Excavator with special equipment for softening the surface of seasonally frozen ledges
A significant part of the territory of Russia is located in areas with a harsh climate, approximately 20% of earthworks are carried out when the ground is frozen. In the frozen state of the soil, a significant increase in the laboriousness of their development and the complication of earthworks are characteristic, due to increased mechanical strength and resistance to destruction. Quite successfully, seasonally frozen rocks can be developed by machines equipped with milling working bodies. The article presents a single-bucket excavator with special equipment for softening the surface of seasonally frozen ledges. Special equipment includes a disc cutter, a thermal burner, a tooth and a housing. The technology of preparation of seasonally frozen rocks for excavation with the use of this equipment makes it possible to simplify the technological process of conducting open-pit mining, reduce the cost of mineral extraction. The special working equipment of a single-bucket excavator presented in the article has significantly smaller dimensions, metal consumption and production cost.