Boom cranes: (1) Lub cantilever cranes muaj peb hom: hom qauv, hom phab ntsa, thiab sib npaug hom cranes. 1 Kem hom cantilever crane yog ib qho cantilever uas yuav tuaj yeem tsiv ib puag ncig ntawm lub hauv paus uas ruaj ntawm lub hauv paus, los yog lub cantilever txuas nrog rau sab. Ib qho cantilever crane uas muaj ib kem thiab ib qho kev nrawm nrawm uas tig rov qab ua ke nrog rau qhov chaw ntsug nruab nrab hauv qhov kev txhawb nqa. Nws tsim nyog rau lub sijhawm uas lub peev xwm lifting yog qhov me me thiab cov kev pabcuam khwv tau los yog khov-puab. Nws yog siv rau kev thauj khoom thiab thauj cov khoom ntim xws li tshuab cuab yeej. Lub
Kem-hom cantilever cranes feem ntau siv hluav taws xob saw hoists raws li lawv txoj kev tshem tshuab thiab kev khiav hauj lwm mechanism, thiab lawv tsis tshua siv hlau hlua fais hoists thiab saw hoists. Cov kev ua hauj lwm qeeb thiab kab rov tav yog cov phau ntawv feem ntau, thiab hluav taws xob siv hluav taws xob thaum siv lub tshuab nyhav nyhav loj. 2 Crane-on-crane yog ib qho khoom siv rau hauv cov phab ntsa, los yog ib qho crane cantilever uas khiav tau raws li cov phab ntsa los yog lwm yam kev txhawb nqa. Kev siv cov phab ntsa cov cranes yog hauv kev cob qhia lossis cov chaw khaws cia nrog cov kis loj thiab cov tsev loj, thiab feem ntau yog tsim rau thaum cov haujlwm ua haujlwm nyob ze ntawm phab ntsa yog nquag. Cov phab ntsa cranes feem ntau yog siv rau hauv nrog rau saum taub hau beam lossis choj cranes thiab ua hauj lwm nyob rau hauv ib qho chaw qub uas nyob ze ntawm cov phab ntsa. Lawv yuav tsum tuav lub teeb nrig thiab cov khoom me me, thiab qhov loj loj yog nqa los ntawm nqaj lossis choj cranes. 3 Kev ntsuas kom muaj kev sib npaug zos hu ua crane balancing, nws yog kev siv plaub-txoj kab sib txuas ua haujlwm kom ua kom muaj qhov load thiab sib npaug tseem ceeb ua kom muaj kev sib npaug, koj tuaj yeem siv ntau hom slings yooj yooj yim thiab yooj yim lifting load hauv qhov chaw uas muaj peb sab. Tshuav nyiaj crane yog ib qho yooj yim thiab hloov tau yooj yim, thiab nws yog ib qho khoom zoo nrawm rau nqa cov khoom me me. Nws yog dav siv rau hauv kev thau khoom thiab kev tshem tawm cov cuab yeej siv hauv cov khoom siv hauv kev ua haujlwm, cov workpieces hauv cov txheej txheem, cov kab tsis siv, cov kab ntau ntxiv, cov thawv rau sand, thiab cov khoom sib dhos. Cov chaw nres tsheb, cov ntaub pua tsev, chaw cia khoom thiab lwm lub sijhawm
