"So marvelous! I never thought a 800-ton whopper with a big arm, a winching device and a super hoister could move so flexibly and fast, running on the mountain road, with a performance as good as a cross-country compact car!" a worker at Qingdao Wind Power Plant said very excitedly! 
Yes, that is just the perfect performance of XCMG's QAY800 full-ground crane in the wind power plant! Its super performance has enchanted us so much that we have to hunt out the reason behind it：It is XCMG's 48-year profound history of research on cranes that has built up this excellent technical team of XCMG Heavy Machinery! By their unceasing efforts in innovation and breakthrough, the Chinese researchers only used 7 years to complete the R & D of the series products of 14 types of large-scale full-ground-type cranes from 125 tons to 1200 tons, 13 types of them are fresh-new products in China, and all the four key technical indicators have reached or exceeded the advanced level of the world. 

I. The Self-loading and Unloading Technology，Saving Time for Users to the Best Extent
XCMG's 800-ton crane has shaken off the problem of "Hard in removal and mounting, and long time consuming" in the past super-large hoisting machinery. For an assembling task that usually takes half a day or even a whole day for most ultra-large types of cranes, it only takes one hour for QAY800 to finish the installation of the big arm and balance weight, with its unique big-arm self-assembly technology and counterweight adaptive control technology. The speed is so fast and the installation is so accurate! 

Assembling the Balance Weight 

Assembling the Balance Weight 

Assembling the Super Crane 

II. Loaded Running Technology，Fast Diversion and Efficient Working
With a big arm as heavy as 205 ton, the winching device and the super hoister, it can still run freely on a slope of 15 degrees：That is the wonder XCMG's 800-ton full-ground-born crane has worked! After the on-the-spot investigation in Qingdao Wind Power Plant, we found: the 20-plus fans are distributed separately on the undulating hills, there are many difficulties in actual construction work, for example, the field changing is the biggest problem. Yet, XCMG's QAY800 can work with a load of 205 tons, whose speed can reach 30km / h，its change of field only takes ten minutes or so. Its high performance has amazed all the people on the spot. 

Running freely with a load of 205 tons 

III. The Combined Arm Support for Super Hoisting，Displaying the Excellent Hoisting Performance
When QAY800 picks up a 65-ton engine room to the height of 86 m, it can move so stably and quickly. The chief reason is XCMG's mature combined arm technology for super hoisting, as it has always been focusing on the study on the super hoisting working condition for large-scale equipment, and it has upgraded the hoisting performance by 300%, greatly reducing the deformation of the arm of the crane, and guaranteeing the workmanship. 

Hoisting of the Engine Room

News source: XCMG