US 12,031,279 B2
Earth working machine having a positive connection between the rotating working assembly and its rotary bearing
Hardy Wilhelmi, Dattenberg (DE); Karsten Buhr, Willroth (DE); Andreas Salz, Neustadt (DE); and Sascha Spöth, Heistenbach (DE)
Assigned to Wirtgen GmbH, Windhagen (DE)
Filed by Wirtgen GmbH, Windhagen (DE)
Filed on Apr. 14, 2023, as Appl. No. 18/300,921.
Application 18/300,921 is a continuation of application No. 17/171,292, filed on Feb. 9, 2021, granted, now 11,655,598.
Claims priority of application No. 10 2020 105 391.6 (DE), filed on Feb. 28, 2020.
Prior Publication US 2023/0323614 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E01C 23/088 (2006.01); E01C 23/12 (2006.01)
CPC E01C 23/088 (2013.01) [E01C 23/127 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An earth working machine, comprising:
a support structure including a first support structure area and a second support structure area;
a working assembly mounted on the support structure so as to be rotatable about a drive axis relative to the support structure, the drive axis defining an axial direction running longitudinally with respect to the drive axis, a radial direction running orthogonally with respect to the drive axis, and a circumferential direction running about the drive axis, in a reference state of the working assembly ready for a rotation of the working assembly about the drive axis;
a first rotary bearing rotatably mounting the working assembly in the first support structure area at a drive axial end of the working assembly;
a rotary bearing arrangement rotatably mounting the working assembly in the second support structure area at a retention axial end of the working assembly, the retention axial end being situated oppositely from the drive axial end in the axial direction, the rotary bearing arrangement including a second rotary bearing, an assembly side bearing configuration connected to the working assembly and a structure-side bearing configuration connected to the support structure such that the structure-side bearing configuration remains connected to the support structure when the support structure is separated from the working assembly;
wherein the assembly-side bearing configuration includes one of a bearing stem or a bearing sleeve connected to the retention axial end of the working assembly;
wherein the structure-side bearing configuration includes the other of the bearing stem or the bearing sleeve connected to the second support structure area;
wherein the bearing sleeve surrounds the bearing stem in the reference state, both the bearing sleeve and the bearing stem being rotatable about the drive axis relative to the second support structure area in the reference state, and the bearing stem and the bearing sleeve are configured to be axially removable from one another and thereby separable from one another;
wherein the working assembly includes a driver configuration including a driver surface;
wherein the structure-side bearing configuration includes a driver counterpart configuration including a driver counterpart surface; and
wherein the driver surface and the driver counterpart surface overlap in the axial direction in the reference state.