PROBLEM TO BE SOLVED: To provide a cutting wire attachment device that may be easily attached to a tree and may prevent the wire from coming off the tree during towing.SOLUTION: A cutting wire attachment device 1 comprises a wire attachment unit 2 attached to the outer periphery of a tree W trunk, and an installation rod 3 for attaching the wire attachment unit 2 to an upper section of the tree W trunk. The wire attachment unit 2 has a main body 21 which is curved in an arc shape to form an opening 211 for attachment to the outer periphery of the tree W trunk, and the opening 211 is opened and closed by movement of an opening and closing member 22 due to rotation of the installation rod 3 about a rotation axis.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】 樹木への装着が簡単で、かつ、牽引中にワイヤが樹木から外れてしまうのを防ぐことが可能な伐採用ワイヤ取付け装置を提供する。【解決手段】 伐採用ワイヤ取付け装置1は、樹木Wの幹の外周に装着されるワイヤ取付けユニット2と、ワイヤ取付けユニット2を樹木Wの幹の上部へ装着するための設置棒3とを備える。ワイヤ取付けユニット2は、円弧状に湾曲させて樹木Wの幹の外周へ装着するための開口部211を形成した本体部21を有し、開口部211は、設置棒3を軸回りで回転させることによって開閉部材22が移動することにより開閉される。【選択図】 図1