| 摘要 |
A gyratory crusher, with externally mountable dynamic balancing means, is disclosed having a lower frame, a stationary upright upper frame mounted on the lower frame, and a generally conical crushing head arranged within a concave mounted within the upper frame to define a crushing chamber between the concave and the head. The head is supported by the lower frame and driven to gyrate around a central axis through the upper frame. A pair of upright balance shafts are provided and arranged with one on each of opposite sides of the crusher and the balance shafts are driven to rotate in synchronism with the gyratory movement of the head around the axis of the concave. A pair of balance weights are provided with one balance weight attached to each balance shaft to rotate therewith. The balance weights each have a center of gravity offset from the balance shaft to counterbalance forces generated by the gyratory movement of the head about the upper frame axis.
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