Tool driving or impacting – With vehicle support for drive – Nontransporting means to support vehicle during tool operation
Patent
1991-11-06
1993-06-29
Watts, Douglas D.
Tool driving or impacting
With vehicle support for drive
Nontransporting means to support vehicle during tool operation
173 27, 173 28, 173 39, E21B 702
Patent
active
052225640
ABSTRACT:
A drilling machine includes a boom assembly which has two straight parallel longitudinal beams of extruded steel, each of a section defining straight parallel inwardly and outwardly facing ways, a drilling head in a carriage and rollers guiding said carriage for linear movement of said drilling head parallel to said inwardly facing ways, two straight parallel longitudinal boom extension members and rollers guiding said boom extension members in said outwardly facing ways, and cross members linking said boom extension members to form a frame, plate braces linking said beams in longitudinally spaced planes perpendicular to the axes of the beams, said plate braces being apertured to provide clearance for assembly and normal movement of said carriage, said drilling head, and drill tubes passing through said drilling head, and further longitudinal members linking said plate braces to form a cradle of the boom assembly, said cradle having brackets for pivotally supporting the boom assembly on a base. The carriage for the drilling head can be actuated by a hydraulic cylinder forming a single double ended piston rod, through chains anchored to the cradle and to the carriage and passing over sheaves attached to opposite ends of the piston rod.
REFERENCES:
patent: 3708024 (1973-01-01), Back
patent: 3732935 (1973-05-01), Gibson
patent: 3917005 (1975-11-01), Cannon et al.
patent: 4303130 (1981-12-01), Bonca
patent: 5082068 (1992-01-01), Cornell
Service Manual, 35D/40D and 55D/60D High Visibility Worldmast, Cascade Corporation 1990.
Boa Drilling Equipment Inc.
Schrock Allan M.
Watts Douglas D.
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