Patent ID: 11970833
Assignee: LIEBHERR-HYDRAULIKBAGGER GMBH
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 14:
15. A quick coupling for coupling a tool to a boom of a working machine, comprising:
a quick coupling part at a boom side and a quick coupling part at a tool side; and
an energy circuit coupling for an automatic coupling of an energy connector at the tool side to an energy connector at the boom side,
wherein the quick coupling parts are reversibly latchable to one another via a pair of spaced apart latching axles;
wherein the energy circuit coupling comprises an energy coupling part at the boom side and at the tool side that are arranged at the quick coupling parts such that they move toward one another and thereby automatically couple with one another by pivoting together of the quick coupling parts about a first latching axle on an orbit about the first latching axle;
wherein at least one movable energy coupling part is pivotable about an axle in parallel with the first latching axle and is movably supported perpendicular thereto;
wherein the energy circuit coupling comprises a linear guide that is configured to compensate relative movement of the energy coupling parts occurring along an orbit on the pivoting together of the quick coupling parts in cooperation with a movable support of the energy coupling parts and to guide the energy coupling parts linearly with respect to one another during coupling, comprising
a centering device by means of which the movable energy coupling part is holdable in a central position independently of its alignment and a movement of the movable energy coupling part relative to the quick coupling part fastened thereto is preventable in the absence of an external force,
with the centering device being configured to enable the movement of the movable energy coupling part relative to the quick coupling part fastened thereto on the automatic coupling with the other energy coupling part due to an external force generated by a coupling procedure;

wherein the movable energy coupling part is supported at the quick coupling part fastened thereto via two spaced apart carrier elements; and
wherein the two spaced apart carrier elements are arranged between the carrier elements, with each of the carrier elements having a centering element.