The first generation of excavators: electric motors, internal combustion engines appeared, so the excavator has advanced and suitable electrical device, so a variety of excavators were born. In 1899, the first electric excavators appeared. After World War I, the diesel engine is also applied to the excavator, the diesel engine (or motor) driven by a mechanical excavator is a first generation excavator.
The second generation excavator: With the widespread use of hydraulic technology, the excavator has a more scientific suitable gearing, hydraulic excavators instead of mechanical drive technology is a big leap. 1950 Germany's first hydraulic excavator was born. Mechanical drive is the second generation of hydraulic excavators.
The third generation of excavators: electronic technology, especially the widespread use of computer technology, the excavator has an automated control system, but also the excavator to high-performance, automated and intelligent direction. Mechatronics budding occurs after about 1965 years ago, and in the production of hydraulic excavators used in mechatronics technology around 1985, when the main purpose is to save energy. Excavator Excavator third generation of electronic signs.