Alternate manual or power auxiliary control device for controlling winding doors or the like

摘要: This auxiliary control device for manually and rotatably driving, example in case of failure the current supply system, a motor reduction gear unit kinematically connected to winding door or grille, sectional door, like, comprises pulley adapted when rotated cause axial movement sliding member through medium cam disposed across member. on one hand set dogs first half-coupling which are engage another rigid with main driven shaft, other noses guiding projections formed rotary braking coaxially pulley. When two sets each fully disengaged from thus does not exert any antagonistic torque likely counteract actuation device.