mexanizmi traktor burilayotgan
paytida uning tezligini kam ay-
tiradi va kinem atik belgisi b o ‘yi-
c h a ik k in c h i
tu rd a g i b u rilish
m exanizm iga qaraydi.
Ikkinchi holat — traktorning
belg ilan g an rad ius
R = R min =
= B /2 b ila n o ‘ng to m o n g a
b u rilish i. B uning u c h u n o ‘ng
tom ondagi
friksion F2 ajratilga-
nidan so ‘ng (69-rasm ) t o ‘xtatib
turuvchi
T02 torm ozini q o ‘shish
k e ra k . Bu esa o ‘ng to m o n d a g i z a n jir n i t o ‘x ta ta d i va
tra k to rn in g tu rgan jo y id a o ‘ng to m o n d ag i zan jir atroflda
bu rilish ig a olib k elad i. T ra k to rn in g
b u rilis h sxem asid an
(7 0 -ra sm ) k o ‘rin ib tu rib d ik i, tra k to rn in g y u ris h tezlig i
Vt = VJ2 qiym atigacha kam ayadi (to ‘g‘ri
chiziqli harakat-
dagiga n isb atan ikki m a r ta kam ).
Friksion m uftali burilish m exanizm i konstruksiyasining
so d d alig i b ila n a jra lib tu ra d i. U n in g k a m c h ilig i shuki,
friksion m u ftalarn in g ish lash m u d d ati oz.
Y u q o rid a k e ltirilg a n k am ch ilig ig a q a ra m a s d a n , u la r
q u v v a tli va y u q o ri q u v v a tli z a n jirli
tr a k t o r l a r d a keng
q o ila n ilm o q d a . B u n d ay tra k to rla rd a m o y d a ishlaydigan
k o ‘p diskli frik sio nlar va to rm o zlar q o ila n ila d i.
6 .2 . B IR P O G ‘ONALI PLANETAR B U R IL IS H
M EXANIZM I
P la n e ta r b u rilish m ex a n izm i (7 1 -ra sm ) m ark aziy (1)
va oxirgi (
6
) u zatm alar orasiga joylashtirilgan
ikkita plajietar
tizim dan, ikkita t o ‘xtatuvchi
Tm va
T02 va ikkita bu-ruVchi
J 1, va
T 2 to rm o z la rd a n tashk il to p g an .
P la n e ta r tiz im la r a lo h id a (7 1 -ra sm ) va b itta korpus
ichida (70-rasm ,
b) jo y lash tirilish i m u m kin .
B itta korpus
ichida joylashtirilgan p la n e ta r burilish m exanizm lari quruq
to rm o z la r ish latilg an h o lla rd a k o 'p ro q q o ila n ila d i. T o r-
m o zla rn in g u z a tm a la ri sh u n d a y b a ja rilg a n k i,
b o sh q arish
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