Chrrong 3
.
.'
TRANG
B!
DII;N - DII;N
TU
THANG
MAy
vA
MAy
NANG
§3.1.
KHAI
NI~M
CHUNG
Thang
may
(may
nAng)
18.
thi~t
hi
vl\ln
tAi
dung
d~
cha
hang
va
ngubi

caa
na.ng sullt,
vl\ln
hanh
tin
cl\ly,
an
toano
Tilt
ca
cae
thi~t
hi
di{}n
dUQc
M.p
~t
trong
bu6ng
thang
va
bu6ng
may.
Bu6ng
may
thubng
b6
trl
"
bing

bing
1 cho
den day gi«ng.
N«u
h6
¢ng
cO
dQ
sAu
hdn
2m
thl
phAi
lam
thAm
cua
ra
vao.
D~
nAng
-
h~
hu6ng
~hang,
ngubi
ta
dung
d/)ng
Cd
6. DOng

pUli qutln
cap
vA
dOng
co
cO
lAp
hQp
giAm t6c 5
vl'li
ti
86
tnly~n
i
==
18 + 120.
Khung
cUa
bu6ng
thang
3
dl1Qc
tree
l~n
puB
qutln
c~p
bAng
cap
kim

lo~i
puli
truc;Jt
cd
bQc
cao
Bll
b~n
ngeai).
Bu6ng
thang
vA
d6i trQng
di
chuy~n
dQc
28
-144
11
Hlnh
3-1.
Ka
~
vB
b6
tri
thj~t
bi
cUa
thang

thang
t~i
eM
khi
dut
cap, mfit
di~n
va
khi
t6c
d¢
di
chuygn
Vligt
qua
(20+40)%
t6e
dl)
dtnh
mac.
Phanh
haa
hil!m
tbttbng
dugc
eM'
t.f.ta
thea
3 kil!u :
phanh

"tAi
helD,
no
dam
baa
eha
bu6ng
thang
dung
@m
han.
K~t
eliu
clla
phanh
baa
hiem
kieu
kim
dugc
hil!u
di~n
tren
Mnh
3-2.
Phanh
baa
higm
thuang
dUQe

co
n@m
5 gAn voi M
truy~n
dOng
banh
vlt
-
tr1,lc
vlt
4.
H~
truyt!n
d¢ng
tr\lc
vit co
hai
la~i
ren
:
ren
phai
va
ren
trai.
Cung
voi
k~t
eliu ella
phanh

ly
tam
quay.
Khi
t6e
de;;
di
ehuyen
clla
bu6ng
thang
tang,
co eliu
dai
truy~n
3
se
lam
cha
tang
4
quay
va
klm
5
se
ep
ch~t
bu6ng
thang

vit;
5 -
Ntm.
§3.2. PHAN
LOJ),I
vA
eAe
THONG SO
Ki
THU;'T
eo
BAN
eUA
THANG
MAy
Tuy
thu¢e
V3a
ehuc
n8.11&',
thang
may
co
thg
phAn
laf,li
thea
cae
nh6m
sau

trang
nha
An
va
thu
vi~n.
29
'.
PhAn
lOI;li
thea
tl'Qng
tai
:
1 -
Thang
may
la~
nM
Q < 160kG.
2 -
Thang
may
trung
blnh
Q =
500
+-
2000
kG.

TINH
CHQN
CCNG
SUAT
DONG
CO
TRUYEN DONG THANG
MAy
D~
dnh
chc;m
d11QC
cOng
su!t
dQng
co
truy~n
d¢ng
tbang
may
clin
cO
cac
di~u
ki(!n
vA
tham
s6
sau
:

tI"Qng
d11QC
dnh
thea
cOng
thuc
sau
:
30
Trang
d6
Gbl
- kh6i hlQng
bu6ng
thang
[kg]
G -
kh6i hlQng bAng, [kg]
v - t6c
dQ
nAng, [mls)
g -
gia
t6c tl'Qng tr11bng, [m/s2]
rz
-
hiQ:u
suAt
cUa
CO"

hl;l
tAi
(3-3)
Trang
d6
: Pen - cOng
su!t
dnh
cua
d¢ng
00
khi nAng
co
dung
d6i trQng
P
eh
- cOng sul'lt
dnh
cua
dQng 00 khi
hl;l
co
dung
d6i trQng
G
dt
- kh6i
111Qng
cua

hl
+
aG,
[kg].
(3-4)
Trang
do : a - M
s6
cAn b!\ng (a = 0,3 + 0,6).
;
'.
Phlin
16:n
cac
thang
mAy
eM
khach chI
v$,n
hAnh
dl1y
titi
trvng
nhung
gtb can
di~m,
thOi
gian
-dm
l~i

vii
khi
hl;l
thu:bng
Iii.
khOng
tAi, nlm
chc;m
a = 0,5.
D\ia
t~n
hai
bi~u
thuc
(3-2)
va.
(3-3)
c6
the
xAy
dl,1'ng
dllt;JC
biell
dfi ph\!
tAi
vA
chc;m
ad
bl) cOng
sullt

cua
va
86
IAn
dling
cua
bu6ng
thang
khi
chuyen
dl;lng.
ThOng
s6
tllCfng d6i M
tfnh
toan
cae
thai
gian
trlln
dllQ'C
dua
ra
trong
bAng
3-1.
Thbi
gian
ra,
vAo

(m/s)
0,5
0,75
1,0
1,5
2,5
3,5
18
16
14
12
10
8
6
4
2
V
V
Bimg
3-1
Thbi
gian
rna
may
T6ng
thbi
gian
cOn
l~i
(8)

BOOmm
dulli
BOOrnm
dulli
1000mrn
(md bAng tay)
(meJ
t~
dQng)
(rna
tV'
dOng)
,
1,6
1,6
12,0
7,0
-
1,6
1,6
12,0
7,0
-
1,8
1,8
13,0
7,0 6,3
1,8 1,8
-
7,2 6,3


E
5nau
';
5
10
14
18
22
26
30
34
38
42
46
50
m,
Hlnh
3-3.
Dl1dng
cong
de
x.IIc
dinh
~
illn dung (thoo
xAc
suJll)
Clla
bu6ng thang.

dAy
:
1.
nnh
IIjC
kea
d~t
len
puli
cap
kea
bu6ng
thang
a tAng dulii
dmg
va
cac
IAn
dung
ti@'p
thea
:
Trang
do :
kl
- s6 llin
dung
cua
bu6ng
thang.

nl!u F > 0
va
:
F.R .
M
~
-,-12
,
[Nm],
n@'uF<O.
Trang
dci
R -
ban
kfnh
cua
puli, [m].
i -
ty
96
truy~n
cua
cd
~u.
'1
-
hi~u
sucH
cua
co cAu.

rna
may
va
hlim
may
va
t6ng
thai
gian
ron
l~i
(thai
gian
dong
rna
cua
bu6ng
thang,
thbi
gian
ra
vao
buang
thang
cua
hanh
khach)
thea
bang
3-1.

cua
de)ng cd truyl'!n. de)ng co
tlnh
den
cae
qua
trinh
qua
de)
va
ti@'n
hanh
ki@'m
nghi~m
cOng
sullt
dQng cd dli
ch<;>n
thea
di~u ki~n
phat
nong,
qua
till.
§3.4. ANH HuUNG
ellA
Toe
DQ, GIA
Toe
VA DQ

thang
chuyEfn
d¢ng
~m.
Bu6ng
thang
chuyEfn dOng
Elm
hay
khOng, ph\! thu¢C
vao
gia
t6c
khi
md
may
va
khi
hlim
may.
Cac
tham
56
chlnh
d~c
t:rung
cha
ch~
dO
lam

cua
thang
may,
cd
y
nghta
quan
tI'Qng, nh:H
la
d6i
vai
cac
nha
cao
bing.
D6i
v6"i
cac
nha
ch9c
trbi,
t6i
uu
nMit
la
dung
thang
may
caa
t6c

tling
gia
thlinh
eua
thang
may.
Neu
tang
32
'.
t6c d¢
cua
thang
may
v = 0,75m/s
Hln
v = 3,5m/s, gia
thanh
tllng
Illn 4 + 5 ll'in. Bai
v1).y,
tuy
thea
d¢
caa
cua
nha
rna
chQn
thang

gia
t6c IlIn sll
gAy
ra
cAm
giac
khd
chju
cha
hAnh
khach
(nhu
chdng
m~t,
SQ
hAi,
nghfilt
tho
v.v ). Boi
v$.y,
gia
t6c
t6i
uu
la
a
:!iO
2m/s2.
Gia
t6c t6i

d~
(m/s
2
)
Gia Me
dnh
toan
kung
binh
(m/s
2
)
I
'-'
,0
!-_I-
'I
I ,
I
,
Xaay
chi~u
0,5
0,75
1
1
0,5 0,5
s
H~
tTUy~n

, ,
L.,J
P
Hloh
3-4.
Cae dlldng cong
bit!u
dil'n
sl,l
ph1,l
tln.tOe
ella
quAng
duong
S,
Ide
d¢
v,
gia
16e
a
va
dO
del
P
thea
thOi
gian.
33
M~t

Noi
mtit
eAch kM.c, do
Iii
da
d
2
v
d¢
~t
(~l.lo
ham
b~c
nhc'(t
cua
gia
tOe
f =
dt
hoi;1c
~
h8rn.
~
hai
ella.
t.6c
dti f =
dt
2
).

cao bi€u di€n
tr€ln
hlnh
3-4.
Bieu
d6
nay
co
th~
chia
ra
lam
5 giai
dOl.ln
thea
dnh
chllt
thay
d6i toc dti
cua
buang
thang
:
ma
may,
che
dti
On
dinh,
M.m

d()ng
xoay
chieu
vlii d(lng co kht"lng
d6ng
b(l
hai
cap
t6c
dQ,
bi~u
d6 chi
dl.lt
gan
giOng bi{!u d6 t6i
uu.
Doi voi
thang
may
chl;iy
ch~m,
bi~u
d6
chi
c6
ba
giai do!pl :
mo
may,
chI'!

khi
iln
nut
dung.
Neu
buang
thang
dung
khong
chinh
xac
se
gay
ra
cac
hi~n
tUQng
sau
:
- D6i
v6i
thang
may
cha
kMch,
lam
cho
hanh
khAch
ra,

mtit
s6
trubng
hQP
c6
th~
kht"lng
tht,!c
hi~n
dUQc
vi~
x~
vA
Mc
da
hang.
D~
kh~c
phl,lc
h(,-u
qua
do, co
th€
c'(n
nhAp
nut
ba:m
d~
df).t
dUQc

clk
thi~t
hi
Cd
khi
- TAng
thbi
gian
tu
luc
ham
d~n
dung.
D~
dung
chinh
xlie
bu6ng
thang,
din
dnh
den
m(jt
ntra
hi/[!u
56
cua
hai
quang
duang

bao
gam
:
momen
cua
co cllu
phanh,
mt"lmen
quan
dnh
cua
buang
thang,
t6c
d¢
khi
b~t
dAu
ham
va
mOt s6
yeu
to
phl,l khac.
Qua
trlnh
ham
bu6ng
thang
xity

'.
thang.
Trang
quAng
thbi
,gian
6.t
(thbi
man
tac
dQng
cua
thi~t
bi
di~u
khi~n),
bu6ng
thang
di
dUQc
quAng
dubng
IA
S'
= voAt ,
[m]
(3-7)
Trang
d6
: v 0 -

S".
mv'
S"
=
0,
[m]
2(Fph
±
FJ
(3-8)
Trang
do
: m -
kh6i
IUQng
cAc
phl1n
chuygn
dQng
cua
bu6ng
thang,
[kg]
F
ph
-
h,1c
phanh,
[Nl
Fe

bu6ng
thang
di
xu6ng
(-).
S"
cung
cd
the
vi~t
duO'i
df).ng
sau
:
S"
=
(3-9)
Trang
do
: J -
mOmen
quan
dnh
M
quy
d6i
v~
chuy~n
d¢ng
Clla

-
ti
os6
truy~n.
Quling
dubng
bu6ng
thang
di
dUQc
tit
khi
cOng tAc
chuygn
d6i
tl1ng
cho
l~nh
dung
dl!n
khi
bu6ng
thang
dung
tf).,i
sAn
tllng
IA
:
S =

hi~u
hal.
quAng dU'bng truo:t
khi
phanh
d4y
tAi
vA
khOng
taL
Sai
s6
16n
nMt
(d(i di:lng khOng
.chinh
xac
IOn
nhllt)
IA
s - S'
, I
"S
= 2
(3-11)
Trong
d6
:
Sl
- q uAng

truy~n
d(ing
voi
d¢
khOng
chinh
xac
khi
dung
As.
35
Bang 3 - 3
Ph/ilm
T6c
dO
Gia
D¢ khOng
H~
truyen
dOng
di~n
vi
di~u
di .
t6e
chinh
xBe
khi
chlnh
chuy~n

±
10
+
15
DOng
00
KDB
re,
to 16ng
s6c
hai
cllp tile dl)
1 , 4
1
1,5
± 25
+
35
H~
may
phat
-
dl)ng
co
(F
-
D)
1 , 30
2,0
2,0

Dung chinh xflc
w6ng
thang.
36
'.
§3.6. cAe
H~
TRUYEN
DONG
DI~N
DUNG TRONG
THANG
MAy
VA
MAy
NANG
Khi
thi~t
k~
M
trang
hi
di(m
-
di~n
tli: cho
thang
may,
vi~c
11,18.

Ph~m
vi
di~u
chinh
t6c
de
H~
truy~n
dOng
dil)!n
xoay
chi~u
dung
d¢ng
co khOng dOng bl)
rotor
lOng
soc
va
rotor
day que'in
du'c;1c
dung
kha.
pM
bi~n
trong
trang
hi
di~n

dOng d/)ng co khOng
d6ng
bl)
rotor
dAy
quan
thuang
dung
cho
cae
may
nAng
cO
trQng tM
lCm
(ct.')ng
sulIt
d/)ng
cO
truy~n
dOng
tdi
200kW)
nham
hl;ln
ch€
dbng
khai
d¢ng
d~

khach
t6c
dl)
trung
blnh.
H~
truy~n
dl)ng mQt
chi~u
may
phat
-
d(>ng
~o
cO
khu~h
d~i
trung
gian
thubng
dung
cho
cae
thang
may
cao
too.
H~
nlly
dam

M xoay.
chi~u,
phuc
tli\P
trong
v~n
hllnh
va.
stia
chua.
Nhung
nAm ga:n day,
do
s~
phat
tri~n
cua
kg
thu~t
di~n
tu
ct"mg
sutlt
I6"n,
cac
M
truy~n
d(>ng
ml)t
chi~u

thang
mily t6e
dQ
trung
binh
He
truy~n
d¢ng
di~n
dung
cho
thang
may
too
d¢
trong
blnh
thu:bng
la
M
truy~n
dC)ng
xoay
chi~u
vl:li
dl)ng co
kh6ng
ddng
b(>
2

san
tling.
Hi)
nay
thubng
dung
ebo
cac
thang
may
chlJ kM.ch
trong
cAc
nha
cao
bing
(7 + 10)
U.ng) voi
t6c
dl)
di
chuy~n
cua
bOOng
thang
du6i
1
m/s.
ScJ
d6

cO
dUQc
niH vi'io
ngu6n
clip
qua
cae
tiirp
di~m
cua
cOng tAc
to
nAng N
ho~c
c6ngt~ctd
h~
H
va
Cac
tiep
di~m
cua
c6ngtactcJ
t6c
d-Q
cao
C
ho~c
c6ngtactd
tdc

cu6i
lCT
;
SCT.
Then
cai
ngang
cua
li~n
d(>ng
vOi
cAc
hAm
cu6i
lPK
+
5PK.
Vi~c
dong
- mlJ
ctia
tling
s~
tac
d¢ng
Mn
kh6a
vll
then
cM

++
fD
HilT

(/IT
J{IlT
HilT
f(IlT
tiC
( C
U[
_
DI
;::
D2
~
DJ
~D+
_
DS
~
Dr;
1
NOI
fti[
RTf
/IN
/IT)
/IT,?
!ITt

do
nguyen
Ii
ditn
'ella
lhang
roAy.
1[[
'.
bu6ng
thang
den
san
Hh;lg,
lam
quay
then
cai,
then
cAi
tac
dOng ll!n
m¢t
trang
cac
ham
cu6i
PK
va
rna

dung
theo
tang
NC
2
ha/)c bttng clin
dong
- rna
cua
bing.
Cong
Mc
chuyen
ddi tAng
ICDT
+
5CDT
co
ba
vj
tri
h'i
cam
bign
dung
bu6ng
thang
va
xac
djnh

IGT
+
5GT
va
trang
bu6ng
thang
bang
cac
nut
bAm dgn tAng
lOT
+ 5DT.
Khoi dOng cho
thang
may
lam
vi(!c
chi
khi
:
ID
kin,
ICT
+
5CT
kin
(cac
cua
tang

bu6ng
thang.
Ngu
trang
bu6ng
thang
co
ngl.1bi,
tiep
diem
cUa
chung
rna ra.
IHC
da:u
song
song
vai CBT cho nl!n
du
IHC
hO
nhung
m!;lch
vAn
n6i
li~n
qua
CBT, cbn
2HC
mo

chieu
sang
buang
thang
D
6
,
Khi co
ngl.1bi
trong
bu6ng, tiep
diem
2HC
rna
ra,
cuOn
day
role
trung
gian
mAt di(!n,
tiep
di~m
thubng
kin
RTr
dong
I/ili
lam
cho

di,it
trang
nha
nam
t.1ng
va
cha
tru'bng
hQp
bu6ng
thang
dang
nam
a
tllng
ml)t.
Xet
nguy~n
Ii
lam
vi(!e
cua
so d6
khi
can
len
tang
4.
Hanh
kha.ch di vao

4 DT,
rale
tang
RT4
co di(!n.
Cac
tiep
diem
cua
RT4
dong
ll;li
dip
ngu6n
cha
cuOn
dAy
cua
c6ng
tiic
ta
t6c
d¢
caa
C.
Cdc
tiep
diem
cua
congtacta

Be
dong
tigp
diem
I PK, cuOn
dAy
cOngtactd N co
_di(!n.
Cu(>n
da.y
stator
cua
d¢ng
ca
dllQC
ca:p
ngu6n
qua
cac
tiep
diem
C
va
N,
bu6ng
thang
di
l~n.
Nam
chAm

dit1m T
(thllbng
kIn)
vA.
N
(da
dong
l~i).
D6ng
thbi
cuOn
dAy
cua
rale
4RT
vAn
dUQc
tief:!
tyc
duy'
trl
ngu6n
ctlp
qua
c6ng
tdc
chuy~n
d6i Uing
4CDT
va

dAy
cOngtdcta
t6c
dO
thtlp
T
cd
dililn
qua
tiep
diem
thllbng
ho
N
(dA
dong
kin)
va
tiep
diem
thllb'ng
kin
C.
Cul)n
dAy
stator
cua
dl)ng co
dllQC
da:u

CL,
hai
nam
chAm NC
l
vA
NC
2
ma:t
di~n.
NC
2
mtlt
di(!n
lam
cha
hAm cu6i
HC
kIn
l/ili,
vAn
duy tri
ngu6n
cd'p
cha
coOn
dAy
cOngtdcta
N.
Khi

l~i
vA
phanh
hAm
di~n
tu
NCH
s@J
hAm
dung
hu6ng
thang.
H~
th6ng
t\1
dQng
kh6ng
ch~
thang
mliy hoAn
toim
t1.1ong
t\1
nh1.1
t~n
khi
di(!u
khi~n
bAng
cAc

D~
truy(!n dQng
thang
mliy
cd
t6c
dQ
di chuy(!n
bu6ng
thang
v
~
3 rn/s,
th1.1bng
dung
M truy(!n
d¢ng
-mQt
chi(!u.
Bu6ng
thang
d1.1Qc
treo
Mn
puli keo
cap
n6i
tI1,1c
tiep
v{ji

Vi
vt'H
t6c
dQ
di
chuy~n
bu6ng
thang
lan,
cOng
tAc
chuy~n
d6i
bing
co
kh{
lilm
vi~c
khOng
tin
c$.y,
gAy
ra
tieng
6n
Um.
C6ng
t~c
chuy~n
d6i

t~o
vil
d~c
tuyen
clla
cOng
tAc
chuy~n
d6i
bing
dung
bet
cam
bien
vi
trf
kit~u
cAm
dng. Ctlu
t~o
cua
no
bao
g6m :
m~ch
tu
M 2,
cu¢n
dAy
3. Khi

m~ch
tu
tAng, lilm tAng
di~n
cam
L
cua
cuQn
dAy
vil
dong
di
qua
cuQn
dAy
sll
giam
xu6ng.
S\1
ph\1
thu¢c
diQn
cam
cu¢n
dAy
L vilo
vi
trf
thanh
dQng 1

M
th6ng
di~u khi~n.
Tuy
.thuQc
van
m\1c
dich
su
d\1ng,
co
th~
dung
no
lilm cOng
tAc
chuy~n
d6i tling,
cam
bien
de
th\1C
hi~n
dung
chinh
xac
bu6ng
thang
ho$,c
cAm

lri
ki.!u
dm
ung.
/.1-
Cdu
telO

b-
S41
phil
tlauDe
L = f
(1).
5
1,0
0)
""
2201"
feB
RTr
C8
I
Ilf
I
I I
c
c
1IJ
114

D~
nAng
caa
dQ
tin
~y,
song
song
vlti
cUQn
dAy
cua
bl)
cam
bi~n
co
da:u
tMm
mOt
t1,l
C,
Trj
86
di~n
dung
ella
tl,l
di~n
dll~C
ch9D BaD

Um
lAm
cho
no
tac
d/)ng.
Khi
ml;lch til:
kin,
dbng
dili\n
di
qua
cu¢n
dAy
giam
xu6ng
glln
b~ng
khOng,
role
khOng
tac
dQng.
ThOng
thub'ng
b(l
cam
bii!n
CB dl1QC

thang
mAy
caa
t6c
vCii
v = 2 m/e
va
trvng
tlli Q = 1000
kG.
Phttn
!lng
cua
d¢ng
CO'
truy~n
d¢ng
dllQC
ca:p
ngu6n
tu
b¢
bi@'n
d6i
dnh
dung
thyristor
t~o
hOi
2

thyristor
dUng
m~ch
R-C.
Bao
vi)
ngAn
m~h
ba.ng
du
chI tAc
dl)ng
nhanh
CC.
CUQn
khAng
lCK
va
2CK
dung
dA'
h~n
ch~
dbng
dii)n cAn
b~ng.
M~ch
di~u
khi(!'n
bl?

kh6i
di~u
khi~n
bao
gdm
cac
khAu :
khau
d6ng
pha,
khau
tl,lO
di(\n
ap
rAng cUa, kh:1u
so'sAnh
va
tl;\O
'xung
va
khau
khu@'eh
d~i
xung.
Nguy~n
If
lam
vii)c
eua
Sd

dii)n
ap
dj)t
do
khAu
di~u
hanh
DH
quy@'t
d!nh.
Di(\n
Ap
ra
ella
khAu
hl;\n
eh@'
gia
t6c
HCGT
tAng
dlln
theo
ham
tuy@'n
tlnh
b$C'
nh4t
khi
thay

dl;\i
86
hai
tin
hi~u
:
tin
hi~u
chu
d~o
(dii)n
ap
ra
(Jua khAu
HCGT)
va
dn
hi~u
phan
h6i
Am
t6c
d¢
tl
l~
v{Ji
tde
dl)
.quay
cua

mAy di
l~n)
vA
RJH
(khi
thang
mAy
di
xu6ng).
CA
hai
khAu RJN
va.
RJH
dung
bQ
khu&h
dl;\i
m¢t
chi~u
(ham
ti
1(\,
tich
phAn
Pl).
Ngoai
ra,
tin
hi~u

khau
2 K,
dlla
van
R,H.
TIn
hi~u
ra
eua
khAu R,N hO$e
~H
ehInh
1A
tin
hi~u di~u
khi~n
dlla
vao
kh6i
di~u
khH~n
Wong
ung
KDKN
hoi;\e
KDKH.
De
th1,1"c
hi~n
dung

ehinh
X3.c
CEDCS
dlla
vAo
khAu dit1u
chlnh
vi
tri
~,
Khi
bu6ng
thang
nAm
ngang
voi
san
tting,
tin
hi~u
ra
eua
khAu
CBDCS
s~
bAng khOng.
~
~~
"'(~
'"

II
"
I''-JT/~
'I
HI
-"'"
!~
~
~
~
SIT!
I{,K
I
1<
2ft
\
CPR
.
.r
·e·/
r'
Sit,? .
II
.'
~
:,,!J11-
1m
~
~
-=

d~
kh6.i
cua he
8th
- D.
~
'"
~
"
bl
'.
§3.7.
Tl1
DONG
KHONG
CHE
THANG
MAy
DUNG cAc PHAN
TtJ
LOGIC
D~
nAng
eaa
dci
tin
c~y
trong
qua
trlnh

m~ch
di~u
khi4n
cho
phep
xAy
dvng
mOt
M
th6ng
di~u
khi~n
v(i:j
86 h1Qng
phttn
ttl
di~u
khiA'n
IiI.
it
nhilt.
Sa
dd
tv
dOng
kh6ng
cht'!
thang
mAy
dung

chi
h(l
xu6ng
tiing
mOt.
C6ng
U.C
chuy~n
d6i
tl1ng
dung
bl)
cam
bi~n
vi
tri
bing
t~
bito
quang
di~n
IF
-7-
5F
dfil.t
trl!n
cae
tl1ng
tuong
ung.

chuygn
d6i tdng).
Tr~n
so d6 khOng
bi~u
di.l!n
m~h hlc
cUa
d¢ng co
truy~n
dOng
thang
mliy,
nhung
clin
hi~u
cOngtActo nAng N
s~
ddng
m~ch
cho dOng co nAng bu6ng
thang
di
l~n,
cOngtActa
h~
H
ddng
m~ch
cho dOng co

lGT.
Tr~n
so d6,
cAm
bi~n
IF
+ 5F,
HCN
vA
HCH
(6
vu6ng
t6
d~m)
co mllc
lOgic
"In
va
khi co
tac
dOng
tii:
Mn
ngoi'li
IA
muc'IOgic
"0",
cAm
bi€n 2DT +
5DT

5DT,
dliu
ra
cua phtrn tti "HO';'C"
5H
cO
muc
lOgic
nl"
va
muc
do
dua
vao I dtiu
vi'lo
cua
phtin
tu
"VAn
5V.
Til
b¢
cAm
bi€n
5F
dua
vao
dau
vao thll hai
cua

dOng
I~n
nut
Mm
5DT
vi co
mli,lch
tl,l
duy
trl
Ia'y
til
dt'iu
ra
cua
5V
dua
vao
dau
vao 5H,
kh6ng
cho
phep
5H
chuygn
tr~ng
thai.
Tin
hi~u
1'a

phan
tti
~vA"
6V.
Tin
hi~u
thll hai phlin ttt "vA -
DAO"
ID- cd
muc
lOgic
"1"
(do
dt1u
1'a
cu~
lV
cd
muc
lOgic
"0"). TIn
hi~u
til
dliu
1'a
cua
cOng
tAc
hAnh
trlnh

tac
dOng. D¢ng co
sl!i
dUQc
dong
vAo
ngu6n
clI:p
theo
chi~u
nAng
bu6ng
thang
di
l~n.
Khi
bu6ng
thang
di d€n tt1ng na.m,
s~
tac
dOng
l~n
cAm
bi€n 5F,
lam
cho
tin
hi~u
1'a

dn
hi~u
1'a
cua
6V co
muc
lOgic
"0",
cO;ngtActo
N milt
di~n,
dOng co ngi1ng quay,
bu6ng
thang
dilng
dung
{J
tt'ing nAm.
Mu6n
hl;l
bu6ng
thang
xu6ng
tdng
mOt,
iln
nut
t1n
lGT,
tin

IV
co
mac
lOgic
np,
cu¢n
dAy
cOngtl1ctd H co
di~n
dong
di~n
cho
dQng
cd
thea
chi~u
quay
hf,l
bu6ng
thang.
(~T
44
1.
If
IY
1.
I +: j
&
/f{1I
Hloh