US 12,241,453 B2
Rotation limit detector
Boris Ginzburg, Brande (DK); and Soeren Adrian Schmidt, Vejle (DK)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande (DK)
Appl. No. 18/012,677
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Jun. 21, 2021, PCT No. PCT/EP2021/066790
§ 371(c)(1), (2) Date Dec. 23, 2022,
PCT Pub. No. WO2022/002659, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 20183112 (EP), filed on Jun. 30, 2020.
Prior Publication US 2023/0272778 A1, Aug. 31, 2023
Int. Cl. F03D 17/00 (2016.01); F03D 7/02 (2006.01)
CPC F03D 17/00 (2016.05) [F03D 7/0204 (2013.01); F05B 2270/329 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A rotation limit detector configured to detect a limit of rotation of a toothed ring of a rotating assembly, and comprising
a pinion mounted on a primary shaft and configured to engage with the toothed ring;
a transmission system configured to convert rotation of the primary shaft into rotation of a secondary shaft such that rotation of the secondary shaft through an angular range corresponds to a rotation of the toothed ring through its permitted range in a specific direction, and wherein the transmission system applies an inverse gear ratio to convert a full rotation of the primary shaft to a fraction of a full rotation of the secondary shaft;
a first switch actuator mounted on the secondary shaft, and a first switch configured for inclusion in a control circuit, wherein the first switch actuator is configured to actuate the first switch when the extent of rotation of the toothed ring has reached a predefined limit in a clockwise direction; and
a second switch actuator mounted on the secondary shaft, and a second switch configured for inclusion in the control circuit, wherein the second switch actuator is configured to actuate the second switch when the extent of rotation of the toothed ring has reached a predefined limit in a counter-clockwise direction.