Esi sikhokelo sibanzi siphonononga ukuntsonkotha kwe Iikhreyini zebhulorho ephezulu, ukubonelela ngolwazi olubalulekileyo lokwenza izigqibo ezizizo malunga nokhetho, ukusebenza kunye nokugcinwa. Siza kujongana neentlobo ezahlukeneyo, imilinganiselo ephambili, iingqwalasela zokhuseleko, kunye nezinto ekufuneka ziqwalaselwe xa udibanisa a phezu kwebhulorho crane kwindawo yakho yokusebenza. Funda indlela yokuphucula iinkqubo zakho zokuphatha izinto ngesisombululo esifanelekileyo secrane kwiimfuno zakho ezithile.
Ibhanti enye Iikhreyini zebhulorho ephezulu ziphawulwa ngoyilo lwazo olulula kunye neendleko eziphantsi. Zikulungele ukuphakamisa amandla kunye nezicelo apho i-headroom ilinganiselwe. Ezi cranes zihlala zifumaneka kwiiworkshop ezincinci kunye neefektri. Uyilo lwabo oludityanisiweyo lubenza bafanelekele izithuba ezimxinwa xa kuthelekiswa neekhreyini eziphindwe kabini. Nangona kunjalo, umthamo wabo womthwalo uphantsi.
Ibhanti kabini Iikhreyini zebhulorho ephezulu zinika amandla okuphakamisa aphezulu kwaye ziyilelwe imithwalo enzima. Zibonelela ngozinzo olukhulu kwaye ziqhele ukusetyenziswa kwiindawo ezinkulu zemizi-mveliso apho iimfuno zokunyusa zixhaphakile. Ulwakhiwo olomeleleyo lwe-double girder cranes luvumela izicelo ezifuna kakhulu. Ngelixa zibiza kakhulu kuneekhreyini zegirder enye, lolona khetho lukhethwayo lokuphakamisa umsebenzi onzima.
Ngaphandle koyilo olulodwa kunye nolubini lwebhanti, kukho ezikhethekileyo Iikhreyini zebhulorho ephezulu njenge: i-jib cranes (ehlala isetyenziselwa iimfuno ezincinci zokuphakamisa indawo yendawo), i-cantilever cranes (eyandisa ngaphaya kwesakhiwo senkxaso), kunye ne-semi-gantry cranes (ukudibanisa imiba yebhulorho kunye ne-gantry cranes). Ukhetho luxhomekeke kakhulu kwiimfuno ezithile zesicelo.
Ukukhetha okufanelekileyo phezu kwebhulorho crane ifuna ukuqwalaselwa ngononophelo kwiinkcukacha ezininzi eziphambili:
| Inkcazo | Inkcazo | Ukubaluleka |
|---|---|---|
| Ukuphakamisa amandla | Obona bunzima bunokuphakanyiswa yikhreyini. | Ibalulekile ekumiseleni ukufaneleka kwemisebenzi ethile. |
| Ispan | Umgama phakathi kweekholamu zenkxaso yecrane. | Imisela indawo yokugubungela i-crane. |
| Phakamisa ubude | Umgama othe nkqo ikhreyini inokuphakamisa umthwalo. | Kubalulekile ukulungiselela ukuphakama kwesakhiwo kunye neemfuno zokupakisha izinto. |
| Hook Height | Umgama othe nkqo ukusuka emgangathweni ukuya kwihuku xa ikhreyini ikweyona ndawo isezantsi. | Iphembelela imvulophu yokusebenza kwecrane. |
Ukhuseleko lubalulekile xa usebenza Iikhreyini zebhulorho ephezulu. Ukuhlolwa rhoqo, uqeqesho lwabaqhubi, kunye nokuthotyelwa kwemigaqo yokhuseleko kubalulekile. Ukugcinwa okufanelekileyo, kubandakanywa ukuthanjiswa kunye nokuhlolwa kwecandelo, kwandisa ubomi be-crane kwaye kunciphisa umngcipheko weengozi. Ukufumana izikhokelo ezibanzi zokhuseleko kunye nezenzo ezilungileyo, jongana nemigangatho kunye nemigaqo yoshishino efanelekileyo.
Kubalulekile ukukhetha umthengisi othembekileyo. Umthengisi othembekileyo uya kunika isikhokelo seengcali, anikezele uluhlu lweekhranethi ukuze zihambelane neemfuno ezahlukeneyo, kunye nokubonelela ngenkxaso eqhubekayo kunye nokugcinwa. Xa ukhangela a phezu kwebhulorho crane, qwalasela izinto ezifana nodumo, amava, iwaranti, kunye nenkonzo yasemva kokuthengisa. Kukhetho olubanzi lweekhreyini ezikumgangatho ophezulu kunye nezixhobo ezinxulumeneyo, cinga ngokujonga iinketho ezivela kubaboneleli abathembekileyo abafana nabo bafumaneka I-Hitruckmall. Banikezela ngoluhlu olwahlukeneyo lwezisombululo ukuhlangabezana neemfuno ezahlukeneyo zokuphatha imathiriyeli yamashishini. Khumbula ukuhlala ubeka phambili ukhuseleko kwaye ukhethe i-crane efanelekileyo kwisicelo sakho esithile.
Esi sikhokelo sisebenza njengesiqalo sokuqonda Iikhreyini zebhulorho ephezulu. Uphando olongezelelweyo kwiimodeli ezithile zecrane kunye nokubonisana neengcali zeshishini kuyacetyiswa ngaphambi kokuba wenze isigqibo sokugqibela sokuthenga.
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