DRAGLINE BUCKET EXCAVATION MOVEMENT CONTROL DEVICE Russian patent published in 2008 - IPC E02F9/20 

FIELD: mining.

SUBSTANCE: invention refers to the mining industry. The device consists of the elevator hoist and the pulling hoist motors controlled by the hoist speed control units, and the excavation route sensor which output is connected through the programmable drag cable pull-up setup unit to one of the drag cable pull-up control unit inputs. Another input of the drag cable pull-up control unit is connected to the drag cable pull-up sensor. The drag cable pull-up control unit output is connected to the first input of the elevator cable pull-up control unit; another elevator cable pull-up control unit input is connected to the elevator cable pull-up sensor. The elevator cable pull-up control unit output is connected to the elevator hoist speed control unit input. The device is equipped with the additional drag cable pull-up control unit with the programmable drag cable pull-up setup unit, which input is connected to the excavation route sensor output. The output of the latter and the output of the drag cable pull-up sensor are connected to the inputs of the additional drag cable pull-up control unit. The output of the additional drag cable pull-up control unit is connected to the drag hoist speed control unit input.

EFFECT: increase of accurate soil cutting depth adjustment by the dragline bucket.

2 dwg