Tool for cleaning yaw brake pad of wind turbine generator and yaw brake disc assembly

Abstract

The utility model discloses a tool and yaw brake disc assembly of cleaning yaw brake pad of wind turbine generator, through the lathe tool is put into the basic groove, and the lathe tool part protrudes on the surface of yaw brake disc, when yaw, the yaw brake pad will be pasting the surface of yaw brake disc, above the lathe tool, the cutting edge of lathe tool will cut and remove the enamel hard layer of yaw brake pad surface, realize yaw brake pad cleaning, need not to remove yaw brake. The main technical scheme of the utility model is: a kind of tool of cleaning yaw brake pad of wind turbine generator of Jinfeng, including lathe tool, lathe tool includes first side and second side, the extension amount of lathe tool from first side to second side is greater than the height of basic groove, lathe tool is used to be embedded in basic groove by first side, to make the second side of lathe tool protrude on the surface of yaw brake disc, to clean yaw brake pad with yaw brake pad action and clean yaw brake pad. The utility model is mainly used for cleaning yaw brake pad.

Description

Technical Field

[0001] This utility model relates to the field of Goldwind wind turbine technology, and in particular to a tool for cleaning the yaw brake pads of Goldwind wind turbine units and a yaw brake disc assembly. Background Technology

[0002] With the optimization and adjustment of national policies on new energy, the wind power industry is developing strongly, and wind turbine units are becoming increasingly widespread. Wind turbine braking devices are also evolving in various forms along with the continuous development of wind turbines. Among them, hydraulic brakes, due to their compact structure, flexible control, and large braking torque, have become favored by major wind turbine manufacturers.

[0003] Although the hydraulic brake industry is booming, the inspection and maintenance technology for yaw brake pads is relatively lagging behind. During yaw, the carbon powder that falls off and the waste oil that drips during yaw leave a hard surface layer called enamel on the yaw brake pads after prolonged rolling. The accumulation of enamel will lead to the "sub-health" problem of abnormal noise in the yaw braking system. The generation of wind turbine noise not only indicates that the wind turbine has potential sub-health risks, but also has a significant impact on power generation. At the same time, because the units are hundreds of meters high, the noise travels a long distance and covers a wide area, seriously threatening the hearing health of people in the surrounding rural areas. Therefore, solving the noise problem of Goldwind wind turbines is urgent.

[0004] The current method to solve the glaze problem and eliminate noise is to disassemble the brakes and replace them with brand new yaw brake pads to restore the original normal coefficient of friction. However, the material cost of yaw brake pads is as high as 30,000 yuan, and each set of brakes weighs 300 kg. The disassembly and installation of the brakes is extremely difficult and complicated, resulting in long downtime, high power loss, and high maintenance costs. Utility Model Content

[0005] In view of this, in order to solve at least one of the above-mentioned technical problems, this utility model provides a tool for cleaning the yaw brake pads of Goldwind wind turbines and a yaw brake disc assembly.

[0006] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0007] On one hand, this utility model provides a tool for cleaning the yaw brake pads of a Goldwind wind turbine, used for a yaw brake disc (100), the yaw brake disc (100) having a base groove (101), and the tool includes:

[0008] The cutting tool (200) includes a first side and a second side. The extension of the cutting tool (200) from the first side to the second side is greater than the height of the base groove (101). The cutting tool (200) is used to be inserted into the base groove (101) from the first side so that the second side of the cutting tool (200) protrudes from the surface of the yaw brake disc (100) to interact with the yaw brake pad (300) to clean the yaw brake pad (300).

[0009] The cutting tool (200) includes at least a portion of the contour of the first side that is adapted to at least a portion of the contour of the inner wall of the base groove (101) so as to abut against the surface of the base groove (101) when embedded in the base groove (101).

[0010] The difference between the extension of the cutting tool (200) from the first side to the second side and the height of the base groove (101) is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0011] Among them, the cutting tool (200) has a long strip structure and the cross section of the cutting tool (200) is uniform in the length direction. The length direction of the cutting tool (200) is perpendicular to the direction of the cutting tool (200) from the first side to the second side.

[0012] Among them, a chip removal groove (201) is provided on the second side of the cutting tool (200), and the distance between the edge of the chip removal groove (201) on one side of the cutting tool (200) in the width direction and the first side of the cutting tool (200) is less than the height of the base groove (101).

[0013] The width direction of the cutting tool (200) is perpendicular to the length direction of the cutting tool (200) and perpendicular to the direction of the cutting tool (200) from the first side to the second side.

[0014] The distance between the chip removal groove (201) and the side wall of the cutting tool (200) on the other side of the width direction is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0015] The chip removal groove (201) passes through both ends of the cutting tool (200) along its length.

[0016] The chip removal groove (201) is an arc-shaped groove recessed into the first side of the cutting tool (200).

[0017] The lathe tool (200) is made of high-speed tool steel with a Rockwell hardness of 60 or higher.

[0018] On the other hand, the present invention also provides a yaw brake disc assembly, including the tool for cleaning the yaw brake pads of the Goldwind wind turbine as described above, and a yaw brake disc (100).

[0019] The yaw brake disc (100) is provided with a base groove (101) for accommodating part of the cutting tool (200).

[0020] The yaw brake disc (100) is provided with multiple basic groove groups, each basic groove group includes at least one basic groove (101), the basic groove (101) extends radially in the yaw brake disc (100), and the included angle of the basic grooves (101) in any adjacent basic groove groups is consistent.

[0021] At least one basic slot (101) in the basic slot group is a removable and placeable connecting tool (200).

[0022] This utility model proposes a tool and yaw brake disc assembly for cleaning the yaw brake pads of Goldwind wind turbines. A base groove is provided on the yaw brake disc, into which a cutting tool is placed, with the tool protruding above the surface of the yaw brake disc. During yaw, the yaw motor rotates, causing the nacelle to rotate, and the yaw brake, connected to the nacelle, to rotate. The yaw brake pads on the yaw brake, adhering to the surface of the yaw brake disc, pass over the cutting tool. The cutting edge of the tool, slightly protruding above the surface of the yaw brake disc, removes the hardened enamel layer on the surface of the yaw brake pads, keeping the surface smooth and free of contamination. This eliminates the noise generated by friction of the Goldwind wind turbine yaw brake pads without requiring the removal of the yaw brake, making cleaning the yaw brake pads convenient, reducing installation difficulty, and lowering cleaning costs. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a yaw brake disc provided for an embodiment of this utility model;

[0024] Figure 2 A first-view structural schematic diagram of a tool for cleaning the yaw brake pads of a Goldwind wind turbine provided in an embodiment of this utility model;

[0025] Figure 3 A schematic diagram of a tool for cleaning the yaw brake pads of a Goldwind wind turbine provided in an embodiment of this utility model from a second perspective;

[0026] Figure 4 A tool for cleaning the yaw brake pads of a Goldwind wind turbine and a yaw brake disc are provided as embodiments of this utility model. (Structure diagram from a first-view perspective)

[0027] Figure 5 A tool for cleaning the yaw brake pads of a Goldwind wind turbine and a structural schematic diagram of the yaw brake disc from a second-view perspective are provided for embodiments of this utility model.

[0028] Figure 6This utility model provides a schematic diagram of a tool for cleaning the yaw brake pads of a Goldwind wind turbine, a yaw brake disc, and yaw brake pads. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation method, structure, features, and effects of the tool for cleaning the yaw brake pads of Goldwind wind turbines proposed according to this utility model.

[0030] On the one hand, such as Figures 1-6 As shown, this utility model provides a tool for cleaning the yaw brake pads of a Goldwind wind turbine, used for a yaw brake disc (100), the yaw brake disc (100) having a base groove (101), and the tool includes:

[0031] The cutting tool (200) includes a first side and a second side. The extension H1 of the cutting tool (200) from the first side to the second side is greater than the height H2 of the base groove (101). The cutting tool (200) is used to embed into the base groove (101) from the first side so that the second side of the cutting tool (200) protrudes from the surface of the yaw brake disc (100) to interact with the yaw brake pad (300) and clean the yaw brake pad (300).

[0032] The yaw system of Goldwind wind turbines is used to adjust the orientation of the nacelle so that the rotor faces the wind direction, thereby improving power generation efficiency. The yaw brake is a crucial component of the wind turbine; it is connected to the nacelle, and the yaw brake disc (100) is connected to the tower. During yaw, the yaw motor rotates, causing the nacelle to rotate, which in turn drives the yaw brake connected to the nacelle. The yaw brake includes yaw brake pads (300). The yaw brake disc (100) remains stationary, while the yaw brake pads (300) move against the yaw brake disc (100), continuously acting on it to provide damping torque, ensuring smooth yaw and preventing vibration and resonance.

[0033] like Figure 1As shown, the yaw brake disc (100) has an annular disc structure, and the base groove (101) is a long strip groove. The base groove (101) is a radially arranged groove on the yaw brake disc (100) and is located on the upper surface of the yaw brake disc (100). When the yaw brake pads (300) are not being cleaned, the base groove (101) is used to accumulate carbon powder that is dropped due to the relative movement of the yaw brake disc (100) and the yaw brake pads (300). There can be multiple base grooves (101), which can be evenly arranged around the circumference of the yaw brake disc (100) or arranged in groups to achieve better containment of debris and avoid affecting the movement of the yaw brake pads (300).

[0034] The lathe tool (200) has a long, bar-like structure. For ease of description, as follows: Figures 2-3 As shown, the direction of extension of the length of the cutting tool (200) is called the length direction Y, the vertical direction of the cutting tool (200) during use is called the height direction Z, and the direction perpendicular to the length direction Y and the height direction Z is called the width direction X. The first side and the second side of the cutting tool (200) refer to the bottom side and the top side of the cutting tool (200), as shown. Figure 3 As shown, the extension H1 of the cutting tool (200) from the first side to the second side refers to the extension height of the cutting tool (200) in the height direction Z. When the cutting tool (200) is embedded in the base groove (101), the first side of the cutting tool (200) contacts the bottom of the base groove (101). Figure 4 As shown, the height extension H1 of the cutting tool (200) is greater than the height H2 of the base groove (101), which causes the top side of the cutting tool (200) to protrude beyond the upper surface of the yaw brake disc (100). The degree to which the top side of the cutting tool (200) protrudes beyond the upper surface of the yaw brake disc (100) in the length direction of the cutting tool (200), or in other words, in the length direction of the base groove (101), is uniform.

[0035] Before installing the cutting tool (200), clean the base groove (101) with a small brush, rag, and alcohol. Without disassembling the brake, insert the cutting tool (200) into the base groove (101), leaving only a small portion of the top side of the cutting tool (200) exposed on the upper surface of the yaw brake disc (100). Set the yaw brake pressure to 0 bar to release the pressure in the yaw brake, preventing residual pressure in the yaw brake during yaw, which would cause it to be in a semi-braking state and collide with the cutting tool (200), resulting in equipment damage. Manually operate the yaw mechanism. The yaw brake pad (300) will move with the yaw brake, passing over the cutting tool (200) while touching the yaw brake disc (100). The cutting edge, slightly higher than the upper surface of the yaw brake disc (100), will cut away the hardened enamel layer on the surface of the yaw brake pad (300). This method, which mimics the principle of a carpenter's plane, can remove the hard glaze formed by the mixture of carbon powder and waste oil on the surface of the yaw brake pad (300).

[0036] The lathe tool (200) is made of cuboid high-speed tool steel with a Rockwell hardness (HRC) of 60 or higher. Because cuboid high-speed tool steel with an HRC hardness of 60 or higher is particularly difficult to shape, there are currently only two machining methods: one is to slowly grind it into the desired shape using an angle grinder, and the other is to machine it using wire EDM on a lathe. The former method is time-consuming, with almost all the time spent on tool machining. The second method can be used because high-speed tool steel is particularly hard, even harder than the cutting edges machined on a typical lathe, so wire EDM can be used to machine the lathe tool (200). Using high-speed tool steel, compared to other metal materials such as iron, avoids the risk of the hardness being too low, which would prevent the removal of the enamel on the surface of the yaw brake pad (300), and also avoids the risk of breakage, while also reducing costs.

[0037] This utility model provides a tool and yaw brake disc assembly for cleaning the yaw brake pads of Goldwind wind turbines. A base groove is provided on the yaw brake disc, into which a cutting tool is placed, with the tool protruding above the surface of the yaw brake disc. During yaw, the yaw motor rotates, causing the nacelle to rotate, and the yaw brake, connected to the nacelle, to rotate. The yaw brake pads on the yaw brake, adhering to the surface of the yaw brake disc, pass over the cutting tool. The cutting edge of the tool, slightly protruding above the surface of the yaw brake disc, removes the hardened enamel layer from the surface of the yaw brake pads, keeping the surface smooth and free of contamination. This eliminates the noise generated by friction of the Goldwind wind turbine yaw brake pads without requiring the removal of the yaw brake, making cleaning the yaw brake pads convenient, reducing installation difficulty, and lowering cleaning costs.

[0038] In one embodiment, the cutting tool (200) includes at least a portion of the contour of a first side that is adapted to at least a portion of the contour of the inner wall of the base groove (101) to abut against the surface of the base groove (101) when embedded in the base groove (101).

[0039] If the base groove (101) is a square groove, the outline of the first side of the cutting tool (200) is a square column, with at least a planar bottom surface and a vertical side wall on the first side, so that the bottom surface and side wall of the cutting tool (200) abut against the bottom and inner vertical wall of the base groove (101), making the cutting tool (200) stable in the base groove (101) and not easy to shake.

[0040] In one embodiment, the difference between the extension H1 of the cutting tool (200) from the first side to the second side and the height H2 of the base groove (101) is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0041] That is, the height H1 of the cutting tool (200) from top to bottom in the height direction Z is 0.1mm-0.2mm greater than the height H2 of the base groove (101). For example, the height H1 of the cutting tool (200) can be 4.5mm, and the height H2 of the base groove (101) can be 4.4mm or 4.3mm. The top side of the cutting tool (200) is 0.1mm-0.2mm higher than the upper surface of the yaw brake disc (100). This ensures that the enamel surface layer of the yaw brake pad (300) can be removed, while keeping the yaw brake pad (300) from damage. It also protects the distance between the yaw brake pad (300) and the yaw brake disc (100) from being affected, thus avoiding new malfunctions.

[0042] The width of the cutting tool (200) can be the same as its height, such as 4.5 mm, or it can be smaller, such as 4 mm or 3.5 mm. The length of the cutting tool (200) can be equal to or slightly less than the length of the base groove (101), such as 15 cm.

[0043] In one embodiment, the cutting tool (200) has a long strip structure and the cutting tool (200) has a uniform cross section in the length direction Y. The length direction Y of the cutting tool (200) is perpendicular to the direction of the cutting tool (200) from the first side to the second side.

[0044] The cutting tool (200) has a uniform cross-section in the length direction Y, meaning that the profile of the cross-section perpendicular to the length direction Y is consistent at any position in the length direction Y. This ensures that the top side can protrude uniformly from the upper surface of the yaw brake disc (100) in the length direction Y, thereby achieving uniform cleaning of the yaw brake pad (300). In addition, in some embodiments, a chip removal groove (201) is provided on the second side of the cutting tool (200), and the uniform cross-section of the cutting tool (200) also achieves optimal utilization of the chip removal groove (201).

[0045] In one embodiment, a chip removal groove (201) is provided on the second side of the cutting tool (200). The chip removal groove (201) is a through groove that extends from the cutting tool (200) in the length direction Y to both ends in the length direction of the cutting tool (200).

[0046] The distance H3 of the chip removal groove (201) from one edge of the cutting tool (200) in the width direction to the first side of the cutting tool (200) is less than the height H2 of the base groove (101) and greater than 0. Figure 5 Taking the direction shown as an example, the distance H3 between the left edge of the chip removal groove (201) in the width direction X and the first side of the cutting tool (200) is small, thus making the left edge of the chip removal groove (201) in the width direction X located inside the chip removal groove (201) and not interacting with the yaw brake pad (300). The right edge of the chip removal groove (201) in the width direction X is located on the top surface of the second side of the cutting tool (200), used to contact the yaw brake pad (300) to achieve cleaning of the yaw brake pad (300). The right edge of the chip removal groove (201) in the width direction X, that is, the edge protruding from the upper surface of the yaw brake disc (100), is called the cutting edge or cutting edge.

[0047] like Figure 6 As shown, during cutting, the manual operation of the brake causes the yaw brake pad (300) to move relative to the yaw brake disc (100) along the V direction as shown in the figure. Then, the yaw brake pad (300) moves from the lower side of the chip removal groove (201) to the higher side, i.e., towards the cutting edge. In this way, after the cutting edge scrapes off the enamel from the yaw brake pad (300), it falls precisely into the chip removal groove (201), achieving enamel collection. This prevents the cut enamel from being blocked by the cutting tool (200) and remaining on the surface of the yaw brake disc (100), thus preventing the enamel from accumulating on the surface of the yaw brake disc (100) and hindering the movement of the yaw brake.

[0048] In one embodiment, the distance H4 between the chip removal groove (201) on the other side edge of the cutting tool (200) in the width direction X and the side wall of the cutting tool (200) in the same width direction is greater than or equal to 0.1 mm and less than or equal to 0.2 mm. That is, the distance between the cutting edge of the cutting tool (200) and the side wall of the cutting tool (200) is greater than or equal to 0.1 mm and less than or equal to 0.2 mm, thereby ensuring that the cutting edge of the cutting tool (200) has a certain hardness, avoiding the problem that a sharp cutting edge with insufficient strength is prone to deformation or wear, resulting in a decrease in height and inability to effectively clean the yaw brake pad (300).

[0049] In one embodiment, the chip removal groove (201) is an arc-shaped groove recessed into the first side of the cutting tool (200). For example, the chip removal groove (201) can be a semi-cylindrical groove with a diameter of 2mm ground from the tool steel, or it can be other shapes, such as an irregular cylindrical groove. The arc-shaped groove increases the volume of the chip removal groove (201), allowing it to hold more enamel and making processing more convenient.

[0050] On the other hand, such as Figures 4-6 As shown, this utility model also provides a yaw brake disc assembly, including the tool for cleaning the yaw brake pads of a Goldwind wind turbine as described above, and a yaw brake disc (100). The yaw brake disc (100) is provided with a base groove (101) for accommodating a portion of a cutting tool (200).

[0051] The yaw brake disc assembly has two states: a cleaning state, in which the cutting tool (200) is embedded in the base groove (101) to clean the yaw brake pads (300); and a working state, in which the cutting tool (200) is removed from the base groove (101), and the base groove (101) is then used to collect carbon dust generated by yaw. The yaw brake disc assembly includes any of the aforementioned tools for cleaning the yaw brake pads of Goldwind wind turbines. The advantages of including any of the aforementioned tools for cleaning the yaw brake pads of Goldwind wind turbines will not be elaborated here.

[0052] In one embodiment, the yaw brake disc (100) is provided with a plurality of basic groove groups, each basic groove group including at least one basic groove (101), the basic groove (101) extending radially on the yaw brake disc (100), and the included angle of the basic grooves (101) in any adjacent basic groove groups being consistent. At least one basic groove (101) in the basic groove group can accommodate a connecting cutting tool (200).

[0053] like Figure 1 and Figure 6As shown, there can be four base slot groups, each including two parallel base slots (101), with the included angle between the base slots (101) in two adjacent base slot groups being 90 degrees. One of the two base slots (101) in the base slot group is connected to a cutting tool (200). Only one base slot (101) is selected to install the cutting tool (200) to avoid material loss and reduce installation time. After the cutting tool (200) is installed, the four cutting tools (200) are arranged in a cross shape, that is, adjacent cutting tools (200) are at 90 degrees. Then, when cleaning the yaw brake pad (300), the wind turbine is manually operated to yaw and rotate 90 degrees. The yaw brake pad (300) can then rotate 90 degrees relative to the yaw brake disc (100) or any cutting tool (200). The cutting range of the four cutting tools (200) relative to the yaw brake pad (300) forms a 360° circle. A 90-degree yaw angle is sufficient to clean all yaw brake pads (300), making the operation convenient and quick. In some other implementations, only two cutting tools (200) can be used, with the two cutting tools (200) 180° apart. Then, by manually operating the wind turbine to yaw and rotate it 180 degrees, the cutting range of the two cutting tools (200) relative to the yaw brake pads (300) can form a 360° circle.

[0054] When the cutting tool (200) of this application is working, the cutting thickness, or the height of the cutting tool (200) above the upper surface of the yaw brake disc (100), can keep the yaw brake pad (300) from being damaged, quickly remove the hard enamel on the surface of the yaw brake pad (300), keep the surface of the yaw brake pad (300) smooth, thereby eliminating the noise generated by the friction between the yaw brake pad (300) and the yaw brake disc (100) due to the rough surface, and reducing the noise value to within the national noise standard value of 45dB. The table below shows example data comparing the cutting tool of this application with the prior art. This application, through innovative maintenance processes and tools, reduces maintenance time by more than 90% compared to the traditional and outdated brake pad replacement process in the industry, saving power outage losses of 6,600 yuan per unit. The entire process does not require disassembling the yaw brake or replacing new brake pads, giving previously scrapped brake pads a new lease on life and saving nearly 30,000 yuan per unit in brake pad spare parts costs, for a total cost saving of 990,000 yuan. Taking a 100MW wind farm as an example, it can create economic benefits of more than 1,073,000 yuan.

[0055]

[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A tool for cleaning the yaw brake pads of a wind turbine, characterized in that, For a yaw brake disc (100), the yaw brake disc (100) is provided with a base groove (101), the tool includes: A lathe tool (200) includes a first side and a second side, the extension of the lathe tool (200) from the first side to the second side being greater than the height of the base groove (101), the lathe tool (200) being used to embed into the base groove (101) from the first side, such that the second side of the lathe tool (200) protrudes from the surface of the yaw brake disc (100) to act with the yaw brake pad (300) to clean the yaw brake pad (300).

2. The tool for cleaning the yaw brake pads of a wind turbine as described in claim 1, characterized in that, The cutting tool (200) includes at least a portion of the contour of a first side that is adapted to at least a portion of the contour of the inner wall of the base groove (101) to abut against the surface of the base groove (101) when embedded in the base groove (101).

3. The tool for cleaning the yaw brake pads of a wind turbine as described in claim 1, characterized in that, The difference between the extension of the cutting tool (200) from the first side to the second side and the height of the base groove (101) is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

4. The tool for cleaning the yaw brake pads of a wind turbine as described in claim 1, characterized in that, The cutting tool (200) has a long strip structure and the cutting tool (200) has a uniform cross section in the length direction. The length direction of the cutting tool (200) is perpendicular to the direction of the cutting tool (200) from the first side to the second side.

5. The tool for cleaning the yaw brake pads of a wind turbine as described in claim 1, characterized in that, A chip removal groove (201) is provided on the second side of the cutting tool (200). The distance between the chip removal groove (201) and the first side of the cutting tool (200) on one side edge in the width direction is less than the height of the base groove (101). The width direction of the cutting tool (200) is perpendicular to the length direction of the cutting tool (200) and perpendicular to the direction of the cutting tool (200) from the first side to the second side.

6. The tool for cleaning yaw brake pads of a wind turbine according to claim 5, characterized in that, The distance between the chip removal groove (201) on the other side edge of the cutting tool (200) in the width direction and the side wall on the same side of the cutting tool (200) in the width direction is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

7. The tool for cleaning the yaw brake pads of a wind turbine according to claim 5, characterized in that, The chip removal groove (201) extends through both ends of the cutting tool (200) along its length. The chip removal groove (201) is an arc-shaped groove recessed towards the first side of the cutting tool (200).

8. The tool for cleaning the yaw brake pads of a wind turbine according to claim 1, characterized in that, The cutting tool (200) is made of high-speed tool steel with a Rockwell hardness of 60 or higher.

9. A yaw brake disc assembly, characterized in that, The tool for cleaning the yaw brake pads of a wind turbine as described in any one of claims 1-8, and the yaw brake disc (100). The yaw brake disc (100) is provided with a base groove (101) for accommodating part of the cutting tool (200).

10. The yaw brake disc assembly according to claim 9, characterized in that, The yaw brake disc (100) is provided with a plurality of basic groove groups, each of the basic groove groups including at least one basic groove (101), the basic groove (101) extends radially on the yaw brake disc (100), and the included angle of the basic grooves (101) in any adjacent basic groove groups is the same. At least one of the base slots (101) in the base slot group is removable and connectable to the cutting tool (200).

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