SCRAPER BUCKET Russian patent published in 2019 - IPC E02F3/64 E02F3/65 E02F9/22 

FIELD: machine building.

SUBSTANCE: invention relates to excavating equipment, namely, to scrapers. Scrap bucket comprises side and rear sliding walls, bottom with cutting blade, front gate with clamping in form of arc-shaped plate, installed with possibility of limited turn in ladle behind cutting blade and inside front gate, respectively, rear and front guide plates with spherical surfaces. Bucket is equipped with hydraulic cylinders of guide plates, hydraulic accumulator and adjustable reduction hydraulic valve. Front guide plate is installed on shaft and to its ends from external side sides of flap are attached levers with possibility of one-side communication with rods of hydraulic cylinders of clamping, connected by housings to side walls of shutter and communicated by piston chambers with hydraulic accumulator, which is communicated via controlled reduction hydraulic valve with pressure hydraulic line and through valve with hydraulic tank. Rear guide plate is installed on shaft, to ends of which from external sides of bucket side walls levers are attached with possibility of one-side communication with rods of hydraulic cylinders of clamp, connected with housings to side walls of bucket and rod cavities are equipped with springs, and piston cavities are communicated by hydraulic line with piston cavity of hydraulic cylinder of rear sliding wall drive. At that, hydraulic distributor of hydraulic cylinders of front gate is made as four-position with possibility of connection, in one of slide valve positions, of piston cavities of these hydraulic cylinders with piston cavity of hydraulic cylinder of rear pull-out wall.

EFFECT: higher efficiency and easier control of working process.

1 cl, 1 dwg