1、卷筒開裂可能因為結構不合理，鋼板較薄，強度富裕度偏低，筒殼材質(zhì)較差，均采用鋼板。
Ningbo lifting platform roll cracking probably because of the irrational structure, steel thin, low intensity affluence, poor drum shell material, are used in steel.

2、升降平臺技術參數(shù)較低，而目前使用負荷都較滿，甚至有些單位長期超負荷使用。升降平臺的卷筒在循環(huán)應力作用下產(chǎn)生疲勞裂紋，擴展的結果就造成卷簡鋼板或焊縫的開裂。
Ningbo lifting platforms low technical parameters and load current use are relatively full, and even some units of long-term overload. Reel lifting platforms fatigue cracks under cyclic stress,the result of expansion and causing cracking or weld steel roll Jane.

3、升降平臺在使用時應立即在裂紋端部打上止裂孔，將裂紋截住， 使其不再向前擴展，然后進行補焊和加固。最徹底的辦法是對升降平臺卷筒進行技術改造，可將筒殼更換成新結構的筒殼，或?qū)⒄麄€主軸裝置更換成新結構的主軸裝置。
Ningbo lifting platform in use should immediately stop the crack tip marked hiatus, will crack stopped, it is no longer extended forward, then patching and reinforcement. The most thorough way is to roll lifting platform for technological innovation, you can replace the cartridge shell into a tube shell of the new structure, or to replace the entire spindle apparatus into the new structure of the spindle apparatus.