Abstract: An apparatus for damping a flywheel includes a drive plate integrally connected to a crankshaft A flywheel is connected to receive a rotating force from the drive plate through planetary gearing, and is mounted to rotate relative to the crankshaft. A rigidity imparting means is disposed on a path along which a rotating force is transferred between the drive plate and the flywheel. A mass body is provided on the flywheel, and is configured to perform relative rotation in a direction that offsets a torsional vibration of an engine transmitted to the flywheel.

Abstract: A device for holding wafer-shaped articles, such as semiconductor wafers, is equipped with a series of pins that are brought into contact with a peripheral edge of the wafer-shaped article, under control of a common gear ring or a series of conjointly operated gear sectors. In the regions of the gear ring or gear sectors engaging the pin assemblies, those elements are designed to yield more readily than other regions of the gear ring or gear sectors, to accommodate differential thermal expansion of the chuck components in the vicinity of the pin assemblies.

Abstract: A drive train component includes a housing having a plurality inner surfaces that collectively define an interior portion. A gear set is arranged within the interior portion. The gear set includes a first side and a second side. A gear shock control member is positioned between one of the first and second sides of the gear set and an adjacent component. The gear shock control member includes a plurality of pre-loaded biasing members that direct an axial force onto the gear set.

Abstract: A drive system has a transmission unit comprising at least one planet wheel stage, which has a hollow wheel, several planet wheels, a planet carrier and a sun wheel. Furthermore, a first shaft associated with the transmission unit is provided, which has a coupling flange that can be connected to a work machine shaft or rotor shaft and is mounted via the planet carrier. The transmission unit and a motor unit or generator unit connected to a second shaft of the transmission unit are enclosed by a gear housing which has a cardanic circumferentially symmetric or partially symmetric suspension for connection to a supporting structural element of the wind turbine.

Abstract: Assembly (57) for a speed reducer of a rotary electric machine, comprising: a ring gear (46) secured to a transverse wall (58); a base plate (60) to be securely and rotatably mounted relative to a mounting (16) of the machine; an axially acting resilient means, such as an axially acting resilient disc (64); and an added hub (68) on which the transverse wall (58) of the ring gear (46), the base plate (60), and the resilient means (64) are mounted. The hub (68) has at least one first shoulder (71) for supporting the axially acting resilient means (64), and at least one second shoulder (72) for supporting the transverse wall (58) of the ring gear (46). The assembly also relates to a starter, particularly for a motor vehicle.

Abstract: A wind power plant has a rotor, an integrated medium-speed electric generator, and a planetary transmission. The planetary transmission is arranged to convert a slow rotary motion of the rotor into a rapid rotary motion to operate the generator. The planetary transmission includes a transmission input shaft connected indirectly to the rotor and includes a transmission output shaft connected to the generator indirectly via a generator shaft. A coupling mechanism is arranged between the generator shaft and the planetary transmission to compensate axial, radial and angular misalignment.

Abstract: Double shock-absorbing steering wheel, in particular for automobile vehicles, comprising a primary inertia mass connected to an engine shaft (12), a secondary inertia mass (14) connected by clutch E to a gearbox BV, and a torsion damper (18) rotatably connecting the two inertia masses (10, 14), this torsion damper including an epicycloidal gear train whose outer crown wheel (22) engages with a spring (28) for absorption of vibrations and rotation acyclisms, said spring being mounted around the crown wheel (22) in a fixed frame (26).

Abstract: This reduction gear of an electric actuator (1) for driving a home screen, the reduction gear comprises a reduction stage having a sun gear (42) meshing with at least one planet gear (46, 46?) rotating about a respective shaft (47) and positioned in a drum (45), the planet gear meshing with a stationary ring (48) to drive the drum (45) in rotation about an axis of rotation (X4). The reduction gear further comprises first guide means (43) serving both to guide the sun gear (42) in rotation and to guide the drum (45) in rotation about the axis of rotation (X4).

Abstract: A planetary gear reducer (1) includes: a sun gear (5) having external teeth and fixed concentrically to a power input shaft (3); a plurality of planet gears (7) having external teeth and mashing with the sun gear (5); a ring gear (9) having internal teeth and meshing with the planet gears (7); a planet carrier (11) configured to support a plurality of planet shafts (13), each of which is a rotational axis of a corresponding one of the planet gears (7), and to output revolution of the plurality of planet gears (7) as first power; and a cylindrical support (27) connected to the ring gear (9) such that the cylindrical support (27) is non-rotatable relative to the ring gear (9), the cylindrical support (27) being configured to output rotation of the ring gear (9) as second power. The cylindrical support (27) includes, at its one part along the direction of a central axis, a flexible structure (41) which is curved radially inward and has a V-shaped longitudinal section.

Abstract: A star gear train for use in a gas turbine engine includes a sun gear, a ring gear, a plurality of star gears and a coupling system. The sun gear is rotatable by a shaft. The ring gear is secured to a ring gear shaft. Each of the plurality of star gears is rotatably mounted in a star carrier and meshes with the sun gear and the ring gear. The coupling system comprises a sun gear flexible coupling, a carrier flexible coupling and a deflection limiter. The sun gear flexible coupling connects the sun gear to the shaft. The carrier flexible coupling connects the carrier to a non-rotating mechanical ground. The deflection limiter is connected to the star carrier to limit excessive radial and circumferential displacement of the star gear train.

Abstract: A star gear train for use in a gas turbine engine includes a sun gear, a ring gear, a plurality of star gears and a coupling system. The sun gear is rotatable by a shaft. The ring gear is secured to a ring gear shaft. Each of the plurality of star gears is rotatably mounted in a star carrier and meshes with the sun gear and the ring gear. The coupling system comprises a sun gear flexible coupling, a carrier flexible coupling and a deflection limiter. The sun gear flexible coupling connects the sun gear to the shaft. The carrier flexible coupling connects the carrier to a non-rotating mechanical ground. The deflection limiter is connected to the star carrier to limit excessive radial and circumferential displacement of the star gear train.

Abstract: A turbomachine epicyclic gear system includes a sun gear rotatable around an axis, a ring gear radially outward of the sun gear, and a plurality of intermediate gears meshed with the sun gear and the ring gear. A plurality of journal pins are each configured to support one of the plurality of intermediate gears. Each of the plurality of journal pins has an asymmetric rim.

Abstract: A planetary gear system and a method. The planetary gear system includes a carrier body configured to receive planet gears, at least one pin received by the carrier body, and flex means positioned between the carrier body and the at least one pin. The method includes preparing the carrier, upon which a plurality of planet gears is mounted through planet pins, and providing flex means between the planet pins and the carrier, the flex means configured to enable movement of the planet pins in response to a force directed thereon.

Abstract: A pin for coupling a planet gear to a carrier in a planetary gear system is disclosed. The pin includes a first end, a second end, and an outer surface extending between the first end and the second end. In some embodiments, the pin further includes means for modifying the compliance of the pin at an interface between the pin and the carrier. In other embodiments, the pin further include a compliance feature defined in the outer surface, the compliance feature allowing greater compliance of the pin in the tangential direction than in the radial direction.

Abstract: A flywheel apparatus of an engine may include a primary wheel that receives a rotational force from the engine and has an integral ring gear, a secondary wheel that has a sun gear disposed coaxially with the ring gear, a carrier to which each rotary shaft of a plurality of planetary gears may be connected, the planetary gears being engaged between the integral ring gear and the sun gear, and a damping member elastically engaging between the carrier and the secondary wheel and providing an elastic force to the carrier during relative rotation between the carrier and the secondary wheel.

Abstract: A double shock-absorbing steering wheel, in particular for automobile vehicles, including a primary inertia mass connected to an engine shaft (12), a secondary inertia mass (14) connected by clutch E to a gearbox BV, and a torsion damper (18) rotatably connecting the two inertia masses (10, 14). The torsion damper includes an epicycloidal gear train whose outer crown wheel (22) engages with a spring (28) for absorption of vibrations and rotation acyclisms. The spring is mounted around the crown wheel (22) in a fixed frame (26).

Abstract: A planetary gear damper is provided having a ring gear, a plurality of planet gears meshed with the ring gear, and a sun gear meshed with the planet gears. The planetary gear damper provides for torsional damping which has long travel and provides low rate damping.

Abstract: An apparatus for eliminating backlash is disclosed, which is installed between a first planet gear and a second planet gear in a planetary gear set to be used for generating a preload elastic force in a direction perpendicular to the direction of an input torque of the planetary gear set so as to eliminate a two-way backlash of the planetary gear set.

Abstract: A flexpin assembly (B) for an epicyclic gear system (A) includes a flexpin (20) that at one end is cantilevered from a carrier end wall (12) and a sleeve (22) that surrounds the flexpin and is cantilevered from the flexpin at the other end of the flexpin. In addition, the assembly has an antifriction bearing (24) for supporting a planet pinion (6) around the sleeve. The flexpin has a base (30) that is configured to be anchored to a carrier wall, a head (32) to which the sleeve is attached, and a shank (34) located between the base and head. The sleeve has a mounting segment (78) that is connected to the head of the flexpin without a weld. Both may have tapered surfaces secured in contact by a plate (66) clamped against the mounting portion with screws (68) that thread into the head, thus enabling the sleeve to be detached from the pin. The head may have a cylindrical surface (72) over which the mounting segment of the sleeve fits with an interference fit exists.

Abstract: A torsional vibration damping arrangement, particularly for a drivetrain with an automatic transmission, includes an input region and an output region, wherein a first torque transmission path and parallel thereto a second torque transmission path and a coupling arrangement for superposing the torques transmitted via the torque transmission paths are provided between the input region and the output region. The torsional vibration damping arrangement further includes at least in the first torque transmission path a phase shifter arrangement for generating a phase shift of rotational irregularities transmitted via the first torque transmission path relative to rotational irregularities transmitted via the second torque transmission path.

Abstract: A gearbox for a wind turbine. The gearbox includes at least one first epicyclical gear stage, at least one second gear stage, and a torque transferring shaft including a shaft part and a connection part, wherein the torque transferring shaft is adapted for connecting a first gear of the first epicyclical gear stage with a second gear of the second gear stage and wherein the torque transferring shaft is connected to the second gear stage via the connection part to form a torque-transferring connection area between the connection part and the second gear stage and wherein the outer diameter of the shaft part of the torque transferring shaft is smaller than an inner diameter of the connection area between said torque transferring shaft and said second gear stage.

Abstract: An epicyclic gear system (A) includes helical sun and ring gears (2, 4) and helical planet pinions (6) located between and engaged with the sun and ring gears. The gear system also includes a carrier (8) having an end wall (12) and flexpins (20) cantilevered from the end wall and extended into the planet pinions. Each flexpin at its end remote from the end wall carries a sleeve (22) that extends back over the flexpin where it is spaced from the flexpin. The planet pinion for the flexpin rotates around the sleeve on a bearing (24). The arrangement is such that the flexpin will flex adjacent to the carrier end wall circumferentially along the pitch circle of the carrier in one direction and circumferentially in the opposite direction adjacent to attachment of the sleeve. But the helical gear imparts a couple to the planet pinion that seeks to tilt the sleeve radially toward or away from the main axis of the system.

Abstract: A combustion engine having at least one combustion chamber and a crankshaft is combined with a planetary gear train having a ring gear, a sun gear, and a plurality of planetary gears rotatably mounted on a planet carrier and interacting with the ring gear and the sun gear. In order to dampen or absorb vibrations of the crankshaft of the combustion engine, a vibration damper unit is provided to keep the vibrations away from the planetary gear train. The vibration damper unit includes a support member which is attached to the crankshaft at a location which is in closer proximity of the combustion chambers of the combustion engine than a connection member by which the crankshaft is coupled to the planetary gear train.

Abstract: A vehicle power transmission device having a structure with a carrier of a planetary gear device brought into spline fitting with a case that is a non-rotating member to stop rotating and a ring gear of the planetary gear device rotatably supported by the case via a bearing, is provided with a play reducing device that presses the carrier against the case to reduce a play in thrust direction formed between the carrier and the case.

Abstract: A power-distributed wind turbine transmission for transmitting a torque generated by a rotor hub to an output pinion rotating with increased speed compared to the former to drive an electric generator, wherein at least two parallel-connected planetary stages are provided for power-distributed speed increase internal to the transmission, wherein further coupling of the rotor hub is carried out by means of a connection ring element on the input side of the transmission, which is rotatably supported by a large roller bearing at a fixed transmission housing, and which transmits the force flow in a power-distributed manner to the hollow gears of the parallel-connected planetary stages by means of cardan-like decoupling means formed thereon.

Abstract: A journal bearing includes a main body and a connection portion. The main body extends radially outward from a central cavity to an interface surface. The connection portion supports an end of the main body and extends radially around the central cavity. The connection portion has a dimension selected as a proportion of a reference dimension of the main body to achieve a desired spring rate for the journal bearing.

Abstract: An epicyclic gear assembly has a plurality of planetary gear sets secured in a carrier. Each planetary gear set has a planet gear supported by a planet shaft, the planet shaft having its opposite ends supported within the carrier, the planet shaft being capable of defecting along at least a part of its length when the gear assembly is subject to torsional and rotational loads.

Abstract: An epicyclic gear assembly has a plurality of planetary gear sets secured in a carrier. Each planetary gear set has a planet gear supported by a planet shaft, the planet shaft having its opposite ends supported within the carrier, the planet shaft being capable of defecting along at least a part of its length when the gear assembly is subject to torsional and rotational loads.

Abstract: A gear mounting has a spindle (11) extending substantially normal to a carrier (12) and capable of radial excursions from an initial position, when under load. The spindle and carrier have generally conical abutment surfaces (23, 24) normals to which extend substantially through the centroid of a projecting portion of the spindle, and in the initial position of the spindle there is a gap between the abutment surfaces.

Abstract: A planet gear assembly, including: a planet pin; a bearing comprising an inner race secured to the planet pin at a planet pin bearing end; a planet gear; and a compliant annular plate arranged to secure the planet gear to the planet pin. Compliance of the annular plate permits rotation of the planet gear when a planet gear axis of rotation is not coincident with an axis of rotation of a portion of the planet pin in the annular plate.

Abstract: A planetary gear system is disclosed. The planetary gear system includes a carrier, a planet gear defining a central planet axis, and a pin coupling the planet gear to the carrier. The planetary gear system additionally includes a bearing disposed between the planet gear and the pin. The bearing includes a plurality of rolling elements. Each of the rolling elements is in contact with an inner race and an outer race. The planetary gear system further includes a resilient member. The resilient member is disposed between one of the inner race and the pin or the outer race and the planet gear.

Abstract: The planetary roller reducer, which is directly coupled to a motor, is provided with a casing (6), an input shaft (3) accommodated inside the casing and directly coupled to an output shaft (2) of the motor (1), an input shaft bearing (20) set between the casing and the input shaft to support the input shaft so as to rotate with respect to the casing, a sun shaft (4) installed on the input shaft, a carrier (8) accommodated in the casing, a plurality of planetary rollers (13) supported on the carrier so as to rotate and in external contact with the sun shaft, an elastic ring (5) accommodated in the casing and in internal contact with a plurality of the planetary rollers, and a first elastic member (25a) installed between the input shaft bearing and the input shaft to elastically support the input shaft.

Abstract: A planetary gear train is described which includes a sun gear, three or more planet gears, an annulus as well as a planet gear carrier, whereby the input is provided via the sun gear and the output is provided via the annulus or via the planet gear carrier, whereby each planet gear is mounted on both sides in a roller bearing, and whereby the planet gear carrier includes two axially spaced bearing washers as well as at least three webs that connect the bearing washers. Each roller bearing is configured as a single-row or multi-row cylindrical roller bearing, each planet gear has a flexurally elastic axis projecting axially on both sides beyond the gear body of the planet gear, and the connection between each roller bearing and the appertaining axis is configured to be spherically moveable.

Abstract: A dynamic damper device includes a planetary gear mechanism including plural differentially rotatable rotating elements, an elastic member that couples a rotating shaft rotated by being transmitted with a power with a first rotating element of the planetary gear mechanism, and a rotation control device that is coupled with a rotating element different from the first rotating element of the planetary gear mechanism and controls a rotation of the planetary gear mechanism by adjusting torque acting on the first rotating element. Accordingly, the dynamic damper device achieves an effect that vibration can be appropriately reduced.

Abstract: A sleeve supporting structure for an automatic transmission has an input shaft and an oil pump with an inner gear. The sleeve supporting structure includes a sleeve member that is supported at least two portions thereof in an axial direction of the sleeve member and configured to transmit rotation of the input shaft to the inner gear and drive the oil pump, an outer member that is disposed on a radial outside of the sleeve member, and an elastic member that is disposed on the sleeve member. The elastic member is disposed in a predetermined position in the axial direction of the sleeve member in which an amplitude of vibration of the sleeve member becomes maximum when a vibrating force is applied to the sleeve member from the inner gear. The elastic member is opposed to the outer member in the predetermined position.

Abstract: A gear assembly includes a flexible pin mounted to and supported by a planet carrier at one end. A tubular sleeve extends coaxially about the flexible pin and provides a deflection space between said tubular sleeve and said flexible pin. Said flexible pin moves, flexes or deflects under operational loads. A damping element is contained at least partially within the deflection space and surrounds at least partially said flexible pin.

Abstract: An epicyclic gear assembly has a central toothed sun gear unit mounted on a carrier plate and plurality of planetary gear sets surrounding the central gear in torque-transmitting relationship. Each of the planetary gear sets has a toothed planet gear supported by a planet shaft, the first end of which is cantilevered from the carrier plate. A second end of the planet shaft supports the planet gear. A double-tapered concave middle portion of the planet shaft allows flexing of the shaft so as to facilitate elastic deflection of the planet shaft while distributing load between the planet gear sets. The outer circumference of the middle portion has a pair of spaced outwardly convex protrusions formed between the first end and the second end.

Abstract: A central thrust washer for all planets of a planetary carrier of a planetary gear that is geometrically designed such that it engages in recesses in the annulus gear or the drive wheel or is connected to planetary wheel bearings of the planetary carrier so as to prevent any relative movement. For this purpose, at least one fixing element is provided on the thrust washer.

Abstract: An epicyclic gear system (A) includes a sun gear (2), a ring gear (4) located around the sun gear, planet gears (6) organized in two arrays between the sun and ring gears, and a carrier (8) having walls (14) located beyond the planet gears and flexpins (24) that project from the walls into the planet gears. Each flexpin includes an inner pin (30) provided with a flange 36 that is secured to the wall from which the inner pin projects, thus cantilevering the inner pin from the wall, and a sleeve (32) that is cantilevered from the opposite end of the inner pin and extends back over the inner pin, thus providing a double cantilever. Between the sleeve of the flexpin and the planet gear for that flexpin is a double row tapered roller bearing (26). The planet gears on the one array may be offset angularly with respect to the planet gears of the other array.

Abstract: A drive train component includes a housing having a plurality inner surfaces that collectively define an interior portion. A gear set is arranged within the interior portion. The gear set includes a first side and a second side. A gear shock control member is positioned between one of the first and second sides of the gear set and an adjacent component. The gear shock control member includes a plurality of pre-loaded biasing members that direct an axial force onto the gear set.

Abstract: A wind energy plant with a rotor, which is coupled to a gear via a rotor shaft, the rotor shaft being double bearing mounted via one rotor side bearing and one gear side bearing, wherein a connection between the rotor shaft and gear is provided at the gear side of the gear side bearing, and the gear side bearing props up on a machine carrier via at least one supporting equipment and the gear is detachably connected with the supporting equipment.

Abstract: The invention relates to a lubrication system for a gearbox with stationary and rotating gearbox parts particularly in a wind turbine. The system includes lubrication distribution means in the stationary and rotating gearbox parts such as lubrication bores and openings. One or more rotary transmissions establish a transmission channel between lubrication distribution means in said stationary and rotating gearbox parts where said one or more rotary transmission include at least two connecting means. The invention also relates to a wind turbine with a drive train including a gearbox, and a lubrication system.

Abstract: A gearbox for a wind turbine. The gearbox includes at least one first epicyclical gear stage, at least one second gear stage, and a torque transferring shaft including a shaft part and a connection part, wherein the torque transferring shaft is adapted for connecting a first gear of the first epicyclical gear stage with a second gear of the second gear stage and wherein the torque transferring shaft is connected to the second gear stage via the connection part to form a torque-transferring connection area between the connection part and the second gear stage and wherein the outer diameter of the shaft part of the torque transferring shaft is smaller than an inner diameter of the connection area between said torque transferring shaft and said second gear stage.

Abstract: An epicyclic gear system (A) includes a sun gear (2), a ring gear (4) located around the sun gear (2) and planet pinions (6) located between the sun and ring gears (2,4). The planet pinions (6) rotate on a carrier (8) that includes flexpins (20) that are cantilevered from a wall (12) of the carrier (8) and sleeves (22) that are attached to the remote ends of the flexpins (20) and extend back over the flexpins (20) to create a double cantilever. Bearings (24) support the planet pinions (6) on the sleeves (22) so that the planet pinions (6) rotate about the flexpins (20). The double cantilever enables the flexpins (2) to flex such that the axes (Y) of the planet pinions (6) remain parallel to the common axis (X) of the sun and ring gears (2, 4). Each sleeve (22) h an integrated bearing race (44) and a bearing seat (42) that carries a separate bearing race (60).

Abstract: A flexible pin for a helical gear system. A countering realignment equal and opposite to the misalignment caused by the overturning moment and other gear forces is created without adding components or wearing surfaces. On the pin elements, one or more different or varying cross sections with the principal axes of their sections non-vertically orientated utilize the tangential and radial forces to cause deflections in two planes to perfectly compensate for misalignment caused by helical gear forces, thus keeping the mesh aligned the same as when using spur gears and traditional flexpins.

Abstract: A planetary gear system is disclosed. The planetary gear system includes a carrier, a planet gear defining a central planet axis, and a pin coupling the planet gear to the carrier. The planetary gear system additionally includes a bearing disposed between the planet gear and the pin. The bearing includes a plurality of rolling elements. Each of the rolling elements is in contact with an inner race and an outer race. The planetary gear system further includes a resilient member. The resilient member is disposed between one of the inner race and the pin or the outer race and the planet gear.

Abstract: A sleeve supporting structure for an automatic transmission, including a sleeve member disposed on a radial outside of an input shaft, a rotational shaft portion disposed in a motor, an oil pump housing, and a stationary member supporting an outer circumferential surface of the rotational shaft portion and including a projection that projects toward a side of the oil pump. The sleeve member has one axial end portion overlapped with the rotational shaft portion in the radial direction thereof and an opposite axial end portion meshing with an inner gear of the oil pump, and is supported by an inner circumferential surface of the oil pump housing and an inner circumferential surface of the rotational shaft portion. The projection of the stationary member is fitted onto an outer circumferential surface of the oil pump housing so as to form a faucet joint in cooperation therewith.

Abstract: The present epicyclic gear includes a carrier (12), a generally central sun gear (11), an outer annular gear (13) and an intermediary helical planet gear (14) which is mounted on the carrier (12) by a flexible pin assembly (15). The gear further includes a reaction member in the form of a rolling ring (22) at each axial end of the helical planet gear (14) to provide a respective radially inward reaction load onto the planet gear (14) in a sense that the reaction members (22) together resist a twisting moment on the planet gear (14) arising from the tooth loads on that gear.

Abstract: Bogie plate (10) integrated or fastened to the planetary carrier (9) of a planetary gearbox (4) for a wind turbine (1), which, using a locking element (12) prevents faults in the gearbox (4), at moments of low torque, in which there is a grinding of the housing (13) of the planetary shaft (11) around a shaft perpendicular to the bogie plate (10).

Abstract: A planetary gear including a stationary ring gear, a rotatable planet carrier having an even number of at least four mirror-symmetrically arranged planet wheels, and a sun gear and comprising two bearings disposed opposite of the sun gear and arranged between the planet wheels is provided. The bearings connect the input or output element of the planetary gear to the planet carrier in the center plane of the planet carrier, with the bearings forming an imaginary axis of symmetry, and at least two planet wheels have having a lesser distance to each other than one of the planet wheels does to a further planet wheel.