PLANTING ARM

PROBLEM TO BE SOLVED: To provide a planting arm of a seedling planting device in which a weight of the planting arm is reduced and cost is reduced.SOLUTION: A planting claw 25 is connected to a support case 36, and a seedling extrusion tool 26 is supported to the support case 36 along the planting claw 25 in a reciprocating manner. A spring 29 for biasing the seedling extrusion tool 26 in the side projecting from the support case 36 and a drive mechanism 31 for drawing the extrusion tool 26 into the support case 36 against the spring 29 are provided in the inside of the support case 36. A lid part 37 is provided to be connected to the support case 36 for supporting the end of the spring 29 on a portion opposite to the planting claw 25 in the support case 36. The lid part 37 is formed of a synthetic resin while inserting a nut 50 for mounting a grease nipple to the lid part 37.SELECTED DRAWING: Figure 5 【課題】苗植付装置の植付アームにおいて、植付アームの軽量化及び低コスト化を図る。【解決手段】支持ケース３６に植付爪２５を連結し、植付爪２５に沿って往復動自在に苗押し出し具２６を支持ケース３６に支持する。苗押し出し具２６を支持ケース３６から突出する側に付勢するバネ２９と、バネ２９に抗して押し出し具２６を支持ケース３６に引き込む駆動機構３１とを、支持ケース３６の内部に備える。支持ケース３６における植付爪２５とは反対側の部分に、バネ２９の端部を支持するもので支持ケース３６に連結される蓋部３７を備える。蓋部３７にグリスニップル取付用のナット５０をインサートした状態で、蓋部３７を合成樹脂により成形する。【選択図】図５