Transmission gearcase for multiple cutting heads
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United States of America Patent
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Oct 12, 1999
Grant Date -
N/A
app pub date -
Oct 20, 1997
filing date -
Oct 20, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus is provided for mining a mineral seam. The apparatus includes a frame, a propulsion system as well as first and second cutters and a cutter motor for winning aggregate material from the mineral seam. The apparatus is characterized by the cutter including a transmission gearcase having a bevel gear set, first and second sun gears, first and second planetary gear sets, first and second fixed planetary gear set carriers and first and second rotating ring gears. The output from the drive motor is connected to the bevel gear set which in turn drives the first and second sun gears which in turn drive the respective first and second planetary gear sets that in turn drive the first and second ring gears. The ring gears drive the first and second cutters, respectively.
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