BUCKET ANGLE CONTROL METHOD FOR HYDRAULIC SHOVEL

摘要

PURPOSE: To automatically release a bucket angle constant control which maintains the bucket position of a hydraulic shovel. CONSTITUTION: In a bucket angle constant operation to prevent load collapse during loading by controlling a bucket angleθbk of a bucket opening surface relative to horizontal plane at a constant, when the bucket angleθbk is larger than a preset constant reference valueθbkset, it is judged by a controller that a bucket 15bk is under digging condition. Then the bucket angle constant control is released temporarily and automatically for manual digging.