XGC28000 is Xugong following the XGC16000 crawler crane, the successful development of 2000 tons crawler crane products. In the process of product development and manufacturing, a number of key core technologies have been broken through, among which the dual power closed hydraulic system and control technology not only solves the technical difficulties in the design of hydraulic transmission and control system of super large crawler crane, but also provides ideas and implementation schemes for the design of multi-power system of large construction machinery; The adaptive overlift counterweight amplitude changing technology makes the overlift working condition flexible, efficient and safe. The conversion efficiency of overlift counterweight amplitude is increased by more than 2 times, and the amount of swing is reduced by more than 60%. The small limit size and large bearing capacity of the six-row axial roller structure can improve the stress state of the roller, which is more than 25% higher than that of the traditional structure, and solve the problems of less than 3.5 meters in diameter and large vertical force, and the capacity can reach 2000 tons. The large flexibility boom system allows the crawler crane to jump from 900 tons to 2,000 tons in the combination of more than 200 meters of boom length, and the boom size is less than 3.5 meters of legal transport width.
