excavators, which we often say, are excavating machinery, the english name of which is to excavate material above or below the plane by a bucket, then reloaded into a transport vehicle or a earthwork machine unloaded into the dump yard. excavators are mainly used to excavate soil, coal, silt, and pre loosened soil or rock. looking at the development of engineering machinery in recent years, the development of the excavator is in the forefront of the times, and the excavator has become one of the inseparable engineering machinery in the construction of the project. the basic parameters of the excavator include three parts: bucket capacity, operation weight and engine power.
as early as 1951, the first full hydraulic backhoe excavator was born in a factory in france, which created a new space field in the field of technical development of excavators, and made a big step for the development of engineering machinery. in the early and mid 1950s people developed a towed full rotary hydraulic excavator successively. and crawler type full hydraulic excavator. the first time hydraulic excavator is the combination of the hydraulic technology of aircraft and machine tools, the lack of hydraulic components suitable for various working conditions of the excavator, so the manufacturing quality at that time can not achieve a certain stability, and the supporting parts can not be complete. since 1960s, the hydraulic excavator has entered the stage of popularization and flourishing. the production of excavators and the varieties of excavators in various industrial countries have increased rapidly, and the production has also developed rapidly. by 1970, the output of hydraulic excavators accounted for eighty percent of the total output of excavators.
and the rapid development of modern cities, making the development of excavators in recent years has been a greater breakthrough, a large number of automated excavators have been born, providing a powerful premise for the development of the city.
