PROBLEM TO BE SOLVED: To solve the problems wherein the weight as a transplanting device is heavy, and friction resistance and seedling disorder are sometimes caused by the constant approach of an outer periphery part of a transplanting case to the soil face to enlarge a contact area with the soil face, a transplanting seedling or the like in a seedling-transplanting device in a rotary shape for carrying out the seedling transplantation by rotating two or more transplantation arms having transplanting needles and transplanting tines and arranged at an angle divided to three parts.SOLUTION: The seedling-planting device for a seedling transplanter is constituted as follows. Each transplanting arm 5 having the transplanting needle and the transplanting tine 4 is axially installed around an arm shaft 6 so as to be bent and stretched, and turned at the position of the angle nearly equally divided to three angles around a case shaft 2 of the rotary center of the seedling-transplanting case 1. A shaft-receiving case part 7 at the outer periphery of each arm shaft 6 of the seedling-transplanting case 1 is protruded in a three-forked shape or protruded to the outer periphery from the rotary locus of the arm shaft 6 around the rotary shaft 2, and a case space part 8 between each shaft-receiving case part 7 is recessed.COPYRIGHT: (C)2007,JPO&INPIT【課題】 植付針や植付爪を有した植付アームを三等分角の配置に複数配置して回転しながら苗植付を行うロータリ形態の苗植付装置では、植付装置としての重量が大きくなり、植付ケースの外周部が常時土壌面に接近して、土壌面や植付苗等との接触面積も多くなって、摩擦抵抗や、苗乱れを生じ易い。【解決手段】 苗植ケース(1)の回転中心のケース軸(2)周りの略三等分角位置に、植付針(3)と植付爪(4)を有した各植付アーム(5)を、このアーム軸(6)周りに屈伸回動可能に軸装し、この苗植ケース(1)の各アーム軸(6)外周の軸受ケース部(7)を、三叉状に突出するか、乃至はこのアーム軸(6)の回転中心軸(2)周りの回転軌跡よりも外周に突出させると共に、これら各軸受ケース部(7)間のケース間隔部(8)を窪ませたことを特徴とする苗植機の苗植付装置の構成とする。【選択図】 図1
