Muaj ntau hom shackles, uas tau muab faib ua lub nplhaib ncaj, D-shaped thiab horseshoe-puab raws li cov duab ntawm lub nplhaib; muaj ob hom ntsia hlau hom thiab hloov tau tus pin hom raws li daim ntawv txuas ntawm tus pin thiab lub nplhaib. Tus pin thiab lub nplhaib ntawm cov ntsia hlau shackle yog threaded. Muaj ob hom pins nyob rau hauv shackle, uas yog ncig thiab oval. Nws yog nyob rau hauv kev sib cuag nrog lub nplhaib lub qhov thiab tuaj yeem rub tawm ncaj qha. D-hom shackle feem ntau yog siv rau kev sib txuas ntawm ib leeg; B-hom shackle feem ntau yog siv rau ntau lub ceg tawv. BW, DW hom shackles yog tsuas yog siv nyob rau hauv lub sij hawm uas lub rigging yuav tsis tsav tus pin ncej tig; BX, DX hom shackles yog tsuas yog siv nyob rau hauv lub sij hawm uas tus pin ncej yuav tig thiab lub sij hawm ntev installation.
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.
