|
Топ
Тсм
Топга
Тга
=
(3)
where Т
оп га
- operational time for processing 1 ha/hour:
Т
см
– changeover time, hour;
Т
оп
– operative changeover time, hour.
Time Т
оп га
is determined as:
Т
оп га
= Т
р га
+ Т
пов га
+ Т
пер га
+ Т
то га
(4)
Here Т
р
, Т
пов
, Т
пер
– accordingly, the elements of
the time spent on processing 1 ha of operational time,
turnover time, movement time and maintenance. The
operational changeover time is determined as:
Т
роп
= Т
см
– (Т
то
+ Т
физ
) (5)
where Т
то
, Т
физ
- time during the changeover spent on
maintenance and physiological needs, which are not di-
rectly dependent on the area being processed. [4, 5]
After substituting in equation (1) the values coming
from equation (2) and (3), we obtain:
см
опга
m
оп
Т
Т
W
Т
=
By replacing the incoming values with their values
from equations (4) and (5) we have:
(
)
(
)
см
перга
повга
рга
m
физ
то
см
Т
Т
Т
Т
W
Т
Т
Т
+
+
+
−
=
(6)
In the obtained equation, the time Т
р га
is determined
by equation (2). And time of turns Т
пов
га
per one ha can
be expressed by the time of one turn t
noв
, grasp width B
and length of working stroke L by the following depend-
ence:
га
час
,
36
.
0
пов
L
B
t
Т
пов
=
In this case the equation (6) has the following form:
(
)
см
перга
m
m
физ
то
см
Т
Т
L
B
tnoв
w
W
Т
Т
Т
+
+
+
−
=
36
.
0
1
After the conversion, the resulting equation will
slightly change:
( )
+
+
−
−
=
пер
пов
физ
то
T
B
L
t
V
К
K
1
.
0
6
.
3
1
1
(7)
where
см
физ
физ
см
то
то
Т
Т
К
Т
Т
К
=
=
;
- coefficients tak-
ing into account the time spent on maintenance and
physiological needs during changeover [3].
Т
то
and Т
физ
– proportional durations of the change-
over.
V - progressive working speed of the planning unit,
km/h;
t
noв
- duration of one turn, sec;
L, В- length of working stroke and grasp width, m;
Т
перга
- travel time per one ha, sec.
The analysis of works /6/ shows that along with the
main parameters of the long-base planner, the volume of
work performed during the season (year) can affect the
effectiveness of its use. Aggregates with a large grasp
width at a small annual load can be less economically
efficient relative to units with a smaller grasp width.
Thereby, the selection of economically optimal parameters
of a long-base planner requires a comprehensive approach,
which will be considered in the subsequent part of this
section.
№ 5 (86)
май, 2021 г.
49
References:
1. Norov S.N., Abrorov A.S., Hamroeva M.F., Muxamedjanova S.F., & Zaripov G.B. (2020). Research of the screw
working element working jointly with the planner’s bucket. Journal of Physics: Conference Series, 1515(4).
https://doi.org/10.1088/1742-6596/1515/4/042016
2. Khasanov I.S. et al. “Theoretical preconditions for determining some parameters of the screw working jointly with
the planner bucket”. Journal “Agrarian science”, Moscow, 2015
3. Norov S.N., Hamraeva M.F. Analytical research of determining the maximum efficiency of planning machines. In-
ternational Journal of Advanced Research in Science, Engineering and Technology Vol. 6, Issue 6, June 2019 361-
362 p.
4. Norov S.N «Research and development of a machine system for complex mechanization of precultival treatment of
agricultural conditions in the bukhara region» Монография “Lambert Akademic Publishing” Germaniya 2019. ISBN
978-620-0-22740-9
5. Vasiliev B.A. et al. “Land reclamation machines”. Moscow, “Kolos”, 1980
6. Khikmatov P.G. “Research of qualitative and technological performance indicators of the long-base planner in order
to substantiate the optimal grasp width and movement speed”. Abstract for the candidate of technical sciences. Tash-
kent, 1978.
№ 5 (86)
май, 2021 г.
__________________________
Bibliographic description: To’raxonov M.I., Abduraxmonov J., Yadgarov S.N. The impact of climatic cond itions on
the occurrence of wheel track deformation on asphalt pavement roads // Universum: технические науки : электрон.
научн. журн. 2021. 5(86). URL: https://7universum.com/ru/tech/archive/item/11811
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