| 摘要 |
<p>The machine for use in tunnelling or mining installations has a boom carrying a cutting device for acting on a working face. The boom is supported by a displaceable chassis for movement upwardly, downwardly, and transversely. An inclined trough is disposed beneath the beam to receive material detached from the face. A scraper-chain conveyor is rigidly connected to each side of the trough and a loading plate is used to transfer material from the trough to the conveyors. Each conveyor has an inclined section extending alongside the trough and adjoining an elevated horizontal section supported by supports, enabling the conveyor to pivot at least about an axis extending laterally of the longitudinal axis of the conveyor, to allow the trough to be raised and lowered.</p> |
