4°, 11.9°, 17.7°, 24.3°, 28.9°, 38°, 42.3°, 57.9°, and 69.7°. The upper rolling roll 202 of the third horizontal rolling mill is 531.4 mm long and has a maximum radius of 184.7 mm. It is fixed at a distance of 618.4 mm from the top of the frame. The lower rolling roll 302 is 531.4 mm long and has a maximum radius of 183.1 mm. The gap between the upper rolling roll 202 and the lower rolling roll 302 is 2 mm. Compared with the first and second mills, its end curvature is greater. The inclination angle of its roll surface arc changes from the middle to the end to 1°, 3.4°, 6.1°, 7.2°, and 8.6°. The first vertical rolling mill is located behind the third horizontal rolling mill. The outer rolling roll 602 on the first vertical rolling mill has a maximum radius of 250 mm, a minimum radius of 129.6 mm, a roll height of 390.1 mm, and is 302.3 mm away from the inner wall of the first support frame 101. The inner rolling roll 702 has a maximum radius of 139.4 mm, a roll height of 295.6 mm, and its roll surface arc angle varies as follows: 20.9°, 25.1°, 30.5°, 37°, 43.6°, 55.7°, 16.8°, 96.3°, 110.8°, 126.8°, 142.5°, 155°. The upper rolling roll 202 of the fourth horizontal rolling mill is 556.4 mm long and has a maximum radius of 250 mm. It is fixed at a distance of 553.1 mm from the top of the frame. The lower rolling roll 302 is also 556.4 mm long and has a maximum radius of 250 mm. The gap between the upper rolling roll 202 and the lower rolling roll 302 is 2 mm. The inclination angle of the roll surface curve changes from the middle to the end at 0.6°, 2.6°, 6.2°, 7.9°, 9.8°, 11.1°, 12°, 13.8°, and 16°. The second vertical rolling mill is located behind the fourth horizontal rolling mill. The outer rolling roll 602 of the second vertical rolling mill has a maximum radius of 200 mm, a minimum radius of 149.6 mm, a roll height of 238.7 mm, and is 307.1 mm away from the left stand. The inner rolling roll 702 has a maximum radius of 65.5 mm, a roll height of 141.4 mm, and its roll surface arc angle varies as follows: 27.8°, 34.2°, 40.2°, 52.2°, 71.9°, 90.1°, 104.3°, 114.9°, 127.1°, 136.8°, 147.7°, 155.5°. The upper rolling roll 202 of the fifth horizontal rolling mill is 556.4 mm long and has a maximum radius of 250 mm. It is fixed at a distance of 601.8 mm from the top of the frame. The lower rolling roll 302 is 556.4 mm long and has a maximum radius of 248.3 mm. The gap between the upper rolling roll 202 and the lower rolling roll 302 is 2 mm. The inclination angle of the roll surface varies from 1.6°, 3.9°, 6°, 7.5°, 8.5°, 9.9°, 10.5°, 11.4°, 12.6°, to 15.6°. The third vertical rolling mill is located behind the fifth horizontal rolling mill. The outer rolling roll 602 on the third vertical rolling mill has a maximum radius of 250 mm, a minimum radius of 161 mm, a roll height of 231.3 mm, and is 348.1 mm away from the left frame. The inner rolling roll 702 has a maximum radius of 106.3 mm, a roll height of 130.9 mm, and its roll surface arc angle varies as follows: 20.2°, 26.1°, 32.4°, 41.1°, 49.6°, 58.9°, 69.8°, 82.1°, 100.3°, 121.4°, 141°, 156.1°, 166.7°, and 176.1°. The above are the parameters of each mill when rolling 2000×1044×2 mm plates.

[0040] In one embodiment, see Figure 10 The driving component includes a drive motor 14, the reduction component includes a reducer 15, the drive motor 14 and the reducer 15 are connected by a first coupling 16, the reducer 15 is provided with a gearbox 18 through a second coupling 17, and the transmission component includes a transmission shaft 19 connected to the gearbox 18, the transmission shaft 19 is connected to the lower rolled piece 3.

[0041] Preferably, the drive motor 14, reducer 15, first coupling 16, second coupling 17, and gearbox 18 are all existing structures, and the reducer 15 is a gear reducer 15.

[0042] Preferably, the drive assembly is provided in three groups, and the drive shafts 19 on the three groups of drive assemblies are respectively connected to the lower connecting shafts 301 on the first horizontal rolling mill, the third horizontal rolling mill, and the fifth horizontal rolling mill via a third coupling 20.

[0043] By designing the transmission ratio i (i = motor speed / roll speed) and motor power of the drive equipment, the rolling force F1 provided by the horizontal axis roll of the first unit is ensured to meet the following condition: F1 ≥ μ × (G + R2 + R3 + R4) + P2 + P3 + P4 + P5 (μ is the friction coefficient between the plate and the roll, G is the weight of the plate, R2,3,4 are the rolling resistances applied to the plate by the second, third, and fourth rolls, and P2,3,4,5 are the minimum thrust required for the plate to pass through the gap of the second, third, fourth, and fifth units). This ensures that the plate has sufficient force after being output from the first unit to pass through the unit without a drive equipment connection to the next power input, preventing it from getting stuck in the gap due to insufficient power after output.

[0044] The five sets of horizontal rolling mills and the three sets of horizontal rolling mills are all fixed in the designated positions using anchor bolts; the five rolling mills are fixedly arranged according to the distance L = (1.2 ~ 1.5) × D (D is the maximum width or maximum height of the plate after rolling, whichever is larger) between the outlet roll surface and the inlet roll surface of the adjacent mills, and all rolling surfaces are at the same horizontal height, and the first, third, and fifth horizontal rolling mills are connected to the gearbox 18 in the drive equipment through the drive shaft 19 to achieve transmission.

[0045] When using this invention, the power supply to the drive motor 14 and reducer 15 is turned on. The drive motor 14 starts running and outputs power. After the speed and torque are adjusted by the reducer 15, the power is transmitted to the gearbox 18 through the first coupling and the second coupling. The gearbox 18 then transmits the power to the first horizontal rolling mill through the transmission shaft 19, driving it to run and starting the first horizontal rolling mill. After the operator feeds the sheet into the first horizontal rolling mill, the sheet moves with the operation of the first horizontal rolling mill due to the friction between the roll surfaces. During the continuous rolling process, the sheet is subjected to the specific design curvature of the upper rolling roll 202 and the lower rolling roll 302 (corresponding to the first pass forming section profile of the target wind turbine blade), and slowly moves towards the second horizontal rolling mill at a stable speed, successfully completing the first rolling stage in the forming process, and obtaining a sheet shape that meets the design curvature requirements of the first pass.

[0046] When the sheet metal reaches the second processing stage, since the second horizontal rolling mill is not connected to the drive equipment, but instead adopts a shaft-fed transmission method, that is, relying on the conveying thrust of the sheet metal when it is transported from the first horizontal rolling mill to the second horizontal rolling mill, the upper rolling roll 202 and the lower rolling roll 302 on the second horizontal rolling mill rotate to perform rolling. After the sheet metal contacts the upper rolling roll 202 and the lower rolling roll 302, it continues to pass through the second horizontal rolling mill by relying on the pushing force of the first horizontal rolling mill. In this process, after the sheet metal contacts the upper rolling roll 202 and the lower rolling roll 302 of the second horizontal rolling mill with a specific design curvature (corresponding to the second-pass forming section profile of the target wind turbine blade), it obtains a sheet metal shape that meets the design curvature requirements of the second pass.

[0047] Subsequently, the sheet metal is smoothly transferred to the third horizontal rolling mill until it contacts the upper rolling roll 202 and lower rolling roll 302 of the third horizontal rolling mill, thus completing the second rolling pass. After passing through the second horizontal rolling mill, the sheet metal arrives at the third horizontal rolling mill. At this point, because the third horizontal rolling mill is closely connected to the drive equipment, the increased power input allows the sheet metal to be quickly bitten into and begin rolling when it contacts the horizontal axis rolling rolls of the third horizontal rolling mill. Subsequently, under the power input from the motor, the sheet metal is rolled with the upper rolling roll 202 and lower rolling roll 302 of the third horizontal rolling mill at a specific design curvature (corresponding to the center section profile of the third pass of the target wind turbine blade); then the sheet metal is guided to the first vertical horizontal rolling mill, where the outer rolling roll 602 and inner rolling roll 702 of the first vertical horizontal rolling mill are rolled with a specific design curvature (corresponding to the end section profile of the third pass of the target wind turbine blade), resulting in a sheet metal shape that meets the design curvature requirements of the third pass, thus completing the third pass rolling.

[0048] Throughout the process, the sheet metal is transported at a stable speed between the equipment, successfully completing the third rolling pass until it reaches the fourth horizontal rolling mill, where the fourth rolling deformation begins. When the sheet metal arrives at the fourth horizontal rolling mill, since this mill is not equipped with a drive unit, its transmission method remains consistent with the second horizontal rolling mill. It still employs a follow-shaft transmission method, relying on the conveying thrust of the sheet metal as it arrives at the fourth horizontal rolling mill to rotate the rolls and perform rolling, until it is sent to the fifth horizontal rolling mill.

[0049] During this process, the deformation of the sheet metal is divided into two parts. First, under the action of the specific design curvature of the upper rolling roll 202 and the lower rolling roll 302 of the fourth horizontal rolling mill (corresponding to the center section profile of the fourth pass of the target wind turbine blade), and then under the action of the specific design curvature of the outer rolling roll 602 and the inner rolling roll 702 on the second vertical horizontal rolling mill (corresponding to the end section profile of the fourth pass of the target wind turbine blade), the sheet metal shape that meets the design curvature requirements of the fourth pass is obtained, and the fourth pass rolling operation is successfully completed.

[0050] When the sheet metal arrives at the fifth horizontal rolling mill, the equipment gains a new power source due to the close connection between the fifth horizontal rolling mill and the drive equipment. Upon contact with the sheet metal, the fifth horizontal rolling mill easily bites into it and begins rolling. The sheet metal is conveyed at a stable speed, first passing through the upper rolling roll 202 and lower rolling roll 302 of the fifth horizontal rolling mill with a specific design curvature (corresponding to the fifth pass center section profile of the target wind turbine blade), and then passing through the outer rolling roll 602 and inner rolling roll 702 of the third vertical horizontal rolling mill with a specific design curvature (corresponding to the fifth pass end section profile of the target wind turbine blade) until the entire sheet metal passes through, completing the final rolling and shaping that meets the design profile requirements of the wind turbine blade. In the five-pass rolling process, the curvature increases from small to large. The first and second passes involve small deformations, so the first and second mills complete the deformation in one pass; therefore, each mill has only one horizontal axis rolling unit. The third, fourth, and fifth passes involve larger deformations, requiring the deformation process to be completed in two parts. Therefore, the third, fourth, and fifth horizontal rolling mills use two rolling units—a horizontal axis roll unit and a vertical axis roll unit—to roll and deform the center and end parts of the sheet metal respectively, thus achieving complete pass deformation and ensuring that the sheet metal has a curvature consistent with the roll surface after passing through. After the sheet metal is output, it is received by workers and subjected to quality inspection. If the sheet metal is qualified, the rolling of the entire blade is completed; if defects are found, the sheet metal is sent back to the first horizontal rolling mill unit for re-rolling until it meets the standard.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for continuously rolling vertical-axis small wind turbine blades, characterized in that: include: A horizontal rolling assembly includes a first support member (1), an upper rolling member (2) and a lower rolling member (3) rotatably and spaced apart on the first support member (1); the upper rolling member (2) and the lower rolling member (3) are horizontally arranged and have gaps between them to form a horizontal rolling channel (4); the outer diameter of the upper rolling member (2) decreases from the middle to both ends; the outer diameter of the lower rolling member (3) increases from the middle to both ends; A vertical rolling assembly includes a second support member (5), an outer rolling member (6) and an inner rolling member (7) that are rotatably and spaced apart on the second support member (5); a fixing member (8) is provided on both the first support member (1) and the second support member (5); the outer rolling member (6) and the inner rolling member (7) are vertically arranged and have gaps between them to form a vertical rolling channel (9); the outer diameter of the outer rolling member (6) increases from the middle to both ends; the outer diameter of the inner rolling member (7) decreases from the middle to both ends; The horizontal rolling assembly and the vertical rolling assembly are arranged in multiple groups along the same straight line; the vertical rolling assembly is located between two adjacent groups of horizontal rolling assemblies; the projections of the outer rolling piece (6) and the inner rolling piece (7) on the horizontal plane are located on both sides of the upper rolling piece (2) and the lower rolling piece (3); The drive assembly includes a drive component and a transmission component connected to the drive component; a speed reduction component is provided between the drive component and the transmission component; the transmission component is connected to the lower rolled piece (3).

2. The equipment for continuously rolling vertical-axis small wind turbine blades according to claim 1, characterized in that: The first support member (1) includes a first support frame (101); a first connecting base plate (102) is provided on the first support frame (101); the second support member (5) includes a second support frame (501); a second connecting base plate (502) is provided on the second support frame (501); the fixing member (8) includes fixing columns provided on the first connecting base plate (102) and the second connecting base plate (502).

3. The equipment for continuously rolling vertical axis small wind turbine blades according to claim 2, characterized in that: The upper rolled part (2) includes an upper connecting shaft (201) rotatably connected to the first support frame (101) and an upper rolling roll (202) fixedly connected to the upper connecting shaft (201); the upper rolling roll (202) is located in the middle of the upper connecting shaft (201).

4. The equipment for continuously rolling vertical axis small wind turbine blades according to claim 3, characterized in that: The lower rolled part (3) includes a lower connecting shaft (301) rotatably connected to the first support frame (101) and a lower rolling roll (302) fixedly connected to the lower connecting shaft (301); the lower rolling roll (302) is located in the middle of the lower connecting shaft (301).

5. The equipment for continuously rolling vertical axis small wind turbine blades according to claim 4, characterized in that: The outer rolled part (6) includes an outer connecting shaft (601) rotatably mounted on a second support frame (501) and an outer rolling roll (602) fixedly connected to the outer connecting shaft (601); the outer rolling roll (602) is located in the middle of the outer connecting shaft (601).

6. The equipment for continuously rolling vertical axis small wind turbine blades according to claim 5, characterized in that: The inner rolled part (7) includes an inner connecting shaft (701) rotatably connected to the second support frame (501) and an inner rolling roll (702) fixedly connected to the inner connecting shaft (701); the inner rolling roll (702) is located at the end of the inner connecting shaft (701).

7. The equipment for continuously rolling vertical-axis small wind turbine blades according to claim 6, characterized in that: The driving component includes a drive motor (14); the reducing component includes a reducer (15); the drive motor (14) and the reducer (15) are connected by a first coupling (16); the reducer (15) is provided with a gearbox (18) via a second coupling (17); the transmission component includes a transmission shaft (19) connected to the gearbox (18); the transmission shaft (19) is connected to the lower rolled piece (3).

8. The equipment for continuously rolling vertical axis small wind turbine blades according to claim 7, characterized in that: The multiple sets of horizontal rolling channels (4) are located at the same horizontal height; the multiple sets of vertical rolling channels (9) are located at the same horizontal height.

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