Fastening assembly and wind power plant

Abstract

This invention relates to fastening assemblies and wind power installations. The fastening assembly has a housing (40) in which at least one bearing for rotatably supporting a rotor shaft (16) of a wind power installation (10) is fastened. The housing (40) is configured for fastening to a nacelle (20) of the wind power installation (10). The housing (40) is constructed with at least one axially segmented section. The housing (40) has a first section (60) and a second section (62) fastened together.

Description

Technical Field

[0001] This invention relates to a fastening assembly for a drive system of a wind power facility. The invention also relates to a wind power facility. Background Technology

[0002] Wind power facilities are used to generate electricity from wind energy. For this purpose, wind power facilities have rotors. The rotational speed of the rotor is transmitted to a transmission device via the rotor shaft. Here, the transmission device converts the rotational speed of the rotor shaft into a suitable rotational speed to drive the generator.

[0003] A wind turbine's drive system, having at least one rotor shaft, must be supported on the rest of the turbine during operation. For example, this drive system is secured to the nacelle. However, this securing can be very complex and requires many components. Alternatively, securing can be achieved using only a single housing. However, this housing may then be so large and heavy that transporting it to the installation site and assembling it would be extremely costly, or even impossible. Summary of the Invention

[0004] The first aspect relates to a fastening assembly for securing a drive system to a wind turbine. The wind turbine may have a tower and a nacelle disposed thereon. The tower extends vertically, for example, with its longitudinal extension. The nacelle may be supported on the tower, for example, in a rotatable or anti-rotational manner. The nacelle may be disposed at the top of the tower. The tower may be designed to be hollow, for example. The tower may taper towards its upper end. The tower may also be columnar. The tower may have a circular, elliptical, or polygonal cross-section. The tower may be formed, for example, by multiple tower elements stacked on top of each other. The tower may be made of steel, for example, and alternatively or additionally, may be made of concrete.

[0005] A wind power facility may include, for example, a rotor, a transmission, and a generator. The rotor drives the generator via the transmission to generate electrical energy. The rotor is connected to the transmission, for example, via a rotor shaft. The rotor, transmission, and generator may be fastened together to the nacelle of the wind power facility, for example, via a main support. The rotor may have a horizontal or vertical axis of rotation. The rotor may have, for example, two, three, four, or more rotor blades, which are connected to the rotor shaft via hubs. The drive system has at least a rotor shaft. The rotor shaft, transmission, and generator may be, for example, part of the drive system. Optionally, the drive system may also have a rotor, and alternatively or additionally, may have a brake.

[0006] The fastening assembly has a housing. Within this housing, at least one bearing for rotatably supporting the rotor shaft of the wind turbine can be fastened. Alternatively, two bearings for supporting the rotor shaft can be arranged within the housing. If only one bearing is provided, the rotor shaft can be supported by the other bearing in another component of the drive system, such as in a transmission housing. If two bearings are provided in the housing to support the rotor shaft, the drive system may not require additional bearings for the rotor shaft in other components of the drive system. The bearings can be part of the fastening assembly or independent of it. The housing is designed for fastening to the nacelle of the wind turbine. For this purpose, the housing can have a fastening connection. The housing can be fastened to the nacelle, for example, by screwing it onto the frame. The bearings can be designed as rolling bearings, for example. Suitable bearings are, for example, tapered roller bearings. Alternatively, the bearings can be, for example, ball roller bearings, cylindrical roller bearings, ring bearings, or plain bearings. Thus, the rotor shaft can be supported on the nacelle. The nacelle can, for example, have a frame on which the drive system is fastened. The housing, one of the bearings, and an optional second bearing within the housing can form the main support of the drive system. The wind turbine may not have other bearings, but the drive system can be supported on the nacelle of the wind turbine via these other bearings. The main support may not have other bearings. The rotor shaft may be supported on the nacelle solely by the main support. Similarly, the transmission may also be supported on the nacelle solely by the main support. For example, a stationary component of the housing, such as the transmission housing, is fastened to the housing. At least one rotatable part, such as the input shaft of the transmission, can be supported on both bearings via the rotor shaft. Alternatively, the generator may also be supported on the nacelle solely by the main support, for example, indirectly supported on the nacelle via the transmission.

[0007] The first of the two bearings can be axially arranged in the rotor-side end region of the housing. For example, the first bearing forms a rotor-side bearing. The second of the two bearings can be axially arranged in the generator-side end region of the housing. For example, the second bearing forms a generator-side bearing. The two bearings can be axially spaced apart from each other. The two bearings can be coaxially arranged. In the axial region where the two bearings are arranged, the housing can be thickened and alternatively or additionally reinforced. The housing can have a closed, annular region in the axial region, in which the two bearings are respectively arranged. The axial, radial, and circumferential directions can be defined by the rotation axis of the rotor shaft, and alternatively or additionally by the rotation axis of the respective bearing. The two bearings can be secured in the housing with outer rings using loose fit, transition fit, or interference fit, respectively. The two bearings can be secured to the rotor shaft with inner rings using inner rings using clearance fit, transition fit, or interference fit, respectively.

[0008] The housing is constructed with at least one axial division. The housing may be axially divided once, twice, or three times. Therefore, the housing is constructed in a multi-part manner. Thus, the housing may, for example, have an axial profile extending in a plane orthogonal to the axis of rotation of the rotor shaft. The housing may be a casting or a forging. The basic shape of the housing may, for example, be cylindrical or conical.

[0009] For example, due to axial division, the shell forms a first segment and a second segment. These two segments are fastened to each other. If more than two segments are provided due to more than one axial division, there are always two axially adjacent segments that can be fastened to each other in pairs. Each segment can define an axial sub-region of the internal space of the shell. Each of these two segments can be integrally constructed. Each segment can have an upper shell and a lower shell. These segments can be connected to each other using fastening devices, such as screws, rivets, or bolts. The division can be located at the center of the shell in the axial direction. These two segments can be directly adjacent to each other and connected to each other. These two segments can also be indirectly connected to each other, for example, via another segment. The shell can be formed from exactly two segments. The first segment and the second segment can form the axial end members of the shell. These two segments can be arranged on opposite axial end regions of the shell. The basic shape of these two segments can be cylindrical. These two segments taper gradually in the axial direction, for example, in a conical or stepped shape.

[0010] By designing the shell with at least one axial segmentation, the shell can be more easily transported. For example, the two sections can be transported separately by flatbed truck. These sections can be designed to be secured to each other only at the wind turbine installation site. Alternatively, they can be designed to be secured to each other only within the nacelle. This simplifies assembly. Furthermore, manufacturing can be easier. For example, casting the two sections can be simpler and less expensive than casting a single, integrated shell. This makes even high-performance wind turbines more cost-effective in hard-to-reach locations.

[0011] In one embodiment of this fastening assembly, the drive system may be specified to be held on the nacelle of the wind turbine solely via the housing. For example, any other component of the drive system, such as the transmission housing or generator housing, cannot be connected to the nacelle independently of the housing in a load-bearing manner.

[0012] In one embodiment of the fastening assembly, the housing may be formed by at least two axial divisions. A third segment may be additionally constructed on the housing. The first segment may be fastened to the second segment via the third segment. The housing may be divided exactly twice. The first and third segments, as well as the second and third segments, may be directly fastened to each other, for example, without any other segments arranged therebetween. The housing may, for example, be axially divided into three segments. The first segment may be fastened to the third segment, for example, on the rotor side of the third segment. The second segment may be fastened to the third segment, for example, on the generator side of the third segment. The rotor side and the generator side may be axially opposite. These segments may, for example, abut against each other at their end faces. The third segment may be axially arranged between the first and second segments. The third segment may form an axial intermediate segment and, alternatively or additionally, a connecting segment. The basic shape of the third segment may be cylindrical. The third segment may be conical or stepped, gradually tapering towards one end. A first bearing for the rotor shaft may be arranged in the first segment. In the second section, a second bearing for the rotor shaft can be arranged. The third section may not include the bearing arranged therein. This two-section design allows for very compact transport. Furthermore, a modular structure is possible, in which the sections for accommodating the bearings and the axial length between these bearings can be flexibly designed. The housing can also be constructed with three or more axial sections.

[0013] In one embodiment of the fastening assembly, the third segment may have at least one radial through opening in its surrounding wall. This through opening can form an operating hole for assembling the segments onto each other, for example, if the segments are connected within a housing. The radial through opening can reduce the weight of the housing and facilitate maintenance. The bearings may, for example, be constructed with an axial seal. Multiple through openings may also be provided. The through openings can be designed according to structural loads and assembly requirements. The first segment and alternatively or additionally the second segment may not have radial through openings in their surrounding walls. Thus, these segments can be very robust and, for example, can effectively absorb bearing loads. Alternatively, the first segment and alternatively or additionally the second segment may also have at least one radial through opening in their surrounding walls. Thus, these segments can be very lightweight and can improve accessibility for assembly and maintenance within the housing.

[0014] In one embodiment of this fastening assembly, at least one of the segments may be integrally constructed. Multiple or all segments may also be integrally constructed. For example, the first, second, and third segments may each be a single casting or a single forging manufactured as a single piece. The housing can thus be very robust.

[0015] In one embodiment of the fastening assembly, a locating pin may be provided between at least two axially adjacent segments. The locating pin may be arranged, for example, between two contact surfaces of the two axially adjacent segments. For example, the locating pin may be arranged between two abutting end faces. For the locating pin, a blind hole or through hole may be provided in one of the two adjacent segments, and the locating pin is at least partially accommodated in the blind hole or through hole. For through holes, assembly and disassembly can be simple. For blind holes, the locating pin can be held particularly securely. For the locating pin, a blind hole or through hole may also be provided in the other of the two adjacent segments. Alternatively, the locating pin may be integrally constructed with the segment therein. However, the locating pin may also be a component independent of these segments. The locating pin may, for example, have a circular, polygonal, or elliptical cross-sectional shape. Multiple locating pins spaced apart from each other in the circumferential direction may be provided. At least one locating pin may also be provided between each pair of axially adjacent segments. If three sections are provided, multiple locating pins can be arranged, for example, between the first and third sections and between the second and third sections. If two sections are provided, multiple locating pins can be arranged, for example, between the first and second sections. Each fastening component can have its own locating pin. The locating pins can, for example, be arranged circumferentially between the fastening components. The locating pins can, for example, facilitate assembly and improve the force-locking in the circumferential direction between these sections.

[0016] In one embodiment of the fastening assembly, two axially adjacent segments may form corresponding contact surfaces with shoulders for centering the two adjacent segments. These contact surfaces may, for example, have end faces facing each other. One of the two adjacent segments may have an axially or laterally extending protrusion disposed in a corresponding axial recess of the other segment. However, the protrusion may simply overlap the outer or inner edge of the other segment without a corresponding recess there. The shoulder may, for example, be designed as a step. The shoulder, along with the corresponding protrusion and recess, may extend along the entire periphery of the respective segment or may extend only partially. Centering can facilitate coaxial orientation for assembly. The shoulder may also support one of the segments for assembly. The shoulder may be radially positioned closer to the outer periphery of the surrounding wall than the inner periphery. The shoulder may be radially positioned closer to the inner circumference of the surrounding wall than the outer circumference. Shoulders can be arranged radially inside or radially outside the fastening device, and alternatively or additionally, locating pins can be arranged between these two sections. Multiple shoulders can be provided for these two adjacent sections. At least one shoulder can also be provided between each pair of axially adjacent sections on their corresponding contact sides. If three sections are provided, shoulders can be formed, for example, at the contact surfaces of the first and third sections and at the contact surfaces of the second and third sections. Shoulders and protrusions can be integrally constructed on the respective sections.

[0017] In one embodiment of the fastening assembly, at least one of the segments may form a radially projecting flange, on which adjacent segments are fastened. The flange may extend radially inward or radially outward. The flange may form a contact surface for adjacent segments against which they can rest. The flange may have a shoulder. The flange may extend radially away from the surrounding wall of the corresponding segment and be integrally constructed with the wall. The flange may simplify assembly and, for example, allow for thinner surrounding walls. The flange may, for example, form through openings for corresponding fastening devices and locating pins, and alternatively or additionally, may form blind holes for corresponding fastening devices and locating pins. Corresponding radially projecting flanges may be formed on adjacent segments. For each pair of axially adjacent segments, a radially projecting flange may also be formed on at least one segment of each pair of axially adjacent segments to fasten the other segment of each pair of axially adjacent segments. The flange may be integrally constructed on the corresponding segment. The flange may extend along the entire periphery of the corresponding segment or may extend only partially. The flange may have a shoulder, or be disposed radially inside or outside the shoulder.

[0018] In one embodiment of the fastening assembly, it can be specified that two axially adjacent segments are fastened to each other by associated fastening devices. For example, the fastening devices can be designed as screws, bolts, or rivets. If the fastening device is designed as a screw, it can be screwed into an internal thread or secured in a through opening by a nut. A through opening can be provided for each fastening device on each of the two adjacent segments, optionally a through opening with internal threads, or a blind hole with internal threads. Multiple fastening devices spaced apart from each other in the circumferential direction can be provided. At least one fastening device can also be provided for each pair of axially adjacent segments. If three segments are provided, for example, the first and third segments can be fastened to each other using multiple fastening devices, and the second and third segments can be fastened to each other using multiple fastening devices. If two segments are provided, the first and second segments can be fastened to each other using multiple fastening devices. The fastening assembly can have corresponding fastening devices. These fastening devices can, for example, be arranged circumferentially between corresponding locating pins. Alternatively or additionally, these fastening devices can also be arranged on a different radius than the locating pins.

[0019] In one embodiment of this fastening assembly, the fastening device may be specified to extend parallel to the rotor shaft. For example, the longitudinal extension of a screw, bolt, or rivet may be parallel to the axis of rotation of the rotor shaft. Thus, the fastening can, for example, withstand loads that occur during operation well. If multiple fastening devices connect two sections, one, several, or all of these fastening devices may be oriented parallel to the rotor shaft. If three sections are provided, only one, several, or all of these fastening devices may extend parallel to the rotor shaft between a pair of adjacent sections, or they may extend parallel to the rotor shaft between multiple pairs or all pairs of adjacent sections.

[0020] In one embodiment of the fastening assembly, the fastening device may be specified to extend radially inward or radially outward at an angle relative to the rotor shaft. This allows the fastening device to be easily accessed, for example, for assembly or disassembly. For example, the longitudinal extension of a screw, bolt, or rivet may be angled relative to the axis of rotation of the rotor shaft. The fastening device may extend in a plane together with the rotor shaft or may extend transversely to that plane. If multiple fastening devices connect two sections, one, several, or all of these fastening devices may be radially angled relative to the rotor shaft. If three sections are provided, only one, several, or all of these fastening devices may extend radially at an angle relative to the rotor shaft between a pair of adjacent sections, or they may extend radially at an angle relative to the rotor shaft between multiple pairs or all pairs of adjacent sections.

[0021] In one embodiment of this fastening assembly, the fastening devices may be arranged on the housing in a manner accessible from the inside or the outside. For internal accessibility, for example, knobs within the housing are accessible for assembly and disassembly. For this purpose, an assembly worker can climb into the housing, axially introduce tools, or utilize radially penetrating openings in the surrounding walls of one of the sections. In this case, the cabin can be very compact. For external accessibility, for example, knobs outside the housing are accessible for assembly and disassembly. For example, fastening devices may be externally accessible at radially outwardly extending flanges, and fastening devices may be internally accessible at radially inwardly extending flanges. All fastening devices may be accessible from the outside or from the inside. Alternatively, some fastening devices may be internally accessible and some may be externally accessible. For example, fastening devices for fastening a first section to a third section may be internally accessible, and fastening devices for fastening a second section to a third section may be externally accessible.

[0022] In one embodiment of the fastening assembly, it may be specified that the fastening assembly has a drive system. In another embodiment, it may be specified that at least two adjacent segments are sealed. For example, an O-ring may be provided between the respective contact surfaces. For example, seals, such as labyrinth seals or O-rings, may be provided between the first and third segments and between the second and third segments. However, only one seal may be provided at the connection between the first segment or the second and third segments.

[0023] The second aspect relates to a wind power facility having a fastening assembly according to the first aspect. Corresponding advantages and other features are apparent from the description of the first aspect, wherein the design of the first aspect also constitutes the design of the second aspect, and vice versa. The wind power facility may have a tower, a nacelle, and a drive system. The drive system can be fastened to the nacelle by means of the fastening assembly. Attached Figure Description

[0024] Figure 1 The illustration illustrates a wind power facility with a drive system.

[0025] Figure 2 The fastening assembly of the housing with an integral structure for the drive system is illustrated schematically in cross-sectional view.

[0026] Figure 3 A first embodiment of a fastening assembly having a multi-part housing is schematically illustrated in a side view, wherein the housing is axially cut twice in the first embodiment.

[0027] Figure 4 A second embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0028] Figure 5 A third embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0029] Figure 6 A fourth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0030] Figure 7 A fifth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0031] Figure 8 A sixth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0032] Figure 9 A seventh embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0033] Figure 10 The eighth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0034] Figure 11 A ninth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0035] Figure 12 A tenth embodiment of the fastening assembly is illustrated schematically in a cross-sectional view, wherein the housing, which consists of multiple parts, is constructed by dividing the axial portion only once.

[0036] Figure 13 The eleventh embodiment of the fastening assembly is illustrated schematically in a cross-sectional view, wherein the housing, which consists of multiple parts, is also constructed with only one axial division.

[0037] Figure 14 The twelfth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0038] Figure 15 The thirteenth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0039] Figure 16 The details of the thirteenth embodiment of the fastening assembly are illustrated schematically in cross-sectional views.

[0040] Figure 17 The fourteenth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0041] Figure 18 The fifteenth embodiment of the fastening assembly is illustrated schematically in cross-sectional view.

[0042] Figure 19 The first variant of the axially split middle section of the shell is illustrated schematically in a side view.

[0043] Figure 20 A second variant of the axially split, intermediate section of the housing is illustrated schematically in a side view.

[0044] Figure 21 A third variant of the axially split, intermediate section of the housing is illustrated schematically in a side view.

[0045] Figure 22 A third variant of the axially split, intermediate section of the housing is illustrated schematically in a side view. Detailed Implementation

[0046] Figure 1 A wind turbine 10 with a drive system of a horizontal structure type is illustrated. The wind turbine 10 has a rotor 12, which is held on a rotor shaft 16 via a hub 14. The axis of rotation of the rotor shaft 16 extends substantially horizontally. The rotor shaft 16 is housed in a nacelle 20 via two rolling bearings 18, 38. For this purpose, a housing 40 is provided, which is secured to a base 42 of the nacelle 20. The rotor shaft 16 is mechanically connected to a generator 24 via a drive 22. A brake 26 is also arranged in the connection between the drive 22 and the generator 24, acting on the input shaft of the generator 24. The nacelle 20 is rotatably mounted on the upper end of a tower 28 anchored to the ground. In another embodiment, the wind turbine 10 is designed as an off-shore facility. In addition to the tower 28, the wind turbine 10 has a grid connection 30. The first rolling bearing 18 of these rolling bearings faces the rotor 12 and is also referred to as the rotor-side bearing 18. The second rolling bearing 38 of these rolling bearings faces the generator 24 and is also referred to as the generator-side bearing 38. Both rolling bearings 18 and 38 are designed as tapered roller bearings.

[0047] Figure 2 The fastening assembly for securing the drive system to the base 42 via the housing 40 is illustrated in a cross-sectional view. Here, the housing 40 is a one-piece construction.

[0048] Figure 3A first embodiment of a fastening assembly for securing the drive system to the base 42 via a housing 40 is illustrated in a side view. The housing 40 is constructed by axially cutting twice. A first section 60 forms the rotor-side end region of the housing 40, where a first rolling bearing 18 is disposed. A second section 62 forms the generator-side end region of the housing 40, where a second rolling bearing 38 is disposed. A third section 64 is axially disposed between the first and second sections, forming an intermediate section through which the first and second sections 60 and 62 are connected to each other. In the third section 64, the fastening assembly does not include a bearing for the rotor shaft 16. The third section 64 has a plurality of radially through openings 70 in its surrounding walls. The first and second sections 60 and 62 do not have radially through openings 70 in their surrounding walls. The first section 60 and the third section 64 abut against each other with their respective end faces as contact surfaces and are fastened thereto. The first segment 60 and the third segment 64 form the first pair of axially adjacent segments 60, 64 of the housing 40. The second segment 62 and the third segment 64 abut against each other with their end faces facing each other as contact surfaces and are fastened to each other there. The second segment 62 and the third segment 64 form the second pair of axially adjacent segments 64, 62 of the housing 40. These three segments 60, 62, and 64 are each integrally constructed.

[0049] The first segment 60 and the second segment 62 are fastened to the third segment 64 by fastening devices in the form of screws spaced apart from each other in the circumferential direction. Alternatively or additionally, locating pins are also provided between each pair of adjacent segments 60, 64; 64, 62 of the housing 40. If provided, these locating pins are arranged circumferentially between the fastening devices. In the example shown here, at least two locating pins are provided for each pair of adjacent segments of the housing 40. These locating pins and fastening devices are not shown in the cross-sectional views of these embodiments. Only through openings and blind holes are shown, in which these fastening devices are accommodated and alternatively or additionally, these locating pins are accommodated.

[0050] exist Figure 4The diagram shows further details of the second embodiment in cross-sectional view. In the connection with the first segment 60, the third segment 64 has a plurality of externally accessible through openings 100. In the connection with the third segment 64, the first segment 60 has a plurality of blind holes 102, which are aligned in pairs with the through openings 100. If screws are arranged in each blind hole 102 as fastening devices, the blind holes 102 have internal threads. Shoulders 104 are provided on both sides of the contact surface between the first segment 60 and the third segment 64, which center the first and third segments 60, 64 together. The shoulders 104 are arranged radially inward of the through openings 100 and the blind holes 102, and extend along the entire periphery.

[0051] In the connection with the second segment 62, the third segment 64 has a plurality of through openings 106 accessible from the inside. In the connection with the third segment 64, the second segment 62 has a plurality of blind holes 108, which are aligned in pairs with the through openings 106. If screws are arranged in each blind hole 108 as fastening devices, the blind holes 108 have internal threads. Shoulders 110 are provided on both sides of the contact surface between the second segment 62 and the third segment 64, which center the second and third segments 62, 64 to each other. The shoulders 110 are arranged radially inside the through openings 106 and blind holes 108 and extend along the entire periphery.

[0052] exist Figure 5 The diagram shows further details of the third embodiment in cross-section. The axial central region of the third segment 64 is not shown here. The connections between segments 60, 62, and 64 are designed differently.

[0053] In the connection with the third segment 64, the first segment 60 has a plurality of through openings 100 accessible from the inside. In the connection with the first segment 60, the third segment 64 has a plurality of blind holes 102, which are aligned in pairs with the through openings 100. Shoulders 104 are provided on both sides of the contact surface between the first segment 60 and the third segment 64, which center the first and third segments 60, 64 together. The shoulders 104 are arranged radially outside the through openings 100 and blind holes 102.

[0054] In the connection with the third segment 64, the second segment 62 has a plurality of externally accessible through openings 106. In the connection with the second segment 62, the third segment 64 has a plurality of blind holes 108, which are aligned in pairs with the through openings 106. Shoulders 110 are provided on both sides of the contact surface between the second segment 62 and the third segment 64, which center the second and third segments 62 and 64 together. The shoulders 110 are arranged radially inside the through openings 106 and the blind holes 108.

[0055] exist Figure 6 The diagram shows other details of the fourth embodiment in cross-sectional view. Here, the connections between these segments 60, 62, and 64 are also designed differently. The connection between the first segment 60 and the third segment 64 is designed the same as in the first embodiment. The connection between the second segment 62 and the third segment 64 is designed the same as in the second embodiment.

[0056] exist Figure 7 The fifth embodiment is shown in cross-sectional view. Here, the connections between these segments 60, 62, and 64 are also designed differently. The connection between the first segment 60 and the third segment 64 is designed the same as in the second embodiment. The connection between the second segment 62 and the third segment 64 is designed the same as in the first embodiment.

[0057] exist Figure 8 The sixth embodiment is shown in sectional view. Here, the connections between these segments 60, 62, and 64 are also designed differently. These connections are designed the same as in the fourth embodiment, but the shoulders 104 and 110 are omitted. Instead, these contact surfaces extend radially as flat end faces.

[0058] exist Figure 9 The seventh embodiment is shown in sectional view. Here, the connections between these segments 60, 62, and 64 are also designed differently. These connections are designed the same as in the fifth embodiment, but the shoulders 104 and 110 are omitted. Instead, the contact surfaces here extend radially as flat end faces.

[0059] exist Figure 10 Further details of the eighth embodiment are shown in a cross-sectional view. Here, as... Figure 5 Therefore, the axial central region of the third segment 64 is not shown. Here, the connection between these segments 60, 62, and 64 is also designed differently. These connection parts are designed the same as in the fifth embodiment, except that the shoulder 104 between the first segment 60 and the third segment 64 is omitted. Instead, the contact surface here extends purely radially as a flat end face.

[0060] exist Figure 11 Further details of the ninth embodiment are shown in a cross-sectional view. Here, as... Figure 5 Therefore, the axial central region of the third segment 64 is not shown. Here, the connection between these segments 60, 62, and 64 is also designed differently. These connection parts are designed the same as in the fifth embodiment, except that the shoulder 110 between the second segment 62 and the third segment 64 is omitted. Instead, the contact surface here extends purely radially as a flat end face.

[0061] exist Figure 12 The image shows a tenth embodiment of the fastening assembly, in which the housing 40 is divided axially only once. The division location is illustrated by line 90, thereby clarifying the connection between the first segment 60 and the second segment 62. This connection is located axially at the position that was previously the connection between the first segment 60 and the third segment 64 in a previous embodiment. The first segment 60 forms the rotor-side end region, and the second segment 62 forms the generator-side sub-region. These two segments 60 and 62 are integrally constructed. The third segment 64 is omitted and is now part of the second segment 62. Therefore, the second segment 62 now has a radially through opening 70 in its surrounding wall. The connection between the first segment 60 and the second segment 62 is designed the same as in one of the previous embodiments, as illustrated above line 90.

[0062] exist Figure 13 The eleventh embodiment of the fastening assembly is shown, in which the housing 40 is also divided only axially once. The division location is illustrated by line 90, thereby clarifying the connection between the first segment 60 and the second segment 62. This connection is located axially at the position that was previously the connection between the second segment 62 and the third segment 64 in the previous embodiment. The first segment 60 forms the end region on the rotor side, and the second segment 62 forms the sub-region on the generator side. These two segments 60 and 62 are integrally constructed. The third segment 64 is omitted and is now part of the first segment 60. Therefore, the first segment 60 now has a radially through opening 70 in its surrounding wall. The connection between the first segment 60 and the second segment 62 is designed the same as in one of the previous embodiments, as illustrated above line 90.

[0063] exist Figure 14 In the twelfth embodiment of the fastening assembly, it is shown that the orientation of the through openings 100, 106 and the blind holes 102, 108 is parallel or inclined to the rotor shaft 16. Correspondingly, the parallel or inclined extension of the fastening device is also derived. For illustrative purposes only, the connection between the first segment 60 and the third segment 64 is explained here for the parallel extension of the fastening device relative to the axis of rotation of the rotor shaft 16. Here, the respective longitudinal axes of the through openings 100 and the blind holes 102 are also parallel to the axis of rotation of the rotor shaft 16. For illustrative purposes only, the connection between the second segment 62 and the third segment 64 is explained here for the radially inclined extension of the fastening device relative to the axis of rotation of the rotor shaft 16. Here, the respective longitudinal axes of the through openings 106 and the blind holes 108 extend in the same plane as the axis of rotation of the rotor shaft 16, but are inclined to the axis of rotation. In other embodiments, the orientations of these two connections are interchanged, or the two connections are designed for the parallel or radially inclined orientation of the fastening device.

[0064] exist Figure 15The thirteenth embodiment of the fastening assembly is shown in cross-sectional view, wherein the housing 40 is further divided axially twice. Here, the connections between these segments 60, 62, and 64 are also designed differently. In the thirteenth embodiment, each segment 60, 62, and 64 has a flange 120 extending radially outward from the surrounding wall at these connections. In one embodiment, each flange 120 extends along the entire outer periphery. In other embodiments, the flange 120 extends only in the peripheral region of the fastening devices respectively disposed therein, and alternatively or additionally, in the peripheral region of the locating pins respectively disposed therein.

[0065] exist Figure 16 The image shows enlarged details of the joints between the three segments 60, 62, and 64. The joint between the first segment 60 and the third segment 64 is shown on the left, and the joint between the second segment 62 and the third segment 64 is shown on the right. Each flange 120 forms a mating surface for the end sides of adjacent segments 60, 62, and 64. At least one through-opening 122 is formed in each flange 120, extending parallel to or radially inclined to the rotor shaft 16 in a plane. Pairs of adjacent through-openings 122 are arranged coaxially or aligned. In one embodiment, screws are used as fastening devices, which are engaged with nuts on the outside. Alternatively, each of a pair of adjacent aligned through-openings 122 has an internal thread into which the screws serving as fastening devices are screwed. Shoulders 104 or 110 are formed radially inside the through-openings 122. In other embodiments, one or both of these shoulders 104, 110 are omitted. In yet another embodiment, for adjacent pairs of through openings 122, one of these through openings 122 is replaced with a blind hole 102, 108 with internal threads.

[0066] exist Figure 17 The image shows a fourteenth embodiment of the fastening assembly in cross-section, which is a variation of the thirteenth embodiment. In this fourteenth embodiment, the flange 120, identical to that in the thirteenth embodiment, is provided only at the connection between the first segment 60 and the third segment 64. The connection between the second segment 62 and the third segment 64 is designed similarly to... Figure 9 The seventh embodiment is the same. In other embodiments, the connection between the second segment 62 and the third segment 64 is designed to be the same as in one of the other embodiments having a housing 40 with two axial divisions and no flange 120.

[0067] exist Figure 18The image shows a cross-sectional view of the fifteenth embodiment of the fastening assembly, which is a variation of the thirteenth embodiment. In the fifteenth embodiment, the flange 120, identical to that in the thirteenth embodiment, is provided only at the connection between the second segment 62 and the third segment 64. The design of the connection between the first segment 60 and the third segment 64 is similar to that in the thirteenth embodiment. Figure 9 The seventh embodiment is the same. In other embodiments, the connection between the second segment 62 and the third segment 64 is designed to be the same as in one of the other embodiments having a housing 40 with two axial divisions and no flange 120.

[0068] exist Figures 19 to 22 The image shows different designs for the third segment 64, which are compatible with all embodiments of the two axial divisions of the housing 40. Figure 19 The design of the third segment 64 is shown, which has four radially through openings 70 on both sides along a horizontal extension adjacent to the rotor shaft 16. These radially through openings 70 are not uniform in design and have a basic triangular shape with rounded corners. Figure 20 The image shows a variant with four rectangular radial through openings 70, which extend axially between two joints with other segments 60, 62. Figure 21 The diagram illustrates a variant in which rectangular and slot-shaped radial through openings 70 extending in the circumferential direction are arranged side-by-side on both sides of the rotor shaft 16 along a horizontally extending direction, between two connection points with other sections 60, 62. The housing 40 is designed to be solid on both the upper and lower sides. Figure 22 The image shows a variation thereof, in which the through opening 70 extends obliquely with its longitudinal extension and thus extends not only in the circumferential direction but also in the axial direction.

[0069] In another embodiment of the housing 40 that is axially divided once, the radial through opening 70 in the first segment 60 or the second segment 62 is not designed to be aligned with... Figure 13 or Figure 12 It is not the same as in the past, but designed to be consistent with the present. Figures 20 to 22 The third section 64 is the same as one of the variant schemes.

[0070] Figure Labels

[0071] 10 Wind Power Facilities

[0072] 12 rotors

[0073] 14 hubs

[0074] 16 rotor shafts

[0075] 18 First Rolling Bearing

[0076] 20 cabins

[0077] 22 Transmission device

[0078] 24 generators

[0079] 26 brakes

[0080] 28 towers

[0081] 30 Power grid connection parts

[0082] 38 Second rolling bearing

[0083] 40 housing

[0084] 42-frame

[0085] Part 1 of 60

[0086] 62 Part Two

[0087] 64 Third Section

[0088] 70 radial through opening

[0089] 90 lines

[0090] 100, 106, 122 through openings

[0091] Blind holes 102 and 108

[0092] 104, 110 shoulder

[0093] 120 flange

Claims

1. A fastening assembly for securing a drive system to a wind power facility (10), wherein, The fastening assembly has a housing (40) in which at least one bearing for rotatably supporting the rotor shaft (16) of the wind power facility (10) is fastened, and the housing is configured for fastening to the nacelle (20) of the wind power facility (10), wherein the housing (40) is constructed in an axially divided manner at least once, and the housing (40) has a first section (60) and a second section (62) fastened to each other.

2. The fastening assembly according to claim 1, characterized in that, The drive system is held on the nacelle (20) of the wind power facility (10) only via the housing (40).

3. The fastening assembly according to claim 1 or 2, characterized in that, The housing (40) is constructed with at least two axially divided sections and the housing (40) is additionally constructed with a third section (64), the first section (60) being fastened to the second section (62) via the third section.

4. The fastening assembly according to claim 3, characterized in that, The third segment (64) has at least one radial through opening (70) in the wall surrounding it.

5. The fastening assembly according to any one of the preceding claims, characterized in that, At least one of the sections (60, 62, 64) is an integral structure.

6. The fastening assembly according to any one of the preceding claims, characterized in that, Locating pins are provided between at least two axially adjacent sections in each section (60, 62, 64).

7. The fastening assembly according to any one of the preceding claims, characterized in that, Two axially adjacent segments in each segment (60, 62, 64) form corresponding contact sides, the contact sides having shoulders (104, 110) for the two adjacent segments (60, 64; 64, 62) to be aligned with each other.

8. The fastening assembly according to any one of the preceding claims, characterized in that, At least one of the segments (60, 62, 64) is provided with a radially projecting flange (120), and adjacent segments (60, 62, 64) are fastened to the flange.

9. The fastening assembly according to any one of the preceding claims, characterized in that, Two axially adjacent sections in each section (60, 62, 64) are fastened to each other by corresponding fastening devices.

10. The fastening assembly according to claim 9, characterized in that, The fastening device extends parallel to the rotor shaft (16).

11. The fastening assembly according to claim 9, characterized in that, The fastening device extends radially inward or radially outward relative to the rotor shaft (16).

12. The fastening assembly according to any one of claims 9 to 11, characterized in that, The fastening device can be arranged on the housing (40) from the inside or outside.

13. A wind power facility (10) having a fastening assembly according to any one of the preceding claims.

Images