| 摘要 |
PROBLEM TO BE SOLVED: To efficiently perform a tension adjustment and impact adsorption of a substantially triangular crawler by a movement of an adjusting wheel. SOLUTION: The adjusting wheel 3 for adjusting tension, an idler driven wheel 4 and an intermediate idler 5 between these are arranged and supported in the longitudinal direction in a truck frame 2. A driving wheel 6 is arranged above the idler 5. A crawler 7 is wound on these whole wheels. The adjusting wheel 3 can be moved in the almost distant-near direction from the driving wheel 6, and is energized in the distant direction.
|
