| 摘要 |
PROBLEM TO BE SOLVED: To simplify a procedure of work for adjusting a tread and to prevent the loosing of a fixing pin in a tread adjustable moving agricultural machine. SOLUTION: In a traveling machine body 1, a plurality of wheel mounting holes 5a, 5b are formed in an axle 5 supporting a boss 11 of a wheel 6 with a predetermined axial gap and a mounting position of the wheel 6 in the direction of the axle is changed by the selective insertion/removal of the first fixing pin 12 to and from the wheel mounting holes 5a, 5b. The first fixing pin 12 is undetachably supported to the boss 11 of the wheel 6 such that it can be inserted/removed to and from the wheel mounting holes 5a, 5b. A fixing pin support mechanism 14 for energizing to a wheel mounting hole insertion direction is provided. COPYRIGHT: (C)2005,JPO&NCIPI
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