A wind power blade leading edge dressing tool and detection method

Abstract

This invention relates to a tooling and inspection device for shaping the leading edge of a wind turbine blade, which solves the problems of poor shaping effect and low efficiency of manual blade shaping. The tooling includes a shaping frame and a shaping plate. The shaping frame is equipped with a hand handle. The inner surface of the shaping plate is made into a smooth plane. By observing the light transmittance when the inner surface of the shaping plate contacts the leading edge of the blade, the tooling is used to initially detect the quality of the leading edge shape during the shaping process, and to correct the leading edge shape at any time, thereby reducing the scrap rate.

Description

Technical Field

[0001] This invention relates to a tooling for shaping, specifically a tooling for shaping the leading edge of a wind turbine blade. Background Technology

[0002] As a crucial component of wind turbine blades, the leading edge is highly susceptible to corrosion when exposed to the effects of rain, wind, and salt spray over extended periods, thus impacting the blade's lifespan. Therefore, careful attention must be paid to the quality of its processing during manufacturing. However, current methods for shaping the leading edge of wind turbine blades do not allow for precise angle adjustment. Consequently, during the application of coatings, the shaping plate cannot effectively conform to the blade edge as the leading edge angle changes, affecting its usability. Summary of the Invention

[0003] The purpose of this invention is to provide a tooling for shaping the leading edge of wind turbine blades. This tooling allows for adjustment of the angle, replacement of worn connecting parts on the inner side of the shaping plate, and self-detection of the smooth surface during the shaping process, thereby improving shaping efficiency when processing different blade leading edge angles.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A tooling for shaping the leading edge of a wind turbine blade includes a shaping frame, a shaping plate, and a hand handle mounted on the shaping frame. The shaping frame and the shaping plate are connected by fastening bolts and adjusting bolts passing through corresponding nuts and threaded holes. The shaping plate is located inside the shaping frame, and a connector is installed on the inner side of the shaping plate so that it can be replaced after wear.

[0006] Furthermore, the two sides of the trimming frame can be adjusted and rotated around the pivot according to the change of the leading edge angle of the blade, and the limiting posts and limiting hooks set on the trimming frame prevent arbitrary changes in the angle during the use of the trimming tool.

[0007] Furthermore, the curved part of the shaping plate has an elastic structure; the two sides of the shaping plate have rigid scrapers.

[0008] Furthermore, the angle between the two trimming plates can be finely adjusted by adjusting the distance between the trimming plates and the trimming frame using adjusting bolts.

[0009] Furthermore, the shaping plate is provided with fixing blocks for fixing the connecting parts.

[0010] Furthermore, the inner surface of the shaping plate is a smooth plane, which can be fitted with sandpaper or abrasive blocks.

[0011] Furthermore, the sandpaper or abrasive block is detachably connected to the shaping plate.

[0012] Furthermore, the hand handle is equipped with a rubber sleeve for anti-slip when force is applied.

[0013] Furthermore, after removing the sandpaper or abrasive block, the inner side of the trimming plate can be used to perform a preliminary inspection of the flatness of the blade's leading edge.

[0014] A method for inspecting the leading edge of a wind turbine blade after the blade has been shaped by the aforementioned blade shaping process involves removing the sandpaper or abrasive block from the shaping plate, making the inner surface of the shaping plate a smooth plane, and observing the light transmittance when the inner surface of the shaping plate contacts the leading edge of the blade to conduct a preliminary inspection of the appearance quality after shaping.

[0015] The beneficial effects of the embodiments of the present invention are as follows:

[0016] 1. Compared with existing trimming tools, this application is simple to operate and has an adjustable angle, which solves the problem that existing trimming tools cannot adjust the angle well, resulting in the trimming plate not being able to fit well with the blade edge during the trimming process, thus affecting its use.

[0017] 2. By checking the smoothness of the inner side of the trimming plate, the quality of the leading edge of the wind turbine blade can be initially inspected, the quality of the blade trimming process can be determined, uneven parts can be detected in time, and subsequent re-trimming of unqualified parts can be avoided, thus improving efficiency.

[0018] 3. The length of the arc-shaped part of the trimming plate is greater than the length of the corresponding arc-shaped part of the trimming frame, so that when the surface of the leading edge of the wind turbine blade is polished later, the trimming plate can completely cover the construction area of ​​the trimming card.

[0019] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is an overall schematic diagram of an embodiment of the present invention;

[0022] Figure 2 This is a side view of an embodiment of the present invention;

[0023] Figure 3 This is a side view of the shaping plate in an embodiment of the present invention;

[0024] Figure 4 This is an inner view of the shaping plate in an embodiment of the present invention;

[0025] Figure 5This is a schematic diagram of the limiting hook in an embodiment of the present invention;

[0026] Among them, 1-shaping frame, 2-shaping plate, 3-handle, 4-adjusting bolt, 5-rotating shaft, 6-fastening bolt, 7-fastening bolt hole, 8-adjusting bolt hole, 9-limiting post, 10-limiting hook, 11-fastening bolt nut, 12-adjusting bolt nut, 13-fixing block, 14-scraper. Detailed Implementation

[0027] As mentioned in the background section, existing methods cannot effectively adjust the angle when modifying blades with different leading edge angles. This results in the modification plate not fitting the blade edge properly as the leading edge angle changes, affecting its usability.

[0028] To address the aforementioned technical problems, this invention provides a wind turbine blade leading edge trimming fixture. The trimming frame allows for angle adjustment, replacement of worn connecting parts on the inner side of the trimming plate, and self-detection of the smooth surface of the trimming plate during the trimming process. This improves trimming efficiency when processing different blade leading edge angles.

[0029] like Figure 1 As shown, an embodiment of the present invention describes a wind turbine blade leading edge shaping fixture, including a shaping frame 1, a shaping plate 2, and a hand handle 3 set on the shaping frame. The shaping frame 1 and the shaping plate 2 are connected by fastening bolts 6 and adjusting bolts 4. The shaping plate 2 is located inside the shaping frame 1. A connector is installed on the inner side of the shaping plate 2 so that it can be replaced after wear. The hand handle is provided with a rubber sleeve for anti-slip when applying force.

[0030] Specifically, the fastening screw 6 is used to stabilize the connection between the shaping frame 1 and the shaping plate 2, and the adjusting bolt 4 is used to adjust the slight angular deviation of the shaping plate 1. The shaping frame 1 can be offset around the rotating shaft 5 at a large angle to achieve the adjustment of the leading edge angle of different blades.

[0031] like Figure 1 As shown, the shaping plate 2 has an arc-shaped structure and is made of elastic material. The fine adjustment of the shaping plate 2 changes through the arc-shaped part.

[0032] The two sides of the shaping plate 2 are in the form of inclined scrapers 14. The scrapers 14 are made of rigid material and can scrape away the excess material generated during the construction of the shaping plate 2. The plate is then leveled and adjusted by the connecting parts on the inner side of the shaping plate 2.

[0033] The shaping plate 2 has fixing blocks 13 at both ends for connecting the connector to the shaping plate 2. The connector can be sandpaper or abrasive block. The abrasive block can initially polish the surface of the leading edge of the shaped wind turbine blade, while the sandpaper can finely polish the surface of the initially polished leading edge of the wind turbine blade.

[0034] Both the shaping frame 1 and the shaping plate 2 are symmetrical structures, allowing workers to perform construction on both the left and right sides of the leading edge of the wind turbine blade through the shaping plate 2.

[0035] like Figure 1 As shown, the trimming frame is also machined with a limit post 9. The movement of the trimming plate 1 after the angle is adjusted is restricted by the connection between the limit hook 10 and the limit post 9, so as to prevent the angle of the trimming frame from changing during use.

[0036] This invention allows for a wider range of adjustments to the curvature formed by the trimming frame 1 and the trimming plate 2. The invention is detachable and facilitates the replacement of maintenance components. It is also small, portable, and does not take up much space. It is simple to operate, has an adjustable angle, and is highly flexible, allowing for adjustments to different curvatures as needed. This enables better trimming of the leading edge of wind turbine blades. Furthermore, this structure makes the straight-line trimming process during manual trimming of the leading edge of wind turbine blades less strenuous, thereby reducing the intensity of manual labor and avoiding the problem of large fluctuations in the quality of the leading edge of wind turbine blades due to human fatigue during long-term work.

[0037] The testing method for the above-mentioned modified molding process described in this application:

[0038] After removing the sandpaper or abrasive block from the shaping plate 2, the flatness of the blade leading edge can be initially inspected using the inner side of the shaping plate 2. Specifically, the sandpaper or abrasive block on the shaping plate 2 is removed, and the inner side of the shaping plate becomes a smooth plane. By observing the light transmittance when the inner side of the shaping plate 2 contacts the blade leading edge, a preliminary inspection of the appearance quality after shaping can be performed. The left and right symmetrical shaping plate 2 and shaping frame 1 can avoid the phenomenon of displacement and misalignment that easily occurs when only one side is inspected, which greatly improves the stability of the wind turbine blade leading edge inspection device.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind turbine blade leading edge resurfacing tool, characterised in that: It includes a trimming frame, a trimming plate, and a hand handle mounted on the trimming frame. The trimming frame and the trimming plate are connected by fastening bolts and adjusting bolts. The trimming plate is located inside the trimming frame, and a connector is installed on the inner side of the trimming plate so that it can be replaced after wear. The adjusting bolt passes through the shaping frame and is connected to the adjusting bolt nut; the fastening bolt passes through the shaping frame and is connected to the fastening bolt nut, both of which can prevent the bolt from shifting under stress. The inner surface of the shaping plate is a smooth plane, and the connector can be selected from sandpaper or abrasive blocks; The shaping frame is equipped with limit posts, and the movement of the shaping plate after the angle is adjusted is restricted by the connection between the limit hook and the limit posts; The two sides of the shaping frame can rotate around the pivot and be adjusted according to the change of the leading edge angle of the blade; The angle of the two trimming plates can be finely adjusted by adjusting the distance between the trimming plates and the trimming frame through adjusting the bolts, so as to better match the leading edge angle of the wind turbine blade.

2. A wind turbine blade leading edge reshaping tooling as claimed in claim 1, characterised in that: Both ends of the shaping plate are provided with fixing blocks for connecting the connector to the shaping plate.

3. A wind turbine blade leading edge reshaping tooling as claimed in claim 1, characterised in that: The curved portion of the shaping plate is an elastic structure.

4. A wind turbine blade leading edge reshaping tooling as claimed in claim 1, characterised in that: The sides of the shaping plate are rigid scrapers.

5. A wind turbine blade leading edge reshaping tooling as claimed in claim 1, characterised in that: The sandpaper or abrasive block is detachably connected to the shaping plate.

6. A wind turbine blade leading edge reshaping tooling as claimed in claim 1, characterised in that: The hand handle is equipped with a rubber sleeve for anti-slip when force is applied.

7. A method for detecting the profile of a wind turbine blade leading edge using a wind turbine blade leading edge profiling tool according to any one of claims 1-6, characterized in that, Includes the following steps: Remove the sandpaper or abrasive block from the shaping plate, making the inner surface of the shaping plate a smooth plane. Make contact between the leading edge of the wind turbine blade and the inner surface contour of the shaping plate. Observe the light transmittance when the inner surface of the shaping plate contacts the leading edge of the wind turbine blade. If light passes through the contact surface, the sandpaper or abrasive block needs to be reinstalled and the shaping process continued. Otherwise, it indicates that the shaping is qualified. A preliminary inspection of the flatness of the leading edge of the blade is conducted to determine the initial quality of the appearance after shaping.

Images