Crawler crane is a self-propelled crane used for high-rise building construction. It is a type of boom rotating crane that uses caterpillar tracks to move. The track has a large grounding area, good passability, strong adaptability, and can carry loads, making it suitable for lifting operations on construction sites. It can carry out various operations such as excavation, compaction, and pile driving. However, due to slow walking speed, other vehicles are required for long-distance transfer to the construction site.