Lub shackle yog cov cuab yeej sib txuas siv feem ntau hauv kev nqa cov haujlwm. Nws yog tsuas yog siv rau kev sib txuas qhov chaw uas nquag ntsia thiab tshem tawm hauv hoisting. Thaum lub rigging yog siv ua ke nrog cov nqaj, lub shackle yuav siv tau rau saum lub rigging es tsis txhob ntawm lub lifting nplhaib thiab lub lug phaj nyob rau hauv lub beam. Kev sib txuas rau kev yooj yim installation thiab tshem tawm. Shackles yog dav siv nyob rau hauv hluav taws xob fais fab, roj av, machinery, cua zog, tshuaj lom neeg kev lag luam, chaw nres nkoj, kev tsim kho thiab lwm yam lag luam, thiab yog ib qho tseem ceeb heev kev sib txuas qhov chaw nyob rau hauv hoisting.
