The second generation excavator: With the widespread use of hydraulic technology, the excavator has been applied more scientific gear, second-hand excavator sales center, hydraulic excavator instead of mechanical drive technology is a major leap forward. 1950 Germany's first hydraulic excavator was born. Mechanical drive is the second generation of hydraulic excavators. Positive action in the form of shovel excavator shovel excavator shovel. Its characteristics are "forward upward force cut soil." Shovel digging force, second-hand excavator sales information, can stop above the surface of the soil excavation, second-hand excavator sales market, should be used for excavation pit height greater than 2m dry, but must set up and down ramps. Shovel bucket compared with the backhoe excavator bucket equivalents to be larger, can be no more than 27% moisture excavation of one to three types of soil, and the dump truck with the completion of the entire excavation transport job, you can also tap Large drying pit and mound like. Shovel excavator excavation depending on the relative positions of the excavation route and transport vehicles, second-hand excavator sales, excavators and dump mode has the following two: forward excavators, dump lateral; n to excavators, dump reverse. Used excavator sales | Kim Ho used excavators | used excavators point of sale provided by the Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Used excavator sales | Kim Ho used excavators | Used excavator sales are Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Mr. Chairman.