| 摘要 |
A grab for underwater works comprises a head, a traverse, rods, jaws, in the cutting edges of which cavities are located with longitudinal through holes from external sides, and the jaws are equipped with nozzles, as well as a system of a closing pulley block and a hoist rope. On the head of grab cylinders are located which are equipped with check valves and pistons. The jaws are connected to the hydraulic cylinders by flexible and rigid pipes. The rods of hydraulic cylinders are connected to the rope of hoisting winch through an equalizing block. |
