| 摘要 |
FIELD: mechanical engineering; load-lifting cranes. ^ SUBSTANCE: invention relates to overload and damage protection of load-lifting cranes. According to proposed method, to prevent emergencies preliminarily determined are tolerable values of parameters characterizing load, and/or spatial position of crane boom and/or load gripping member which are memorized and, in process of operation of crane, one of said parameters is measured and compared with tolerable value, and signals are formed to control crane actuators aimed at preventing excess of tolerable value by measured parameter. Determination of parameters characterizing spatial position of boom, load-gripping member, supports, construction members of other crane or any obstacle in height is based on measuring values of barometric pressure in corresponding points and subsequent calculation of heights. Construction is simplifier, and effective protection of spatial position pickups of crane from mechanical damages if provided. Safety of load-lifting crane in operation is improved owing to accurate and effective measuring of distance between crane and obstacles and prevention of emergencies caused by tilting of fixed platform or portal of crane from horizontal position and in case of approaching thunderstorm. ^ EFFECT: improved safety of load-lifting crane. ^ 25 cl, 1 dwg |
