公开(公告)号：US11274655B2

公开(公告)日：2022-03-15

申请号：US16464126

申请日：2017-12-05

Applicant: NABTESCO CORPORATION

Inventor： Osamu Nohara ,  Shigeru Hosoda ,  Yuichi Asakawa

IPC: F03D7/04 ,  F03D17/00 ,  G01L5/24

Abstract: One object is to promptly and accurately sense an abnormal state of a wind turbine driving device. The wind turbine driving device includes a driving device body and a sensor. The driving device body is installed in one structure at a movable section of a wind turbine. The driving device body includes a meshing portion meshing with a ring gear installed in the other structure at the movable section of the wind turbine. The sensor measures a change in installation state of the driving device body with respect to the one structure.

公开(公告)号：US11905930B2

公开(公告)日：2024-02-20

申请号：US17466687

申请日：2021-09-03

Applicant: NABTESCO CORPORATION

Inventor： Yuichi Asakawa

IPC: F03D7/02 ,  F03D17/00

CPC classification number: F03D7/0248 ,  F03D7/022 ,  F03D7/0204 ,  F03D7/028 ,  F03D7/0208 ,  F03D7/0264 ,  F03D17/00 ,  F05B2260/80 ,  F05B2260/902 ,  F05B2260/903 ,  F05B2270/331 ,  F05B2270/332

Abstract: For each of actuators, the partial load ratio is output. An output device for a drive device of a wind turbine includes an obtaining unit for obtaining information relating to a load applied to each of a plurality of actuators, where the actuators are included in the drive device of the wind turbine and configured to cooperate with each other, a processing unit for, based on the information obtained by the obtaining unit, calculating a partial load ratio, where the partial load ratio represents a ratio of a load on each of the actuators to a total load and the total load is a sum of the loads on the respective actuators, and an output unit for outputting the partial load ratio.

公开(公告)号：US11808337B2

公开(公告)日：2023-11-07

申请号：US17683472

申请日：2022-03-01

Applicant: Nabtesco Corporation

Inventor： Masashi Imai ,  Yuichi Asakawa

IPC: F16H49/00 ,  F16H53/02

CPC classification number: F16H49/001 ,  F16H53/025 ,  F16H2049/003

Abstract: One aspect of the present invention provides a method for manufacturing a strain wave gear device. The method includes steps of measuring a between pin diameter of an internal gear, measuring an over pin diameter of an external gear, where the external gear is to be placed radially inside the internal gear, configured to mesh with the internal gear, and flexible, measuring a dimension of a bearing, where the bearing is to be placed radially inside the external gear, and flexible, and machining an elliptical cam, where the elliptical cam is to be placed radially inside the bearing, and configured to flex the external gear in a non-circular manner. The elliptical cam is machined based on the measured dimensions of the internal gear, external gear and bearing such that the internal and external gears mesh with each other at a constant position.

公开(公告)号：US09790920B2

公开(公告)日：2017-10-17

申请号：US14740895

申请日：2015-06-16

Applicant: NABTESCO CORPORATION

Inventor： Osamu Nohara ,  Yuichi Asakawa

IPC: F03D7/02 ,  F03D11/00 ,  F16H25/02 ,  F03D80/80 ,  F03D15/00

CPC classification number: F03D7/0204 ,  F03D13/20 ,  F03D15/00 ,  F03D80/70 ,  F03D80/88 ,  F05B2260/4031 ,  F16H25/02 ,  Y02E10/722 ,  Y02E10/726

Abstract: A rotation driving mechanism for windmill (1) includes an annular track part (2), a rotation driving part (11), and a plurality of swinging parts (15). The annular track part (2) is disposed on one of a base-side structure and a rotation-side structure, and has a track wall part (3) and first teeth (7). The rotation driving part (11) is fixed on the other of the base-side structure and the rotation-side structure. Each swinging part (15) has a swinging part body (16a) and second teeth (16b). When a rotating shaft (13) of the rotation driving part (11) is rotated so that the swinging parts (15) are swung with maintaining a predetermined phase difference thereamong, the swinging parts (15) are relatively moved with respect to the annular track part (2).