我厂旧式的牛头刨床还很多,而这些刨床在工作时摇臂及中心大齿轮又经常发生事故(断裂)。为了发挥旧设备的作用,我们对事故进行了分析研究,并加装自动离合器保险装置。经实际使用证明,效果良好。我们认为,发生事故的原因主要是两个:1)吃刀量过大或刀具撞击了工作物;2)行程过大并超过规定而使摇臂撞击了内部的齿轮轴。根据以上原因,我们就在原动齿轮轴上装一个离合器(如图1所示),即可避免事故的发生。构造:1是塔轮装在双键轴2上。3是离合套,装在双键轴2上。6是套盘,用 I plant a lot of old shaper planing machine, and these planer rocker and center gear at work and often accidents (fracture). In order to play the role of the old equipment, we conducted an analysis of the accident, and install automatic clutch safety device. The actual use of proof, the effect is good. In our opinion, there are two main reasons for the accident: 1) the amount of knife is too large or the tool hits the work piece; 2) the stroke is too large and exceeds the requirement that the rocker arm impacts the inner gear shaft. Based on the above reasons, we installed a clutch on the driving gear shaft (shown in Figure 1), to avoid the accident. Structure: 1 is a double wheel mounted on the shaft 2. 3 is a clutch set, mounted on the double bond shaft 2. 6 is a set of disk, use