BELARUS-
1523/1523В
/1523.3
/1523В.3
Aggregating the Tractor
209
Approximate calculation of the plough
operating width:
•
Assess the type of the soil to be tilled.
•
Find its specific resistance in Table 7-
23.
•
Calculate an approximate operating
width for an ordinary shear plough by
the formula given below.
В=30/(а•Р), где
В
– plough operating width, m;
а
– ploughing depth, m;
Р
– unit ploughing resistance, kN/m
2
.
Type of soil
Preceding cul-
tural practices
Ploughing resistance for soils P, kN/m
2
, at the tractor
speed v * = 5 km/h,
Soil texture
heavy clay-
loam
medium
light clay-
loam
sandy loam,
peat-boggy
Chernozem
soil
Winter-crop
stubble field
68
49
35
25
Perenneal
grass sod
86
57
45
31
Virgin soil, old
sod field
90
71
52
39
Soddy-
podzolic soil
Winter-crop
stubble field
66
47
34
26
Perenneal
grass sod
74
56
43
30
Virgin soil, old
sod field
92
71
50
40
Chestnut soil
Winter-crop
stubble field
69
47
36
22
Virgin soil, old
sod field
98
58
55
29
* Change in speed by 1 km/h changes the ploughing resistance by up to 1%.
Содержание 1523
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