| 摘要 |
A rotor for a crushing machine has a central block mounted on a shaft for rotation. The central block has tapered blade mounting faces circumferential ly spaced about the central block. A blade is secured to each tapered blade mounting face. Each blade has a tapered rotor mounting face matching the tapered blade mounting face. Each blade is secured to the rotor by a pin to pull the tapered rotor mounting fa ce of the corresponding blade against a corresponding tapered blade mounting face of t he rotor and lock the corresponding blade onto the rotor by frictional locking of the tapered blade mounting face and the tapered rotor mounting face. Each blade preferab ly has a square impact face with four cutting edges and the tapered blade mounting fa ce and tapered rotor mounting face match in four rotational positions so that each blade is rotatable to place any one of its four cutting edges on the outer periphery of the rotor.
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