| 摘要 |
PROBLEM TO BE SOLVED: To prevent the falling-off of a tooth used for a crusher, and to enable the easy replacement of a worn-out tooth. SOLUTION: A main tooth 15 for the crusher comprises; a fixed base 31 mounted to the outer circumferential surface of a drum 4; a tooth part 32 put on the fixed base 31; a joint pin 33 for fixing the tooth part 32 to the fixed base 31; and a gum sleeve 40 provided on the outer peripheral part of the joint pin 33. Through-holes 36 and 38 are bored in the fixed base 31 and the tooth part 32, respectively to make the joint pin 33 pass through. Annular grooves 39 are formed on the outer periphery of both ends of the joint pin 33, and a pair of opposed rings 44 are fitted into both grooves 39 on both sides of the sleeve 40. An annular raised ridge 41 projected in and outside the sleeve 40 is formed, and the outer periphery of the through-hole 36 of the fixed base 31 and of the joint pin 33 are formed with annular recessed parts 42 and 43, respectively, to which the annular raised ridge 41 is fitted. COPYRIGHT: (C)2003,JPO
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