Abstract: A seal assembly for an industrial transmission includes a vertically aligned lower power shaft to exchange torque with the industrial transmission, and a transmission component arranged radially outside the power shaft. The power shaft has a greater rotational speed than the transmission component during operation. A contactless first seal between the transmission component and the power shaft includes a conical first sealing gap, which is beveled in a direction of gravity and runs from radially outside to radially inside counter to the direction of gravity. A first overflow channel runs downward to at least a large extent in the direction of gravity and communicates with the first sealing gap. The first overflow channel ends below the first sealing gap in the direction of gravity and is embodied as an annular gap with a substantially constant flow cross section such as to avoid formation of a labyrinth seal.

Abstract: A planetary gear unit apparatus, in particular for an industrial gear unit, for example in the case of a vertical orientation of a drive train, includes a planetary carrier, a gear unit housing, at least one nozzle provided in/on the gear unit housing and designed to feed an oil medium, and planetary gears coupled to the planetary carrier. Each planetary gear includes an eccentrically arranged and axially running feed channel for oil medium. At least one nozzle is provided in an oil-communicating relation/arrangement with respect to the feed channel or to a corresponding circulating diameter of the feed channels. The planetary gears circulate in planetary ring gear supported in the gear unit housing.

Abstract: A planetary transmission for a wind turbine driven by a rotor includes a transmission housing, and a first planetary stage provided in the transmission housing about an axis of rotation. The first planetary stage includes a sun gear, a planet carrier and a ring gear. The planet carrier is designed at least indirectly to be drivingly connected to the rotor and includes a plurality of planet gears which revolve with the planet carrier and alternately mesh with the ring gear and the sun gear. A second planetary stage is provided in the transmission housing about the axis of rotation. A bearing is arranged within the sun gear and axially supports and mounts the sun gear in relation to the planet carrier of the first planetary stage such that the sun gear is rotatable about the axis of rotation.

Abstract: A shaft-hub connection for a planetary transmission includes an inner hub element and an outer hub element which is connected via a spline toothing in driving relationship with the inner hub element about a main axis of rotation and surrounding the inner hub element at an outer circumference. The inner hub element and the outer hub element bear against one another via a pairing of axial contact surfaces. An oil channel is formed by the inner hub element in a region of an axial position of the axial contact surfaces for oiling of the axial contact surfaces and opens out radially within the axial contact surfaces via an outlet mouth.

Abstract: A powertrain for a wind power installation includes a main bearing unit with a main shaft, and a planetary transmission driven by the main shaft and including a transmission housing and a planetary stage which revolves about a rotation axis in the transmission housing. The planetary stage includes a planet carrier, a ring gear, and a sun gear, with the planet carrier or the ring gear being drivingly connected, at least indirectly, to the rotor. The planet carrier includes planet gears which revolve conjointly with the planet carrier and alternately mesh with the ring gear and the sun gear. At least three guide elements disposed circumferentially about the rotation axis are each operatively connected alternately to the transmission housing and a circumferential region of the planet carrier. Each guide element is constructed of multiple parts and includes guide jaws disposed on axial sides of the planet carrier, respectively.

Abstract: A machine arrangement for rotary transmission of a drive power includes a housing element, a rolling-bearing arrangement including an inner bearing raceway, an outer bearing raceway, rolling bodes designed to roll on the inner and outer bearing raceways, and a bearing cover, and a rotation element held in the housing element via the rolling-bearing arrangement for rotation about an axis of rotation. The housing element has structure regions directed toward the rolling bodies. The inner and outer bearing raceways are formed by a material which is connected integrally to the structure regions respectively and which is applied additively to the structure regions. The bearing cover of the rolling-bearing arrangement is designed to include the structure region which forms the outer bearing raceway.

Abstract: In a method for mounting a prefabricated form-wound coil or tooth-wound coil on a layered laminated core to form a stator segment or stator, the form-wound coil or tooth-wound coil is insulated with insulation. Laminates are punched and stacked to form partial laminated cores and/or a laminated core, with the partial laminated cores being spaced apart from one another by spacers and forming substantially axially extending open slots of the laminated core. The form-wound coil or tooth-wound coil are radially inserted into the slots such as to embrace a tooth of the laminated core, and a removable auxiliary element is placed at an axial end face of the laminated core to protect the insulation of the form-wound coil or tooth-wound coil as the form-wound coil or tooth-wound coil is radially inserted into the slots. The auxiliary element is radially removed and repositioned on a further tooth of the laminated core.

Abstract: A tooth for a toothed torque transmission assembly includes a tooth flank designed for torque exchange with a counter flank of a meshing partner. The tooth flank includes a periodically extending tooth flank correction including a sinusoidal corrugation having a locally extending period length T, wherein a development of the sinusoidal corrugation of the periodically extending tooth flank correction defines a center line. The periodic tooth flank correction is overlaid with a spatial microstructure having a local maxima and/or a local minima and a shortest distance t of t<T/2 between the local maxima and/or the local minima with respect to the center line. A formation of the microstructure is dimensioned to generate additional structure-borne sound in running operation of the torque transmission assembly to mask a tonality in the emitted structure-borne sound.

Abstract: A drive train designed for a requirement profile includes a transmission to transmit and convert torque from a rotor shaft of a rotor. The transmission includes an Input transmission component which is unmounted on a rotor side for introducing the torque into the transmission and which partially protrudes on the rotor side out of a transmission housing and/or a ring gear of the transmission. The drive train further includes a coupling unit which is separate from the rotor shaft, from the rotor bearing arrangement and from the transmission, for permitting a torque-transmitting and rotationally rigid coupling of the rotor shaft to the input transmission component within the coupling unit. The coupling unit includes a bearing to mount the unmounted input transmission component within the coupling unit, with the input transmission component being mounted on the rotor side exclusively only by the bearing within the coupling unit.

Abstract: A planetary transmission includes first and second planetary stages. At least one of the first and second planetary stages includes a transmission component. The planetary transmission further includes a pilot bearing, and a double-walled pipe received in the pilot bearing and having a central portion designed to have an outlet point for dispensing lubricant into the transmission component. A bushing is disposed in a region of the outlet point such that a gap is formed between the bushing and the transmission component.

Abstract: An industrial gear unit designed as a planetary transmission for installation in a wind power installation includes an axle receptacle, an axle including two axial portions via which the axle is mounted in the axle receptacle in an axially fixed manner on both sides of a planet gear of the planetary transmission, and an intermediate element assembly mounted in an axially fixed manner between the axle and the axle receptacle in at least one of the axial portions of the axle and acting between the axle receptacle and the axle. The intermediate element assembly includes a surface portion which faces the axle and/or the axle receptacle and has a structured surface with a laser-structured surface for restraining the intermediate element assembly against displacement in an axial direction.

Abstract: A pitch tube for a blade pitch control system of a wind turbine includes a tube body extending from a first axial end to a second axial end, for passing supply lines through a transmission. The tube body is designed in multiple parts and made of a non-conductive material only in an axial partial region in order to electrically insulate the first axial end in relation to the second axial end and/or in order to electrically insulate the tube body in relation to the transmission.

Abstract: A rotor bearing unit for testing a drive component is described. The rotor bearing unit has a shaft part, a guide box, and a housing part. The shaft part is rotatably arranged relative to the housing part, the housing part is frictionally connected to the guide box, the housing part of the rotor bearing unit is designed to connect to a housing of the drive component to be tested in a force-fitting and/or form-fitting manner, and the shaft part of the rotor bearing unit is designed to connect to a shaft of the drive component to be tested in a force-fitting and/or form-fitting manner. Additionally, a test structure including such a rotor bearing unit is described.

Abstract: A stator antenna unit for mounting in a transmission housing structure and for interaction with a rotor element arranged in the transmission housing structure on a transmission component and describing an axial direction Includes an annular antenna holder designed of multiple parts and pivotable between a circumferentially closed position and a circumferentially open position via a hinge, a signal receiver extending circumferentially on the antenna holder, and a signal evaluation unit fastened to the antenna holder and connected electrically and in signal communication with the signal receiver.

Abstract: A pitch tube for a blade pitch control system of a wind turbine includes a tube body extending from a first axial end to a second axial end, for passing supply lines through a transmission. The tube body is designed in multiple parts and made of a non-conductive material only in an axial partial region in order to electrically insulate the first axial end in relation to the second axial end and/or in order to electrically insulate the tube body in relation to the transmission.

Abstract: A shaft-hub connection for a planetary transmission includes a shaft, a hub element surrounding an outer circumference of the shaft and drivingly connected to the shaft for rotation about a main rotation axis via splines, a housing element fixed with respect to the main rotation axis, and an oil channel extending in the housing element and the hub element and designed to open out in a region of the splines to supply at least the splines with lubricating oil for oiling. The oil channel forms between the housing element and the hub element a lubrication gap for transferring lubricating oil and extends radially from inside outwards in a region of the lubrication gap.