有的成品吊钩往往不设防止钢丝绳自行滑脱的装置,故必须自行制作。经多年实践,我们摸索出如图1所示的防脱装置,这种装置较其它结构使用方便,耐用且安全可靠,现略述如下:钢箍2紧箍在吊钩1的适当位置上,二侧各焊上一只半轴3。用圆钢制成的U形锤二头适当拍扁后打出圆孔且套入半轴。防脱板5亦制成U形,二端分别与U形锤二端相焊接。由于U形 Some finished hook often do not have to prevent self-slipping wire rope device, it must be produced. After many years of practice, we figure out the anti-off device shown in Figure 1, this device is more convenient to use than other structures, durable and safe and reliable, are summarized as follows: Steel hoop 2 in the hoop 1 in the appropriate position, Welding on both sides of a half shaft 3. Made of round steel U-shaped hammer two appropriate shot flat after round hole and set into the semi-shaft. Flux-proof plate 5 is also made of U-shaped, the two ends were welded to the two ends of the U-shaped hammer. Due to the U shape