750公斤空气锤的联轴器结构如图1所示,它有10个均匀分布的连接螺钉。上述设备我厂已使用二十多年,经过几次大修,缸径变大了,负荷也增大了。螺钉头部尺寸为φ30毫米(见图2),每边仅压住牛皮垫2.5毫来,因此在大冲击交变载荷 750 kg air hammer coupling structure shown in Figure 1, it has 10 evenly distributed connection screws. I plant the above equipment has been used for more than 20 years, after several overhauls, larger bore, the load has also increased. Screw head size φ30 mm (see Figure 2), each side of the leather pad only 2.5 millivolts, so in a large impact alternating load