| 摘要 |
PROBLEM TO BE SOLVED: To reduce the production cost of a truck frame, and to enhance strength of a bonding part of a leg part and a center frame or a side frame. SOLUTION: A left front leg part 31 equipped with a center frame side bonding part 31A, a side frame side bonding part 31B, and an intermediate cylinder part 31C is integrally formed by a casting means. A left side plate 16 of the center frame 12 is constituted by a front leg part bonding surface 16A extending in parallel with the side frame 22 and bonded to the left front leg part 31, and a rear leg part bonding surface 16B bent backward the front leg part bonding surface 16A to the direction separated from the side frame 22 and bonded to a left rear leg part 32. Therefore, the production cost of the truck frame can be reduced. The rear leg part bonding surface 16B of the left side plate 16 can be bonded to an upper plate 14 and a lower plate 15 on a position adjacent to a round drum 13, and thereby the strength of the center frame 12 can be enhanced. COPYRIGHT: (C)2004,JPO
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