FIELD: transport.
SUBSTANCE: invention relates to jib crane load limiter incorporated with crane control and protection systems on cranes with detachable or movable counterweight. Said limiter comprises transducers mounted on the carne to measure load describing parametres, spatial position of crane jib and/or grippe and spatial position of counterweight. Said limiter comprises actuator and digital computer connected thereto. Said computer allows receipt and processing transducer output signals and determining crane current load, comparing current load and maximum tolerable load loaded into limiter memory device, and generating preventive signal and/or transmitting to crane motion interlocking signal to actuator to prevent crane overload. Said limiter comprises transducer of counterweight spatial position representing a transducer of availability and/or spatial position of several weights of detachable or movable counterweight on counterweight cantilever or on crane rotary platform. Limiter digital computer allows receipt and processing transducer output signals and determining crane current load, comparing current load and maximum tolerable load loaded into limiter memory device, and generating preventive signal and/or transmitting to crane motion interlocking signal to actuator to prevent crane overload.
EFFECT: higher safety and reliability of crane operation.
14 cl, 1 dwg
