WORKING BOYD OF DRAGLINE EXCAVATOR Russian patent published in 2023 - IPC E02F3/48 E02F3/60 

FIELD: earth-moving construction; mining machines.

SUBSTANCE: invention is related to excavators with dragline type working equipment. The working body of the dragline excavator includes a bucket with side and rear walls, a bottom with a cutting knife and a shutter pivotally attached to the bucket, a harness containing lifting and hauling ropes, a flexible rod connected at one end to the lifting rope and at the other end to a transverse plate. The working body is equipped with a damper drive hydraulic cylinder and a traction hydraulic cylinder, a hydraulic accumulator and an adjustable reducing hydraulic valve. The damper is made convex towards the direction of movement of the bucket with levers and a transverse plate in its upper part and is pivotally connected to the rod of the hydraulic cylinder of the damper drive, mounted pivotally on the transverse rack of the bucket and connected by a piston cavity with a hydraulic accumulator, and the rod cavity is connected to the rod cavity of the traction hydraulic cylinder installed between the traction rope and the bucket. The rods of the hydraulic cylinders are enclosed in flexible sealed corrugated shells filled with working fluid, and the shell of the traction hydraulic cylinder is in communication with its rod end. The hydraulic accumulator is connected to an adjustable pressure reducing valve.

EFFECT: improved performance.

1 cl, 3 dwg