DEVICE TO CONTROL MOTION OF DRAGLINE EXCAVATOR BUCKET Russian patent published in 2012 - IPC E02F3/48 B66D1/52 G05D15/00 

FIELD: construction.

SUBSTANCE: device to control motion of a dragline excavator bucket comprises engines of lifting and traction hoists, sensors of lifting and traction rope tension. Besides, the device comprises the first controller of lifting rope tension, the first unit of extraction of a control signal for a lifting hoist, and also the second controller of lifting rope tension and the second unit of extraction of a control signal for a lifting hoist. At the same time outputs of the rope tension sensor and setter are connected to inputs of the first tension controller of the lifting rope. The first input of the first unit of extraction of a control signal for a lifting hoist engine is connected to an output of the first controller of lifting rope tension, and the output of this unit is connected to the input of a DC generator of a lifting hoist drive. Besides, the first input of the second controller of lifting rope tension is connected to the output of the lifting rope tension sensor, and the second one - to the output of the traction rope tension sensor via a non-linear element. Besides, outputs of the second lifting rope tension controller and lifting hoist engine current controller are connected to the inputs of the second unit of control signal extraction. And the output of the second unit of control signal extraction is connected to the second input of the first unit of extraction of a control signal for a lifting hoist engine.

EFFECT: improved reliability and durability of working equipment.

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