Development of motor brake system for explosion-proof elevator

Abstract

Recently, we are using explosion-proof elevators not only in industrial areas where there is a risk of gas leakage, but also in poor atmospheric conditions. Therefore, there is an increasing need for development an explosion-proof elevator with more safety. Therefore, this study developed an electric motor brake with high possibility of arc in the elevator parts as an explosion - proof type. For this purpose, we analyzed patented technology of elevator and patent of explosion proof technology. Based on the results, we developed an electric motor brake for an explosion-proof elevator. The technology also focuses on improving the housing and solenoid of the brakes and shows improved explosion protection compared to conventional brakes. As a result of analyzing the patent of the explosion proof technology, it was analyzed that the frame proof enclosure of the brake of the explosion type elevator is effective. The housing of the electromagnetic brake for the explosion-proof elevator was analyzed to be the most preferable structure with the explosion proof structure. Based on the above analysis, this paper defined the locking mechanism of the brakes and design the stable structure of the brakes. In this study, the optimum structure of the electromagnetic brake for the explosion proof elevator was found to be the explosion proof structure, and the existing elevator explosion proof technology focused only on the structure of the switch was extended to improve the explosion proofing function by improving the housing.