Rotating shaft and wind generating set

Abstract

The utility model provides a rotating shaft and a wind generating set. The utility model is applicable to the technical field of spindles. The rotating shaft comprises a plurality of rotating shaft single bodies which are sequentially connected in the extending direction of the rotating shaft single bodies. Each rotating shaft single body comprises a main body, and a first connecting part and a second connecting part which are arranged on the main body, and at least one of the first connecting part and the second connecting part can be used for connecting a coupler; and in two adjacent rotating shaft single bodies, the first connecting part of one rotating shaft single body can be connected with the second connecting part of the other rotating shaft single body. According to the application, the convenience of the rotating shaft during transportation and installation is improved.

Description

Technical Field

[0001] This application relates to the field of shaft technology, and more particularly to shafts and wind turbine generator sets. Background Technology

[0002] The shaft is a crucial component of a wind turbine generator, and its performance significantly impacts the generator's power generation efficiency. In wind turbines, the shaft is typically designed as a single, solid structure to enhance its strength. However, this makes transportation and installation inconvenient, and limits its applicability to a wider range of scenarios. Utility Model Content

[0003] This application provides a rotating shaft and a wind turbine generator set to solve the problem.

[0004] In a first aspect, embodiments of this application provide a rotating shaft, including multiple rotating shaft units, which are connected sequentially along the extending direction of the rotating shaft units;

[0005] The rotating shaft unit includes a main body, and a first connecting part and a second connecting part disposed on the main body, at least one of the first connecting part and the second connecting part being capable of connecting a coupling;

[0006] In two adjacent rotating shaft units, the first connecting part of one rotating shaft unit can be connected to the second connecting part of the other rotating shaft unit.

[0007] By adopting the above technical solution, this application provides a segmented shaft design, including multiple shaft units connected sequentially along their extension direction. Each shaft unit includes a main body, a first connecting portion, and a second connecting portion, at least one of which can be used to connect a coupling. In two adjacent shaft units, the first connecting portion of one shaft unit can be connected to the second connecting portion of the other shaft unit. This design significantly reduces the difficulty of manufacturing, transporting, and installing the shaft, while improving its versatility and flexibility.

[0008] When assembling or disassembling the shafts, simply connect or separate the corresponding shaft units. This structure offers great flexibility, facilitating transportation and installation, and allowing the shaft length to be adjusted according to actual needs, thus improving its adaptability. Furthermore, each shaft unit is equipped with a first connecting part and a second connecting part, allowing the second connecting part of one shaft unit to connect with the first connecting part of another adjacent shaft unit. This facilitates easy alignment and fixation between the shaft units, ensuring the structural stability and reliability of the assembled shafts.

[0009] It is easy to understand that, compared with the one-piece solid structure of the shaft in related technologies, the shaft design of multiple shaft units forming a whole proposed in this application not only solves the inconvenience and limitations of traditional shafts in transportation and installation, but also enhances the applicability and flexibility of the shaft, providing strong support for the stable operation of wind turbine generators.

[0010] In some possible implementations, the first connecting portion is provided with a keyway, which can be used to connect to a coupling via a connecting key;

[0011] The second connecting part is provided with a connecting protrusion;

[0012] In two adjacent pivot units, the connecting protrusion of one pivot unit can be mated with the keyway of the other pivot unit.

[0013] In some possible implementations, the second connecting portion is provided with a receiving groove, and the receiving groove is provided with an opening;

[0014] In two adjacent rotating shaft units, the first connecting part of one rotating shaft unit can be inserted into the receiving groove of the other rotating shaft unit through an opening.

[0015] In some possible implementations, the opening is oriented parallel to the radial direction of the rotating shaft unit;

[0016] The connecting protrusion is located on the bottom surface of the receiving groove, and the connecting protrusion protrudes radially toward the axis of the rotating shaft unit.

[0017] In some possible implementations, the opening is oriented parallel to the axial direction of the rotating shaft unit;

[0018] The connecting protrusion is provided on the bottom surface of the receiving groove, and the connecting protrusion protrudes away from the first connecting part along the axial direction of the rotating shaft unit.

[0019] In some possible implementations, the keyway extends axially along the shaft unit, and the connecting protrusion extends axially along the shaft unit.

[0020] Within the same shaft unit, the keyway and connecting protrusion are symmetrically arranged with respect to the axis of the shaft unit.

[0021] In some possible implementations, the second connecting portion is provided with at least one fastener;

[0022] In two adjacent rotating shaft units, when the first connecting part of one rotating shaft unit passes through the receiving groove of the other rotating shaft unit, the first connecting part and the second connecting part can be fixed relative to each other by a fastener.

[0023] In some possible implementations, the main body is provided with a first fixing member and a second fixing member, the first fixing member being close to the first connecting portion and the second fixing member being close to the second connecting portion;

[0024] In two adjacent rotating shaft units, the first fixing member of one rotating shaft unit is connected to the second fixing member of the other rotating shaft unit.

[0025] In some possible implementations, the first fixing member is provided with a plurality of locking members, which are arranged around the axis of the rotating shaft unit;

[0026] In two adjacent pivot units, the first fixing member of one pivot unit can be connected to the second fixing member of the other pivot unit through a locking member.

[0027] Secondly, embodiments of this application provide a wind turbine generator set, including a shaft as described in any of the first aspects. Attached Figure Description

[0028] 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.

[0029] Figure 1 A schematic diagram of a wind turbine generator set provided in an embodiment of this application;

[0030] Figure 2 A schematic diagram of the nacelle of a wind turbine generator provided in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the structure of the shaft unit provided in the embodiments of this application;

[0032] Figure 4 A schematic diagram of the structure of the rotating shaft unit assembly provided in the embodiments of this application. Figure 1 ;

[0033] Figure 5 A schematic diagram of the structure of the rotating shaft unit assembly provided in the embodiments of this application. Figure 2 ;

[0034] Figure 6 A schematic diagram of multiple connecting protrusions provided in an embodiment of this application;

[0035] Figure 7 A schematic diagram of the fastener provided in an embodiment of this application.

[0036] Figure label:

[0037] 100. Wind turbine generator set; 110. Nacelle; 111. Shaft; 112. Gearbox; 113. Generator; 120. Wind rotor;

[0038] 200, pivot unit; 210, main body; 220, first connecting part; 221, keyway; 230, second connecting part; 231, connecting protrusion; 232, receiving groove; 233, fixing part; 240, first fixing part; 250, second fixing part; 260, locking part.

[0039] 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. Detailed Implementation

[0040] As mentioned in the background, the shaft is one of the core components of a wind turbine generator, and its performance directly affects the power generation efficiency and operational stability of the wind turbine generator. Traditional wind turbine generator shafts typically employ a one-piece solid structure design. While this design improves the shaft's strength, it also introduces numerous problems.

[0041] First, the weight and size of a one-piece solid shaft make transportation and installation extremely inconvenient, especially in large wind turbine generator sets, where the transportation and installation of the shaft requires large lifting equipment, increasing construction difficulty and cost. Second, the application scenarios of a one-piece shaft are relatively limited, making it difficult to adapt to the needs of different models or specifications of wind turbine generator sets, thus restricting its versatility and flexibility.

[0042] To address the aforementioned issues, this application provides a shaft and wind turbine generator set, employing a segmented shaft design comprising multiple shaft units connected sequentially along their extension direction. Each shaft unit includes a main body, a first connecting portion, and a second connecting portion, at least one of which can be used to connect a coupling. In two adjacent shaft units, the first connecting portion of one shaft unit can connect to the second connecting portion of the other shaft unit. This design significantly reduces the difficulty of manufacturing, transporting, and installing the shaft, while simultaneously improving its versatility and flexibility.

[0043] When assembling or disassembling the shafts, simply connect or separate the corresponding shaft units. This structure offers great flexibility, facilitating transportation and installation, and allowing the shaft length to be adjusted according to actual needs, thus improving its adaptability. Furthermore, each shaft unit is equipped with a first connecting part and a second connecting part, allowing the second connecting part of one shaft unit to connect with the first connecting part of another adjacent shaft unit. This facilitates easy alignment and fixation between the shaft units, ensuring the structural stability and reliability of the assembled shafts.

[0044] It is easy to understand that, compared with the one-piece solid structure of the shaft in related technologies, the shaft design of multiple shaft units forming a whole proposed in this application not only solves the inconvenience and limitations of traditional shafts in transportation and installation, but also enhances the applicability and flexibility of the shaft, providing strong support for the stable operation of wind turbine generators.

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0046] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0047] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0048] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0049] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0050] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0051] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0052] See Figures 1 to 6 This application provides a rotating shaft 111, wherein the rotating shaft 111 may include a plurality of rotating shaft units 200, the plurality of rotating shaft units 200 may be connected sequentially along the extension direction of the rotating shaft units 200, and the plurality of sequentially connected rotating shaft units 200 may constitute the rotating shaft 111.

[0053] This segmented design solves the inconveniences of manufacturing, transportation, and installation associated with traditional one-piece hinges 111. For example, as... Figure 1 and Figure 2 As shown, in the nacelle 110 of the wind turbine generator set 100, the length of the shaft 111 can reach tens of meters. If an integral design is adopted, not only is the manufacturing difficult, but transportation and installation also require large lifting equipment. However, by dividing the shaft 111 into multiple shaft units 200, each with a length of 2-3 meters, the manufacturing and transportation difficulties can be significantly reduced, while also facilitating on-site installation.

[0054] It also provides greater flexibility in maintenance. For example, if a single shaft unit 200 is damaged, only the damaged part needs to be replaced, instead of replacing the entire shaft 111, which greatly reduces maintenance costs and time. In addition, by adjusting the number or length of the shaft units 200, the overall length of the shaft 111 can be flexibly adjusted according to different application scenarios, thereby meeting diverse industrial needs.

[0055] like Figure 3 As shown, the rotating shaft unit 200 may include a main body 210, and a first connecting portion 220 and a second connecting portion 230 disposed on the main body 210, at least one of the first connecting portion 220 and the second connecting portion 230 being able to be used to connect a coupling.

[0056] The main body 210 is the main load-bearing part of the shaft unit 200, used to support and transmit torque. It is usually made of high-strength alloy steel and the surface is heat-treated and surface hardened to improve wear resistance and fatigue resistance.

[0057] The first connecting part 220 and the second connecting part 230 are used to realize the connection between the shaft units 200 or the connection with external equipment (such as a coupling). By providing a structure that matches the coupling in the first connecting part 220 or the second connecting part 230, the shaft 111 can be easily connected to external equipment to realize the transmission of power.

[0058] For example, in a wind turbine generator set 100, one end of the shaft 111 needs to be connected to the wind turbine 120, and the other end needs to be connected to the gearbox 112, generator 113, etc. By setting a structure that matches the coupling in the first connecting part 220 or the second connecting part 230, the shaft 111 can be easily connected to the wind turbine 120 or the generator 113 to realize the transmission of power.

[0059] In two adjacent rotating shaft units 200, the first connecting portion 220 of one rotating shaft unit 200 can be connected to the second connecting portion 230 of the other rotating shaft unit 200.

[0060] Specifically, the first connecting portion 220 of the second rotating shaft unit 200 can cooperate with the second connecting portion 230 of the adjacent first rotating shaft unit 200 to form a stable connection. This design makes the connection of the rotating shaft units 200 more flexible and facilitates assembly and disassembly.

[0061] The first connecting part 220 may be provided with a keyway 221. The keyway 221 can be used to connect with a coupling via a connecting key, realizing a stable connection between two rotating shaft units 200 or other equipment or components that require a fixed connection. This design makes the connection of the rotating shaft units 200 more flexible and facilitates assembly and disassembly. The insertion and engagement of the keyway 221 and the connecting protrusion 231 ensures the connection strength between the two rotating shaft units 200.

[0062] The second connecting portion 230 may be provided with a connecting protrusion 231. In two adjacent rotating shaft units 200, the connecting protrusion 231 on the second connecting portion 230 of the first rotating shaft unit 200 can be inserted and engaged with the keyway 221 on the first connecting portion 220 of the second rotating shaft unit 200.

[0063] The second connecting portion 230 may be provided with a receiving groove 232. The shape and size of the receiving groove 232 are suitable for receiving the first connecting portion 220 of another rotating shaft unit 200, so that the rotating shaft units 200 can be nested with each other.

[0064] The receiving groove 232 may be provided with an opening. The opening may be on the side or top of the receiving groove 232, so that its end face can be directly facing each other in an open state, so that the first connecting part 220 of the first rotating shaft unit 200 can pass through the opening into the receiving groove 232 of the second rotating shaft unit 200.

[0065] For example, such as Figure 4 As shown, the orientation of the opening can be parallel to the radial direction of the rotating shaft unit 200. Radial direction can refer to the direction perpendicular to the axis, that is, the opening direction is consistent with the radial direction of the rotating shaft 111, which allows the first connecting part 220 to enter the receiving groove 232 from the side of the rotating shaft 111, facilitating operation during installation.

[0066] The connecting protrusion 231 can be disposed on the bottom surface of the receiving groove 232. The bottom surface of the receiving groove 232 can refer to the surface opposite to the opening. The connecting protrusion 231 can be disposed to protrude radially toward the axis of the rotating shaft 111 along the rotating shaft unit 200, so that the connecting protrusion 231 can be inserted and engaged with the keyway 221 of the adjacent rotating shaft unit 200, thereby preventing relative rotation between the two rotating shaft units 200 and forming a stable connection.

[0067] When the first rotating shaft unit 200 is connected to the second rotating shaft unit 200, the first connecting part 220 of the second rotating shaft unit 200 first enters the receiving groove 232 from top to bottom through the opening of the second connecting part 230 of the first rotating shaft unit 200. Then, the keyway 221 on the first connecting part 220 of the second rotating shaft unit 200 is inserted and engaged with the connecting protrusion 231 at the bottom of the receiving groove 232, making the connection tighter and more stable.

[0068] Or, such as Figure 5 As shown, the orientation of the opening can be parallel to the axial direction of the rotating shaft unit 200. The axial direction can refer to the direction parallel to the axis, that is, the opening direction is consistent with the length direction of the rotating shaft 111, which allows the first connecting part 220 to be inserted into the receiving groove 232 from the end of the rotating shaft 111, facilitating operation during installation.

[0069] The connecting protrusion 231 can be disposed on the bottom surface of the receiving groove 232. The bottom surface of the receiving groove 232 can refer to the surface opposite to the opening. The connecting protrusion 231 can be disposed protruding away from the first connecting portion 220 along the axial direction of the rotating shaft unit 200, so that the connecting protrusion 231 can be inserted and engaged with the keyway 221 of the adjacent rotating shaft unit 200, thereby preventing relative rotation between the two rotating shaft units 200 and forming a stable connection.

[0070] When the first rotating shaft unit 200 is connected to the second rotating shaft unit 200, the first connecting part 220 of the second rotating shaft unit 200 is first inserted into the receiving groove 232 from the end through the opening of the second connecting part 230 of the first rotating shaft unit 200. Then, the keyway 221 on the first connecting part 220 of the second rotating shaft unit 200 is engaged with the connecting protrusion 231 at the bottom of the receiving groove 232, making the connection tighter and more stable.

[0071] like Figure 6As shown, when the orientation of the opening can be parallel to the axial direction of the rotating shaft unit 200, the second connecting portion 230 of the first rotating shaft unit 200 can have multiple connecting protrusions 231, which can be arranged around the axis of the rotating shaft unit 200. Correspondingly, the first connecting portion 220 of the second rotating shaft unit 200 can have multiple keyways 221, which can be arranged around the axis of the rotating shaft unit 200. The number of connecting protrusions 231 matches the number of keyways 221.

[0072] When the first rotating shaft unit 200 is connected to the second rotating shaft unit 200, the first connecting part 220 of the second rotating shaft unit 200 is first inserted into the receiving groove 232 from the end through the opening of the second connecting part 230 of the first rotating shaft unit 200. Then, the multiple keyways 221 on the first connecting part 220 of the second rotating shaft unit 200 are respectively engaged with the multiple connecting protrusions 231 at the bottom of the receiving groove 232, making the connection tighter and more stable.

[0073] During the installation of the wind turbine generator set 100, if the installation space is limited, a radial opening design can be adopted, allowing the operator to insert the first connecting part 220 into the receiving groove 232 from the side of the shaft 111. If rapid assembly is required, an axial opening design can be adopted, allowing the operator to install it from the end of the shaft 111.

[0074] The keyway 221 can extend along the axial direction of the shaft unit 200. The connecting protrusion 231 can extend along the axial direction of the shaft unit 200. The length direction of the keyway 221 and the connecting protrusion 231 is consistent with the length direction of the shaft unit 200, so that the keyway 221 and the connecting protrusion 231 can provide a stable connection interface in the axial direction of the shaft unit 200.

[0075] In the same shaft unit 200, the keyway 221 and the connecting protrusion 231 can be symmetrically arranged with respect to the axis of the shaft unit 200, that is, the keyway 221 and the connecting protrusion 231 are symmetrically distributed in the circumferential direction of the shaft unit 200.

[0076] For example, if the keyway 221 of the pivot unit 200 is opened upward, the connecting protrusion 231 of the pivot unit 200 is opened downward, so that when the two pivot units 200 are connected, the connecting protrusion 231 of the first pivot unit 200 can mate with the keyway 221 of the second pivot unit 200, without having to rotate the keyway 221 or the connecting protrusion 231 to mate with each other.

[0077] like Figure 7As shown, the second connecting portion 230 may be provided with at least one fastener 233. The fastener 233 may be a bolt, pin, or other fastening device. The purpose of providing the fastener 233 is to provide an effective connection method, so that after the first connecting portion 220 of one rotating shaft unit 200 is inserted into the receiving groove 232 of another rotating shaft unit 200, it can be relatively fixed by the fastener 233, thereby ensuring the stability and reliability of the connection between the rotating shaft units 200.

[0078] Specifically, when a single shaft unit 200 needs to be inserted into the receiving groove 232 of an adjacent single shaft unit 200, it can be fixed by a fastener 233 provided on the second connecting part 230. This fixing method ensures that the connection between the first connecting part 220 and the second connecting part 230 will not loosen or fall off after the connection operation, thereby improving the stability of the shaft 111 in use.

[0079] For example, when the first rotating shaft unit 200 needs to be connected to the second rotating shaft unit 200, the first connecting portion 220 of the second rotating shaft unit 200 passes through the receiving groove 232 of the first rotating shaft unit 200. At this time, a bolt can be inserted into the threaded hole provided in the second connecting portion 230 of the first rotating shaft unit 200 and tightened with a nut, thereby achieving relative fixation of the first connecting portion 220 and the second connecting portion 230. This fixing method not only ensures the reliability of the connection but is also easy to operate.

[0080] In this way, the stability and reliability of the shaft 111 can be effectively ensured, especially in working conditions where it needs to withstand large torque or vibration. The use of the fastener 233 can significantly improve the connection strength and durability between the shaft units 200.

[0081] The main body 210 may be provided with a first fixing member 240 and a second fixing member 250. The first fixing member 240 is close to the first connecting portion 220, and the second fixing member 250 is close to the second connecting portion 230. In two adjacent rotating shaft units 200, the first fixing member 240 of one rotating shaft unit 200 can be connected to the second fixing member 250 of the other rotating shaft unit 200.

[0082] The first fastener 240 and the second fastener 250 can be annular structures with relatively large diameters and a certain thickness, such as flanges.

[0083] During installation, the connecting protrusion 231 on the second connecting portion 230 of the first rotating shaft unit 200 is located within the keyway 221 on the first connecting portion 220 of the second rotating shaft unit 200, simultaneously fixing the first fixing member 240 and the second fixing member 250 of the second rotating shaft unit 200, thereby achieving connection and positioning between the rotating shaft units 200. This design ensures the structural stability and reliable connection of the rotating shaft 111.

[0084] The surfaces of the first fixing member 240 and the second fixing member 250 may be provided with multiple rows of evenly distributed locking member 260 insertion holes, which facilitates the connection of the first fixing member 240 of one rotating shaft unit 200 with the second fixing member 250 of another rotating shaft unit 200.

[0085] The first fixing member 240 may be provided with multiple locking members 260. The multiple locking members 260 may be arranged around the axis of the rotating shaft unit 200.

[0086] For example, there are two locking elements 260, evenly distributed around the axis of the rotating shaft unit 200. Each locking element 260 can be in the form of a bolt or screw, used to connect two adjacent rotating shaft units 200 together.

[0087] The locking element 260 can be a cylindrical bolt that can rotate freely in the locking element 260 socket and move up and down along the axial direction. The locking element 260 has a head and a tail at its end. The head matches the socket to ensure that the locking element 260 will not easily come out of the socket, while the tail is designed as a nut that can be tightened.

[0088] In two adjacent rotating shaft units 200, the first fixing member 240 of the second rotating shaft unit 200 can be connected to the second fixing member 250 of the first rotating shaft unit 200 through the locking member 260.

[0089] During installation, the two flanges of the first fixing member 240 and the second fixing member 250 of the second shaft unit 200 are aligned through pre-drilled holes on their flange surfaces. The connecting protrusion 231 of the first shaft unit 200 is inserted into the keyway 221 of the second shaft unit 200. Then, the locking member 260 is inserted sequentially from the locking member 260 hole of the first fixing member 240, passes through the second fixing member 250, and matches the locking member 260 hole. Finally, the locking member 260 is tightened using the nut at the end, so that the two flanges are tightly fixed together. Tightening the nut ensures the connection stability of the shaft 111 and also makes the axial positioning between the shaft units 200 accurate.

[0090] Based on the same concept, this application also provides a wind turbine generator set 100, including any of the aforementioned rotating shafts 111.

[0091] Using any of the aforementioned shafts 111 in the wind turbine generator set 100 can significantly improve the operating efficiency, reliability, and ease of maintenance of the wind turbine generator set 100. Through segmented design, reliable connection structure, and multi-point fixing design, the inconveniences in manufacturing, transportation, and installation of traditional integrated shafts 111 are solved, while the connection strength between shaft units 200 is improved, ensuring the firmness and alignment accuracy of the connection.

[0092] The above technical description is illustrated with reference to the accompanying drawings, which form part of this application, and which show implementations according to the described embodiments. While these embodiments are described in sufficient detail to enable those skilled in the art to implement them, they are not limiting; thus, other embodiments can be used, and variations can be made without departing from the scope of the described embodiments. For example, the order of operations described in the flowcharts is not limiting, and the order of two or more operations illustrated and described in the flowcharts may be changed according to several embodiments. As another example, in several embodiments, one or more operations illustrated and described in the flowcharts are optional or can be deleted. Additionally, certain steps or functions may be added to the disclosed embodiments, or the order of two or more steps may be interchanged. All such variations are considered to be included in the disclosed embodiments and the claims.

[0093] Furthermore, terminology is used in the above technical description to provide a thorough understanding of the described embodiments. However, excessive detail is not required to implement the described embodiments. Therefore, the above description of the embodiments is presented for illustrative and descriptive purposes. The embodiments presented in the above description, as well as the examples disclosed according to these embodiments, are provided separately to add context and aid in understanding the described embodiments. The above specification is not intended to be exhaustive or to limit the described embodiments to the precise form of this application. Based on the above teachings, several modifications, selections, and variations are possible. In some cases, well-known processing steps have not been described in detail to avoid unnecessarily affecting the described embodiments.

[0094] This application uses specific embodiments to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0095] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft, characterized by, The shaft includes a plurality of shaft units, which are connected in sequence along the extension direction of the shaft units; The shaft unit includes a main body, a first connecting portion and a second connecting portion arranged on the main body, and at least one of the first connecting portion and the second connecting portion is used for connecting a shaft coupling; In the two adjacent shaft units, the first connecting portion of one shaft unit is connected with the second connecting portion of the other shaft unit; The first connecting portion is provided with a key groove used for connecting the shaft coupling through a connecting key; the second connecting portion is provided with a connecting protrusion; in the two adjacent shaft units, the connecting protrusion of one shaft unit is inserted into the key groove of the other shaft unit; The second connecting portion is provided with a receiving groove, and the receiving groove is provided with an opening; in the two adjacent shaft units, the first connecting portion of one shaft unit is arranged in the receiving groove of the other shaft unit through the opening; The opening is arranged in parallel with the radial direction of the shaft unit; the connecting protrusion is arranged on the groove bottom surface of the receiving groove, and the connecting protrusion protrudes along the radial direction of the shaft unit towards the axis of the shaft; or The opening is arranged in parallel with the axial direction of the shaft unit; the connecting protrusion is arranged on the groove bottom surface of the receiving groove, and the connecting protrusion protrudes along the axial direction of the shaft unit away from the first connecting portion; the connecting protrusion is a plurality of connecting protrusions, and the plurality of connecting protrusions are arranged around the axis of the shaft unit; the key groove is a plurality of key grooves, and the plurality of key grooves are arranged around the axis of the shaft unit; the number of the connecting protrusions matches the number of the key grooves.

2. A pivot according to claim 1, characterised in that The key groove extends along the axial direction of the shaft unit, and the connecting protrusion extends along the axial direction of the shaft unit; In the same shaft unit, the plurality of key grooves are symmetrically arranged relative to the axis of the shaft unit, and the plurality of connecting protrusions are symmetrically arranged relative to the axis of the shaft unit.

3. The rotating shaft according to claim 1, wherein The second connecting portion is provided with at least one fixing member; When the first connecting portion of one shaft unit is arranged in the receiving groove of the other shaft unit in the two adjacent shaft units, the first connecting portion and the second connecting portion are relatively fixed through the fixing member.

4. A hinge according to any one of claims 1 to 3, characterised in that The main body is provided with a first fixing member close to the first connecting portion and a second fixing member close to the second connecting portion; In the two adjacent shaft units, the first fixing member of one shaft unit is connected with the second fixing member of the other shaft unit.

5. A pivot according to claim 4, wherein The first fixing member is provided with a plurality of locking members arranged around the axis of the shaft unit; In the two adjacent shaft units, the first fixing member of one shaft unit is connected with the second fixing member of the other shaft unit through the locking members.

6. A wind power unit, characterized in that The shaft includes the shaft unit according to any one of claims 1-5.

Images