| 摘要 |
The invention provides a crawler frame provided with a machine body frame which is integrally formed by molding means wherein a machine body frame constituted of a pair of front leg supports and rear leg supports and a center frame is integrally formed by molding means as a continuous curved shape on a basis of a smooth curved surface so as to evenly receive loads by an entire machine body frame without generating any concentrated load, even if a load and a working load from an upper revolving body applied to the center frame, and a working load applied to a track frame at a time of traveling, revolving and working of a working machine are applied to the machine body frame.
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