| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To allow lower arms to rationally secure strength to stand abutting on stoppers in a working vehicle for regulating oscillating ranges of suspensions by making the lower arms abut on the stoppers. <P>SOLUTION: In this tractor 1, the suspensions 3/3 having upper arms 24/24, the lower arms 25/25 and hydraulic cylinders 26/26 for rotating and driving the lower arms 25/25 are provided, a center case 9 is provided in a lower portion of a machine body frame 8, and the suspensions 3/3 are mounted to the center case 9 and the machine body frame 8. Bases of the lower frames 25/25 are vertically rotatably supported on a front face, a rear face or front and rear faces of the center case 9. Stoppers 35a/35a/35b/35b provided projectingly from the center case 9 are provided in vicinities of the bases of the lower arms 25/25. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
