He thong miy, gdm: Mgt mdy chinh cd chic nang cdt-vdt rong, cd dgi, luc binh cung hai thi hi phu trd theo miy chinh bao gom, miy bing tdi di ddng dung cho vin chuyen sin pham sau cdt-v
Trang 1F NGHIEN CLfU-TRAO01 vNGHIEN CO'U, THiiT K i CHE TAO MAY CAT - VOT RONG, C6, LUC BiNH TREN KENH RACH, SONG, H 6
RESEARCH, DESIGN, MANUFACTURING OF THE AQUATIC WEEDS
HARVESTER ON THE CHANNELS, RIVERS, IRRIGATION RESEVOIR
AND IMPROVEMENT PROPOSALS FOR THE EFFECTIVE PRODUCTION
PGS,TS Bill Trung Thanh, PGS,TS Nguyin Quoc HUng, Nguyen Minh Cddng, Dang Van Hie
TrSn Ngoc Vu, Duong Tien Doan
Trildng Dai hgc Cong nghiep TP H6 Chi Minh
TOM TAT
He thong miy cat - vdt rong, cd dgi, luc binh vd rdc thii noi tren kenh, rach, sdng li di t nghien cUu khoa hgc cap Nhi nUdc, thugc chuong trinh che tgo miy KC05-01/06-10 Bl tii dugc ti gid cung cdc cgng sU cua TrUdng Bai hgc Cdng nghiep TP Hd Chi Minh thUc hien dua trln nguyen cua miy cat vdt rong, cd dgi cua hing Aquamarine (Canada) vi hing Aquarius (USA)
HI thdng may dd dUdc che tao, khio nghiem vi dUa vio phuc vu cat, dgn vl sinh cic kenh rat cua tinh Tiy Ninh, TP Ho Chi Minh vi tinh Kiln Giang, dgt kit qui tdt Sau ngdy nghiem thu, tdc gi cung cdng sU dd tiep tuc nghien cUu hodn thien, bo sung tinh ning, cdi tiln, hieu chinh vd nang cc miu miy, nham cd the dUa mdy vio sdn xudt dgt hieu qui Tic gia vi cgng sU di thi nghiem ip dm vio sdn xudt dUdc 03 miy logi B2.36 (bl rdng cit-vdt rong, cd luc binh 2,36m) vi dUdc cac ddn vi s dung dinh gii tot
He thong miy, gdm: Mgt mdy chinh cd chic nang cdt-vdt rong, cd dgi, luc binh cung hai thi
hi phu trd theo miy chinh bao gom, miy bing tdi di ddng dung cho vin chuyen sin pham sau cdt-v lin phUdng tien van tdivi lim nhiem vu van chuyen miy chinh di tren dudng ket hgp vdi triln hg thi dUa may xuong sdng lam viec
Bii bio trinh biy cdu tgo, die diem, hoat ddng cua cic thilt bi chinh cua he thong miy cung v mdt sd kit qud khdo nghilm mdy Trln cd sd ket qui khdo nghilm miy trong sin xudt vd tiep nhe cic ylu cau thttc te tgi cdc dia phUOng tdc gii cung cic cdng sU dd xdc dinh dugc nhing vdn de cc ton tgi cua mau may dl tdi, tUdd, tiep tuc hodn thien thiet ke, hodn thiln cdng nghe che tgo, quy trit van hdnh si dung, de hieu chinh mdt so cum cung nhu bo sung them mot so cum mdi md trUdc dt
de tii KCOS.01/06-10 chUa cd dilu kien thUc hien Ngodi ra, tdc gid vd cgng sU cung dexudt nhiem i tiep tuc thiet kl, chi tgo cic nhdm mdy cd kich thUdc vd cdng sudt nhd hdn so vdi mdy B2.36 de cd tl
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cat -vdt luc binh, giup cho viec ve sinh trin cdc kinh rach npi thdnh TP Ho Chi Minh co tiet diin , cung nhu thiet ke, che tao loai mdy co kich thUdc vd congsudt ldn hdn died the Idm viec trin cdc s cdi CO tiet dien ldn hdn, kit hdp chdt che vdi mdy trung chuyen tren sdng de ndng cao hiiu qud lam cua mdy chinh
Tii khoa: Mdy cdt-vdt rdng, cd, luc hinh mdy, bdnh xe niidc, dao cdt co tdm ke, guong gat, p noi, guong gat, hdng tdi di dpng, trien ha thiiy
ABSTRACT
The aquatic weeds harvester is a national subject of the programs KC05.01/ 06-10 The au and et all of the industrial University of Ho Chi Minh executived that based on principles of weeds cutter Aquamarine company (Canada) and Aquarius company (USA) The aquatic weeds harvester syst have been designed manufactured and tested to cut -pick up aquatic weeds, water hyacinth for cleaning channels of Tay Ninh, Ho Chi Minh City and Kien Giang provinces which gets out achit positive results The author and his colleagues continuous to study for complete additional feati improvements, and upgrade to be able to put the machine into the production efficiency The author his colleagues have improved and developmented two model B2.36 in to efficiency practice, (widt cutting-picking up for aquatic weeds is 2,36m)
The aquatic harvester system includes a main machine which cut-pick aquatic weeds,w hyacinth in ihe river, irrigation lakes and two auxiliary devices The auxiliary first is shoe conve which convey products from aquatic weeds harvester to the river bank and the other is both trans^ the main machine and launching the main machine up and down from river
This paper presents the structure, characteristics and operation of the a quatic weeds harve with some tested results Especiallythe practical testing problems and actual requirements accessn
at the local channes, and rivers The author and et all are also found that more models need to conti
to design for development, as well as corrected some main components or add to build new equipn that were no execution conditions in the previously subject ofKCOS.Olf 06-10 Besides the author e also need to continue to design and manufacture the new machine groups which are smaller size t the B2.36 model to be able to work in the narrow inner city canals or the other new groups are la size such as B4.0 model which to be able to work on the large river with their width from 200- 30 This model B4.0 will combines with a transit machine on the river to enhance the workingefficienc the aquatic harvester
Keywords: Aquatic weeds harvester, paddle whell, float.cutter unit, cutter bar, conveyer, s
conveyer, tildesk, reel
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Trang 3r
NGHIEN CLfU-TRAO D(
1 GlCri THIEU
TrUcfc thuc trang van nan rong, co dai,
luc binh, rac thai noi phat trien va xam lan dong
chay, anh hudng den cip thoat nUcfc trong nong
nghiep va chong ngap ung cho cac do thi, can
trd giao thong dUdng thuy, nuoi trong thuy san,
ve sinh moi sinh tren k^nh, rach, ao ho chiia
n U d c t h a n g 4/2007, Bo Khoa hoc va C6ng
nghe Van phong cac ChUdng trmh trgng diem
cap Nha nU6c da xet duyet va giao cho TrUdng
Dai hgc Cong nghiep TP Ho Chi Minh to chiic
nghien cUu va thUc hien de tai: "Nghien ciiu tinh
toan, thiet ke va che tao may cat-vcft rong, co dai,
luc binh, rac thai noi tren kenh, song, ho thuy
lui"
Ke thUa cac k^t qua nghien cUu, tham do
trong nhieu nam trU6c do, tham khao cac mau
may cat-vdt rong, co dai tren song cua Cong ty
Aquamarine (Canada), Cong ty Aquarius System,
Cong ty United Marine International (USA), tac
gia va nhom nghien cUu da thUc hien cong tac
tinh toan, thiet ke, che tao va khao nghiem 01
he thong may cua de tai trong dieu kien thUc te
tai Tay Ninh Lan khao nghiem thU nhat vao
thang 7/2008, hieu chinh va khao nghiem tiep
lan thli 2 vao thang 12/2008, tiep tuc hieu chinh
va khao nghiem lan thU 3 vao thang 3/2009
[2] De tai da dUoc nghiem thu va tiep tuc theo
doi thucfng xuygn tinh hinh lam viec cua may
mau tai hien trUcJng De tai da trien khai che tao
them 2 he thong may phuc vu nhu cau cua san
xuat He thong may dap Ung dugc cac muc tieu
va ngi dung nghien cUu dat ra trong thuyet minh
va Hgp dong Trong bai bao nay, chiing toi trinh
bay can tao, quy trinh van hanh cac cum chinh
cua mau may thupc de tai KC05.01/06-10; Danh
gia ket qua lam viec cua he thong may, sau mot
thcJi gian dai hoat dgng trong dieu kien thUc te
tii ngay nghiem thu den nay
He thong may the he dau tien cua de
tai dugc lap cho vung ho Dau Tieng (thah 1 Ninh), da lam viec 6n dinh, dat cac yeu cau b dau, dugc dia phuong chap nhan Nhieu c phuong khac da den xem xet, quan sat va tr tiep kiem tra chat lUgng, xac nhan cac thong
ky thuat can thiet cua he thong may tai cac d
diem v6i cac dieu kien lam viec khac nhau a
vung ho
Noi chung, cac doan cong tac deu t danh gia tot ve mau may nay, d^u thong nhat ct rang, day la mau may phu hop vdi dieu kien kir
te, xa hpi va trinh dp cong nghe, kha nang t chinh cua Viet Nam hien nay Cac dia phUOng c dat hang Ung dung san pham cua de tai De tai c che tao them 02 he thong mcfi va da ban cho T
Ho Chi Mmh va tinh Kien Giang Den nay sa nhieu nam, ca 03 he thong may the he dau tie van lam viec on dinh, phuc vu tot nhu can cat vcft rong, CO dai va luc binh cua cac dia phuon neu tren
Chu nhiem de tai va nhom cpng sU da t chUc cac cupc hgi thao "dau bcf" vdi sU tham gi cua dai dien cac tinh d6ng bang sdng CUu Lon
va TP Ho Chi Minh Da cd nhieu gdp y quy ba xuat phat tU nhu cau thUc te tUng dia phUc(ng, k
ca cac don vi dang sif dung he thong may cua d tai: De tai can chu y hoan thien va bd sung thie
ke (bd sung them 01 may trung chuyen de lie hop vdi may chinh, nham giam thdi gian ma chinh chay vac bd dd chat thai (rong, cd, lu binh) va chay khdng tai trd lai noi thu nap ronj
cd, luc binh da cat de tiep tuc chu trinh mdi) C the coi san pham cua de tai la he thdng may c kich thude va cdng suat trung binh, can bd sun them 02 loai nfia vdi kich thUdc, cdng suat nh hon va ldn hon He thong may, vdi kich thud
va cdng suat nhd hdn can dimg cho cac vun kenh rach ndi ddng He thdng vdi kich thUdc \ cdng suat ldn hon se phu hop vdi cac khu vu sdng Vam Cd, thupng ngudn sdng Sai Gdn Ti
ca 03 loai may deu phai dam bao dat cac thdng s
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]<y thuat CO ban, chat lugng va do ben tot, gia
ban khdng cao Dac biet, cac may phai dam bao
thuan lgi cho viec van tai nham di chuy& tU
doan sdng, hd nay sang doan sdng, hd khac khi
dUa he thong may tU sdng len bd, tU bd xuong
sdng hoac khi can di chuyen qua cac cau cong
thuy lpi cd tai trgng cho phep khdng ldn
Cac dia phuong da cd cac hgp ddng
nguyen tac dat hang cu the cho 03 loai may neu
tren Nhdm nghien cUu dang tiep tuc trien khai
cac cdng viec can thiet, nham cho ra ddi cac th^
he may cat - vdt rong, cd dai, luc binh the he mdi,
nhUng cd kich thUdc khac nhau, cd cac tinh nang
vUgt trdi so vdi the he ban dau
2 GlCfl THIEU MAU MAY CUA DE TAI
2.1 Hien trang
TrUdc thiic trang rong cd dai, luc binh
anh hudng den ddng chay, mdt sd dia phuong da
dUa ra giai phap: SU dung ca nd, tau thuyen nhd
cung lao ddng thu cdng dung cdng cu cau liem
thUc hien khoi ddng chay tam (hinh 1) Mdt so
cdng ty thuy lgi da che tao cac thiet bi thu gom
rac, luc binh dat cd dinh tai tram bdm, hay che
tao ra thiet bi vdt rac gan tren dau ca nd de ddn,
gom vat ndi phia trUdc, sau dd, cdng nhan se
dung tay de gom nhat rac va dUa vao thung chUa
nhd dat tren ca nd d l van chuyen ve dia diem tap
ket
TSt ca cac thiet bi n l u t r l n deu cd n h ban ch^ sau:
- Khdng cat dUdc rong, cd chim c nudc hay mgc lan tU bd ra ngoai sdng;
- Khdng gom dUdc luc bhih, rac co
dp cao;
- Khdng tu h k i h di chuyen quanh vUc can dpn ve sinh;
- Khdng tif chuyen dUpc san p h & i cat vdt len bd de xU ly theo yeu cau
Hinh 1 Sd dung be tre vd cdu liem de cat rong
khdi dong chdy trin song thupc ho Ddu Tieng,
tinh Tdy Ninh
2.2 Hoat dong cua may de tai
May cat-vdt rong, cd dai, luc I (MCVRCLB) trinh bay tren hmh 2, la mot t
bi tu hanh, cd hai guong nUdc lap hai ben (pa wheel) Hai banh xe nUdc dUdc truyen d bang hai md to thuy lUc, cd the dieu chinl vdng quay dpc lap vdi nhau, cung nhU cd nang doi dUdc chieu quay thdng qua dieu kl
cac van thuy lUc tren cabin lai May cd thi
sang phai, sang trai hoac quay vdng de dang ngUdi lai dieu khien cac van thuy lUc
Rong, cd dai va luc binh dugc cat b mdt he dao, bd tri ngay dau ciia hgng gom, g Mdt bd dao dat ngang phia dUdi ban gom va
bd dao cat dUng, bd tri dpc hai mep bien ciia gdm Ba bd dao tao thanh mdt he dao cat cd h che U, bd tri phia trUdc may, bao dam qua ti cat sach rong, cd t r l n toan bd dien tich { trUdc khi may di chuyen den Khi may lam ^ hgng gom (hinh 5) dUpc ngUdi lai dieu khien xuong theo do sau kenh rach Cd, rong, liic b rac thai dupc he dao cat lia khdi mang va lua hgng gom khi may tinh tien den Bang tai s (hinh 5) van chuyen san pham sau cat vdt phia tren, rdi tiep tuc dUpc chuyin vao banj ngang sd 2 (hinh 9)
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NGHlfN Cliu - TRAO E
Hinh 2 MdyB2.36 cia dl tdi KC05.01/06-10 dang
Idm vile tren sdng thugc khu vUe hd Ddu Tieng,
tinh Tiy Ninh
Bang tai so 2 dat ngang tren boong, co
che do lam viec gian doan, quay duoc theo hai
chieu Mile dp ch\Sa san pham sau cat-vcSt tren
bang tai 2, tuy thuoc vao ky nang cua ngudi lai
Khi bang tai so 2 day nguM lai dieu khien bang
tai so 3 hoat d o n g Bang tai so 3 (hinh 10) tiep
nhan rong, co til bang tai so 2 qua Bang tai so 3
cflng CO che do lam viec gian doan, quay duoc
theo hai chieu, co chUc nang chUa san pham nhu
bang tai so 2 Khi bang tai so 3 day, ngudi lai dieu
khien banh xe nUdc (hinh 11) quay may vong
vao hd de do san pham len bd
San pham sau cat- vert co the duoc dua
thing len bd bang bang tai so 3 d l lam kho tU
nhien (khu vUc co dia diem do) Doi vdi khu
vUc khong CO diem do hoac can thu gom de lam
phan vi sinh thi duoc dUa len xe tai thong qua
may bang tai dl dong (Shoe Conveyer (hinh 3)
May bang tai van chuyen tnmg gian cd
chiic nang tU van hanh bang may nd tinh vdi
cdng suat 9 HP Hoat dong cua bang tai va dieu
chinh bang tai len xudng theo chieu cao cua xe
tai, tiep nhan tai deu bang he thdng thuy li!c [4]
^ Ro-mdc chuyen dung (Tilt Desk (hinl
cd nhiem vu van chuyen may cat vdt rong, cd den cac dia ban khac nhau de lam viec Nf
ra, ro-mdc cdn cd chUc nang dUa may ch
len khung da nang bang tdi keo ho tro dS
chuyen may di tren dudng va cd the lam trier thuy khi can dUa may xudng nUdc [4]
Hinh 4 Trim hg thiy dang thUc hien hg thuy md chinh xudng sdng de Idm viec
2.3 Cau tao, dac diem lam viec cua cac cu chinh cua may (MCVR C LB)
2.3.1 Cum dao vd bangtaiso 1
Cum may nay cdn goi la hong cat-go (hinh 5), dupc thiet ke nghieng mdt gdc a so v phuong ngang cua may Nhiem vu cua cum cat va gom san pham sau cat vdt len bang tai
2, hpng gom dupc nang len, ha xudng thdng c:
xi lanh thiiy luc dieu khien bang mdt van thi lUc Viec dieu chinh hpng gom len, xudng troi qua trinh lam viec cho phep may cd the cat-v duoc rpng, cd, luc binh d cac dp sau khac nha Gdc nghieng cua ban dd se ket hop vdi phuoi tien cua may lam cho tpan bp rong, cd, rac sau c
dupc hUng toan bp, rpi chuyen len bang tai sp 1
Hmh 3 Mdy bdng tdi dung van chuyen rong, cd, luc
hinh tU mdy CVRCLB len xe van chuyen
Hinh 5 Cum hdng tdi sd 1 vdhedao cdt: 1) He dao cat; 2) Khung dd hi dao cat; 3) Bdng tai; 4) Lo xo giu bdng tdi; 5) Khung dd
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2.3.2 Cum dao cdt
Cum dao dUdc bd tri ngay dau hgng gom
(hinh 5) He dao cat dUdc thiet k^ theo nguyen
ly cat trugt cd tam ke ki^'u tdng dd Khi dao lam
vi^c, rong, cd se dugc cat, thai tren tam ke, bao
dam qua trinh cat thai diit khoat, nhUng lUc can
cat lai thap Ba bd dao cat hoat ddng bang cd cau
bien tay quay vdi cam lech tam dUdc lap thang
len true ddng ca thuy lUc Bd dao cat gdm cac
ludi dao rdi lap chung tren mdt thanh dao (de cd
the thay the tUng cai trong trUdng hdp mdt trong
sd dao bi hU hdng hay mdn) LUdi dao cd dang
hinh thang can, hanh trinh chuyen ddng S = 76,2
m m [3]
Cac ludi cat cd chau de giam hi^n t trugt Truyen dpng cho 3 bd dao bang 3 n
thuy lUc lap song song hoat ddng cung tdc d
2.3.3 Bdng tdi s62
Rong cd, luc binh, rac ti^p tuc chuyen len bang tai sd 2 (hinh 9) Bang tai st mat cau tao va chUc nang nhU bang tai sd 1 ] khac la bang tai sd 2 d^t cd dinh theo ph
nam ngang a = 0° Bang tai sd 2 cd nhiei
chlia san pham sau cat-vdt t^m n^n ho^t khdng lien tuc (chi chay khi cac ddng chi dat den diem chiia ldn nhat) Truyen ddnj bang tai sd 2 gdm, hai md td thuy lUc gan ha bang cho phep bang tai chay dugc hai chi^u linh boat trong viec chUa san pham Khi tai, ngUdi dieu khien se dich chuyen dSn ddng rong, cd, luc binh (do bang tai 1 dUa dan ra phia sau, moi khi da tao dUdc mpt
du d^y
Hinh 7 Dao cdt ngang
Hinh 8 He dao cat trong khong gian 3 chieu vd cdu
tao mpt ludi dao cat
Hmh 9 Bdng tdi sd 2: 1) Motor bdng tdi; 2) Goi dd true; 3) True ehu A 4) Xich tdi dang ludi; 5) Khung bang tdi; 6) True b,
Khi san pham dUdc chiia day khap bang tai thU 2, ngUdi ldi lai tiep tuc vdn hanl bang tai thU 3 ho^t ddng de tiep nhan san j
tU bang tdi thU 2 chuyen den de lai tiep tuc khien chUa tai nhU bang tai sd 2 da trinh 1 trgn [3]
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NGHigN CIJU - TRAO £
2.3.4 Bang tai so 3
Bang tai sd 3 (hmh 10) bd tri sau bang tai
sd 2, cd chcfc nang tiep nhSn rong cd til bang tai
sd 2 chuyfo qua Ciu tsio va chiSc nang nhu bang
tai sd 2 nd viia duoc dat cd dinh theo phuong
nam ngang a = 0°, ddng thdi, cQng cd the d i &
chinh nghieng gdc > 35" bang cap xi lanh thuy
lUc khi can thUc hien chuyfo va dd san pham
sau cat vdt Ifo bd [4] Bang tai sd 3 cung cd tinh
nang chay dupc hai chifo nhd bd tri hai md to
thuy lUc d hai dau bang Khi san pham sau cat vdt
da chiJa day trfo bang tai thil 3 thi hoan thanh
mdt chu trmh boat ddng cat, vdt cila may chinh
NgUdi lai chuyfo hudng may chinh, chay vao bd
va difo chmh nang bang tai sd 3 len mpt gdc du
il bang tai thiJ 3 tiep can bd va ddng thdi dilu
khifo di ca bang tai sol, sd 2 va sd 3 cUng hoat
ddng de chuyfo toan bd san pham sau cat vdt Ito
bd Khi may lam viec t r t o sdng cai cd kich thude
rpng, viec may chinh phai Ufo tuc vao ra de dd
sin pham da lam giam hieu suat lam viec cua
may chinh Trong difo kifo nay, d My va Canada
da ap dimg dUa them 01 may trung chuyfo vao
hi may, khi ay, hieu qua lam viec cua may chinh
se dUdc tang Ifo
Hinh 10 Bdng tdi so 3 chia, van chuyen vd dSsin
pham sau cat vdt len hd:
1) Goi dd gida true; 2) True chu dong; 3) Motor
bdng tii; 4) Gdi dd ddu true; 5) Xich hdng tdi ludi
6) Khung bdng tdi; 7) True hi tdng
2.3.5 Bdnh xe nude (guong nUdc)
Banh xe nudc cdn gpi la gudng n (paddle wheel (hinh 11), dupc lap hai bfo p ndi Hai banh xe nUdc cd nhiem vij tao d lUc day toin bd may (MCVRCLB) chuyfo d tifo, chuyfo ddng ldi, quay phai, quay trai tl yeu cau khi lam viec t r t o sdng [5] Hai banl nudc dupc truyfo dpng bang hai md to thuy) chiing cd the difo chinh sd vdng quay ddc vdi nhau, cung nhu cd kha nang ddi dupc ch quay thdng qua difo khifo van thuy lUc trfo c
in lai
Hmh 11 Kit cau hdnh xe nUdc
2.3.6, Phao noi
Phao ndi (pontoon (hinhl2) dupc dai gia la mpt trong sd cac cum quan trpng cila m (MCVRCLB) Phan ldn tat ca cac cum thiet nhU: Bang tai sd 2, bang tai sd 3; dpng cp r bpm thuy luc, cac dUdng dng dau thuy Ivic, 1 lam mat dau n h i t o lifo, thiing chiia dau th lUc, cabin chp ngUdi lai, dfo dupc bd tri va c
d mat trfo cHa phap ndi [2]
Mltl!
Hmh 12 Phao noi
Dac diem cua phao la mat t r t o cd k cau d^ng mat phang, bfo trong phao gdm, c khoang rdng khdng thdng vdi nhau, nham ngi
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khdng cho nUdc lot giUa cac khoang vdi trUdng
hpp, mdt trong so cac khoang cd stf cd Igt nUdc
Ket ciu khung phao dUdc che tao bang thep hinh
chiu lUc va bao ben ngoai bang thep tam 5-6mm
[2],[5]],[6],[7]
2.3.7 Cum gom rdc
Cum gom rac (hinh 13) la no life sang
tao cua tac gia cung cac cgng sU theo quan diem
thiet ke "hai trong mdt" May thUc hien cat -vdt
rong, cd dai, luc binh vdi be rdng
Bj= 2,36 m, ddng thdi, cd the vdt rac vdi
be rdng lam viec len B^ = 4m Viec tinh toan,
thiet k^ gan cum gom vao may va dieu khien
cum gom yeu cSu phai cd ddng, dam bao trd lUc
khi may di chuyen vdt rac phai thap nhat
Hmh 13, Bpgom rdc thdt lap vao hong gom
cua bdng tdi sd 1
Khi thUc hien chUc nang gom-vdt rac,
hai cum dao cat dpc d hai ben hgng gom dupc
thao ra va lap the cum gom rac vao de tang chi^u
rdng lam viec Thdng qua khdp ban le va hai xi
lanh thuy lUc bd tri hai ben cho phep md tay vdt
rac ra vi tri Idn nhat vdi gdc 45" Hai xi lanh thuy
lUc se giup cho tay gom cd the md ra va dUng lai
d bat cU vi tri nao trong khoang pham vi gdc md
45"
Hinh 14 Cum tay gom vd vdt rdcgdn theo n
MCVRCLB
2.3.8 Hi th6ng thuy lUc
Toan bd hoat ddng cua cac cum ciing nhu dieu khien hoat dgng cho tat c cum cua may (MCVRCLB) deu bang he 1 thuy lUc (hinh 15), thdng qua chuyen ddng cUa cac md td thuy lUc gan trUc tiep vac
truyen ddng Cung cap dau thuy lUc cho ct
to thuy lUc la bdm thuy lUc trung tam dUdc truyen ddng tU ddng cd diesel cdng suat 5 qua khdp ndi trung gian [4] Dieu khien thi [4] va sii dung mach cdng suat bang thuy mpt di6m mdi cua giai phap cho thiet bi lan trong mdi trUdng nUdc, am, xa khu dan cii
te tren boong, may chi cd dien chieu sang v tin hieu dUpc lay tU acquy 24V
3 M O T S O VAN DE CAN LUtJ t TRON
DUNG MAY
H$ thdng may (MCRCLB) da dat day du cac thdng sd ky thuat theo thuyet
da dang ky cua de tai KC05.01/06-10 (bang ] Thdng qua khao nghiem may, cung ket qua theo ddi may B2.36 thd he thii nha
viec trong thUc tien tiX nam 2009 den nay, c
tdi riit ra mdt sd van de can thao l u i n troi dung may nhU sau:
Khi cat-vdt rong, cd dUdi nUdc, ngu dieu chinh hai banh xe nUdc quay cung tdc i bao dam may di thang
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Trang 9NGHieNClJU-Khi mit dd rong, cd dai, beo vdn, luc binh
mgc dan xen dat tdi (20-220 kg/m^ van tdc tidn
hdp ly ciia may trong pham vi (0,5-0,7)m/s va
van tdc dao cat tUdng iJng la 0,6m/s se cho chat
lUdng cat tdt va dn dinh nhat Tai che dp lam viec
nay, ty 1| thu gom san pham dat tren 85%, chi phi
nhi^n lieu thap nhSt (6,8 lit /gid) va nang suat
trung binh cua may dat (0,15-0,19) ha/ gid [1]
N^u van tdc may tien nhanh hdn, se d i n den
cat-vdt sdt, khd dieu chinh chay thang va cdn xay ra
hien tupng cat chap, lam giam nang suit va hieu
qua lam viec cua may
Khi may lam viec d mat do cay nhd (<15
kg/m^), nen dieu chinh tdc do dao cat d che do
Xiib~ ^'^^ ^^^ ™ ^^n ^^^ ti^ii ^^^ ^ ^ y phai dieu
chinh d miic 0,28 m/s t, khi ay, chat lUpng cat se
tot hdn va cho phep tiet kiem nhien lieu, giam
hao mon dao cat Khdng cho dao cat hoat ddng
d che dp van tdc 0,8 m/s, ciing nhU khdng nen
cho van toe tien ciia may chay tren mUc tinh
toan thiet ke (>1 m/s) Viec tang van tdc cat vUa
khdng lam tang nang suat cat, vdt, thu hdi ma
con giiy mdn dao, gay rung ddng lam giam tuoi
thp dao, gay khd khan trong dieu khien may va
lam tang chi phi nhien heu (7,46 ht/gid)
Ty le tUdng quan giUa van tdc dao cat va
van tdc tidn cua may hpp ly nhat la I = 1,2 - 1 , 3 ,
cho phep hoat ddng cua may dat hieu qua cao
nhat va chi phi nhien heu thap nhat
Van tdc ddng nUdc d van tdc 0,5m/s, thi
chay ngUdc chieu hay xudi chieu ddng nUdc ciing
khdng lam anh hUdng den van de dieu khien
may va nang suat lam viec, tuy nhien, khuyen
cao nen di ngUdc chieu ddng chay thi viec
cat-vdt, gom se cho hi^u qua cao hdn
Khi lam viec nen thUc hien thao tac do
san phSm d hai phia de tiet Idem thdi gian hoat
ddng ch^y khdng, hoat ddng khdng tai va quay
dau [1]
^l.Cdc thong so cd bdn cda mdy (MCVCLB,
TT
1
2
3
4
5
6
7
8
9
10
11
12
13
thdng s6 ky thuat
Kich thude t6ng th^
may ( dM x rpng x cao) Nang suat
Cdng suat ddng ca
Chieu rgng cat Chieu sau cat (tinh tU mat nUdc)
Kha nang chUa toi da max
Toe dd di chuyen chay khong tai
Van tdc di chuyen khi lam viec
Chilu cao thoat tai max
Sd cum dao cat
- Hanh trinh dao S,
- Canh sac co chau
Banh guong nUdc
- So banh xe nUdc -Chieu cao ngap nUdc cua canh gudng
- Cong suat banh guong Trgng lupng kh6ng tai Tai trgng van chuyen ldn nhat
Ddnvi
m ha/h
hp
m
m m' km/h km/h
m
bo
mm
mm
mm
hp
kg
kg
SdUe
12,5 2,6
0,15-50 2,36 0-1,
8 4,6 0-1 1,6
03
76 0,5-1
02
300
6
8000
1200
Hinh 15 Mdy B.236 thd2, dang Idm viic tai vUd? qudc gia UMinh ThUdng tinh Kien Giang td ndm 20
ISSN 0866 - 7056
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Trang 10NGHIEN CUU - TRAO Ddi
Hinh 16 Mdy B.236 thd 3, dang lam viee tai kenh
ngoai thdnh TP Ho Chi Minh, do Cong ty TNHH
MTV Khai thdc Dich vu Thdy ldi TP.Ho Chi Minh
qudn ly td ndm 2015
4 DE XUAT NGHIEN CUXJ H O A N THIEN
THIET KE, CONG NGHE CHE TAO, QUY
TRlNH LAP RAP, VAN H A N H CHO HE MAY
CAT-V6TLyCBlNH
4.1 Mdt so v ^ de thUc tiln djnh hi^dng cho
nghien ciiu hoan thi$n thiet k^ va cong nghe che
tao, quy trinh lap rap, van hanh he thdng may
Van de d nhiem ngudn nUdc ngay cang
gia tang, do dd, lUpng beo tay (luc binh), cd dai
mgc lan tU bd ra ngoai sdng phat trien ngay cang
nhanh, trai deu khap cac sdng ngdi cua hau het
cac tinh trong ca nUdc Anh hUdng va tac hai
cua cay luc binh den mdi sinh va cudc sdng cua
ngudi dan ven sdng, kenh rach cd tinh thdi su va
cap bach hdn la sU phat trien cua cay rong mpc
dudi mat nUdc tren cac ddng sdng nay Bdi vay,
nhu cau iing dung may cda de tai ma cac tinh
khu viic Ddng bang sdng CUu Long va TR Hd
Chi Minh den tham quan d^u cd chung mdt yeu
cau la nang cao kha nang true- vdt va xU ly cay
luc binh dang kdt khdi cUng doc hai bd tren cac
kenh cap thoat nUdc khu vUc thanh phd, thi xa,
dac biet, tren cac sdng cai ldn vdi kich thUdc be
ngang hang tram met, mang tinh khan thia hdn
la cat-vdt cay rong dudi mat nUdc Ddi vdi Idiu
vUc kenh rach ndi thanh thanh phd TR Hd Chi
Minh, cac thi xa cd kenh, rach chay qua (chi^u
ngang kenh pham vi 20m) dang can loai may
cd kich thude nhd, vi du, lo?i Bl.O hoac (be rdng lam vi?c tU 1-1,5 m), tuy nhien
cd th^m nhieu tinh nang vUdt trdi v^ xiS vdt dupc ciy luc binh so vdi mau may c tai KC05.01/06-10 Trong khi dd, ddi vdi thUdng ngudn sdng Sai Gdn hay cac tinh sdng Vam Cd cd chi^u rdng b^ m^t sdng
tram met thi cin may cd kich thUdc cd ldi
(be rpng lam vi^c 4 m)
Van d^ hi^u suat sU dung miy chir
lam vi^c tren sdng cai ldn deu dUdc cat
de cap quan tam khi ma thdi gian cat - vc may B2.36 chi dien ra trong pham vi 10 p day, trong khi thdi gian may quay vao bd d pham sau cat - vdt va quay trd lai diem lan
cu phai mat tU 15- 20 phiit, do vay, he ma vdt rong, cd luc binh loai cd Idn phai cd may trung chuyen tren sdng
Van de tang kha nang chUa san ] bang each bam nhd luc binh, rong cd sa vdt tren bang tai sd 2 va bang tai so 3 ciing quan tam de nang nang suat chd, nham lain hieu suat lam viec cda may Dilu nay, cung cac khach hang danh gia cao NhU vay, can
ke bo sung thiet hi bam sd bd bd tri tren chinh de lam tang kha nang chuyen chd luc
Van de luc binh ket khdi cUng can chia tach va xii ly bang (MCRCLB deu quan tam va yeu cau nang cap ho^c cai tien bang each bd tri them thidt bi gudng gat 1 thiet hi cat vdt
Hmh 17 Luc binh kit khdi cdng trin sdng
ISSN 0866 - 7056
TAP CHi CO KHi V I £ T NAM Sd 5 nam 2016