TOOTH WITH TAPERED SURFACE REDUCED GRIP Russian patent published in 2021 - IPC B02C13/28 B02C4/30 E21C35/18 E21C35/19 

FIELD: crushers and cutting machines.

SUBSTANCE: invention relates to crushers and cutting machines with rotating drums. Tooth holder includes a first end, a second end, and a channel extending at least in part between the first end and the second end along the longitudinal axis. The channel is conical and has such a taper angle of the channel relative to the longitudinal axis that the diameter of the channel section near the first end exceeds the diameter of the channel section near the second end. Tooth includes a shaft, a cutting tip, and a bead located between the shaft and the cutting tip. Moreover, the shaft is tapered and has a taper angle of the shaft, essentially equal to the taper angle of the channel. In this case, the collar rests against the first end of the holder. The crusher-feeder comprises a conveyor including a first end for receiving material and a second end for discharging material, and a crusher for interacting with the material. The crusher is located between the first end and the second end of the conveyor. The crusher includes a drum rotatably supported on an axle and a plurality of tooth systems attached to the outer surface of the drum.

EFFECT: reduced time required to replace or repair teeth.

24 cl, 11 dwg