Anti-overshoot device for low-temperature storage tank

The utility model relates to an anti-overshoot device for a low-temperature storage tank. The anti-overshoot device comprises a buffer box, an opening is formed in the top of the buffer box, buffer seats are arranged on the two sides of the buffer box, the buffer seats penetrate through the buffer box and are connected with the buffer box in a sliding mode, first buffer mechanisms are arranged in the buffer seats, and second buffer mechanisms are arranged at the bottom end in the buffer box. The first buffering mechanism comprises telescopic seats symmetrically fixed to the inner wall of the buffering seat, telescopic shafts are slidably arranged at one ends of the telescopic seats, a connecting plate is jointly fixed between one ends of the two telescopic shafts, and first buffering springs are symmetrically arranged on one side of the connecting plate; the problems that in the prior art, buffering on the two sides of the storage tank is achieved only through springs, when shaking occurs, the storage tank ca