| 摘要 |
PROBLEM TO BE SOLVED: To provide a running device for a core-metal-less crawler capable of eliminating the risk of damaging its driving projections meshing with a driving part even if earth and sand etc. are deposited on the crawler surface, structured so that reinforcement is applied to the driving surface of each driving projection where a sprocket will chiefly contact when the earth and sand etc. is deposited, whereby destruction is precluded from being easily generated. SOLUTION: The core-metal-less crawler running device is furnished with the driving projections formed on the inside surface of the crawler and composed of the driving part to transmit the driving force in meshing with the projections one after another and the sprocket having at the forefront a flange part contacting continuously with the inside surface of the crawler formed on the left side and the right side of the driving part, wherein the diameter of the circumscribing circle to the driving part of the sprocket is approximately 5-50 mm smaller than the diameter of the flange part, the driving surface inclination angle of each crawler driving projection is formed at two stages, and the arrangement meets the relationθ1>θ2, whereθ1 is the inclination angle of the root part, ranging 60-90°, andθ2 is the inclination angle of the part contacting with the driving part, ranging 40-70°. In the illustration, the driving projection is shown by 12, while the inclination angles of the root and the apex are represented byθ1 andθ2, respectively. COPYRIGHT: (C)2007,JPO&INPIT
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