PROBLEM TO BE SOLVED: To solve a problem that time and effort are required for adjustment work and operation of planting work is complicated, because the height positions of non-operational positions of a planting operation machine is manually adjusted with a dial operation tool, and it is necessary to manually adjust the height positions of working positions each time on the basis of the travelling speed.SOLUTION: A transplanter includes a controller 30 which conducts, with an actuator, lift control of a planting working unit 6 connected to a rear part of a travelling machine body 3. The controller 30 starts automatic lift control to lower the planting working unit 6 from a non-working position to a working position corresponding to complete of a swivel operation after the planting working unit 6 is raised to the non-working position, which is conducted in response to start of the swivel operation, the automatic lift control being started in response to detection of a steering operation or action by detection means. The transplanter includes vehicle speed detection means 32 to detect vehicle speed. The controller 30 conducts the automatic lift control so that the non-working position, when the vehicle speed detected by the vehicle speed detection means 32 is in a high speed range, is at a position lower than a non-working position when the speed is at a low speed range.COPYRIGHT: (C)2014,JPO&INPIT【課題】植付作業機の非作業位置の高さ位置をダイヤル操作具によって手動で調整するため、非作業位置の高さ位置を走行速度に応じて毎回手動で調整する必要があるため、調整作業に手間が掛かるとともに、植付作業時の操作が煩雑になるという課題がある。【解決手段】走行機体3の後部に連結された植付作業機6の昇降制御をアクチュエータによって行う制御部30を備え、該制御部30は、機体の旋回の開始に対応させて植付作業機6を非作業位置まで上昇させた後に該旋回の終了に対応させて非作業位置の植付作業機6を作業位置まで下降させる自動昇降制御を、ステアリング操作又は作動が検出手段によって検出されたことに起因して、開始させる移植機において、車速を検出する車速検出手段32を設け、制御部30は、車速検出手段32によって検出された車速が高速の場合の非作業位置が、低速の場合の非作業位置よりも低くなるように上記自動昇降制御を実行する。【選択図】図9
