| 主权项 |
1. A multi-functional pair of crushing plates capable of self-trimming, comprising a fixed jaw plate and a movable jaw plate which form a V shape, wherein said fixed jaw plate and said movable jaw plate both have base boards; each of said base boards respectively has a plurality of teeth to form tooth peaks and tooth troughs; said tooth peaks and said tooth troughs respectively provided on said two base boards are arranged oppositely and intersectedly; each of said tooth troughs is 1.5-4 time wider than each of said tooth peaks; each of said tooth troughs has holes which are arranged in a column along a direction of a length of each of said tooth peaks on said base board opposite to said holes, wherein a total area of all said holes within each of said tooth troughs is 40%-80% of a total area of each of said tooth troughs, in such a manner that said tooth troughs and said tooth peaks are alternatively worn during crushing, so as to accomplish self-trimming. |
