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Hình 2.2 :Mặt cắt ngang hộp số U340E
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Bảng 2.2 Bảng thông số kỹ thuật của hộp số U340E
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h\KnM sSh
2.5.2. Các cụm chi tiết chính trong hộp số tự động U340E
2.5.2.1 Biến mô
YdK_cWyeaIXWyejI_NJlKc“yJYN-WbYZ[\—YaIX
daK˜d•WKVN[†f^fgIYZ[\]JY—'•˜YcKN|
YdK_czdd-dIedKjUZYNKXI[ebWWƒdK_cNwe|
NiNNdYZ‚J•YdK_JŽKJMNJŽJg'•fbd-fgININ|Z%YN-’Ie
Wdd-’IeWfgIdkJŒaeydd-YfŸln’Ied
IedK
q
Hình 2.3: Bộ biến mô
a. cấu tạo biến mô
•d-.oWUKWƒdK_cnoZWUKa^NjImIJYN-JLaIXc“
\NJYN…eJYN-
•IedK.oWUKa^N[-N|ZN…eYZ[\‚c“ydd-
•Ziw.%MNoWba^NYZ[\c’IejUZNKXIN•KVW^
JŽKNKXIJxf¥fgIydIedK’IeWXdd-WlbaeV[\jI_NJlK
c“
•)MZj•edK_c.oWUKa^NN…eYZ[\]JYnKj_dd-W
dIedK
•d-(hình 1.5)JMNd\a`•abWƒdYdK_cW\KWUKa^NjImI
’IeJ”ef¥JYKXIN‘NbJMNnoZdabdd-YWŸf¥
UJMNnoZa-ZabN…eNNNJLJxf¥fŸfgIJMN
Hình 2.42Bánh bơm
IedK(hình 1.6)JMNd\a`•abWƒdK_cWJMN\KWUKa^N[-
N|ZN…eYZ[\|Ilbza|KXINJMNnoZn dIedKK\
s
axMZdd-UNbN…eNNNMNNKXIWUKUNbN…e
NN…edd-IedKJMNnoZaa^N[-N|ZN…eYZ[\[ebNbNNN
dab••J\KfKVWUKNNNN…edd-WUKYj“pa|ƒpK‡e
Hình 2.5:Bánh tua bin
Beb(hình 1.7)JMNnoZWUKWƒYZ[\’IejUZYNKXIfŸfgIapWXy
dIedKWbdd-“bUNi[]’IeN…edd-bJ•[ebJŽK
NKXIN…efŸfgI[ebNb•NJYnZ`e[eIN…eNNNadd-WdŽ
[In]NJŒNbdd-nc“
Hình 2.6: Stato
hUZYNKXI—‘s˜Y„oWUKWƒYZ[\„jKeoWUK[ebhUZ
YNKXINbZ-ZBeb’Ie“bNKXI’IeN…ea^NjImIJYN-_IBebJk
doJgI’Ie“bNKXIMNnlK‘jUZYNKXI[žjb[ebJLjcNb
•’IeMNnlK
u
Hình 2.7:Khớp một chiều
blJYN…edK_c.hK\NJYN…edd-‘n]NnKŠnNbfgI
doJgINiyŠdd-aeZ`ebKhK\NJYdd-n‡e‘fgI
[ždk-ZWaejƒKdd-gIWeWbNN…edIedKnNbdIe
dKdoJgI’IeNšNKXIWUKdd-gINiWbabfvN“bNNNN…e
dIedKhK•NIKJMNWbdabdIedK‘„NbabN…eN
[žJŽKUfgIMNnlKWXZ`edd-WNIj¬nlKdoJgIyJgI#KVNaIX
c“JMN]NKVx[]IgbfgI’Iedd-WdIedK
Hình 2.8:Sự truyền mô men qua bộ biến mô
#KVNjI_NJlKc“fbdYdK_c]NKVd•NNf¥fgIjK•W¥
NŸnM[eIjKJ€JK’IedIedKapWXdd-’IeNN…eBeb
•KNNjNdd-JMN’Iefbc“yJYN-c“nlKJMN
dŽ[IfgI’IeWXydIedK•L•Ka•dd-jI_NJlKc“
deJgIJLf¥JYdIedK
Hình 2.9:Sự khuếch đại mô men
b. Đặc tính của biến mô
%„N`N…edK_c(hình 10)zeK\K’IeVm[\aIXc“WKVI
[I|Z^IYNWbm[\aIX\NJY
%YjI_NJlKc“fbdYdK_c[ž“b nVWUKfŸ–bc“
[žapN]NJlKjKdIedKfyblJYN…edYdK_cJMNNKe
eKfiKblJYiKdK_cabJ•N•[]jI_NJlKc“iKjUZ\K
abJ•N IgI{fK§aeWKVNaIXc“W[]jI_NJlKc“jc–i
ae%KLnKMZnJxZŠNKeK‡eeKZlWKJ•KVI[I|aIXJYN…edY
dK_cNb|nMaIXNbdd-JMNaIXUKdIedKWUK
KVI’Iiae[ebnMpJŠnNc[I|N…ediŠJYN- nVWUK\NJY
JYN-—WŸtZ•˜Wc“JYN-bc“JMNaIXWUK [\g.
abjUZImn]NKVI[I|aIXJYabfiKjUZ\K[žI_KVI
[I|aIXJYN…edYdK_cjcJl`W nVWUK [\\NJYJMN®W
xJljbiuS®B]ŽebnMnfbKV[KaeabfgIWfbe
[hKfgIIgb•JMNdYnfgIn
Hình 2.10:Đặc tính của bộ biến mô
%KLfyaJ„N`N ‘alpJ•dIedKjcNILJY
B]NnVNWX\NJY’IeK‡edd-WdIedKnnU|' [\aIX
c“N…edYdK_cnnU|lKJKLfy—xabZlWKyqJ_
S˜KVI[I|aIXJYd•
#šdK_cjKdIedKdoJgI’IeW [\aIX\NJYn[]
NVnVN\NJY’IeK‡edIedKWdd-doJgIKi–I\/xK
JKLKVI[I|aIXJYKVI[I|aIXJYJlnU|eaUN
JKLnMZ'abWšm[\aIXc“Kifg—W`f^yJ_˜W
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ak[\bJ•jbis‘m[\aIXc“apnd•.
%KLnMZaJ„N`doJgIjK\NJY’IedIedKJlys•®
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-N|InKMZjbdK_caIXNc[I|JYN-UKYZ[\]JYYNN
a]NK_ZWN-vNbdYdK_c[†f^fŸImn]NJLKK_ZaIXNc[I|
N•[]ŽebNc[I|#‘W‚nKMZJMNnoZabdYdK_cJL\Ka]NK_Z
JYN-WUKYZ[\JLKiŽ|Nc[I|hK–“JlJMNY\NJY|Jk
‘N-N|InKMZjbdK_cJMN[†f^JLŠNebKVI’Ii[†f^Nc[I|
WKnKVI)KMZjbdK_cJMNnoZabbe-N…edIedKZ`eaUN
dIedK)Ÿ–bKiN|[ž|Z^n]N–bojKjUZnKMZJLjc
Nb[KaeWeJ‚Z YnblKW‚nKVIe[—NšflW‚nKVI[†f^ abNN
ZeWJ”enKMZ˜JMNonWƒdK_cb„NZ`cjbN…edYdK_cJL
[]aMpxKJKLjUZnKMZ
c. Hoạt động của cơ cấu khóa biến mô
ijUZ—‘˜jK–“Nlp\NJY|Z‘fgIdk-—Z[I|N…edYdK_
c˜[žNiWbZ`eaUNN…enKMZjbdK_cbJ•Z[I|a„aUNW
„[eIN…enKMZjbdK_capNŠd•WfbJ•nKMZjbdK_cJMN
ijUZ
Hình 2.11:Khi ly hợp nhả khớp
°jUZ( hình 1.13)jK–“NlŽJkp\NJYaId‘b„NNeb—x
ajt˜‘fgIdk-[žNiWbZ`e[eIN…enKMZjbdK_cbJ•Wƒ
dYdK_cWnKMZjbdK_c[ža]NK_Z\KWUKeIbJ•nKMZjbdK_W
WƒdYdK_c[ž’IeNšeI
Hình 2.12:Khi ly hợp ăn khớp
2.5.2.2 Bộ truyền bánh răng hành tinh
Yab‡dYZ‚’IeavabYZ[\]JYndYaIXK
•JKXIjKLWKVNNIL[\JibNKXIKi\N\Ka]NK_ZW\NYaIX
daK(hình 1.14) zN•Y[\dYZ‚.
•a„axK
•NdaK
•gf¥.)dYZ‚nKj_NNa^NdaK
•adeb
Hình 2.13:Bộ truyền bánh răng hành tinh
1- Bánh răng mặt trời 2- Bánh răng hành tinh 3- Cần dẫn 4-Bánh răng bao
YdYaIXdaKdebKxNœN•:dYZ‚JLlbaeY
e[\—eN|Z[\˜‘N N•dedYZ‚eKe—:˜IoNlbae[\
aIXZiKN\Jk—Ze˜YabdeZg†b„Nb„Nb„N:
#‚‘ZiKfšYdYZeWUKWƒYZ[\[eIJ•ZiKaIXc“W\N
JY’IeNbYabeKZg†b„NNieKZg†NŸnlK
2.5.2.3 Phanh
a. Phanh dải
iKZe(hình 1.15) JMN’I|WŸnJxj`bKN…ea\Ze
YJgIN…efiKZeJMN€N„WbWƒYZ[\d•YN\NŸJgIjKeK_Z
–•NWUKZ`cZe’IeNgJŒZ`cNILJYd•Z[I|Imn]N2`c
ZeN•LNILJYaNgJŒZ`cxWKVN-NNnŸ–bNNgJŒZ`
cN•eKNKXIfKjNeIJLN•LJKXIN j“pK‡efiKZeWa\
Ze
blJYjKZ[I|Imn]NNJYnZ`c‘Z`cfKNIL[e
Z`eaKab–KneW-NNnŸ–bgJŒZ`cNIL[edaKNšWUK
Z`cWJŒYJgIN…efiKZebJgIjKeN…efiKZedkN\JkWbWƒYZ
[\Jxj`N…efiKZeKi–I\WfiKZe–K_Wba\nNb•
jcNILJYJMN'lKxKJKL[KaeYn]Ne[nUK‡efiKZe
Wa\ZenNba\Zeb„NYZg†N…edYaIXda
KjcLNILJYJMNhKfgIN•Z[I|JMNf¥aejƒK–Kne‘Z`
cWNgJŒZ`cdkJŒMNnlKfbn]NN…enŸ–bbKWa\JMNfiK
Zeiae)Ÿ–babN•eKNwN.%L|ZIZin]Nya\ZeWJL
:
KiWeJ‚Z[KaejKfiKZe–K_a\Ze
Hình 2.14:Phanh dải
b. Phanh đĩa
2eJ”ezNNJ”ee[WJ”e-ZjKblJY•[ž\KdYZ‚•
N\JkdYZ‚bJ•NJ”ee[JMNKd•“beWbWŸnbKN…e
jUZYNKXI[\WNNJ”e-ZJMNN\JkWbWƒYZ[\#ŸnabN…e
jUZYNKXI[\—NNda„axKaUNW[eI˜JMNK_j_[ebNbjK
’IeMNNKXIjKJzz‘•[ždkjbjK’Ie“bNKXIjKJz
z‘•N•L–be]fb'abYYZ[\N•LN•YWKdYZeJ”e
Hình 2.15: Phanh kiểu nhiều đĩa ma sát ướt
Hoạt động của phanh đĩa ma sát ướt :
hKZ[I|Imn]NNJYn–KneZ`c[žfkNNILW-ZNNJ”e
-ZWJ”ee[K_Z–•NWUKeIbJ•lbYn]Ne[nUK‡e•KJ”e
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