US 12,467,220 B2
Trench cutter drive with decoupled inner wheel/integrated bearing
Roland Widmann, Unlingen (DE); and Johannes Halder, Ertingen (DE)
Assigned to Liebherr-Components Biberach GmbH, Biberach an der Riss (DE)
Filed by Liebherr-Components Biberach GmbH, Biberach an der Riss (DE)
Filed on Mar. 21, 2022, as Appl. No. 17/655,705.
Application 17/655,705 is a continuation of application No. PCT/EP2020/075793, filed on Sep. 16, 2020.
Claims priority of application No. 20 2019 105 230.9 (DE), filed on Sep. 20, 2019.
Prior Publication US 2022/0205212 A1, Jun. 30, 2022
Int. Cl. E02F 3/24 (2006.01); E02D 17/13 (2006.01); E02F 3/20 (2006.01); E02F 5/08 (2006.01); E02F 5/14 (2006.01)
CPC E02F 3/246 (2013.01) [E02F 3/205 (2013.01); E02F 5/08 (2013.01); E02F 5/14 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A drive device for a construction machine comprising a trench cutter, wherein the device comprises:
a connection support;
a wheel support rotatably supported on the connection support via at least one rolling bearing, and wherein the wheel support is configured to be rotationally driven relative to the connection support by a drive motor via at least one gear stage comprising a ring gear;
wherein the ring gear is arranged within the connection support, wherein the ring gear is movably and tiltably supported in a radial direction relative to the connection support by a flexible bearing element so as to be rotationally fixed to the connection support, wherein the flexible bearing element holds the ring gear rotationally fixed to the connection support and allows moving and tilting in the radial direction relative to the connection support.