| 摘要 |
A spacing device for spacing individual conductors of an overhead transmission line includes a hub having at least two cavities each opening onto the hub periphery. Each cavity has an associated arm with a conductor clamp at one end and a knob at or adjacent the other end, the knob being received with clearance within a respective cavity to permit limited articulation of each arm with respect to the hub. An elastomeric bush substantially encircles the arm in the clearance gap between the knob and the cavity wall, and the cross-sectional shape of the bush on opposing sides of a maximum diameter portion of the knob is deformed by compression during assembly of the device such that each half of the bush has a greater degree of pre-compression at the centre of its cross-section that at the ends of its cross-section. |
