我矿在使用波兰KU-1206B挖掘机的过程中,其换向机构轴上的链轮有次发生轴向窜动。当锥形离合器壳接合时,链轮向左窜动;当离合器分离时,则链轮跟着离合器壳向右移动,使离合器分离困难。拆检后发现,装在换向机构轴上的两片定位半环和轴发生相对运动,产生磨损,使轴上的原20毫米宽的定位槽磨宽至29毫米,因此失去了定位作用,使链轮窜动。 During mine use of the Polish KU-1206B excavator, axial turbulence occurred in the sprocket on the reversing mechanism shaft. When the conical clutch shell is engaged, the sprocket wheel flies to the left; when the clutch is disengaged, the sprocket wheel moves to the right following the clutch shell, making it difficult to disengage the clutch. After the inspection, it was found that the two positioning half rings mounted on the shaft of the reversing mechanism were relatively moved with respect to the shaft, resulting in wear, and the original 20 mm wide positioning groove on the shaft was widened to 29 mm, thus losing the positioning effect. Sway the sprocket.