PROBLEM TO BE SOLVED: To provide a gear shift operation device for a traveling hydraulic continuously variable transmission which can be minimized without using expensive equipment and can perform gear shift of a traveling device quickly by reducing an operational load of a gear shift operation tool of a gear shift lever or the like.SOLUTION: A gear shift operation device for a traveling hydraulic continuously variable transmission is characterized in that, in the gear shift operation device of the traveling hydraulic continuously variable transmission which rotatively adjusts a swash plate shaft (5a) of the traveling hydraulic continuously variable transmission (5) by gear shift operation of a gear shift operation tool (1) provided on a handling part, the gear shift operation tool (1) is interlocked with the swash plate shaft (5a) by an interlocking mechanism (4), an electrically driven motor (8) actuated based on a detection result of a gear shift sensor (3) which detects a gear shift operation amount of the gear shift operation tool (1) is provided, driving force of the electrically driven motor (8) is transmitted to the swash plate shaft (5a) via a friction plate (7a) and the gear shift operation by means of the gear shift operation tool (1) is assisted.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】本発明は、走行用油圧無段変速装置の変速操作装置を、高価な機器を使うことなく簡単な構成で小型化すると共に、変速レバー等の変速操作具の操作負荷を軽くして、走行装置の変速を迅速に行えるようにすることを課題とする。【解決手段】操縦部に設けた変速操作具(1)の変速操作によって走行用油圧無段変速装置(5)の斜板軸(5a)を回動調節する走行用油圧無段変速装置の変速操作装置において、前記変速操作具(1)と前記斜板軸(5a)を連動機構(4)で連動すると共に、前記変速操作具(1)の変速操作量を検出する変速センサ(3)の検出結果に基づいて作動する電動モータ(8)を設け、前記電動モータ(8)の駆動力を摩擦板(7a)を介して前記斜板軸(5a)に伝動し、前記変速操作具(1)による変速操作をアシストする構成としたことを特徴とする走行用油圧無段変速装置の変速操作装置とする。【選択図】図1
