A cikin 10 BC, tsohon maginin Roman Vitruvius ya kwatanta injin ɗagawa a cikin littafinsa na gine-gine.Wannan na’ura tana da dunkulewa, saman mast din an sanye shi da jan karfe, ana gyara wurin mast din da igiya mai ja, sannan kuma igiyar da ke wucewa ta cikin jan karfe ana jan shi da winch don dauke abubuwa masu nauyi.
A cikin karni na 15, Italiya ta ƙirƙira crane jib don magance wannan matsala.Krane yana da ƙugiya mai karkata tare da jan hankali a saman hannu, wanda za'a iya ɗagawa da juyawa.
A tsakiyar karni na 18, bayan watt ya inganta kuma ya ƙirƙira injin tururi, ya samar da yanayin wutar lantarki don haɓaka injin.A cikin 1805, injiniya Glen Lenny ya gina rukunin farko na cranes don tashar jirgin ruwa na London.A shekara ta 1846, Armstrong na Ingila ya canza wani injin tururi a tashar jirgin ruwa na Newcastle zuwa na'ura mai amfani da ruwa.
A farkon karni na 20, an yi amfani da cranes na hasumiya a Turai.
Crane ya ƙunshi injin ɗagawa, injin aiki, injin luffing, injin kashe wuta da tsarin ƙarfe.Tsarin ɗagawa shine ainihin tsarin aiki na crane, wanda galibi ya ƙunshi tsarin dakatarwa da winch, gami da ɗaga abubuwa masu nauyi ta hanyar tsarin lantarki.
Ana amfani da tsarin aiki don matsar da abubuwa masu nauyi a tsaye da a kwance ko daidaita wurin aiki na crane.Gabaɗaya an haɗa shi da mota, mai ragewa, birki da dabaran.Na'urar luffing tana sanye take kawai akan crane jib.Girman girma yana raguwa lokacin da aka ɗaga jib kuma yana ƙaruwa lokacin da aka saukar da shi.An raba shi zuwa madaidaicin luffing da luffing mara daidaituwa.Ana amfani da injin kashe kisa don jujjuya bugu kuma ya ƙunshi na'urar tuƙi da na'urar ɗaukar kisa.Tsarin karfe shine tsarin crane.Babban sassan sassa kamar gada, boom da gantry na iya zama tsarin akwatin, tsarin truss ko tsarin gidan yanar gizo, wasu kuma na iya amfani da sashe karfe azaman katako mai goyan baya.
Lokacin aikawa: Oktoba-30-2021