Excavators, also known as digging machines or earthmoving machines, are earthmoving machinery that use buckets to excavate materials that are higher or lower than the bearing surface, and load them into transport vehicles or unload them into the material yard.
The materials excavated by excavators mainly include soil, coal, sediment, as well as pre loosened soil and rocks. From the development of construction machinery in recent years, the development of excavators has been relatively fast, and excavators have become one of the most important construction machinery in engineering construction. The three most important parameters of an excavator are operating weight (mass), engine power, and bucket capacity.