Muchimiro chekutanga chemutsara wekufamba kwekutakura, mutsara wematanda akaiswa pasi pemutsara we skid plates. Mazuva ano mutsara wekufamba mabhengi anoshandisa imwechete yekushanda musimboti, kunze kwekuti dzimwe nguva mabhora anoshandiswa pachinzvimbo che rollers. Iyo yakapfava inotenderera inobereka simbi yeshaft, inongori gwenzi rakaiswa pakati pevhiri neakisi. Iyi dhizaini yakazotsiviwa nemabhengi anokunguruka, ayo akashandisa akawanda macylindrical rollers kutsiva gwenzi rekutanga, uye chimwe nechimwe chinokunguruka chakaita sevhiri rakaparadzana.
Muenzaniso wepakutanga wekutakurwa kwebhora wakawanikwa pachikepe chekare cheRoma chakavakwa muna 40 BC muLake Naimi, Italy: bhora remapuranga raishandiswa kutsigira pamusoro petafura inotenderera. Zvinonzi Leonardo da Vinci akatsanangura bhora rinenge rakapoteredza 1500. Pakati pezvinhu zvakasiyana-siyana zvisingasviki zvemabhora ebhora, chinhu chinonyanya kukosha ndechokuti mabhora achadhumhana, zvichiita kuti kuwedzere kupesana. Asi izvi zvinogona kudzivirirwa nekuisa mabhora mumakeji madiki. Muzana remakore rechi17, Galileo akatanga kutsanangura bhora rakatakura "cage ball". Pakupera kwezana remakore rechi17, British C. wallow yakagadzira uye yakagadzira mabhero, ayo akaiswa pamotokari yetsamba kuti ishandiswe kuedza, uye British P Worth yakawana patent yekutakura bhora. Yekutanga inoshanda yekutenderedza ine keji yakagadzirwa nemugadziri wewachi John Harrison muna 1760 kugadzira H3 wachi. Pakupera kwezana ramakore rechi 18, HR hertz yekuGermany yakaburitsa bepa pamusoro pekusangana kwekunetseka kwemabhora mabearings. Pahwaro hwekubudirira kwaHertz, Germany's r. Stribeck neSweden's a Palmgren uye vamwe vakaita nhamba huru yebvunzo, izvo zvakabatsira mukuvandudzwa kweiyo dhizaini dhizaini uye kuneta hupenyu kuverenga kwekukunguruka mabheji. Zvadaro, NP Petrov wekuRussia akashandisa mutemo waNewton we viscosity kuverenga kukweshana. Yekutanga patent pachiteshi chebhora yakawanikwa naPhilip Vaughn wecamson muna 1794.
Muna 1883, Friedrich Fisher akaronga zano rekushandisa michina yekugadzira yakakodzera kukuya mabhora esimbi ane saizi yakafanana uye kutenderera kwakaringana, izvo zvakateya hwaro hweindasitiri yekubereka. O Reynolds akaita ongororo yemasvomhu yekuwanikwa kwaThor uye yakatorwa Reynolds equation, iyo yakaisa hwaro hweiyo hydrodynamic lubrication theory.
Nguva yekutumira: Sep-01-2022