| 摘要 |
PROBLEM TO BE SOLVED: To provide a truck frame structure of a construction machine of integrally-shaped casting facilitating strength guarantee and quality guarantee. SOLUTION: The truck frame structure of the construction machine is composed of a side frame (14) for supporting a traveling device, a center frame (16) for supporting an upper part structure, and a connection part (15) for connecting the center frame (16) and the side frame (14), and the connection part (15) has an open cross sectional structure. COPYRIGHT: (C)2007,JPO&INPIT
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