Selbsthemmendes Schneckenradgetriebe in einem Schnellauftorantrieb

摘要

In a high-speed door drive for double-leaf doors with a self-locking worm gear and a reduction gear, both a slip clutch and a shift clutch in the form of a conical clutch arranged between the wormwheel 6 and the output shaft 7 are provided in the worm gear. The conical clutch is maintained in the engaged state by a thrust piece 17 loaded via a cupspring 18. The clutch is released by a shift member 23 which acts on the thrust piece 17 counter to the compressive force of the spring 18. <IMAGE>