Laser positioning device and positioning method for blade laying layer of wind driven generator

Abstract

The invention relates to a wind power generator blade laying layer laser positioning device and method, and belongs to the technical field of wind power blade manufacturing, and the device comprises a laser emitter used for positioning a blade laying layer; the rotating part is used for bearing and driving the laser transmitter to rotate and position; and the base is provided with a first positioning part, the first positioning part is used for positioning between the laser positioning device and the blade mold, and the base is connected with the rotating part through a pin shaft. By the adoption of the laser positioning device, the laying layer position can be more accurately positioned when a cloth layer is laid on the fan blade, and the laying efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbine blade manufacturing, and specifically to a wind turbine blade ply laser positioning device and positioning method. Background Art

[0002] The ply structure of wind turbine blades directly affects their strength and stiffness. Accurate ply positioning ensures that the blades will not be excessively deformed or damaged when subjected to huge wind loads. Inaccurate ply positioning may lead to insufficient blade strength, reduce the service life of the blades, and even cause serious accidents such as blade breakage. Ply positioning affects the shape accuracy of the blades. Correct positioning can make the blade airfoil meet the design requirements and improve the wind energy conversion efficiency. If the ply positioning deviates, the blade surface may become uneven, resulting in airflow separation, increased aerodynamic resistance, and thus reduced power generation efficiency.

[0003] Wind turbine blades are multi-layer composite materials composed of glass fiber and resin. The production of blades requires laying multiple layers of glass fiber cloth in the mold. During the laying process, the position of each piece of cloth needs to be accurately positioned. The traditional ply positioning method requires manual measurement of chord-wise positioning using a tape measure and a plumb bob based on the span-wise scale. This method is inefficient and has poor accuracy. The existing ply positioning method considers using a laser positioning device to locate the ply position. The commonly used laser positioning device is a three-coordinate scanner. Although the accuracy meets the requirements, the cost of the three-coordinate scanner is very high. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present application provides a wind turbine blade ply laser positioning device and positioning method, aiming to more accurately position the wind turbine blade ply.

[0005] To achieve the above-mentioned purpose, the present application provides a wind turbine blade ply laser positioning device, comprising: a laser transmitter for positioning the blade plies; A rotating part, carrying and driving the laser emitter to perform rotational positioning; and The base is provided with a first positioning part, wherein the first positioning part is used for positioning the laser positioning device to align with the spanwise scale of the blade mold, and the base is connected to the rotating part through a pin shaft.

[0006] Optionally, the rotating part comprises: a rotating shaft; A turning table having a rotation axis mounting hole and a supporting structure for fixing the laser transmitter; and A servo engine is used to control the rotation angle of the flip table.

[0007] Optionally, the flip table has at least two coupling plates, a support plate, and a second positioning portion; wherein the support plate is arranged between the coupling plates, and the second positioning portion is used for positioning the laser emitter and the base.

[0008] Optionally, the rotating part further includes a connecting bracket having a first through hole and a second through hole, wherein: The first through hole cooperates with the pin shaft to connect the base, and the first through hole is a longitudinally extending waist hole, which allows the connecting bracket to move longitudinally relative to the base; The rotating shaft passes through the second through hole to drive the turning platform to rotate.

[0009] Optionally, a servo mounting plate and a servo mounting hole are provided on one side of the connecting bracket, and the servo is bolted to the connecting bracket.

[0010] Optionally, the base has a connecting end and a positioning end; the first positioning portion is a groove arranged along the longitudinal symmetry axis of the base or a positioning line arranged at the positioning end; the second positioning portion is a groove or a positioning line.

[0011] Optionally, the base has a connecting arm and a connecting hole, and the connecting hole cooperates with the first through hole to connect the rotating part.

[0012] Optionally, the sum of the setting angle of the connecting arm and the angle of the transition surface is 180°, so that the connecting arm fits the transition surface.

[0013] Optionally, the laser transmitter has a laser ranging module.

[0014] In addition, to achieve the above-mentioned purpose, the present application also provides a wind turbine blade ply laser positioning method, using the wind turbine blade ply laser positioning device as described above, the method comprising: Convert the input angle information into PWM duty cycle data; Outputting serial port instructions according to the PWM duty cycle data; The control servo rotates the output shaft according to the serial port command to rotate the laser transmitter and perform angle positioning on the blade ply.

[0015] The present application provides a wind turbine blade ply laser positioning device and positioning method, the device comprising: a laser emitter for positioning toward a blade ply; a rotating part for carrying and driving the laser emitter for rotational positioning; and a base, provided with a first positioning part, the first positioning part being used for positioning between the laser positioning device and a blade mold, the base being connected to the rotating part via a pin shaft.

[0016] Compared with the prior art which requires manual tape measurement for ply position, the laser positioning device provided in the present application automatically positions the ply point according to the input angle, the rotating part rotates according to the input angle, and the laser transmitter determines the point position, which can effectively improve the ply efficiency and ply accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a laser positioning device according to an embodiment of a wind turbine blade ply laser positioning device and positioning method of the present application; Figure 2 This is a structural diagram of a turning table of an embodiment of a wind turbine blade ply laser positioning device and positioning method of the present application; Figure 3 This is a structural diagram of a connecting bracket of another embodiment of the wind turbine blade ply laser positioning device and positioning method of the present application; Figure 4 This is a base structure diagram of an embodiment of a wind turbine blade ply laser positioning device and positioning method of the present application; Figure 5 A schematic diagram of a partial transverse cross-section of a blade mold according to an embodiment of a wind turbine blade ply laser positioning device and positioning method of the present application; Figure 6 This is a schematic diagram of the placement of a laser positioning device according to an embodiment of a wind turbine blade ply laser positioning device and positioning method of the present application; Figure 7 This is a circuit schematic diagram of an embodiment of a wind turbine blade ply laser positioning device and positioning method of the present application.

[0018] Reference numerals: Rotating part 100, turning table 110, coupling plate 111, supporting plate 112, top supporting plate 112a, second positioning part 113, connecting bracket 120, first through hole 121, second through hole 122, steering gear mounting plate 123, steering gear mounting hole 124; Base 200, first positioning portion 210, connecting arm 220, connecting hole 221; Flange plane 1, transition surface 2, flange boss 3, inner side of blade mold 4, flange parting line 4a. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] When manufacturing wind turbine blades, multiple layers of fiberglass cloth need to be laid in the mold. Due to the large size of the blade mold and the limited size of each piece of cloth, each layer of fiberglass cloth needs to be laid in the blade mold separately when laying each layer of fiberglass cloth. The laying position of each piece of fiberglass cloth needs to be determined manually. At present, when laying the cloth, there are scale marks in the blade length direction, i.e. the span direction, which can be used to determine the span position of the cloth. The blade width direction, i.e. the chord direction, cannot be determined by marking because each layer of cloth will be covered. Manual measurement and positioning are required, which is inefficient.

[0022] The blade mold is usually divided into two halves. When the mold is closed, the joint surface of the two halves of the mold is the flange plane, and the flange plane is provided with scale marks in the blade length direction / span direction. The wind turbine blade laying laser positioning device of the present application is placed on the flange plane. When the length position scale has been determined, it is used to determine the blade width direction / chord position. When laying, it starts from the flange parting line to the inside of the mold. Figure 5 It is a schematic diagram of a partial transverse section of a blade mold. A flange boss 3 is provided near the inner side 4 of the blade mold on the flange plane 1. A transition surface 2 is provided between the flange plane 1 and the flange boss 3. A spanwise scale is provided on the other side of the flange plane 1. The left side of the flange boss 3 is the inner side 4 of the blade mold, and the left side line is the flange parting line 4a of the blade.

[0023] In the first embodiment of the wind turbine blade ply laser positioning device and positioning method of the present application, the wind turbine blade ply laser positioning device includes: a laser transmitter for positioning the blade ply; The rotating part 100 carries and drives the laser emitter to perform rotational positioning; and The base 200 is provided with a first positioning portion 210, and the first positioning portion 210 is used for positioning the laser positioning device to align with the spanwise scale of the blade mold. The base 200 is connected to the rotating portion 100 through a pin shaft.

[0024] It should be noted that, refer to Figure 1, a laser emitter is fixedly arranged on the rotating part 100, and the rotating part 100 can determine the width point in the blade mold by rotating the corresponding angle. The base 200 is an axisymmetric trapezoid, which is placed on the flange plane 1 of the blade mold. A pin connection structure is arranged on one side of the short side of the trapezoid, and the rotating part 100 is connected to one side of the short side of the trapezoid through a pin. The first positioning part 210 is used to determine the spanwise position of the laser positioning device on the blade mold. The first positioning part 210 can be a scale, a positioning line, etc., which is compared with the scale of the flange plane 1 of the blade mold to determine the spanwise position of the laser positioning device.

[0025] For example, the pin connection structure can be a fixed seat or a connecting arm 220 with a pin installation hole; the rotating part 100 is driven by the steering gear to rotate to a specified angle. Figure 6 The short side of the trapezoid of the base 200 is in contact with the transition surface 2, and the long side points to the outside of the flange plane 1. The first positioning portion 210 is aligned with the corresponding spanwise scale, and then the chordwise positioning is performed in the mold.

[0026] Compared with the prior art which requires manual use of a tape measure to measure the chord-wise angle of the ply position, the laser positioning device provided in the present application automatically positions the chord-wise position of the ply point according to the input angle, and the rotating part 100 rotates and positions according to the input angle, which can effectively improve the plying efficiency and laying accuracy.

[0027] Furthermore, the rotating part 100 includes: a rotating shaft; a flip table 110 having a rotating shaft mounting hole and a supporting structure for fixing the laser transmitter; and a steering gear for controlling the rotation angle of the flip table 110 .

[0028] It should be noted that, refer to Figure 2 The turning platform 110 has two vertical coupling plates 111, both of which are provided with through holes to connect the rotating shaft. The coupling plates 111 are connected by connecting surfaces on the side away from the axial direction. The bottom and top surfaces of the turning platform 110 are also provided with connecting surfaces to connect the two vertical coupling plates 111. The cavity surrounded by the coupling plates 111 and the connecting surfaces forms a supporting structure, which can be used to place the laser transmitter. The top surface connecting surface is provided on the side close to the rotating shaft. The rotating shaft can be the same axis as the pin shaft of the base 200, and the steering gear is installed on the outside of the through hole of the turning platform 110.

[0029] Furthermore, the flip table 110 has at least two coupling plates 111 , a support plate 112 , and a second positioning portion 113 ; wherein the support plate 112 is disposed between the coupling plates 111 , and the second positioning portion 113 is used for positioning the laser emitter and the base 200 .

[0030] It should be noted that the support plate 112 is the bottom connection surface and the top connection surface mentioned above, which connects the two side coupling plates 111 and plays a supporting role. The second positioning portion 113 is provided on the top support plate 112a, which can be a groove, a scale or a positioning line. The second positioning portion 113 is consistent with the longitudinal position of the base 200, and is used to calibrate the laser emission direction of the laser emitter on the rotating part 100, which is consistent with the direction of the first positioning portion 210 of the base 200.

[0031] Exemplarily, the second positioning portion 113 is a groove, the groove is consistent with the direction of the laser emitter, and the direction of the groove is consistent with the direction of the first positioning portion 210 of the base 200, so that the laser emission direction is consistent with the direction of the first positioning portion 210.

[0032] Furthermore, the base 200 has a connecting end and a positioning end; the first positioning portion 210 is a groove arranged along the longitudinal symmetry axis of the base 200, or a positioning line arranged at the positioning end; the second positioning portion 113 is a groove or a positioning line.

[0033] It should be noted that the connection end is the short side of the trapezoid of the base 200, and the positioning end is the long side of the trapezoid of the base 200. Figure 4 The first positioning portion 210 is a groove arranged along the trapezoidal symmetry axis of the base 200. The first positioning portion 210 can also be a positioning line arranged at the positioning end, such as a scale mark and a straight line. The second positioning portion 113 is arranged on the top support plate 112a, and can be specifically: a groove in the same direction as the laser emission, or a positioning line, and the positioning line includes a scale mark and a straight line.

[0034] In this embodiment, when installing the laser emitter, first align the laser emission direction with the positioning direction of the second positioning portion 113 on the rotating portion 100, align the corresponding positioning lines, and then adjust the direction of the rotating portion 100 and the first positioning portion 210 of the base 200, and align the positioning line of the second positioning portion 113 with the positioning line of the first positioning portion 210 of the base 200, so as to ensure that the laser emission direction is consistent with the positioning line direction of the first positioning portion 210. The first positioning portion 210 is also used to align the spanwise position of the blade mold.

[0035] Furthermore, based on the above-mentioned first embodiment, a second embodiment of the present application is proposed. The main difference between this embodiment and the above-mentioned first embodiment is that, in this embodiment, the rotating part 100 also includes a connecting bracket 120, having a first through hole 121 and a second through hole 122, wherein: the first through hole 121 cooperates with the pin shaft to connect the base 200, and the first through hole 121 is a longitudinally extending waist hole, which can enable the connecting bracket 120 to move longitudinally relative to the base 200; the rotating shaft passes through the second through hole 122 to drive the flip table 110 to rotate.

[0036] It should be noted that, refer to Figure 1 and Figure 3 The rotating part 100 may further include a connecting bracket 120, and the flip table 110 is connected to the base 200 through the connecting bracket 120. The first through hole 121 of the connecting bracket 120 is connected to the base 200, and the second through hole 122 is connected to the rotation axis of the flip table 110. The longitudinal direction is the length direction of the base 200, and the first through hole 121 is a longitudinally extending waist hole. The relative longitudinal position of the connecting bracket 120 and the base 200 can be adjusted through the first through hole 121 to adjust the longitudinal position of the emission starting point of the laser emitter on the flip table 110. Here, the longitudinal position is the chord position of the blade mold.

[0037] Exemplarily, when the laser positioning device is placed, the short side of the trapezoid of the base 200 fits the transition surface 2, and the connecting bracket 120 moves longitudinally so that the laser emission point and the flange parting line 4a are on the same plane, so that the chordal point of the ply can be positioned more accurately according to the angle.

[0038] Furthermore, a steering gear mounting plate 123 and a steering gear mounting hole 124 are provided on one side of the connecting bracket 120 , and the steering gear is connected to the connecting bracket 120 by bolts.

[0039] It should be noted that, refer to Figure 3 A steering gear mounting plate 123 is provided at the second through hole 122 on one side of the coupling bracket. The steering gear mounting plate 123 is provided with four steering gear mounting holes 124. The steering gear is connected to the connecting bracket 120 through the steering gear mounting holes 124. Figure 2 A connecting structure of a steering wheel is provided at the same side rotation axis of the turning platform 110 and the connecting part steering wheel mounting plate 123. The steering wheel is fixedly connected to the turning platform 110 to drive the turning platform 110 to rotate.

[0040] Furthermore, the base 200 has a connecting arm 220 and a connecting hole 221 , and the connecting hole 221 cooperates with the first through hole 121 to connect to the rotating part 100 .

[0041] Furthermore, the sum of the setting angle of the connecting arm 220 and the transition surface angle is 180°, so that the connecting arm 220 fits the transition surface 2.

[0042] It should be noted that, refer to Figure 4, a connecting arm 220 is provided on one side of the trapezoidal short side of the base 200 to connect the rotating part 100, and the setting angle between the connecting arm 220 and the base 200 is preferably the angle of the transition surface 2 of the blade mold, that is, the sum of the setting angle and the angle of the transition surface 2 is 180°. Exemplarily, when the angle of the transition surface 2 is 45°, the setting angle of the connecting arm 220 is 135°, and the connection mode between the connecting arm 220 and the base 200 is a fixed connection. In another feasible embodiment, the connecting arm 220 is rotatably connected to the base 200, and the connecting arm 220 can be made to fit the transition surface 2 by adjusting the setting angle of the connecting arm 220. The connection modes of the connecting arm 220 and the base 200 include hinge connection, pin connection, etc. The connecting hole 221 is a long waist-shaped hole, which is consistent with the length direction of the connecting arm 220, so as to facilitate the adjustment of the height between the rotating part 100 and the base 200, so that the rotating part 100 can better fit the plane of the flange boss 3 of the blade mold.

[0043] Specifically, refer to Figure 6 When the laser positioning device is positioning, the base 200 is placed on the flange plane 1, the connecting part of the base 200 fits the transition surface 2, and the rotating part 100 is adjusted to a height suitable for the flange boss 3 by adjusting the connection position with the long waist-shaped hole of the connecting arm 220, and then the rotating part 100 is further adjusted to connect the bracket 120 as needed.

[0044] Furthermore, the laser transmitter has a laser ranging module.

[0045] In this embodiment, the theoretical angle and theoretical distance from each measuring point to the theoretical laser emission source are obtained through the three-dimensional model of the blade mold. In order to measure the rotation accuracy of the steering gear and make its accuracy meet the positioning requirements, when the steering gear rotates to complete the theoretical angle, the actual distance from the laser emission source to the positioning point is also measured by a laser rangefinder. The actual distance is compared with the theoretical distance to determine the accuracy of the positioning point.

[0046] In addition, the embodiment of the present application also proposes a wind turbine blade ply laser positioning method, which is applied to the wind turbine blade ply laser positioning device as described above, and the method includes: Step S10, converting the input angle information into PWM (Pulse Width Modulation) duty cycle data; Step S20, outputting a serial port instruction according to the PWM duty cycle data; Step S30, controlling the servo to rotate the output shaft according to the serial port command, so as to rotate the laser transmitter and perform angle positioning on the blade ply.

[0047] It should be noted that Figure 7The circuit schematic diagram of the laser positioning device and method. The steering machine will rotate to the corresponding position according to the PWM duty cycle, and the input angle will be converted and output to the corresponding PWM duty cycle data. During measurement, according to the angle data of the point to be measured in the three-dimensional model of the blade mold, the laser positioning device is placed on the spanwise scale and rotated by a corresponding angle in the chordwise direction to determine the point to be measured.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade ply laser positioning device, characterized in that: include: a laser transmitter for positioning the blade plies; A rotating part, carrying and driving the laser emitter to perform rotational positioning; as well as The base is provided with a first positioning part, wherein the first positioning part is used for positioning the laser positioning device to align with the spanwise scale of the blade mold, and the base is connected to the rotating part through a pin shaft.

2. The wind turbine blade ply laser positioning device according to claim 1, characterized in that: The rotating part includes: a rotating shaft; A turning table having a rotation axis mounting hole and a supporting structure for fixing the laser transmitter; and A servo engine is used to control the rotation angle of the flip table.

3. The wind turbine blade ply laser positioning device according to claim 2, characterized in that: The flip table has at least two coupling plates, a support plate, and a second positioning portion; wherein the support plate is arranged between the coupling plates, and the second positioning portion is used for positioning the laser emitter and the base.

4. The wind turbine blade ply laser positioning device according to claim 3, characterized in that: The rotating part further includes a connecting bracket having a first through hole and a second through hole, wherein: The first through hole cooperates with the pin shaft to connect the base, and the first through hole is a longitudinally extending waist hole, which allows the connecting bracket to move longitudinally relative to the base; The rotating shaft passes through the second through hole to drive the turning platform to rotate.

5. The wind turbine blade ply laser positioning device according to claim 4, characterized in that: A steering gear mounting plate and a steering gear mounting hole are provided on one side of the connecting bracket, and the steering gear is bolted to the connecting bracket.

6. The wind turbine blade ply laser positioning device according to claim 4, characterized in that: The base has a connecting end and a positioning end; the first positioning portion is a groove arranged along the longitudinal symmetry axis of the base, or a positioning line arranged at the positioning end; the second positioning portion is a groove or a positioning line.

7. The wind turbine blade ply laser positioning device according to claim 6, characterized in that: The base has a connecting arm and a connecting hole, and the connecting hole cooperates with the first through hole to connect the rotating part.

8. The wind turbine blade ply laser positioning device according to claim 7, characterized in that: The sum of the setting angle of the connecting arm and the angle of the transition surface is 180°, so that the connecting arm fits the transition surface.

9. The wind turbine blade ply laser positioning device according to claim 1, characterized in that: The laser transmitter has a laser ranging module.

10. A wind turbine blade ply laser positioning method, applied to the wind turbine blade ply laser positioning device according to any one of claims 1 to 9, characterized in that: include: Convert the input angle information into PWM duty cycle data; Outputting serial port instructions according to the PWM duty cycle data; The control servo rotates the output shaft according to the serial port command to rotate the laser transmitter and perform angle positioning on the blade ply.

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