一、问题的提出在长大货车中,走行部分有如下特点: 1.采用多轴(四轴或五轴)或几组多轴转向架。2.采用刚性构架和大刚度叠板弹簧,也就是说,所用弹簧的特性曲线较陡,很小的弹簧行程,会引起很大的弹簧载荷的变化。3.为了尽量使各轴载荷均匀,采用两轴均衡(四轴转向架)或三轴均衡(五轴转向架)装置。 First, the problem raised In the growing truck, the walking part has the following characteristics: 1. The use of multi-axis (four or five axes) or groups of multi-axis bogies. 2. The use of rigid frame and high stiffness stacked spring, that is, the spring characteristic curve is steep, a small spring stroke, will cause a great change in spring load. 3. In order to try to make each shaft load evenly, using two-axis equilibrium (four-axle bogie) or three-axis equilibrium (five-axle bogie) device.