Abstract: Mine promotion is an important key in the process of production, and braking system is the safeguard in the process of promotion.Based on the study of hydraulic disc brake system produced in West Magnitogorsk used in Xingshan mine main shaft, the working principle of the brake system was introduced in detail, and ST3- D hydraulic station and its working process of the main valve was analyses deeply.

Key words: ST3-D hydraulic station, Disc brakes, Mine promotion, Valve