Planet carrier, planetary gear set and wind power plant

Abstract

The invention relates to a planet carrier, a planetary gear set and a wind power installation. The planet carrier has a first wall element (20), a second wall element (22) and planet pegs (12). The planet pegs (12) are configured for rotatably supporting planet wheels (14) thereon. The wall elements (20, 22) are fastened to one another with at least one clamping device (30). The planet pegs (12) are clamped between the two wall elements (20, 22) by the clamping device (30). Furthermore, the invention also relates to a planetary gear set for a transmission, wherein the planetary gear set has at least one such planet carrier (10). Furthermore, the invention also relates to a wind power installation (110).

Description

Technical Field

[0001] This invention relates to a planetary carrier. Furthermore, this invention also relates to a planetary gear set and a wind power generation facility. Background Technology

[0002] The planet carrier typically forms one of the rotating elements in a planetary gear set of a transmission. Multiple planet gears are rotatably supported on the planet carrier, these gears meshing with, for example, the sun gear and the ring gear. The torque transmitted there can cause the planet carrier to bear high loads, which it must be able to withstand without excessive deformation. Excessive deformation can lead to misalignment of the gears, resulting in accelerated wear. However, the planet carrier should also be lightweight, easy to install, and inexpensive to manufacture. Summary of the Invention

[0003] The first aspect relates to a planet carrier for a planetary gear set. The planetary gear set can, for example, form part of a transmission. The transmission can, for example, be configured as a vehicle transmission or a transmission for a power generation facility (such as a wind power generation facility).

[0004] The planetary carrier has a first wall element, a second wall element, and planetary pins. The planetary pins can be held on both wall elements. The two wall elements can be arranged axially side-by-side. The axial, radial, and circumferential directions can be defined by the axis of rotation of the planetary carrier or the entire planetary gear set.

[0005] The two wall elements can extend substantially radially, for example. The first wall element can, for example, form the connection area for an input shaft, a rotor of a wind turbine, or another planetary gear set. The second wall element can form the connection area for an output shaft, a generator of a wind turbine, or another planetary gear set. The two wall elements can, for example, be constructed as castings or forgings. The two wall elements can also be constructed as metal sheets, for example, produced by stamping and alternatively or additional deep drawing methods. The design described herein allows the two wall elements to withstand sufficiently high loads while maintaining a relatively light weight, without unacceptably high deformation. Furthermore, this manufacturing method can therefore be cost-effective. The two wall elements can be post-processed by cutting methods. The two wall elements can be spaced apart from each other and, alternatively or additionally, substantially parallel to each other, for example, at least on opposite sides. The two wall elements, for example, do not contact each other. The first and second wall elements can be integrally constructed. The two wall elements can be two separate components. The wall elements can also be constructed in multiple parts, for example, to provide reinforcement in the connection area and, alternatively or additionally, adapters can be used for different transmission devices.

[0006] Planetary bolts are constructed to rotatably support planetary gears. For example, the planetary gears can be supported on the planetary bolts using sliding or rolling bearings. Planetary bolts can be separate components from the two wall elements. A multi-piece design allows for easy installation of the planetary bolts, as well as the entire planet carrier and planetary gear set. Planetary bolts can extend axially in their primary direction of extension, for example, radially spaced from the axis of rotation of the planet carrier. Planetary bolts can be metallic components. The planet carrier can have two, three, four, or more planetary bolts. Planetary bolts can be spaced apart from each other. Planetary bolts can be identical in design and installation. The following corresponding explanation also applies, if appropriate, to multiple planetary bolts. For example, each planetary bolt may have at least one or exactly one mating planetary gear rotatably supported.

[0007] Each planetary gear may have one or more toothed regions on its outer circumference. A planetary gear set may, for example, be configured as a negative planetary gear set or a positive planetary gear set. The planetary gears may, for example, mesh with the sun gear and ring gear of the planetary gear set. A planetary gear set may, for example, have three rotating elements. The sun gear, ring gear, and planet carrier may, for example, constitute the rotating elements of the planetary gear set.

[0008] The wall elements are fastened together using a clamping device, wherein the planetary bolt is clamped between the two wall elements while they are fastened together. The planetary bolt extends axially, for example, between the two wall elements. The planet carrier can be configured to allow the planetary bolt to absorb part of the force acting on the planet carrier. By clamping, for example, the tangential force that causes torsional deformation of the planet carrier can be transmitted between the two wall elements. The planetary bolt can additionally reinforce the planet carrier, for example, due to its clamping. Conversely, in the case where the planet carrier has a one-piece wall forming a cage for the corresponding planet gear, the force is transmitted entirely or at least mostly through the wall. Therefore, the planetary bolt contributes little or no to the stiffness of such a planet carrier, and thus the wall or cage must be constructed to be more robust. By designing the planet carrier wall to have at least two wall elements in a two-piece configuration, other installation possibilities are also obtained, such as stacking, which simplifies installation.

[0009] The clamping device may include, for example, clamping elements such as screws or bolts. Additionally, the clamping device may also have locking elements such as nuts or threaded plates. The clamping elements may extend through two or only one of the two wall elements. For example, a screw may be arranged in a through-opening of the first wall element and screwed into a threaded hole in the second wall element. For example, one clamping element may extend through the first wall element and screwed into a threaded hole in the planetary bolt. Another clamping element may extend through the second wall element and screwed into another threaded hole in the planetary bolt. The clamping device may have a clamping lever for each clamping element. The clamping of the planetary bolt can then be performed, for example, by turning the lever instead of tightening. For example, a screw may be arranged in a through-opening of the first and second wall elements and screwed into a threaded hole in the locking element. The clamping device may also have multiple clamping elements spaced apart from each other. The clamping elements may be arranged, for example, corresponding to the respective planetary bolts, and may be arranged alternately or additionally with the bridging elements described below.

[0010] In one embodiment, the planetary pin is configured as a hollow pin. For example, the planetary pin can be configured as a tube. The planetary pin can have thin, circumferential walls. The planetary pin can have an axially extending through-hole. The through-hole can be located centrally. The planetary pin can also have multiple axially extending through-holes. The planetary pin can therefore be very lightweight. Nevertheless, the planetary pin can still have a high moment of inertia and thus can absorb and transmit higher forces in the circumferential direction between the two wall elements. The planetary pin can have a through-hole for a clamping element, and additionally can also have one or more through-holes without a clamping element. Alternatively, the planetary pin can be configured not as a hollow pin but as a solid pin without a through-hole.

[0011] In one embodiment, the clamping element of the clamping device is arranged within the planetary pin. For example, the clamping element extends axially through the planetary pin. The wall of the planetary pin radially surrounds the clamping element. For example, the clamping element is arranged in a through-hole in a hollow pin, or in a separate dedicated through-hole in the wall of the planetary pin. This arrangement allows the planetary carrier to be particularly compact. Furthermore, the planetary pin can be clamped particularly evenly as a result. Additionally, the clamping element prevents the planetary pin from falling off before it is securely clamped into its mounting position. The wall of the planetary pin may radially surround the clamping element. For example, multiple clamping elements may be arranged within the planetary pin. The clamping elements may be spaced apart from each other. It is also possible that some clamping elements are arranged within the planetary pin, and some clamping elements are arranged outside the respective planetary pin.

[0012] In one embodiment, the planetary carrier has a sleeve disposed within the planetary pin. The sleeve can be constructed as a hollow pin with a smaller diameter than the planetary pin. However, the sleeve can also be solid, for example, constructed as a pin. No planetary gears, for example, are supported on the sleeve. In other respects, the sleeve can be constructed like the planetary pin and can be alternatively or additionally fastened. For example, the sleeve can extend axially between two wall elements and be clamped there. The sleeve can additionally transmit force between the two wall elements as a planetary pin, and thus strengthen the planetary carrier. One or more clamping elements can be disposed between the sleeve and the planetary pin. One or more clamping elements can also be disposed within the sleeve. For example, the sleeve can guide the clamping elements during installation, for example, guiding the clamping elements at least between the sleeve and the planetary pin or guiding the clamping elements within the sleeve. This simplifies the installation of the planetary carrier.

[0013] In one embodiment, the planet carrier is configured with an oil guide leading to the support portion of the planet gear on the planetary pin. At least a portion of the oil guide is formed by the planetary pin. For example, a planetary pin configured as a hollow pin can form a first axial oil passage of the oil guide using its through opening. Furthermore, the planetary pin can also be configured with one or more radial through openings leading to the bearing area of ​​the associated planet gear. There, oil can flow to the support portion of the planet gear, for example, assisted by centrifugal force. The oil guide further facilitates lubrication, for example, directly at the support portion of the planet gear on the planetary pin, thereby requiring less oil and making lubrication particularly reliable. For oil supply, the transmission or planetary gear set can have an oil guiding element, such as a radial disc, having an oil guide axially toward one of the two wall elements. This oil guiding element can be axially arranged near one of the two wall elements. For example, at least one of the two wall elements can have a through opening leading to the planetary pin, extending from a side away from the other wall element to a side toward that other wall element.

[0014] The oil passage of the oil guide can be constructed between the planetary pin and the sleeve. This oil passage is configured for active lubrication of the planetary gear support. For example, active lubrication can be supplied by generating pressure via a pump or other means without forcibly rotating the planetary carrier. The oil passage can be substantially closed and pressurized.

[0015] In one embodiment, an oil reservoir for passive lubrication is constructed within the sleeve. This oil reservoir can be supplied, for example, through an additional through-opening of one of the aforementioned oil channels or wall elements. The oil reservoir is formed, for example, by the internal space of the sleeve and is at least partially axially limited by the wall elements. The oil reservoir can be connected to the support of the planetary gears through the aforementioned oil channels or additional radial through-openings for lubricating the support. Passive lubrication can be caused by the rotation of the planetary carrier and the corresponding centrifugal force. Passive lubrication can function, for example, in the event of active lubrication failure and can alternatively or additionally ensure emergency lubrication. Thus, a basic supply to the support can be ensured, for example, until operation is stopped or maintenance is required. Especially in the case of equipment requiring extensive maintenance (such as wind power facilities), operation can be maintained or at least damage requiring repair can be avoided. Based on the size of the planetary gears in the wind power facility, the oil reservoir in the sleeve can be easily made of sufficient size for this purpose.

[0016] In one embodiment, the planetary bolt is configured as a two-piece unit. For example, the planetary bolts are held together only by clamping. The planetary bolt may be, for example, axially divided. For instance, the first part may only contact the first of the two wall elements, and the second part may only contact the second of the two wall elements. The two parts may have steps, recesses, retractions, or other bearing surfaces at their contact points. The two-piece configuration simplifies installation. Alternatively, however, the planetary bolt may be configured as a single piece.

[0017] In one embodiment, a first wall element is configured with a first bearing, on which a planetary bolt is disposed. Alternatively or additionally, a second wall element is configured with a second bearing, on which a planetary bolt is disposed. The corresponding bearing improves force transmission on the planetary bolt. Furthermore, the corresponding bearing improves the centering of the planetary bolt and simplifies installation. The bearing may, for example, be formed by protruding areas and alternative or additional recesses. These areas may, for example, be axially protruding or axially recessed. The planetary bolt may have a corresponding area where the bearing is embedded.

[0018] In one embodiment, the corresponding bearing is configured as a recess on the side of the corresponding wall element facing the planetary pin. This side may also face the planet gear, or alternatively or additionally, face another wall element. For example, the recess may be configured as a circumferential groove. For example, the recess may correspond in shape to the cross-sectional shape of the planetary pin. For example, the bearing may be formed by an annular recess corresponding to the circular cross-section of a cylindrical planetary pin configured as a hollow pin. Alternatively or additionally, the wall element may also have a protruding area constituting the bearing. For example, a protruding ring may be embedded in a through opening in the center of the planetary pin.

[0019] In one embodiment, the corresponding bearing tapers gradually away from the planetary pin. For example, the bearing may taper axially away from the planetary pin, or narrow in other ways. The bottom of the groove forming the bearing may be narrower than the opening on its upper side. By gradually tapering, the planetary pin can also be compressed in the circumferential direction when clamped. Therefore, tangential forces can be transmitted particularly well. Furthermore, by gradually tapering, the planetary pin can be additionally centered when clamped.

[0020] In one embodiment, the planetary carrier has a bridging element that is clamped between the two wall elements by a clamping device when the wall elements are fastened together. The bridging element may be arranged radially outward relative to the planetary bolt. The bridging element forms an additional reinforcement of the planetary carrier between the two wall elements. The bridging element may be, for example, a metallic component, such as a casting or forging. The bridging element may be a separate component from the two wall elements. Instead of a bridging element, a bridging section may be integrally formed on one of the two wall elements, although not a separate component, but this bridging section may then be designed similarly to the bridging element and is also referred to hereinafter as a bridging element. The bridging element may, for example, have one or more through openings through which corresponding clamping elements of the clamping device extend. The bridging element may, for example, extend axially between the two wall elements or at least between the two sides of the wall elements facing the planetary bolt. The bridging element may be fastened to the two wall elements, for example, by an associated bearing, like the planetary bolt. By arranging the bridging elements radially outward relative to one or more planetary pins, the torsional stiffness of the planet carrier can be significantly improved. For example, multiple bridging elements can also be provided. If appropriate, an implementation for one bridging element is equally applicable to all bridging elements.

[0021] In one embodiment, the bridging element is arranged circumferentially spaced from the planetary pins. For example, the bridging element can be arranged circumferentially between two planetary pins. This allows for more space on the planetary gears and avoids structural space conflicts with the tooth area.

[0022] In one embodiment, a locating pin is arranged at least between the first wall element and the bridging element. Alternatively or additionally, a locating pin may be arranged at least between the second wall element and the bridging element. Multiple locating pins may also be arranged separately. The respective locating pins allow for a simple improvement in force transmission between the bridging element and the corresponding wall element, thus reinforcing the planetary carrier.

[0023] In one embodiment, the planetary carrier has at least two planetary pins spaced apart from each other in the circumferential direction. A first wall element may have a recess in the circumferential region between the two planetary pins. Alternatively or additionally, a second wall element may have a recess in the circumferential region between the two planetary pins. This recess may be provided for each pair of planetary pins adjacent in the circumferential direction. The recess may, for example, be constructed as an arch. In the case of three planetary pins, the wall elements may also have a substantially triangular shape due to the recesses. The recesses allow the planetary carrier to be lighter and require less material, without sacrificing or barely sacrificing operational stiffness.

[0024] The second aspect relates to a planetary gear set for a transmission device. The planetary gear set may have a planet carrier according to the first aspect. Corresponding advantages and additional features are known from the description of the first aspect, wherein the design of the first aspect also forms the design of the second aspect, and vice versa. The planetary gear set may, for example, also have at least one sun gear, and alternatively or additionally at least one ring gear. The planetary gear set may provide each planetary pin of the planet carrier with a planetary gear rotatably supported on the planetary pin. The planetary gear set may, for example, form part of the transmission device of a wind power generation facility or a vehicle.

[0025] The third aspect relates to a wind power generation facility. The wind power generation facility has a planetary gear set according to the second aspect. Alternatively or additionally, the wind power generation facility may have a planetary carrier according to the first aspect. Corresponding advantages and additional features are known from the descriptions of the first and second aspects, wherein the design of the first or second aspect also forms the design of the third aspect, and vice versa. The wind power generation facility may have a tower and a nacelle arranged on the tower. The nacelle may be supported on the tower, for example, in a rotatable manner or resisting relative rotation. The wind power generation facility may, for example, have a rotor and a generator. The rotor may drive the generator via a transmission to generate electrical energy. The rotor is connected to the transmission, for example, via a rotor shaft. The rotor may have a horizontal or vertical axis of rotation. The rotor may, for example, have two, three, four, or more rotor blades, which are connected to the rotor shaft via hubs. Attached Figure Description

[0026] Figure 1 A planetary carrier with two wall elements, which are integrally formed, is illustrated in a schematic perspective view.

[0027] Figure 2 An exploded view of a first embodiment of a planetary carrier with two separate wall elements is shown in schematic perspective view.

[0028] Figure 3 The diagram is presented in the form of a schematic perspective view. Figure 2 Planetary support;

[0029] Figure 4 The second embodiment of the planetary carrier is shown in a schematic perspective view;

[0030] Figure 5 The first variation of the method of fastening the planetary bolts to the two separate wall elements on the planet carrier is shown in schematic cross-sectional view.

[0031] Figure 6 A second variation of the method of fastening the planetary bolts to the two separate wall elements on the planet carrier is shown in schematic cross-sectional view;

[0032] Figure 7 A third variation of the method of fastening the planetary bolts on two separate wall elements of the planet carrier is shown in schematic cross-sectional view.

[0033] Figure 8 A first variant of the oil guide for lubricating the support of the planetary gear on the planetary pin is shown in schematic cross-sectional view;

[0034] Figure 9 A second variant of the oil guide for lubricating the support portion of the planetary gear on the planetary pin is schematically shown in sectional view;

[0035] Figure 10 A third variation of the method of fastening the planetary bolts to the two separate wall elements of the planet carrier is shown schematically in sectional view;

[0036] Figure 11 A fourth variation of the method of fastening the planetary bolts to the two separate wall elements of the planet carrier is shown in schematic cross-sectional view.

[0037] Figure 12 The first variation of the arrangement of the clamping elements of the clamping device is shown in schematic cross-sectional view, in which the two independent wall elements of the planetary carrier are fastened together.

[0038] Figure 13 A second variation of the arrangement of the clamping elements of the clamping device is shown in schematic cross-sectional view, in which the two independent wall elements of the planetary carrier are fastened together.

[0039] Figure 14 A third variation of the arrangement of the clamping elements of the clamping device is shown in schematic cross-sectional view, in which the two independent wall elements of the planetary carrier are fastened together.

[0040] Figure 15A fourth variation of the arrangement of the clamping elements of the clamping device is shown in schematic cross-sectional view, in which the two independent wall elements of the planetary carrier are fastened together.

[0041] Figure 16 A fifth variation of the arrangement of the clamping elements of the clamping device is shown in schematic cross-sectional view, in which the two independent wall elements of the planetary carrier are fastened together.

[0042] Figure 17 A sixth variation of the arrangement of the clamping elements of the clamping device is shown in schematic cross-sectional view, in which the two independent wall elements of the planetary carrier are fastened together.

[0043] Figure 18 A seventh variation of the arrangement of the clamping elements of the clamping device is shown in schematic cross-sectional view, in which the two independent wall elements of the planetary carrier are fastened together.

[0044] Figure 19 The first variant, shown schematically in the form of a planetary carrier unfolded diagram, illustrates how two separate wall elements are fastened together by means of a clamping device;

[0045] Figure 20 A second variant, shown schematically in the form of a planetary carrier unfolded diagram, illustrates how two separate wall elements are fastened together by means of a clamping device;

[0046] Figure 21 A third variant is schematically shown in the form of a planetary carrier unfolded diagram, in which two separate wall elements are fastened together by means of a clamping device;

[0047] Figure 22 A fourth variant is schematically shown in the form of a planetary carrier unfolded diagram, in which two separate wall elements are fastened together by means of a clamping device;

[0048] Figure 23 The diagram illustrates a wind power generation facility. Detailed Implementation

[0049] Figure 1A conventional planetary carrier 500 is shown in a schematic perspective view. The planetary carrier 500 has axially opposed wall elements 502 and 504, which are integrally formed. Extending radially outward between the two wall elements 502 and 504 are radially outward bridging elements 506, which are integrally formed with the wall elements 502 and 504. Multiple planetary gears 508 are rotatably supported on the planetary carrier 500; for clarity, only one is shown here. For this purpose, the planetary carrier 500 provides each planetary gear 508 with a planetary bolt 510. During installation, the planetary bolt 510, together with the already pushed-in mating planetary gear 508, is inserted radially outward between the two wall elements 502 and 504. Then, in its final positioning, the planetary bolt 510 is fastened on both sides, i.e., fastened to the two wall elements 502 and 504. In the example shown, for this purpose, the end side of the planetary bolt 510 is screwed to the corresponding wall elements 502, 504, and in one embodiment, an additional end plate is used at each end. The planet carrier 500 forms a cage for the planetary gears 508 and the planetary bolt 510.

[0050] Figure 2 and Figure 3 A planetary carrier 10 is shown, with a multi-piece wall construction. From Figure 2 As can be clearly seen, the planetary carrier 10 has a first wall element 20 and a second wall element 22, which are constructed as separate components. In the example shown here, the planetary carrier 10 is part of the transmission mechanism of a wind power generation facility. The planetary carrier 10 has a central through opening that is coaxial with the axis of rotation of the planetary carrier 10, and the shaft of the transmission mechanism can be guided through this through opening.

[0051] A plurality of planetary pins 12 extend axially between the two wall elements 20, 22. These planetary pins are constructed as tubular pins with a central through-hole. A planetary gear 14 is rotatably supported on each planetary pin 12. The two wall elements 20, 22 are fastened together by a clamping device. The clamping device here presses the wall elements 20, 22 against each other. The planetary pins 12 are clamped between the two wall elements 20, 22. The planetary pins 12 hold the two wall elements 20, 22 at a desired spacing and transmit forces circumferentially between the two wall elements 20, 22 during wind power generation. Furthermore, as... Figure 2 and Figure 3As shown, in some embodiments, a bridging element 16 is additionally clamped between the two wall elements 20, 22. The bridging element 16 also extends axially between the two wall elements 20, 22 and is arranged radially outward relative to the two wall elements 20, 22. The bridging element 16 also serves to maintain the spacing and transmit force between the two wall elements 20, 22. The bridging element 16 is arranged radially outward relative to the planetary pins 12 and is located between two adjacent planetary pins 12 in the circumferential direction. Figure 2 and Figure 3 In the example shown, the bridging element 16 is constructed as a separate component. The planet carrier 10, together with the two wall elements 20, 22 and the bridging element 16, forms a cage for the planet gear 14 and the planet bolt 12.

[0052] exist Figure 2 and Figure 3 In the first embodiment of the planetary carrier 10 shown, the clamping device has a plurality of clamping elements 30. Four through openings are provided on the wall of the through opening at the center of the clearance of the planetary bolt 12, and screws or bolts are arranged in each of these through openings as clamping elements 30. Furthermore, the bridging element 16 has through openings at each end region in the circumferential direction, and screws or bolts as clamping elements 30 are arranged in these through openings. At least on one of the two wall elements 20, 22, on the outer side opposite to the planetary bolt 12, a locking element 32, here configured as a nut, is provided for each clamping element 30. The clamping element 30 extends through the corresponding through opening of the wall element 20, 22 so as to also be guided through the locking element 32. Therefore, depending on the design, the clamping elements 30 can be tightened from both sides or one side of the planetary carrier 10 to clamp the planetary bolt 12 and the bridging element 16, and to install the planetary carrier 10. A stacked assembly method is also possible here. In one mounting variant, one of the two wall elements 20, 22 is laid flat with its end side facing out. Different components, along with the planetary gear 14, are then stacked sequentially onto the corresponding wall elements of the two wall elements 20, 22. This mounting method is therefore greatly simplified, especially for the very large and heavy planet carrier 10.

[0053] In addition Figure 2 As can be clearly seen, the first wall element 20 has a bearing 40 for each planetary pin 12 on the side facing the second wall element 22 and also towards the planetary gear 14 and planetary pin 12. The bearing 40 is constructed as a circular recess, or groove, corresponding to the shape of the wall portion of the planetary pin 12. The planetary pin 12 can be inserted here and then regionally abutted against the first wall element 20 at its outer and inner circumferences. Thus, forces can be effectively transmitted in both the circumferential and radial directions. In one embodiment, the second wall element 22 has a corresponding bearing 40, but this bearing... Figure 2It cannot be seen in the middle.

[0054] In addition, Figure 3 As can be seen, at least the second wall element 22 has a recess 42 in the circumferential direction between two adjacent planetary bolts 12, which extends in the region of the bridging element 16. Therefore, the second wall element 22 is not as... Figure 1 The second wall element 504 of the planet carrier 500 is constructed as a plate with a substantially continuous circular basic shape in the circumferential direction. The first wall element 20 is constructed as a continuous plate without recesses. In a variant, the first wall element may also have a recess 42.

[0055] Figure 4 A second embodiment of the planetary carrier 10 is shown. Only descriptions based on... Figure 2 and Figure 3 The difference from the first embodiment is that the planet carrier 10 now has only three planetary pins 12 instead of four. The bridging element 16 is eliminated. Now, in both wall elements 20, 22, recesses are provided in the circumferential direction between adjacent planetary pins 12, thereby obtaining the basic triangular shape of the two wall elements 20, 22. The planetary pins 12 extend to the radial edges of the two wall elements 20, 22. The planetary pins 12 are shown in cross-section. It can be seen that the clamping elements 30 are no longer arranged in the corresponding through openings in the wall portion of the planetary pins 12. Instead, each planetary pin 12 has four spaced-apart clamping elements 30 arranged within a through opening in the center of the respective planetary pin 12. Furthermore, in the second embodiment, the planet carrier 10 is shown from one side, on which the clamping elements 30 rest with their heads against the second wall element 22.

[0056] Furthermore, a second embodiment of the planetary carrier 10 provides each planetary pin 12 with a sleeve 50 disposed within the planetary pin 12. In one variant, the sleeve 50 is constructed as a solid pin, while in another variant it is constructed as a hollow pin shaft. The sleeve 50 serves as a spacer element during installation. In one embodiment, a bearing is provided in each of the two wall elements 20, 22 for the sleeve 50, which is constructed similarly to the bearing 40 of the planetary pin 12. The sleeve 50 is then clamped and transmits force in the same manner, thereby additionally reinforcing the planetary carrier 10. In one variant, the sleeve 50 is integrally formed with one of the two wall elements 20, 22, while in another variant, the sleeve 50 is constructed as a separate component.

[0057] Figure 5Details of the fastening method of the planetary bolt 12 to the two wall elements 20, 22 are shown, as well as other details of the planetary gear set with planet carrier 10. The sun gear 70 of another planetary gear set is connected to the first wall element 20 via teeth. The second wall element 22 is supported by a rolling bearing 72. The planetary gear 14 is supported on the planetary bolt 12 via a sliding bearing 74. An oil passage 76 for lubricating the sliding bearing 74 is constructed in the wall of the planetary bolt 12. The locking element 32 is constructed as a plate, its end side abutting against the side of the first wall element 20 opposite to the planetary gear 14. Furthermore, the locking element 32 also has an axial protrusion that extends into the planetary bolt 12 in the region of the first wall element 20. The first wall element 20 has a through opening into which the planetary bolt 12 abuts with its end region. Furthermore, the planetary bolt 12 has a step constructed in this end region, so that the planetary bolt 12 also abuts end-side against the side of the first wall element 12 facing the planetary gear 14. The second wall element 22 has a protrusion that extends into the planetary bolt 12 at an adjacent end region. Therefore, both wall elements 20 and 22 are constructed with a bearing for the planetary bolt 12, which defines the mounting position and also enables force transmission in the circumferential direction. The second wall element 22 has a central through-opening through which a screw-type clamping element 30 extends. The locking element 32 has a central threaded hole to which the clamping element 30 is screwed.

[0058] Figure 6 It shows Figure 5 Modified design. Only the differences are explained. Now, each planetary bolt 30 is provided with multiple clamping elements 30. The locking element 32 is no longer constructed as a plate, but as a simple locking nut. Currently, the locking element 32 is arranged on the outside of the first wall element 20. In another variation, the locking element 32 is also arranged on the outside of the second wall element 22. In yet another variation, the clamping element 30 has threads on both sides, and each clamping element 30 uses two locking elements 32.

[0059] Furthermore, in the two wall elements 20, 22, the bearing 40 is configured in a different manner. A circular recess without a central, unrecessed portion is now provided. In each of the wall elements 20, 22, the recess gradually tapers axially away from the planetary gear 14 and further away from the other wall element of the two wall elements 22, 20. The insertion end region of the planetary bolt 12 tapers accordingly. When the planetary bolt 12 is clamped, the end region is radially compressed from the outside in the corresponding bearing 40, thereby improving force transmission and centering.

[0060] Figure 7 It shows Figure 6Modified design. Only the differences are explained. For clarity, the clamping element 30 is not shown in the schematic diagram. This variant now again has a sleeve 50. The sleeve 50 is constructed as a hollow pin. The planetary carrier 10 is constructed with oil guides leading to the supports of the planetary gears 14 on each planetary pin 12. An oil guide 80 is radially constructed between the sleeve 50 and the planetary pins 12, which is connected to the sliding bearings 74 of the planetary gears 14 through a radial through-opening 82 for lubricating the sliding bearings. The oil guide 80 can also be supplied with oil through an axial through-opening 84 in the first wall element 20. An oil distribution ring 86 is arranged axially adjacent to the first wall element 20, thereby fluidly connecting the oil guide 80 to a pressure supply for actively lubricating the sliding bearings 74. An oil reservoir 88 is also constructed within the sleeve 50. This oil reservoir 88 is passively or actively supplied with oil through an axial through-opening 90 in the second wall element 22. The oil reservoir 88 is not necessarily pressurized. The oil reservoir 88 is also connected to the corresponding sliding bearing 74 via a radial channel 92 that extends through radial through-openings in the sleeve 50 and planetary bolt 12 for lubricating the sliding bearing. The oil reservoir 88 passively lubricates the corresponding sliding bearing 74 by centrifugal force as the planetary carrier 10 rotates, and thus even in the event of active lubrication failure. Figure 9 The design of the oil guide is shown again in another sectional view.

[0061] In addition, Figure 7 In the design, the bearing 40 for the planetary pin 12 in each of the two wall elements 20, 22 is configured in a different manner. The bearing 40 is now again formed by an annular recess. This annular recess gradually tapers away from the planetary gear set 14 in the axial direction, which is consistent with... Figure 6 The bearing 40 is similar. The wall of the planetary bolt 12 also tapers gradually in each end region. Therefore, the planetary bolt 12 can be well pressed into the corresponding bearing 40.

[0062] Figure 8 A variant of the oil guide without sleeve 50 is shown. The oil guide for lubricating the sliding bearing 74 is now simply constructed through a central through opening in the planetary bolt 12.

[0063] Figure 10 The diagram shows another variation of the mutual fastening method of the two wall elements 20, 22, which is based on Figure 7 The design is described. Only the differences are explained. The oil guide is omitted in the variant shown, but may be present in other variants. Sleeve 50 is constructed as a solid pin, which is consistent with the design of... Figure 2The design is the same. The clamping element 30 is screwed into the first wall element 20, and its head rests against the outside of the second wall element 22. The locking element 32 is eliminated. The clamping element 30 is arranged radially between the sleeve 50 and the planetary bolt 12.

[0064] Figure 11 It shows the basis Figure 10 Another variation of the design. Only the differences are explained. The planetary bolt 12 is here constructed in two pieces. Furthermore, instead of the sliding bearing 74, a rolling bearing 78 is now provided to support the planetary gear 14 on the planetary bolt 12. For example, the axial support of the planetary gear 14 on the two wall elements 20, 22 is eliminated by the rolling bearing or sliding bearing. Instead, the rolling bearing 78 axially guides the planetary gear 14, wherein the inner ring of the rolling bearing 78 is supported on the shoulder of the planetary bolt 12. The first portion of the planetary bolt 12 is arranged in a seat 40 on the first wall element 20 and has a recess at the opposite axial end region. The second portion of the planetary bolt 12 abuts against the corresponding recess and is arranged in a seat 40 on the second wall element 22. The division of the planetary bolt 12 is here axially centered. In other embodiments, the division is not axially centered.

[0065] Figures 12 to 18 Different arrangements of the clamping element 30 relative to the planetary bolt 12 are shown. Figure 12 In the variant, each planetary bolt 30 is provided with a clamping element 30 centrally arranged in the through opening of the planetary bolt 12. Figure 13 In the variant, each planetary bolt 30 has four evenly spaced clamping elements 30 arranged in a common radius within the through opening of the planetary bolt 12. Figure 14 In the variant, each planetary bolt 30 has six, instead of four, evenly spaced clamping elements 30 arranged in the through opening 12 of the planetary bolt 12 on a common radius. Figure 15 Additionally, the positioning of the bridging element 16 relative to the radially outer side of the planetary bolt 12 is shown, while other aspects are similar to... Figure 14 Same. Figure 16 Among the variants, such as Figure 2 As shown, four clamping elements 30 are arranged in the corresponding through opening in the wall of the planetary bolt 12. Figure 17 In this variant, four clamping elements 30 are arranged at uneven intervals within the planetary bolt 12. Figure 18 In the variant, four clamping elements 30 are arranged radially between the sleeve 50, which is constructed as a hollow pin, and the planetary bolt 12, and are evenly spaced from each other.

[0066] Figures 19 to 22 The different fastening configurations for the bridging element 16 and the planetary bolt 12 are shown in the form of unfolded diagrams.

[0067] exist Figure 19 In the variant, the clamping element 30 is inserted unilaterally through the second wall element 22 in the planetary bolt 12 region during installation and screwed into the corresponding threaded hole of the first wall element 20. The bridging element 16 is clamped in a similar manner at each end region along the circumferential direction by the clamping element 30.

[0068] exist Figure 20 In the variant, additionally, locating pins 100 are provided, which are inserted into corresponding blind holes of the bridging element 16 and one of the two wall elements 20, 22.

[0069] exist Figure 21 In this variant, the bridging element 16 is now axially screwed from both sides by clamping elements 30. The clamping elements 30 in the region of the bridging element 16 are respectively guided through corresponding through openings in one of the two wall elements 20, 22 and screwed into threaded holes in the bridging element 16.

[0070] exist Figure 22 In this variant, the bridging element 16 is integrally constructed as part of the first wall element 20, instead of being a separate component. The bridging element 16 is then screwed onto the second wall element 22 by clamping elements 30. The clamping elements 30 in the region of the bridging element 16 are respectively arranged in through openings in the second wall element 22 and screwed onto the bridging element 16 in threaded holes. Furthermore, now only on one side of the second wall element 22, two locating pins 100 are provided between the bridging element 16 and the second wall element 22 for each bridging element 16.

[0071] Additionally, Figure 22 The sleeve 50 is also shown in the planetary bolt 12. This demonstrates that, in Figures 19 to 22 In all variations, sleeve 50 can also be arranged within each planetary bolt 12. Figures 19 to 22 In the variant, the planetary pin 12 is constructed as a hollow pin, rather than a solid pin, as shown.

[0072] Figure 23 A wind power generation facility 210 with a transmission device 222 is shown, in which the planetary carrier 10 is based on a reference. Figures 1 to 22Each of the described embodiments is arranged as part of a planetary gear set. The wind power generation facility 210 has a rotor 212, which is held on a rotor shaft 216 via a hub 214. The axis of rotation of the rotor shaft 216 extends substantially horizontally. The rotor shaft 216 is held in a nacelle 220 via two rolling bearings 218. For this purpose, a housing is provided, which is secured to a machine bed frame of the nacelle 220. The rotor shaft 216 is mechanically connected to a generator 224 via a transmission 222. In the example shown, the planetary carrier 10 is permanently anti-rotationally connected to the rotor shaft 216. A brake 226 is also arranged in the operative connection between the transmission 222 and the generator 224, acting on the input shaft of the generator 224. The nacelle 220 is rotatably supported at the upper end of a tower 228, which is anchored to the ground. In one embodiment, the wind power generation facility 210 is constructed as an offshore wind power generation facility. In addition to the tower 228, the wind power generation facility 210 also has a grid interface 230.

[0073] List of reference numerals

[0074] 10 planetary frames

[0075] 12 planetary bolts

[0076] 14 Planetary Wheels

[0077] 16 bridging components

[0078] 20 First wall element

[0079] 22 Second wall element

[0080] 30 clamping elements

[0081] 32 locking elements

[0082] 40 bearings

[0083] 42 recess

[0084] 50 sleeve

[0085] 70 Sun Gear

[0086] 72 rolling bearing

[0087] 74 sliding bearing

[0088] 76 Oil Guiding Unit

[0089] 78 rolling bearing

[0090] 80 oil passage

[0091] 82 radial through openings

[0092] 84 axial through opening

[0093] 86 oil distribution ring

[0094] 88 Oil Storage Department

[0095] 90-degree axial through opening

[0096] 92 radial channels

[0097] 200 wind power facilities

[0098] 212 rotor

[0099] 214 hubs

[0100] 216 rotor shaft

[0101] 218 rolling bearing

[0102] 220 cabin

[0103] 222 Transmission Device

[0104] 224 generator

[0105] 226 brake

[0106] 228 towers

[0107] 230 power grid interface

[0108] 100 positioning pins

[0109] 500 planetary support

[0110] 502 First Wall Component

[0111] 504 Second Wall Component

[0112] 506 bridging element

[0113] 508 planetary wheels

[0114] 510 Planetary Bolt

Claims

1. A planet carrier (10) for a planetary gear set, the planet carrier having a first wall element (20), a second wall element (22), and a planetary pin (12), wherein, The planetary bolt (12) is configured to rotatably support the planetary gear (14) thereon, wherein the wall elements (20, 22) are fastened together by at least one clamping device (30), and wherein the planetary bolt (12) is clamped between the two wall elements (20, 22) by the clamping device (30).

2. The planetary carrier (10) according to claim 1, characterized in that, The planetary pin (12) is constructed as a hollow pin.

3. The planetary carrier (10) according to claim 2, characterized in that, The clamping element (30) of the clamping device is arranged inside the planetary bolt (12).

4. The planetary carrier (10) according to claim 2 or 3, characterized in that, The planet carrier (10) has a sleeve (50) arranged inside the planetary pin (12).

5. The planetary carrier (10) according to claim 4, characterized in that, The planetary carrier (10) is provided with an oil guide leading to the support of the planetary gear (14) on the planetary pin (12), wherein the oil passage (80) of the oil guide is provided between the planetary pin (12) and the sleeve (50) and is configured to actively lubricate the support of the planetary gear (14).

6. The planetary carrier (10) according to claim 5, characterized in that, An oil reservoir (88) for passive lubrication is constructed inside the sleeve (50).

7. The planetary carrier (10) according to any one of the preceding claims, characterized in that, The planetary bolt (12) is composed of two parts.

8. The planetary carrier (10) according to any one of the preceding claims, characterized in that, The first wall element (20) is configured with a first bearing (40) on which the planetary bolt (12) is arranged, and the second wall element (22) is configured with a second bearing (40) on which the planetary bolt (12) is arranged.

9. The planetary carrier (10) according to any one of the preceding claims, characterized in that, The corresponding bearing (40) is configured as a recess in the side of the corresponding wall element (20, 22) facing the planetary bolt (12).

10. The planetary carrier (10) according to claim 9, characterized in that, The corresponding bearing (40) gradually tapers away from the planetary bolt (12).

11. The planetary carrier (10) according to any one of the preceding claims, characterized in that, The planetary carrier (10) has a bridging element (16) which is clamped between the two wall elements (20, 22) by the clamping device, wherein the bridging element (16) is arranged radially outward relative to the planetary bolt (12).

12. The planetary carrier (10) according to claim 11, characterized in that, The bridging element (16) is arranged circumferentially spaced from the planetary bolt (12).

13. The planetary carrier (10) according to claim 11 or 12, characterized in that, A locating pin (100) is arranged between at least one of the two wall elements (20, 22) and the bridging element (16).

14. The planetary carrier (10) according to any one of the preceding claims, characterized in that, The planet carrier (10) has at least two planetary bolts (12) spaced apart from each other in the circumferential direction, wherein the first wall element (20) has a recess in the circumferential direction between the two planetary bolts (12).

15. A planetary gear set for a transmission device (222), wherein, The planetary gear set has at least one planet carrier (10) according to any one of the preceding claims.

16. A wind power generation facility (210) having a transmission device (222) having a planetary carrier (10) according to any one of claims 1 to 14 or a planetary gear set according to claim 15.

Images