| 摘要 |
A To facilitate manipulation of an impact member 20 of a coarse reduction impact crusher, the impact member 20 together with its wedge members 22 is only loosely inserted in an accommodating cavity 14 for the impact member, whereby when rotation of a rotor 10 is started the impact member 20 and wedge members 22 are urged by the resulting centrifugal force from a disengaged position near the axis of the rotor into a wedged position relatively distant from said axis.
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