Patent ID: 11885100
Assignee: DOOSAN BOBCAT NORTH AMERICA, INC.
Field: Civil engineering (Other fields)
Classification: CPC E  B | IPC B  E

Claim 4:
5. A power machine comprising:
a frame having first and second opposing sides, each extending in a direction from a front of the power machine to a rear of the power machine;
a lift arm assembly pivotally coupled to the frame and extending forward of the frame;
a first axle assembly having a first axle and a second axle assembly having a second axle both on the first side of the frame;
a third axle assembly having a third axle and a fourth axle assembly having a fourth axle both on the second side of the frame; and
a plurality of hubs each mounted to a different one of the first axle, second axle, third axle and fourth axle, wherein each of the plurality of hubs has a mounting structure that is configured to accept and secure thereto, one at a time, both a wheel type tractive element and a track assembly type tractive element to the corresponding axle such that the power machine can be converted between using the wheel type tractive elements and the track assembly type tractive elements; and
a first drive motor coupled to the first and second axles and configured to rotate the first and second axles to drive the wheel type tractive elements or track assembly type tractive elements mounted to the first and second axles;
a second drive motor coupled to the third and fourth axles and configured to rotate the third and fourth axles to drive the wheel type tractive elements or track assembly type tractive elements mounted to the third and fourth axles; and
a plurality of anti-rotation devices each mounted directly to, and extending from, a different one of the first, second, third, and fourth axle assemblies, each anti-rotation device extending toward a track of the corresponding track assembly type tractive element mounted on the corresponding axle and configured to engage the corresponding track assembly type tractive element to limit overall rotation of the track assembly type tractive element.