When did excavators first come out?.
In the current social construction, excavators are becoming more and more integrated with our daily life. The excavator is the earliest human or animal power for digging deep river dredger, bucket capacity is generally not more than 0.2~O.3 cubic meters. The first excavator manual has been developed for more than 130 years of history, has experienced a gradual development process of automatic hydraulic excavator driven by steam rotary bucket excavator to the internal combustion engine and electric drive rotary excavator, application of mechatronics technology during the. 2012-4-15 22:37:57 upload download attachment (7.39, KB)American Otis 1833~1836, the design and manufacture of the first steam engine, composite structure, semi rotary, rail mounted single bucket excavator, productivity is 35 cubic meters per hour, but because of poor economy without application. The improved steam shovel was formally produced in 1870s and applied to strip stripping. 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, there was the first motor driven single bucket excavator;In 1912, there was a full rotary single bucket excavator driven by gasoline engines and kerosene engines;In 1916, a single bucket excavator powered by diesel generators was produced;In 1924, diesel direct drives began to be used on single bucket excavators; crawler walking devices were 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.Due to the application of hydraulic technology, a suspension excavator equipped with hydraulic backhoe was installed in the tractor in 1940s.
