CONCRETE MIXER, AND DEVICE FOR PRODUCTION OF READY-MIXED CONCRETE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a concrete mixer capable of effectively cleaning the inside of a mixer body.SOLUTION: A concrete mixer of the present invention comprises: a mixer body 11 capable of housing a plurality of ingredients to be the raw material of a ready-mixed concrete; a nearly columnar kneading shaft 12 which is rotatably disposed inside the mixer body 11 and has plural blades 14 for kneading plural ingredients; a drive motor 15 bringing the kneading shaft 12 to rotation-drive to knead plural ingredients by the blades 14; a cleaning mechanism 21 for cleaning the inside of the mixer body 11; and a low-speed drive motor 20 for bringing the shaft 12 to rotation-drive at a lower speed than the rotation speed of the shaft 12 by the drive motor 15 when kneading plural ingredients. The kneading shaft 12 is rotated at low speed by the low-speed drive motor 20 when the inside of the mixer body 11 is cleaned by the cleaning mechanism 21.