| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a levee plastering machine which, when an working part of the levee plastering machine is moved between an working position where a soil-working is carried out and a non-working position where a soil-working is not carried out, enables this moving work simply by the expanding or contracting action of an expansion/contraction member provided in a rocking mechanism of the levee plastering machine, without moving the working part up and down relative to a traveling machine body. <P>SOLUTION: When the working part is moved from a halfway position of a rightward movement to a right working position, both a first gas spring 20 and a second gas spring 30 contract. Thus when an offset frame 11 is moved from the right working position to a halfway position of the rightward movement, the repulsion of the second gas spring 30 is mainly used as an assist force, and with the repulsion of the first gas spring 20 also working additionally, a burden on an existing rocking cylinder is assisted. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
