| 摘要 |
A hammer mill has a plurality of hammer assemblies pivotally mounted about the periphery of a rotating rotor. Each hammer assembly has an arm portion connected to a pivot shaft and carrying a detachable head with slightly inclined impact surface. An equalization mass is attached to a rear side of the arm portion with its center of gravity rearwardly of a line between the center of gravity of the entire hammer assembly and the pivot shaft. As the material of the hammer wears away, the center of gravity of the assembly moves rearwardly, pivoting the hammer head forwardly under the centrifugal forces imposed. The wearing life of the head is increased and an optimum impact angle is maintained by the equalization weight. The head is made detachable from the arm but is positively locked during operation. |
