Lo mhlahlandlela ophelele usiza ukuthi uzulazule emakethe ama-cranes ayathengiswa, ehlanganisa yonke into kusukela ezinhlotsheni nasekucacisweni kuya ekuthengeni iseluleko nokunakekelwa. Sizohlola izinketho ezahlukene ze-crane ukuze sithole okokusebenza okufanele ngezidingo zakho ezithile kanye nesabelomali. Kungakhathaliseki ukuthi uyinkampani yokwakha, uchwepheshe wokudiliza, noma umuntu onephrojekthi ehlukile yokuphakamisa, le nsiza izokunika amandla okwenza isinqumo unolwazi.
Okhreyini bemibhoshongo yimishini emide, ebekayo evame ukusetshenziswa ezindaweni ezinkulu zokwakha. Banikeza umthamo ophezulu wokuphakamisa nokufinyelela, okubenza balungele izakhiwo eziphakeme kanye namaphrojekthi wengqalasizinda. Cabangela izici ezifana nobukhulu bokuphakama kwe-crane, ubude be-jib, nokuphakama okuzimele lapho ukhetha i-tower crane. Amamodeli ahlukene ayatholakala kubakhiqizi abahlukahlukene, ngalinye linezici zalo nezici. Isibonelo, i-Liebherr ne-Potain amabhrendi aziwayo anikezela ngezinhlobonhlobo zama-cranes ombhoshongo wezinhlelo zokusebenza ezahlukahlukene.
Iselula ama-cranes ayathengiswa nikeza ukuguquguquka okungenakuqhathaniswa. Ikhono labo lokuhamba kalula phakathi kwezindawo zemisebenzi libenza babe ukukhetha okudumile kwezinhlelo zokusebenza ezihlukahlukene. Lawa asukela kuma-cranes amancane ahamba yonke indawo afanele amaphrojekthi amancane kuya kuma-cranes amakhulu asezindaweni ezimbi ezikwazi ukuphakamisa imithwalo esinda kakhulu. Lapho ukhetha u-crane ohambayo, cabangela izici ezifana nendawo ozosebenza kuyo, umthamo wokuphakamisa odingekayo, kanye nokuhleleka okuphelele okudingekayo kumaphrojekthi akho athile. Bheka imikhiqizo efana ne-Grove ne-Terex ngezinketho ezinokwethenjelwa nezisebenza kahle kakhulu.
Ama-cranes angaphezulu atholakala ezimbonini nasezindaweni zokugcina impahla. Lawa ma-cranes agijima kumathrekhi futhi asetshenziselwa ukuhambisa izinto ezisindayo endaweni ethile. Ukukhetha u-crane ongaphezulu olungile kuhlanganisa ukunquma umthamo ofanele womthwalo, ubude besikhathi, nokuphakama kokuphakamisa ukuze kuhambisane nezidingo zesikhungo sakho. Abakhiqizi abaningi bahlinzeka ngezixazululo ezenziwe ngokwezifiso ezihambisana nezidingo zomuntu ngamunye.
Ngaphandle kwezinhlobo ezintathu eziyinhloko, ezinye ama-cranes ayathengiswa kufaka phakathi: ama-boom cranes (ukusebenza kahle kakhulu ezindaweni ezimpintshana), okhrayini abakhasayo (abafanele ukuphakamisa esindayo endaweni engalingani), kanye nama-knuckle boom cranes (aguquguqukayo ezinhlobonhlobo zezinhlelo zokusebenza). Uhlobo olungcono kakhulu kuwe luzoncika kakhulu ezidingweni zakho ezithile kanye nesabelomali. Ungathola zonke izinhlobo zama-cranes nezinye izinto zokwakha lapha.
Ukuthenga i-crane kuwutshalomali olubalulekile. Zihlole kahle izidingo zakho ngaphambi kokuthenga. Okucatshangelwayo okubalulekile kuhlanganisa:
Ungathola ama-cranes ayathengiswa ngeziteshi ezahlukahlukene:
Ukunakekelwa okuvamile kubalulekile ekusebenzeni isikhathi eside nokusebenza okuphephile kwanoma yimuphi u-crane. Ngaso sonke isikhathi landela izincomo zomkhiqizi zokunakekelwa nokuhlolwa. Izinqubo zokuphepha ezifanele kufanele zihlale zilandelwa izisebenzi eziqeqeshiwe. Ukunganaki ukulungiswa kungaholela ekulungiseni okubizayo nasezingozini zokuphepha ezingaba khona.
Ukukhetha i-crane efanele kuncike ezintweni ezihlukahlukene. Ukucatshangelwa ngokucophelela kwezidingo zakho ezithile, isabelomali, nendawo yokusebenza kuzoqinisekisa ukuthi ukhetha i-crane efanelekile yephrojekthi yakho. Ngaso sonke isikhathi beka phambili ukuphepha kanye nezinqubo zokunakekela ezifanele.
| Uhlobo lwe-Crane | Isicelo Ideal | Izinzuzo | Ububi |
|---|---|---|---|
| Tower Crane | Ukwakhiwa okuphezulu | Ukufinyelela okuphezulu, umthamo ophezulu | Ukuhamba okulinganiselwe |
| I-Mobile Crane | Izicelo ezahlukahlukene, indawo ehlukahlukene | Okuhlukahlukene, iselula | Ukufinyelela okuphansi kune-tower cranes |
| I-Overhead Crane | Izitolo, izimboni | Ukuphatha impahla esebenzayo ngaphakathi kwendawo echaziwe | Ukuhamba okulinganiselwe ngaphandle kwamathrekhi |
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