| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete placing hopper for surely placing the concrete in a short time by forcibly discharging the concrete even when a concrete discharging port of the hopper is small. SOLUTION: In the concrete placing hopper 1 for placing the concrete by charging the concrete from the upper opening 2 and discharging it to a mold, an outer shell, etc. through the discharging port 4 formed in a bottom part 3, the discharging port 4 is formed to have the size that it is easily clogged with the concrete, and the discharging port 4 is provided with a transfer means A which forcibly discharges the concrete by being driven by power. COPYRIGHT: (C)2005,JPO&NCIPI
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