PIPE-LAYING CRANE Russian patent published in 2016 - IPC F16L1/00 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely to equipment for construction of pipelines. Pipe-laying crane includes a frame, caterpillar trucks, a boom, a mechanism regulating the boom pitch angle made in the form of a hydraulic cylinder, a lifting mechanism made in the form of a rope tackle with a hydraulic drum winch, a counterweight, according to invention the hydraulic cylinder regulating the boom pitch angle, hinged on the tractor frame is articulated with a spatial crank fixed on the tractor frame and is articulated with the boom by means of a rod, herewith the second hinge of the rod is closed to the boom head section.

EFFECT: technical result of the invention is achieved owing to the use of a piston cavity of the boom hydraulic cylinder and additional lever transmissions.

1 cl, 3 dwg