Ganyayyaki Gyara babban mashin ne-sikali wanda ke amfani da motsin motsin ƙwayoyin cuta a cikin rami na ciki don matsi, tsage kuma tanƙwara es, kuma kusan murƙushe abubuwa daban-daban. Babban ƙarshen saman babban abin da aka tanada tare da murkushe mazugi yana goyan baya a cikin sinadarin a tsakiyar katako, kuma an sanya ƙarshen ƙarshen a cikin rami na eccentric na bas. Lokacin da shuffi na rufe, murƙushe mazugin yana sa motsi na motsin eccentric a kusa da layin cibiyar. Aikin murƙushewa yana ci gaba, don haka iyakar aiki mai aiki ya fi na na muƙamuƙin mu'ujihu. Da sassafe 1970, manyan gurasa masu yawa na iya sarrafawa 5,000 na kayan da ke cikin awa 5, kuma matsakaicin abincin diamita na iya kaiwa mm 2,000.
Gyanta Grayer ya fahimci daidaitawa da kuma ɗaukar inshora na budewar a cikin hanyoyi biyu: daya hanya ce ta inji. Akwai kwaro mai daidaitawa a ƙarshen ƙarshen babban shaft. Lokacin da giyar gyara an juya shi, za a iya saukar da mazugi ko tashe, don tsananin buɗe yana canzawa daidai. Babba ko ƙarami, lokacin da aka azabtar, gidan mai tsaro a kan tuki filayen an yanke shi don samun aminci; Na biyu shine Cruger na Gydraulic, wanda babban abin da ke kan pubger a cikin siliki mai hydraulic, canza matsin lamba a ƙarƙashin punter. Yawan mai hydraulic mai na iya canza manyan matsayi na murkushe mazugi, ta haka canza girman bude fitarwa. Lokacin da aka saukar da kai, matsi da matsakaicin matsi na babban shaft yana ƙaruwa, tilasta wa malihin watsawa, don murƙushe kayan tashar da ke shiga da murƙushe rami tare da kayan. Abubuwa masu karya (baƙin ƙarfe, da sauransu) don inshora.
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