PROBLEM TO BE SOLVED: To eliminate a possibility that a travel machine body accidentally changes the route at the time of levee crossing travel or loading/unloading travel.SOLUTION: A work vehicle comprises a guide operation tool 130 which is operated by an operator standing in front of a travel machine body 1. The guide operation tool 130 is provided with a travel operation part 132 which is responsible for start and stop of the travel machine body 1. The work vehicle also comprises a differential mechanism 107 which transmits a transmission force from a transmission case 16 to right and left wheels 3 of the travel machine body 1, and a differential lock mechanism 109 which stops the differential drive of the differential mechanism 107. The guide operation tool 130 and the differential lock mechanism 109 are interlockingly connected via differential lock interlocking members 147, 148 for causing the differential lock mechanism 109 to perform a locking operation or locking releasing operation in conjunction with the operation of the guide operation tool 130.SELECTED DRAWING: Figure 15COPYRIGHT: (C)2017,JPO&INPIT【課題】畦越え走行や載せ降ろし走行の際に、走行機体が不用意に進路変更するおそれを解消する。【解決手段】本願発明の作業車両は、オペレータが走行機体1の前方に立って操作する誘導操作具130を備える。誘導操作具130には走行機体1の発進及び停止を司る走行操作部132を設ける。ミッションケース16からの変速動力を走行機体1の左右車輪3に伝達する差動機構107と、差動機構107の差動駆動を停止させるデフロック機構109とを備える。誘導操作具130の操作に連動してデフロック機構109をロック動又はロック解除動させるデフロック連動部材147,148を介して、誘導操作具130とデフロック機構109とを連動連結する。【選択図】図15
