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Generally Wheel Excavator with the composed of a power device, a transmission device, a walking device and a working device. Principle: Use a bucket to excavate materials above or below the carrier surface and load the earth moving machinery into the transport vehicle or unloaded to the stockyard. A self-propelled mining machine that uses a bucket to shovel a strip or mineral product from a work surface and transport it to a discharge site for unloading. History: The first manual excavator has been in existence for more than 130 years, and it has experienced a fully automatic hydraulic excavator from steam driven bucket rotary excavator to electric drive and internal combustion Engine driven rotary excavator, applying electromechanical and hydraulic integration technology. Gradually develop the process.
