PROBLEM TO BE SOLVED: To settle the problem that, a method ejecting or spraying washing water to the under surface of a mowing blade cover to wash is difficult to keep good washing effect in washing with water because in mowing work, deformation and damage are often caused by receiving reaping impact force, grass twining or the like on the washing water-ejecting nozzle rotating with a blade shaft monolithically and an ejecting water hole part, a water spraying rim part or the like of a water-spraying dish or the like.SOLUTION: There is provided a washing apparatus of a mower deck, provided by: setting, on the blade shaft 2 which has a blade 3 at the lower end part and axially attached to a mower deck 12, an inner water spray dish 6 opening a peripheral upper rim, having a dish rim 4 and receiving washing water supplied from a water supply pipe 33 to guide spray water to the peripheral upper part, and an outer water-spraying dish 7 having an inclined dish rim 5 setting, on a dish space part 8 between the dish rim 4 of the inner water-spraying dish 6 and the inclined dish rim 5 of the outer water-spraying dish 7, an annular guide projection ridge part 9 formed on the mowing blade cover 1 under surface so as to face thereto and setting a water-spraying terminal rim 40 of the inclined dish rim 5 to extend to the peripheral side high position of the guide projection ridge part 9 so as to approach to the under surface of the mowing blade cover 1.COPYRIGHT: (C)2012,JPO&INPIT【課題】洗浄水を刈刃カバーの下面に噴出、乃至放水洗浄する形態では、刈取作業時に、これらブレード軸と一体回転の洗浄水の噴出ノズルや、放水皿等の、噴水孔部、乃至放水縁部等が、刈取衝撃力や芝草の巻き付き等を受けて、変形、破損することが多く、水洗浄時は良好な洗浄効果を維持し難い。【解決手段】下端部にブレード3を有してモーアデッキ12に軸装されるブレード軸2に、外周上縁を開口し、皿縁4を有して、給水パイプ33から供給される洗浄水を受けて外周上部へ放水案内する内放水皿6と、傾斜皿縁5を有する外放水皿7を設け、これら内放水皿6の皿縁4と外放水皿7の傾斜皿縁5間の皿間隔部8上に、刈刃カバー1下面に形成の環状の案内突条部9をのぞませて設け、前記傾斜皿縁5の放水端縁40を、前記案内突条部9の外周側高位置に延長させて刈刃カバー1の下面に接近させて設けたことを特徴とするモーアデッキの洗浄装置の構成とする。【選択図】図1
