Cutter special for patching machining of wind power composite blade

Abstract

The utility model provides a special cutter for patching processing of a wind power composite blade, which comprises a cutter head, a rotating shaft, a motor, a fan-shaped protective cover, a machine body and a handle arranged on the machine body, the output end of the motor is connected with the rotating shaft, the other end of the rotating shaft is in pin joint with the cutter head, and the fan-shaped protective cover is arranged above the side of the cutter head; the tool bit is of a stepped structure or a trapezoidal structure; the tool bit comprises a plurality of cutting edges, and a material returning groove is formed between every two adjacent cutting edges. According to the utility model, shape follow-up processing and patching are realized, the digging quality of a damaged area is improved, digging damage is reduced, and then the repairing quality is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a special tool for patching wind power composite blades. Background Art

[0002] Wind turbines are wind power generation equipment, and their blades are the core components that capture wind energy. Blade reliability is essential for ensuring safe operation. With the continuous increase in unit capacity, wind turbine blade diameters are expanding to hundreds of meters. Common blade materials are glass fiber or carbon fiber. Because wind turbines operate in the field, subject to loads such as bending, torsion, and natural vibration, as well as external erosion and impact, they are prone to various types of damage. Cracks and breakage in the leading and trailing edge casings near the blade root are the primary cause of blade breakage. These issues require inspection and repair through patching to avoid catastrophic failures. Manual patching requires long, high-altitude work, is risky, and inefficient, resulting in prolonged wind turbine downtime and making it uneconomical and impractical. Alternatively, in-situ repair tools or fixtures can be used to perform positioning, patching, movement, and assist in patch placement, enabling automated or semi-automated repair. In automated repair processes, high-quality removal of damaged areas is essential for ensuring high-quality blade repair. Therefore, the present invention proposes a specialized tool for wind turbine blade repair. Utility Model Content

[0003] The embodiment of the utility model provides a special tool for cutting and patching wind power composite blades, which solves the problem of how to improve the quality of cutting, reduce the damage caused by cutting, and improve the quality of repair.

[0004] The utility model provides a special tool for patching wind power composite blades, the tool comprising a cutter head, a rotating shaft, a motor, a fan-shaped protective cover, a fuselage, a handle arranged on the fuselage and a visual detection device, the output end of the motor is connected to the rotating shaft, the other end of the rotating shaft is pin-connected to the cutter head, the fan-shaped protective cover is arranged on the upper side of the cutter head; the cutter head is a stepped structure or a trapezoidal structure; the cutter head comprises a plurality of blades, and there is a material withdrawal groove between adjacent blades, the visual detection device comprises a detector, a processor and a display, the detector is coaxially arranged with the rotating shaft, and the display is arranged on the fuselage; a visual perception device is provided in the detector to obtain the damage type, damage structure and damage range of the damaged area; and a storage box is also included, the storage box is connected to the fuselage and is arranged on the lower side of the cutter head.

[0005] Optionally, it also includes a positioning mechanism, which includes a positioning column and an eyepiece, and the positioning columns include at least three. The eyepiece includes anchor points corresponding to the number of the positioning columns, and the positioning columns are moved so that the anchor points coincide with the positioning columns; the eyepiece is electrically connected to the visual detection device.

[0006] Optionally, the detector is connected to the motor signal to control the motor to cut according to a preset cutting trajectory.

[0007] Optionally, a prepreg injection mechanism is further included, wherein the prepreg injection mechanism is arranged on the fuselage, and the liquid outlet pipe is arranged opposite to the side of the cutter head.

[0008] Optionally, the cutter head includes at least two layers of blades, and the cutting diameters of the multiple layers of blades are set according to a preset gradient.

[0009] The beneficial effects of the present invention are:

[0010] The utility model provides a special tool for cutting and patching composite blades of wind power, comprising a cutter head, a rotating shaft, a motor, a fan-shaped protective cover, a fuselage, and a handle provided on the fuselage. The output end of the motor is connected to the rotating shaft, and the other end of the rotating shaft is pinned to the cutter head. The fan-shaped protective cover is provided on the upper side of the cutter head, that is, the operator holds the special tool from the handle, and the motor drives the rotating shaft to rotate the cutter head to cut the blade, and the fan-shaped protective cover is used to collect the flying chips. The cutter head has a stepped structure or a trapezoidal structure, and the cutter head includes multiple blades, and there is a material withdrawal groove between adjacent blades. The cutter head with a stepped structure or a trapezoidal structure can form an inwardly concave stepped cutting structure. This structure suppresses the damage to the normal area of ​​the blade caused by the rotation and vibration of the cutter head when cutting the damaged area, that is, reduces the expansion of the damaged area, improves the quality of the excavation of the damaged area, reduces the excavation damage, and then improves the repair quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram showing the front portion of a special tool for patching wind power composite blades provided by the present application;

[0012] Figure 2 It is a schematic diagram of the front structure of the cutter head in the embodiment of the present application.

[0013] Reference numerals:

[0014] 1: Cutter head; 2: Rotating shaft; 3: Motor. DETAILED DESCRIPTION

[0015] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention, with reference to the accompanying drawings. Furthermore, the phrases "in one embodiment" or "in an embodiment" appearing throughout this specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0016] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity from another, and do not necessarily require or imply any actual relationship or order between these entities. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that an article or terminal device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the article or terminal device comprising the element.

[0017] The composite blades of wind turbines will be damaged locally as they are used for a longer time or due to changes in the climate and environment. In order to extend the service life of the blades, it is necessary to remove the damaged structure and repair the damaged parts. On the one hand, the existing repair method is manual excavation and patching. This method requires long-term high-altitude work with a high risk factor, and the maintenance efficiency is slow, resulting in long downtime of the wind turbine, which is not economical and practical. On the other hand, the positioning, excavation, movement, and auxiliary patching are completed by tools or tooling for in-situ repair, that is, automated or semi-automated repair is achieved. In the automated repair process, high-quality excavation of the damaged area cannot be guaranteed. When the damaged material is excavated, the damaged area will be expanded, or new damaged areas will be created at the edge of the excavated area, which not only affects the subsequent repair work, but also affects the durability of the blades after repair. Therefore, the utility model proposes a special tool for wind turbine blade repair, which improves the cutting quality by optimizing the tool.

[0018] Specifically, such as Figure 1 and Figure 2 As shown, the utility model provides a special tool for patching wind power composite blades, which includes a cutter head 1, a rotating shaft 2, a motor 3, a fan-shaped protective cover, a fuselage, and a handle arranged on the fuselage. The output end of the motor 3 is connected to the rotating shaft 2, and the other end of the rotating shaft 2 is pin-connected to the cutter head 1. The fan-shaped protective cover is arranged on the upper side of the cutter head 1; the cutter head 1 has a stepped structure or a trapezoidal structure; the cutter head 1 includes multiple blades, and there is a material withdrawal groove between adjacent blades.

[0019] The utility model provides a special tool for repairing wind power composite blades, including a cutter head 1, a rotating shaft 2, a motor 3, a fan-shaped protective cover, a fuselage, and a handle provided on the fuselage. The output end of the motor 3 is connected to the rotating shaft 2, and the other end of the rotating shaft 2 is pinned to the cutter head 1. The fan-shaped protective cover is provided on the upper side of the cutter head 1, that is, the operator holds the special tool from the handle, and the motor 3 drives the rotating shaft 2 to rotate so that the cutter head 1 rotates to cut the blade, and the fan-shaped protective cover is used to collect the flying chips. Among them, the cutter head 1 has a stepped structure or a trapezoidal structure, and the cutter head 1 includes multiple blades, and there is a material withdrawal groove between adjacent blades. The cutter head 1 with a stepped structure or a trapezoidal structure can form an inwardly concave stepped cutting structure. This structure suppresses the damage to the normal area of ​​the blade caused by the rotation and vibration of the cutter head 1 when cutting the damaged area, that is, it reduces the expansion of the damaged area, improves the quality of the excavation of the damaged area, reduces the excavation damage, and then improves the repair quality.

[0020] In addition, the utility model also includes a visual detection device, including a detector, a processor and a display. The detector is coaxially arranged with the rotating shaft 2, and the display is arranged on the fuselage; a visual perception device is provided in the detector to obtain the damage type, damage structure and damage range of the damaged area.

[0021] The detector in this utility model can detect the specific damage range, damage depth, and material properties of the damaged area requiring repair. Based on these detection parameters, the volume to be removed is determined. The center of the damage is then located and removed, following a stepped structure. This ultimately creates a concave stepped repair area. This area is then filled with other filling tools and then melted and fixed to complete the repair. The visual detection device also includes auxiliary lighting to enhance the visual imaging quality of the detector, resulting in a blade damage recognition method that combines controllable lighting with deep learning.

[0022] In some embodiments, a positioning mechanism is further included, comprising positioning posts and an eyepiece. The eyepiece includes at least three positioning posts. The eyepiece includes anchor points corresponding to the number of positioning posts. The positioning posts are moved so that the anchor points align with the positioning posts. The eyepiece is electrically connected to the visual inspection device. To increase the accuracy of positioning and measurement of the area to be repaired, a positioning mechanism is provided. The positioning mechanism comprises at least an eyepiece and three positioning posts. Positioning is completed by aligning the anchor points in the eyepiece with the positioning posts, and measurement and inspection can then be performed.

[0023] In addition, the detector for detecting the damaged area is connected to the motor signal of the driving cutter head 1 to control the motor to cut according to the preset cutting trajectory.

[0024] This embodiment also includes a prepreg injection mechanism, which is arranged on the fuselage, and the liquid outlet is arranged opposite to the side of the cutter head 1. The prepreg not only lubricates the cutter head 1, but also protects the blades, preventing the cutter head 1 from damaging the blades outside the cutting area.

[0025] In addition, it also includes a storage box, which is connected to the machine body and is arranged on the side and lower part of the cutter head 1. The storage box is used to temporarily store chips and cooperates with the fan-shaped protective cover to collect the waste coming out of the material return chute.

[0026] In other embodiments, the cutter head 1 includes at least two layers of blades, with the cutting diameters of the multiple layers arranged according to a preset gradient. This layered arrangement of blades not only creates a concave stepped structure, creating repair pits of varying diameters, but also reduces the risk of excessive vibration of the cutter head 1, which could damage the material surrounding the cutting area. The specific dimensions of the layered blades are related to the actual damage parameters of the area to be repaired and are not specifically limited in this embodiment.

[0027] Finally, the present invention provides a special tool for patching composite wind turbine blades. The tool comprises a cutter head 1, a rotating shaft 2, a motor 3, a fan-shaped protective cover, a body, and a handle mounted on the body. The output end of the motor 3 is connected to the rotating shaft 2, the other end of which is pinned to the cutter head 1. The fan-shaped protective cover is mounted above and to the side of the cutter head 1. The cutter head 1 has a stepped or trapezoidal structure and includes multiple blades, with material return slots between adjacent blades. The present invention implements contour-based patching, improving the quality of the damaged area, reducing damage from the patching, and thus improving the quality of the repair.

[0028] The above-described embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A special tool for patching wind power composite blades, characterized in that: The tool comprises a cutter head (1), a rotating shaft (2), a motor (3), a fan-shaped protective cover, a body, a handle arranged on the body, and a visual detection device, wherein the output end of the motor (3) is connected to the rotating shaft (2), the other end of the rotating shaft (2) is pin-connected to the cutter head (1), and the fan-shaped protective cover is arranged on the upper side of the cutter head (1); the cutter head (1) is a stepped structure or a trapezoidal structure; the cutter head (1) comprises a plurality of blades, and a material withdrawal groove is provided between adjacent blades; the visual detection device comprises a detector, a processor, and a display, the detector is coaxially arranged with the rotating shaft (2), and the display is arranged on the body; a visual perception device is provided in the detector to obtain the damage type, damage structure, and damage range of the damaged area.

2. The special tool for patching wind power composite blades according to claim 1, characterized in that: It also includes a positioning mechanism, which includes a positioning column and an eyepiece. There are at least three positioning columns. The eyepiece includes anchor points corresponding to the number of the positioning columns. The positioning columns are moved so that the anchor points coincide with the positioning columns. The eyepiece is electrically connected to the visual detection device.

3. The special tool for patching wind power composite blades according to claim 1, characterized in that: The detector is connected to the motor (3) via signals to control the motor (3) to cut according to a preset cutting trajectory.

4. The special tool for patching wind power composite blades according to claim 3 is characterized in that: It also includes a prepreg injection mechanism, which is arranged on the fuselage, and the liquid outlet pipe is arranged opposite to the side of the cutter head (1).

5. The special tool for patching wind power composite blades according to claim 1, characterized in that: It also includes a material storage box, which is connected to the machine body and is arranged on the lower side of the cutter head (1).

6. The special tool for patching wind power composite blades according to claim 5, characterized in that: The cutter head (1) comprises at least two layers of blades, and the cutting diameters of the multiple layers of blades are set according to a preset gradient.

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