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检修ZL50型装载机的转向器时,常会遇到转向器的齿扇轴有扭曲、折断现象。这不仅与轴的材料有关,而且与机械的使用和转向系统的调整有关。齿扇轴扭曲的根本原因是承受的扭矩过大。齿扇轴的固定螺母松动,反馈杆调整不当,在机械拖动过程中没有适时转动转向盘,都可造成扭矩过大。当齿扇轴上固定摇臂的螺母松动时,摇臂与齿扇轴的锥形花键配合会松动,使摇臂上的内花键与齿扇轴上外花键的接触面积减小,单位面积上的受力增大,从而导致花键扭曲。因此,在保养检修机械时,将摇臂花键装入摇臂孔后,应使花键端面低于花键孔2～5 mm,须拧紧摇臂的固定螺母,并不得漏装摇臂与固定螺母之间的弹簧垫片。
When repairing the steering gear of ZL50 loader, the gear shaft of the steering gear often has distortion and breaking phenomenon. This is not only about the material of the shaft, but also about the use of the machine and the adjustment of the steering system. The root cause of tooth shaft distortion is excessive torque. Tooth fixed gear nut shaft loose, improper adjustment of the feedback lever, the mechanical drag in the absence of timely rotation of the steering wheel, can cause excessive torque. When the nut of the rocker arm on the gear shaft is loosened, the conical spline fit of the rocker arm and the gear shaft will loosen, so that the contact area between the inner spline on the rocker arm and the outer spline on the gear shaft decreases, Force per unit area increases, resulting in spline distortion. Therefore, in the maintenance of machinery maintenance, the rocker arm spline into the rocker arm hole, the spline end should be below the spline hole 2 ~ 5 mm, to be tightened arm fixed nut, and should not miss the rocker and Spring washers between fixing nuts.