Lifting device with collision protection has non-self locking gearbox, whereby a torque acting on the output shaft with idling force reliably effects rotation of the gearbox input shaft

摘要

Device has drive and braking device (2) controllable by suitable signals, a gearbox (3) with an input shaft (4), an output and a reduction drive connection between them, a coupling device (6) in the drive train with a rotary spindle and a device that biases the coupling device into a defined rotation direction. The gearbox is non-self locking; torque acting on the output shaft with idling force reliably effects gearbox input shaft rotation. -