Excavator history

by:Join Machinery     2021-04-22
Excavator, also known as excavator, is an earth-moving machine that uses a bucket to excavate materials above or below the bearing surface and load it into a transport vehicle or unload it to a stockyard. The materials excavated during operation are mainly soil, coal, silt, and pre-loose soil and rocks. According to the analysis of construction machinery experts, the recent development of excavators is relatively fast, and as one of the main construction machinery models in engineering construction, the main operation part of the excavation process is the bucket teeth, and the correct selection of the bucket teeth is even more obvious. Is important. It has been more than 130 years since the world’s first manual excavator came out. During this period, it has experienced a steam-driven bucket rotary excavator to an electric drive and an internal combustion engine driven rotary excavator, and a fully automatic hydraulic excavator using electromechanical-hydraulic integration technology. The gradual development process. The application of hydraulic technology in the production of excavators. In the 1940s, there were mounted excavators equipped with hydraulic backhoes on tractors. In the early and mid-1950s, towed full-rotation hydraulic excavators and crawler-type full-swing excavators were successively developed. hydraulic excavator. The hydraulic excavator that was trial-produced in the early stage of the excavator used the hydraulic technology of aircraft and machine tools, and lacked hydraulic components suitable for various working conditions of the excavator, the manufacturing quality was not stable enough, and the supporting parts were not complete. The development of excavators Since the 1960s, hydraulic excavators have entered a stage of promotion and vigorous development. Excavator manufacturers and varieties in various countries have increased rapidly, and output has soared. The development of excavators During the period from 1968 to 1970, the output of hydraulic excavators accounted for 83% of the total output of excavators, and it is now close to 100%.
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