| 摘要 |
PROBLEM TO BE SOLVED: To eliminate large sinking of a machine body rear part since ground pressure becomes too large by vertically swingingly supporting a truck frame, and arranging a variable stopper member for changing the swinging regulating position. SOLUTION: A vertical plate 45 formed by cutting out the center in a U shape is fixed to an outside end part of a lower plate 43b of a mount bracket 43, and stoppers 46, 46 formed of a steel plate are installed in front/rear two places of this vertical plate 45. The front side stopper 46 is fixed by fastening a nut by inserting a bolt 58 into a through hole bored in the vertical plate 45 and also inserting this bolt 58 into a long hole 59 formed in an arm of the stoppers 46, and an angle can be positionally changed in a range of the long hole 59. According to this constitution, when ground pressure becomes large since sinking quantity of a machine body rear part becomes large when the front side of a truck frame parts in floated upward at traveling time, the stoppers 46 are adjusted to regulate swinging of the truck frame to restrain sinking of a crawler.
|
