对于发动机标定功率为37～51 kW的农业轮式拖拉机,按GB/T 1593.1标准规定,其后置式三点悬挂装置的主要尺寸和参数应按1类来设计。但由于用户在实际使用过程中,因地域土质的差异和作业机具的不同,要求拖拉机不仅可以挂接1类尺寸机具,而且能方便实现挂接2类尺寸机具。采用一种拖拉机下悬挂点1类和2类球形接头能快速方便互换的设计方法,以满足后置式三点悬挂装置1、2类球形接头的互换。 For agricultural wheeled tractors with an engine rated power of 37-51 kW, the main dimensions and parameters of the rear three-point suspension should be designed as Class 1 according to GB / T 1593.1. However, due to the differences in the soil quality and the different work tools, the tractor is required not only to attach a class 1 size implement but also to be able to conveniently attach 2 types of size implements in actual use. A tractor under the suspension point Class 1 and Class 2 ball joints can be quickly and easily interchangeable design method to meet the post-type three-point suspension devices Class 1, 2 ball joint interchangeability.