Excavators used in mines can be divided into the following core types based on their operating principles and scenarios:
Hydraulic excavator: Equipped with a hydraulic transmission system and a reinforced bucket with a standard bucket capacity of ≥4m³, the machine covers a weight range of 70-700 tons and is suitable for stripping and loading operations in open-pit mines. Its advantages include a 360° full-turning platform, high excavation force (such as the XE3000 model with a bucket capacity of 13-18m³), and compatibility with diesel or electric drives. Some models have passed explosion-proof certification for use in underground tunnels.
Bucket-wheel excavator: With multiple buckets operating continuously on the rotating wheel, it boasts high productivity and substantial excavating force, making it commonly used for stripping and mining in large open-pit mines. These machines are categorized from small to giant models, with the largest models capable of producing up to 240,000 cubic meters per day. However, they exhibit less flexibility and are sensitive to the hardness of the material.
Special modified models: such as extended-arm excavators (Mingde two-section/three-section boom), which adapt to deep foundation pits (excavation depth of 24 meters) or high-altitude dismantling (lifting height of 23 meters) by expanding the operation range, without requiring modifications to the original machine structure, offering high cost-effectiveness.
