| 摘要 |
FIELD: mechanics. ^ SUBSTANCE: invention is related to the field of portal cranes with a set of elevators. To control the lift system, load distribution is determined by two holders (12, 16), lift units (20a-20f) and load connectors (34) are grouped so as for the center of gravity to fall on one group, located between the two groups, within the groups, forming a design load for each group, increasing the design load stepwise up to the design load. They check the lift system for safety, tension, movement and speed of each cable, the load imbalance. The lift system includes a number of independent units of lift drums (20a-20f) located on the two spaced holders (12, 16), load beams, cargo (L) and a cargo connector (34). The cargo connector (34) is linked to the lift drum (20a-20f) with a cable (28). The cargo synchronises the lift drums (20a-20f). Installation of marine and coastal structures is carried out. ^ EFFECT: increased operation efficiency. ^ 7 cl, 11 dwg |
