| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a working machine which can maintain traveling properties on a rugged road surface, can improve working stability when operating a working front device, and can make compatible both the properties by a simple structure. <P>SOLUTION: At work, two right and left front crawler units 224a, 224b are oscillated to take a steering attitude with a distance between front ends opening more than a distance between rear ends (in an inverted chevron shape when regarding the front side of the working machine as an upper side), and two right and left rear crawler units 224c, 224d are oscillated to take a steering attitude with a distance between rear ends opening more than a distance between front ends (in the chevron shape when regarding the front side of the working machine as the upper side). Thus the working machine 1 takes a first working attitude in which a stable region is enlarged and the working stability can be improved. Such traveling properties and the working stability can be obtained by the simple structure by only adding steering cylinders 206a to 206d for actively laterally oscillating the crawler units to a conventional structure. <P>COPYRIGHT: (C)2011,JPO&INPIT |
