Jiubang folding arm crane has the characteristics of large lifting capacity, high operating height, and can adapt to different environments. It mainly performs lifting by extending multiple hydraulic cylinders, similar to the device of an articulated arm manipulator, so it can be equipped with various auxiliary tools, such as empty work platforms, work buckets, clamps, hanging baskets, plate forks, various grabbers, Augers, tire installation manipulators, pile pullers, etc. to meet the needs of different working scenarios.