Excavators, also known as excavators, are earthmoving machines that use buckets to dig materials above or below the bearing surface and load them into transport vehicles or unload them to the storage yard. The materials excavated by excavators are mainly soil, coal, sand, and soil and rock after pre-loosening. From the perspective of the development of construction machinery in recent years, the development of excavators is relatively fast, and excavators have become one of the most important construction machinery in engineering construction. The three most important parameters of excavators are: operating weight (mass), engine power and bucket capacity.