MITSUBISHI MAHINDRA AGRICULTURAL MACHINERY CO LTD;三菱マヒンドラ農機株式会社
发明人:
TSUDA YOZO,都田 洋三
申请号：
JP2016249547
公开号：
JP2018103662A
申请日:
2016.12.22
申请国别(地区):
JP
年份:
2018
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide a travel operation structure of a work vehicle which can absorb the linkage backlash between a travel gear shift lever and hydraulic pressure infinite variable-speed drive, and surely return the hydraulic pressure infinite variable-speed drive to the neutral position.SOLUTION: A single interlock rod 42 having an engagement piece 42a is provided on a brake pedal 25 side for the returning operation of a travel gear shift lever 23 to a neutral position N through a linkage member 39 on the basis of the operation of the interlock rod 42 at the time when the brake pedal 25 is brake-operated during traveling, a forward-side return path 38f and a backward-side return path 38r for the returning operation of the travel gear shift lever 23 to the neutral position N are provided in the linkage member 39 provided on the travel gear shift lever 23 side, and the travel gear shift lever 23 is linked in a return operable manner to the neutral position N by selectively engagement-operating the engagement piece 42a of the interlock rod 42 at the brake pedal brake operation to the forward-side return path 38f and the backward-side return path 38r depending on the shift operation position of the travel gear shift lever 23.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】走行変速レバー及び油圧無段変速装置との連係ガタを吸収し、油圧無段変速装置を中立位置に確実に戻すことができる作業車両の走行操作構造を提供する。【解決手段】走行中にブレーキペダル２５が制動操作される際の連動ロッド４２の動作に基づき、連係部材３９を介して走行変速レバー２３を中立位置Ｎに戻し動作するに、ブレーキペダル２５側に係合片４２ａを有する単一の連動ロッド４２を設け、且つ走行変速レバー２３側に設ける連係部材３９に、走行変速レバー２３を中立位置Ｎに戻し動作させる前進側戻し経路３８ｆと後進側戻し経路３８ｒとを設けると共に、ブレーキペダル制動操作時の連動ロッド４２の係合片４２ａを、走行変速レバー２３の変速操作位置によって前進側戻し経路３８ｆと後進側戻し経路３８ｒとに選択的に係合動作させることにより、走行変速レバー２３を中立位置Ｎに戻し操作可能に連係させる。【選択図】図２
