The second generation excavator: With the widespread use of hydraulic technology, used digging machine sales company, have a more scientific excavator applicable gear, Chongqing used digging machine sales, hydraulic excavator technology instead of mechanical drive is the first big leap. 1950 Germany's first hydraulic excavator was born. Mechanical drive is the second generation of hydraulic excavators. Hydraulic Excavator General by the working device, the upper body and lower body composed of three parts. According to its structure and purpose can be divided into: Crawler, tire type, walker, hydraulic, semi-hydraulic, full swing, non-full rotation, general-purpose, special type, articulated, telescopic boom and other types. Working device is a direct means to complete the mining task. It consists of the boom, arm and bucket three parts hinged together. In order to meet the various needs of different construction jobs, second-hand excavator sales market, the hydraulic excavator can be equipped with a variety of work equipment, such as digging, lifting, loading, smooth, clamps, dozer, hammer, auger drilling a variety of work tools. Fuzhou second-hand digging machine sales, Kim Ho used excavators, used digging machine sales quotes provided by Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Fuzhou second-hand digging machine sales, Kim Ho used excavators, used excavator sales market is 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 this page or image Contact phone, for the latest information, contact: Mr. Chairman.