Wind power blade web die contour measuring device and measuring method

Abstract

The invention provides a wind power blade web die contour measuring device and measuring method. The measuring device comprises a chassis used for providing power to drive the measuring device to move in the length direction of the web die; one end of the stand column is connected with the chassis, and the other end is connected with the guide rail; the guide rail is formed by extending in the width direction of the web mold and is provided with a first detection assembly and a second detection assembly, and the first detection assembly and the second detection assembly can slide on the guide rail; the calibration plate is connected with the stand column, and the first detection assembly and the second detection assembly are arranged on the same side of the calibration plate. By controlling sliding of the first detection assembly and the second detection assembly, the first detection assembly and the second detection assembly make contact with the left side and the right side of the web die respectively, the distance between the first detection assembly and the calibration plate and the distance between the second detection assembly and the calibration plate are obtained, and the difference value of the two distances is the flange distance of the web die at the position. Under the driving action of the chassis, the measuring device moves in the length direction of the web mold, so that the position of the guide rail is continuously changed, and the flange spacing of the web mold at different positions is detected.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blade manufacturing, and in particular to a device and method for measuring the contour of a wind turbine blade web mould. Background Art

[0002] The web is an important load transfer component of the wind turbine blade. It mainly supports the main beam and bears the compression load when the blade swings. The quality of the web directly affects the overall quality of the wind turbine blade, which in turn affects the safety performance of the wind turbine. The web is produced by an integrated infusion molding process. The fiberglass cloth and core material are laid on the mold, and then the resin is infused and cured. The mold size affects the molding size of the web. The web profile is an arc curve from wide to narrow from the root to the tip, and the web mold is also the same.

[0003] To ensure the accuracy of the web size, the web mold needs to be measured and adjusted according to the measurement results. The current detection method is to draw a center line from the center of the root of the web mold as a reference, and then use a tape measure to measure the distance between the web mold rib and the center line. During the development of a new blade, the contour dimensions need to be collected twice, the first time for the web mold acceptance, and the second time for the web contour re-measurement (after completing the test web, the web rib is adjusted according to needs). This process requires the collaboration of three operators, and requires many measurement points, a large workload, and low efficiency.

[0004] CN211696173U discloses a device for accurately measuring the dimensions of the web profile of the inner cavity of a wind turbine blade. The device comprises at least a mounting bracket and a distance measuring component. The mounting bracket is provided with a plurality of distance measuring components, each of which is arranged in parallel with each other, and the mounting bracket is fixed to the position of the blade web to be installed in the cavity of the wind turbine blade and is arranged along the extension direction of the blade web to be installed. The distance measuring component is configured to complete the height measurement of the blade web to be installed. During the blade web mold processing process, the user only needs to process the blade web mold according to the data measured by the distance measuring component to ensure that the bonding thickness between the entire blade web and the shell is uniform, thereby effectively avoiding the problem of excessive bonding thickness or mold interference caused by inaccurate web profiles. This application must be used in the inner cavity of the blade to achieve the purpose of measurement, and multiple support feet and support rods need to be provided on the mounting bracket. Since the mounting bracket is fixed in position, only the dimensions at the fixed position can be measured. Summary of the invention

[0005] In view of this, the present invention aims to propose a wind turbine blade web mold contour measurement device and method, which is not limited by the usage scenario when measuring the web mold and can automatically perform multi-point detection.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] On the one hand, the present invention provides a wind turbine blade web mold contour measuring device for measuring the web mold, the measuring device comprising:

[0008] A chassis, used for providing power to drive the measuring device to move along the length direction of the web mold;

[0009] A column, one end of which is connected to the chassis and the other end is connected to the guide rail, for stably supporting the guide rail;

[0010] A guide rail is formed extending along the width direction of the web mold, and is provided with a first detection assembly and a second detection assembly, wherein the first detection assembly and the second detection assembly can slide on the guide rail;

[0011] The calibration plate is connected to the column, and the first detection component and the second detection component are arranged on the same side of the calibration plate. By controlling the sliding of the first detection component and the second detection component, the two components are respectively contacted with the left and right sides of the web mold, and the distance from the first detection component to the calibration plate and the distance from the second detection component to the calibration plate are obtained. The difference between the two distances is the rib spacing of the web mold at this position. Under the driving action of the chassis, the measuring device moves along the length direction of the web mold, thereby continuously changing the position of the guide rail to detect the rib spacing of the web mold at different positions.

[0012] Furthermore, the web mold includes a mold body and a first rib and a second rib located on the left and right sides of the mold body, respectively. The guide rail is parallel to the width direction of the mold body. During the sliding process, the first detection component contacts the first rib, and the second detection component contacts the second rib. The guide rail can not only provide a sliding track for the first detection component and the second detection component, but also enable the first detection component and the second detection component to always remain parallel, ensuring that the distance between the first detection component and the second detection component is the width dimension of the web mold.

[0013] Furthermore, the measuring device includes a support portion, which is arranged at the lower end of the center of the guide rail and is located between the first detection component and the second detection component. The support portion can stably support the guide rail to avoid tilting and improve measurement accuracy.

[0014] Furthermore, the first detection component and the second detection component both include a position detection component and an angle detection component. The position detection component is used to detect and obtain the horizontal distance from the web mold to the calibration plate, and the angle detection component is used to detect and obtain the inclination angle of the retaining edge.

[0015] Furthermore, the chassis includes a free mode and a directional mode. When in the free mode, the chassis can turn, move forward and backward, and when in the directional mode, the chassis can only move forward and backward in a straight line, and is equipped with a deviation correction function. When the measuring device is used to measure the web mold, the chassis is first adjusted to be in the free mode, and the chassis rotates or moves freely to adjust the position between the measuring device and the web mold so that the guide rail is at the root of the web mold. Then the chassis is adjusted to the directional mode, and the chassis can only move in the front and rear direction to prevent the chassis from running off during the measurement process and affecting the measurement accuracy.

[0016] Furthermore, the column is a lifting rod, which can adjust the height in the up and down directions so that the lower end of the support part is located on the upper surface of the mold body to adapt to web molds of different specifications.

[0017] Furthermore, the guide rail is of telescopic type and can adjust the width in the left-right direction. By adjusting the width of the guide rail, it is avoided that the left and right ends of the guide rail extend out of the web mold too much and occupy too much space.

[0018] On the other hand, the present invention also provides a method for measuring the contour of a web mold of a wind turbine blade, using the above-mentioned measuring device, the measuring method comprises the following steps:

[0019] Step 1, placing the measuring device at the root of the web mold;

[0020] Step 2: Taking the root position of the web mold as the initial position, adjust the distance between the first detection component and the second detection component to ensure that the first detection component is in contact with the first rib and the second detection component is in contact with the second rib, and collect the horizontal distance L1, horizontal distance L2, inclination angle α and inclination angle β of the position detected by the two detection components;

[0021] Step 3: The chassis moves toward the tip of the web mold, and during the movement, the first detection assembly and the second detection assembly move on the guide rail to ensure that the first detection assembly is always in contact with the first rib, and the second detection assembly is always in contact with the second rib;

[0022] Step 4, record the moving distance s of the chassis every time t, and collect the horizontal distance L1, horizontal distance L2, tilt angle α and tilt angle β of the position where the moving distance is located;

[0023] Step 5: When the chassis moves to the tip of the web mold, stop moving and measuring;

[0024] Step 6: Import the collected data into CAD software to obtain the test graphics, compare it with the standard belly plate, and determine the position and size that need to be adjusted.

[0025] Furthermore, in step 4, data collection and recording are performed every time interval of length s, t=s / v, where v is the moving speed of the chassis.

[0026] Compared with the prior art, the wind turbine blade web mold profile measuring device and method described in the present invention have the following advantages:

[0027] (1) The measuring device has a simple structure and can automatically measure the flange spacing and inclination angle of the web mold, avoiding manual operation using a tape measure and an angle measuring instrument, reducing labor intensity, greatly improving detection efficiency, and improving the accuracy of measurement data.

[0028] (2) By adjusting the time t to adjust the data collection interval, multi-point detection of the web mold can be achieved, which is not limited to the detection of the contour dimensions at a specific position. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a schematic structural diagram of the wind turbine blade web mold contour measuring device of the present invention for measuring the web mold;

[0031] Figure 2 for Figure 1 A local enlarged view at point A;

[0032] Figure 3 for Figure 1 A schematic diagram of the structure without the guide rail, the first detection component and the second detection component;

[0033] Figure 4 It is a schematic diagram when the guide rail moves to different positions of the web mold;

[0034] Figure 5 The outline drawing according to the design dimensions and the outline drawing according to the measured dimensions of Example 1 of the present invention are shown.

[0035] Description of reference numerals:

[0036] 1. Chassis; 2. Column; 3. Guide rail; 4. First detection component; 5. Second detection component; 6. Support part; 7. Web plate mold; 8. Mold body; 9. First rib; 10. Second rib; 11. Position detection component; 12. Angle detection component. DETAILED DESCRIPTION

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The embodiments described in the present invention are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] like Figures 1 to 3 As shown, the present invention proposes a wind turbine blade web mold contour measuring device for measuring the web mold 7, the measuring device comprising:

[0040] The chassis 1 is used to provide power to drive the measuring device to move along the length direction of the web mold 7;

[0041] A column 2, one end of which is connected to the chassis 1, and the other end of which is connected to the guide rail 3, for stably supporting the guide rail 3;

[0042] The guide rail 3 is formed by extending along the width direction of the web mold 7, and is provided with a first detection component 4 and a second detection component 5, wherein the first detection component 4 and the second detection component 5 can slide on the guide rail 3;

[0043] The calibration plate is connected to the column 2, and the first detection component 4 and the second detection component 5 are arranged on the same side of the calibration plate.

[0044] In the length direction of the web mold 7, that is, from the root to the tip of the web mold 7, the outline of the web mold 7 is an arc curve from wide to narrow. The method of manually measuring the size is not only cumbersome but also has certain errors. The measuring device of the present invention is adopted, by controlling the sliding of the first detection component 4 and the second detection component 5, so that the two are respectively in contact with the left and right sides of the web mold 7, and the distance from the first detection component 4 to the calibration plate and the distance from the second detection component 5 to the calibration plate are obtained. The difference between the two distances is the rib spacing of the web mold 7 at this position. Under the driving action of the chassis 1, the measuring device moves along the length direction of the web mold 7, thereby continuously changing the position of the guide rail 3 to detect the rib spacing of the web mold 7 at different positions. The measuring device of the present invention has a simple structure and can be operated directly on the web mold 7 without placing the measuring device inside the wind turbine blade. It is easy to operate and is not limited by the use scenario.

[0045] The web mold 7 includes a mold body 8 and a first rib 9 and a second rib 10 located on the left and right sides of the mold body 8, respectively. The guide rail 3 is parallel to the width direction of the mold body 8. During the sliding process, the first detection component 4 contacts the first rib 9, and the second detection component 5 contacts the second rib 10. The guide rail 3 can not only provide a sliding track for the first detection component 4 and the second detection component 5, but also enable the first detection component 4 and the second detection component 5 to always remain parallel, ensuring that the distance between the first detection component 4 and the second detection component 5 is the width dimension of the web mold 7.

[0046] The measuring device includes a support portion 6, which is arranged at the lower end of the center of the guide rail 3, and the support portion 6 is located between the first detection component 4 and the second detection component 5. When the measuring device is in use, the guide rail 3 is above the support portion 6, and the mold body 8 is below. In view of the large size of the web mold 7, the measuring device used to measure the web mold 7 also has a large size. When the guide rail 3 moves in the front-to-back direction and the first detection component 4 and the second detection component 5 move left and right along the guide rail 3, the guide rail 3 is prone to tilt, resulting in the first detection component 4 and the second detection component 5 not being at the same height, affecting the measurement accuracy. The support portion 6 can stably support the guide rail 3 to avoid tilting and improve the measurement accuracy.

[0047] As a preferred example of the present invention, the first detection component 4 and the second detection component 5 both include a position detection component 11 and an angle detection component 12, wherein the position detection component 11 is used to detect and obtain the horizontal distance from the web mold 7 to the calibration plate, and the angle detection component 12 is used to detect and obtain the inclination angle of the flange. Specifically, for the first detection component 4 in contact with the first flange 9, the position detection component 11 is used to detect and obtain the horizontal distance L1 from the first flange 9 to the calibration plate, and the angle detection component 12 is used to detect and obtain the inclination angle α of the first flange 9. For the second detection component 5 in contact with the second flange 10, the position detection component 11 is used to detect and obtain the horizontal distance L2 from the second flange 10 to the calibration plate, and the angle detection component 12 is used to detect and obtain the inclination angle β of the second flange 10.

[0048] The measuring device further comprises a controller, which is used to control the first detection component 4 and the second detection component 5 to approach the mold body 8 respectively, to ensure that the first detection component 4 contacts the first rib 9, and the second detection component 5 contacts the second rib 10. The controller is also used to control the chassis 1 to move at a preset speed v.

[0049] Furthermore, the chassis 1 includes a free mode and a directional mode. When in the free mode, the chassis 1 can turn, move forward and backward, and when in the directional mode, the chassis 1 can only move forward and backward in a straight line, and is equipped with a deviation correction function. When the web mold 7 is measured using a measuring device, the chassis 1 is first adjusted to be in the free mode, and the chassis 1 rotates or moves freely to adjust the position between the measuring device and the web mold 7 so that the guide rail 3 is at the root of the web mold 7. Then the chassis 1 is adjusted to be in the directional mode, and the chassis 1 can only move in the front and rear direction to prevent the chassis 1 from running off during the measurement process and affecting the measurement accuracy. The chassis 1 uses a battery as a power source.

[0050] The column 2 is a lifting rod, which can adjust the height in the up and down direction so that the lower end of the support part 6 is located on the upper surface of the mold body 8 to adapt to different specifications of the web mold 7. The upper end of the column 2 has a clamping groove, and the guide rail 3 is clamped with the column 2 through the clamping groove to improve the connection firmness and prevent the guide rail 3 from falling off.

[0051] The guide rail 3 is of telescopic type and can adjust the width in the left and right directions. When the guide rail 3 moves to the tip direction close to the web mold 7 under the driving action of the chassis 1, the width of the web mold 7 gradually narrows. By adjusting the width of the guide rail 3, it is prevented that the left and right ends of the guide rail 3 extend too much out of the web mold 7 and occupy too much space.

[0052] The present invention also provides a measurement method, using the above-mentioned measurement device, the measurement method comprises the following steps:

[0053] Step 1: placing the measuring device at the root of the web mold 7;

[0054] Step 2: Take the root position of the web mold 7 as the initial position, adjust the distance between the first detection component 4 and the second detection component 5, ensure that the first detection component 4 is in contact with the first rib 9, and the second detection component 5 is in contact with the second rib 10, and collect the horizontal distance L1, horizontal distance L2, inclination angle α and inclination angle β of the position detected by the two detection components;

[0055] Step 3: The chassis 1 moves toward the tip of the web mold 7. During the movement, the first detection component 4 and the second detection component 5 move on the guide rail 3 to ensure that the first detection component 4 is always in contact with the first rib 9, and the second detection component 5 is always in contact with the second rib 10;

[0056] Step 4, record the moving distance s of the chassis 1 every time t, and collect the horizontal distance L1, horizontal distance L2, tilt angle α and tilt angle β of the position where the moving distance is located;

[0057] Step 5: When the chassis 1 moves to the tip direction of the web mold 7, stop moving and measuring;

[0058] Step 6: Import the collected data into CAD software to obtain the test graphics, compare it with the standard belly plate, and determine the position and size that need to be adjusted.

[0059] Furthermore, in step 4, Figure 4 The positions of the first detection assembly 4, the second detection assembly 5 and the web mold 7 when the guide rail 3 moves different distances are shown. Data collection and recording are performed every s length interval, t=s / v, where v is the moving speed of the chassis 1. Furthermore, s is 0.5m.

[0060] The wind turbine blade web mold contour measuring device and method of the present invention can automatically measure the rib spacing and inclination angle of the web mold 7, avoiding manual operation using a tape measure and an angle measuring instrument, reducing labor intensity, greatly improving detection efficiency, and improving the accuracy of measurement data. At the same time, by adjusting the time t to adjust the data collection interval, multi-point detection of the web mold 7 is achieved, and it is not limited to the detection of contour dimensions at a specific position. Example 1

[0061] Figure 5 The black curve in the middle represents the contour of the web mold 7 drawn according to the design dimensions, and the purple curve represents the contour of the web mold 7 drawn according to the data obtained by the measuring device and the measuring method of the present invention. Aligning the root midpoint positions of the two contours, it can be seen that the two are approximately coincident, indicating that the measuring device and the measuring method of the present invention have high accuracy. Adjust the positions of the first rib 9 and the second rib 10 that are out of tolerance so that the web mold 7 meets the design requirements.

[0062] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine blade web mold contour measuring device, used for measuring a web mold (7), characterized in that: The measuring device comprises: A chassis (1) for providing power to drive the measuring device to move along the length direction of the web mold (7); A column (2), one end of which is connected to the chassis (1) and the other end of which is connected to the guide rail (3), and is used to stably support the guide rail (3); The guide rail (3) is formed extending along the width direction of the web mold (7), and is provided with a first detection component (4) and a second detection component (5), wherein the first detection component (4) and the second detection component (5) are capable of sliding on the guide rail (3); A calibration plate is connected to the column (2), and the first detection component (4) and the second detection component (5) are arranged on the same side of the calibration plate.

2. The measuring device according to claim 1, characterized in that The web mold (7) comprises a mold body (8) and a first rib (9) and a second rib (10) respectively located on the left and right sides of the mold body (8). The guide rail (3) and the mold body (8) are parallel in width direction. During the sliding process, the first detection component (4) contacts the first rib (9), and the second detection component (5) contacts the second rib (10).

3. The measuring device according to claim 1, characterized in that The measuring device comprises a support portion (6), wherein the support portion (6) is arranged at the lower end of the center of the guide rail (3), and the support portion (6) is located between the first detection component (4) and the second detection component (5).

4. The measuring device according to claim 2, characterized in that The first detection component (4) and the second detection component (5) both comprise a position detection component (11) and an angle detection component (12); the position detection component (11) is used to detect and obtain the horizontal distance between the web mold (7) and the calibration plate; and the angle detection component (12) is used to detect and obtain the inclination angle of the rib.

5. The measuring device according to claim 1, characterized in that The chassis (1) comprises a free mode and a directional mode. When in the free mode, the chassis (1) can perform steering, forward and backward movement. When in the directional mode, the chassis (1) can only perform forward and backward linear movement and is equipped with a deviation correction function.

6. The measuring device according to claim 1, characterized in that The upright column (2) is a lifting rod, and the height can be adjusted in the up and down directions.

7. The measuring device according to claim 1, characterized in that The guide rail (3) is of telescopic type and can adjust its width in the left-right direction.

8. A method for measuring the contour of a wind turbine blade web mold, using the measuring device according to any one of claims 1 to 7, characterized in that: The measuring method comprises the following steps: Step 1: placing the measuring device at the root of the web mold (7); Step 2: With the root position of the web mold (7) as the initial position, adjust the distance between the first detection component (4) and the second detection component (5) to ensure that the first detection component (4) is in contact with the first retaining edge (9), and the second detection component (5) is in contact with the second retaining edge (10), and collect the horizontal distance L1, horizontal distance L2, tilt angle α and tilt angle β of the position detected by the two detection components; Step 3: The chassis (1) moves toward the tip of the web mold (7), and during the movement, the first detection component (4) and the second detection component (5) move on the guide rail (3), ensuring that the first detection component (4) is always in contact with the first retaining edge (9), and the second detection component (5) is always in contact with the second retaining edge (10); Step 4, recording the moving distance s of the chassis (1) at every time t, and collecting the horizontal distance L1, horizontal distance L2, tilt angle α and tilt angle β of the position where the moving distance is located; Step 5: When the chassis (1) moves to the tip direction of the web mold (7), the movement and measurement are stopped; Step 6: Import the collected data into CAD software to obtain the test graphics, compare it with the standard belly plate, and determine the position and size that need to be adjusted.

9. The measuring method according to claim 8, characterized in that: In step 4, data collection and recording are performed every time interval of length s, t=s / v, where v is the moving speed of the chassis (1).

Images