国内外振动筛众多，其中双质体四轴承振动筛以 其独特性引起了国内研究者的注意。最著名的双质体四轴承振动筛是美国的Ｐｏｒｔｅｃ公司Ｐｉｏ ｎ ｅ ｅ ｒ分公司的Ｍｅｓａｂｉ振动筛。其结构如图１所示。国内生产此类振动筛相当少，而国外很普遍。我国大概９０年代才开始仿制 There are many vibrating screens at home and abroad, of which the double plastid four-bearing vibrating screen has attracted the attention of domestic researchers due to its uniqueness. The most famous double plastid four-bearing shale shaker is the Mesabi shaker at Portec’s Pioneer division in the United States. The structure shown in Figure 1. Domestic production of such shale is quite small, but very common abroad. About 90s in our country began to imitation