 High security electricity control system
1)Hoisting system is controlled by double-feedback system. The speed signal transmits back to FI and PLC to ensure the hoisting security.
2) All the connections are used high-current plugs with signals to avoid mispluging.
3) The slewing control modules are developed by LINDE COMASA (Spain) and could avoid the driver from danger in case of misoperation.
4) The tower crane is with real-time display safety monitoring device which records the real time data of the tower crane, and the device could be tel-controlld and bring black box function into play. The electrical design of CJ series tower cranes accords with the CE standards.
Slow positoning function
The lates generation fo frequency-controlled drive system for hoist and trolley movements can be fitted on the Flat-Top tower cranes to provide step-less, smooth and accurate placing of all loads. The “positioning mode” also allows extremely slow speeds and extra-accurate placing of loads.
Automatic changing for two trolleys
All CJ Flat-Top tower cranes have a reeving system with two trolleys, which improves their load chart in two different ways. Changeover from two trolley or vice-versa is done by remote control from the cabin, which would save traditional ground operating labors and correspondent costs.
Other improtant advantages
1)Fast, simple and safe erection of small, light individual modules.
2)Excellent choice for narrow sites in the city as there is no need to pre-assemble the whole jib on the ground.
3)Stable funcion of Frequency Inverters and other electrical control systems for 3 main mechanism, and easy and convenient self repair and maintenance for the clients.
4)Twice ball blasting and twice painting for steel structure surface of CJ tower cranes, the hot-dip galvanizing process is used on the handrails, and the time limit of the galvanized quality assurance is 50 years.
5)Good at endurance, adapting to atrocious weather like higher of lower temperature, acid rain and typhoon. |