Patent ID: 7032740

Claim:
A device for automatically sensing the wear state of movable wheels or rollers in conveying systems, comprising: a conveying system having movable wheels or rollers; a measuring station through which each wheel or the roller runs, said measuring station arranged in a stationary fashion in the conveying path of the system, wherein diameter deviations of the wheel or of the roller from a predefined set point diameter can be sensed in a contactless fashion and signaled with said measuring station; and wherein said measuring station comprises two photoelectric beam emitters that emit two parallel photoelectric beams which are spaced apart from one another, said photoelectric beams being directed tangentially with respect to the circumference of the wheel or roller and are spaced apart corresponding to the smallest permissible diameter of the wheel or of the roller, wherein the wheel or the roller is guided through said photoelectric beams in order to sense diameter deviations.