Improvements contributed to the construction of elevator appliances for maintenance. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements made to the construction of lifting devices for handling of the type comprising a lifting mast with at least two telescopic mounting frames associated with a control means for moving them in height, which are characterized in that said mast comprises a frame intended to be fixed to the chassis of the apparatus and slidable thereon, a first movable frame which in turn receives a second movable frame, said movable frames carrying flexible means of pulleys capable of being fixed so as to support in their movement the two movable frames, with the in order to allow a use called "normal" or, release these frames and allow relative displacements of them in order to allow a use called "exceptional", higher and with a reduced load. (Machine-translation by Google Translate, not legally binding)