VORRICHTUNG FUER DIE BEWEGUNG EINES TORBLATTES WAHLWEISE MITTELS EINES SICHERHEITSUEBERWACHTEN MOTORANTRIEBES ODER EINES ANTRIEBES VON HAND

摘要

Device for the actuation of a door wing, in particular of a roller- door wing, by means of a safety-monitored motor drive, which, for the selective actuation drive of the door wing by motor or manually, has in coaxial alignment with the drive shaft (2) of the drive motor (1) two further shafts (19; 20), whose one shaft which neighbours the rotor of the drive motor carries a gearwheel (4) which meshes with a gearwheel arranged on the shaft of a safety screw (9) and which can be connected relative to the rotor output shaft on the one hand to the further second shaft (18) on the other hand, as seen in the longitudinal direction, with the aid of clutches (16; 17) which are disengaged in the normal case, the further second shaft of the clutch having a neighbouring load-torque lock (20) which is connected on its side remote from the clutch to an emergency crank handle (21) in such a way that the two clutches (16, 17) are connected in the event of motor drive failure and the load-torque lock (20) transmits merely a torque from the receiver for the emergency crank handle (21) via the clutches (16; 17) to the drive shaft of the rotor and to the gearwheel pair (14, 15) which leads to the safety screw (9).