Na u nahana ho reka crane e le 'ngoe ea girder overhead? Ha u reka crane e le 'ngoe ea borokho, u tlameha ho nahana ka polokeho, ts'epahalo, katleho le tse ling. Mona ke lintho tse kaholimo tseo u ka li nahanang e le hore u reke crane e nepahetseng bakeng sa kopo ea hau.
Crane e le 'ngoe ea girder overhead crane e boetse e bitsoa single girder bridge crane, single girder overhead crane, EOT crane, top run overhead crane, joalo-joalo.
Li-cranes tsa EOT tsa girder li na le melemo e mengata:
E theko e tlase ka lebaka la thepa e fokolang e sebelisoang ha ho etsoa le moralo o bonolo oa trolley
Khetho e ngata ea moruo bakeng sa lits'ebetso tse bobebe le tse mahareng
Theola meroalo holim'a mohaho oa hau oa mohaho le motheo
Ho bonolo ho kenya, ho sebeletsa le ho hlokomela
Hobane crane ea borokho e le 'ngoe ke sehlahisoa se ikhethileng, mona ke lintlha tse ling tse hlokang ho netefatsoa ke Moreki:
1.Ho Phahamisa Bokhoni
2.Span
3. Ho phahamisa bophahamo
4. Karolelano, nako ea mosebetsi, lihora tse kae ka letsatsi?
5. Kerene ena e le 'ngoe ea borokho e tla sebelisoa ho phahamisa thepa ea mofuta ofe?
6. Motlakase
7. Moetsi
Mabapi le moetsi, o hloka ho nahana ka:
· ho kenya
· tšehetso ea boenjiniere
· tlhahiso ea tloaelo ho latela litlhaloso tsa hau tse ikhethang
· mola o felletseng oa likarolo tse ling
· litšebeletso tsa tlhokomelo
· litlhahlobo tse etsoang ke litsebi tse netefalitsoeng
· litekolo tsa kotsi ho ngola boemo ba li-cranes le likarolo tsa hau
· koetliso ea basebetsi
Joalokaha u ka bona, ho na le lintho tse 'maloa tseo u lokelang ho li nahana ha u reka crane e le 'ngoe ea girder. Ho SEVENCRANE, re fana ka mefuta e mengata e fapaneng ea li-cranes tsa borokho tse tloaelehileng le tse tloaelehileng, li-hoists le likarolo tsa hoist.
Re rometse li-crane le li-crane linaheng tse ngata tsa Asia, Europe, Amerika Boroa, Amerika Leboea, Afrika le Middle East. Haeba setsi sa hau se hloka li-crane tse holimo bakeng sa lits'ebetso tse fapaneng, re na le li-crane tsa girder tse le 'ngoe bakeng sa hau.
Re rala le ho etsa li-crane le li-hoist ho latela maikutlo a bareki ba rona. Kenyelletso ea bona e thusa li-cranes le li-hoists tsa rona ho fana ka likarolo tse tloaelehileng tse eketsang tlhahiso, ho eketsa tlhahiso, ho eketsa ts'ebetso le ho ntlafatsa polokeho.
