Volume 04 Issue 10-2024
21
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
10
Pages:
21-27
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
In this article, the influence of the relative vertical pressure force applied to the roller of the combined plowing
machine on plowed land on its performance was determined based on theoretical and experimental experiments, and
the results were determined.
KEYWORDS
Combined, aggregate, leveler, rolling, moisture, density, fraction, pressure, force, experimental.
INTRODUCTION
Currently, pre-planting of plowed fields for planting
repeat and winter cereals is carried out with a variety
of separate aggregates, which leads to longer planting
periods, loss of soil moisture and increased operating
costs. It is possible to eliminate the shortcomings of
plowed land by using machines that combine all the
technological processes of preparing the soil for
planting in one pass, including a machine equipped
with a roller.
of the lands perform some or all of the technological
processes performed in the pre-planting treatment in
one pass of the field. This leads to the reduction of the
negative impact of tractors and agricultural machines
Research Article
OF COMPARATIVE VERTICAL PRESSURE FORCE ON ITS PERFORMANCE
INDICATIONS
Submission Date:
October 08, 2024,
Accepted Date:
October 13, 2024,
Published Date:
October 18, 2024
Crossref doi:
https://doi.org/10.37547/ajahi/Volume04Issue10-05
Mamarasulova Manirakhan Tursunboyevna
PhD, docent, Andijan village farm and agtotechnologies institute, Andijan the city, Uzbekistan
Makhmudov Rafiqdjon Yusupovich
PhD, docent, Andijan Institute of Agriculture and Agrotechnologies, Pakhtabad district, Uzbekistan
Journal
Website:
https://theusajournals.
com/index.php/ajahi
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 04 Issue 10-2024
22
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
10
Pages:
21-27
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
on the soil, the reduction of fuel consumption, the
increase of work quality and productivity, the
reduction of the period of tillage, and the preservation
of moisture accumulated in it. Combined aggregates
and machines that combine the technologies of basic
and pre-planting treatment to the soil are now widely
used in developed countries with a high agricultural
culture and allow to get a high yield of agricultural
crops with low labor and investment.
Currently, in foreign countries, various options of
combined units have been created to prepare the soil
for planting, and various disc rollers and levelers are
used as working parts of soil cultivation.
Pre-tillage machines perform some or all of the tillage
processes in one pass through the field. This leads to
the negative impact of tractors and agricultural
machines on the soil, as well as a decrease in fuel
consumption, an increase in the quality and
productivity of work, a reduction in the duration of soil
cultivation, and the preservation of moisture
accumulated in it [1;2].
This paper presents theoretical and experimental
results of vertical loading applied to a roller for
application in a combination machine.
The vertical load applied to the roller was determined
from the condition that it is submerged to a specified
depth and was generally expressed as follows (Fig. 1)
1
2
,
Q
N
N
=
+
(1)
where
N
1
is the requirement for immersing the roller
plates into the soil
vertical load to be achieved, N;
N
2
- the requirement to sink the foundations of the
roller into the ground vertical loading, N.
Volume 04 Issue 10-2024
23
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
10
Pages:
21-27
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
Figure 1. Scheme for determining the vertical load applied to the coil
We determine the vertical load required to sink the
planks of the roller into the soil for one plank
completely immersed in it, and it is equal to
1
,
п
N
b B
=
(2)
where
s
is the relative resistance of the soil to vertical
crushing, Pa.
s
in the expression (1) by the volume compression
coefficient of the soil, the speed of movement and the
depth of immersion of the roller into the soil [6]
(
)
2
0
0
1
,
v u
q
K V
h
=
+
(3)
where
q
0
is the volume compression coefficient of the
soil, N/m
3
;
К
v
–
proportionality coefficient,
s
2
/m
2
.
Q
O
N
b
n
h
о
Volume 04 Issue 10-2024
24
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
10
Pages:
21-27
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
Taking (3) into account, expression (2) is written as
follows
(
)
2
1
0
0
1
.
v
u
п
N
q
K V
h b B
=
+
(4)
We can express the vertical load required to sink the
foundation of the roller into the soil as follows
2
1
,
A
a
B
N
N
l
=
+
( 5)
where
N
A
is the requirement for submerging one base
of the roller into the soil
vertical loading, N.
N
A
according to the following expression [3; 7]
(
)
(
)
(
)(
) (
)
2
2
0
0
0
0
1
2
A
v
u
a
п
a
п
a
п
a
п
a
N
q
K V
h b
R
h
h
R
h
h
h
h
h
h
h
h
=
+
− +
− +
− +
−
− +
−
(
)
(
)(
) (
)
2
0
0
0
2
arcsin
.
п
a
п
a
п
a
a
п
a
R
h
h
h
h
h
h
h
h
R
h
h
R
h
h
− +
− +
−
− +
−
− +
− +
(6)
Taking this into account, the expression (2.40) takes
the following form
(
)
(
)
(
)(
) (
)
2
2
2
0
0
0
1
2
v
u
a
п
a
п
a
п
a
п
a
N
q
K V
b
R
h
h
R
h
h
h
h
h
h
h
h
=
+
− +
− +
− +
−
− +
−
(
)
(
)(
) (
)
2
0
0
0
2
arcsin
1 .
п
a
п
a
п
a
a
п
a
a
R
h
h
h
h
h
h
h
h
B
R
h
h
R
h
h
l
− +
− +
−
− +
−
− +
+
− +
( 7)
N
1
and
N
2
according to the expressions (4) and (7) into
the expression (3.36), the following expression is
derived to determine the vertical load applied to the
coil
(
)
(
)
(
)(
) (
)
2
2
0
0
0
0
1
2
v u
п
a
п
a
п
a
п
a
п
a
Q
Bq
K V
h b
b R h
h
R h
h
h
h
h
h
h
h
=
+
+
− +
− +
− +
−
− +
−
Volume 04 Issue 10-2024
25
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
10
Pages:
21-27
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
(
)
(
)(
) (
)
2
0
0
0
2
arcsin
1
.
п
a
п
a
п
a
a
п
a
a
R
h
h
h
h
h
h
h
h
B
R
h
h
R
h
h
l
− +
− +
−
− +
−
− +
+
− +
(8)
both sides of this expression by
V
, we determine the
specific vertical load per unit span of the coil.
(
)
(
)
(
)(
) (
)
2
2
0
0
0
0
1
2
c
v u
п
a
п
a
п
a
п
a
п
a
Q
q
K V
h b
b R h
h
R h
h
h
h
h
h
h
h
=
+
+
− +
− +
− +
−
− +
−
(
)
(
)(
) (
)
2
0
0
0
2
arcsin
,
п
a
п
a
п
a
a
a
п
a
R
h
h
h
h
h
h
h
h
R
h
h
n
R
h
h
−
+
−
+
−
−
+
−
− +
−
+
(8,
a
)
where
a
a
a
B l
n
Bl
+
=
-
the
number
of
bases
corresponding to the coverage width of 1 m of the coil,
units/m.
d
k
=0.1 m,
h
0
=0.05 m,
φ
1
=30°,
φ
2
=40°,
b
n
=0.01
m,
q
01
=2·10
6
H/m
3
, [4 , 5]
K
v
=0.01 c
2
/ m
2
,
b
a
=0.006
m,
h
p
=0.04 m,
h
m
=0.02 m,
h
a
=0.02 m,
l
a
=0, 25 m,
n
a
=4 units/m and
V
u
=1.75-2.25 m/s are accepted, and the
calculations made according to the expressions mean
that the diameter of the coil is at least 36 cm, the
number of plates to be installed on it is 12 pieces, their
length is 27 cm, the coil showed that the angle between
the teeth is 90°, the step of the teeth of the planks is 4
cm, the diameter of the roller base is 30 cm, the vertical
load applied to each meter of coverage should be in
the range of 1.04-1.06 kN/m [8,9]
In the experiments, based on theoretical studies, the
specific vertical load applied to the roller was changed
from 500 N/m to 1100 N/m at intervals of 200 N/m, and
the effect of these changes on its performance was
studied. 10 pieces, the angle of installation of the
planks relative to the axis of rotation of the roller was
15 ° .
The results of the experiments are presented in Figure
2. It can be seen from them that with the increase of
the specific vertical pressure force applied to the roller,
the degree of crushing of the soil, that is, the amount
of fractions with a size smaller than 25 mm in it,
increased. This is due to the fact that with the increase
of the vertical pressure force applied to the roller, the
degree of soil crushing of the roller plates increases,
and as a result, the soil is well compacted.
Due to the above reason, the specific vertical load
applied to the roller from 500 N/m to 1100 N/m
increases its specific drag resistance from 203 N/m to
Volume 04 Issue 10-2024
26
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
10
Pages:
21-27
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
286 N/m and from 235 N/m at speeds of 6 and 8 km/h,
respectively. up to 309 N/m, and caused the soil density
to increase from 1.08 g/cm
3 to
1.22 g/cm
3
and from 1.06
g/cm
3 to
1.2 g/cm
3
, respectively [10]
The relationships shown in Figure 2 can be expressed
by the following empirical formulas determined by the
method of least squares:
a
) according to the level of soil fertility (%):
V
=6 km/h,
F
<25
= -8.75
Q
2
+23.3
Q
+70.748, (
р
2
=0.9528) (9)
When
V
=8 km/h
F
<25
=-12.5
Q
2
+28
Q
+68.225; (
r
2
=0.9857) (10)
b
) by soil density (g/cm
3
):
r when V
=6 km/h =-0.4375
Q
2
+0.925
Q
+0.72938, (
р
2
=0.98911) (11)
V
= 8 km/h; when
r
= -0.4375
Q
2
+0.925
Q
+0.70938; (
р
2
=0.98911) (12)
c
) according to the specific resistance of the coil to the
pull (N/m):
V
= 6 km/h,
R
= -175
Q
2
+4015
Q
+78.95, (
р
2
=0.9969)
(13)
R
=-100
Q
2
+308
Q +71.1 when V
=8 km/h . (
r
2
=0.9635)
(14)
Based on the experimental researches, we can
conclude that the compaction quality and density of
the soil meet the agrotechnical requirements, and to
ensure that the relative resistance of the gear-plate
roller is minimal, the vertical pressure force applied to
it should be in the range of 700-900 N/m.
According to the technical and economic calculations,
the use of a row tillage machine on plowed lands
equipped with a toothed plate roller reduces labor
costs by 34.4% and costs per hectare of cultivated area
by 38% [8; 9]
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Volume 04 Issue 10-2024
27
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
10
Pages:
21-27
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
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