一、概述在设计拖拉机及工程运输车辆最终传动(即轮边减速部分)的轮边大齿轮与半轴的花键结构中,通常采用渐开线花键联接,轴向用端盖和螺栓或螺母固定如图1。但由于受到车辆频繁起动、制动的冲击载荷和花键副之间的配合间隙以及轮边大齿轮与半轴之间传递的扭矩大等特点,造成轴向固定螺母脱落,花键接触面压溃和剥落,影响车辆正常工作。 I. Overview In the design of the final drive tractors and engineering transport vehicles (that is, the wheel gear deceleration part) of the wheel gear and semi-shaft spline structure, usually with involute spline coupling, with axial end caps and bolts or Nut fixed in Figure 1. However, due to the frequent start of the vehicle, the impact load of the brake and the mating gap between the spline pairs and the large torque transmitted between the wheel gear and the semi-axle, etc., the axial fixing nut is dropped off and the spline contact surface pressure Collapse and peeling off, affecting the normal operation of vehicles.