FIELD: mining.
SUBSTANCE: present invention pertains to equipment used in mining for excavation and earth movement, more specifically to control of mine excavators using electrical actuation. The method involves, in excavation mode, limiting of the current to the turning motor armature to a threshold value of the control signal, equal to 20-30% of the shutoff current value. The state of the excavation mode is established from readings of sensors for length of cables, stroke length of lift arms, and sensor for actuating lift and the current to the turning motor armature is automatically limited. Proposal is also given of a device for implementing this method.
EFFECT: reduction of dynamic lateral loads on the working equipment of the mining excavator, which lead to fatigue accumulation in stress concentration zones in metal and fatigue flaking.
2 cl, 2 dwg
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