HYDRAULIC DRIVE OF TRAILING SCRAPER WORKING EQUIPMENT Russian patent published in 2004 - IPC

FIELD: earth moving machinery; scrapers.

SUBSTANCE: proposed hydraulic drive of trailing scraper working equipment includes pump, hydraulic tank, hydraulic cylinders of bucket, front gate, rear wall, all being connected with hydraulic distributor, pressure valves and spool. Hydraulic drive is furnished additionally with traction booster hydraulic cylinder connected with hydraulic distributor. Pressure valves are made for maintaining pressure in traction booster hydraulic cylinder whose working space is connected with inlet line of hydraulically controlled spool whose control chamber communicates with rod space of rear wall hydraulic cylinder. Each outlet line of hydraulically controlled spool is connected with inputs of pressure valves and their outputs are connected with drain space of traction booster hydraulic cylinder.

EFFECT: increased production rate of scraper.

2 dwg