Air flow system for mining machine
AssigneeJoy MM Delaware, Inc.
InventorsJohn Willison, Richard D. Boyd, Brad Neilson
Life of this patent
Estimating the term…
Abstract
A mining machine includes a boom, a cutter head, a valve, and an actuator. The boom defines an internal chamber and includes a first end coupled to a frame, a second end, and an opening in fluid communication with the internal chamber. The cutter head includes a plurality of cutting bits and is supported on the second end of the boom. The valve is coupled to the boom and is movable between a closed position in which the opening is covered and an open position in which the opening is at least partially uncovered. The actuator is coupled to the valve to selectively move the valve between the closed position and the opened position.
Claims20
A mining machine comprising:
- a frame;
- a boom defining an internal chamber, the boom including a first end coupled to the frame, a second end, and an opening in fluid communication with the internal chamber;
- a cutter head including a plurality of cutting bits and supported on the second end of the boom;
- a valve coupled to the boom, the valve movable between a closed position in which the opening is covered and an open position in which the opening is at least partially uncovered;
- and
- an actuator coupled to the valve to selectively move the valve between the closed position and the opened position.
A boom for a mining machine having a frame and a cutter head, the boom comprising:
- an elongated shell having a first end configured to be coupled to the frame and a second end configured to support the cutter head, the shell defining an upper surface, a lower surface, and an internal chamber;
- an opening positioned on the lower surface and in fluid communication with the internal chamber;
- a valve movable between a closed position in which the opening is covered and an open position in which the opening is at least partially uncovered;
- and
- an actuator coupled to the valve to selectively move the valve between the closed position and the opened position.
A mining machine comprising:
- a frame;
- a boom defining an upper surface, a lower surface, and an internal chamber, the boom including a first end coupled to the frame, a second end, and an opening positioned on the lower surface and in fluid communication with the internal chamber;
- a cutter head including a plurality of cutting bits and supported on the second end of the boom;
- a plate coupled to the boom, the plate being movable from a closed position in which the opening is covered toward an open position in which the opening is at least partially uncovered;
- an actuator coupled to the plate to selectively move the plate between the closed position and the opened position;
- a sensor for detecting a position of the cutter head;
- and
- a control system for operating the actuator based on the sensed position of the cutter head.
Dependencies are inferred from the claim text.