Gear box, transmission system, wind generating set and disassembling and assembling method

Abstract

The invention relates to a gear box, a transmission system, a wind generating set and a disassembling and assembling method. The gear box comprises a planetary system which comprises a planet carrier, a sun gear and a plurality of planet gears; the gear ring is arranged around the planetary system and is meshed with the planetary gears; the box body is connected to one side of the gear ring in the axial direction and surrounds part of the planetary system, and the orthographic projection of the box body in the axial direction covers at least part of the planetary system; the adapter ring is connected to one side, deviating from the box body in the axial direction, of the gear ring and is arranged around the planetary system; the adapter ring is provided with a first limiting opening, the first limiting opening can be used for installing a first positioning piece from the radial outer side of the adapter ring to limit the relative position of the planet carrier and the adapter ring in the radial direction of the gear ring, the box body is provided with a second limiting opening, and the second limiting opening can be used for installing a second positioning piece to limit the relative position of the planet carrier and the adapter ring in the radial direction of the gear ring. And the relative position of the planet carrier and the box body in at least one direction in the radial direction and the axial direction is limited. The gear box provided by the embodiment of the invention can be independently replaced, and the maintenance cost is low.

Description

Technical Field

[0001] The present application relates to the field of wind power technology, and in particular to a gear box, a transmission system, a wind turbine generator set, and a disassembly and assembly method. Background Art

[0002] Gearboxes are widely used, for example, in wind turbines. Gearboxes are an important mechanical component that is widely used in wind turbines. Their main function is to transfer the power generated by the impeller under the action of wind to the generator and make it get the corresponding speed.

[0003] When the gearbox in the related technology is used in a wind turbine, since the planetary system of the gearbox arranged close to the main shaft system shares the main bearing with the main shaft system, when the gearbox is disassembled separately from the main shaft system as a whole, the planetary carrier of the planetary system has no supporting structure, resulting in the planetary system inside the entire gearbox being unable to be fixed on its own axis. Therefore, it is inconvenient to replace and repair the gearbox separately. If the transmission system is replaced below the tower as a whole, the impeller will be lowered from the tower, resulting in high maintenance costs. Summary of the invention

[0004] The embodiments of the present application provide a gearbox, a transmission system, a wind turbine generator set, and a disassembly and assembly method. The gearbox can be replaced independently with low maintenance costs.

[0005] On the one hand, according to an embodiment of the present application, a gearbox is proposed, comprising: a planetary system, including a planetary carrier, a sun gear and a plurality of planetary gears, wherein the plurality of planetary gears respectively rotate with the planetary carrier, and the sun gear meshes with the planetary gears; a ring gear, which is arranged around the planetary system and meshes with the planetary gears, and along the axial direction of the ring gear, the two ends of the planetary system respectively protrude from the ring gear; a housing, which is connected to one side of the ring gear in the axial direction and is arranged around part of the planetary system, and the positive projection of the housing in the axial direction covers at least part of the planetary system; an adapter ring, which is connected to the side of the ring gear in the axial direction away from the housing and is arranged around the planetary system; wherein a first limit opening is provided on the adapter ring, and the first limit opening can be used to install a first positioning member from the radial outer side of the adapter ring to limit the relative position of the planetary carrier and the adapter ring in the radial direction of the ring gear, and a second limit opening is provided on the housing, and the second limit opening can be used to install a second positioning member to limit the relative position of the planetary carrier and the housing in at least one direction in the radial direction and the axial direction.

[0006] According to one aspect of the embodiment of the present application, the gear box includes a first positioning member installed in the first limit opening, and the first positioning member is detachably connected to the adapter ring and the planet carrier respectively.

[0007] According to one aspect of the embodiments of the present application, a first socket is provided on the planet carrier. Radially, the first limiting port and the first socket are at least partially opposite to each other. The first positioning member can be inserted into the first limiting port and the first socket to fix the relative position of the planet carrier and the adapter ring in the radial direction.

[0008] According to one aspect of the embodiments of the present application, the number of the first limiting ports and the first sockets are respectively multiple and are arranged in a one-to-one manner. The multiple first limiting ports are spaced along the circumferential direction of the gear ring. The first positioning member includes a first fastening bolt. The first fastening bolt is inserted into each set of the relatively arranged first limiting ports and first sockets in the radial direction, and the first fastening bolt is threadedly connected to at least one of the planetary system and the adapter ring.

[0009] According to one aspect of the embodiments of the present application, the first positioning member includes a first limiting block. The first limiting block radially supports between the adapter ring and the planet carrier. The opening size of the first limiting port is larger than the maximum width size of the first limiting block, so that the first limiting block can enter or leave the gap between the adapter ring and the planet carrier from the first limiting port.

[0010] According to one aspect of the embodiments of the present application, the gearbox includes a second positioning member installed in the second limiting port. The second positioning member is detachably connected to the box body and the planet carrier respectively.

[0011] According to one aspect of the embodiments of the present application, a second socket is provided on the planet carrier. The second socket is at least partially opposite to the second limiting port. The second positioning member can be inserted into the second limiting port and the second socket to fix the relative position of the planet carrier and the box body in at least one of the axial direction and the radial direction.

[0012] According to one aspect of the embodiments of the present application, the number of the second sockets and the second limiting ports are both multiple. The second positioning member includes a second fastening bolt. Some of the second sockets and the second limiting ports are opposite to each other in the axial direction, and some of the second sockets and the second limiting ports are opposite to each other in the radial direction. The second fastening bolts are respectively inserted into the relatively arranged second limiting ports and second sockets, and the second fastening bolt is threadedly connected to at least one of the planetary system and the box body.

[0013] In another aspect, according to the embodiments of the present application, a transmission system for a wind turbine generator is provided, including: a main shaft system, including a bearing seat, a main shaft and a main bearing. The bearing seat is sleeved outside the main shaft, and the main bearing is arranged between the bearing seat and the main shaft; the above-mentioned gearbox, wherein the adapter ring is fixedly connected to the bearing seat, the planet carrier on the input side of the gearbox is fixedly connected to the main shaft, and the planet carrier is rotationally supported by the box body through the main bearing.

[0014] In still another aspect, according to the embodiments of the present application, a wind turbine generator is provided, including the above-mentioned transmission system.

[0015] In another aspect, according to an embodiment of the present application, a disassembly method of a transmission system is provided, which is used for the above-mentioned transmission system. The disassembly method includes:

[0016] The relative position of the main shaft of the main shaft system and the bearing seat is locked, so that the relative position of the planet carrier and the adapter ring and the relative position of the planet carrier and the housing remain stationary.

[0017] The first positioning member is installed from the radial outer side of the adapter ring through the first limiting opening to fix the relative arrangement of the planetary system and the adapter ring in the radial direction of the gear ring.

[0018] The second positioning member is installed through the second limiting opening to fix the relative position of the planetary system and the box in at least one direction of the radial direction and the axial direction.

[0019] Remove the first connecting piece between the main shaft and the planet carrier and the second connecting piece between the adapter ring and the bearing seat.

[0020] Separate and remove the gearbox as a whole from the main shaft system.

[0021] In another aspect, according to an embodiment of the present application, there is provided a method for assembling a transmission system, comprising:

[0022] A gearbox is provided, the gearbox comprising a planetary system, a gear ring, a housing, an adapter ring, a first positioning member and a second positioning member, the planetary system comprising a planet carrier, a sun gear and a plurality of planetary gears, the plurality of planetary gears respectively rotatingly cooperate with the planet carrier, the sun gear meshing with the planetary gears, the gear ring surrounding the planetary system and meshing with the planetary gears, the two ends of the planetary system protruding from the gear ring along the axial direction of the gear ring, the housing is connected to one side of the gear ring in the axial direction and surrounding a part of the planetary system, the positive projection of the housing in the axial direction covers at least a part of the planetary system, the adapter ring is connected to one side of the gear ring in the axial direction away from the housing and surrounding the planetary system, the adapter ring is provided with a first limiting opening, the first positioning member is installed to the planet carrier and the adapter ring through the first limiting opening and along the radial outer side of the adapter ring to limit the relative position of the planet carrier and the adapter ring in the radial direction of the gear ring, the housing is provided with a second limiting opening, the second positioning member is installed to the planet carrier and the housing through the second limiting opening to limit the relative position of the planet carrier and the housing in at least one direction in the radial direction and the axial direction;

[0023] A main shaft system is provided, the main shaft system comprises a bearing seat, a main shaft and a main bearing, the bearing seat is sleeved on the outside of the main shaft, and the main bearing is arranged between the bearing seat and the main shaft;

[0024] The main shaft is connected to the planet carrier through a first connecting member, and the housing is connected to the adapter ring through a second connecting member;

[0025] Remove the first positioning member and the second positioning member.

[0026] According to another aspect of the embodiments of the present application, before the steps of connecting the main shaft to the planet carrier through the first connecting member and connecting the box body to the adapter ring through the second connecting member, the assembly method further includes:

[0027] After pushing the main shaft system and the gear box closer to each other by a predetermined distance, insert the connecting guide pins into the main shaft and the planet carrier. The guide pins extend along the axial direction of the ring gear.

[0028] According to another aspect of the embodiments of the present application, before the step of providing the gear box, the assembly method further includes a gear box assembly step, and the gear box assembly step includes:

[0029] Provide a first-stage assembly, the first-stage assembly includes a planetary system and a ring gear. The planetary system includes a planet carrier, a sun gear, and a plurality of planet gears. The plurality of planet gears are respectively rotatably matched with the planet carrier. The sun gear meshes with each planet gear. The ring gear surrounds the planetary system and meshes with each planet gear. Along the axial direction of the ring gear, both ends of the planetary system protrude from the ring gear;

[0030] Provide an adapter ring and a box body. The adapter ring is provided with a first limiting port, and the box body is provided with a second limiting port;

[0031] Place the box body vertically so that the opening of the box body faces upward in the vertical direction;

[0032] Flip the first-stage assembly so that the axial direction of the ring gear extends in the vertical direction, and place the first-stage assembly into the box body from the opening in the vertical direction and abut against the box body;

[0033] Connect the box body to the ring gear, and install the second positioning member through the second limiting port;

[0034] Vertically sleeved the adapter ring on the planet carrier and abut against the ring gear;

[0035] Connect the adapter ring to the ring gear, and install the first positioning member through the first limiting port.

[0036] According to the gearbox, transmission system, wind turbine generator set, disassembly and assembly method provided by the embodiments of the present application, since a transfer ring is newly added to the gearbox and a first limiting port is provided on the transfer ring, a second limiting port is provided on the box body, and the first limiting port can be used to install a first positioning member from the radial outside of the transfer ring to limit the relative position of the planet carrier and the transfer ring in the radial direction of the ring gear. The second limiting port can be used to install a second positioning member to limit the relative position of the planet carrier and the box body in at least one direction in the radial direction and the axial direction. Even when the gearbox shares the main bearing with the main shaft system, the relative position of the planet carrier and the transfer ring in the radial direction and the relative position of the planet carrier and the box body in at least one direction in the radial direction and the axial direction can be limited by installing the first positioning member in the first limiting port and the second positioning member in the second limiting port. Even if the gearbox is disassembled separately and separated from the main shaft system, the planet carrier of the gearbox can be supported by the first positioning member installed in the first limiting port and the second positioning member installed in the second limiting port, so that the planetary gear train inside the gearbox can be fixed on its own axis, which is convenient for the separate replacement and maintenance of the gearbox and reduces the maintenance cost. Moreover, the setting of the first limiting port can be used to install the first positioning member from the radial outside of the transfer ring, and the installation of the first positioning member can be realized without positioning and moving the main shaft system or the gearbox, reducing the construction difficulty. Brief Description of the Drawings

[0037] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings.

[0038] Figure 1 is a schematic structural diagram of a wind turbine generator set according to an embodiment of the present application;

[0039] Figure 2 A partial cross-sectional view of a transmission system according to an embodiment of the present application;

[0040] Figure 3 is a front view of a gearbox according to an embodiment of the present application;

[0041] Figure 4 is Figure 3 a cross-sectional view taken along the line A-A in

[0042] Figure 5 is Figure 4 a partial enlarged view at C in

[0043] Figure 6 is Figure 3 a cross-sectional view taken along the line B-B in

[0044] Figure 7 is Figure 6 a partial enlarged view at D in

[0045] Figure 8It is a schematic flowchart of the disassembly method of the transmission system according to an embodiment of the present application;

[0046] Figure 9 It is a schematic flowchart of the assembly method of the transmission system according to an embodiment of the present application;

[0047] Figure 10 It is a schematic installation diagram of the guide pin corresponding to the assembly method of the transmission system according to an embodiment of the present application;

[0048] Figure 11 It is a specific schematic flowchart of step S310 in the disassembly and assembly method of the transmission system according to an embodiment of the present application;

[0049] Figure 12 It is a schematic structural diagram corresponding to step S310 in the disassembly and assembly method of the transmission system according to an embodiment of the present application.

[0050] 1 - Transmission system;

[0051] 100 - Gearbox;

[0052] 10 - Planetary system; 11 - Planet carrier; 111 - First socket; 112 - Second socket; 12 - Sun gear; 13 - Planet gear;

[0053] 20 - Ring gear;

[0054] 30 - Housing; 31 - Second limit port;

[0055] 40 - Adapter ring; 41 - First limit port;

[0056] 50 - First positioning member; 51 - First fastening bolt;

[0057] 60 - Second positioning member; 61 - Second fastening bolt;

[0058] 200 - Main shaft system; 210 - Bearing housing; 220 - Main shaft; 230 - Main bearing;

[0059] 300 - First connecting member; 400 - Second connecting member; 500 - Guide pin;

[0060] 2 - Tower; 3 - nacelle; 4 - Generator; 5 - Impeller; 501 - Hub; 502 - Blade;

[0061] X - Axial direction; Y - Radial direction; Z - Circumferential direction.

[0062] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. Detailed embodiments

[0063] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0064] The orientation terms appearing in the following description are all the directions shown in the drawings, and do not limit the specific structures of the gearbox, transmission system, wind turbine generator set, disassembly and assembly method of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0065] As Figure 1 shown, an embodiment of the present application provides a wind turbine generator set, including a wind turbine foundation, a tower 2, a nacelle 3, a generator 4, a transmission system 1, and an impeller 5. The tower 2 is connected to the wind turbine foundation, the nacelle 3 is arranged at the top of the tower 2, the generator 4 is arranged in the nacelle 3, the impeller 5 includes a hub 501 and a plurality of blades 502 connected to the hub 501, and the hub 501 of the impeller 5 is connected to the rotor of the generator 4 through the transmission system 1. When the wind acts on the blades 502, the impeller 5 can drive the rotor of the generator 4 to rotate relative to the stator through the transmission system 1, so as to convert wind energy into electrical energy, thereby meeting the power generation requirements of the wind turbine generator set.

[0066] As Figure 2 shown, a transmission system 1 provided by an embodiment of the present application includes a main shaft system 200 and a gearbox 100. The main shaft system 200 includes a bearing housing 210, a main shaft 220, and a main bearing 230. The bearing housing 210 is sleeved outside the main shaft 220, the main bearing 230 is arranged between the bearing housing 210 and the main shaft 220, and the gearbox 100 includes a planetary system 10. The planet carrier of the planetary system 10 is rotatably supported on the housing 30 through the main bearing 230.

[0067] Since the planetary system 10 of the gearbox 100 is arranged close to the main shaft system 200 and shares the main bearing 230 with the main shaft system 200, when the gearbox 100 is disassembled separately relative to the main shaft system 200, the planetary carrier of the planetary system has no supporting structure, resulting in that the planetary system inside the entire gearbox 100 cannot be fixed on its own axis, making it inconvenient to replace and repair the gearbox 100 separately. If the transmission system 1 is replaced as a whole, the impeller 5 will be lowered, which will result in high maintenance costs.

[0068] Based on this, an embodiment of the present application further provides a new gearbox 100. The gearbox 100 can be used in the transmission system 1 provided in the above embodiments. The gearbox 100 can be replaced independently, and the maintenance cost is low.

[0069] like Figures 2 to 7 As shown, a gearbox 100 provided by an embodiment of the present application includes a planetary system 10, a ring gear 20, a housing 30 and an adapter ring 40. The planetary system 10 includes a planet carrier 11, a sun gear 12 and a plurality of planetary gears 13. The plurality of planetary gears 13 are respectively rotatably matched with the planet carrier 11, and the sun gear 12 is meshed with each planetary gear 13. The ring gear 20 is arranged around the planetary system 10 and meshes with each planetary gear 13. Along the axial direction X of the ring gear 20, the two ends of the planetary system 10 are respectively protruded from the ring gear 20. The housing 30 is connected to one side of the ring gear 20 in the axial direction X and is arranged around part of the planetary system 10. The orthographic projection of the housing 30 in the axial direction X covers at least part of the planetary system 10. The adapter ring 40 is connected to the side of the ring gear 20 in the axial direction X away from the housing 30 and is arranged around the planetary system 10. Among them, a first limit opening 41 is provided on the adapter ring 40, and the first limit opening 41 can be used to install a first positioning member 50 from the radial Y outer side of the adapter ring 40 to limit the relative position of the planetary carrier 11 and the adapter ring 40 on the radial Y of the ring gear 20. A second limit opening 31 is provided on the housing 30, and the second limit opening 31 can be used to install a second positioning member 60 to limit the relative position of the planetary carrier 11 and the housing 30 in at least one direction in the radial Y and axial X.

[0070] The number of the first limiting openings 41 provided on the adapter ring 40 can be multiple, and when multiple, the multiple first limiting openings 41 are spaced apart in the circumferential direction Z of the gear ring 20, and can be spaced apart and evenly provided. The first limiting openings 41 can be circular or polygonal.

[0071] The number of the second limiting openings 31 provided on the box body 30 can be multiple. When there are multiple second limiting openings 31, the multiple second limiting openings 31 are arranged at intervals in the circumferential direction Z of the gear ring 20, and can be arranged at intervals and evenly. The second limiting openings 31 can be circular or polygonal.

[0072] The second positioning member 60 installed from the second limiting port 31 can limit the relative position of the planet carrier 11 and the housing 30 in the radial direction Y or the axial direction X, or can also limit the relative position of the planet carrier 11 and the housing 30 in both the radial direction Y and the axial direction X.

[0073] The first positioning member 50 and the second positioning member 60 can be components of the gearbox 100 or externally configured structural members. When the gearbox 100 needs to be disassembled and assembled, the first positioning member 50 and the second positioning member 60 are installed into the corresponding first limiting port 41 and second limiting port 31.

[0074] For the gearbox 100 provided by an embodiment of the present application, when used in the transmission system 1, its adapter ring 40 can be fixedly connected to the bearing seat 210, optionally fixedly connected through the second connecting member 400. The planet carrier 11 located on the input side of the gearbox 100 is fixedly connected to the main shaft 220. Since the adapter ring 40 is newly added and the first limiting port 41 is provided on the adapter ring 40, the second limiting port 31 is provided on the housing 30, and the first limiting port 41 can be used to install the first positioning member 50 from the outer side of the adapter ring 40 in the radial direction Y to limit the relative position of the planet carrier 11 and the adapter ring 40 in the radial direction Y of the ring gear 20, and the second limiting port 31 can be used to install the second positioning member 60 to limit the relative position of the planet carrier 11 and the housing 30 in at least one direction in the radial direction Y and the axial direction X. Even when the gearbox 100 shares the main bearing 230 with the main shaft system 200, the relative position of the planet carrier 11 and the adapter ring 40 in the radial direction Y and the relative position of the planet carrier 11 and the housing 30 in at least one direction in the radial direction Y and the axial direction X can be limited by installing the first positioning member 50 in the first limiting port 41 and the second positioning member 60 in the second limiting port 31. Even if the gearbox 100 is separately disassembled and separated from the main shaft system 200, the planet carrier 11 of the gearbox 100 can be supported by the first positioning member 50 installed from the first limiting port 41 and the second positioning member 60 installed from the second limiting port 31, so that the planetary gear 13 system inside the gearbox 100 can be fixed on its own axis, facilitating the separate replacement and maintenance of the gearbox 100 and reducing the maintenance cost.

[0075] Moreover, the setting of the first limiting port 41 can be used to install the first positioning member 50 from the outer side of the adapter ring 40 in the radial direction Y, and the installation of the first positioning member 50 can be realized without positioning and moving the main shaft system 200 or the gearbox, reducing the construction difficulty.

[0076] As Figures 2 to 5 shown, in some optional embodiments, for the gearbox 100 provided by an embodiment of the present application, the gearbox 100 includes a first positioning member 50 installed in the first limiting port 41, and the first positioning member 50 is detachably connected to the adapter ring 40 and the planet carrier 11 respectively.

[0077] By making the gearbox 100 include the first positioning member 50, the gearbox 100 can be produced separately and set independently for factory shipment. At the same time, the first positioning member 50 is detachably connected to the adapter ring 40 and the planet carrier 11 respectively. When the gearbox 100 is connected to the main shaft system 200 and the gearbox 100 needs to work, the first positioning member 50 can be removed to avoid affecting the normal working requirements of the gearbox 100.

[0078] In some alternative embodiments, for the gearbox 100 provided by an embodiment of the present application, a first socket 111 is provided on the planet carrier 11. In the radial direction Y of the gear ring 20, the first limiting port 41 and the first socket 111 are at least partially oppositely arranged. The first positioning member 50 can be inserted into the first limiting port 41 and the first socket to fix the relative position of the planet carrier 11 and the adapter ring 40 in the radial direction Y.

[0079] The first limiting port 41 and the first socket 111 can be partially oppositely arranged. Of course, their shapes can also be exactly the same.

[0080] The first positioning member 50 can include structures such as positioning bolts, screws, positioning blocks, etc., so as to be easily inserted into the first limiting port 41 and the first socket 111 to fix the relative position of the planet carrier 11 and the adapter ring 40 in the radial direction Y.

[0081] For the gearbox 100 provided by an embodiment of the present application, by providing the first socket 111 on the planet carrier 11, the first positioning member 50 can be inserted into the first limiting port 41 and the first socket 111 to fix the relative position of the planet carrier 11 and the adapter ring 40 in the radial direction Y. This can not only ensure the support for the planet carrier 11 when the planet carrier 11 and the main shaft 220 are separated during the disassembly and assembly of the gearbox 100, and ensure that the planetary system 10 inside the gearbox 100 can be fixed on its own axis without offset. At the same time, it is beneficial for the first positioning member 50 to be installed from the outside of the adapter ring 40 in the radial direction Y into the adapter ring 40 and the planet carrier 11, reducing the disassembly and assembly difficulty of the first positioning member 50 and improving the disassembly and assembly efficiency.

[0082] In some alternative embodiments, for the gearbox 100 provided by an embodiment of the present application, the number of the first limiting ports 41 and the first sockets 111 are respectively multiple and arranged in one-to-one correspondence. The multiple first limiting ports 41 are spaced along the circumferential direction Z of the gear ring 20. The first positioning member 50 includes a first fastening bolt 51. The first fastening bolt 51 is inserted into each set of relatively arranged first limiting ports 41 and first sockets 111 along the radial direction Y, and the first fastening bolt 51 is threadedly connected to at least one of the planetary system 10 and the adapter ring 40.

[0083] The first fastening bolt 51 can be inserted and arranged in each of the first limiting ports 41 and the first sockets 111 set in a one-to-one manner.

[0084] The first fastening bolt 51 can be threadedly connected to the planet carrier 11 and its end cap abuts against the outer peripheral surface of the adapter ring 40, or the bottom of the first fastening bolt 51 can be inserted into the first socket 111 and abut against the planet carrier 11, and the first fastening bolt 51 is threadedly connected to the adapter ring 40.

[0085] For the gearbox 100 provided in an embodiment of the present application, by making the number of the first limiting ports 41 and the first sockets be multiple and set in a one-to-one manner, the first fastening bolt 51 can be inserted into each group of the first limiting ports 41 and the first sockets, and the planet carrier 11 can be supported in multiple directions, making its force more uniform and reducing the probability of deviating from its own axis after being separated from the main shaft system 200. At the same time, by making the first positioning member 50 include the first fastening bolt 51 and threadedly connecting it to at least one of the planetary system 10 and the adapter ring 40, it is not only beneficial to install the first fastening bolt 51 from the outer side of the radial direction Y of the adapter ring 40 into the adapter ring 40 and the planet carrier 11, reducing the disassembly and assembly difficulty of the first positioning member 50, but also can utilize the self-locking principle of the threaded connection between the first fastening bolt 51 and at least one of the planetary system 10 and the adapter ring 40 to ensure the stability of the relative positions of the adapter ring 40 and the planet carrier 11.

[0086] It can be understood that the first positioning member 50 including the first fastening bolt 51 is only an optional implementation manner, but is not limited to the above structural form. In some embodiments, the first positioning member 50 can also include a first limiting block (not shown in the figure). The first limiting block supports between the adapter ring 40 and the planet carrier 11 along the radial direction Y, and the opening size of the first limiting port 41 is larger than the maximum width size of the first limiting block, so that the first limiting block can enter or leave the gap between the adapter ring 40 and the planet carrier 11 from the first limiting port 41.

[0087] For the gearbox 100 provided in an embodiment of the present application, by making the first positioning member 50 include the first limiting block and making the first limiting block support between the adapter ring 40 and the planet carrier 11 along the radial direction Y, the support of the planet carrier 11 can also be realized, making its force more uniform and reducing the probability of deviating from its own axis after being separated from the main shaft system 200.

[0088] In some optional embodiments, when the first positioning member 50 includes a first limiting block, a first socket can also be provided on the planet carrier 11. The first limiting port 41 and the first socket 111 can be partially opposed. The first limiting block can enter the gap between the adapter ring 40 and the planet carrier 11 from the outer side of the radial direction Y of the adapter ring 40 through the first limiting port 41. The first socket 111 can be used to limit the first limiting block, reducing the probability of the first limiting block moving in the axial direction X of the ring gear 20 and ensuring the support effect.

[0089] In some optional embodiments, the number of the first limiting blocks can be multiple. The multiple first limiting blocks are spaced apart in the circumferential direction Z of the ring gear 20. By providing multiple first limiting blocks, the planet carrier 11 can be supported in multiple directions, making the force more uniform and reducing the probability of deviating from its own axis after being separated from the main shaft system 200.

[0090] Optionally, when including the first socket 111, the number of both the first socket 111 and the first limiting port 41 can be multiple and set one-to-one. Each first limiting block can partially extend into one of the first sockets 111 and be at least partially clamped between the adapter ring 40 and the planet carrier 11.

[0091] That is to say, when the first positioning member 50 includes at least one of the first fastening bolt 51 and the first limiting block, the first socket 111 can be provided on the planet carrier 11. Further optionally, the number of both the first socket 111 and the first limiting port 41 can be multiple and can be partially opposed in the radial direction Y. The first positioning member 50 can be partially inserted into the first socket 111 and limit the relative position of the planet carrier 11 and the adapter ring 40 in the radial direction Y of the ring gear 20.

[0092] Optionally, the first positioning member 50 can include one of the first fastening bolt 51 and the first limiting block. Of course, the first positioning member 50 can also include both the first fastening bolt 51 and the first limiting block. For example, the first limiting block can be provided between at least a set of two adjacent first fastening bolts 51. The relative position of the planet carrier 11 and the adapter ring 40 can be doubly limited by the first fastening bolt 51 and the first limiting block, reducing the probability of the planet carrier 11 deviating from its own axis after being separated from the main shaft system 200.

[0093] Optionally, when the first positioning member 50 includes both the first fastening bolt 51 and the first limiting block, the number of both can be multiple. The first positioning member 50 and the first limiting block can be distributed along the circumferential direction Z of the ring gear 20 and can be alternately distributed along the circumferential direction Z of the ring gear 20. Optionally, a first limiting port 41 can be provided corresponding to each first positioning member 50 and the first limiting block.

[0094] Such as Figure 6 、Figure 7 As shown, in some alternative embodiments, a gearbox 100 provided by an embodiment of the present application includes a second positioning member 60 mounted in a second limiting port 31, and the second positioning member 60 is detachably connected to the box body 30 and the planet carrier 11 respectively.

[0095] By making the gearbox 100 include the second positioning member 60, the gearbox 100 can be produced separately and set independently at the factory. At the same time, since the second positioning member 60 is detachably connected to the box body 30 and the planet carrier 11, the second positioning member 60 can be removed after the gearbox 100 is connected to the main shaft system 200 and when the gearbox 100 needs to work, so as to avoid affecting the normal working requirements of the gearbox 100.

[0096] In some alternative embodiments, a second socket 112 is provided on the planet carrier 11. The second socket 112 is at least partially opposite to the second limiting port 31, and the second positioning member 60 can be inserted into the second limiting port 31 and the second socket 112 to fix the relative position of the planet carrier 11 and the box body 30 in at least one of the axial direction X and the radial direction Y.

[0097] Optionally, the second socket 112 and the second limiting port 31 can be at least partially opposite in the radial direction Y. This is an alternative embodiment. In some embodiments, the second socket 112 and the second limiting port 31 can also be at least partially opposite in the axial direction X. Of course, in some embodiments, some of the second sockets 112 and the second limiting ports 31 can be opposite in the radial direction Y, and some of the second sockets 112 and the second limiting ports 31 can be opposite in the axial direction X.

[0098] The second limiting port 31 and the second socket 112 can be partially opposite. Of course, their shapes can also be exactly the same.

[0099] The second positioning member 60 can include a positioning bolt, a screw, a positioning block and other structures to facilitate insertion into the second limiting port 31 and the second socket 112 and fix the relative position of the planet carrier 11 and the box body 30 in at least one direction of the radial direction Y and the axial direction X.

[0100] In some alternative embodiments, for the gearbox 100 provided by an embodiment of the present application, by providing a second socket 112 on the planet carrier 11, the second positioning member 60 can be inserted into the second limiting port 31 and the second socket 112 to fix the relative positions of the planet carrier 11 and the housing 30 in at least one direction in the radial direction Y and the axial direction X. This can not only ensure the support of the planet carrier 11 when the planet carrier 11 is separated from the main shaft 220 during disassembly and assembly of the gearbox 100, but also ensure that the planetary system 10 inside the gearbox 100 can be fixed on its own axis without offset. At the same time, it is beneficial for the second positioning member 60 to be installed from the outside of the housing 30 into the housing 30 and the planet carrier 11, reducing the disassembly and assembly difficulty of the second positioning member 60 and improving the disassembly and assembly efficiency.

[0101] In some alternative embodiments, for the gearbox 100 provided by an embodiment of the present application, the number of the second sockets 112 and the second limiting ports 31 is multiple. The second positioning member 60 includes a second fastening bolt 61. A part of the second sockets 112 and the second limiting ports 31 are oppositely arranged in the axial direction X, and a part of the second sockets 112 and the second limiting ports 31 are oppositely arranged in the radial direction Y. The second fastening bolts 61 are respectively inserted into the oppositely arranged second limiting ports 31 and second sockets 112, and the second fastening bolts 61 are threadedly connected to at least one of the planetary system 10 and the housing 30.

[0102] The second fastening bolt 61 can be threadedly connected to the planet carrier 11 and its end cap abuts against the outer wall surface of the housing 30, or the bottom of the second fastening bolt 61 can be inserted into the second socket 112 and abut against the planet carrier 11, and the second fastening bolt 61 is threadedly connected to the housing 30.

[0103] For the gearbox 100 provided by an embodiment of the present application, by making the number of the second limiting ports 31 and the second sockets 112 be multiple and arranged one-to-one, the second fastening bolts 61 can be inserted into each group of the second limiting ports 31 and the second sockets 112, and the planet carrier 11 can be supported in multiple directions, making its force more uniform and reducing the probability of deviating from its own axis after being separated from the main shaft system 200. At the same time, by making the second positioning member 60 include the second fastening bolt 61 and threadedly connecting it to at least one of the planetary system 10 and the housing 30, the disassembly and assembly difficulty of the second positioning member 60 can be reduced, and the self-locking principle of the threaded connection between the second fastening bolt 61 and at least one of the planetary system 10 and the housing 30 can be utilized to ensure the stability of the relative positions of the adapter ring 40 and the housing 30.

[0104] The transmission system 1 provided by an embodiment of the present application, since it includes the gearbox 100 provided by the above embodiments, can not only share the main bearing 230 with the main shaft system 200 during operation, simplify the structure, and reduce costs. At the same time, the gearbox 100 can be disassembled and installed independently, reducing the maintenance cost. Moreover, the setting of the first limiting port 41 can be used to install the first positioning member 50 from the outer side of the radial direction Y of the adapter ring 40, and the installation of the first positioning member 50 can be realized without positioning and moving the main shaft system 200 or the gearbox, reducing the construction difficulty.

[0105] The wind turbine provided by an embodiment of the present application, since it includes the transmission system 1 provided by the above embodiments, therefore, has all the advantages of the transmission system 1 and low operation and maintenance costs.

[0106] As Figures 2 to 8 shown, on the other hand, an embodiment of the present application also provides a disassembly method of a transmission system 1 for the above-mentioned transmission system 1. The disassembly method includes:

[0107] S110. Lock the relative positions of the main shaft 220 of the main shaft system 200 and the bearing seat 210, so that the relative positions of the planet carrier 11 and the adapter ring 40 and the relative positions of the planet carrier 11 and the box body 30 remain stationary.

[0108] S120. Install the first positioning member 50 from the outer side of the radial direction Y of the adapter ring 40 through the first limiting port 41 to fix the relative positions of the planetary system 10 and the adapter ring 40 in the radial direction Y of the ring gear 20.

[0109] S130. Install the second positioning member 60 through the second limiting port 31 to fix the relative positions of the planetary system 10 and the box body 30 in at least one direction of the radial direction Y and the axial direction X.

[0110] S140. Remove the first connecting member 300 between the main shaft 220 and the planet carrier 11 and the second connecting member 400 between the adapter ring 40 and the bearing seat 210.

[0111] S150. Separate and remove the gearbox 100 as a whole from the main shaft system 200.

[0112] In step S110, the locking of the main shaft system 200 can be locked through the locking structure connected between the hub 501 and the main shaft system 200. Of course, a positioning pin or other structures can also be inserted between the main shaft 220 and the bearing seat 210 for locking.

[0113] In step S120, the installed first positioning member 50 may include at least one of a first fastening bolt 51 and a first limiting block. When the first fastening bolt 51 is included, the first fastening bolt 51 may be inserted into each set of oppositely arranged first limiting ports 41 and first sockets 111 along the radial direction Y, and the first fastening bolt 51 is threadedly connected to at least one of the planetary system 10 and the adapter ring 40. Optionally, when the number of the first fastening bolts 51 is multiple, the multiple first fastening bolts 51 may be sequentially inserted into each set of oppositely arranged first limiting ports 41 and first sockets 111 along the radial direction Y. Optionally, when the first positioning member includes the first limiting block, the first limiting block may be placed from the first limiting port 41 into the gap between the adapter ring 40 and the planet carrier 11, and radially support between the adapter ring 40 and the planet carrier 11 in the Y direction. The above methods can all fix the relative arrangement of the planetary system 10 and the adapter ring 40 in the radial direction Y of the ring gear 20.

[0114] In step S130, the second positioning member 60 installed through the second limiting port 31 may fix the relative position of the planetary system 10 and the housing 30 in the radial direction Y or the axial direction X. Of course, the relative position of the planetary system 10 and the housing 30 may also be fixed simultaneously in the radial direction Y and the axial direction X. When the second positioning member 60 includes a second fastening bolt 61, a part of the second fastening bolts 61 may be inserted into the second sockets 112 and the second limiting ports 31 oppositely arranged in the radial direction Y and threadedly connected to at least one of the planetary system 10 and the housing 30, and a part of the second fastening bolts 61 may be inserted into the second sockets 112 and the second limiting ports 31 oppositely arranged in the axial direction X and threadedly connected to at least one of the planetary system 10 and the housing 30.

[0115] In step S140, the mentioned first connecting member 300 and second connecting member 400 may be fasteners such as studs and bolts. After removing the first connecting member 300 and the second connecting member 400, the gearbox and the main shaft system 200 are not connected to each other, and the planet carrier 11 of the planetary system 10 is supported by the first positioning member 50 and the second positioning member 60.

[0116] In step S150, the gearbox 100 as a whole may be horizontally disassembled and withdrawn.

[0117] The disassembly method of the transmission system 1 provided in one embodiment of the present application can be used for disassembly of the transmission system 1 provided in the above-mentioned embodiments. The first positioning member 50 is installed through the first limiting opening 41 to fix the relative arrangement of the planetary system 10 and the adapter ring 40 in the radial direction Y of the ring gear 20. The second positioning member 60 is installed through the second limiting opening 31 to fix the relative position of the planetary system 10 and the housing 30 in at least one direction in the radial direction Y and the axial direction X. Then, when the gearbox 100 is separated from the main shaft system 200 and disassembled, the planetary carrier 11 of the gearbox 100 can be supported by the first positioning member 50 installed by the first limiting opening 41 and the second positioning member 60 installed by the second limiting opening 31, so that the planetary system 10 inside the gearbox 100 can be fixed on its own axis, which is convenient for the separate replacement and maintenance of the gearbox 100 and reduces the maintenance cost. Furthermore, the first limiting opening 41 can be used to install the first positioning member 50 from the radial Y outer side of the adapter ring 40, and the first positioning member 50 can be installed without positioning and moving the main shaft system 200 or the gear box, thereby reducing the difficulty of construction.

[0118] like Figures 2 to 7 as well as Figure 9 As shown, in another aspect, an embodiment of the present application further provides an assembly method of a transmission system 1, which is used for the above-mentioned transmission system 1, and the assembly method includes:

[0119] S210, provide a gearbox 100, the gearbox 100 includes a planetary system 10, a ring gear 20, a housing 30, an adapter ring 40, a first positioning member 50 and a second positioning member 60, the planetary system 10 includes a planetary carrier 11, a sun gear 12 and a plurality of planetary gears 13, the plurality of planetary gears 13 are respectively rotatably matched with the planetary carrier 11, the sun gear 12 is meshed with each planetary gear 13, the ring gear 20 is arranged around the planetary system 10 and is meshed with each planetary gear 13, along the axial direction X of the ring gear 20, the two ends of the planetary system 10 are respectively protruded from the ring gear 20, the housing 30 is connected to one side of the ring gear 20 in the axial direction X and is arranged around a portion of the planetary system 10, and the housing 30 is projected on the axial direction X. The shadow covers at least a portion of the planetary system 10, the adapter ring 40 is connected to the side of the ring gear 20 that is away from the housing 30 in the axial direction X and is arranged around the planetary system 10, the adapter ring 40 is provided with a first limit opening 41, the first positioning member 50 is installed to the planetary carrier 11 and the adapter ring 40 through the first limit opening 41 and along the radial Y outer side of the adapter ring 40 to limit the relative position of the planetary carrier 11 and the adapter ring 40 in the radial direction Y of the ring gear 20, the housing 30 is provided with a second limit opening 31, the second positioning member 60 is installed to the planetary carrier 11 and the housing 30 through the second limit opening 31 to limit the relative position of the planetary carrier 11 and the housing 30 in at least one direction in the radial direction Y and the axial direction X.

[0120] S220. Provide a main shaft system 200, which includes a bearing housing 210, a main shaft 220, and a main bearing 230. The bearing housing 210 is sleeved outside the main shaft 220, and the main bearing 230 is disposed between the bearing housing 210 and the main shaft 220.

[0121] S230. Connect the main shaft 220 to the planet carrier 11 through a first connecting member 300, and connect the housing 30 to the adapter ring 40 through a second connecting member 400.

[0122] S240. Remove the first positioning member 50 and the second positioning member 60.

[0123] The mentioned first connecting member 300 and second connecting member 400 may be fasteners such as studs and bolts.

[0124] For the assembly method of the transmission system 1 provided by an embodiment of the present application, by making the provided gearbox 100 include an adapter ring 40, a first positioning member 50, a second positioning member 60, a first limiting port 41 for installing the first positioning member 50, and a second limiting port 31 for installing the second positioning member 60, when the gearbox 100 is docked with the main shaft system 200, the planet carrier 11 of the gearbox 100 can be supported by the first positioning member 50 installed through the first limiting port 41 and the second positioning member 60 installed through the second limiting port 31, so that the planetary system 10 inside the gearbox 100 can be fixed on its own axis, ensuring the centering with the main shaft system 200. There is no need to provide multiple structures for positioning the two in the axial direction X and radial direction Y between the main shaft system 200 and the gearbox 100, reducing the assembly difficulty between the gearbox 100 and the main shaft system 200.

[0125] As Figure 10 shown, in some optional embodiments, for the assembly method of the transmission system 1 provided by an embodiment of the present application, before step S230, the assembly method further includes:

[0126] After pushing the main shaft system 200 and the gearbox 100 close to each other to a predetermined distance, insert a guiding pin 500 into the main shaft 220 and the planet carrier 11. The guiding pin 500 extends along the axial direction X of the ring gear 20.

[0127] Through the above settings, a part of the shear force of the planetary system 10 can be borne by the guiding pin 500, ensuring the centering between the planet carrier 11 and the main shaft 220 and reducing the docking difficulty between the two.

[0128] As Figure 11 and Figure 12 shown, in some optional embodiments, for the assembly method of the transmission system 1 provided by an embodiment of the present application, before step S210, the assembly method further includes a gearbox 100 assembly step, and the gearbox 100 assembly step includes:

[0129] S310. Provide a first-level component, the first-level component includes a planetary system 10 and a ring gear 20. The planetary system 10 includes a planet carrier 11, a sun gear 12, and a plurality of planet gears 13. The plurality of planet gears 13 are respectively rotatably engaged with the planet carrier 11. The sun gear 12 meshes with each planet gear 13. The ring gear 20 is disposed around the planetary system 10 and meshes with each planet gear 13. Along the axial direction X of the ring gear 20, both ends of the planetary system 10 protrude from the ring gear 20.

[0130] S320. Provide an adapter ring 40 and a housing 30. A first limiting port 41 is provided on the adapter ring 40, and a second limiting port 31 is provided on the housing 30.

[0131] S330. Vertically place the housing 30 such that the opening of the housing 30 faces upward in the vertical direction.

[0132] S340. Flip the first-level component such that the axial direction X of the ring gear 20 extends in the vertical direction, and place the first-level component into the housing 30 from the opening in the vertical direction and abut it against the housing.

[0133] S350. Connect the housing 30 to the ring gear 20, and install a second positioning member 60 through the second limiting port 31. Optionally, before installing the second positioning member 60, a process pin can be provided in the second limiting port 31.

[0134] S360. Vertically sleeved the adapter ring 40 on the planet carrier 11 and abut it against the ring gear 20.

[0135] S370. Connect the adapter ring 40 to the ring gear 20, and install a first positioning member 50 through the first limiting port 41.

[0136] The assembly method of the transmission system 1 provided by an embodiment of the present application, through the above method, is beneficial to the assembly of the gearbox 100, and during the assembly process, the planetary system 10 can be fixed on its own axis and is not prone to skew relative to the adapter ring 40, the ring gear 20, and the housing 30, reducing the assembly difficulty.

[0137] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A gearbox, characterized in that, include: A planetary system, comprising a planet carrier, a sun gear and a plurality of planetary gears, wherein the plurality of planetary gears are respectively rotatably matched with the planet carrier, and the sun gear is meshed with each of the planetary gears; A gear ring is arranged around the planetary system and meshes with each of the planetary gears, and along the axial direction of the gear ring, two ends of the planetary system protrude from the gear ring respectively; A box body connected to one side of the gear ring in the axial direction and arranged around a portion of the planetary system, wherein the orthographic projection of the box body in the axial direction covers at least a portion of the planetary system; An adapter ring, connected to the gear ring at a side of the axial direction away from the housing and arranged around the planetary system; Among them, a first limit opening is provided on the adapter ring, and the first limit opening can be used to install a first positioning member from the radial outside of the adapter ring to limit the relative position of the planetary carrier and the adapter ring in the radial direction of the ring gear. A second limit opening is provided on the housing, and the second limit opening can be used to install a second positioning member to limit the relative position of the planetary carrier and the housing in at least one direction of the radial direction and the axial direction.

2. The gearbox according to claim 1, characterized in that, The gear box includes the first positioning member installed in the first limiting opening, and the first positioning member is detachably connected to the adapter ring and the planet carrier respectively.

3. The gearbox according to claim 2, characterized in that, The planet carrier is provided with a first socket. In the radial direction, the first limit opening and the first socket are at least partially arranged opposite to each other. The first positioning member can be inserted into the first limit opening and the first socket to fix the relative positions of the planet carrier and the adapter ring in the radial direction.

4. The gearbox according to claim 3, characterized in that, The number of the first limit openings and the first sockets are respectively multiple and arranged one to one, and the multiple first limit openings are distributed at intervals along the circumference of the ring gear. The first positioning member includes a first fastening bolt, and the first fastening bolt is inserted into each group of the first limit openings and the first sockets that are relatively arranged along the radial direction, and the first fastening bolt is threadedly connected to at least one of the planetary system and the adapter ring.

5. The gearbox according to claim 2, characterized in that, The first positioning member includes a first limit block, which is supported between the adapter ring and the planetary carrier along the radial direction, and the opening size of the first limit opening is larger than the maximum width size of the first limit block, so that the first limit block can enter or leave the gap between the adapter ring and the planetary carrier through the first limit opening.

6. The gearbox according to any one of claims 1 to 5, characterized in that The gear box includes the second positioning member installed in the second limiting opening, and the second positioning member is detachably connected to the box body and the planet carrier respectively.

7. The gearbox according to claim 6, characterized in that, The planet carrier is provided with a second socket, which is at least partially opposite to the second limit opening. The second positioning member can be inserted into the second limit opening and the second socket and fix the relative position of the planet carrier and the casing in at least one of the axial direction and the radial direction.

8. The gearbox according to claim 7, characterized in that, There are multiple numbers of the second sockets and the second limit openings, and the second positioning member includes a second fastening bolt. A part of the second sockets and the second limit openings are relatively arranged in the axial direction, and a part of the second sockets and the second limit openings are relatively arranged in the radial direction. The second fastening bolts are respectively inserted in the relatively arranged second limit openings and second sockets, and the second fastening bolts are threadedly connected to at least one of the planetary system and the box body.

9. A drive system for a wind turbine generator, characterized in that, include: The main shaft system comprises a bearing seat, a main shaft and a main bearing, wherein the bearing seat is sleeved on the outside of the main shaft, and the main bearing is arranged between the bearing seat and the main shaft; The gearbox according to any one of claims 1 to 8, wherein the adapter ring is fixedly connected to the bearing seat, the planet carrier located on the input side of the gearbox is fixedly connected to the main shaft, and the planet carrier is rotatably supported on the housing through the main bearing.

10. A wind turbine generator, characterized in that, Comprising the transmission system as claimed in claim 9.

11. A disassembly method for a transmission system, for the transmission system as described in claim 9, characterized in that, The disassembly method comprises: Locking the relative position of the main shaft of the main shaft system and the bearing seat so that the relative position of the planet carrier and the adapter ring and the relative position of the planet carrier and the housing remain stationary; Installing a first positioning member from the radial outer side of the adapter ring through the first limiting opening to fix the relative arrangement of the planetary system and the adapter ring in the radial direction of the gear ring; A second positioning member is installed through the second limiting opening to fix the relative position of the planetary system and the box in at least one direction of the radial direction and the axial direction; Remove the first connecting piece between the main shaft and the planet carrier and the second connecting piece between the adapter ring and the bearing seat; The gearbox is separated from the main shaft system and removed as a whole.

12. An assembling method of a transmission system, characterized in that, include: A gearbox is provided, the gearbox comprising a planetary system, a gear ring, a housing, an adapter ring, a first positioning member and a second positioning member, the planetary system comprising a planet carrier, a sun gear and a plurality of planetary gears, the plurality of planetary gears respectively rotatably cooperate with the planet carrier, the sun gear meshes with each of the planetary gears, the gear ring is arranged around the planetary system and meshes with each of the planetary gears, along the axial direction of the gear ring, two ends of the planetary system are respectively protruded from the gear ring, the housing is connected to one side of the gear ring in the axial direction and is arranged around a portion of the planetary system, and the orthographic projection of the housing in the axial direction covers at least a portion of the planetary system The planetary system is a planetary system, wherein the adapter ring is connected to the side of the gear ring away from the housing in the axial direction and is arranged around the planetary system, the adapter ring is provided with a first limiting opening, the first positioning member is installed to the planetary carrier and the adapter ring through the first limiting opening and along the radial outer side of the adapter ring to limit the relative position of the planetary carrier and the adapter ring in the radial direction of the gear ring, and the housing is provided with a second limiting opening, the second positioning member is installed to the planetary carrier and the housing through the second limiting opening to limit the relative position of the planetary carrier and the housing in at least one direction in the radial direction and the axial direction; Provide a main shaft system, the main shaft system includes a bearing housing, a main shaft and a main bearing, the bearing housing is sleeved outside the main shaft, and the main bearing is arranged between the bearing housing and the main shaft; Connect the main shaft and the planet carrier through a first connecting member, and connect the housing and the adapter ring through a second connecting member; Remove the first positioning member and the second positioning member.

13. The assembly method according to claim 12, characterized in that, Before the step of connecting the main shaft and the planet carrier through the first connecting member and connecting the housing and the adapter ring through the second connecting member, the assembly method further includes: After pushing the main shaft system and the gearbox close to each other to a predetermined distance, insert a connecting guide pin into the main shaft and the planet carrier, and the guide pin extends along the axial direction of the ring gear.

14. The assembly method according to claim 12, wherein, Before the step of providing the gearbox, the assembly method further includes a gearbox assembly step, and the gearbox assembly step includes: Provide a first-stage assembly, the first-stage assembly includes a planetary system and a ring gear, the planetary system includes a planet carrier, a sun gear and a plurality of planet gears, the plurality of planet gears are respectively rotationally matched with the planet carrier, the sun gear meshes with each planet gear, the ring gear surrounds the planetary system and meshes with each planet gear, and along the axial direction of the ring gear, both ends of the planetary system protrude from the ring gear; Provide an adapter ring and a housing, the adapter ring is provided with a first limiting port, and the housing is provided with a second limiting port; Place the housing vertically so that the opening of the housing faces upward in the vertical direction; Flip the first-stage assembly so that the axial direction of the ring gear extends along the vertical direction, and place the first-stage assembly into the housing from the opening along the vertical direction and abut against the housing; Connect the housing and the ring gear, and install the second positioning member through the second limiting port; Vertically sleeve the adapter ring on the planet carrier and abut against the ring gear; Connect the adapter ring and the ring gear, and install the first positioning member through the first limiting port.

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