Nthawi zambiri, zida zosiyanasiyana zimakhala ndi mitundu yosiyanasiyana yamagalimoto ndi malo osiyanasiyana ogwiritsira ntchito, kotero pali mitundu yambiri komanso kuthamanga kwa ma mota. Popanga simenti, zinthu za silicate, zida zomangira zatsopano, zida zomangira, feteleza, zitsulo zakuda ndi zopanda chitsulo, magalasi ndi zoumba, mphero za mpira nthawi zambiri zimagwiritsidwa ntchito. Ndiye ndi injini yanji yomwe iyenera kusankhidwa pazigayo za mpira? Pali makamaka mndandanda wotsatira.
Choyamba ndiinjini ya asynchronouss. Kupatula mphero zing'onozing'ono za mpira zomwe zimagwiritsa ntchito ma motors a gologolo poyendetsa, mphero zambiri zazing'ono ndi zazing'ono zimagwiritsa ntchito ma motors atatu okhotakhota asynchronous poyendetsa. Choyipa chachikulu cha ma asynchronous motors pakuyendetsa mphero ndikuti ndi osavuta komanso otsika mtengo, amakhala ndi torque yokwanira yoyambira, amatha kuyambitsa mphero yampira, ndipo amayendetsedwa ndikulumikiza kukana kwa ma rotor. Yachiwiri ndi ma synchronous motors. Pali mitundu iwiri yama motors oyendetsa mphero za mpira, zomwe ndi ma motors otsika oyambira ma torque ndi akulu. otsika-liwiro mkulu-torque synchronous motorsza mpira. Chomaliza ndiinduction synchronous motor. Ili ndi ubwino wotsatira: ili ndi ubwino wa torque yayikulu koma yoyambira pang'ono poyambira, ndipo ili ndi ubwino wamagetsi apamwamba kuposa injini ya synchronous pamene ikugwira ntchito, motero kuthetsa vuto la chipukuta misozi chamagetsi chamagetsi a simenti. Choyipa ndichakuti kupanga ndizovuta ndipo mtengo wake ndi wokwera mtengo, koma induction synchronous motor ili ndi tsogolo labwino ngati mota yotumizira yamagetsi akulu akulu.
Posankha mpira mphero galimoto, kuwonjezera kuganizira tatchulawa makhalidwe galimoto, ndalama koyamba ndi ntchito ndalama ayenera kuganiziridwa. Ganizirani za mtundu wa mota wa zida zina mu fakitale ya simenti, ndiye kuti, mphamvu yamagetsi amagetsi amtundu wonsewo. Pozindikira mphamvu yamagetsi, mawonekedwe a thiransifoma a gridi yamagetsi m'dera lomwe chomera cha simenti chilipo komanso kukula kwa gridi yamagetsi kuyenera kuganiziridwa. Galimotoyo iyenera kudziwika molingana ndi dongosolo lopatsirana pamakina a mphero, ndipo makina opangira makina othamangitsira ayenera kuganiziridwa powunika.