Excavator textual research generally requires 700 yuan to review 300 yuan. The time for obtaining the license is about one month after registration. Applicants must be able to operate by themselves, and the school is generally not responsible for training.

Structural composition:

Common excavator structures include power device, working device, slewing mechanism, control mechanism, transmission mechanism, walking mechanism and auxiliary facilities.

The transmission mechanism transmits the power of the engine to the hydraulic motor, hydraulic cylinder and other executive elements through the hydraulic pump, and pushes the working device to move, thus completing various operations.

The materials excavated by excavators are mainly soil, coal, sediments and pre-loosened soil and rocks. Judging from the development of construction machinery in recent years, excavators have developed relatively rapidly, and excavators have become one of the most important construction machinery in engineering construction. The three most important parameters of excavator are working weight (mass), engine power and bucket capacity.

The above contents refer to Baidu Encyclopedia-Excavator.