PROBLEM TO BE SOLVED: To solve the problem of a sulky type seedling transplanter in respect of turning operability that in turning, an operator has to perform an on-off operation for the drive of a working device and an operation for the ascent/descent of the working device in addition to the turning and steering operation of a machine body so that the operator cannot concentrate on the steering operation in turning.SOLUTION: A seedling transplanter comprises, when a seedling transplanting work device is mounted on a traveling vehicle in a free elevation state, an automatic turning control function in which lifting the seedling transplanting work device and switching the ON and OFF of drive of the seedling transplanting work device is automatically performed in turning of machine body. A controller that performs the automatic turning control is provided in which vehicle speed is descended, the seedling transplanting work device is lifted, and travel distance calculation is started at the same time so that a command to descend the seedling transplanting work device according to the calculated travel distance is outputted, and then the vehicle speed is increased.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2016,JPO&INPIT【課題】 乗用型苗移植機において、旋回時に、操縦者は機体の旋回操向操作以外に、作業装置の駆動の入り切り操作や作業装置の上昇・下降操作をしなければならず、旋回時の操向操作に専念できず、未だ、旋回操作性の点において課題があった。【解決手段】 走行車両に苗移植作業装置を昇降自在に装着し、機体旋回時の苗移植作業装置の昇降及び苗移植作業装置の駆動の入切を自動的に行う自動旋回制御を備えた苗移植機において、車速を減速させ苗移植作業装置を上昇させると共に走行距離の算出を開始し、該走行距離に応じて、苗移植作業装置が下降する指令を出力し、その後、車速を増速させる自動旋回制御を行う制御装置を設けた。【選択図】 図8
