1. Repair the lifting height limiter of the bridge crane in time. If it cannot be repaired or its performance is unreliable after repair, it should be scrapped and replaced. In addition, check the limiter of the auxiliary hook and the lifting height limiter of other cranes.
2. According to the redundancy principle of setting safety devices, it is recommended to set two limiters for each bridge crane lifting mechanism and implement double insurance.
3. Strengthen the safety technology and safety ideological education of employees, enhance safety awareness during operation, and achieve concentration and proficiency. The movements with great technical difficulty should be trained repeatedly, and the physiological conditioned reflex should be achieved, so that the operator can open and do, be sensitive and accurate, and reach the position in one step, so as to avoid the phenomenon that the handle is not at the zero position, but the thought is at the "zero position".
4. The bridge crane ground commander should stand in a non dangerous area to command, even if working under the crane with two sets of reliable lifting limiters, he should not stand under the hook to prevent accidents.
