SCRAPER Russian patent published in 2006 - IPC E02F3/64 

FIELD: construction and mining industry.

SUBSTANCE: invention relates to earth-moving equipment, namely, to scrapers used at earth-moving and overburden operations. According to invention, hydraulic cylinders of rear bucket lifting-lowering hydraulic mechanism are hinge-connected at one side to eyes on traction frame and at other side, to bucket eyes from side of rear wall. Intermediate frame is hinge-mounted at one side in bucket eyes and at other side is connected to arms of bell-cranks hinge-mounted on rear axle. Two additional hydraulic cylinders are hinge-mounted between eyes on traction on traction frame and upper arms of bell-cranks. Moreover, additional hydraulic cylinders and hydraulic cylinders of rear lifting-lowering mechanism of bucket are installed for alternative connection to hydraulic system of scraper or hydraulic system of hydraulic accumulators arranged on scraper, and diameters of holes to pass hydraulic fluid in pipelines and distributors in drain main line from rod spaces of hydraulic cylinders of rear bucket lifting-lowering hydraulic mechanism are made to provide lowering of rear part of bucket, when it is connected to hydraulic accumulators, at acceleration equal to free fall acceleration.

EFFECT: improved efficiency of operation of scraper.

5 dwg