Telescopic jib for cranes has linking arm, which holds telescopic arms and bracing, which is arranged on bracing rack along with anchor rope whereby bracing rack can be extended and retracted in direction perpendicular to rope movement

摘要

The telescopic jib (1) has a linking arm (3), which holds telescopic arms (4,5) and a bracing (6), which is arranged on a bracing rack (7) along with an anchor rope (8) that is supported on the bracing rack, which also supports jib arms (3,4,5). The bracing rack is made in form of a scissor-legged platform and extendable and retractable in a direction perpendicular to the rope movement.