CPC E21D 23/04 (2013.01) [E21D 19/02 (2013.01)] | 19 Claims |
1. A longwall mining swing-arm plow, comprising:
a longwall mining walker-shield having a base and a base lift advancing mechanism to move the longwall mining walker-shield;
a longwall mining walker-shield connecting bar attached to the walker-shield; and
a swing-arm plow attached to the walker-shield connecting bar, the swing-arm plow having:
a plow panel attached to the walker-shield connecting bar by a hinge; and
a sweeping actuator attached to the walker-shield connecting bar at a first end and the swing-arm plow at a second end to push the swing-arm plow in an arc around the hinge.
|