| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to stably support an energization body for energizing a tension wheel in a tension direction of a crawler belt and to adequately exhibit energization force thereof.SOLUTION: An adjustment mechanism 36 includes: a tension bolt 43 which is fixed to a first support body 33 and extends in a direction of movement of the first support body 33; an engagement body 44 which is engaged with the tension bolt 43; a rotary body 45 which is relatively movable in a direction of movement between itself and the engagement body 44 in the state that the rotary body is so fitted into the engagement body 44 as to be rotated integrally with the engagement body 44; an operation part 46 for rotationally operating the rotary body 45; and a second support body 26 which is fixed to a truck frame 16 and rotatably supports the rotary body 45, and through which the operation part 46 is penetrated and disposed. An energization body 35 is received and supported by a first support wall part 49 provided on the engagement body 44 at one end part thereof, and is further received and supported by a second support wall part 40 provided on the second support body 26 at the other end part thereof. |
