Imo Holding Gmbh

Werner Schröppel

Hubertus Frank

Erich Russ

Georg Hofmann

The invention relates to a rolling bearing arrangement () for mounting parts of a wind power plant (), comprising three relatively rotatable annular elements (-) arranged concentrically with one another and at least regionally inside one another for connection to relatively rotatable parts of the wind power plant, wherein two relatively rotatable connecting elements (-) are separated from each other by a gap () and partially or wholly overlap each other in the radial direction, wherein, further, provided in the region of a gap in radially overlapping regions of the annular connecting elements are at least two rows of rolling elements (), each of which rolls along a respective two raceways () that overlap each other at least regionally in the radial direction, as well as at least one additional row of rolling elements () whose raceways do not overlap in the radial direction, wherein the radially innermost connecting element and the radially outermost connecting element are connected to one machine part and the radially middle connecting element is connected to the respectively other machine part.

Roller bearing arrangement for mounting parts of a wind power plant and a wind power plant having a blade bearing designed in such a manner

A rotary joint for use in a system for generating energy from water power, the joint comprising a first rotationally symmetrical connecting element and a second rotationally symmetrical connecting element disposed concentrically with the first connecting element and rotatable relative thereto, an annular gap between the two connecting elements, and a row of rolling elements rolling along a race on each of the connecting elements, wherein provided to seal the annular gap is a sealing device having a sealing ring fixed to the first connecting element, and a circumferential sealing lip, or sealing surface, extends along a lead-in surface, wherein the second connecting element is divided into a race ring, with at least one race, and a lead-in ring with a lead-in surface for at least one sealing ring, the lead-in ring being removably connected to at least one race ring.

Rotary joint for underwater operation and system equipped therewith for generating energy from waterpower

The invention is directed to a high-power wind energy installation, wherein the rotor blades, to minimize the static and/or dynamic structural load and/or to damp vibrations, for example by generating counterforces to compensate for interference forces and moments, can be adjusted even when a constant wind velocity vdoes not warrant it, and to a method for operating such a wind energy installation; it is provided according to the invention to configure at least one rotor blade bearing therein as a rolling bearing that is optimized for a high number of inner race revolutions in that the total dynamic axial load rating C, defined according to DIN ISO 281, of all those rows (&#x3bc;) of a utilized rolling bearing according to DIN ISO 281 which participate in force transmission in an axial direction is at least 1.5 times the dynamic axial load rating Caccording to DIN ISO 281 of a double-row ball slewing bearing of comparable dimensions in terms of the cross-sectional area of the bearing and the circumference centered on the centroid, and having mutually identical balls in two rows and a support angle &#x3b1; of 45&#xb0;; and/or in that the rated life L, defined according to DIN ISO 281; of a utilized rolling bearing is at least 3.375 times the life L, calculated according to DIN ISO 281, of a double-row ball slewing bearing of comparable dimensions in terms of the cross-sectional area of the bearing and the circumference centered on the centroid, and having mutually identical balls in both rows and a support angle &#x3b1; of 45&#xb0;.

Wind power plant and method for operating the same

The invention relates to a bearing unit for a long rotor blade, especially a wind power installation, said bearing unit comprising two annular elements that can be rotated in relation to each other and are directly or indirectly connected to the rotor blade hub and to the rotor blade, and at least two running tracks that can be axially staggered in relation to each other and comprise peripheral rolling bodies with an approximately cylindrical shape, i.e. each comprising a lateral surface that is rotationally symmetrical to a rotational axis in a very precise manner. The aim of the invention is to be able to fully absorb the tipping moment caused by the wind pressure on the rotor blade and on the bearing unit, and optionally to absorb other forces and other moments. To this end, two running tracks are arranged between the two connection elements, are axially staggered in relation to each other, and comprise rolling bodies with an approximately cylindrical shape, said rolling bodies being oriented in such a way that the rotational axes thereof intersect the longitudinal axis of the rotor blade in question at an angle of between 30&#xb0; and 90&#xb0;. The invention also rates to a wind power installation provided with one such rotor blade bearing arrangement, and to a method for operating one such wind power installation. The at least one rotor blade in question is continuously rotted about the longitudinal axis thereof during the option of the wind power installation.

Bearing unit for a long rotor blade of a wind power installation, wind power installation comprising one such rotor blade bearing arrangement, and method for operating one such wind power installation

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Wendelstein, Germany

Werner Schröppel