| 摘要 |
PROBLEM TO BE SOLVED: To provide a crawler track to reduce a pit-a-pat noise generated at the time when a construction machinery runs on a hard ground such as asphalt, concrete. SOLUTION: A shoe pad structure to install on the outside of the endless type crawler track of the construction machinery is characterised by reducing the noise generated at the time of grounding the shoe pad by providing a grounding point on a circumscribed circle of the shoe pad or in the neighborhood of it with a rotation axis of a driving wheel or an idler wheel as its center. For example, the shoe pad is provided on the circumscribed circle or in its neighborhood by heightening the height of a central grouser higher than the height of grousers on both sides in the case of constituting the shoe pad of three of the grousers having projections. COPYRIGHT: (C)2004,JPO&NCIPI
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