QTZ400(TC7050)tower crane is a kind of super-sized tower crane which is desined by Gansu Construction Equipment Manufacturing Co,.Ltd. according to JG/T5037-1993(tower crane classification)standard.It applies to the construction of super high-rise building,large hydropower station, nuclear power station and bridge.
this crane is horizontal jib, a kind of upper rotation,self-climbing and double-trolley luffing,double-hook,and is a kind of upper rotating and self-climbing tower crane with inverter for multipurpose.Its standard jib length is 70 meters.max load is 25tons, max tip load is 5tons rated load moment is 400t.m,and the free standing height only with fixing angles is 73 meters,the height with anchor frame and be up to 275 meters.
the tower crane section and climbing frame adopts splits structure for easy transporting. The electrical control system use the electrical components produced by professional electrical factory with foreign advanced technology.Its useful life is longer than home-made components 3~4times, and it has few breakdowns and easy to maintain.All kinds of security devices are complete,and are mechanical or mechatronical or mechanism adopts advanced and credible frequency stepless speed regulation project in the modern world, and works more stable and reliable.