To draw force vector instead of force polygon is a method of more simply in defining a mathematical model for force analysis and synthesis of every kinds of wedge mechanism, and by which the force analysis and synthesis can be done on the screen of a microcomputer. 这种做力矢量线代替做力多边形的方法,可以十分简明地建立各种类型楔面机构力分析和综合的数学模型,而且可在微型计算机屏幕上进行楔面机构力分析和综合。
Stochastic forces of coal, pretension force of plow chain and sprocket polygon effect make plow chain under high dynamic stress. 随机的煤壁作用力、刨链预紧力、链轮多边形效应等作用使刨链承受较高的动应力。