STRUCTURE OF AGITATING BLADE FOR GROUND IMPROVEMENT EQUIPMENT

PURPOSE:To make mixing easy with revolving in company with each other prevented and with excavated soil prevented from becoming dumpy lumps by installing side by side a large and a small arc-shaped agitating blades on the end of an outer and an inner shafts of a double shaft rotating in the opposite...

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Bibliographic Details
Main Authors SAGARA MASAHIRO, HARA SADAO
Format Patent
LanguageEnglish
Published 19.03.1991
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:PURPOSE:To make mixing easy with revolving in company with each other prevented and with excavated soil prevented from becoming dumpy lumps by installing side by side a large and a small arc-shaped agitating blades on the end of an outer and an inner shafts of a double shaft rotating in the opposite directions each other, and by making the small agitating blade rotate on the inside of the large agitating blade in the opposite direction. CONSTITUTION:A ground improvement equipment A is constructed of a mobile base machine 1 and a hardening agent pump 2. A small agitating blade body 11 is positioned in an inner space in roughly spherical shape formed by rotation of the inner peripheral edge 10-3 of a large agitating blade body 10, and is made to rotate in the direction opposite thereto. A hardening agent nozzle 13 is placed, with its ejecting direction positioned horizontal, between the lower end 11-2 of the small agitating blade body on the inside 8 and a supporting part 12 of the large agitating blade body. As a bit 6 reaches a specified depth, a rotary shaft 4 stops descent end the hardening agent supplied with the hardening agent pump 2 is ejected through the nozzle 13. Then the agent is mixed with excavated soil by agitation as the rotary shaft 4 ascends. Thereby the ground improvement is made in an excavated hole H.
Bibliography:Application Number: JP19900208773