Abstract: A power generation device includes: a one-way clutch which is provided between an output shaft of a speed increaser and a drive shaft of a power generator, and which restricts relative rotation of the output shaft and the drive shaft in one direction and permits relative rotation thereof in another direction; and a plurality of elastic coupling members which are provided between the output shaft and the drive shaft, which are spaced in an axial direction, and which absorb misalignment between the output shaft and the drive shaft. The one-way clutch is disposed in a position axially outside an area between the plurality of elastic coupling members.

Abstract: A split type cage includes: a pair of annular portions including recess portions formed on an inner periphery side at intervals in a circumferential direction; and a pillar portion which includes pillar end portions on both end sides in an axial direction and fitted in the recess portions, and on which a reaction toward an other side in the circumferential direction acts. The recess portion includes a wedge-shaped surface forming a wedge-shaped space, which becomes narrower in a radial direction toward the other side in the circumferential direction, between the wedge-shaped surface and an outer peripheral surface of an inner ring. The pillar end portion has a wedge shape in which a radial dimension decreases toward the other side in the circumferential direction, and includes a radial outside surface contacting the wedge-shaped surface and a radial inside surface contacting the outer peripheral surface of the inner ring.

Abstract: A joint member for a wind power generation apparatus includes: a first rotor integrally rotating with an output shaft of a speed increaser; a second rotor integrally rotating with an input shaft of a generator; and a one-way clutch provided between the first rotor and the second rotor. A torsion promoting portion being readily twisted and elastically deformed is provided at a portion of the first rotor where power is transmitted from the output shaft to the one-way clutch.

Abstract: In a divided cage, a plurality of pockets for accommodating engaging elements between an inner ring and an outer ring of a one-way clutch are formed in a circumferential direction. The divided cage includes: a pair of ring-shaped portions which oppose each other in an axial direction and which are provided between the inner ring and the outer ring; and a plurality of pillar portions which are separated members from the pair of ring-shaped portions and which have end portions in the axial direction connected to the ring-shaped portions. Side faces of both the ring-shaped portions opposing each other in the axial direction are subjected to abrasion resistance treatment.

Abstract: A joint structure includes: an output side transmission shaft which rotates integrally with an output shaft of a speed increaser; an input side transmission shaft which rotates integrally with an input shaft of the speed increaser; a fixed housing; a bearing; and a one-way clutch which is fitted in the fixed housing. The one-way clutch integrally rotatably connects the output side transmission shaft and the input side transmission shaft under a condition where a rotation speed of the output shaft is higher than a rotation speed of the input shaft, and releases the connection between the output side transmission shaft and the input side transmission shaft under a condition where the rotation speed of the output shaft is lower than the rotation speed of the input shaft.

Abstract: In a torque limiter, wedge-shaped spaces are formed between inner and outer rings so as to be arranged in the circumferential direction. In each wedge-shaped space, there are arranged a first roller and a second roller that transmit torque between the inner and outer rings by being brought into wedge-engagement when the inner and outer rings rotate relative to each other in one direction and in the other direction, respectively. Between the first and second rollers, there is arranged an urging device that urges the first and second rollers in such directions that the first and second rollers are brought into wedge-engagement. Each wedge-shaped space is formed such that when the torque becomes equal to or higher than a predetermined value, a first wedge angle of the first roller or a second wedge angle of the second roller becomes such an angle that wedge-engagement of the roller is cancelled.

Abstract: A roller bearing cage according to one aspect of the invention is a cage having a ring shape for retaining an interval along a circumferential direction between a plurality of rolling elements in a roller bearing. The roller bearing cage includes: a plurality of bar-shaped members which are arranged along the circumferential direction and which restrain movement of the rolling elements along the circumferential direction; a plurality of connecting members, each of which connects end portions along a lengthwise direction of the bar-shaped members adjacent to each other along the circumferential direction; and a fixing structure which fixes the bar-shaped member and the connecting member so as to be relatively unrotatably around an axis line along the lengthwise direction of the bar-shaped member.

Abstract: A joint structure includes a clutch unit interposed between a shaft joint and a shaft body which is one of an output shaft of a speed increaser and an input shaft of a power generator. The clutch unit includes: a shaft coupling portion rotating integrally with the shaft body; a joint coupling portion rotating integrally with the shaft joint; and a one-way clutch provided between the shaft coupling portion and the joint coupling portion. The one-way clutch makes a connection integrally rotatably between the shaft coupling portion and the joint coupling portion in a state in which a rotation speed of the output shaft is higher than that of the input shaft, and releases the connection between the shaft coupling portion and the joint coupling portion in a state in which the rotation speed of the output shaft is lower than that of the input shaft.

Abstract: A rotation transmission device includes a one-way clutch which is provided between an output shaft of a speed increaser and an input shaft of a generator, which makes a connection between the output shaft and the input shaft to be rotatable integrally in a state in which a rotation speed of the output shaft is higher than that of the input shaft, and which cuts off the connection between the output shaft and the input shaft in a state in which the rotation speed of the output shaft is lower than that of the input shaft. The rotation transmission device further includes: a measurement section which measures a state of the one-way clutch which changes depending on a load exerted to the one-way clutch; and an acquisition section which acquires the load exerted to the one-way clutch on a basis of a measurement result of the measurement section.

Abstract: A wind power generator device includes: a windmill which rotates by receiving wind power; a power generator including a rotor; and a rotation transmission device which transmits rotation of the windmill to the rotor without a speed increase. The rotation transmission device includes a one-way clutch which makes a connection integrally and rotatably between the windmill and the rotor in a state in which a rotation speed of the windmill is higher than a rotation speed of the rotor, and which releases the connection in a state in which the rotation speed of the windmill is lower than the rotation speed of the rotor.

Abstract: A power generating device includes an input rotor that is provided to an output shaft of speed up gears so as to be capable of rotating together with the output shaft, an output rotor that is provided to a drive shaft of a generator so as to be capable of rotating together with the drive shaft, and a one-way clutch that is disposed between the input rotor and the output rotor. The one-way clutch connects the input rotor with the output rotor so as to rotate together with the input rotor and the output rotor when the rotation speed of the input rotor exceeds the rotation speed of the output rotor, and the one-way clutch is configured to release the connection between the input rotor and the output rotor when the rotation speed of the input rotor falls below the rotation speed of the output rotor.

Abstract: A power generation device includes a main shaft rotated by an external force, a speed-up gear, a high-speed shaft, a rolling bearing, a power generator, and a one-way clutch disposed between the output gear and the high-speed shaft. In a state where the main shaft is rotating in a positive direction, the one-way clutch integrally rotatably connects the output gear and the high-speed shaft to each other if a rotational speed of the output gear exceeds a rotational speed of the high-speed shaft, and breaks connection between the output gear and the high-speed shaft if the rotational speed of the output gear becomes lower than the rotational speed of the high-speed shaft.

Abstract: A one-way clutch structure includes: a pair of clutch members disposed between an output shaft and a drive shaft so as to oppose each other in an axial direction; and an engagement element interposed between these clutch members. When a rotation speed of the output shaft exceeds a rotation speed of the drive shaft, the engagement element engages with the clutch portion to connect the output shaft and the drive shaft so as to be integrally rotatable. When the rotation speed of the output shaft becomes lower than the rotation speed of the drive shaft, the engagement of the engagement elements is released to cut off connection between the output shaft and the drive shaft.

Abstract: A clutch unit includes a one-way clutch including a plurality of engaging elements which restrict relative rotation of an outside rotating body toward one side of a circumferential direction relative to an inside rotating body by engagement with the outside rotating body and which allow relative rotation toward the other side of the circumferential direction by releasing the engagement. An assembly method for this clutch unit includes: a first step of mounting an engaging member including the engaging elements to the inside rotating body; and a second step of mounting, after the first step, the outside rotating body to a radial outside of the engaging elements while the outside rotating body is rotated relative to the inside rotating body toward the other side of the circumferential direction.

Abstract: A one-way clutch includes: an inner ring; an outer ring forming a plurality of wedge-shaped spaces together with the inner ring; and a plurality of rollers respectively disposed in the wedge-shaped spaces, and integrally rotatably connects an output shaft of a speed-up gear and an input shaft of a power generator to each other by engagement of the rollers with an outer circumferential surface of the inner ring and an inner circumferential surface of the outer ring, and breaks the connection by releasing the engagement. A relationship of 1.1<?b/?a<1.4 is satisfied, where ?a represents a wedge angle of the wedge-shaped spaces obtained when a load torque is applied at an initial stage of the engagement of the rollers, and ?b represents a wedge angle obtained when a maximum load torque is applied.

Abstract: A shaft coupling device integrally rotatably connects an output shaft of a speed-up gear and an input shaft of a power generator to each other in a wind power generation device. The shaft coupling device includes a one-way clutch which is disposed between an inside rotating body and an outside rotating body along a radial direction, which integrally rotatably connects the inside rotating body and the outside rotating body to each other in a state in which a rotational speed of the output shaft exceeds a rotational speed of the input shaft, and breaks connection between the inside rotating body and the outside rotating body in a state in which the rotational speed of the output shaft is lower than the rotational speed of the input shaft.

Abstract: A one-way clutch, disposed between an input rotating body and an output rotating body, is used to connect the input and output rotating bodies so that the rotating bodies are rotatable integrally in a state in which the rotation speed of the input rotating body is higher than that of the output rotating body and to cut off the connection between the input and output rotating bodies in a state in which the rotation speed of the input rotating body is lower than that of the output rotating body. A plurality of engaging elements or an inner ring and an outer ring constituting the one-way clutch are made of a base material obtained by subjecting a martensitic stainless steel material to soft nitriding treatment, and the Vickers hardness of the portion up to 20 ?m from the surface of the contact portion thereof is 1000 to 1500 Hv.

Abstract: A one-way clutch includes: a plurality of engaging elements which restrict relative rotation toward the other side of a circumferential direction by engagement with an inner ring outer circumferential surface and an outer ring inner circumferential surface and which allows the relative rotation along the other side of the circumferential direction by releasing the engagement; and a ring-shaped cage which holds the engaging elements. In a clutch unit, a positioning member which is capable of contact a side surface of the cage in an axial direction and which positions the cage along the axial direction is provided between the one-way clutch and a rolling bearing.

Abstract: A one-way clutch used in a wind power generation device integrally rotatably connects an input rotating body and an output rotating body to each other in a state in which a rotational speed of the input rotating body exceeds a rotational speed of the output rotating body, and breaks connection between the input rotating body and the output rotating body in a state in which the rotational speed of the input rotating body is lower than the rotational speed of the output rotating body. The input rotating body and the output rotating body are allowed to relatively move along an axial direction, and a maximum allowance of movement is set to be larger than variation of a distance along the axial direction between an input shaft and an output shaft caused by state change.

Abstract: A one-way clutch is arranged between an output shaft of a speed increaser and a drive shaft of a generator in a wind power generator. The one-way clutch includes an inner ring, an outer ring, a plurality of rollers arranged between an outer periphery of the inner ring and an inner periphery of the outer ring, a cage that retains the rollers at predetermined intervals in a circumferential direction, and a plurality of elastic members that is attached to the cage and that urges the corresponding rollers in one direction. The cage includes a pair of axially facing annular portions and a plurality of cage bar portions formed separately from the annular portions, both axial end portions of each of the cage bar portions being fitted to the respective annular portions.