DEVICE AND SYSTEM FOR MONITORING WEAR OF LIFTERS MOUNTED IN A MINERAL CRUSHER

摘要

A device and a system monitor wear of lifters mounted in a mineral crusher. An elongated bolt maintains a lifter in place on an internal face of the crusher. A threaded section of the bolt terminates at a proximal end protruding externally through a hole of the crusher. A shank of the bolt terminates at a distal end opposite from the proximal end. The shank extends along a height of the lifter and wears as the lifter wears when the crusher is in operation. A transducer coupled to the proximal end of the bolt generates a sound wave applied to the proximal end of the bolt, detects an echo of the sound wave reflected by the distal end of the bolt, and reports to a controller a time delay between the sound wave and the echo. The controller evaluates a wear of the lifter based on the time delay.