ACTUATOR

摘要

The invention relates to an actuator comprising a shaft drive (1) setting a shaft (2) in rotation, wherein at least one rope (3) can be wound onto or off the shaft, the rope having a rope length and two rope ends, wherein the rope ends (3') can each be connected to a rope attachment support (4, 5). In the region of the rope attachment point a means is provided, by which the rope forces acting along the ropes each engage in tangential points diametrically opposed with respect to a shaft axis of the shaft, in that upon a rotation of the shaft for the purpose of winding the rope onto the shaft both rope ends spaced from the shaft can be moved relative to the shaft toward the shaft at equal speeds, and in that the ropes during winding around the shaft have contact, or have contact in a plurality of layers around the shaft while the axial position to the shaft remains the same and the winding radius increases.