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东方红—75(54)推土机后轴为最终传动装置大齿轮和驱动轮的支承轴,主要受到履带通过驱动轮对它的拉力和冲击力。尤其当机车高速行驶、超越障碍、超载作业或在履带与驱动轮之间填塞硬物,强行开车复轨时,后轴受力急剧增加。由于后轴两侧均系悬臂结构,受力点距支承点远,力臂长,履带对后轴的拉力和冲击力所产生的弯曲力矩亦大,故后轴悬臂端根部
Dongfanghong -75 (54) The rear axle of the bulldozer is the supporting shaft of the final drive bull gear and drive wheel, and is mainly subjected to the pulling force and impact force of the crawler wheel through the drive wheel. Especially when locomotives are driving at high speed, overtaking obstacles, overloading the work or filling hard objects between the crawler and the driving wheel, the rear axle force increases sharply when forced to drive the second track. As both sides of the rear axle are cantilever structure, the force point away from the support point, arm length, crawler on the rear axle of the tension and impact force generated by the bending moment is large, so the rear axle cantilever end