Mtengo wa Bran Wofiyira wowirikiza ndiye gawo lotumiza pang'ono la mtengo wowirikiza kawiri ndikunyamula zida zokwana kawiri ngati mtundu wa mtundu wa Bridge ndi mtundu wa gantry. Imapangidwa ndi pulley yokhazikika, pulley yoyenda komanso yosakira. Imapangidwa ndi chitsulo chachikulu kapena kusungitsa chitsulo kuti zitsimikizire kuti katundu wambiri (gulu limodzi lingafike matani 500) ndi moyo wautumiki wautumiki. Chingwe chake chamakina oyendayenda (u-mtundu / v-mtundu) amatha kuchepetsa kwambiri chingwe. Ndi zitsulo zokulirapo kapena zoseweretsa-zosagwirizana, zimatha kukhala zokhazikika komanso zotsika-zotsika ndikukweza. Ndioyenera ziwonetsero zapamwamba kwambiri monga zitsulo monga matola, madoko, ndi mphamvu yamkuntho.
Kachika kakupuma kwa mazira, kumathandizira kukonza mwachangu, ndipo kumatha kukhala ndi dongosolo lanzeru komanso kutentha komanso kugwedezeka kwa nthawi yeniyeni kwa malo ogwiritsira ntchito kuwongolera. Mapangidwe otetezedwa monga mabatani otsutsa komanso malo osokoneza bongo atha kulepheretsa ma ribop aya kuchokera kulumpha kapena kusakhazikika, ndikuwongolera kudalirika kwa ntchito. Malinga ndi zomwe akugwira ntchito, mitundu yapadera monga kutentha kwambiri kukana, kukana kuchuluka kapena kuphulika kwa kuphulika kapena kuphulika kumatha kusinthidwa kuti azolowera malo osiyanasiyana opanga mafakitale.
Chren Pully Bullley block ili ndi maubwino apakati pa ntchito yayikulu, kupulumutsa ndalama ndi kukonza kovuta, komwe kumachepetsa kugwiritsa ntchito mphamvu ndi kumathandizira moyo waya. Makina ake okhazikika amagwirizana ndi mitundu yayikulu ya crane ndikuthandizira kusinthasintha. Ndi gawo lofunikira kuti musinthe magwiridwe antchito ndi chitetezo chokweza zida.
