- May dao gau thu~ thich hgp kh6i dao cao hon m?tbdng may dUng va nang sudt cao.
Bang tra cac he s A~ ,.kt:
H~ sAlam I1Aygau k"
Lo\li I1ftt H~ sAtoo Gau Gao Gau
kt ngfra va quing ngO\lm gau sftp I. Cat,Acat 1,08+1,05 0,95+ 1,05 0,80+0,90 0,70+0,80 Dftt canh me, 1,20+ 1,30 1,15+ 1,25 1,10+1,20 0,80 than bun
II. A set vimg, hoimg th6 150
1,14+1,28 1,20+1,40 1,15+ 1,25 0,90+1,00
. soi kich thuO'c cO'tm15mm 111.Set beo, A
1,20+1,24 1,10+1,20 1,15+ 1,25 0,90+1,00
setn~g
IV. Set kho, a
1,26+1,32
set Idn soi 0,95+1,10 0,90+1,00 0,60+0,70
hoimg th6 kho 1,33+1,37
V. Datdoikho
1,30+1,45 0,95+1,10 0,90+1,00 0,60+0,70
ciing
VI. DAt doi nui
1,40+1,50 0,80+0,90 0,60+0,80 0,40+0,50
06inin
4.2.5 Sa hlQ'Cve may dao nhieu gau
1. Cong d!lng:
May dilO nhi~u gim la 10(limay lam dAt, hO(lt de)ng lien l\JC, co nang suAt cao. May dao nhi~u gau thuOng dimg d~ dao riinh d~t cap ngfun, dUOng 6ng nuClc, kenh muong, n(lO vet lu6ng I(lch. D~c bi~t duQ'c su dl,lllg nhi~u trong khai thac dAt, khai thac khoang san Ie) thien.
Tuong tv nhu may dao me)t gau, m6i me)t gau cua may dao nhi~u gau (thong thuOng co ill 10+24 gau tren me)t may) cling lam vi~c theo me)t chu ky nhAt dinh.
2. Phlln 10\li:
- Theo dtic di~m thi@tbi cong tac may dao nhi~u gau phan ra hai nhOm:+ May dao nhi~u gau h~ xich (cac gau duQ'c glfu VaGdai xich); + May dao nhi~u gau h~ xich (cac gau duQ'c glfu VaGdai xich);
+ May dao nhi~u gau h~ roto (cac gau duQ'c glfu VaGvanh roto).
- Theo phuong lam vi~c cua thi@tbi vo; phlfO'Dgdi chuy~n cua may:+May dao dQC(phuong lam vi~c trimg vm phuong di chuy~n); +May dao dQC(phuong lam vi~c trimg vm phuong di chuy~n);
+ May dao ngang (phuong lam vi~c thlfug goc vm phuong di chuy~n). - Theo dung tich gau:
+ Co nho: dung tich gau 16+ 100 lit;
+ Co trung binh: dung tich gau 200+450 lit; + Co Ian: dung tich gau 450+4500 lit.
soAt.
3.Lp cbf,ln may dao nbiiu gau:
So veri may dao m(lt gau may dao nbi~u gau co nhUng uu di~m sau:
- Do may dao nbi~u gau lam vi~e lien tvc nen nang suAt thucrng gAp 1,5 den 2,5 lful so vai nang suAt cila may dlio m(lt gau co ciJng cong suAt.
- Kh6i IUQ'Ilgrieng Cila may dao nhi~u gau nho hem may dao m(lt gau co ciJng nang - Nang IUQ'Ilgtieu hao rieng (Tinh tren .m(lt tren dem vi dung tich gau) eila may dao nhi~u gau nho hem.
- Tinh co gieri hoa cao, hoan thi~n tfulg dao, thi eong theo tuyen, di~u khien d~ dang, thu~ 19i.
NhuQ'c di€m:
- Thieu tinh da nang.
- Gia thanh che t{lo,mua ban cao, chi phi bao duang Ian.
Do v~y vi~c su d\lIlg may dao nhi~u gau chi co hi~u qua kinh te eao khi cong vi~c duQ'c dinh hinh hoa, chuyen mon hoa cao, va pMi co kh6i IUQ'IlgIan va t~p trung .
4. Tinb nang suit va bi~n pbap nang cao nang suit: '. a. Tinb nang suit ella may dao nhiiu gau:
Nang suAt cila may dao nhi~u gau duQ'c tinh theo cong thuc sau: 60.q .n.kd.ktg 3
Q - (m /h) (3- 3) .
lOOO.k,Trong do: