Esi sikhokelo sibanzi siphonononga imiba ebalulekileyo yokukhetha okufanelekileyo umqa wecrane ongaphezulu kwiimfuno zakho ezithile. Siza kugocagoca kwiindidi ezahlukeneyo zemitha, izinto eziphembelela ukhetho lwayo, kunye nezona ndlela zilungileyo zokuqinisekisa ukhuseleko nokusebenza kakuhle. Funda indlela yokumisela umthamo ochanekileyo womthwalo, ubude bexesha, kunye nemathiriyeli yesicelo sakho. Nokuba uligcisa elinamava okanye usaqala ukuphonononga ilizwe lokunyuswa kwemizi-mveliso, esi sikhokelo siya kubonelela ngolwazi oluxabisekileyo.
Olu lolona hlobo luqhelekileyo lwe umqa wecrane ongaphezulu, ezaziwa ngokuba namandla aphezulu kumlinganiselo wobunzima. Ngokuqhelekileyo zenziwe ngentsimbi kwaye zilungele uluhlu olubanzi lwezicelo. Ukhetho luxhomekeke kwizinto ezifana nomthamo ofunekayo womthwalo kunye nobude bexesha. Ubalo oluchanekileyo lubalulekile ukuqinisekisa ukhuseleko. Imiqadi ye-I engachanekanga ingakhokelela kukusilela kolwakhiwo, ke ngoko hlala unxibelelana nenjineli yolwakhiwo ukuze uqinisekise ubungakanani obuchanekileyo.
Ukunikezela ngokunyuka komthamo wokuthwala umthwalo xa kuthelekiswa nemigangatho ye-I-standard, imiqadi ebanzi yeflange ilungele ukuphakamisa izicelo ezinzima. Iiflange zabo ezibanzi zibonelela ngokuzinza okukhulu kunye nokuchasana nokugoba. Zilukhetho oludumileyo lomsebenzi onzima I-crane ephezulu iinkqubo. I-Hitruckmall inikeza uluhlu olubanzi lwezisombululo kwizinto zokuphatha izixhobo.
Imiqadi yebhokisi, eyenziwe ngeepleyiti ezine ezidityanisiweyo ukuze zenze icandelo elimngxuma elinguxande, zomelele ngendlela engaqhelekanga kwaye zomelele. Bagqwesa kwizicelo ezifuna ubunzima obuphezulu be-torsional kunye nokuchasana nokuphambuka kwecala. Le miqadi inokuxhasa imithwalo enzima kakhulu kunye nobude obude. Nangona kunjalo, zihlala zibiza kakhulu kune-I-beams.
Eyona nto ibalulekileyo ngumthwalo omkhulu umqa wecrane ongaphezulu ifuna inkxaso. Oku akubandakanyi kuphela ubunzima bento ephakanyisiweyo kodwa kunye nobunzima be-crane ngokwayo kunye naluphi na uxinzelelo olongezelelweyo. Izibalo ezichanekileyo zomthwalo, kuthathelwa ingqalelo izinto zokhuseleko, zibaluleke kakhulu.
Umgama phakathi kwamanqaku enkxaso ye umqa wecrane ongaphezulu ichaphazela kakhulu ukhetho lwebholi. Izikhonkwane ezinde zifuna imiqadi enokuqina okukhulu kunye namandla okuthintela ukuphambuka okugqithisileyo. Lo mba ubalulekile ekuqinisekiseni imfezeko yesakhiwo sayo yonke inkqubo yecrane.
Intsimbi yeyona nto ixhaphakileyo kuyo imiqadi yecrane ngaphezulu ngenxa yamandla ayo kunye neendleko eziphantsi. Nangona kunjalo, ezinye izinto ezifana ne-aluminium alloys zinokuqwalaselwa kwizicelo ezithile apho ukunciphisa ubunzima yinto ephambili, nangona amandla anokuthotywa. Ukukhethwa kwezinto eziphathekayo kuxhomekeke kakhulu kwiimeko zokusingqongileyo kunye nohlobo lomthwalo ophathwayo.
Ukuhlolwa rhoqo kunye nokugcinwa kubalulekile ukuqinisekisa ukuqhubeka nokusebenza ngokukhuselekileyo I-crane ephezulu iinkqubo. Ukuthobela yonke imimiselo yokhuseleko efanelekileyo kunye nemigangatho kubalulekile. Ukuhlolwa kobuchwephesha kunokunceda ekuchongeni iingxaki ezinokwenzeka kwangethuba, ukuthintela iingozi kunye nokulungiswa kweendleko.
Ukukhetha umthengisi othembekileyo kubalulekile ekuqinisekiseni umgangatho kunye nokhuseleko lwakho imiqadi yecrane ngaphezulu. Khangela ababoneleli ngerekhodi eqinisekisiweyo, ukuzibophelela kulawulo lomgangatho, kunye noluhlu olubanzi lweenketho ezihambelana neemfuno zakho ezithile. I-Hitruckmall ngumboneleli okhokelayo wezixhobo zoshishino, kuquka umgangatho ophezulu I-crane ephezulu amacandelo.
| Uhlobo lweBeam | Umthwalo womthwalo | Ubuchule be-Span | Iindleko |
|---|---|---|---|
| I-Beam | Phakathi | Phakathi | Phantsi |
| Wide Flange Beam | Phezulu | Phezulu | Phakathi |
| Ibhokisi Beam | Phezulu kakhulu | Phezulu kakhulu | Phezulu |
Qaphela: Umthamo womthwalo kunye nesakhono se-span sinxulumene kwaye sixhomekeke kwimilinganiselo ethile kunye nemathiriyeli yomqadi. Soloko ujonga iinkcukacha zobunjineli kwisicelo sakho kanye.
Khumbula ukuhlala ubeka phambili ukhuseleko kwaye udibane neengcali eziqeqeshiweyo xa uyila kwaye uphumeza I-crane ephezulu iinkqubo.
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