| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent damage caused by metal corrosion at a winding end of a coil spring. <P>SOLUTION: A crawler 15 is wound between an idle wheel 14 and a drive wheel 13 provided at a lower traveling body 11, and the coil spring 17 is suspended from the idle wheel 14 and the crawler 15. A cushion member 20 is provided on the inside face of the winding end 18 of the coil spring 17. At the compression of the coil spring 17, by a coil winding part 19 elastically abutting on the winding end 18 via the cushion member 20, there is no risk of the peeling of a coating coated on the winding end 18, and the damage of the winding end 18 is prevented. <P>COPYRIGHT: (C)2012,JPO&INPIT |
