When was the excavator invented in that country?
In 1880, the first semi - rotary steam shovel with tractors as the chassis appeared.From the early twentieth Century to the late 40s, excavators entered the stage of diversification of power and walking equipment. In 1910, the first motor driving the excavator; appeared 1912 gasoline and kerosene engine driven rotary excavator produced in 1916; the diesel engine driven generator single bucket excavator; 1924 diesel engine direct drive for single bucket excavator; crawler walking device introduced in 1910. With the development of the automobile industry, the tire walking device is widely used in small excavator. In 30s, a walking device appeared.In the middle of 50s, Germany and France developed the full rotary hydraulic excavator successively, and the development of excavator entered a new stage.
The excavator is the earliest human or animal power for digging deep river dredger, bucket capacity is generally not more than 0.2 cubic meters of ~ O.3.From 1833 to 1836, the American Otis design and manufacture of the first steam engine, composite structure, semi rotary, rail mounted single bucket excavator, the productivity is 35 cubic meters / hour, but because of poor economy without application. The improved steam shovel was formally produced in 1870s and applied to strip stripping.
Excavator from the invention to now, has gone through 178 years of history, during which experienced from manpower to steam, and then hydraulic drive. As the "Pearl" of construction machinery industry, the invention and development of excavator play a great role in saving manpower and improving work efficiency.
