| 摘要 |
PURPOSE: Provided is a crushing roller in an aggregate crusher which allows plural grooves to be set along the surface of the roller and inhibit pieces of the aggregate from being scattered to lateral side so that it helps to prevent damage caused by pieces of the aggregate. CONSTITUTION: In the aggregate crusher which consists of an aggregate crushing part having plural crushing rollers and an aggregate supply part, the crushing roller in the aggregate crusher comprises the parts of: plural first grooves(2) which are formed along the center part of the crushing roller at regular intervals; and plural second grooves(3) which are kept distant from the first grooves and formed at both sides of the first grooves.
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