PROBLEM TO BE SOLVED: To provide a conveyor for raising seedling boxes structured so that a plurality of endless conveyor belts are placed in a direction orthogonal to a raising seedling box-conveying direction at prescribed intervals and are supported on conveyor frames to be freely driven and turnable, the raising seedling boxes are received by a plurality of endless conveyor belts from below to be conveyed, and thus the endless conveyor belts are inexpensively prevented from sagging and exert excellent durability.SOLUTION: The conveyor for raising seedling boxes is structured as follows: a supporting means 80 receiving and supporting the approaching sides of the endless conveyor belts 12, 24, 33 from below comprises a support axis 82 fixed to conveyor frames 11, 21, 32 along a direction orthogonal to the raising seedling box-conveying direction, and a cylinder 83 which is received by a plurality of endless conveyor belts 12, 24, 33 while being engaged with the support axis 82 from outside to be freely rotatable and supported on the support axis 82 to be freely rotatable and the cylinder 83 is engaged with the support axis 82 from outside in the condition that the inner peripheral surface of the cylinder 83 comes in directly contact with the outer peripheral surface of the support axis 82.COPYRIGHT: (C)2011,JPO&INPIT【課題】複数本の無端コンベヤベルトが育苗箱搬送方向と直交する方向に所定間隔を隔てて並んでコンベヤフレームに駆動回動自在に支持されて、複数本の無端コンベヤベルトによって育苗箱を下方から受け止めて搬送する育苗箱コンベヤにおいて、無端コンベヤベルトの垂れ下がりを安価に防止できるとともに優れた耐久性を発揮させる。【解決手段】無端コンベヤベルト12,24,33の往路側を下方から受け止め支持する支持手段80を、コンベヤフレーム11,21,32に育苗箱搬送方向と直交する方向に沿わせて固定された支軸82と、支軸82に回転自在に外嵌して支軸82に回転自在に支持されながら複数本の無端コンベヤベルト12,24,33に受け止め作用する円筒体83とを備えて構成してある。円筒体83を、この円筒体83の内周面が支軸82の外周面に直接に接触する状態で支軸82に外嵌するよう構成してある。【選択図】図5
