| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring device capable of responding to a sudden change in properties of excavated ground. SOLUTION: An excavator 12 has a measuring device 10a for finding a flowing direction and a size of a mixture in a chamber 20. The measuring device 10a has a measuring rod 50 installed retractably to the chamber 20; and the flowing direction and the size of the mixture can be estimated from an amount of deformation of the measuring rod 50. On the other hand, a machine model of the chamber is set in advance, and a plurality of results of fluid analysis with visualized size, direction and distribution of the velocity in the chamber 20 are predetermined based on the viscosity of the mixture. Further, good correlations between the estimate obtained by the measuring device 10a and the results of the fluid analysis are selected; and the results of fluid analysis selected are considered as a state of flow at a time when the estimate is obtained. COPYRIGHT: (C)2008,JPO&INPIT |
