| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pole structure for firmly connecting poles of different metals to each other with good work efficiency while preventing electric corrosion. <P>SOLUTION: This pole structure includes: an aluminum-made pole 1 having a hollow part circular in a top view; a steel or stainless-steel made reinforcement 2 disposed in the hollow part of the pole, having the outer peripheral part circular in a top view and anti-corrosion treated; and an engagement part 3 locked on the pole 1 and the reinforcement 2. The component wall of the hollow part has a plurality of recessed parts 4 having a tapered surface 5 inclined in the circumferential direction and connected in the longitudinal direction at designated intervals in the circumferential direction. A plurality of aluminum alloy materials or hard insulating materials constituting a projected part 6 having a taper surface 7 inclined in the circumferential direction are fixed to the outer peripheral part of the reinforcement 2. The tapered parts 5 and 7 are moved to the fitting position of the recessed and projected parts 4, 6 to stop rotation of the pole 1 and the reinforcement 2 with the engagement part 3. <P>COPYRIGHT: (C)2004,JPO |
