Patent ID: 7150367

Claim:
Storage and retrieval unit comprising: a) a supporting carriage which is movable along a rack aisle on at least one substantially horizontal supporting rail by means of a lifting drive; b) a lifting platform carried along by the supporting carriage and intended for receiving at least one storage item, the lifting platform having a plurality of sides; c) a lifting apparatus by means of which the lifting platform is movable in the vertical direction relative to the supporting carriage, and which comprises at least two lifting traction means, on which the lifting platform is suspended from the supporting carriage; and d) a stabilising device which prevents lateral deflection of the lifting platform and comprises: da) at least three stabilisation traction means fastened to opposing sides of the lifting platform, at least two of the stabilisation traction means running to at least two fastening points arranged proximate one end of the rack aisle, and at least one of the stabilisation traction means running to a fastening point arranged proximate the other end of the rack aisle; db) for each of the stabilisation traction means a stabilisation drive, through the actuation of which the effective length of the stabilisation traction means between the lifting platform and the respective fastening point can be changed; dc) a control system which controls the drives in such a way that the stabilisation traction means are taut relative to the lifting platform upon positioning of the lifting platform in a desired position.