MQ300t portal crane, which has the largest rated capacity and the largest moment of force so far in domestic, is cylinder portal crane used for shipping building.
This machine adopts large carrying capacity slewing bearing, its diameter is 4, 670mm. The body adopts simply cylinder frame, not only concise and beautiful but also saving steels. This machine has smaller windward area, stronger wind resistance compared with traditional portal crane and every unit can save steels more than 300t.
Electrical design adopts American AB frequency control of motor speed technology, PLC control technology, graphic terminal display technology, network communication technology and load balancing control technique, the machine has the function of stepless speed regulating, fault monitoring, error recording and etc. Thus enhance the security, stability and reliability of the whole machine. Because of the higher security, stability and reliability, it is suitable for shipyard, wharf and port.