| 摘要 |
PURPOSE:To reduce maloperation of a full-slewing type back hoe working vehicle by a method in which a boom is provided to the side of an operation control section, a sideward deviating mechanism is provided for a back hoe, a bucket is switched to a deviating attitude and positioned on the side of the slewing center, and the deviating attitude is controlled by a sequential operation control means. CONSTITUTION:A boom 10 is set on the side of an operation control section 4, and a sideward deviating mechanism 14 is provided to a back hoe device 6 for the fitting end 10a of a bucket 8 to the slewing base 7 of the boom 10. After the sideward deviation of the bucket 8 is detected by the action, the bucket 8 of non-deviated attitude is switched to deviation attitude, an arm 9 is put to a folded rocking action in relation to the boom 10, and the bucket 8 is switched to the deviated attitude on the side of the slewing base 7. A sequential operation control means A is provided which detects the movement of the bucket 8 to the forward position of the boom 10 due to the rocking toward the direction separating away from the boom 10 of the arm 9, thereby actuating the mechanism 14 and finally restore to a non-deviated attitude. The operation of the back hoe working vehicle can thus be relieved in operation steps. |
