FIELD: lifting and transportation mechanical engineering, namely system for ensuring safety of operation of lifting equipment; possible use for preventing dangerous approach of jib type cranes with telescopic crane arms to power lines.
SUBSTANCE: device for detection of electric field of power line contains an antenna and antenna amplifier, where at least a part of antenna is made in form of flat capacitor mounted on rotary device of crane, and current-conductive plates of flat capacitor are connected to input of antenna amplifier. Positioning of antenna in form of flat capacitor not on the head of crane arm, but on rotary device, ensures safety of crane operation during installation of fly jib, and also results in increased comfort of operation, particularly, low length of communication line and exclusion of drum for winding cable, removing causes for cable tearing under conditions of real applications.
EFFECT: increased efficiency.
2 cl, 4 dwg
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