Antiwear device of upper friction disk of hydraulic gyratory crusher

The utility model relates to an antiwear device of an upper friction disk of a hydraulic gyratory crusher. The antiwear device comprises an upper friction disk body and a lubricating oil channel on the upper friction disk body, wherein a middle oil channel is arranged in the middle part of the upper friction disk body and is communicated with the lubricating oil channel on the friction disk body, and a base plate is arranged between the upper friction disk body and the bottom of a movable cone of the hydraulic gyratory crusher. Since the annular middle oil channel is additionally arranged on the upper friction disk body, the sliding wear of the upper friction disk is relieved, the maintenance cost is reduced, and the service life of the upper friction disk is prolonged to three year from eight months before. Furthermore, the base plate is added to the worn upper friction disk, the replaced worn upper friction disk out of tolerance can be used again, so that waste is reduced, the direct cost of the friction di