A rust removal device for a yaw system friction disc and a yaw system

Abstract

The embodiment of the application provides a rust removal device of a yaw system friction disc and a yaw system, and belongs to the technical field of wind turbine yaw systems. The rust removal device of the yaw system friction disc comprises a support body, two polishing parts are arranged on the support body in a height direction, and the two polishing parts are respectively provided with polishing pieces on opposite sides. The polishing pieces are configured to polish the friction surface of the friction disc of the yaw system. Each polishing part is provided with an elastic component connected with the polishing piece, and the elastic component has an elastic force for driving the polishing piece to press against the friction disc. The rust removal device of the yaw system friction disc provided by the embodiment of the application ensures uniform polishing pressure of the polishing piece by using the elastic component. The polishing piece driven by the elastic component can also closely contact the surface of the friction disc, so that the rust on the friction surface of the friction disc can be contacted and polished by the polishing piece, and the polishing effect is ensured.

Description

Technical Field

[0001] This application relates to wind turbine yaw system technology, and more particularly to a rust removal device for the friction disc of a yaw system and a yaw system. Background Technology

[0002] The yaw system, also known as the wind alignment device, is part of the nacelle of a wind turbine generator. Its function is to quickly and smoothly align the nacelle with the wind direction when the wind speed vector changes, so that the wind turbine in the nacelle can obtain the maximum wind energy.

[0003] The yaw system is equipped with several yaw brakes, which use the friction discs of the yaw brakes to generate resistance and prevent the wind turbine generator from oscillating and displacing during yaw.

[0004] In related technologies, the friction disc surface of the yaw brake is an exposed structure. If moisture is present in the engine room during storage or operation, it is prone to corrosion. Corrosion of the friction disc can cause abnormal yaw noise or vibration failure, affecting the normal operation of the yaw system. Utility Model Content

[0005] This application provides a rust removal device for the friction disc of a yaw system and a yaw system, to solve the problem that the friction disc of the yaw brake is prone to rust, which leads to abnormal yaw noise or vibration failure.

[0006] On the one hand, this application provides a rust removal device for a yaw system friction disc, comprising:

[0007] Support the main body;

[0008] Two grinding sections are spaced apart on the support body along the height direction. Grinding discs are provided on opposite sides of the two grinding sections. The grinding discs are configured to grind the friction surface of the friction disk of the yaw system.

[0009] Each of the grinding sections is provided with an elastic component connected to the grinding disc, and the elastic component has an elastic force that drives the grinding disc to press against the friction disc.

[0010] In some possible implementations, the elastic component includes a plurality of butterfly spring groups connected in series, with at least two adjacent butterfly spring groups having opposite mounting directions.

[0011] In some possible implementations, the butterfly spring assembly includes at least two butterfly springs with the same mounting direction, and in a plurality of butterfly spring assemblies, any two adjacent butterfly spring assemblies have opposite mounting directions.

[0012] In some possible implementations, the polishing section includes:

[0013] The mounting housing has an internal cavity, and the elastic component is located in the cavity;

[0014] The mounting housing is provided with a first cover and a second cover on opposite sides to close the cavity, and the first cover is connected to the grinding disc.

[0015] The first cover is embedded in the mounting housing and can slide along the axial direction of the mounting housing, while the second cover is threadedly connected to the mounting housing.

[0016] In some possible implementations, the mounting housing is provided with a connecting post, one end of which is connected to the first cover, and the connecting post is used to connect multiple butterfly spring groups in series.

[0017] In some possible implementations, it also includes:

[0018] A connecting bracket is connected to the side of the support body opposite to the friction disc. The connecting bracket has two sets of connectors arranged opposite to each other. The connectors are used to connect to the yaw brake.

[0019] In some possible implementations, the two sets of connectors are arranged symmetrically, each set of connectors having two connection ends spaced apart, both of which are connected to the yaw brake.

[0020] In some possible implementations, the connecting bracket further includes a connecting block connected to the two sets of connectors, the connecting block being connected to the support body via fasteners that pass through both.

[0021] In some possible implementations, the connecting block has rollers on the side facing the friction disc.

[0022] On the other hand, this application also provides a yaw system, including a yaw brake, a friction disc, and a rust removal device for the friction disc of the yaw system as described in any of the preceding claims; the yaw brake is disposed on the annular edge side of the friction disc.

[0023] The rust removal device and yaw system for the friction disc of the yaw system provided in this application have two grinding sections arranged vertically and horizontally with grinding discs positioned opposite each other. This allows for synchronous and precise action on the two friction surfaces of the friction disc, resulting in a symmetrical grinding effect and efficient rust removal. In addition, each grinding section is equipped with an elastic component, which has an elastic force that drives the grinding disc to press against the brake friction disc. Thus, the elastic component can adapt to slight thickness differences on the surface of the friction disc, ensuring uniform grinding pressure and avoiding scratches or excessive wear on the friction disc caused by rigid impact grinding. The grinding disc driven by the elastic component can also closely adhere to the surface of the friction disc, ensuring that all rust on the friction surface of the friction disc can be removed by the grinding disc, thus guaranteeing the grinding effect. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 This is a schematic diagram of the rust removal device for the friction disc of the yaw system in an embodiment of this application;

[0026] Figure 2 for Figure 1 A structural diagram from another angle;

[0027] Figure 3 for Figure 1 Partial structural sectional view;

[0028] Figure 4 This is a schematic diagram of the elastic component of the rust removal device for the yaw system friction disc in the embodiments of this application;

[0029] Figure 5 This is a schematic diagram of the connecting bracket of the rust removal device for the yaw system friction disc in the embodiments of this application;

[0030] Figure 6 This is a partial structural diagram of the yaw system in an embodiment of this application.

[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments.

[0032] Explanation of reference numerals in the attached figures

[0033] 100 - Support body;

[0034] 200 - Grinding Department;

[0035] 210 - Grinding disc; 220 - Elastic component; 221 - Disc spring assembly;

[0036] 230 - Mounting housing; 240 - First cover; 250 - Second cover; 260 - Connecting post;

[0037] 300 - Connecting bracket;

[0038] 310 - Connector; 311 - Connecting end; 320 - Connecting block; 321 - Roller;

[0039] 400-Friction Disc;

[0040] 500-Yaw Brake. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0045] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0046] Wind turbines are one of the most important pieces of equipment in wind power generation. The wind-catching effect of the rotor is crucial to the power generation performance of a wind turbine. To improve the wind-catching effect, the rotor should always be facing the wind. Therefore, wind turbines are equipped with a yaw system. The yaw system allows for relative rotation between the nacelle and the tower, ensuring accurate rotor positioning and maximizing the use of wind energy for power generation.

[0047] The yaw system is equipped with several yaw brakes, which use the friction discs of the yaw brakes to generate resistance and prevent the wind turbine generator from oscillating and displacing during yaw.

[0048] In related technologies, the friction disc surface of the yaw brake is an exposed structure. If moisture is present in the engine room during storage or operation, it is prone to corrosion. Corrosion of the friction disc can cause abnormal yaw noise or vibration failure, affecting the normal operation of the yaw system.

[0049] Based on this, one or more embodiments of this application provide a rust removal device for a yaw system friction disc and a yaw system.

[0050] In the rust removal device for the friction disc of the yaw system, by arranging two grinding sections vertically at intervals and setting the grinding discs opposite each other, the two friction surfaces of the friction disc can be acted synchronously and precisely, forming a double-sided symmetrical grinding effect for efficient rust removal. In addition, each grinding section is equipped with an elastic component, which has an elastic force to drive the grinding discs to press against the brake friction disc. Thus, the elastic component can adapt to slight thickness differences on the surface of the friction disc, ensuring uniform grinding pressure and avoiding scratches or excessive wear on the friction disc caused by rigid impact grinding. The grinding discs driven by the elastic component can also fit tightly against the surface of the friction disc, so that the rust on the friction surface of the friction disc can be removed by the grinding discs, ensuring the grinding effect.

[0051] The following description, in conjunction with the accompanying drawings, illustrates the solutions of the embodiments of this application.

[0052] like Figure 1 and Figure 2 As shown in the figure, this application provides a rust removal device for a yaw system friction disc, including a support body 100 and two grinding parts 200.

[0053] Two grinding sections 200 are spaced apart on the support body 100 along the height direction. Grinding discs 210 are respectively provided on opposite sides of the two grinding sections 200. The grinding discs 210 are configured as the friction surfaces of the grinding friction disk 400. Each grinding section 200 is provided with an elastic component 220 connected to the grinding disc 210. The elastic component 220 has an elastic force that drives the grinding disc 210 to press against the friction disk 400.

[0054] As can be seen from the above description, the rust removal device for the yaw system friction disc provided in this application embodiment has an elastic component 220 in the grinding section 200. The elastic component 220 drives the grinding disc 210 to press against the friction disc 400. The grinding pressure of the grinding disc 210 on the friction disc 400 is uniform, avoiding rigid impact grinding that could cause scratches or excessive wear on the friction disc 400. The grinding disc 210 driven by the elastic component 220 can also fit tightly against the surface of the friction disc 400, so that all rust on the friction surface of the friction disc 400 can be removed by the grinding disc 210, ensuring the grinding effect.

[0055] like Figure 3 and Figure 4 As shown in the embodiment of this application, the elastic component 220 includes a plurality of butterfly spring groups 221 connected in series, and at least two adjacent butterfly spring groups 221 are installed in opposite directions.

[0056] Furthermore, the butterfly spring assembly 221 includes at least two butterfly springs with the same mounting direction, and in the plurality of butterfly spring assemblies 221, any two adjacent butterfly spring assemblies 221 have opposite mounting directions.

[0057] The disc spring itself has high stiffness and strong load-bearing capacity. Each disc spring group 221 can be equipped with three or more disc springs, thereby increasing the overall elastic stroke of the elastic component 220 while maintaining a high load-bearing capacity.

[0058] The disc spring itself has a raised surface and a recessed surface. In the embodiments of this application, the installation direction is consistent, which means that the raised surface or the recessed surface of the disc spring is arranged in the same direction. The installation direction is opposite, which means that the raised surface of one disc spring is opposite to the raised surface of another disc spring, or the recessed surface of one disc spring is opposite to the recessed surface of another disc spring.

[0059] When one set of butterfly springs 221 is compressed, the adjacent set of butterfly springs 221 installed in the opposite direction will produce a complementary deformation response. As a result, the elastic pressure applied by the grinding disc 210 to the friction disc 400 through the elastic component 220 is more stable, and the grinding effect is avoided when the friction disc 400 is uneven or has slight displacement.

[0060] In addition, the use of a butterfly spring assembly 221, compared to using a regular spring, ensures that the elastic pressure is applied directly and perpendicularly to the grinding disc 210, so that the grinding disc 210 grinds the friction surface of the friction disk 400 perpendicularly. This ensures that the grinding pressure distribution of the grinding disc 210 is uniform and consistent, avoiding the problems of warping and uneven pressure of the grinding disc 210 caused by spring deformation when using a spring.

[0061] For example, each set of butterfly springs 221 includes three or more butterfly springs, and the butterfly springs in each set of butterfly springs 221 are installed in the same direction. Thus, each set of butterfly springs 221 constitutes a small elastic unit, and multiple sets of butterfly springs 221 together form an elastic component 220.

[0062] The disc spring assembly 221 comprises multiple disc springs. The stacked disc springs in the same direction distribute the load more evenly, reducing the stress peak of a single disc spring and helping to delay its fatigue failure. Furthermore, multiple disc spring assemblies 221 connected in series form an elastic component 220. If an individual disc spring in a single disc spring assembly 221 fails, the remaining disc spring assemblies 221 can still provide elastic force, which helps prevent the rust removal device from affecting the grinding effect due to the failure of one disc spring.

[0063] like Figure 3 As shown in the embodiment of this application, the grinding part 200 includes a mounting housing 230, which has a cavity inside, and the elastic component 220 is located in the cavity; a first cover 240 and a second cover 250 that close the cavity are respectively provided on opposite sides of the mounting housing 230, and the first cover 240 is connected to the grinding disc 210; wherein, the first cover 240 is embedded in the mounting housing 230 and can slide along the axial direction of the mounting housing 230, and the second cover 250 is threadedly connected to the mounting housing 230.

[0064] The aforementioned support body 100 can be made of rigid metal pads. The support body 100 and the mounting housing 230 are welded and fixedly connected, or fixedly connected by bolts. The mounting housing 230 is a cylindrical body with both ends through it. The two ends of the mounting housing 230 are respectively provided with a first cover 240 and a second cover 250. The sealed cavity provides a protective space for the internal elastic component 220, preventing external rust, dust and oil from entering the cavity and contaminating the elastic component 220.

[0065] For example, the first cover 240 is directly embedded inside the mounting housing 230. The outer diameter of the first cover 240 is slightly smaller than the inner diameter of the mounting housing 230. When the first cover 240 is subjected to external pressure, it is pushed and slid relative to the mounting housing 230. The grinding disc 210 can be a friction rust removal component with high rigidity and high surface roughness in related technologies, such as ceramic alumina, diamond, or silicon carbide. The grinding disc 210 is locked to the first cover 240 with screws, thereby causing the grinding disc 210 to slide synchronously with the first cover 240.

[0066] Since the second cover 250 is threadedly connected to the mounting housing 230, the two ends of the elastic component 220 abut against the first cover 240 and the second cover 250 respectively. During the process of the second cover 250 being screwed into the mounting housing 230, pressure is applied to the elastic component 220. The elastic component 220 pushes the first cover 240 out along the axial direction of the mounting housing 230. As a result, the grinding disc 210 on the first cover 240 has a tendency to move towards the surface of the friction disk 400. The first cover 240 is also constrained and limited between the surface of the friction disk 400 and the mounting housing 230. The freely sliding first cover 240 can adjust its position slightly with the undulation of the surface of the friction disk 400, so as to always maintain the contact state between the grinding disc 210 and the friction surface of the friction disk 400.

[0067] In the above embodiments, by adjusting the screw-in depth of the second cover 250 into the mounting housing 230, the initial pre-compression of the elastic component 220 can be adjusted, thereby facilitating the setting of the reference grinding pressure of the grinding disc 210 on the friction disk 400. When disassembling the rust removal device, the elastic component 220 and the first cover 240 can be removed sequentially by simply unscrewing the second cover 250, without disassembling the entire rust removal device. Disassembly is simple and convenient, facilitating the replacement of the grinding disc 210.

[0068] like Figure 3 As shown, in some embodiments, the mounting housing 230 is provided with a connecting post 260, one end of which is connected to the first cover 240. The connecting post 260 is used to connect multiple butterfly spring groups 221 in series.

[0069] The connecting post 260 can be a metal cylinder. The butterfly springs in the multiple butterfly spring groups 221 are connected in series coaxially through the connecting post 260. Here, the diameter of the main body and the inner hole of the butterfly spring are fitted with a clearance to ensure the free displacement of the butterfly spring while limiting its radial offset, so as to avoid the butterfly spring from becoming unstable and warping and affecting the grinding pressure.

[0070] It should be noted that the length of the connecting post 260 should not exceed the length of the entire elastic component 220. That is, one end of the elastic component 220 abuts against the first cover 240 and the other end abuts against the second cover 250. At least one end of the connecting post 260 does not abut against the cover. This arrangement can prevent the connecting post 260 from affecting the elastic stroke of the elastic component 220 and ensure that the elastic pressure on the grinding disc 210 is uniform.

[0071] like Figure 2 and Figure 5 As shown, the rust removal device in this embodiment of the application also includes a connecting bracket 300, which is connected to the side of the support body 100 away from the friction disc 400. The connecting bracket 300 has two sets of connecting members 310 arranged opposite to each other, and the connecting members 310 are used to connect to the yaw brake 500.

[0072] Specifically, the two sets of connectors 310 on the connecting bracket 300 are arranged symmetrically, and each set of connectors 310 has two connecting ends 311 spaced apart, both of which are connected to the yaw brake 500.

[0073] The connecting bracket 300 can be made of stainless steel alloy. The two sets of connecting parts 310 of the connecting bracket 300 are distributed around the perimeter. The connecting bracket 300 is located on the side of the support body 100 away from the friction disc 400, which can avoid the grinding operation space and prevent the grinding disc 210 from interfering with the installation space of the connecting bracket 300.

[0074] The aforementioned connecting end 311 is a mounting opening provided on the connector 310. The connecting end 311 is connected to the yaw brake 500 by a lifting eye bolt, thereby fixing the rust removal device to the yaw system. Here, the two sets of connectors 310 are symmetrically arranged, and each set of connectors 310 has two connecting ends 311 spaced apart, which can enhance the structural stability of the rust removal device and prevent the grinding part 200 from being pulled and displaced when grinding the friction disc 400.

[0075] In some embodiments, the connecting bracket 300 further includes a connecting block 320 connected to two sets of connectors 310, and the connecting block 320 is connected to the support body 100 by fasteners that pass through both of them.

[0076] The connecting block 320 serves as a common base for the two sets of connectors 310, integrating the anchoring forces of the four connecting ends 311 of the two sets of connectors 310 into a single load-bearing point. The connecting block 320 of the connecting bracket 300 can be a hollow or solid rectangular rigid block. The connecting block 320 is connected to the support body 100 through common fasteners, thereby fixing the connecting bracket 300 to the support body 100. The detachable connection between the connecting block 320 and the support body 100 facilitates the disassembly of the connecting bracket 300, thus facilitating the assembly and disassembly of the entire rust removal device.

[0077] For example, such as Figure 2 As shown, the connecting block 320 has a roller 321 on the side facing the friction disk 400. The roller 321 is used to abut against the inner side of the friction disk 400 to improve the smoothness of the rust removal device and the friction disk 400.

[0078] Another embodiment of this application also provides a yaw system, such as Figure 6 As shown, a yaw brake 500, a friction disc 400, and a rust removal device for the yaw system friction disc as described in any of the above embodiments are included; the yaw brake 500 is located on the annular edge side of the friction disc 400.

[0079] Since the yaw system of this application embodiment includes the rust removal device for the yaw system friction disc as in any of the above embodiments, it has all the advantages of a rust removal device.

[0080] During the zero-pressure yaw process, the yaw brake 500 drives the connecting bracket 300, which in turn drives the entire rust removal device to move. This causes the entire rust removal device to make circular motion around the center of the yaw system on the friction disc 400. Due to the elastic component 220 of the rust removal device applying elastic force to the grinding disc 210, the grinding and rust removal effect is achieved through the friction between the grinding disc 210 and the friction disc 400.

[0081] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0082] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A rust removal device for a friction disc in a yaw system, characterized in that, include: Support body (100); Two grinding sections (200) are spaced apart on the support body (100) along the height direction. Grinding discs (210) are respectively provided on opposite sides of the two grinding sections (200). The grinding discs (210) are configured to grind the friction surface of the friction disk (400) of the yaw system. Each of the grinding parts (200) is provided with an elastic component (220) connected to the grinding disc (210), and the elastic component (220) has an elastic force that drives the grinding disc (210) to press against the friction disc (400); The elastic component (220) includes a plurality of butterfly spring groups (221) connected in series, with at least two adjacent butterfly spring groups (221) having opposite mounting directions.

2. The rust removal device for the friction disc of the yaw system according to claim 1, characterized in that, The butterfly spring assembly (221) includes at least two butterfly springs with the same installation direction. Among the plurality of butterfly spring assemblies (221), any two adjacent butterfly spring assemblies (221) have opposite installation directions.

3. The rust removal device for the friction disc of the yaw system according to claim 1, characterized in that, The polishing part (200) includes: The mounting housing (230) has an internal cavity in which the elastic component (220) is located; The mounting housing (230) has a first cover (240) and a second cover (250) on opposite sides to close the cavity, and the first cover (240) is connected to the grinding disc (210); The first cover (240) is embedded in the mounting housing (230) and can slide along the axial direction of the mounting housing (230). The second cover (250) is threadedly connected to the mounting housing (230).

4. The rust removal device for the friction disc of the yaw system according to claim 3, characterized in that, The mounting housing (230) is provided with a connecting post (260), one end of which is connected to the first cover (240). The connecting post (260) is used to connect multiple butterfly spring groups (221) in series.

5. The rust removal device for the friction disc of the yaw system according to any one of claims 1 to 4, characterized in that, Also includes: A connecting bracket (300) is connected to the side of the support body (100) away from the friction disc (400). The connecting bracket (300) has two sets of connectors (310) arranged opposite to each other. The connectors (310) are used to connect to the yaw brake (500).

6. The rust removal device for the friction disc of the yaw system according to claim 5, characterized in that, The two sets of connectors (310) are arranged symmetrically, and each set of connectors (310) has two connecting ends (311) spaced apart, and both connecting ends (311) are connected to the yaw brake (500).

7. The rust removal device for the friction disc of the yaw system according to claim 5, characterized in that, The connecting bracket (300) also includes a connecting block (320) connected to the two sets of connecting members (310), and the connecting block (320) and the support body (100) are connected by fasteners that pass through both of them.

8. The rust removal device for the friction disc of the yaw system according to claim 7, characterized in that, The connecting block (320) has a roller (321) on the side facing the friction disc (400).

9. A yaw system, characterized in that, It includes a yaw brake (500), a friction disc (400), and a rust removal device for the yaw system friction disc as described in any one of claims 1 to 8; the yaw brake (500) is disposed on the annular edge side of the friction disc (400).

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