The original excavator was manual, and it has been more than 130 years since its invention until 2013. During the period, it has experienced the full range of steam-driven bucket rotary excavators to electric drive and internal combustion engine driven rotary excavators. The progressive development process of automatic hydraulic excavators. The first hydraulic excavator was invented by the Poclain plant in France. Due to the application of hydraulic technology, in the 1940s there was a suspended excavator equipped with a hydraulic backhoe on the tractor. In 1951, the first fully hydraulic backhoe excavator was launched at the Poclain plant in France, creating a new space in the technical development of excavators, which was developed in the early and mid 1950s. Full-turn hydraulic excavator and crawler-type full hydraulic excavator. The hydraulic excavator that was initially trial-produced is hydraulic technology using aircraft and machine tools. It lacks hydraulic components suitable for various working conditions of excavators. The manufacturing quality is not stable enough and the supporting parts are not complete. Since the 1960s, hydraulic excavators have entered the stage of promotion and vigorous development, and the number of excavator manufacturers and varieties in various countries has increased rapidly, and the output has soared. Between 1968 and 1970, hydraulic excavator production accounted for 83% of total excavator production, which is close to 100%.
The first generation of excavators: the emergence of electric motors and internal combustion engines made the excavators have advanced and suitable electric devices, so various excavator products were born. In 1899, the first electric excavator appeared. After the First World War, diesel engines were also used on excavators. This diesel engine (or electric motor) driven mechanical excavator was the first generation of excavators.
The second generation of excavators: With the extensive use of hydraulic technology, the excavator has a more scientific and suitable transmission device. Hydraulic transmission instead of mechanical transmission is a big leap in excavator technology. The first hydraulic excavator in Germany was born in 1950. Mechanical transmission hydraulics is the second generation of excavators.
The third generation of excavators: The wide application of electronic technology, especially computer technology, enables the excavator to have an automated control system, which also enables the excavator to develop in the direction of high performance, automation and intelligence. The germination of mechatronics occurred around 1965, and the mechatronics technology used in mass-produced hydraulic excavators was around 1985, when the main purpose was to save energy. Electronic excavator is the symbol of the third generation of excavators.