Overhead Crane for Power Plant
During the construction of the power plant began installing generator unit, large generator unit need two bridge cranes of power plant to lift generator stator, generally exceed the rated lifting capacity of the cranes, each bridge of the bridge crane need to be reinforced, the two cranes with parallel control, and lift the generator stator at the same time for installation. The rest of the time, power plant crane do some maintenance, lifting and handling of some electrical equipment, with infrequent use, low working level, as A3.
Power plant crane traveling and hoisting mechanism should adopt frequency control system, PLC control system. Crane trolley and hoisting mechanism are all with safe and reliable braking systems, end travel limit device and buffer device. Anti-collision device is also provided between the cranes.
Power plant crane main hook and auxiliary hook can work simultaneously, and auxiliary hook should be coordinated work with the main hook for tipping or flipping the lifting object. Hook material of high quality carbon steel forging, and with heat treatment and non-destructive testing, metallurgical analysis, there is safety device to prevent rope falling off. Wire rope length at minimum limit position, the rope also left enough safe laps of not less than three laps on the reel.
Power plant crane using centralized lubrication system, no oil leakage. Set with intercom communication system, thermal insulation control room, setting cold and warm air conditioning.
Electrical safety control system
Short circuit protection, ground protection, overcurrent protection, no-voltage protection, zero protection, rising limit protection, travel limit protection, emergency power-off protection, overload protection, etc.