PROBLEM TO BE SOLVED: To provide a seedling transplanting machine that automatically adjusts adequate planting depth of a seedling according to depth of field or hardness of soil and automatically adjusts and supplies adequate amount of fertilizer.SOLUTION: A seedling transplanting machine includes a traveling vehicle body 20 provided with a seedling tank 60a in a freely elevating/lowering manner, a seedling transplanting device 60b that transplants seedling, a fertilizing device 60c that supplies fertilizer, and a main transmission shaft 10 that transmits drive force to a traveling device 21 of the traveling vehicle body 20, and a suspension mechanism 130 formed of an upper case 110 that covers the main transmission shaft 10, a lower case 120 slidably and swingably provided to the upper case 110, and a spring 131 that absorbs upper/lower movements of the travelling device 21. The seedling transplanting machine is provided with an upper/lower movements detecting member 151, 155 that detects an amount of the upper/lower movements of the travelling device 21, and a control device 150 that elevates and lowers the seedling tank 60a in accordance with the amount of the upper/lower movements of the travelling device 21 detected by the upper/lower movements detecting member 151, 155.COPYRIGHT: (C)2015,JPO&INPIT【課題】圃場の深さや土質の硬軟に合わせて、適切な苗の植付深さの自動調節が行われると共に、適切な施肥量が自動調節供給される苗移植機を提供する。【解決手段】走行車体20に苗タンク60aを昇降自在に設け、苗を植え付ける苗植付装置60bを設け、肥料を供給する施肥装置60cを設け、走行車体20の走行装置21に駆動力を伝動する主伝動シャフト10を設け、主伝動シャフト10を覆う上部ケース110と、上部ケース110に摺動及び回動自在に設ける下部ケース120と、走行装置21の上下動を吸収するスプリング131とから構成するサスペンション機構130を備えた苗移植機において、走行装置21の上下動量を検知する上下動検知部材151,155を設け、上下動検知部材151,155が検知した走行装置21の上下動量に合わせて苗タンク60aを昇降させる制御装置150を設けて構成する。【選択図】図23
