| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase an interval between left and right attaching pedestals and to reduce weight while securing strength of a frame. <P>SOLUTION: A left rear vertical plate 20 which is one of left and right rear vertical plates 20 and 21 of a tail frame 18 is provided with a bend part 20C at an intermediate part in the front-to-back direction, and an interval in the left-to-right direction from the other right rear vertical plate 21 is made small on the side of a front part 20A and is made large on the side of a rear part 20B. The left and right rear vertical plates 20 and 21 are provided by joining front end sides thereof to rear end sides of left and right front vertical plates 14 and 15, and upper flanges 24 and 25 are provided on upper ends of both joint parts 22 and 23, so that beam structure with an I-shaped cross-section is formed. Attaching pedestals 32-35 for attaching an engine are joined to the left and right rear vertical plates 20 and 21 at a position where the interval is made large by the bend part 20C of the left rear vertical plate 20. <P>COPYRIGHT: (C)2012,JPO&INPIT |
