Self propelled excavating vehicle

Details Self propelled excavating vehicle Self propelled excavating vehicle

1975-12-11

1977-08-09

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

299 22, 299 67, E21D 910

Patent

active

040406695

ABSTRACT:
A vehicle which can easily be dismantled into transportable units and reassembled readily at the tunnel site is provided. A major advantage of this vehicle is the requirement of low thrust during operation and adaptability to use in short tunnels and tunnels with variable rock formations. With only minor adjustments to the drill head assembly and crawler carriage, it is capable of conforming to variable diameters of tunnel sizes. Pneumatic drills in the drill head assembly are guided along the vehicle's path to cut kerfs into the rock. Fluid activated breaker elements enter the kerfs and break out the ridges of rock through smashing blows. The drill head assembly rotates as the kerf cutting process is repeated. The excavated rock is conveyed to the rear of the vehicle for easy disposal. The drills are capable of boring any type of rock, therefore, it is envisioned that this vehicle can excavate soft through very hard formations.

REFERENCES:
patent: 1462997 (1923-07-01), Anderson
patent: 1570829 (1926-01-01), Forsyth
patent: 2083834 (1937-06-01), Galuppo et al.
patent: 2942863 (1960-06-01), Joy
patent: 3297101 (1967-01-01), Wohlmeyer

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