Variable bracket for bus=bar point support in underground traffic systems - has swivel arm equipped with three joints fixed at mounting plate provided with holes for roof fixing in circular or rectangular tunnel cross=sections

摘要

The joint pins are formed from expanding conical sleeves and the joint hubs from cylindrical sockets. A quick continuous line up to specified mounting positions is ensured. The expanding conical sleeves are self locking. USE/ADVANTAGE - Underground and metropolitan railway tunnels with large roof distances. Reduces installation and adjustment costs compared with suspension post cantilever. Following clamping by means of screw, joint is secured without requiring service.