犁的支承件可以是滑板、地侧板、支持轮或限深轮,也可以是与犁刚性联结的切刀(见图1)。根据支承件支持在土壤的一个表面或两个表面,该支承件可以限制犁的一个自由度(见图1,a、c、f)两个自由度(见图1,b、d、e)。对于地侧板、滑板和轮子等支承件,只能在一个方向上限制犁的自由度。而对于切刀和带凸缘的轮子,由于在土壤中切开一条缝隙,而具有两个侧向支承面,所以这样的 The plow support can be a slide, a floor, a support wheel or a depth stop, or it can be a knife rigidly attached to the plow (see Figure 1). The support may limit one degree of freedom of the plow (see Figure 1, a, c, f) by two degrees of freedom (see Figures 1, b, d, e), supported on one or both surfaces of the soil, . For floor plates, skateboards, wheels, etc., the plow’s freedom can only be limited in one direction. In the case of cutters and flanged wheels, however, since there are two lateral bearing surfaces due to the slitting of a gap in the soil,