重慶升降平臺工作時(shí)，隨著(zhù)吊籠上下運動(dòng)，隨行電纜同時(shí)盤(pán)出或盤(pán)入圓形電纜籠，在做圓周形的盤(pán)入或盤(pán)出過(guò)程中，芯線(xiàn)和外層橡皮護套之間會(huì )發(fā)生相對位移。由于升降平臺各芯線(xiàn)位移的大小不同且不能復原，使用了一段時(shí)間后，某一根（或幾根）芯線(xiàn)就會(huì )在電纜不同部位呈U型局部堆積，最終產(chǎn)生鼓包現象，接著(zhù)該處的外皮出現破損，進(jìn)而出現斷芯、漏電等現象。

Ningbo lifting platform when working with the cage up and down movement, while the trailing cable tray or plate into a round cable cage, in a circular shape into a disk or disk out of the process, will be between the core and the outer rubber sheath relative displacement. Due to the different sizes of the core wire Ningbo lifting platform displacement and can not be recovered after use for some time, a one (or several) of the core wire will be in different parts of a U-shaped cable local accumulation, ultimately generating bulge phenomenon, then the the emergence of the damaged skin, then there broken core, leakage and other phenomena.