PROBLEM TO BE SOLVED: To provide a land implement-towing working vehicle in addition to secure the protection of a machine body and an implement from an excessive traction load, capable of performing the work in a good efficiency by suppressing the discontinuation of the work caused by an operation corresponding to an overload, at the lowest limit.;SOLUTION: The land implement-towing working vehicle is constituted as capable of work-traveling by equipping right and left lower links (11) for setting the working depth of the implement linked with a land implement-towing device, and a controlling part (21) for adjusting to the set working depth by the lifting up and down-driving control of the lower links (11), wherein, the controlling part (21) is provided by detecting the traction load of the lower links (11), elevation-driving the lower links (11), when a predetermined time has passed while crossing a predetermined load limit (L), and stopping the elevation-driving, when the traction load during the elevation-driving decreases to a predetermined permissible value (L-α).;COPYRIGHT: (C)2010,JPO&INPIT
展开▼
