CROSSARM Russian patent published in 2019 - IPC B66C1/12 

FIELD: lifting device.

SUBSTANCE: invention relates to hoisting and reloading devices for transfer and mounting-docking operations. Cross beam comprises bearing beam with balancing sockets of slings with rigging assemblies and inclination angle changing device, and also comprises device for depreciation with earring. Device for depreciation is made in the form of rollers, on each of which a spring is installed, which is made by twisting of spring tape into spiral, which creates constant driving force, which counteracts its unwinding. Each roller is arranged in the housing on the axis with the possibility of free rotation by an angle limited by the stop installed on this roller and interacting with the housing in extreme positions, such that during unwinding of all springs, a multilayer tape is formed, connected to a device for changing the inclination angle, the driving force of which is equal to the weight perceived by it.

EFFECT: excluding deformation of article after its fixation in place of functioning.

1 cl, 2 dwg