Coupling device for fastening e.g. closure hook at live boom of dredging shovel, has mounting element that is pivoted by liner drive force at slope portion on support surface of coupling element, to enable fixation of coupling elements

摘要

The coupling device (1) has coupling elements (4) which are cooperated with live boom (2) for fastening of tool (3). A rotatable mounting element (5) is arranged for fixing the coupling elements with respect to each other, by operating linear drive (6). A slide (7) between linear drive and mounting element is actuated by spring so that one of the two coupling elements is locked between the support and mounting element. The mounting element is pivoted by liner drive force at slope portion on support surface of coupling element so that fixation of coupling elements is enabled.