It is generally composed of a power device, a transmission device, a walking device and a working device. Principle: Use buckets to dig materials that are above or below the bearing surface and load them into transport vehicles or earthmoving machines that are unloaded to the stockyard. Self-propelled mining machinery that uses a bucket to shovel stripped or mineral products from a working surface and transport it to a dump site for unloading. History: The first manual excavator has been in existence for more than 130 years. During this period, it has experienced from steam-driven bucket rotary excavators to electric and internal combustion engine driven rotary excavators, fully automatic hydraulic excavators using electromechanical-hydraulic integration technology. Progressive development process.
Small excavators are also called small excavators. The definition of small excavators is also different. For example, in countries where excavator loaders are popular (such as the United Kingdom, France, and Italy), small excavator products of 1 to 3 tons are the mainstream. In countries where the use of backhoe loaders is not very common (such as Germany), it is more inclined to use 4-6 ton-class products. However, almost all countries tend to purchase larger equipment, and we conclude that the definition of a small excavator is that a 1 to 6 ton class backhoe loader can be called a small excavator, of which 2.7 to 3.0 ton products The large proportion is due to the fact that they can be easily transferred using general-purpose transportation vehicles. The small excavator benefits from its small size, and it has become an ideal device for earthwork applications in urban areas.