FULL-SLEWING TYPE BACK HOE WORKING VEHICLE

摘要

PURPOSE:To enable the excavation work in front of a full-slewing type back hoe working vehicle to perform without any obstruction in sight by a method in which the pivotal supporting point for a boom and an arm is positioned in the neighborhood of the upside of the slewing center, and the slewing vehicular body is included within the slewing locus of the maximum outside end portion. CONSTITUTION:A pivotal supporting point Z for a boom 10 and an arm 11 is positioned at or near a slewing center X from front view of a slewing vehicular body 5. Both sides of a nearly equilateral triangle correspond with the upper portion of the bent portion of the boom 10 and the arm 11, and the tip of a bucket 12 is close to the inside of the bent portion of the boom 10. The slewing vehicular body 5 is included within the slewing locus S from plane view of the maximum outside end portion in relation to the slewing center X of the back hoe device 4. The minimum slewing radius of the slewing vehicular body can thus be greatly reduced. permitting the device 4 to work more easily in narrow places.