GYRATORY CRUSHER SPIDER ARM SHIELDS Russian patent published in 2018 - IPC B02C2/06 

FIELD: desintegrators and crushing devices.

SUBSTANCE: invention relates to means of crushing materials and can be used in gyratory crushers. Gyratory crusher comprises an upper shell, a spider having a plurality of spider arms extending radially outward from a hub, a plurality of arm shields mounted at the respective arms. Each shield has a first end for positioning at or towards the hub and second end (206) positioned radially outward from the hub. Crusher is also provided with at least one lug projecting from each arm and a locking flange secured to the hub. Each of the shields comprises at least one notch to engage each respective lug to inhibit radially outward movement of the shield relative to the arm. At least a portion of the flange is seated on top of the first end of the shield that in combination with the lug and notch locks each of the shields axially and radially at each of the respective arms.

EFFECT: shields are conveniently mounted and dismounted to avoid attachment by welding or attachment bolts.

14 cl, 6 dwg