Job department installation structure null of batsukuho

摘要

PURPOSE:To easily excavate a side ditch outside of working machine by a method in which a pivotal supporter for a boom fitting base and a boom supporter is set on the center line of machine body, and the center line of the working part is positioned biasedly from the center line of the machine body. CONSTITUTION:A back hoe A consists of crawler type travelers 2, a body frame 3 rotatably put on the travelers 2, a hood 5 incorporated with engine on the frame 3, a seat 14, an operating lever 13, and a working part 6. A boom supporter 8 is rotatably supported on a boom fitting base 7 in a freely laterally turnable manner, and the boom 12 of the working part 6 is attached to the supporter 8 in a vertically turnable manner. A pivotal supporter 9 for the fitting base 7 and the supporter 8 is set on the center line (a) of the machine body, and the center line (b) of the part 6 is set biasedly from the center line (a) of the machine body. The offset amount of a bucket on the tip of the part 6 can thus be taken by the biased amount, and side ditch can be easily excavated outside of the machine body.