Originally the excavator was manual, from the invention to 2013 has been more than 130 years, during the period experienced by the steam-driven bucket slewing excavator to the electric drive and the internal combustion engine drive slewing excavator, the application of mechatronics technology, automatic hydraulic excavator progressive development process. The first hydraulic excavator was successfully invented by the French Pockland factory. As a result of the application of hydraulic technology, in the 1940s, the tractor was equipped with hydraulic backhoe-type hanging excavator. In 1951, the first fully hydraulic backhoe excavator was launched by the Poclain (Pockland) factory in France, which created a new space in the field of technology development in the excavator, and in the early 1950s and the medium-term, towed full slewing hydraulic excavator and crawler-type full hydraulic excavator were developed. The initial trial-produced hydraulic excavator is the use of aircraft and machine tool hydraulic technology, the lack of applicable to the excavator various operating conditions of the hydraulic components, manufacturing quality is not stable, supporting parts are not complete. Since the 1960s, hydraulic excavator into the promotion and vigorous development stage, the national excavator manufacturers and varieties increased rapidly, production soared. 1968-1970, hydraulic excavator production has accounted for 83% of total excavator output, has been close to 100%.
The first generation of excavators: the emergence of motor, internal combustion engine, so that excavators have advanced and suitable electric devices, so various excavator products have been born. 1899, the first electric excavator appeared. After the First World War, diesel engines were also used on excavators, and the mechanical excavators, driven by diesel engines (or motors), were the first generation.
Second generation excavator: With the widespread use of hydraulic technology, so that excavators have a more scientific application of the transmission device, hydraulic transmission instead of mechanical transmission is a big leap in the technology of excavators. 1950 the first hydraulic excavator of Germany was born. Mechanical transmission hydraulic is the second generation of excavators.
Third generation excavator: electronic technology, especially the extensive application of computer technology, so that the excavator has an automated control system, but also to enable excavators to high-performance, automation and intelligent direction of development. Mechanical and electrical integration of the germination occurred around 1965, and in the mass production of hydraulic excavators on the use of Mechatronics technology in about 1985 years, the main purpose is to save energy. Electronic excavator is the symbol of the third generation excavator.
Excavator industry manufacturers can be roughly divided into four categories. More than 70% of domestic excavators are occupied by foreign brands, domestic brands are still small digging and digging mainly, but the share of domestic excavator is gradually upgrading, 2012 year-on-year increase of 3.6%.