PROBLEM TO BE SOLVED: To provide a seedling transplant device of a seedling transplanter capable of preventing occurence of a section in which a seedling is not planted by notifying of a state in which a seedling cannot be raked out due to mixed objects such as a soil or stone intruding into a planting device.SOLUTION: The seedling transplanter is mounted with a seedling planting part 6, at a rear part of a travel vehicle body 1, the seedling planting part comprising: a seedling tank 3 storing a mat seedling and feeding out the mat seedling to a seedling take-out port 2 and a seedling planting device 5 formed with a planting jaw 4 separating and holding a seedling fed out to the seedling taking-out port 2 and planting the seedling on a soil surface. The planting device 5 includes a seedling jamming sensor 7 capable of detecting a jamming state of a seedling separated and held between electrodes of right/left planting jaws 4, the planting jaws 4 branched into a right/left biforked state and serving as the electrodes. In a sensor circuit 8 of the seedling jamming sensor 7, a rotation sensor 9 is arranged which actuates the seedling jamming sensor 7 by means of a rotation centrifugal action of the planting device 5.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2016,JPO&INPIT【課題】 植付装置に土や石等の夾雑物が入り込み、苗を掻き取れない状態になったことを報知し、なえが植え付けられない区間の発生を防止できる苗移植機の苗移植装置を提供する。【解決手段】 走行車体1の後部に、マット苗を収容して苗取出口2部へ繰出す苗タンク3と、この苗取出口2部に繰出された苗を分離保持して土壌面へ植付ける植付爪4を形成の植付装置5とからなる苗植付部6を装着した苗移植機において、植付装置5は、左右二又状形態に分岐する植付爪4を電極として、これら左右の植付爪4の電極間に分離保持される苗詰り状態を検出可能の苗詰まりセンサ7を構成し、苗詰まりセンサ7のセンサ回路8には、植付装置5の回転遠心作用によってこの苗詰まりセンサ7を作動させる回転センサ9を設ける構成とする。【選択図】 図5
