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US 12,000,284 B1Granted
Swing arm plow apparatuses and methods
OwnerJason Sleethinventor
Life of this patent
Estimating the term…
Abstract
A longwall mining swing arm plow. The swing arm plow includes a plow panel attached to a 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.
Claims19
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.
4 more elements
A longwall mining swing-arm plow, comprising:
- a longwall mining walker-shield connecting bar for attachment to at least one walker-shield;
- and
- a swing-arm plow attached to the walker-shield connecting bar, the swing-arm plow having:
- a fixed plow panel attached to the walker-shield connecting bar by a hinge;
- a sliding plow panel adjacent to the fixed plow panel in a first position and extending lengthwise from the fixed plow panel in a second position
- an extending actuator attached to the fixed plow panel at a first end and the sliding plow panel at a second end and having a first tube and a second tube, the second tube sliding within the first tube, the first tube and the second tube have a keyed cross-sectional shape that minimizes rotation of the first tube in relation to the second tube, the extending actuator moving the sliding plow panel to the first and second positions;
- 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.
5 more elements
A method of removing a shield from a shield panel in a longwall mining operation, comprising:
- arranging a walker-shield perpendicular to the shield to be removed;
- attaching the walker-shield to a walker-shield connecting bar;
- attaching a swing-arm plow to the walker-shield connecting bar by a hinge;
- removing the shield to be removed;
- and
- operating a swing-arm plow to push debris away from the vicinity of the shield being removed.
3 more elements
A method of operating a swing-arm plow, comprising:
- attaching the fixed plow to a walker-shield using a bar, the fixed plow attached to the bar by a hinge, such that the sweeping actuator moves in an arc from the bar
- actuating an extending actuator to extend a sliding plow in alignment with a fixed plow;
- actuating a sweeping actuator to sweep debris with the fixed and sliding plows;
- retracting the sweeping actuator;
- and
- retracting the extending actuator.
3 more elements
Dependencies are inferred from the claim text.