Iigiya ezinkulu ezijikelezayo zidlala indima ebalulekileyo kwiindlela zokusetyenziswa kolwandle, zibonelela ngokusebenza kakuhle nangokuhlala ixesha elide kwiinkqubo ezahlukeneyo zolwandle. Ezi giya zibonakaliswa ngamazinyo azo ajikelezayo, avumela ukubandakanyeka okuthambileyo kunye nengxolo encitshisiweyo, nto leyo eyenza ukuba zilungele iindawo zolwandle apho ukuthembeka kubalulekile khona.

Enye yezona ndlela ziphambili zokusebenzisa ii-helical gear ezinkulu kushishino lolwandle kukwiinkqubo zokuqhubela phambili. Zisetyenziswa kwiibhokisi zegiya zeenqanawa kunye neenqanawa ezingaphantsi kwamanzi, ziguqula amandla enjini abe ngamandla okujikeleza afunekayo ukuhambisa iinqanawa emanzini. Amandla ee-helical gears okusingatha imithwalo ephezulu ngelixa zigcina ukusebenza kakuhle aphucula ukusebenza kunye nokuthembeka kwezi nqanawa zaselwandle.

Ukongeza, iigiya ezinkulu ezijikelezayo zifumaneka rhoqo kwii-winch kunye nee-hoists, ezibalulekileyo kwimisebenzi yokubeka iinqanawa kunye nokuphathwa kwemithwalo. Uyilo lwazo oluqinileyo luqinisekisa ukuba ziyakwazi ukulawula imithwalo enzima kwaye zimelane nokuguguleka, nto leyo ebalulekileyo kwiimeko ezinzima zaselwandle. Oku kuthembeka kunciphisa iindleko zokungasebenzi kunye nokugcinwa, nto leyo eyenza ukuba zibe lukhetho olukhethwayo kubakhi beenqanawa kunye nabaqhubi.

Kwimeko yeerigi zokugrumba ezikude nolwandle, iigiya ezinkulu ezijikelezayo zibalulekile kwiimashini ezahlukeneyo, kubandakanya ukugrumba nezixhobo zokuphakamisa. Ukusebenza kwazo kakuhle kunceda ukuphucula inkqubo yokukhukula, ukuqinisekisa ukuba ukusetyenziswa kwamandla kuyancitshiswa ngelixa kwandiswa imveliso.

Lilonke, izixhobo ezinkulu ezijikelezayo zibalulekile kakhulu kwishishini leenqanawa, zinika amandla, ukusebenza kakuhle, kunye nobude bexesha. Njengoko ubuchwepheshe buqhubeka, indima yazo isenokukhula, iphucule ngakumbi imisebenzi yaselwandle kwaye inegalelo kwimisebenzi yaselwandle ekhuselekileyo nesebenzayo.