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.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.COPYRIGHT: (C)2013,JPO&INPIT【課題】畦塗り機における作業部について、土作業を行う作業位置と土作業を行わない非作業位置との間で移動させる際に、走行機体に対する作業部の上下動作を行うことなく、畦塗り機における揺動機構に設けられた伸縮部材の伸縮動作のみにより移動作業を行うことができる畦塗り機の提供。【解決手段】右移動途中位置から右作業位置に移動させたときには、第1ガススプリング20及び第2ガススプリング30が共に縮むこととなる。このため、右作業位置から右移動途中位置に向けてオフセットフレーム11を移動させる際には、主に第2ガススプリング30の反発力を補助力とするとともに、追加的に第1ガススプリング20の反発力も働きながら、既設の揺動シリンダにかかる負担を補助する。【選択図】図6
