CONTROLLED SCRAPER KNIFE SYSTEM Russian patent published in 2019 - IPC E02F3/64 E02F3/65 

FIELD: machine building.

SUBSTANCE: invention relates to earthmover-transporting machines, in particular to blade scrapper systems. Scraper blade control system includes a ladle with a front controlled gate, a stepped blade system with a foot plate and cutting knives, scoop cutting tool rigidly installed in the center of the front controlled flap of the ladle, equipped with front and rear controlled fixtures, the drive of which is introduced on the front surface front flap, side walls of scoop cutting tool with undercutting knives and base, on lower surface of which there are support projections for interaction with stepped blade system. In stepped blade system through grooves are made and stops are mounted on its lower surface. Base of scoop cutting tool is equipped with hollow ledges for interaction with through slots of stepped blade system. Inside the hollow ledge there is a rotary fixture equipped with a drive and interacting with a stop on the lower surface of the stepped blade system, and hollow ledges themselves are arranged in plane of side walls and cutting knives of scoop cutting body.

EFFECT: reduced material consumption, simplified design and increased serviceability of the device for temporary fixation of a scoop cutting tool to a foot plate.

1 cl, 6 dwg