Patent ID: 11885221
Assignee: JOY GLOBAL SURFACE MINING INC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A mining machine comprising:
a base having two drive tracks configured to rest on a ground surface and to move the mining machine along a first direction, wherein the drive tracks each have a length along the first direction between a front end of the drive track and a rear end of the drive track;
a carbody that extends between the two drive tracks, wherein the carbody includes a turntable, wherein the turntable is coupled to a frame, and defines an axis of rotation of the frame relative to the two drive tracks;
a stabilizer appendage coupled to the carbody, wherein the stabilizer appendage extends forward from the carbody along the first direction and is configured to contact the ground surface and provide stabilizing support during a digging operation;
an actuator coupled to the stabilizer appendage to move the stabilizer appendage between a first position and a second position;
wherein the stabilizer appendage includes two link arms and a support element that extends between the two link arms, wherein the actuator is configured to generate rotational movement of the two link arms to raise and lower the support element, wherein the support element is configured to contact the ground surface during the digging operation and is configured to be raised above the ground surface when not in the digging operation, and wherein the support element is further configured to rotate on a second axis spaced forward of the drive tracks; and
wherein the axis of rotation is positioned closer to the front ends of the drive tracks than the rear ends of the drive tracks.