PROBLEM TO BE SOLVED: To provide a tree trimming device which can be easily assembled, which has a simple structure, and which allows a remote work at a safe place separated from a tree trimming position for securing safety of an operator.SOLUTION: A tree trimming device comprises a chain saw stationary plate support body for supporting a chain saw stationary plate for fixing a chain saw rotatably in a horizontal direction and fixing the chain saw stationary plate to a tree, the chain saw stationary plate 2 comprises an insertion member 8 whose cross section is a circular shape and which inserts the chain saw stationary plate 2 into the chain saw stationary plate support body 3 vertically in a rotatable state, and a rope engagement member 10 to which a rope for rotating the chain saw stationary plate is engaged. The chain saw stationary plate support body 3 comprises a cylinder 11 for rotatably supporting the insertion member 8, and a tree fixing member 12 for fixing the chain saw stationary plate support body 3 to a tree. The device further comprises a coil spring 15 for energizing the chain saw stationary plate 2 rotated from a standby position by pulling the rope, to a direction returning to the standby position by loosening the rope.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】シンプルな構造で簡単に組み立てることができるとともに、作業員の安全を確保するため、伐採位置から離れた安全な場所で遠隔作業ができる立木の伐採装置を提供【解決手段】チェーンソーを固定するチェーンソー固定板を水平方向に回転自在に支持するとともに、立木に固定するチェーンソー固定板支持体とからなり、チェーンソー固定板２は、チェーンソー固定板２をチェーンソー固定板支持体３に回動自在に垂直に挿入する横断面円形の挿入部材８と、チェーンソー固定板を回動させるためのロープを係止するロープ係止部材１０を備え、チェーンソー固定板支持体３は、挿入部材８を回動自在支持する円筒１１と、チェーンソー固定板支持体３を立木に固定する立木固定部材１２を備え、ロープを引いて待機位置から回動したチェーンソー固定板２を、ロープを緩めて待機位置に戻す方向に付勢するコイルばね１５を備えている伐採装置。【選択図】図１
