Combination body, dismounting method thereof, switching structure, fixing tool and wind generating set

Abstract

The invention relates to an assembly and a dismounting method thereof, a switching structure, a fixing tool and a wind generating set, the assembly comprises a gear box, the gear box comprises a box main body and a connecting piece, the box main body comprises a center shaft arranged at the end part close to one side of the connecting piece, and the center shaft is arranged at the end part close to one side of the connecting piece; the end part of one side, close to the box main body, of the connecting piece is detachably connected with the central shaft; the generator comprises a stator and a rotor which are coaxially arranged, the rotor comprises a rotor main body and an adapter plate which are detachably connected with each other, and the end part of one side, close to the rotor, of the connecting piece is detachably connected with the adapter plate. The assembly provided by the embodiment of the invention is convenient to disassemble, assemble and maintain, and the maintenance time and the maintenance cost can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to an assembly and a disassembly method thereof, a switching structure, a fixing tool and a wind power generator set. Background Art

[0002] With the development of wind turbine generator sets, the capacity of existing single-unit wind turbine generator sets has been increasing, and the overall unit has also developed towards large-scale. Based on this, the medium-speed transmission chain technology route has been widely used due to its comprehensive advantages of low cost and high reliability. In this technology route, in order to save space and optimize the transmission chain, the gearbox and the generator are usually integrated. However, after the gearbox and the generator are integrated, the existing combination usually cannot be disassembled and assembled in the cabin, and it is not convenient to replace internal parts. When maintenance is required, it can only be hoisted to the ground as a whole for operation, and its maintenance cost is high and the maintenance efficiency is low.

[0003] Therefore, there is an urgent need for a combination with a reliable structure and easy disassembly and assembly, as well as a corresponding disassembly method, a switching structure, a fixing tool, and a wind turbine generator set. Summary of the invention

[0004] The embodiments of the present application provide a combination and a disassembly method thereof, a switching structure, a fixing tool and a wind turbine generator set. The combination has a compact structure and is easy to maintain.

[0005] In the first aspect, according to an embodiment of the present application, a combination is proposed, including: a gearbox, including a box body and a connecting piece, the box body including a central axis arranged at an end portion close to one side of the connecting piece, and the end portion of the connecting piece close to the box body is detachably connected to the central axis; a generator, including a stator and a rotor arranged coaxially, the rotor including a rotor body and an adapter plate which are detachably connected to each other, and the end portion of the connecting piece close to the rotor is detachably connected to the adapter plate.

[0006] According to one aspect of the embodiment of the present application, the adapter plate is coaxially arranged with the rotor body, and the minimum inner diameter of the rotor body is greater than the maximum outer diameter of the connecting piece.

[0007] According to one aspect of the embodiment of the present application, the rotor body is annular and encloses a central hole, and the adapter plate is arranged on a side of the rotor body away from the gear box and at least partially covers the central hole.

[0008] According to one aspect of an embodiment of the present application, the box body also includes an end cover, the central axis at least partially protrudes from the end cover and can rotate along the circumferential direction of the end cover, and the connecting member includes a fixing portion and an output shaft that are rotatably connected to each other; the fixing portion is detachably connected to the end cover, and the two side ends of the output shaft in the axial direction of the assembly are respectively detachably connected to the central axis and the adapter plate.

[0009] According to one aspect of the embodiment of the present application, a connecting groove recessed along the axial direction is provided at one end of the output shaft close to the box body, and the central shaft is at least partially inserted into the connecting groove and connected to the output shaft key.

[0010] According to one aspect of the embodiment of the present application, the fixing portion includes an accommodating cavity which is arranged through the axial direction, and a plurality of bearings which are arranged at intervals along the axial direction are arranged in the accommodating cavity. The output shaft is inserted into the bearings and rotatably cooperates with the fixing portion.

[0011] According to one aspect of the embodiment of the present application, a surface of the stator on one side facing away from the gear box and a surface of the rotor on one side facing away from the gear box are both provided with fixing holes, and the fixing holes are arranged at equal intervals in the circumferential direction of the assembly.

[0012] In the second aspect, a method for disassembling an assembly is proposed according to an embodiment of the present application, comprising: providing an assembly in any embodiment of the first aspect; fixing the rotor and the stator relative to each other; separating the adapter plate from the rotor body and the output shaft to disassemble the adapter plate; separating the fixing part from the box body to disassemble the connecting part.

[0013] According to one aspect of an embodiment of the present application, the step of fixing the rotor and the stator relative to each other includes: providing a fixing tool, the fixing tool including a plurality of rotor connection holes and a plurality of stator connection holes, the rotor connection holes and the stator connection holes being respectively arranged at intervals along the circumference of the fixing tool; providing a fixing piece, inserting the fixing piece into the rotor connection hole and the stator connection hole, so as to detachably connect the fixing tool to the stator and the rotor at the same time.

[0014] On the third aspect, according to an embodiment of the present application, a transfer structure is proposed for connecting a gearbox and a generator, including: a fixed part, which is detachably connected to the gearbox at one end portion on its own axial direction, the fixed part is provided with an accommodating cavity which is arranged through the axial direction, and a plurality of bearings which are arranged at intervals along the axial direction are provided in the accommodating cavity; an output shaft, which is inserted into the accommodating cavity and rotatably connected to the fixed part; an adapter plate, which is detachably connected to one end portion of the output shaft which is away from the fixed part, and the adapter plate is also detachably connected to the generator.

[0015] In a fourth aspect, according to an embodiment of the present application, a fixing tool is proposed, which is applied to a generator, wherein the generator includes a stator and a rotor, and includes: a support frame, wherein along the axial direction of the generator, the orthographic projection of the support frame at least partially overlaps with the orthographic projection of the stator and the orthographic projection of the rotor; a connecting portion, which is connected to the support frame, and a plurality of connecting portions are detachably connected to the stator and the rotor, respectively.

[0016] According to one aspect of the embodiment of the present application, the support frame is a cylindrical structure, and the connecting parts are arranged at equal intervals along the circumference of the support frame.

[0017] In a fifth aspect, according to an embodiment of the present application, a wind turbine generator set is proposed, comprising the combination in any embodiment of the first aspect.

[0018] The combination provided in the embodiment of the present application includes a gearbox and a generator, wherein the gearbox includes a box body and a connecting piece, and the rotor of the generator includes a rotor body and an adapter plate. By transmitting the output of the gearbox along the central axis of the gearbox, the connecting piece, the adapter plate, and the rotor in sequence, and at the same time making the connecting piece and the box body detachably connected, and the adapter plate and the rotor detachably connected, the connecting piece can be removed conveniently and quickly to facilitate targeted repair or replacement of the gearbox or generator, which can effectively reduce maintenance costs and improve maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0020] Figure 1 It is a structural schematic diagram of a combination provided by an embodiment of the present application;

[0021] Figure 2 is a partial cross-sectional view of a combination provided by an embodiment of the present application;

[0022] Figure 3 is a schematic structural diagram of a gearbox provided by an embodiment of the present application;

[0023] Figure 4 is a schematic diagram of the structure of a generator provided by an embodiment of the present application;

[0024] Figure 5 is a schematic structural diagram of a connector provided by an embodiment of the present application;

[0025] Figure 6 is a flow chart of a disassembly method provided by an embodiment of the present application;

[0026] Figure 7 yes Figure 6 A schematic structural diagram of step S4 in the disassembly method shown;

[0027] Figure 8 is a flow chart of a disassembly method provided by another embodiment of the present application;

[0028] Fig. 9 It is a schematic diagram of the structure of a wind turbine generator set provided in one embodiment of the present application.

[0029] in:

[0030] 100- assembly; 200- wind turbine generator set;

[0031] 10-gearbox; 20-generator; 30-fixed tooling;

[0032] 11-box body; 12-connecting piece; 21-stator; 22-rotor; 23-fixing hole; 31-support frame; 32-connecting part;

[0033] 111-central axis; 112-end cover; 121-fixed part; 122-output shaft; 221-rotor body; 222-adapter plate;

[0034] 1221-connecting groove; 1211-accommodating cavity; 1212-bearing;

[0035] X-axis direction. DETAILED DESCRIPTION

[0036] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0037] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structures in the molding mold and molding method of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the meaning of "multiple" is more than two, and the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] With the development of technology in the field of wind power generation, the capacity of existing wind turbines has been increasing, and the overall unit has also been developing towards large-scale. Based on this, the medium-speed transmission chain technology route has been widely used due to its comprehensive advantages of low cost and high reliability. In this technology route, in order to save space and optimize the transmission chain, the gearbox and the generator are usually integrated in an integrated structure.

[0040] On this basis, the applicant found that after the gearbox and generator in the wind turbine are integrated, the combined structure is not easy to disassemble and usually cannot be disassembled in the cabin. Every time maintenance or replacement of internal parts is required, the integrated structure can only be hoisted to the ground for operation, which has high maintenance costs and low maintenance efficiency. The output speed of the gearbox is high, resulting in a high probability of failure. With the extension of running time, the sealing ring is prone to wear and oil leakage, the bearing temperature is too high and burns out, and the gear tooth surface is worn, which must be repaired or replaced in time.

[0041] In order to solve the above problems, the embodiments of the present application propose an assembly and its disassembly method, a switching structure, a fixing tool and a wind turbine generator set, wherein the assembly can facilitate disassembly between the gearbox and the generator by adding connecting parts and an adapter plate.

[0042] It is understandable that the following embodiments of the present application only illustrate the application of the combination to a wind turbine generator set as an example, but the combination and the adapter structure provided in the embodiments of the present application are not limited to the following embodiments, and can also be used in other structures that require a detachable connection and protect them.

[0043] In order to better understand this application, Figures 1 to 9 The assembly and disassembly method thereof, the transfer structure, the fixing tooling and the wind turbine generator set provided in the present application are described in detail.

[0044] Please also read Figures 1 to 4 , Figure 1 is a schematic diagram of the structure of a combination provided by an embodiment of the present application, Figure 2 is a partial cross-sectional view of a combination provided by an embodiment of the present application, Figure 3 is a schematic diagram of the structure of a gearbox provided by an embodiment of the present application, Figure 4 It is a schematic diagram of the structure of a generator provided in one embodiment of the present application.

[0045] In the first aspect, according to an embodiment of the present application, a combination 100 is proposed, including a gearbox 10 and a generator 20, the gearbox 10 includes a box body 11 and a connecting piece 12, the box body 11 includes a central axis 111 arranged at an end portion near one side of the connecting piece 12, and the end portion of the connecting piece 12 near the box body 11 is detachably connected to the central axis 111; the generator 20 includes a coaxially arranged stator 21 and a rotor 22, the rotor 22 includes a rotor body 221 and a transfer plate 222 that are detachably connected to each other, and the end portion of the connecting piece 12 near the rotor 22 is detachably connected to the transfer plate 222.

[0046] The embodiment of the present application provides a combination 100, which is mainly composed of a gearbox 10 and a generator 20 integrated, wherein the gearbox 10 includes a conventional box body 11 for increasing speed and a connector 12 for forming a convenient detachable connection. Specifically, a plurality of groups of mutually meshing gear structures are provided in the box body 11 of the gearbox 10. By adjusting the gear ratio of the gear structure, the rotation speed of the output end of the gearbox 10 can be increased. The output end of the box body 11 is a central shaft 111 extending from one end on its own axial direction X. The central shaft 111 is detachably connected to the connector 12 to transmit the torque transmitted by the box body 11.

[0047] Furthermore, the generator 20 includes a stator 21 and a rotor 22 that are coaxially arranged and rotated with each other, wherein the rotor 22 includes a rotor body 221 for arranging structures such as a yoke, and also includes an adapter disk 222 for connection, and the rotor body 221 and the adapter disk 222 can be detachably connected. At the same time, the end of the connecting member 12 close to the rotor 22 is detachably connected to the adapter disk 222, thereby the torque output by the central shaft 111 can be transmitted to the rotor body 221 via the connecting member 12 and the adapter disk 222 to drive the rotor 22 to rotate.

[0048] In the assembly 100, the central shaft 111 for output of the gearbox 10 and the connecting member 12 are detachably connected. At the same time, the connecting member 12 and the adapter plate 222, as well as the adapter plate 222 and the rotor body 221 are detachably connected. At this time, by removing the adapter plate 222, the connecting member 12 can be easily repaired or replaced, thereby reducing the time and cost required for maintenance.

[0049] It can be understood that the adapter plate 222 is detachably connected to the rotor body 221 and the connecting member 12. Based on this, in order to be able to cooperate with the aforementioned two rotating parts, the adapter plate 222 can be an annular or circular plate-shaped member, and is connected to the connecting member 12 and the rotor body 221 respectively through a plurality of connecting holes spaced apart along its own circumference and fasteners inserted in the air.

[0050] In some optional embodiments, the adapter plate 222 is coaxially arranged with the rotor body 221 , and the minimum inner diameter of the rotor body 221 is greater than the maximum outer diameter of the connecting member 12 .

[0051] The adapter plate 222 in the embodiment of the present application is connected between the connector 12 and the rotor body 221, and can be coaxially arranged with both. On this basis, when the connector 12 needs to be disassembled or replaced, the adapter plate 222 can be removed first, and the connector 12 and other components located between the box body 11 and the generator 20 can be operated through the opening originally covered by the adapter plate 222. Therefore, in order to be able to take out the connector 12 without disassembling the rotor body 221, the minimum inner diameter of the rotor body 221 can be greater than the maximum outer diameter of the connector 12, so as to ensure that the connector 12 can be taken out and replaced or the assembly 100 can be disassembled in the next step, thereby further ensuring the convenience of maintenance.

[0052] Furthermore, after the adapter plate 222 is disassembled, the gearbox 10 and the generator 20 can be conveniently disassembled by separating the stator 21 and the box body 11 from each other, thereby enabling targeted maintenance of the components that require maintenance, saving maintenance time and maintenance costs.

[0053] In some optional embodiments, the rotor body 221 is annular and encloses a central hole, and the adapter plate 222 is arranged on a side of the rotor body 221 away from the gear box 10 and at least partially covers the central hole.

[0054] The rotor 22 in the embodiment of the present application includes a rotor body 221 and an adapter plate 222. Specifically, the rotor body 221 may be annular, the outer side of the annular structure is used to set components such as a yoke, and the inner side is connected to the adapter plate 222. The annular rotor body 221 encloses a central hole. As mentioned above, the connector 12 can be disassembled or maintained through the central hole, and the diameter of the central hole can be greater than the maximum outer diameter of the connector 12.

[0055] Furthermore, during the disassembly of the assembly 100, the adapter plate 222 should be able to be disassembled and removed first. To facilitate operation, the adapter plate 222 can be arranged on the side of the rotor body 221 away from the gear box 10, so that it can be easily removed. At the same time, the adapter plate 222 can at least partially cover the aforementioned center hole, so that it can be adapted to the diameter of the output shaft 122, and form the required detachable connection between the two.

[0056] See also Figure 5 , Figure 51 is a schematic diagram of the structure of a connector provided by an embodiment of the present application. In some optional embodiments, the box body 11 further includes an end cover 112, the central shaft 111 at least partially protrudes from the end cover 112 and can rotate along the circumference of the end cover 112, and the connector 12 includes a fixed portion 121 and an output shaft 122 that are rotatably connected to each other; the fixed portion 121 is detachably connected to the end cover 112, and the two side ends of the output shaft 122 in the axial direction X of the assembly 100 are detachably connected to the central shaft 111 and the adapter plate 222 respectively.

[0057] The gearbox 10 in the embodiment of the present application includes a box body 11 and a connecting member 12, wherein an end cover 112 may be provided at one end of the box body 11 close to the generator 20, and the end cover 112 may be an annular plate-shaped member and have an opening at the center position, and the central axis 111 extends out through the opening and at least partially protrudes from the end cover 112 to facilitate a detachable connection with the connecting member 12.

[0058] Furthermore, the connector 12 may include a fixing portion 121 for supporting and fixing and an output shaft 122 for outputting torque, and the two are rotatably connected. On this basis, the fixing portion 121 can be detachably connected to the end cover 112, specifically, it can be connected through connection holes and fasteners arranged at intervals in the circumferential direction, and these connection holes can be arranged around the central axis 111. At the same time, the output shaft 122 is connected to the central axis 111 to transmit torque, so the other side can also be detachably connected to the adapter plate 222 through the connection holes and fasteners, thereby forming a torque transmission, driving the rotor 22 of the generator 20 to rotate.

[0059] As mentioned above, after removing the adapter plate 222 in the embodiment of the present application, the gearbox 10 and the generator 20 can be easily separated from each other. Similarly, after separating the connecting member 12 from the box body 11, the connecting member 12 or the central shaft 111 and other components can be maintained in a targeted manner.

[0060] In some optional embodiments, a connection groove 1221 recessed along the axial direction X is provided at one end of the output shaft 122 close to the box body 11 , and the center shaft 111 is at least partially inserted into the connection groove 1221 and key-connected to the output shaft 122 .

[0061] The output shaft 122 in the embodiment of the present application is connected to the central shaft 111 in the box body 11 to transmit torque, and the connection method can be a key connection. Specifically, one end of the output shaft 122 and the central shaft 111 can be provided with a connection groove 1221 recessed along the axial direction X, and the inner wall diameter of the groove should match the diameter of the central shaft 111. The central shaft 111 can be inserted into the connection groove 1221 and connected by a flat key or a spline, so that the connection is stable and reliable.

[0062] It can be understood that in order to facilitate the disassembly of the connecting member 12, it should be ensured that the connecting member 12 can be pulled out along the axial direction X, and the center shaft 111 and the output shaft 122 are both arranged at the high-speed end of the gearbox 10, and the connecting key used should have a certain structural strength, so a spline connection can be used between the center shaft 111 and the output shaft 122.

[0063] In some optional embodiments, the fixed portion 121 includes an accommodating cavity 1211 extending through the axial direction X, and a plurality of bearings 1212 arranged at intervals along the axial direction X are arranged in the accommodating cavity 1211. The output shaft 122 is inserted into the bearing 1212 and rotatably cooperates with the fixed portion 121.

[0064] The connecting member 12 in the embodiment of the present application is composed of a fixing portion 121 and an output shaft 122, wherein the fixing portion 121 is used to connect with the box body 11 to provide support and limit, and the output shaft 122 is rotationally connected to the fixing portion 121. Based on this, the fixing portion 121 and the output shaft 122 are rotationally connected, and the rotational connection can be achieved by a bearing.

[0065] Specifically, the fixing portion 121 may have an accommodating cavity 1211 extending through the axial direction X, and two or more bearings 1212 may be arranged in the accommodating cavity 1211, and two bearings may be provided, and the output shaft 122 may be inserted into the bearings 1212 to form a rotational connection. Optionally, the bearings 1212 may be supported and limited by adjusting the diameter of the inner wall of the accommodating cavity 1211.

[0066] In some optional embodiments, fixing holes 23 are provided on a surface of the stator 21 facing away from the gear box 10 and a surface of the rotor 22 facing away from the gear box 10 . The fixing holes 23 are arranged at equal intervals in the circumferential direction of the assembly 100 .

[0067] The combination 100 provided in the embodiment of the present application includes a generator 20, which is composed of a stator 21 and a rotor 22. It can be understood that when the adapter plate 222 in the generator 20 is disassembled, the position of the rotor 22 should be fixed, that is, the relative position between the stator 21 and the rotor 22 in the circumferential direction should be fixed to facilitate disassembly and assembly.

[0068] On this basis, the stator 21 and the rotor 22 may be provided with fixing holes 23 on the side facing away from the gear box 10, through which the relative position between the rotor 22 and the stator 21 may be fixed to facilitate disassembly and assembly operations while reducing operational risks.

[0069] Please also read Figure 6 and Figure 7 , Figure 6is a flow chart of a disassembly method provided by an embodiment of the present application, Figure 7 yes Figure 6 A structural diagram of step S4 in the disassembly method is shown. In a second aspect, according to an embodiment of the present application, a method for disassembling a combination is proposed, comprising:

[0070] S1. Provide the assembly 100 according to any one of the embodiments of the first aspect;

[0071] S2, fixing the rotor 22 and the stator 21 relatively;

[0072] S3, separating the adapter plate 222 from the rotor body 221 and the output shaft 122 to disassemble the adapter plate 222;

[0073] S4, separating the fixing portion 121 and the box body 11 from each other to disassemble the connecting member 12.

[0074] The embodiment of the first aspect of the present application provides a combination 100 that is easy to assemble and disassemble. Based on this, the embodiment of the present application also provides a method for disassembling the combination 100.

[0075] Specifically, in step S1, a combination 100 in any embodiment of the first aspect is first provided, which includes a gearbox 10 and a generator 20 connected to each other. In step S2, the relative position of the stator 21 and the rotor 22 in the circumferential direction can be fixed to facilitate subsequent disassembly procedures.

[0076] In step S3, the detachable connection between the adapter disk 222 and the rotor body 221 can be first released, and then the detachable connection between the adapter disk 222 and the output shaft 122 in the connecting member 12 can be released. At this time, the adapter disk 222 can be removed to expose the connecting member 12 from the opening originally covered by the adapter disk 222, so as to facilitate the next operation of the connecting member 12. At this time, the gearbox 10 and the generator 20 can be disassembled by disconnecting the detachable connection between the stator 21 and the end cover 112, so that the components that need to be repaired can be lifted, moved or maintained separately.

[0077] In step S4, the connector 12 can be operated through the opening exposed after the adapter plate 222 is removed in step S3, that is, the connection between the fixing portion 121 in the connector 12 and the box body 11 of the gear box 10 is released, and the output shaft 122 and the central shaft 111 can be splined. At this time, the connector 12 can be pulled outward to remove it from the gear box 10, so that the central shaft 111 and other components in the box body 11 are exposed. Subsequently, a single component in the assembly 100 that needs to be repaired can be repaired or replaced. This disassembly method is convenient and quick, and can effectively save the time required for the maintenance of the assembly 100.

[0078] See also Figure 8 , Figure 8 FIG. 2 is a flow chart of a disassembly method provided by another embodiment of the present application. In some optional embodiments, step S2 of fixing the rotor 22 and the stator 21 relative to each other comprises:

[0079] S21, providing a fixing tool 30, wherein the fixing tool 30 comprises a plurality of rotor connection holes and a plurality of stator connection holes, wherein the rotor connection holes and the stator connection holes are arranged at intervals along the circumference of the fixing tool 30;

[0080] S22, providing a fixing piece, and inserting the fixing piece into the rotor connection hole and the stator connection hole, so that the fixing fixture 30 is detachably connected to the stator 21 and the rotor 22 at the same time.

[0081] In step S2 of fixing the rotor 22 and the stator 21 relative to each other, the specific fixing method adopted can be to connect and set an additional fixing tool 30, and the fixing holes 23 set on the stator 21 and the side of the rotor 22 away from the gear box 10 can be detachably connected to the fixing tool 30, and the relative position between the rotor 22 and the stator 21 can be fixed with the help of the structure of the fixing tool 30.

[0082] Specifically, in step S21, a fixing fixture 30 having stator connection holes and rotor connection holes may be first provided, and then the stator fixing holes and rotor fixing holes arranged at intervals along the circumferential direction are aligned with the fixing holes 23 provided on the stator 21 and the rotor 22, respectively. In step S22, the fixing member may be inserted into the aforementioned mutually aligned fixing holes to form a circumferential position locking. The fixing member may be a fixing pin, such as a cylindrical pin, a tapered pin, etc., and the present application does not make any specific limitation on this.

[0083] In the third aspect, according to the embodiment of the present application, a transfer structure is proposed for connecting the gearbox 10 and the generator 20, and the transfer structure includes a fixing part 121, an output shaft 122 and a transfer plate 222, that is, it can include the connector 12 and the transfer plate 222 in any embodiment of the first aspect. The fixing part 121 is detachably connected to the gearbox 10 at one end on its own axial direction X, and the fixing part 121 is provided with a receiving cavity 1211 that is arranged along the axial direction X, and a plurality of bearings 1212 arranged at intervals along the axial direction X are provided in the receiving cavity 1211; the output shaft 122 is inserted into the receiving cavity 1211 and is rotatably connected to the fixing part 121; the transfer plate 222 is detachably connected to the end of the output shaft 122 that is away from the fixing part 121, and the transfer plate 222 is also detachably connected to the generator 20.

[0084] The embodiment of the present application further provides a transfer structure for forming a connection relationship between the gearbox 10 and the generator 20 that is easy to disassemble and assemble. Specifically, the transfer structure includes a fixing portion 121, an output shaft 122, and a transfer plate 222, wherein the fixing portion 121 can be detachably connected to the gearbox 10, the output shaft 122 is rotatably connected to the fixing portion 121 and is used to transmit the torque output by the gearbox 10, and the transfer plate 222 can be detachably connected to the generator 20 while being detachably connected to the output shaft 122, thereby transmitting the torque to the rotor 22 in the generator 20.

[0085] The specific internal structure and connection method of the adapter structure are the same as the connector 12 and the adapter plate 222 in the first aspect, and the adapter structure has all the beneficial effects of the combination 100 provided in the embodiment of the present application. For details, please refer to the specific description of the combination 100 in the above embodiments, and this embodiment will not be repeated here.

[0086] In the fourth aspect, according to an embodiment of the present application, a fixing tool 30 is proposed, which is applied to a generator 20. The generator 20 includes a stator 21 and a rotor 22. The fixing tool 30 includes a support frame 31 and a connecting portion 32. Along the axial direction X of the generator 20, the orthographic projection of the support frame 31 at least partially overlaps with the orthographic projection of the stator 21 and the orthographic projection of the rotor 22; the connecting portion 32 is connected to the support frame 31, and multiple connecting portions 32 are detachably connected to the stator 21 and the rotor 22, respectively.

[0087] The embodiment of the present application also provides a fixing fixture 30 for fixing the relative position between the nail 21 and the rotor 22 in the generator 20. Specifically, it includes a support frame 31 as a supporting body and a connecting portion 32 installed on the support frame 31 for forming a detachable connection. When using the fixing fixture 30, the orthographic projection of the support frame 31 on the axial direction X should be able to overlap with the orthographic projections of the stator 21 and the rotor 22 at the same time. The connecting portion 32 is set in the overlapping portion, and can be connected to the stator 21 and the rotor 22 respectively. By connecting the two stators 21 and the rotor 22 to the fixing fixture 30 at the same time, their relative positions can be fixed, avoiding the problem of rotation of the rotor 22 when the generator 20 or other structures including the generator 20 are maintained.

[0088] In some optional embodiments, the support frame 31 is a cylindrical structure, and the connecting parts 32 are arranged at equal intervals along the circumference of the support frame 31 .

[0089] In order to match the generator 20 to be connected, the support frame 31 can be a cylindrical structure that is convenient for connection and support with the rotating body. Optionally, the support frame 31 can be a circular cylindrical structure. In this case, the connecting parts 32 can be arranged at equal intervals along the circumference on the support frame 31, and the fixing holes 23 as described above are set on the stator 21 and the rotor 22, so that a stable and uniformly stressed connection relationship can be formed by means of hole-pin matching, thereby improving the reliability of the fixing tool 30.

[0090] See also Fig. 9 , Fig. 9 A fifth aspect of the present invention provides a wind turbine generator set 200, comprising the assembly 100 in any one of the embodiments of the first aspect.

[0091] The wind turbine generator set 200 provided in the embodiment of the present application has all the beneficial effects of the assembly 100 provided in the embodiment of the present application. For details, please refer to the specific description of the assembly 100 in the above embodiments, and this embodiment will not be repeated here.

[0092] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A combination, characterized in that: include: The gearbox comprises a box body and a connecting piece, wherein the box body comprises a central shaft arranged at an end portion close to one side of the connecting piece, and an end portion of the connecting piece close to one side of the box body is detachably connected to the central shaft; The generator comprises a coaxially arranged stator and a rotor, wherein the rotor comprises a rotor body and an adapter plate which are detachably connected to each other, and an end portion of the connecting member close to one side of the rotor is detachably connected to the adapter plate.

2. The combination according to claim 1, characterized in that: The adapter plate is coaxially arranged with the rotor body, and the minimum inner diameter of the rotor body is greater than the maximum outer diameter of the connecting member.

3. The combination according to claim 2, characterized in that: The rotor body is annular and encloses a central hole. The adapter plate is arranged on a side of the rotor body away from the gear box and at least partially covers the central hole.

4. The combination according to claim 1, characterized in that: The box body further includes an end cover, the central shaft at least partially protrudes from the end cover and can rotate along the circumference of the end cover, and the connecting member includes a fixing portion and an output shaft that are rotatably connected to each other; The fixing portion is detachably connected to the end cover, and both side ends of the output shaft in the axial direction of the assembly are detachably connected to the central shaft and the adapter plate respectively.

5. The combination according to claim 4, characterized in that: The output shaft is provided with a connecting groove recessed along the axial direction at one end portion close to the box body, and the central shaft is at least partially inserted into the connecting groove and connected with the output shaft key.

6. The combination according to claim 4, characterized in that: The fixing portion comprises an accommodating cavity penetrating along the axial direction, a plurality of bearings arranged at intervals along the axial direction are arranged in the accommodating cavity, and the output shaft is inserted into the bearings and rotatably cooperates with the fixing portion.

7. The combination according to claim 1, characterized in that: A surface of the stator facing away from the gear box and a surface of the rotor facing away from the gear box are both provided with fixing holes, and the fixing holes are arranged at equal intervals in the circumferential direction of the assembly.

8. A method for disassembling a combination, characterized in that: include: Providing a combination as claimed in any one of claims 1 to 7; Fixing the rotor and the stator relatively to each other; Separating the adapter plate from the rotor body and the connecting member to disassemble the adapter plate; The connecting piece and the box body are separated from each other to disassemble the connecting piece.

9. The disassembly method according to claim 8, characterized in that: The step of fixing the rotor and the stator relative to each other comprises: Providing a fixing tool, the fixing tool comprising a plurality of rotor connection holes and a plurality of stator connection holes, the rotor connection holes and the stator connection holes being arranged at intervals along the circumference of the fixing tool; A fixing piece is provided, and the fixing piece is inserted into the rotor connection hole and the stator connection hole, so that the fixing tool is detachably connected to the stator and the rotor at the same time.

10. A transfer structure for connecting a gearbox and a generator, characterized in that: include: A fixing part, which is detachably connected to the gear box at one end portion in the axial direction thereof, wherein the fixing part is provided with an accommodating cavity penetrating along the axial direction, and a plurality of bearings arranged at intervals along the axial direction are provided in the accommodating cavity; An output shaft, inserted into the accommodating cavity and rotatably connected to the fixing portion; The adapter plate is detachably connected to the end portion of the output shaft which is away from the fixing portion, and the adapter plate is also detachably connected to the generator.

11. A fixing device, applied to a generator, the generator comprising a stator and a rotor, characterized in that: include: A support frame, wherein along the axial direction of the generator, an orthographic projection of the support frame at least partially overlaps with an orthographic projection of the stator and an orthographic projection of the rotor; The connecting part is connected to the support frame, and a plurality of the connecting parts are detachably connected to the stator and the rotor respectively.

12. The fixing tool according to claim 11, characterized in that: The support frame is in a cylindrical structure, and the connecting parts are arranged at equal intervals along the circumference of the support frame.

13. A wind turbine generator set, characterized in that: The invention comprises the combination as claimed in any one of claims 1 to 7.

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