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Measurement: Real time measure the slewing angle of main jib, radius of trolley (angle of jib and radius of tip for luffing tower crane), hook height, load, wind and according to the hoisting weight calculating torque ratio. Indication: Real time indicates the slewing angle of main jib, radius of trolley (angle of jib and radius of tip for luffing tower crane), hook height, load, wind, rated load at present radius, percentage of actual load to rated load, main jib positions of nearby tower cranes, the position of trolley and so on. Alarm: Visual-audible pre-alarm (discontinuous buzzer and yellow column on monitor) when the load or radius reach pre set pre-alarm point (95%); Visual-audible alarm (continuous buzzer and red column on monitor) when the load or radius reach pre set alarm point (105%); when one set in the network go wrong, the alarm light at top of cabin (option) will give alarm. Moment Protection: According to the load information, allow or prohibit the hook upwards or trolley forwards. Include 3 contacts: hook upwards, trolley forwards (high speed, low speed). Anti-collision: According to the real time positions of tower cranes, allow or prohibit the movement of trolley and slewing. Include 11 contacts: 4 contacts for trolley (high speed forwards, low speed forward, high speed back wards, low speed back wards); 7 contacts for slewing (left high speed, left low speed, right high speed, right low speed, left inverse ejecting, right inverse ejecting, braking). Wireless Communication: Each controller could communicate wirelessly among tower cranes and accomplish anti-collision and zone protection. Each controller could be added or quit the network without effecting other tower cranes’ work. GPRS remote function: Global advanced communication technology of GPRS, the tower crane in real-time data uploaded to the Internet, the administrator can be password landing to the Internet for the tower crane working condition real-time monitoring.
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RC-A11 Tower Crane Anti-collision and Zone Protection
