1. , :
,
1 , 1 = 3= 448 ; , , :
= K K ∙ Kθ ∙ K ∙K (. .12),
= 1 ∙ 1,5 ∙ 1 ∙ 1,25 ∙ 1,25 = 2,34.
Z1 :
Z1 = 29 2 u,
u = 2,2 (. 1 ), :
Z1 = 29 2 ∙ 2,2 = 24,6.
Z1 = 25.
Z1 , Z2 L .
ν .
, ν = 1.
[] , /2 (. . 11),
ω 3 = 11,5 c-1, = 109,8 -1, []=35 .
:
= 29,7 .
. 12, p = 38,1.
38,1 12700 ( 13568-75).
2. :
Z2 = Z1×u
Z2 = Z1∙u = 25 ∙ 2,2 = 55.
Z2 Z2 = 55.
: Z2 ≤ 120.
3. U U:
.
4. , .
= (3050)p,
p . :
= / p = 3050 .
5. L, :
.
:
= 120,5.
L = 120.
6. :
.
:
=39,71.
:
= p = 39,71 38,1 = 1512,95 .
:
= 0,995 = 0,995 1512,95 = 1505,38 .
7. , L, :
L= L
L= L = 120 38,1 = 4572
8. , :
:
:
.
:
.
, :
= 304,0 ,
= 667,4 .
:
:
,
=0,7 ; z ;
Z1 = tg (180 /Z1) = tg (180/25) = 7,92 ;
z2 = ctg (180º/Z2) = ctg (180º/55) = 17,42 ;
λ= p / d1 = 38,1 / 11,1 = 3,43 ; d1 (. . 12), d1 = 11,1
:
D1 = p × (+z1 ) = 38,1× (0,7+7,9 ) = 324,8
D2 = p × (+z2 ) = 38,1× (0,7+17,4 ) = 689,5 .
:
:
Di1 = d∂1 (d1 0,175 × )
|
|
:
Di2 = d∂2 (d1 0,175× ).
:
Di1 = 304 (11,1 0,175 × ) = 295,9
Di2 = 667,4 (11,1 0,175 × ) = 660,8 .
9. n1, /
n1 ≤ [n]1,
n1 , / ( ).
n1 = n3 = = = 109,8 -1;
[n] = 15 × 103 / .
[n] = 15 × 103 / 38,1 = 393,7 -1.
, :
n1 ≤ [n]1,
109,8 < 393,7.
10. U, -1
U ≤ [U],
U = 4 × z1 × n1 / (60 × Lp) .
U = 4 × z1× n1 / (60 × Lp)= 4 × 25 × 109,8 / (60 × 120) 1,53.
[U] = 508/ ,
[U] = 508 / 38,1 = 13,33.
:
1,53 ≤ 13,33.
12. .
V = z1 × p × n1 / (60×103),
z1; p; n1= n3; .
V = z1 × p × n1 / (60×103) = 25 × 38,1× 109,8 / (60×103) = 1,74 /.
13. , Ft, H:
Ft = 1 × 103 / V,
1 ( ), :
1 = 3 = 3 × ω3 = 448 × 11,5 = 5,15 .
:
Ft = 3 × / V = 5,15 × 103 / 1,74 = 2954,5 .
14. , :
= Ft × / ≤ [],
, 2;
= d1× b3,
d1 b3 , (. . 12).
= d1× b3 = 11,1 × 25,4 = 281,94 2.
[] = 35 .
:
= Ft × / = 2954,5 × 2,34 / 281,94 = 24,56 .
[] = 35 . , .
15. S.
:
S ≥ [S],
[S] (. . 13) [S] = 8.
S ;
,
Fp , ( . 12); Ft = 2954,5 , ; K - , , 1;
Fo ( ), ;
Fo = Kf × q × a × g,
Kf ; Kf = 6 ; Kf = 3 , 40; Kf = 1 ; q 1 , /, q = 5,5 /;
= 1512,95 = 1,51 ; g = 9,81 /c .
, :
Fo = Kf × q × a × g = 1× 5,5×1,51× 9,81 = 81,47 H.
Fv , ;
Fv = q×V2,
V, / .
Fv = q×V = 5,5 × 1,742 = 16,65 ;
:
|
|
= = 41,6.
41,6 > 8, , .
16. :
F = K × Ft + 2 × Fo,
K (. . 10).
F = K×Ft + 2×Fo= 1,15 × 2954,5 + 2 × 81,47 = 3560,5 .