METHOD OF COUNTERBALANCING OF FORCES OF GRAVITY OF WORKING EQUIPMENT OF JIB MACHINES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC E02F9/22 

FIELD: machine building.

SUBSTANCE: operation of reduction of forces of gravity of working equipment with the rod of equalising cylinder is performed, the reduced force at the rod by gas pressure in the piston cavity is counterbalanced, and operation of stabilising of compressed gas pressure is performed. Meanwhile also the piston compressed gas cavity is sealed from atmosphere by means of connecting of variable volume of the rod hollow filled with greasing fluid, with the body of the deformed low pressure pneumocamera. The operation of pressure stabilising in the gas cavity is performed at the expense of increase of volume of high-pressure gas cavity. The device for counterbalancing of forces of gravity of working equipment of jib machines is offered which includes the equalising barrel and gas bottle. Meanwhile the equalising cylinder with a rod and piston are located inside the gas bottle body charged by compressed air. And the rod hollow of equalising cylinder is filled with lubricant fluid and is connected to the body, where the low pressure pneumocamera is installed. Meanwhile the piston and rod of equalising cylinder are made hollow.

EFFECT: lowering of load on the main hydraulic cylinders of the jib and on the engine shaft, and fuel consumption.

2 cl, 4 dwg