| 摘要 |
<p>A comminution machine is provided for comminuting crushable materials such as rock, masonry and reinforced concrete, or shreddable materials such as motor vehicle tyres. The machine comprises a hopper having an open top (11) tapering to a narrower discharge opening (12). The hopper has a curved anvil wall (6) and a curved and reciprocally pivotable crushing jaw (7). Movement of the crushing jaw (7) is controlled by a two-way hydraulic ram (9). The shape of the crushing jaw (7) is generally that of a spiral away from its pivotal axis in a direction from the bottom to the top of the hopper, with the result that reciprocation of the crushing jaw (7) imparts a mixture of compressive and shear forces on comminutable material in the hopper, the sheer forces increasing in proportion nearer to the discharge opening of the hopper.</p> |
