Problem to be solved: to provide a pruning machine capable of preventing damage of the gear while preventing the elastic member from being damaged early.Solution: a gear 12, eccentric cams 13 and 14 for converting the rotation of the gear 12 to reciprocating motion of the blades 5 and 6, and a joint for rotating the eccentric cams 13 and 14 with the rotation of the gear 12 by inserting the proximal end of the base 12 into eccentric cams 13 and 14 and inserting the leading end into the gear The pins 15 and 15 are provided with elastic members 17 and 17 which are fitted in the gear 12 and are fitted in the gear 12, and are attached to the gear 12, and the connecting pins 15 and 15 penetrate the elastic member 17.A restriction member 18 having pin restricting holes 18a and 18a for restricting the deformation amount of 17 is provided, and the pin restricting holes 18a and 18a of the regulating member 18 are formed to be larger than the outer diameter of the connecting pins 15 and 15, and are smaller than the inner diameter of the through holes 16 and 16 of the gear 12.Diagram【課題】弾性部材が早期に破損しないようにしながらも、ギヤの破損を防止できる刈込み機を提供する。【解決手段】ギヤ12と、ギヤ12の回転をブレード5,6の往復運動に変換する偏心カム13,14と、基端部が偏心カム13,14に固定され先端部がギヤ12に挿通されることによりギヤ12の回転に伴い偏心カム13,14を回転運動させるための連結ピン15,15と、連結ピン15,15に外嵌されギヤ12に収納される弾性部材17,17と、を備え、ギヤ12に取り付けられ、連結ピン15,15が貫通して弾性部材17,17の変形量を規制するためのピン規制孔18A,18Aが形成された規制部材18を備え、規制部材18のピン規制孔18A,18Aが、連結ピン15,15の外径よりも大きく、かつ、ギヤ12の貫通孔16,16の内径よりも小さく形成されている。【選択図】図2
