The invention relates to the technical field of anti-
rollover of crawler cranes, in particular to an anti-
rollover device for a crawler crane and a
rollover early warning method. The anti-rollover device for the crawler crane comprises a crawler belt, a
rotating disc, a bearing table, a main
machine, a cab, a lifting wall, a hook
rope, a lifting hook and a variable amplitude steel wire, and further comprises a weight box, a
piston plate, a connecting rod and a telescopic oil cylinder. According to the rollover early warning method for the crawler crane, a central
control unit can control the telescopic oil cylinder and an
air pump to perform corresponding actions according to an alarm of a corresponding degree, so that the crawler crane has an automatic rollover prevention function, the adjustment is continuous and in real time, the
gravity center change condition of the crawler crane can be visually displayed through a display screen, so that the operation stability of operators is improved, and the rollover prevention performance of the crawler crane is improved.