An excavator, also known as an excavator, is developed on the basis of a mechanical transmission excavator. It uses a bucket to excavate materials higher or lower than the bearing surface, and loads them into transport vehicles or unloads them into a storage yard. Earth-moving machinery for periodic operations.
Excavator models are roughly divided into 50, 60, 65, 75, 80, 130, 150, 200, 210, 215, 220, 240, 350, etc. The minimum is 50. The number after removing 0 is close to its tonnage, and the classification of large, medium and small excavators is divided by tonnage. Generally, those below 20 tons belong to small excavators, those between 20 tons and 30 tons belong to medium-sized excavators, and those above 30 tons belong to large excavators. However, due to the nature of the region, many places are different.
The excavated materials are mainly soil, coal, sediment and pre-loosened rocks and ores, which are mainly used in modern engineering construction. Judging from 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 an excavator are: operating weight (mass), engine power and bucket capacity.
Generally, 200, 220, and 320 written on the side of the cab are models. 200 is a 20-ton excavator, 220 is a 22-ton excavator, and 320 is a 32-ton excavator. The excavator is generally determined by its own weight. The bucket is generally 1 ton, and there are also 0.8 tons and 1.2 tons.
According to different sizes, excavators can be divided into large excavators, medium excavators and small excavators; according to different walking methods, excavators can be divided into crawler excavators and wheel excavators; according to different transmission methods , Excavators can be divided into hydraulic excavators and mechanical excavators. Mechanical excavators are mainly used in some large mines; Different categories like excavators.