T»T dl/M/Am
TRU'CJNG DH SU" PHAM KY THU AT TPHCM
KHOA CO KHi CHE TAO MAY
DE THI CUOI HOC KY 1 NAM HOC 2023/2024
Mon: Cong nghe Thiiy luc va Khi nen
Ma mon hoc: PNHY230529
De so/Ma de: 1 De thi co 6 trang
Thai gian: 75 phut
Dirge phep su dung tai lieu, khong duoc dung laptop
SV lam bai true tiep tren de thi va nop lai de
Chfr ky giam thi 1 Chfr ky giam thi 2
Diem v& chfr ky
CB cham thi thu' nhat 'CB chain thi thu' hai Ho va ten:........................................................................
Ma so S V :........................................................................
So TT :
........................
Phong thi:
..................................
Cau 1 (1.5 diem): Ve ky hieu hoac dien ten cac thiet bj khi nen tuang ung theo tung nhom cho
trong bang duoi:
Nhom 1 Nhom 2
Fen thiet bj Ve
ky
hieu Ghi ten thiet bi
Ky
hieu
Van xa khi nhanh |L
' 1
Van chan khong (Su
dung cho pheu hut
chan khong)
4 i i 2
TT
" JTi x_
1 ' ' 3
Van Logic OR (>
Van dao chieu 5/3
tac dong hang nut an
2 phia. tro ve bang 16
xo
i i
1
i
Xy lanh khi nen tac
dong kep co giam
chan co the dieu
chinh
Cau 2 (3.5 diem): Thiet ke mach dieu khien dien - khi nen co so do hanh trinh buoc, xy lanh va
cac van dieu khien nhu Hinh 1, co the dieu chinh dirge van toe chieu di ra cua xy lanh A voi
hanh trinh duoi ra chain hon co lai, mach dieu khien co che do hoat dong 1 chu ky va n chu ky.
So hieu: BM1/QT-PDT-RDTV/02 Lan soat xet: 02 Ngay hieu lire: 15/5/2020 Trang: 1
Xv lanh A SI S2
i i
m— 1.
Hinh 1: Sa do hanh trinh buac khi nen
Xy lanh B S3 S4
i i
r = u
II
......
i
Xy lanh C S5 S6
I
A + AJ. \ -
wV -
7 1
V I
if v
A i Y2
PP
So hieu: BMl/QT-PDT-RBTV/02 Lan soat xet: 02 Ngay hieu lire: 15/5/2020 Trang: 2
So hieu: BM1/QT-PBT-RDTV/02 Lan soat xet: 02 Ngay hieu lire: 15/5/2020 Trang: 3
12
0.00 Bai
™ ®11
i b 1 14*r i ! 0
4 f > r
r W i m w r
Q: 50LPM
P: 95 Bar
tHtXft”
8
•U6
3 © M j 2
1
Hinh 2: Sa do mach thuy lire va bang thiet bi may
nang thuy lire
Nhan Ten thiet bi
Bong ho do ap suat thuy lire
Xylanh thuy lire tac dong kep, khong co
giam chan
Van tran lam viec nhu van an toan
(Safety valve)
Ac-quy thuy lire
Van dong mb xa ap ac-quy thuy luc
Van dao chieu thuy luc 4/3 cua B thong
T, tac dong 2 phia bang dien, trd ve
bang 16 xo
Van tran lam viec nhu van an toan
(Safety valve) cho ac-quy thuy luc
Bom thuy luc 1 chieu luu luong co djnh
Bong co' dien
Van dong met each ly he ac-quy thuy
lire
Thung dau thuy lire
Van dao chieu thuy lire 4/3 co 4 cua
khoa, tac dong 2 phia bang dien, trd ve
bang 16 xo
Van 1 chieu thuy luc
Van loc dau thuy luc
Cau 3: Cho so do mach thuy lire cua bo phan dieu chinh vi tri trong may nang nhu hinh 2
a. Ghi nhan cac thiet bi tuong irng vao bang ten thiet bj. cac thiet bi tir 1-14. (1,4 diem)
b Tinh dirdng kinh trong Do (mm) cua xy lanh 9 de nang vat khoi luong m = 3000(kg) theo
chieu thang dirng vbi gia toe a = 5 (m/s2) va cac thong so khac tren mach thuy lire trong hinh
2, hieu suat he thong la 95%, ap suat dau thoat ra khoi xylanh Pz = 0 bar. (1,2 diem)
c. l inh van toe di ra Vout (mm/s) va di ve Vjn (mm/s) cua xy lanh 9 biet luu luong cap cho xy
lanh 9 ca 2 chieu la Qo= 30 LPM, dirdng kinh can piston bang 80% dudng kinh xylanh. (1.2
diem)
d. Tinh cong suat thuy lire Pm (kW) va cong suat dong co dien Pvio (kW) cua bom thuy lire
biet hieu suat tong cua he bom E,, = 70%, cac thong so luu luong bom va ap suat bom nhu
trong hinh 2. (1.2 diem)
So hieu: BM l/QT-PBT-RBTV/02 Lan soat xet: 02 Ngay hieu luc: 15/5/2020 Trang: 4
S6 hieu: BM1/QT-PDT-RDTV/02 Lin soat xet: 02 Ngay hieu lire: 15/5/2020 Trang: 5