Routine inspections is to ensure that the hydraulic excavator can be an important part of long-term efficient operation, especially for the self-employed, the daily inspection work to do in peacetime can effectively reduce maintenance costs. First, the first two laps around the machinery to check the appearance and presence or absence of abnormal mechanical chassis and slewing ring if there is oil outflow, and then check the brake deceleration device and track bolt fasteners, tighten the tightening, used excavators market analysis, the exchange of timely replacement, and if you need to check the tire wheel excavator whether there is abnormal, and the stability of air pressure. See if there is a large excavator bucket teeth wear, it is understood, will be fighting tooth wear substantial increase in the construction process of resistance, second-hand excavator market, it will seriously affect the efficiency and increase the wear of equipment components. Initially excavator is manual, from discovery to 2013 has been one hundred and thirty years, experienced a period bucket rotary excavator driven by steam to electric drives and internal combustion engine driven rotary excavator, hydraulic integration of the whole application progressive development of automatic hydraulic excavator. The first hydraulic excavator factory invented by the French Poclain success. Because the application of hydraulic technology, in the 1940s on a tractor equipped with a hydraulic backhoe excavators suspended. In 1951, the first fully hydraulic backhoe made in France Poclain (Poquelin) factory launched, resulting in the development of art and created a new space excavators, used excavators market entrepreneurship, and early 1950s We have developed a mid-drag full-swing hydraulic excavators and crawler hydraulic excavator whole. Early trial is the use of aircraft hydraulic excavator and machine tool hydraulic technology, components for hydraulic excavators lack various working conditions, second-hand excavator market price, manufacturing quality is not stable enough, parts are not complete. Since the 1960s, the hydraulic excavator into the promotion and vigorous stage of development, countries excavator factory and varieties increased rapidly, production soared. 1968--1970 years, excavator hydraulic excavator production accounted for 83% of total production, has been close to 100%. Shanghai second-hand excavator used excavator market _ Kim Ho (certified) _ Used excavator market by the Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) is the Shanghai Minhang District, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Kim Ho used excavators in leadership with the staff warmly welcome all inquiries negotiations to create jinhao used excavators better future.