Xiang electric group SF33900 type 220 tons AC drive electric wheel dump truck, the bicycle sells for more than 20 million yuan. The length of the vehicle is 13.6 meters, 7.8 meters wide, and 7.1 meters high, the vehicle's self weight is 166 tons, the stacking capacity of the car is 137 cubic meters, and the maximum load capacity is 220 tons. People have only half the height of the tires.
China is one of the largest producers of coal, iron, nonferrous metals and rare earth in the world, and has huge demand for mining machinery. However, for a long time, due to the weak industrial foundation, the earth moving machinery needed for open-pit mine projects in China mainly depends on imports. In October 28, 2008, the SF33900 type 220 ton AC drive electric wheel dump truck developed by Hunan Hunan Electric Group was successfully downline, which marks the new steps of the mining vehicles in China. Hunan Electric Group has also become one of the few enterprises in the world that can develop large mining vehicles.
Mine truck is the main transportation equipment in open pit mining. Mining (including coal, iron, copper, rare earth, diamond mines, etc.) includes underground mining and open mining two processes. 40% of the world's coal mines and 80% of iron ore are produced in open air. Before mining, the ore body is covered by dozens of meters of soil and rock, up to tens of millions or even hundreds of millions of tons. It is necessary to use explosives to explode the cover layer and make it loose; then use the electric shovel to excavate the machinery, and excavate the divestiture earth to the transport vehicle, and dump the residue into the dump by the dump truck. The giant shovel has an amazing working efficiency, its bucket capacity is more than 50 cubic meters, and an average of nearly 100 tons of earth and stone can be dug per minute, and tens of thousands of tons per day are excavated. The ordinary truck can not cooperate with it. To this end, the construction machinery manufacturers have developed the world's largest and most expensive load-carrying electric wheel dump truck.
The mine dump truck can be divided into the rigid post unloading, the whole bottom unloading and hinged type according to the carriage structure, and it can be divided into electric drive and mechanical transmission (hydraulic transmission) according to the transmission mode. More than 100 tons of mining vehicles are mostly rigid rear unloading structure, small and medium vehicles are mostly articulated structures, and the overall bottom unloading type is mainly coal trucks. The electric wheel technology rose in the 60s of last century. Under the impetus of GE, Unit Rege, SIEMENS, Liebherr and other manufacturers in the United States, it once occupied all the markets. The main work way is: diesel engine drive generator to generate electricity, drive the motor in the rear wheel hub, and the high speed hub motor is driven by the outer planetary gear reducer to reduce the speed and drive the rear wheel forward. Mechanical transmission is dominated by American Caterpillar Inc.
