Lifting device, has anchorage end with unit adjusting position of anchorage point on anchorage end to permit positioning of connecting arm according to preset angles defined between longitudinal axis of arm and vertical axis

摘要

The device has an anchorage end (5) with an anchorage unit (8) that defines an anchorage point (11). The end comprises an adjusting unit adjusting the position of the anchorage point on the anchorage end so as to permit the positioning of a connecting arm (7) according to several different predetermined angles defined between a longitudinal axis (9) of the connecting arm and a vertical axis (10).