| 摘要 |
A power train for driving a functional mechanism of a mining machine includes a sealing mechanism extendable across the space between drive and driven units in the power train and surrounding a drive shaft extending between the two units. The sealing mechanism includes a tubular seal carrier with one end portion which is sealable against an annular seal face on one of the units and an opposite end portion which is sealable against a sealing ring surface on the other of the units for sealed protection of a drive shaft connected between the units. A clamp is connectable between the one end of the carrier and the one unit to pull the carrier into sealing engagement with such unit while maintaining sealing contact with the other unit. When the clamp is released, the carrier is free to be moved into a retracted position freeing the space between the units to be used in removing either of the units from the power train.
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