PROBLEM TO BE SOLVED: To provide a travelling sprayer which can stably apply a granular material (fertilizer) from a delivery roll in a stable state in interlock with a vehicle speed.SOLUTION: When a delivery roll for delivering a fertilizer of a granule-applying device is driven with a driving motor to spray the fertilizer to a field, and when the rotation speed of the delivery roll is interlocked with a vehicle speed and the rotation speed of the driving motor of the delivery roll exceeds a set upper limit, a controller disposed in the travelling sprayer controls so that the vehicle speed can automatically be reduced within a controllable rotation speed range of the driving motor. Therefore, the travelling sprayer can uniformly spray the fertilizer in a pre-set spray state. Also, when the rotation speed of the driving motor of the delivery roll exceeds the set upper limit, the controller automatically reduces the vehicle speed into the controllable rotation speed range of the driving motor. Thereby, an operator can immediately recognize that a working speed is beyond the controllable rotation speed range of the driving motor, and has an advantage of quickly dealing with the situation.COPYRIGHT: (C)2011,JPO&INPIT【課題】車速に連動して、しかも安定した状態で繰出ロールから粒状物(肥料)を散布することができる走行散布機を提供する。【解決手段】粉粒体散布装置の肥料を繰り出す繰出ロールを駆動モータで駆動させて圃場に肥料を散布するとき、繰出ロールの回転数を車速に連動させ、かつ繰出ロールの駆動モータの回転数が設定上限値を超えた場合、自動的に車速を減速し、駆動モータの制御可能な回転数の範囲内に入るように制御する制御装置を備えた走行散布機であるので設定した通りに均一に肥料散布できる。また、繰出ロールの駆動モータの回転数が設定上限値を超えた場合、自動的に車速を減速し、駆動モータの制御可能な回転数の範囲内に入るので、オペレータはすぐに駆動モータの制御可能な回転数の領域外の作業速にあったことを認識できるので、すばやく対処できるメリットがある。【選択図】図16
