PROBLEM TO BE SOLVED: To perform a control in which the operation time of a control valve of an actuator is extended when a machine body is inclined at a set angle or larger because the planting depth of seedlings is unstabilized all the more when the planting depth of a planting unit is changed whenever a projection or recess is present in a field.SOLUTION: The transplanter includes: the planting unit 5 with a planting device 4 for planting seedlings, which is disposed at a rear part of a travelling vehicle body 8 and the actuator 9 for lifting the planting unit 5. The transplanter is configured to control the planting and lifting to lift the planting unit 5 to retain the planting depth of seedlings at a prescribed depth by switching the control valve 10 of the actuator 9 with the vertical swing of a center float 1. The transplanter also has an inclination sensor 11 mounted in the travelling vehicle body 8, and performs the control in which the response time from the detection of a value through the output operation of the control valve 10 is extended when the inclination sensor 11 detects the inclination of a set value or larger in the longitudinal direction of the travelling vehicle body 8.COPYRIGHT: (C)2012,JPO&INPIT【課題】圃場に凹凸がある度に植付部の植付深さが変更されると、かえって苗の植付深さが不安定になるため、機体が設定値以上傾斜するとアクチュエータの制御弁の作動時間が長くなる制御を行なう。【解決手段】苗を圃場に植え付ける植付装置4を備えた植付部5を走行車体8の後部に設け、植付部5を昇降させるアクチュエータ9を設け、センタフロート1の上下揺動によってアクチュエータ9の制御弁10を切り替えて植付部5を昇降させ、苗の植付深さを所定深さに維持する植付昇降制御可能に構成した苗移植機において、走行車体8に傾斜センサ11を設け、傾斜センサ11が検知する走行車体8の前後方向の設定値以上の傾斜を検出するとこの検出値から制御弁10を出力作動するまでの間の応答時間を長くする制御を行なう構成とする。【選択図】 図5
