Floodgate accuse inefficacy monitoring protection device

The utility model provides a floodgate accuse inefficacy monitoring protection device, relates to mine lifting machine crucial mine safety technical field such as electric braking protection under the floodgate accuse emergency braking performance monitoring of system and the brake failure condition for the hydraulic braking. The utility model discloses an independent UPS power, PLC, incremental encoder does not influence original lift system's driving logic and technology protection, brake performance's such as braking distance, braking period, brake deceleration real -time supervision and record when having realized the floodgate accuse emergency braking of system, the logical decision to floodgate accuse failure state has been increased to can make and to carry out electric braking for electricity on the motor secondary by transmission, adopt man -machine interface HMI to show in real time and take notes brake performance and alarm information. The device is favorable to improving mine lift system's securi