Four arm concrete distributor articulated jib - has long and short arms nesting together when collapsed for transport

摘要

The four armed concrete distributor articulated jib has a rotating column with connection to the first distribution arm. The second arm has a hydraulic drive for the second connected distribution arm. The third and fourth distributor arms are fitted between the first and second arms. The connecting third and fourth arms are held so that in the folded position the arm third is arranged over the arm (2) and the fourth arm is held over the third arm forming a parallel collapsed system ready for transport. The second arm has a cable (17) for actuating the pivoted connection (6).