| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a self-propelled truck standing both rainwater and impact, seldom going to mulfunction, and having automatic changeover function in advancing directions. <P>SOLUTION: This self-propelled truck includes an advancing direction changeover operative member 36 shiftable between an advancing operative position B1 and a receding operative position B2 and a butt shifting member 39 that shifts from a non-butting position A1 to a butting position A2 when this truck butted on obstacle(s) T in traveling in the forward direction F. In this truck, the member 39 and the member 36 are coordinated in actuation with each other so that the member 36 automatically shifts from the position B1 to the position B2 on mechanically interlocking with the shifting action of the member 39 from the position A1 to the position A2. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
