CRANE DEVICE FOR PLACING CONCRETE

摘要

PROBLEM TO BE SOLVED: To place a sufficiently mixed concrete without the separation of materials and improve workability and work environment by minimizing the spattering of the placing concrete when the concrete is placed from the chute of a crane device for placing the concrete. SOLUTION: This crane device for placing the concrete comprises a vertically extending support post 1, an arm 10 installed on the support post rotatably around the axis of the support post, and the chute S for placing the concrete suspended from the tip part of the arm. The carrying route for the concrete to be placed through the chute is disposed along the support post and the arm. The chute comprises a mixing box 20 suspended by its own weight and extending in the vertical direction. The mixing box 20 comprises a plurality of deformed passages 22 and 23 for mixing by varying the cross sectional shape of the concrete flowing down therein and a downward discharge port b connected to these deformed passages. COPYRIGHT: (C)2005,JPO&NCIPI