Buffering device for preventing foreign matter from falling into vertical shaft to break down cage

A vertical shaft cage buffering device capable of preventing foreign matter from falling into the shaft to break down comprises four buffering layers which are sequentially stacked in a box body, the buffering layers are divided by cross beams in the middle of the box body, the bottom buffering layer comprises buffering springs installed at the bottom of the box body, and the buffering springs abut against the cross beams above. A rubber pad is arranged between the buffer spring and the cross beam; and two layers of rubber pads and a reinforcing mesh arranged between the rubber pads are arranged above each cross beam. By means of the energy absorption and buffering functions of the elastic systems and the friction systems of the four buffering layers, the influence of foreign matter falling from the vertical shaft on the cage can be effectively prevented, the safety of the cage is effectively improved, and remarkable use value and economic benefits are achieved. 一种立井防异物坠井击穿罐笼缓冲装置，包括在箱体内依次堆叠的四个缓冲层，每层的缓冲层之间由箱体中