Badania niezawodnościowe silników napędowych maszyn górniczych

The paper present's a review of construction solutions an transportation mines machines (chain and belt conveyors) used in undergrounds of coal mines, with particular consideration of drives motors. In the paper defined a basic aims and definitions of reliability investigations, and also presents an mathematical analysis reliability investigations of induction motors. For selected constructions of mine transportations machines performed an analysis of drive system reliability. That analysis were realized on the base of database obtaining with coal mines and electric motors repair factory. Calculated of reliability coefficients may be of base an increase of the times an failure free motor works, and increase of the times an failure free work of different types of mine machines. Results of computer calculations realized for different type of the motors were applied by the manufacturer of electric motor and constructor of mine machines at designing of revision periods. Results of reliability investigations can be applied in eliminations of weak points an drive systems.