滑块式万向联轴器工作时,月牙形滑块、小方轴、叉头、扁头之间产生摩擦,其摩擦面必须润滑。由于万向联轴器滑块受力状况复杂,表面接触应力大,摩擦面与外界相通,润滑油不易保存,因而较难建立良好的润滑条件。所以,滑块式万向联轴器润滑困难,滑块使用寿命短。常用的滑块式万向联轴器润滑方式有;人工定期加油和自动加油两种。人工定期加油润滑需停机,在摩擦面上进行人工涂油,其效果较差。自动加油润滑有稀油油箱式和干油轴瓦压注式等。稀油油箱式润滑装置结构如图1所示,在接轴叉头靠中间侧焊有一个圆形油箱,箱 Sliding universal coupling work, the crescent-shaped slider, small square shaft, fork, flat head between the friction, the friction surface must be lubricated. Due to the complicated situation of the universal coupling slider, the contact stress on the surface is large, the friction surface is communicated with the outside world, and the lubricating oil is hard to be preserved, so that it is difficult to establish good lubrication conditions. Therefore, sliding universal coupling lubrication difficult, short slider life. Sliding universal coupling lubrication methods commonly used; artificial regular refueling and automatic refueling two. Manual regular lubrication lubrication to be shut down, the friction surface of artificial oil, the less effective. Automatic refueling lubrication thin tank and dry oil pressure pad type and so on. Dilute oil tank lubrication device structure shown in Figure 1, in the middle of the fork shaft by welding a circular tank, box