SHIELD OF GYRATORY CRUSHER SPIDER ARM Russian patent published in 2017 - IPC B02C2/06 

FIELD: mining.

SUBSTANCE: spider assembly comprises a central hub (117), a plurality of arms (110) and a plurality of removable shields (120). The arm extends radially outward from the hub toward the outer rim (113). The spider assembly is positioned on the frame (111) of the upper casing. The main shield housing (121) has a base of the lower side for arm position at the top, the first end for position on the hub or towards it and the second end for position in the area radially outward from the hub. A pair of shield sidewalls (122) extends downward from the main housing on the longitudinal sides of the base. Shield fastener extends radially inward from the area of the second end towards the first end, providing the ability to radially engage in the arm for supporting the shield radially inward toward the hub. Mounting guide suitable for directing contact between the shield and the arm provides engagement of arm side areas in each side wall. The upper casing forms an inner crushing chamber (104) and is mounted on the lower casing (102). The main shaft (107) supports a lining (103), providing the ability for gyroscopic precession.

EFFECT: convenient shield attachment and its disassembly without exposing arm integrity to risk.

15 cl, 11 dwg