US 12,264,443 B2
Removing earth working method with a removing tool offset obliquely with respect to the propulsion direction, and earth working machine embodied to execute the method
Sebastian Winkels, Windeck (DE)
Assigned to Wirtgen GmbH, Windhagen (DE)
Filed by Wirtgen GmbH, Windhagen (DE)
Filed on Oct. 24, 2023, as Appl. No. 18/492,857.
Application 18/492,857 is a continuation of application No. 17/120,732, filed on Dec. 14, 2020, granted, now 11,802,384.
Claims priority of application No. 10 2019 135 867.1 (DE), filed on Dec. 30, 2019.
Prior Publication US 2024/0125060 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E01C 23/088 (2006.01); E01C 19/00 (2006.01); E01C 23/12 (2006.01)
CPC E01C 23/088 (2013.01) [E01C 23/127 (2013.01); E01C 19/004 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A mobile earth-removing earth working machine, comprising:
a machine frame having a roll axis extending parallel to a longitudinal machine frame direction and a yaw axis extending parallel to a vertical machine direction, the roll axis and the yaw axis defining a reference plane;
a propelling unit configured to support the machine frame from a substrate, the propelling unit including a plurality of steerable drive units rollable on the substrate;
a working apparatus carried by the machine frame and including an earth-removing tool rotatable around a working axis, the working axis being arranged with a constant angular orientation relative to the reference plane;
a working drive apparatus configured to drive the earth-removing tool to rotate around the working axis;
a propulsion drive apparatus configured to drive the earth working machine to perform a propelled motion in a propulsion direction relative to the substrate;
a steering apparatus configured to modify steering angles of the plurality of steerable drive units relative to the reference plane; and
a controller configured to receive and store in a data memory of the controller a predetermined value of a setting angle between the propulsion direction and the reference plane, the setting angle being different from zero, and the controller being configured to output control instructions to the steering apparatus to automatically maintain the setting angle at the predetermined value during an earth-removing operation; and
wherein the working axis is arranged orthogonally to the reference plane.