Camshaft Bush Na HOWO, HOWO-T7H, HOWO-A7, SINOTRUK WD615 Jerin Sashe na No.: VG2600010990/VG1560010029

Ilimin da ya dace

Halayen motocin camshaft da yadda ake kula da su

Ƙamar ɗaukar hoto wani abu ne a cikin injin piston.Ayyukansa shine sarrafa ayyukan buɗewa da rufewa na bawul.Duk da cewa saurin jujjuyawar na'urar a cikin injin bugun bugun jini guda hudu rabin na crankshaft ne (a cikin injin bugu biyu, saurin jujjuyawar na'urar yana daidai da na crankshaft), yawanci saurin jujjuyawar sa har yanzu yana da yawa sosai. mai girma, kuma yana buƙatar jure wa babban adadin kuzari.Sabili da haka, a cikin ƙira, abubuwan da ake buƙata don ƙarfi da tallafi na camshaft suna da girma sosai.Kayansa gabaɗaya simintin ƙarfe ne na musamman, kuma ana amfani da jabu lokaci-lokaci.Domin dokar motsin bawul tana da alaƙa da ƙarfi da halaye na injin, ƙirar camshaft tana taka muhimmiyar rawa a tsarin ƙirar injin.

1,Tsarin cam bearings

1. Haɗe-haɗe tsarin na lokacin farin ciki na waje zobe allura abin nadi hali da kusoshi

2. Girman girma samuwa a cikin awo da kuma Turanci jerin

3. An ba da kullin ɗaukar hoto tare da hanyar mai mai mai mai

4. Don sauƙaƙe shigarwa, an tsara babban ƙarshen ƙaddamarwa tare da "slotted" da "ramin hexagon" hanyoyin haɗin kai.

5. Wurin waje na zobe na waje yana da siffofi na cylindrical da siffofi, wanda za'a iya zaba bisa ga aikace-aikace masu amfani.

6. Cikakken nau'in abin nadi ya dace da aikace-aikace tare da manyan kaya da ƙananan saurin juyawa

7. Nau'in eccentric na iya sauƙi da daidai daidaita matsayi na axis na kusoshi lokacin shigar da ɗaukar hoto.

2,Yadda ake kula da cam bearings

(1) Duba curvature na camshaft.Tare da mujallu a ƙarshen duka a matsayin fulcrum, radial runout bai kamata ya zama mafi girma fiye da 0.03 mm ba, kuma idan ya wuce 0.10 mm, za'a iya gyara shi ta amfani da hanyar gyaran gyare-gyaren sanyi.

(2) Lokacin da ɗaga cam ɗin bai ƙasa da 5% na ƙayyadadden ƙimar ba, an ba da izinin kada a niƙa cam, amma da'irar cam na cam da radial madauwari runout haƙuri na cam tushe da'irar zuwa camshaft axis ya kamata. a duba;Ma'auni na overhaul shine

0.03mm, an yarda overhaul kada ya fi O.05mm.

(3) Ya kamata a goge saman cam ɗin idan ta kasance maras kyau, lalacewa, ko rami.Lokacin da sawar tip ɗin cam ɗin ya wuce 1.00 mm, yakamata a gyara tip ɗin cam ɗin bayan an gama walda don dawo da girmansa da sigarsa ta asali.

ko maye gurbinsa.

(4) Idan gear saman injin famfo mai a kan camshaft yana da ƙarfi ko sawa fiye da 0.50 mm, ya kamata a gyara shi.Kowane hakora na kayan aiki sun lalace, kuma an yarda

Ci gaba da amfani bayan an niƙa sasanninta masu kaifi.Matsakaicin filaye na eccentric dabaran na bututun canja wurin mai dole ne ya wuce O.80 μ m.Lokacin da sawar dabaran eccentric ya wuce 2.00 mm, ya kamata a gyara camshaft ko a maye gurbinsa ta hanyar walda.

(5) Haƙuri na cylindricity na kowane jarida na camshaft: daidaitaccen juzu'i shine 5 μm.Izinin overhaul bai fi 15 μm ba.Iyakar amfani shine 25 μm.

(6) Haƙuri na radial madauwari mai ƙarewa na jaridar shaft da kuma ƙarshen fuska madauwari ta ƙarewar kuskuren axial thrust ƙarshen fuska na camshaft lokaci kayan aiki ba zai zama mafi girma 35 μ m