WORK EXECUTION METHOD FOR MANHOLE HANDRAIL HOLE AND HANDRAIL HOLE WORK EXECUTION MACHINE

PROBLEM TO BE SOLVED: To efficiently drill a handrail hole for mounting a handrail on the wall face of a manhole. SOLUTION: A lifting cylinder 12 is provided at the end of the arm 6 of a hydraulic shovel 1, an electric drill 23 is mounted at the lower end of the lifting cylinder 12 via a moving mech...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MUKAI SHUNSUKE, OZURU TOYOFUMI, KAWAMOTO TADAYUKI, TOMOSAWA SHIGEJI
Format:	Patent
Sprache:	eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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