Earth and sand hopper and self-propelled type quality of soil revised machine null of quality of soil revised

摘要

PROBLEM TO BE SOLVED: To prevent the stay of the sediment thrown into a sediment hopper inside of the hopper with the simple structure. ;SOLUTION: A hopper main body 20 of the sediment hopper is provided with a rib 24 at an upper framework 22 side thereof, and a flexible sheet 50 formed of a rubber sheet or a fluororesin sheet is installed in the hopper so as to cover over the whole surface of the inner surface side of the hopper main body 20. A certain degree of looseness is given to the flexible sheet 50 so that the sheet is floated at a certain degree from an upper framework 22 and a lower framework 23, and both an upper and a lower ends of the flexible sheet 50 is pinched between wall surfaces of the upper framework 22, the lower frame work 23 and sealing plate pieces 51, and removably fixed by bolts 52.;COPYRIGHT: (C)2001,JPO