CRANE ARM Russian patent published in 2022 - IPC B66C23/44 

FIELD: lifting and transport machines.

SUBSTANCE: invention relates to lifting and transport machines for loading and unloading operations. The crane-manipulator contains a base made in the form of a triangular truss, on which a articulated-rod boom, made in the form of articulated-rod trusses, is pivotally mounted with the possibility of rotation. Hinged-rod trusses that make up the boom structure have the form of rod triangles with flat trusses in the transverse direction. Two power hydraulic cylinders of the triangular base truss are located at an angle to each other. The hinge is mounted with trunnions on the front upper rod resting on the front supports of the tetrahedral truss, and at their bases, these two power hydraulic cylinders of the triangular truss are fixed by means of support-turning devices to the rigid crossbar of the base of the triangular truss. An articulated boom is a triangular connection of rods, at the base of two of which four power hydraulic cylinders are located in series and in pairs. The bases of the first two parallel hydraulic power cylinders are mounted in support-turning devices located on the front upper rod, which rests on the front supports of the tetrahedral truss, and their rods are sequentially connected by means of movable hinges with the bases of the other two parallel power hydraulic cylinders, the rods of which are attached by means of movable hinges on the crossbar, which is the end of the articulated boom. The rear supports of the tetrahedral truss are thickened and rest rigidly on pairs of paired struts. Pair spacers are made in the form of rods with the possibility of fastening on the vehicle.

EFFECT: maneuverability of the articulated boom and expansion of the service area in the horizontal and vertical planes of the crane-manipulator is provided.

1 cl, 2 dwg