SAFETY FRAME STRUCTURE OF WORKING VEHICLE

PROBLEM TO BE SOLVED: To provide safety frame structure of a working vehicle which externally fits a holder part to a mounting bracket integrally forming a fixed wall and a boss part or the like on a seating part, and reduces the number of parts to enable a simple and low cost constitution by supporting a roll bar with a fulcrum pin and a fixing pin in a position-free manner. SOLUTION: A fixed wall 31 which is provided with a pin hole 35 inserting the seating part 30 and a fulcrum pin 21, and a plurality of pin holes 36, 37, 38 inserting a fixing pin 23, and a boss part 32 reinforcing the fixed wall 31, are integrally formed, an arch-shaped roll bar 2 striding over a seat 6c is formed in U shape in a plan view having the support width forming a holder part 17 with the fixed wall 31 and a boss part 32, and a pin hole 22 inserting the fulcrum pin 21 and a pin hole 25 retractably supporting a fixing pin 23 are provided on the side wall 20 of the holder part 17. The holder part 17 is externally fitted to the mounting bracket 12 to make a safety frame structure of the working vehicle supporting by connecting the both with the fulcrum pin 21 and the fixing pin 23. COPYRIGHT: (C)2004,JPO