Equipment for continuously rolling vertical-axis small fan blade and operation method

Abstract

The invention discloses equipment for continuously rolling a vertical-axis small fan blade, and relates to the technical field of fan blade manufacturing equipment.The equipment comprises a horizontal rolling assembly, a vertical rolling assembly and a driving assembly, and the horizontal rolling assembly comprises a first supporting piece, an upper rolling piece, a lower rolling piece and a horizontal rolling channel; the vertical rolling assembly comprises a second supporting piece, an outer side rolling piece, an inner side rolling piece and a vertical rolling channel. The vertical rolling assemblies are located between every two adjacent horizontal rolling assemblies. The outer side rolled piece and the inner side rolled piece are located on the two sides of the upper rolled piece and the lower rolled piece; the driving assembly comprises a driving part, a transmission part and a speed reduction part. By designing the shapes, corresponding to the target fan blade pass forming section molded line, of the rollers of the multiple rolling units, the optimal shape of each pass can be obtained in the rolling process of a plate, the plate enters the next unit, and therefore complete pass deformation is obtained, the radian consistent with that of the roller surface can be obtained after the plate passes, and machining of the fan blade is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan blade manufacturing equipment, in particular to a device for continuously rolling a vertical axis small fan blade. BACKGROUND

[0002] With the acceleration of global energy structure transformation, distributed wind power development has become a strategic direction for efficient utilization of wind energy resources in remote areas. Vertical axis small wind turbine (VAWT) has irreplaceable application value in low wind speed, multi-directional complex terrain scenes such as small towns and mountainous areas due to its convenient installation, full wind direction self-adaptive ability (no need for yaw system), low running noise (<35dB) and compact structure, etc. It has become an ideal technical carrier for tapping the potential of fragmented wind energy.

[0003] The fan blade, as the core aerodynamic component for converting wind energy into mechanical energy, its structural integrity, aerodynamic efficiency and manufacturing cost directly determine the annual power generation, service life and economic return rate of the whole machine. However, the current mainstream manufacturing process has fundamental defects: Casting method: not only faces the bottleneck of high mold development cost (accounting for 35%-45% of blade production cost) and long single-piece forming cycle (≥72 hours), but also causes micron-sized pore groups in the blade due to uncontrollable melt solidification process. Actual measurement data shows that such defects reduce the fatigue strength of the blade by 40%-60%, significantly shorten the service life (typical value 8-10 years), and cause the annual power generation efficiency to decay by 7%-15%; Mechanical processing method: although it can achieve ±0.05mm level of size accuracy, the material utilization rate is less than 50%, and it needs to go through multiple milling / grinding processes, resulting in a 2-3 times increase in production cost compared with the casting method.

[0004] Rolling process can break through the above limitations - it has the advantages of high material utilization rate (>90%), high production efficiency (minutes per piece), continuous grain flow lines, etc., which can significantly improve the fatigue strength and aerodynamic consistency of the blade. However, the existing rolling mill equipment is limited by the rigid roller structure and the principle of plane forming, and cannot realize the precise continuous deformation of the unique curved surface of the vertical axis blade. SUMMARY

[0005] The main purpose of the present application is to provide a device for continuously rolling a vertical axis small fan blade, which solves the problems in the process of fan blade processing.

[0006] To achieve the above purpose, the present application provides a device for continuously rolling a vertical axis small fan blade, which comprises: The horizontal rolling assembly comprises a first support, upper and lower rolling parts rotatably and spacedly arranged on the first support; the upper and lower rolling parts are horizontally arranged and have a gap therebetween to form a horizontal rolling channel; the outer diameter of the upper rolling part decreases from the middle part to the two ends; and the outer diameter of the lower rolling part increases from the middle part to the two ends. The vertical rolling assembly comprises a second support, outer and inner rolling parts rotatably and spacedly arranged on the second support; the first support and the second support are both provided with fixing parts; the outer and inner rolling parts are vertically arranged and have a gap therebetween to form a vertical rolling channel; the outer diameter of the outer rolling part increases from the middle part to the two ends; and the outer diameter of the inner rolling part decreases from the middle part to the two ends. The horizontal rolling assembly and the vertical rolling assembly are spacedly arranged along the same line; the vertical rolling assembly is located between two adjacent horizontal rolling assemblies; and the projections of the outer and inner rolling parts on the horizontal plane are located on both sides of the upper and lower rolling parts. The driving assembly comprises a driving part and a transmission part connected with the driving part; a speed reducer is arranged between the driving part and the transmission part; and the transmission part is connected with the lower rolling part.

[0007] As a further improvement of the present application, the first support comprises a first support frame; the first support frame is provided with a first connecting bottom plate; the second support comprises a second support frame; the second support frame is provided with a second connecting bottom plate; and the fixing parts comprise fixing columns arranged on the first connecting bottom plate and the second connecting bottom plate.

[0008] As a further improvement of the present application, the upper rolling part comprises an upper connecting shaft rotatably connected with the first support frame and an upper rolling roller fixedly connected with the upper connecting shaft; and the upper rolling roller is located at the middle part of the upper connecting shaft.

[0009] As a further improvement of the present application, the lower rolling part comprises a lower connecting shaft rotatably connected with the first support frame and a lower rolling roller fixedly connected with the lower connecting shaft; and the lower rolling roller is located at the middle part of the lower connecting shaft.

[0010] As a further improvement of the present application, the outer rolling part comprises an outer connecting shaft rotatably arranged on the second support frame and an outer rolling roller fixedly connected with the outer connecting shaft; and the outer rolling roller is located at the middle part of the outer connecting shaft.

[0011] As a further improvement of the present application, the inner rolling part comprises an inner connecting shaft rotatably connected with the second support frame and an inner rolling roller fixedly connected with the inner connecting shaft; and the inner rolling roller is located at the end of the inner connecting shaft.

[0012] As a further improvement of the present application, the driving member comprises a driving motor; the speed reducer comprises a speed reducer; the driving motor is connected with the speed reducer through a first connecting shaft; the speed reducer is provided with a gear box through a second connecting shaft; the transmission member comprises a transmission shaft connected with the gear box; the transmission shaft is connected with the lower rolling member.

[0013] As a further improvement of the present application, 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 the present application are embodied in: 1. By designing multiple sets of rolling mill groups corresponding to the shape of the target fan blade pass forming section profile, the plate can obtain the optimal shape of each pass during rolling and enter the next group.

[0015] 2. By designing the distance L between the exit roll surface and the entrance roll surface of adjacent groups as L = (1.2 ~ 1.5) × D, wherein D is the maximum width or maximum height of the plate after rolling (taking the larger value), the plate can smoothly pass through each group during rolling and transmission, and the plate flow is stable and does not wrinkle or crack. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 2 It is a schematic diagram of the structure of the first horizontal rolling group of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 3 It is a schematic diagram of the structure of the second horizontal rolling group of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 4 It is a schematic diagram of the structure of the third horizontal rolling group of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 5 It is a schematic diagram of the structure of the fourth horizontal rolling group of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 6 It is a schematic diagram of the structure of the fifth horizontal rolling group of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 7 It is a schematic diagram of the structure of the first vertical rolling group of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 8 It is a schematic diagram of the structure of the second vertical rolling group of the equipment for continuously rolling small vertical shaft fan blades of the present application; Figure 9Figure 3 is a structural schematic diagram of a third vertical rolling unit of the equipment for continuously rolling a small vertical-axis fan blade according to the present application; Figure 10 Figure 4 is a structural schematic diagram of a driving assembly of the equipment for continuously rolling a small vertical-axis fan blade according to the present application; Legend of reference signs: 1, first support; 101, first support frame; 102, first connecting bottom plate; 2, upper rolling part; 201, upper connecting shaft; 202, upper rolling roller; 3, lower rolling part; 301, lower connecting shaft; 302, lower rolling roller; 4, horizontal rolling channel; 5, second support; 501, second support frame; 502, second connecting bottom plate; 6, outer side rolling part; 601, outer side connecting shaft; 602, outer side rolling roller; 7, inner side rolling part; 701, inner side connecting shaft; 702, inner side rolling roller; 8, fixing part; 9, vertical rolling channel; 10, first bearing; 11, second bearing; 12, third bearing; 13, fourth bearing; 14, driving motor; 15, speed reducer; 16, first coupling; 17, second coupling; 18, gear box; 19, transmission shaft; 20, third coupling. DETAILED DESCRIPTION

[0017] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Reference should be made to Figure 1 , 10 The equipment for continuously rolling a small vertical-axis fan blade according to the present application comprises a horizontal rolling assembly, a vertical rolling assembly and a driving assembly.

[0019] The horizontal rolling assembly comprises a first support 1, an upper rolling piece 2 and a lower rolling piece 3 rotatably and spacedly arranged on the first support 1, the upper rolling piece 2 and the lower rolling piece 3 are horizontally arranged and have a gap therebetween to form a horizontal rolling channel 4, the outer diameter of the upper rolling piece 2 decreases from the middle part to the two ends, and the outer diameter of the lower rolling piece 3 increases from the middle part to the two ends; the vertical rolling assembly comprises a second support 5, an outer rolling piece 6 and an inner rolling piece 7 rotatably and spacedly arranged on the second support 5, the first support 1 and the second support 5 are each provided with a fixing piece 8, the outer rolling piece 6 and the inner rolling piece 7 are vertically arranged and have a gap therebetween to form a vertical rolling channel 9, the outer diameter of the outer rolling piece 6 increases from the middle part to the two ends, and the outer diameter of the inner rolling piece 7 decreases from the middle part to the two ends; the horizontal rolling assembly and the vertical rolling assembly are spacedly arranged in multiple groups along the same line, and the vertical rolling assembly is located between the two adjacent horizontal rolling assemblies; the projection of the outer rolling piece 6 and the inner rolling piece 7 on the horizontal plane is located on the two sides of the upper rolling piece 2 and the lower rolling piece 3; the driving assembly comprises a driving piece and a transmission piece connected with the driving piece, a speed reducer is arranged between the driving piece and the transmission piece, and the transmission piece is connected with the lower rolling piece 3.

[0020] Further, referring to Figures 2-6 , the first support 1 comprises a first support frame 101, and the first support frame 101 is provided with a first connecting bottom plate 102; the second support 5 comprises a second support frame 501, and the second support frame 501 is provided with a second connecting bottom plate 502; the fixing piece 8 comprises a fixing column arranged on the first connecting bottom plate 102 and the second connecting bottom plate 502.

[0021] Preferably, the first support frame 101 and the second support frame 501 are both in the shape of a door-shaped frame structure, the first connecting bottom plate 102 and the second connecting bottom plate 502 are respectively provided with fixing holes, and the fixing columns are fixedly arranged in the fixing holes.

[0022] Preferably, the first support frame 101 and the second support frame 501 are both in the shape of a door-shaped frame structure, the first connecting bottom plate 102 and the second connecting bottom plate 502 are respectively provided with fixing holes, and the fixing columns are fixedly arranged in the fixing holes.

[0023] Further, referring to Figures 2-6 , the upper rolling piece 2 comprises an upper connecting shaft 201 rotatably connected with the first support frame 101 and an upper rolling roller 202 fixedly connected with the upper connecting shaft 201, and the upper rolling roller 202 is located at the middle part of the upper connecting shaft 201.

[0024] Preferably, the two side walls of the first support frame 101 are respectively provided with mounting holes, the mounting holes are provided with first bearings 10, and the upper connecting shaft 201 is fixedly connected with the inner ring of the first bearings 10.

[0025] Preferably, the upper connecting shaft 201 is divided into two sections and fixedly connected with the first bearings 10 at both ends, and the end of the two sections of the upper connecting shaft 201 away from the first bearings 10 is fixedly connected with the upper rolling roller 202.

[0026] Preferably, the upper rolling roller 202 is in an ellipsoidal structure, and the outer diameter of the upper rolling roller 202 decreases from the middle part to both ends.

[0027] Further, referring to Figures 2-6 , the lower rolling part 3 comprises a lower connecting shaft 301 rotatably connected with the first support frame 101, and a lower rolling roller 302 fixedly connected with the lower connecting shaft 301, and the lower rolling roller 302 is located at the middle part of the lower connecting shaft 301.

[0028] Preferably, the second bearings 11 are arranged on both side walls of the first support frame 101 below the first bearings 10, and the end of the lower connecting shaft 301 is fixedly connected with the lower rolling roller 302.

[0029] Preferably, the lower connecting shaft 301 is divided into two sections and fixedly connected with the second bearings 11 at both ends, and the end of the two sections of the lower connecting shaft 301 away from the second bearings 11 is fixedly connected with the lower rolling roller 302.

[0030] Preferably, the cross section of the lower rolling roller 302 is in a concave “U” shape structure, and the outer diameter of the lower rolling roller 302 increases from the middle part to both ends.

[0031] Further, referring to Figures 7-9 , the outer rolling part 6 comprises an outer connecting shaft 601 rotatably arranged on the second support frame 501, and an outer rolling roller 602 fixedly connected with the outer connecting shaft 601, and the outer rolling roller 602 is located at the middle part of the outer connecting shaft 601.

[0032] Preferably, the third bearings 12 are arranged at the top end and the bottom end of the second support frame 501 respectively, and the end of the outer connecting shaft 601 is fixedly connected with the outer rolling roller.

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

[0034] Preferably, the cross section of the outer rolling roller is in a concave “U” shape structure, and the outer diameter of the outer rolling roller 602 increases from the middle part to both ends.

[0035] Further, referring to Figures 7-9 , the inner rolling part 7 comprises an inner connecting shaft 701 rotatably connected with the second support frame 501, and an inner rolling roller 702 fixedly connected with the inner connecting shaft 701, and the inner rolling roller 702 is located at the end of the inner connecting shaft 701.

[0036] Preferably, the fourth bearing 13 is arranged on the top end of the second support frame 501, and the inner side connecting shaft 701 is fixedly connected with the inner ring of the fourth bearing 13.

[0037] Preferably, the inner side rolling roller 702 is in an ellipsoid structure, and the outer diameter of the inner side rolling roller 702 decreases from the middle part to the two ends.

[0038] In the above arrangement, the manufacturing plate of the fan blade moves towards the remaining horizontal rolling assemblies and the vertical rolling assembly located at the rear after being rolled by the upper rolling roller 202 and the lower rolling roller 302 on the horizontal rolling assembly. The upper rolling roller 202 and the lower rolling roller 302 first roll the middle part of the plate. After the transmission of the horizontal rolling assembly, the plate enters the vertical rolling assembly located at the rear. The vertical rolling assembly rolls the two ends of the plate. The thickness of the middle part of the plate is continuously reduced through the horizontal rolling channels 4 of different widths, and the thickness of the two ends of the plate is continuously reduced through the vertical rolling channels.

[0039] Specifically as follows: Five groups of horizontal rolling assemblies and three groups of vertical rolling assemblies are arranged. The three groups of vertical rolling assemblies are located behind the three groups of horizontal rolling assemblies. The upper rolling roller 202 of the first horizontal rolling assembly is 1080.2 mm long, and the maximum radius is about 318 mm. The upper rolling roller 202 is fixed at a position 485.1 mm away from the upper part of the rack. The lower rolling roller 302 is 1183.4 mm long, and the maximum radius is 316.7 mm. The gap between the upper rolling roller 202 and the lower rolling roller 302 is 2 mm. The roll surfaces of the upper rolling roller 202 and the lower rolling roller 302 are shaped like steep ends and gentle middle. The inclination angles of the roll surfaces from the middle to the ends are 1°, 5.4°, 9.9°, 17.3°, 26°, 41.3°, and 50.2°. The upper rolling roller 202 of the second horizontal rolling assembly is 1012.2 mm long, and the maximum radius is 388 mm. The lower rolling roller 302 is 1116 mm long, and the maximum radius is 387.6 mm. The lower rolling roller 302 is fixed at a position 555.1 mm away from the upper part of the rack. The gap between the upper rolling roller 202 and the lower rolling roller 302 is 2 mm. The roll surfaces of the upper rolling roller 202 and the lower rolling roller 302 are shaped like steep ends and gentle middle, which is consistent with the first assembly. However, the inclination angles of the roll surfaces from the middle to the ends are 1°, 5.4°, 8.4°, 11.9°, 17.7°, 24.3°, 28.9°, 38°, 42.3°, 57.9°, and 69.7° due to the larger deformation. The upper rolling roller 202 of the third horizontal rolling mill group is 531.4 mm long, the maximum radius is 184.7 mm, is fixed at 618.4 mm from the upper part of the frame, the lower rolling roller 302 is 531.4 mm long, the maximum radius is 183.1 mm, the gap between the upper rolling roller 202 and the lower rolling roller 302 is 2 mm, the bending degree of the end part is larger than that of the first and second mill groups, and the inclination angle of the roller surface arc changes from the middle to the end part to be 1°, 3.4°, 6.1°, 7.2°, and 8.6°; The first vertical rolling mill group is located behind the third horizontal rolling mill group, the outer side rolling roller 602 of the first vertical rolling mill group has a maximum radius of 250 mm, a minimum radius of 129.6 mm, a roller body height of 390.1 mm, and a distance of 302.3 mm from the inner wall of the first support frame 101, the inner side rolling roller 702 has a maximum radius of 139.4 mm, a roller body height of 295.6 mm, and an inclination angle change of the roller surface arc of 20.9°, 25.1°, 30.5°, 37°, 43.6°, 55.7°, 16.8°, 96.3°, 110.8°, 126.8°, 142.5°, and 155°; The upper rolling roller 202 of the fourth horizontal rolling mill group is 556.4 mm long, the maximum radius is 250 mm, is fixed at 553.1 mm from the upper part of the frame, the lower rolling roller 302 is 556.4 mm long, the maximum radius is 250 mm, the gap between the upper rolling roller 202 and the lower rolling roller 302 is 2 mm, and the inclination angle of the roller surface arc changes from the middle to the end part to be 0.6°, 2.6°, 6.2°, 7.9°, 9.8°, 11.1°, 12°, 13.8°, and 16°, The second vertical rolling mill group is located behind the fourth horizontal rolling mill group, the outer side rolling roller 602 of the second vertical rolling mill group has a maximum radius of 200 mm, a minimum radius of 149.6 mm, a roller body height of 238.7 mm, and a distance of 307.1 mm from the left frame, the inner side rolling roller 702 has a maximum radius of 65.5 mm, a roller body height of 141.4 mm, and an inclination angle change of the roller surface arc of 27.8°, 34.2°, 40.2°, 52.2°, 71.9°, 90.1°, 104.3°, 114.9°, 127.1°, 136.8°, 147.7°, and 155.5°; The upper rolling roller 202 of the fifth horizontal rolling mill group is 556.4 mm long, the maximum radius is 250 mm, is fixed at 601.8 mm from the upper part of the frame, the lower rolling roller 302 is 556.4 mm long, the maximum radius is 248.3 mm, the gap between the upper rolling roller 202 and the lower rolling roller 302 is 2 mm, and the inclination angle of the roller surface arc changes from the middle to the end part to be 1.6°, 3.9°, 6°, 7.5°, 8.5°, 9.9°, 10.5°, 11.4°, 12.6°, and 15.6°; The third vertical rolling mill group is located behind the fifth horizontal rolling mill group. The outer rolling roller 602 on the third vertical rolling mill group has a maximum radius of 250 mm and a minimum radius of 161 mm, a roller body height of 231.3 mm, and a distance from the left side frame of 348.1 mm. The inner rolling roller 702 has a maximum radius of 106.3 mm and a roller body height of 130.9 mm. The roller face arc line inclination changes by 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 parameters are for rolling a 2000*1044*2 mm plate.

[0040] In an embodiment, referring to Figure 10 The driving member includes a driving motor 14, and the reduction member includes a reduction gear 15. The driving motor 14 is connected to the reduction gear 15 through a first connecting shaft 16. The reduction gear 15 is provided with a gear box 18 through a second connecting shaft 17. The transmission member includes a transmission shaft 19 connected to the gear box 18. The transmission shaft 19 is connected to the lower rolling member 3.

[0041] Preferably, the driving motor 14, the reduction gear 15, the first connecting shaft 16, the second connecting shaft 17, and the gear box 18 are all existing structures. The reduction gear 15 is a gear reduction gear 15.

[0042] Preferably, three sets of driving assemblies are provided. The transmission shafts 19 on the three sets of driving assemblies are respectively connected to the lower connecting shafts 301 on the first horizontal rolling mill group, the third horizontal rolling mill group, and the fifth horizontal rolling mill group through a third connecting shaft 20.

[0043] By designing the transmission ratio i (i = motor speed / roller speed) and the motor power of the driving device, it is ensured that the rolling force F1 provided by the first group of horizontal shaft rollers satisfies F1 ≥ μ × (G + R2 + R3 + R4) + P2 + P3 + P4+ P5 (μ is the friction coefficient between the plate and the roller, G is the weight of the plate, R2, 3, 4 are the rolling resistances applied by the second, third, and fourth groups of rollers to the plate, and P2, 3, 4, 5 are the minimum thrust forces required for the plate to pass through the rolling gaps of the second, third, fourth, and fifth groups of rollers), so that the plate has enough force after being output from the first group to pass through the groups without connected driving devices to the next power input group, so as not to be stuck in the rolling gap due to insufficient power after output.

[0044] The five groups of horizontal rolling mill units and the three groups of horizontal rolling mill units are fixed in the designated positions by using anchor bolts; the five rolling mill units are fixed and arranged according to the spacing L between the exit roll surface and the entrance roll surface of adjacent mill units, L = (1.2 ~ 1.5) × D (D is the maximum width or the maximum height of the plate after rolling, and the larger one is taken), and the rolling surfaces are at the same horizontal height, and the first horizontal rolling mill unit, the third horizontal rolling mill unit and the fifth horizontal rolling mill unit are connected with the gear box 18 in the driving device through the transmission shaft 19 to realize transmission.

[0045] When the present application is used, the power supply of the driving motor 14 and the reducer 15 is started, the driving motor 14 starts to operate and output power, after the speed and torque are adjusted through the reducer 15, the power is transmitted to the gear box 18 through the first coupling and the second coupling, and the gear box 18 transmits the power to the first horizontal rolling mill unit through the transmission shaft 19, drives the first horizontal rolling mill unit to operate, and makes the first horizontal rolling mill unit start to work. After the staff sends the plate into the first horizontal rolling mill unit, the plate will move with the first horizontal rolling mill unit through the friction force between the roll surfaces, and the plate will slowly move to the second horizontal rolling mill unit at a stable speed under the action of the specific designed arc (corresponding to the first pass forming section profile of the target fan blade) of the upper rolling roller 202 and the lower rolling roller 302 in the continuous rolling process, and successfully completes the first rolling link in the forming process, and obtains the plate shape meeting the first pass design arc requirement.

[0046] When the plate reaches the second pass processing link, the second horizontal rolling mill unit is not connected with the driving device, but adopts the shaft transmission mode, that is, relies on the conveying thrust of the plate from the first horizontal rolling mill unit to the second horizontal rolling mill unit, so that the upper rolling roller 202 and the lower rolling roller 302 on the second horizontal rolling mill unit rotate to roll. After the plate contacts with the upper rolling roller 202 and the lower rolling roller 302, it continues to pass through the second horizontal rolling mill unit relying on the pushing force of the first horizontal rolling mill unit. In this process, the plate contacts with the specific designed arc (corresponding to the second pass forming section profile of the target fan blade) of the upper rolling roller 202 and the lower rolling roller 302 of the second horizontal rolling mill unit, and obtains the plate shape meeting the second pass design arc requirement.

[0047] Subsequently, the plate is smoothly transmitted to the third horizontal rolling mill unit until it is in contact with the upper rolling roller 202 and the lower rolling roller 302 of the third horizontal rolling mill unit, and the second pass rolling is completed. After the plate passes through the second horizontal rolling mill unit, it reaches the third horizontal rolling mill unit. At this time, since the third horizontal rolling mill unit is closely connected with the driving device, the newly added power input enables the plate to be quickly bitten and start rolling when it contacts the horizontal shaft roller group of the third horizontal rolling mill unit. Subsequently, the plate is rolled by the upper rolling roller 202 and the lower rolling roller 302 of the third horizontal rolling mill unit under the action of the power input by the motor, with a specific designed arc (corresponding to the third pass central section profile of the target fan blade); then the plate is guided to the first vertical horizontal rolling mill unit, so as to obtain the specific designed arc (corresponding to the third pass end section profile of the target fan blade) of the outer rolling roller 602 and the inner rolling roller 702 on the first vertical horizontal rolling mill unit, and obtain the plate shape meeting the third pass designed arc requirement, that is, the third pass rolling is completed.

[0048] In the whole process, the plate is transmitted between the devices at a stable speed, and the third pass rolling is successfully completed until it reaches the fourth horizontal rolling mill unit and starts the fourth pass rolling deformation. When the plate reaches the fourth horizontal rolling mill unit, since the mill unit is not equipped with a driving device, its transmission mode remains consistent with that of the second horizontal rolling mill unit, and the shaft transmission mode is still adopted, that is, the transmission thrust of the plate when it is conveyed from the third horizontal rolling mill unit to the fourth horizontal rolling mill unit is relied on to make the fourth mill roller rotate and thus roll, until it is sent to the fifth horizontal rolling mill unit.

[0049] In this process, the deformation of the plate also has two parts, first, under the action of the specific designed arc (corresponding to the fourth pass central section profile of the target fan blade) of the upper rolling roller 202 and the lower rolling roller 302 of the fourth horizontal rolling mill unit, and then under the action of the specific designed arc (corresponding to the fourth pass end section profile of the target fan blade) of the outer rolling roller 602 and the inner rolling roller 702 on the second vertical horizontal rolling mill unit, the plate shape meeting the fourth pass designed arc requirement is obtained, and the fourth pass rolling operation is successfully completed.

[0050] When the plate reaches the fifth horizontal rolling mill unit, the equipment obtains a new power source due to the close connection between the fifth horizontal rolling mill unit and the driving device. When the fifth horizontal rolling mill unit contacts the plate, it easily bites into and starts rolling the plate, which is conveyed at a stable speed, first through the upper rolling roller 202 and the lower rolling roller 302 of the fifth horizontal rolling mill unit with a specific designed arc (corresponding to the fifth pass central section profile of the target wind turbine blade), and then through the outer rolling roller 602 and the inner rolling roller 702 of the third vertical horizontal rolling mill unit with a specific designed arc (corresponding to the fifth pass end section profile of the target wind turbine blade), until the whole plate passes through completely, and the rolling shaping in accordance with the design profile requirements of the wind turbine blade is completed. During the rolling process in the five passes, the arc is gradually increased from small to large. The first and second passes have small deformation, so the first and second mill units complete the deformation once, so the mill units only contain one horizontal shaft rolling group. The third, fourth and fifth passes have large deformation, so the third, fourth and fifth horizontal rolling mill units complete the deformation process in two parts by using the horizontal shaft rolling roller group and the vertical shaft rolling roller group to roll the center part and the end part of the plate respectively, so that the complete pass deformation is obtained, and the plate can obtain the arc consistent with the roller surface after passing. After the plate is output, it is caught by the staff and quality detection is performed. If the plate is qualified, the rolling of the whole blade is completed; if there are defects, the plate is sent back to the first horizontal rolling mill unit for re-rolling until the standard is reached.

[0051] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

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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