Patent ID: 11866890
Assignee: WIRTGEN GMBH
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. A mobile earth working machine in a reference state ready for earth-working operation, comprising:
a machine frame;
a plurality of ground engaging drive units connected to the machine frame for moving the earth working machine across a ground surface;
a milling drum supported from the machine frame and configured to remove material from a region of a substrate;
a substrate material conveyor;
a pivot joint arrangement arranged functionally between the machine frame and the substrate material conveyor, the pivot joint arrangement including a frame-associated joint element connected to the machine frame immovably relative to the machine frame, and the pivot joint arrangement including a conveyor-associated joint element connected to the substrate material conveyor, the conveyor-associated joint element being pivotably connected to the frame-associated joint element by a pivot joint such that the conveyor-associated joint element is pivotable around a pivot axis relative to the frame-associated joint element; and
a mechanical coupling arranged functionally between the machine frame and the substrate material conveyor, the mechanical coupling being configured to detachably couple the substrate material conveyor to the machine frame, the mechanical coupling including a frame-side coupling configuration connected to the machine frame—and a conveyor-side counterpart coupling configuration connected to the substrate material conveyor, the mechanical coupling being spaced from the pivot joint;
wherein:
one of the coupling configuration and the counterpart coupling configuration includes an abutment structure having an abutment surface;
the other of the coupling configuration and the counterpart coupling configuration includes a contact structure having a contact surface;
the abutment structure and the contact structure are configured such that when the machine frame and the substrate material conveyor are in an operationally ready coupled state the contact surface is in abutting engagement with the abutment surface, the abutting engagement acting at least in a direction extending transversely to the pivot axis;
the abutment surface includes at least two differently aligned abutment surface portions arranged with an angular spacing around the pivot axis;
the contact surface includes at least two contact surface portions arranged with an angular spacing around the pivot axis;
one of the coupling configuration and the counterpart coupling configuration includes a first positive-engagement structure and the other of the coupling configuration and the counterpart coupling configuration includes a second positive-engagement structure, the first and second positive-engagement structures being in a positive engagement with one another, the positive engagement acting in a direction orthogonal to the pivot axis when the machine frame and the substrate material conveyor are in the operationally ready coupled state; and
when the machine frame and the substrate material conveyor are in the operationally ready coupled state at least one abutment surface portion and the contact surface portion engaging the at least one abutment surface portion are located, with respect to a direction orthogonal to the pivot axis, on each side of the first and the second positive-engagement structures.