EXCAVATING DEVICE

PURPOSE:To attach a leader mast to a boom or detach it from the boom on a job site. CONSTITUTION:The boom combining cylinder part B1 of a leader mast B can be pivotally attached with a boom A capably of being combined or separated, and the boom combining cylinder part B1 is separably suspended by me...

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Bibliographic Details
Main Author OHORI MASATO
Format Patent
LanguageEnglish
Published 10.08.1993
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:PURPOSE:To attach a leader mast to a boom or detach it from the boom on a job site. CONSTITUTION:The boom combining cylinder part B1 of a leader mast B can be pivotally attached with a boom A capably of being combined or separated, and the boom combining cylinder part B1 is separably suspended by means of a main suspending device C provided on the boom belly part Al. The boom combining cylinder part B1 is separably suspended by means of a sub-suspending device D provided on the boom belly part A1 in rear of the main suspending device C. By lifting the boom combining cylinder part B1 by means of the main suspending device C, a pin hole S on the boom combining cylinder part B1 side is conformed to a pin hole S1 on the boom A side so as to enable combination with a pivotal pin 11.
Bibliography:Application Number: JP19920034581