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Drilling rod, crawler belt cut into a mountain machine, cut discharge method
Drilling rod, crawler belt cut into a mountain machine, cut discharge method
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机译：钻杆，履带切入山机，切卸方法
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摘要
PROBLEM TO BE SOLVED: To reliably perform recovery of cuttings from a drilled hole.SOLUTION: A drilling rod 20 includes a rod member 21 that is attached to a crawler body 11, and a bit 22 that is provided at the tip of the rod member 21 to drill a hole in natural ground G. The rod member 21 comprises a hole 21a that circulates compressed air supplied from the outside, and an opening 25 that communicates the outside of the rod member 21 with the hole 21a to emit the jet of compressed air toward an outer peripheral side. The bit 22 comprises an exhaust nozzle 26 through which the compressed air supplied through the hole 21a is jetted from the tip of the bit 22.SELECTED DRAWING: Figure 1
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