PROBLEM TO BE SOLVED: To further enhance safety by optimizing a retreat speed even if switched to either of a low-speed variable region or a high-speed variable region, and to enhance operability for an elderly by alleviating a burden of a lever operation of an operation lever mechanism.SOLUTION: A working vehicle comprises: a speed change mechanism 2 having a first lever part 3 shaft can vary a speed responding to a displacement position by being displaced to a forward side Ff, and can change the speed responding to the displacement position by being displaced to a retreat side Fr; a speed region changeover mechanism part 4 having a second lever part 5 which can switch a traveling speed to a high-speed variable region and a low-speed variable region by being displaced to at least a high-speed changeover position Xf and a low-speed changeover position Xs; and a lever position regulation mechanism part 6 for regulating a displacement position of the first lever part 3 at the retreat side Fr to a prescribed set position P1 ...when the second lever 5 is switched to a prescribed changeover position Xf ....SELECTED DRAWING: Figure 1
【課題】 低速可変領域又は高速可変領域のいずれに切換えた場合であっても後退速度の最適化を実現して安全性をより高めるとともに、操作レバー機構のレバー操作の負担を軽減して特に高齢者にとっての操作性を高める。【解決手段】 前進側Ffへ変位させることにより変位位置に対応して速度を可変し、かつ後退側Frへ変位させることにより変位位置に対応して速度を可変可能な第一レバー部3を有する速度変更機構部2と、少なくとも高速切換位置Xfと低速切換位置Xsに変位させることにより走行速度を高速可変領域と低速可変領域に切換可能な第二レバー部5を有する速度領域切換機構部4と、第二レバー部5を所定の切換位置Xf…に切換えた際に第一レバー部3の後退側Frにおける変位位置を所定の設定位置P1…に規制するレバー位置規制機構部6とを備える。【選択図】 図1
GEAR CHANGE DEVICE FOR WORKING VEHICLE
作業用車両の変速装置
2018-01-18
Patent
Electronic Resource
Japanese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |