CRAWLER VEHICLE

PROBLEM TO BE SOLVED: To facilitate assembly and disassembly work of a crewler device besides obtaining stable travel even during travel on the muddy ground. SOLUTION: A drive shaft 12 of a front axle device 9 is composed of a first shaft part 13 inserted through an axle housing 10, and a second shaft part 14 detachably provided at the first shaft part 13. A cylindrical member 18 is insert-fitted to the periphery of the second shaft part 14, and a boss part 21A of a swing bracket 21 is fitted in a relatively rotatable state to the outer peripheral side of the cylindrical member 18 through a bearing body 19 or the like. A male spline groove provided at the inner periphery of a hub 24 of a drive wheel 23 is spline-connected to a female spline groove 14C provided at the second shaft part 14, and the hub 24 is detachably fixed to the cylindrical member 18 using a bolt 26. A plurality of rolling wheels 22 are provided at the swing bracket 21, and a crawler 30 is wound between these rolling wheels 22 and the drive wheel 23.