Jack ndiwowunikira wamba komanso zida zazing'ono zonyamulira zokhala ndi ntchito zambiri.Sichida chachikulu chokha chonyamulira chomwe chili chofunika kwambiri pakukonza ndi kukonza galimoto, komanso chili ndi ntchito zosiyanasiyana pomanga, njanji, milatho, ndi kupulumutsa mwadzidzidzi.Ndi chitukuko cha chuma cha dziko langa ndi mafakitale a magalimoto, magalimoto nthawi zambiri alowa m'nyumba za anthu wamba, ndipo kutuluka kwa magalimoto okwera kumawonjezeka chaka ndi chaka.Kuwonjezeka kwa magalimoto kwapangitsa kuti kufunikira kwa ma jacks kuchuluke.
Ukadaulo wa Jack m'dziko lathu unayamba mochedwa.Cha m'ma 1970, pang'onopang'ono tidakumana ndiukadaulo wa jack wakunja, koma mulingo ndiukadaulo wa opanga m'nyumba panthawiyo zinali zosagwirizana ndipo zinalibe dongosolo logwirizana.Pambuyo pamizere ingapo ya mapangidwe ophatikizana a dziko, kukhazikitsidwa kwa miyezo yamakampani ndi miyezo yapadziko lonse lapansi, kuyimitsidwa, kusanja ndi kuphatikizika kwa kupanga jack zapakhomo zakhazikitsidwa.Tengani jack hydraulic jack monga chitsanzo.Malinga ndi miyezo ya dziko, zida zomwe zimagwiritsidwa ntchito nthawi zonse zidapangidwa mwaukadaulo, zotulutsa zikuchulukirachulukira, ndipo mtengo wazogulitsa watsika.
Ndikugwiritsa ntchito matekinoloje monga kukweza mwachangu komanso kubwerera pang'onopang'ono kwamafuta, zinthu za jack zadziko langa zakhala zikuyenda bwino kwambiri potengera mphamvu, moyo wautumiki, chitetezo, kuwongolera mtengo, ndi zina zambiri, ndipo mtundu wazinthuzo wayandikira pang'onopang'ono ndikuposa ambiri. zinthu zakunja zofanana.Zogulitsa, ndikutsegulanso misika yaku Europe ndi America.
Pakadali pano, mndandanda wa ma jack omwe amatumizidwa ndi dziko lathu ali athunthu m'magulu ndi mafotokozedwe, ndikuchita bwino kwazinthu komanso mpikisano wamphamvu padziko lonse lapansi.
"Mfundo ya jack ndi chipangizo chonyamulira chopepuka komanso chaching'ono chomwe chimakankhira zinthu zolemetsa mkati mwa bulaketi yapamtunda kapena pansi.Mitundu yosiyanasiyana ya jacks ili ndi mfundo zosiyana.Ma jack hydraulic jacks amagwiritsa ntchito lamulo la Pascal, ndipo ndiko kuti, kuthamanga kwamadzimadzi kumakhala kosasintha, kotero kuti pisitoni ikhale chete.The screw jack imagwiritsa ntchito chogwirira chobwezera kukankhira kusiyana kwa ratchet kuti izungulire, ndipo giya imazungulira kukweza ndi kutsitsa dzanja kuti likwaniritse ntchito yokweza ndi kukoka mphamvu.