FIELD: machine building.
SUBSTANCE: invention relates to arrester (10) for a rotor of a wind-driven power plant (100), as well as a method of arresting and/or turning rotor (106). Rotary arresting device includes rotor, rotating structural group and fixed stationary structural group, wherein on the rotating structural group there can be arranged toothed disc (11, 52, 62, 72, 200, 200', 200", 300, 300', 300", 400, 400', 400") with a plurality of located along the perimeter of arresting recesses (12, 15). Two adjacent arresting recesses form one tooth (16, 520). Arresting device comprises first arresting module (25, 120) with at least one first arresting element (122), second arresting module (26, 130) with at least one second arresting element (132). First and second arresting modules are mounted on stationary structural group, wherein first and second arresting elements are made and installed with possibility of entering into locking recesses of toothed disc, wherein in circumferential direction of the toothed disc the distance (A1) from the first arresting element to the second arresting element is a non-integer multiple of pitch (Z) of teeth of the tooth disc.
EFFECT: invention is aimed at simplification of installation, repair and maintenance of wind-driven power plant.
16 cl, 25 dwg
