| 摘要 |
The invention concerns a crushing ball for coal reduction, characterised in that it consists of two identical hemispheres, upper and lower, however, each hemisphere has a recess, having in its cross-section the shape of a trapeze with lesser base of trapeze located in division plane of the ball and in recess of both hemispheres is a ring-shaped connector of cylindrical inside surface, having in its cross-section the shape of a figure made by connecting two trapezes along their lesser bases, whereas gap between connector and surface of recess of both hemispheres is filled with plastic plastics creating a lock connection, preferably with electrolytic iron, whereas inside the ball is ring of cylindrical outer surface adjacent to sector of corresponding to it inner cylindrical surface of upper and lower hemisphere, and on outer surface of ring (7), sued for mounting of both hemispheres, is located circumferential protrusion (5) and axial recess (8).<IMAGE>
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