Mining shield base lift apparatuses and methods
AssigneeSwanson Industries, Inc.
InventorChristopher Scott Larew
Life of this patent
Estimating the term…
Abstract
A longwall mining shield base lift. The base lift includes a hydraulic cylinder having an apparatus for coupling the hydraulic cylinder to the longwall mining shield, a cylinder rod having a first end extending into the hydraulic cylinder and a second end for extending toward ground beneath the longwall mining shield, the second end being threaded axially, and a threaded wear pad threaded onto the cylinder rod. The wear pad includes a plurality of spanner holes for rotating the wear pad with a lever, at least one threaded retaining hole extending axially through the wear pad, and a retaining bolt threaded through the retaining hole until it contacts the cylinder rod.
Claims11
A longwall mining shield base lift, comprising:
- a hydraulic cylinder having an apparatus for coupling the hydraulic cylinder to the longwall mining shield;
- a cylinder rod having a first end extending into the hydraulic cylinder and a second end for extending toward ground beneath the longwall mining shield, the second end being threaded axially;
- and
- a threaded wear pad threaded onto the cylinder rod, the wear pad having:
- a plurality of spanner holes for rotating the wear pad with a lever;
- at least one threaded retaining hole extending axially through the wear pad;
- and
- a retaining bolt threaded through the at least one threaded retaining hole until it contacts the cylinder rod.
Dependencies are inferred from the claim text.