| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the nesting behavior of birds, etc., to switch by fixing a nesting preventing tool through the use of an arm over the opening and closing device installed on a power pole. SOLUTION: The nesting preventing tool A is oppositely provided with projecting pieces 5 at the outer side of the divided end of a half cylinder 3 with a necessary length and consists of a pair of nesting preventing barriers 1 projecting many needle bar bodies 4 on the surface of the half cylinders 3, an inserting and holding tool 6 adhered to the half cylinder 3 to support the barrier 1 and a supporting arm 2 fixing the tool 6 to both ends of it. In addition the tool A is provided with an arm fixing frame 8 for fixing to the arm B fixed to the power pole at the lower surface of an intermediate part in the longitudinal direction of a supporting arm 2 and mounts the frame 8 to the arm B to install.</p> |
