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 五一牌手拉葫蘆脫鉤現象，一直都沒有得到完全的解決。不少工程在進行過程中，發生手拉葫蘆的上鉤從上鉤橫梁中突然脫落的事故。脫鉤一般指的是在吊鉤橫梁一側固定滾珠的螺釘已經從螺釘孔內退出，滾珠通過螺釘孔全部跑到了環槽外。針對上述手拉葫蘆脫鉤現象，主要有以下四種解決方案：
"51 players pull gourd" decoupling phenomenon, has not been completely resolved. In the course of many projects, the hook of the hand hoist came to an abrupt fall from the hooked beam. Decoupling generally refers to the ball on the side of the hook beam fixed ball screws have been removed from the screw hole, the ball through the screw hole all ran out of the ring groove. In view of the above hand chain hoist decoupling phenomenon, there are four main solutions:

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       1、按起重工具管理規定對手拉葫蘆做其額定負荷1.25倍起重量的負荷試驗。2、對于新購進的手拉葫蘆等起重工具在投入使用前一定要作全面檢查，尤其要重點檢查吊鉤橫梁端部螺釘孔的鉚固情況。3、選擇手拉葫蘆等起重工具一定要選購正規廠家生產的合格產品。4、檢查好吊鉤的安全卡扣，是否牢靠有彈性。
1, according to lifting tools management regulations, the opponent pull the hoist to do its rated load 1.25 times the weight of the load test. 2, for the newly purchased hand hoist and other lifting tools, before being put into use, must make a comprehensive inspection, in particular, should focus on checking the end of the hook beam screw hole rivet solid situation. 3, choose hand hoist and other lifting tools, we must buy regular manufacturers of qualified products. 4. Check the safety buckle of the hook, whether it is firm and elastic.
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