Isilayishi se-excavator engundoqo yokukhulula ivalve 708-1W-04850

Njengevalve yokukhulula njengomlawuli woxinzelelo olude:

I-valve yokulawula i-multistage ephezulu kunye nephantsi isetyenziswe njengevalve yokulandelelana ukuvelisa uxinzelelo lwangasemva (umtya kwi-oyile yokubuyisela isiphaluka).

Ivalve yokulingwa yokunceda inamacandelo amabini: ivalve engundoqo kunye nevalve yokulinga. Iivalve zolingo ziyafana neevalve ezisebenza ngokuthe ngqo, kodwa ngokuqhelekileyo zizivalo zekhowuni (okanye ivelufa yebhola) izitulo ezimilise okwezihlalo. I-valve ephambili inokwahlulwa ibe yisakhiwo esinye esigxininisekileyo, i-concentric structure emibini kunye ne-concentric structure.

Emva kokuba i-PC200-6 iqaliswe ngokupheleleyo i-hydraulic excavator, isixhobo esisebenzayo sinokuqonda iintshukumo ezahlukeneyo, kodwa impompo ephambili ithumela ingxolo engaqhelekanga.

Ngokutsho kohlalutyo lokuqala, kukholelwa ukuba ipompo ihlanjululwa okanye i-oyile yesiphaluka ixutywe nomoya. Ngoko ke, qale ulungise isixhobo esisebenzayo kwindawo yokufumanisa inqanaba leoli, kwaye ukhangele ukuba inqanaba leoli letanki ye-hydraulic ingaphantsi kwinqanaba eliphantsi le-oyile ekujoliswe kuyo, okuyiyo indawo yokunqongophala kweoli. Emva kokubuza umqhubi, ikhonkco lokutywina lombhobho we-oyile ophezulu okhokelela kwigumbi elingenazintambo le-bucket rod cylinder yatshintshwa ngenxa yokuvuza kweoli ngexesha lomsebenzi, kodwa izinga leoli alizange lihlolwe ngexesha emva kokutshintshwa. Ngoko ke, okokuqala, itanki yeoli ye-hydraulic ifakwe i-refueled kumgangatho weoli, kwaye uvavanyo lubonisa ukuba ingxolo engaqhelekanga iyancitshiswa, kodwa isekhona; Emva koko, ngokusebenzisa i-valve yokukhupha ipompo enkulu kwimpompo ephambili emva kokuvavanywa kwakhona, kufunyenwe ukuba ingxolo engaqhelekanga isekho, ebonisa ukuba ingxolo ayinakubangelwa ngokupheleleyo yimpompo yokufunxa.

Okulandelayo, isihluzo sokufunxa i-oyile kunye nesihluzo sokubuyiswa kwe-oyile setanki ye-hydraulic siyajongwa, kwaye kufunyaniswe ukuba isihluzo sokufunxa i-oyile simnyama kwaye kukho udaka lwe-oyile, kwaye amasuntswana esinyithi amdaka ancamathele kwisihluzo sokubuyisela i-oyile. Ukuqwalasela ukuba kukho i-brown metal particles enamathele kwisihlunu se-oyile yokubuya, i-oyile yepompo engundoqo ikhutshwe kwaye ihlolwe, kwaye kufunyenwe ukuba kukho iincinci zetsimbi ezimdaka; Ngelo xesha, xa ipompo engundoqo ichithwa kwaye ihlolwe, kwafunyaniswa ukuba i-piston, i-valve plate kunye ne-swash plate ayizange yonakaliswe, kwaye isihlangu se-slipper sigugile. Emva kokutshintshwa kwayo, indibano yayiqhutywe ngokuhambelana neemfuno, inkqubo ye-hydraulic yahlanjululwa kwaye ioli yatshintshwa, kwaye xa umatshini wokuvavanya uqaliswa kwakhona, ingxolo engaqhelekanga yanyamalala kwaye iphoso yapheliswa.

Phantsi kweemeko eziqhelekileyo, izinto ezinokubangela ingxolo engaqhelekanga malunga nempompo ephambili zezi zilandelayo:

Ukungonelanga kweoli ye-hydraulic kubangela ukuba impompo ephambili ingabikho; Umoya uxutywe kumgca wokufunxa; Ibhloko yesihluzo sokufunxa ikhokelela kwimpompo yokufunxa engundoqo; Ukunxiba kwangaphakathi kwempompo ephambili kubangela ingxolo engaqhelekanga ekusebenzeni kompompo oyintloko.

Kule meko, ingxolo engaqhelekanga ibangelwa ukungonelanga kweoli ye-hydraulic kunye nokunxiba kwe-slipper ngaphakathi kwempompo enkulu. Isizathu kukuba inqanaba leoli alikhange lihlolwe ngexesha emva kokutshintshwa kwesitywina, okubangela ukuba ioli ye-hydraulic eyaneleyo, ukwenzela ukuba ipompo ephambili ivelise i-suction phenomenon; Xa i-oyile ixutywe nomoya iqukuqela kwimpompo engundoqo, isiliphu asikwazi ukudada okanye ukudada ngokunganelanga ngamanye amaxesha, okukhokelela ekwenziweni kwefilimu yeoli yokuthambisa elungileyo phakathi kwesiliphu kunye nepleyiti yokuswayisha, eyenza ukuba isiliphu sinxibe kwaye ekugqibeleni sibangele. ingxolo engaqhelekanga ekusebenzeni kwempompo engundoqo