TWO-LINE HYDRAULIC DRIVE OF BUCKET EXCAVATOR Russian patent published in 2008 - IPC E02F9/22 

FIELD: building.

SUBSTANCE: invention concerns open pit, building, road and loading machines, in particular bucket excavators. The two-line hydraulic drive of a bucket excavator includes two pumps connected with flowing channels of the multi spool-type hydro distributor, directed towards each other, including the monoblock case and sliding valves of hydraulic engines management of working bodies, the return and bypass relief valves, pressure-tight and drain hydro lines. There are mortises in the hydro distributor case with bushes for placing sliding valves established inside, having channels, crosspieces arranged therebetween and apertures. There are borings executed in case mortises which length is equal to the total length of three central channels and two crosspieces between them.

EFFECT: reduction of dimensions of the hydro distributor case, metal consumption reduction, decreased labour iousness, improvement of functionality due to reduction of resistance of a liquid stream.

5 dwg