| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a snowplow having excellent steerability by making changeable the ground-contact area of crawler belts to reduce operating force in the turning of a machine and in the lifting operation of a snow removing part in the crawler traveling device of the snowplow. SOLUTION: This snowplow 10 comprises the snow removing part 11 disposed forward of a machine frame 15 and a crawler traveling device 13 disposed under the machine frame 15. The traveling device 13 is formed of a drive sprocket 25, a driven sprocket 26, and a crawler belt 31 wound on these sprockets. A rolling wheel 27 pressing the crawler belt 31 in a ground-contact direction is disposed between the drive sprocket 25 and the driven sprocket 26. The drive sprocket 25 and the driven sprocket 26, the drive sprocket 25 and the rolling wheel 27, and the driven sprocket 27 and the rolling wheel 27 are made switchable each other to form the contact surfaces of the crawler belt 31 with the ground. COPYRIGHT: (C)2005,JPO&NCIPI
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