METHOD OF SETTING WORKING ZONE OF LOAD-LIFTING CRANE BY CRANE OPERATOR Russian patent published in 2006 - IPC B66C15/04 B66C23/88 

FIELD: mechanical engineering; load lifting.

SUBSTANCE: invention is designed for use in crane systems to prevent collision of load-lifting cranes with obstacles. Method provides change of spatial position of crane boom or load-gripping member, measuring of at least one coordinate of said positions, memorizing value of coordinate by first command of crane operator and forming working zone of crane with use of memorized value of said coordinate. After first command of crane operator when changing spatial position of boom or load grip-ping member of crane, values of said coordinate are memorized additionally through preset lapses of time or after change of said coordinate through preset value. Process of memorizing is stopped by second command from crane operator. Forming of working zone of crane is effected by calculating borders of zone with use of memorized values of coordinate. At calculations, closure of trajectory of displacement of boom or load-gripping member along at least one said coordinate is revealed. If trajectory closure is presents, working zone of crane is formed within the limits of changes of memorized values of coordinate. At no closure, working zone is formed as sector with center in axis of crane rotation and arc, in common case, curvilinear, whose coordinates do not exceed its maximum memorized values.

EFFECT: possibility of setting working zone of any form by crane operator, including three-dimensional one, taking into account sizes and type of hoisted load and near transmission lines, simplified work of crane operator and design of coordinate protection system.

16 cl, 4 dwg