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machine for propulsion of tunnel pipe in the mountains, with shovels for the inclusion of a lot
machine for propulsion of tunnel pipe in the mountains, with shovels for the inclusion of a lot
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机译:推进山区隧道管道的机器,其中包括许多铁铲
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摘要
The removal device for broken away rock is formed by blades (7) movable in the tunnel peripheral direction. These are formed as drop blades pivotable in a radial direction, to ensure removal of all material. The blades arranged after the breaking tool also permit taking of curves with the drive machine.
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