Patent RU 176269. The three-tier hidraulic crane-manipulator

The patent relates to the field of lifting and transport engineering, namely to the structures of hydraulic cranes, mounted on the base vehicle and designed to perform loading and unloading, construction, transport and storage works. Three-tier hydraulic crane-manipulator consisting of a base fixed to the frame of the vehicle support structure, the rotatable columns, the arrows, the handle attached to the end of the gripping body and the nodes of the hinged connection of the ends of adjacent units in a single kinematic chain. It differs in that a cylindrical shell is fixed to the end section of the link closest to the support structure, hermetically closed from both ends by end caps with Central cylindrical holes, inside which, at an equal angular distance, three radially located partitions are fixed to the wall of the shell, on both sides of which in the wall of the shell, through holes are made for the installation of fittings for the connection of pipelines of the supply of working fluid from the hydraulic system of the crane, and the rotor is installed in the form of a shaft, the ends of which are brought out of the shell through the Central holes of the end caps and have spline grooves, and to the Central cylindrical part of the rotor are fixed at an equal angular distance three radially spaced blades, and in the gaps between the partitions and the rotor and between the blades and the wall of the shell seals are installed, and at the ends of the rotor with holes with slot projections are worn clamps, fixed to the side surfaces of the adjacent link of the crane-manipulator. As a variant of the design, four radially located partitions are attached to the wall of the shell at an equal angular distance, and four radially located blades are fixed to the Central cylindrical part of the rotor at an equal angular distance. As an option, the shell is attached to the wall at an equal angular distance of five radially arranged partitions, and to the Central cylindrical part of the rotor, five radially arranged blades are fixed at an equal angular distance