| 摘要 |
PROBLEM TO BE SOLVED: To increase the rigidity of a side gate forming a deck and increase an efficiency for storing sediment on the deck. SOLUTION: An upper side frame body 45C forming the side gate 45 of the deck 41 is formed of a lower side surface 45C1, an outer side surface 45C2, and an inner side sloped surface 45C3 into a generally triangular closed section structure. Since the upper end part of the side gate 45 is formed into a sharp angle part 45C4 with a high rigidity, even if the bucket of a hydraulic excavator collides with the upper part of the side gate 45, an impact load can be received by the angle part 45C4, and the side gate can be suppressed from being deformed. Also, even if a part of the sediment discharged from the bucket onto the deck 41 is dropped on the side gate 45, the sediment can be guided to the inside of the deck 41 along the inner side sloped surface 45C3, and the efficiency for storing the sediment onto the deck 4 can be increased.
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