Esi sikhokelo sibanzi siyaphonononga emva koko udavit cranes, ezibandakanya ukusebenza kwazo, izicelo, iingqwalasela zokhuseleko, kunye neendlela zokukhetha. Siza kuphonononga kwiinkcukacha ezahlukeneyo emva koko udavit crane imodeli, ibonelela ngemibono ukukunceda wenze izigqibo ezinolwazi malunga neemfuno zakho zokuphakamisa. Funda malunga noncedo lokukhetha a emva koko udavit crane kwaye ufumanise ukuba ezi zixhobo zinamandla kodwa ziguquguqukayo zinokuphucula njani ukusebenza kwakho.
Emva koko davit cranes luhlobo lwekhreyini eyenzelwe ukuphakamisa kunye nokwehlisa imithwalo, rhoqo kwiindawo ezivaliweyo okanye apho ukuguqulwa kubaluleke kakhulu. Baziwa ngoyilo lwabo oludityanisiweyo, ukusetyenziswa ngokulula, kunye nomthamo wokuphakamisa ophezulu xa kuthelekiswa nobukhulu bazo. Ezi cranes zikholisa ukuba nengalo ejikelezayo (i-davit) esuka kwisiseko esisisigxina, evumela uluhlu olubanzi lwentshukumo ngaphakathi kwiradiyasi yokusebenza kwayo. I-Thern, umenzi okhokelayo wezixhobo zokuphakamisa, unikezela uluhlu olubanzi lwe emva koko udavit cranes ukuhlangabezana neemfuno ezahlukeneyo zamashishini. Iimodeli ezininzi zifakwe ngokulula kwaye zihlanganiswe kwizakhiwo ezikhoyo.
Iikhreyini ze-Thern knuckle boom davit zinika ubhetyebhetye olukhethekileyo ngenxa yoyilo olucacisiweyo lwe-boom. Oku kuvumela ukubeka indawo echanekileyo yomthwalo, nakwiindawo ezingathandekiyo. Ukukwazi kwabo ukufikelela kwimithintelo kubenza balungele usetyenziso olwahlukeneyo. Bahlala bethandwa ngenxa yeenyawo zabo ezihlangeneyo.
I-Tern telescopic boom davit cranes bonisa i-boom eyandisa kwaye ihoxise, inikezela ukufikelela okuhlengahlengisiweyo kunye nokuphakama kwamandla. Oku kubenza baziqhelanise neemfuneko zomsebenzi ezahlukeneyo. Ezi cranes zihlala zizingca ngomthamo ophezulu wokuphakamisa kuneemodeli ze-knuckle boom, ezilungele imithwalo enzima. Ukukhetha phakathi kwezi ntlobo kuxhomekeke kakhulu kubunzima obuthile kunye neemfuno zokufikeleleka kweprojekthi.
Emva koko davit cranes zifumaneka kuzo zombini iimodeli zemanuwali nezombane. Iikhreyini ezenziwa ngesandla ngokuqhelekileyo zisebenzisa iikranki zesandla ukuphakamisa nokwehlisa, ngelixa iikhreyini zombane zisebenzisa iimotor kunye nolawulo ukuze zisebenze ngokutyibilikayo, ngokufanelekileyo. Ukhetho phakathi kwe-manual kunye nombane luxhomekeke kwizinto ezifana nobunzima bemithwalo ephakanyiswayo, ukusetyenziswa rhoqo, kunye nenqanaba elifunekayo lokuzenzekelayo. Iimodeli zombane zinciphisa kakhulu ukukhathala komsebenzisi kwizicelo eziphezulu.
Ukukhetha okufanelekileyo emva koko udavit crane kubandakanya ukuqwalasela ngenyameko iinkalo eziliqela:
Ukhuseleko lubaluleke kakhulu xa usebenza nayiphi na emva koko udavit crane. Hlala uthobela izikhokelo zabenzi kunye nemigaqo yokhuseleko efanelekileyo. Ukuhlolwa rhoqo, uqeqesho olufanelekileyo lwabaqhubi, kunye nokusetyenziswa kwezixhobo ezifanelekileyo zokuzikhusela (PPE) zibalulekile.
Emva koko davit cranes fumana izicelo kumashishini awohlukeneyo, kuquka:
Kumgangatho ophezulu emva koko udavit cranes kunye nesikhokelo sobuchwephesha, qwalasela ukuqhagamshelana nabanikezeli abathembekileyo. Kukhetho olubanzi kunye namaxabiso akhuphisanayo, jonga iinketho ezifana nezo zikhoyo I-Hitruckmall. Banikezela ngoluhlu lwezixhobo ezihambelana neemfuno ezahlukeneyo kwaye zibonelela ngenkxaso ebalaseleyo yabathengi. Khumbula ukusoloko uthelekisa amaxabiso kunye neempawu phambi kokuba wenze isigqibo sokuthenga.
| Uphawu | I-Knuckle Boom | I-Telescopic Boom |
|---|---|---|
| Ukuba bhetyebhetye | Egqwesileyo | Kulungile |
| Fikelela | Phakathi | Enkulu |
| Ukuphakamisa amandla | Phakathi | Phezulu |
Khumbula ukuba uhlale uthetha nomntu oqeqeshiweyo ukuze ufumane iingcebiso malunga nezicelo ezithile kunye neemfuno zokhuseleko.
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