| 摘要 |
A core breaker positioned between cutting drums on a mining machine that includes a generally circular support member, and a beveled blade portion on the radial outward surface of the support member. The beveled blade portion includes a plurality of wedge-shaped portions and a plurality of serrated portions. Each wedge-shaped portion is connected to an adjacent wedge-shaped portion through a mediate serrated portion. Both the wedge-shaped portions and the serrated portions are generally beveled. The wedge-shaped portions and serrated portions maintain curvatures, giving the blade portion a generally undulated appearance. The blade portion has two faces, and can be beveled on a single face. Alternatively, the blade portion can be beveled on each face. The beveled surfaces can be substantially symmetrical or asymmetrical from a view in the radial direction of the generally circular support member.
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