| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete hopper which calculates the flow value of ready mixed concrete to judge whether the value is conformable or not and detects a product of uneven mixing. SOLUTION: The concrete hopper temporarily stores the ready mixed concrete prepared by kneading materials for the ready mixed concrete and discharges it. The target flow value of the ready mixed concrete to be kneaded in a prescribed mixing ratio is inputted by an input means. A prescribed opening control means fixing the gate opening of the hopper to have a prescribed cross-sectional area and a prescribed shape and a weight sensor detecting the weight of the ready mixed concrete are installed. A standard table of the change over time of the load of the weight sensor is prepared for each target flow value of the ready mixed concrete during prescribed opening. The change over time of the load of the weight sensor is detected when the ready mixed concrete with the target flow value given is discharged from the hopper. The detected value of the change over time of the load is compared with the standard table by a comparison means. The flow value of the ready mixed concrete to be discharged is calculated and mixing quality is detected. COPYRIGHT: (C)2007,JPO&INPIT
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