Drill feeding and hoisting system for an earthdrill

Details Drill feeding and hoisting system for an earthdrill Drill feeding and hoisting system for an earthdrill

1985-11-01

1987-06-09

Kazenske, E. R.

Tool driving or impacting

With vehicle support for drive

Drive structure moved to nonuse position for transport

173147, 175170, E21B 702, E21C 1102, B66C 2362

Patent

active

046713654

ABSTRACT:
A compact earthdrilling module for vehicle mounting includes a derrick having a conventional tophead-drive drill assembly slidably mounted thereon. The derrick includes an extendable top portion mounting a hoist. A single telescoping piston-cylinder assembly on the derrick moves the drillhead assembly along the derrick and extends the top portion of the derrick. The piston-cylinder assembly is hydraulically actuated.

REFERENCES:
patent: 3572517 (1971-03-01), Liebherr
patent: 4195698 (1980-04-01), Nakagawasai
patent: 4371041 (1983-02-01), Becker et al.
patent: 4394914 (1983-07-01), Privat

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