Qhov ntsuas static load thiab dynamic load ntawm cov kabmob yog dab tsi?

 

Thaum peb nrhiav kev pab los ntawm covkev coj uaqauv, peb feem ntau pom ob txoj kev xaiv, Cr thiab Cor, Cr hais txog qhov dynamic load ntawm cov kabmob, Cor hais txog qhov static load ntawm cov kabmob. Yog li qhov static load rating thiab dynamic load rating ntawm cov kabmob yog dab tsi? Kev sib raug zoo thiab qhov txawv ntawm ob qho no yog dab tsi?

Peb qhov kev ntsuas yooj yim uas feem ntau siv rau hauv kev tsim cov kabmob dov yog: qhov ntsuas dynamic load Cr (radial) lossis Ca (axial) uas ua tau raws li qhov yuav tsum tau ua ntawm qee lub neej qaug zog; Qhov ntsuas static zog Cor (radial) lossis Coa (axial) uas ua tau raws li qee qhov kev xav tau static zog thiab qhov ceev kawg No, uas tswj kev hnav ntawm cov kabmob.

 

Dab tsi yog ib qhokev coj uaqhov ntsuas qhov hnyav zoo li qub?

 

Qhov ntsuas qhov ntsuas qhov zoo li qub ntawm cov kabmob dov (radial Cor, axial Coa) yog hais txog qhov xav txog radial load lossis central axial static load sib npaug rau qhov siab tshaj plaws ntawm cov kabmob thaum muaj qee qhov kev ntxhov siab los ntawm qee qhov kev ntxhov siab ntawm qhov chaw sib cuag ntawm cov khoom dov thiab qhov raceway.

 

Rau cov kabmob radial, qhov ntsuas static load yog hais txog radial load, rau cov kabmob radial thrust (angular contact ball bearing) yog hais txog radial Cheebtsam ntawm cov khoom thauj uas thauj cov raceway hauv ib nrab ntawm cov kabmob, thiab rau cov kabmob thrust, nws yog hais txog qhov nruab nrab axial load.

 

Uas yog hais tias, qhov ntsuas radial basic static load thiab axial basic static load ntawm cov kabmob xa mus rau qhov siab tshaj plaws uas cov kabmob tuaj yeem dais thaum nws nyob ruaj khov lossis tig.

 

Lub peev xwm nqa tau ntawm cov kabmob sib sib zog nqus ntawm qhov nres lossis qeeb qeeb (ceev n≤10r/min) yog ntsuas qhov thauj khoom zoo li qub.

 

Dab tsi yog ib qhokev coj uadynamic load rating?

 

Qhov ntsuas dynamic load ntawm cov kabmob yog hais txog: cov kabmob dov tuaj yeem dais tau qhov radial load tas li (qhov axial load tas li), nyob rau hauv qhov kev ua ntawm lub neej ntsuas yooj yim ntawm 100W rpm, qhov ntsuas dynamic load ntawm cov kabmob qhia txog lub peev xwm ntawm cov kabmob los tiv thaiv kev nkees ntawm dov. Qhov ntsuas dynamic load ntawm cov kabmob radial thiab cov kabmob thrust tseem hu ua radial basic dynamic load rating thiab axial basic dynamic load, uas tau qhia los ntawm Cr thiab Ca.

 

Lub peev xwm nqa tau ntawm cov kabmob pob thaum lub sijhawm tig (ceev n> 10r / mim) yog qhov ntsuas dynamic yooj yim.

 

Vim li cas qhov ntsuas dynamic load ntawm cov kabmob loj dua li qhov ntsuas static load?

 

Lub nra hnyav uas ntsuas tau hais txog lub nra hnyav ntawm lub bearing thaum lub neej ntsuas yog 1 lab rpm. Lub nra hnyav uas ntsuas tau hais txog kev sib cuag ntawm lub ntsiab lus dov thiab lub nplhaib sib tw uas muaj kev thauj khoom ntau tshaj plaws thaum lub bearing so, thiab qhov sib npaug ntawm qhov kev hloov pauv tas mus li ntawm lub ntsiab lus dov thiab lub nplhaib sib tw yog 1/10,000 ntawm txoj kab uas hla ntawm lub ntsiab lus dov.

 

Muaj qee qhov kev sib raug zoo ntawm lub neej ua haujlwm ntawm cov kabmob thiab qhov ntsuas ntawm cov kabmob, yog li peb xaiv cov kabmob raws li qhov ntsuas ntawm cov kabmob li cas? Cov ntsiab lus tseem ceeb yog raws li nram no:

 

Lus Cim: Qee zaum, qhov loj ntawm cov kabmob yuav tsum tau xaiv los ntawm qhov ntsuas qhov hnyav (txhais ua Co rau kev yooj yim piav qhia) es tsis yog lub neej ntawm cov kabmob.

 

1. Nyob rau hauv qhov kev ua ntawm kev cuam tshuam tas mus li lossis tsis tu ncua, qhov kev coj tus kheej yog nyob ruaj khov.

 

2. Nyob rau hauv lub nra hnyav, tus kabmob tsuas yog ua rau qeeb qeeb reciprocating oscillation lossis adjustable txav.

 

3. Nyob rau hauv lub nra hnyav, qhov ceev ntawm cov kabmob yog qis heev (tsawg dua 10 revolutions ib feeb) thiab tsuas yog xav tau lub neej luv luv xwb. Hauv qhov no, rau qhov sib npaug ntawm cov khoom thauj P, qhov xav tau qhov ntsuas dynamic load C yog qis heev raws li cov mis ntawm lub neej, yog li ntawd cov kabmob xaiv yuav raug thauj khoom ntau dhau hauv kev xyaum.

 

4. Ntxiv rau qhov kev ua haujlwm ib txwm muaj, nws kuj yuav tsum dais lub nra hnyav heev, thiab tus kabmob tig.

 

Hauv txhua qhov xwm txheej no, lub nra uas cov kabmob tuaj yeem tiv taus tsis yog nyob ntawm qhov qaug zog ntawm cov khoom siv, tab sis nyob ntawm qib ntawm kev hloov pauv mus tas li ntawm txoj kev sib tw uas tshwm sim los ntawm lub nra.