PROBLEM TO BE SOLVED: To provide a scraping amount adjustment structure of seedlings in a transplanting machine in which an adjustment arm and an apron projected in a scratching shaft are facilitated in assembling and fitted without producing a large gap in an engagement groove, and thereby the scraping of the seedlings with high accuracy can be performed.SOLUTION: An arm groove 33 is notched in a width intermediate position of an adjustment arm 29 projected to a scraping shaft 27 having a scraping adjustment lever 26. An arm part 31 for generating elastic force from an arm tip side toward an arm attaching part 30 is formed, and an arm base hole 35 having a diameter larger than the groove width of the arm groove 33 and coming into communication with the arm groove 33 is bored in the arm attaching part 30. A groove width regulation member 36 is detachably fitted in the arm base hole 35. Thereby, the flexural deformation to the intra-hole side of a weak elasticity deformation part 31a is regulated, and an engagement groove 22 of an apron 10 and an arm head 32 of the adjustment arm 29 are constituted so as to be fitted freely.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】掻取軸に突設する調節アームとエプロンの組み付けを容易にすると共に、係合溝に大きな隙間を生ずることなく嵌合させることにより、精度の高い苗の掻取りを行うことができる移植機における苗の掻取量調節構造を提供する。【解決手段】掻取調節レバー26を有する掻取軸27に突設した調節アーム29の幅中間位置にアーム溝33を切欠し、アーム先端側からアーム取付部30に向けて弾性力を生じさせるアーム部31を形成すると共に、アーム取付部30にアーム溝33の溝幅より大きな直径を有してアーム溝33と連通するアーム基部孔35を穿設し、該アーム基部孔35内に溝幅規制部材36を係脱自在に嵌合させることにより、弱弾性変形部31aの孔内方側への撓み変形を規制し、エプロン10の係合溝22と調節アーム29のアーム頭部32とを嵌合自在に構成する。【選択図】図5
