Volume 04 Issue 06-2024
71
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
06
Pages:
71-75
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
In this article, the shearing resistance of the arrowroot, which is one of the main parameters for harvesting mung bean
crops grown on irrigated land, was studied.
KEYWORDS
Mung bean, arrow root, cutting, soil, depth, pendulum device, power.
INTRODUCTION
In recent years, the concept of food security has been
repeatedly recalled worldwide, therefore, attention
has been paid to quick-ripening, drought-resistant
crops in the agriculture of our Republic. The most
common of these is the leguminous mung bean plant,
which is mainly grown as a repeat crop in the place of
grain crops. According to the estimate of 2023,
300,000 hectares of land freed from grain were
planted with mung bean. Mung bean is a leguminous
crop with high nutritional value. Digestibility of the
contained protein reaches 86%. Mung bean grain
contains protein 24-28%, lysine 8%, arginine 7%.
Buckwheat grain is 1.5-2 times higher than wheat and
rye grains in terms of nutritional value, and 1.5 times
higher in nutritional value.
RESEARCH AND RESULTS
The cutting resistance of the arrow root of mung bean
crop was determined using a pendulum cutting device.
Pendulum cutting device consists of a bottom vertical
column and horizontal axes.
In order to determine the force of cutting the root of
the mung bean plant, an indicator scale and an arrow
Research Article
DETERMINING THE CUTTING RESISTANCE OF MUNG BEAN ROOT
Submission Date:
June 20, 2024,
Accepted Date:
June 25, 2024,
Published Date:
June 30, 2024
Crossref doi:
https://doi.org/10.37547/ajast/Volume04Issue06-14
Astanakulov Komil
Doctor Of Technical Sciences, Professor «Tashkent Institute Of Irrigation And Agricultural Mechanization
Engineers» National Research University, 100000 Tashkent, Uzbekistan
Turdibekov Ilkhomjon
Doctoral Student, «Tashkent Institute Of Irrigation And Agricultural Mechanization Engineers» National
Research University, 100000 Tashkent, Uzbekistan
Journal
Website:
https://theusajournals.
com/index.php/ajast
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 04 Issue 06-2024
72
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
06
Pages:
71-75
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
are installed around the rotation axis of the device, and
a cutting blade is attached to the side of the
connecting rod. The needle is additionally equipped
with holders holding the root of the arrow in the way
of its vibration circle.
The pendulum consists of a connecting rod, a sector,
an arrow and blades. Clamps and reverse shear plates
were placed to fix the test specimen of the mung bean
arrowroot. Experiments were carried out by setting
the cutting (setting) angle of the knife to γ = 15°, 30°,
45°, 60° and 75° using the sector.
The other dimensions of the blade are unchanged, its
cutting edge thickness is 0.8 mm, the sharpening angle
is 15º, and the distance between the blade and the
reverse cutting plates is set to 1-1.5 mm. In this case, the
thickness of mung bean arrow roots was 4-5 mm on
average. After determining that the acceptable cutting
angle is 40°, experiments were conducted with
arrowroots of different thicknesses at this cutting
angle.
Before carrying out the experiments, the weight of the
pendulum was selected using bolts and nuts of the
lower head of the connecting rod, which were used as
an additional load, so that the pendulum would rise to
70º-90° when the pendulum was only moving, and in
the working state, it would rise to 25º-35° after cutting
the root. has been achieved. The mass of the pendulum
was weighed vertically on a technical scale with an
accuracy of 5 g. The center of gravity of the pendulum
was determined by determining its equal weight on the
knife blade in a horizontal position. The distance from
the cutting center to the center of gravity was
measured using a ruler with an accuracy of 1 mm. After
the pendulum was installed in place, it was checked for
vibration errors. For this, the pendulum was tried to
move 10 times. The angle at which the pendulum
should rise should be close to its angle of free
movement. The average difference did not exceed 2
percent in the experiments of salt movement.
The cutting quality of mung bean crop was evaluated
by its complete and comparative work and cutting
force. The complete work of cutting the root of a mung
bean crop was determined by the following
expression:
(
)
2
1
cos
cos
−
=
B
r
Q
А
(1)
here
–
the mass of the pendulum;
B
r
–
radius of the center of gravity;
1
–
working angle of the pendulum;
2
–
angle of vertical rise of the pendulum.
The comparative work of mung bean arrow root
cutting was determined by the following expression:
к
sol
S
А
А
=
;
4
к
к
d
S
=
, (2)
here
к
S
–
cutting surface;
к
d
–
root thickness
The shear strength of the arrow root was determined
by the following expression:
S
А
Р
kes
=
(3)
here S
–
the distance of movement of the knife blade
in the working condition, m;
In working condition, the blade travel distance (S) is
how far the blade is raised after cutting the root of the
arrowroot.
Volume 04 Issue 06-2024
73
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
06
Pages:
71-75
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
cos
к
d
S
=
(4)
here γ –
cutting (installation) angle of the blade,
degrees;
The cutting (setting) angle of the knife blade was fixed
by setting the position of the knife in the pendulum at
different angles. Based on the results of the
experiment, it was found that the relative work of
cutting the mung bean arrow root changes depending
on the cutting angle (Fig. 1).
This graph has the appearance of a parabola, and by
analyzing it, the following conclusion can be drawn:
when the knife blade is installed at an angle of 15°, the
specific work was 5.7 kJ/m2. When the cutting angle
changed from 15° to 30°, the specific work decreased by
1.2 kJ/m2 to 4.5 kJ/ m2, and the average value of the
specific work in cutting was 0.08 kJ/ m2 per 1° cutting
angle. found to be correct. When the cutting angle was
increased from 30° to 45°, the relative work in cutting
did not change much. As the cutting angle increases
from 45°, it was found that the specific work in cutting
increases slowly at first and then sharply.
Fig 1. Dependence of the comparative work in cutting the mung bean arrow root on the cutting angle
When the cutting angle was set to 60°, the specific
work in cutting was 5.5 kJ/m2, and when the cutting
angle was 75°, the specific work in cutting was 7.3 kJ/
m2. When the cutting angle varies from 45° to 60°, it
was determined that the specific work of cutting
corresponds to 0.06 kJ/ m2 for every 1° cutting angle.
When the shear angle varied from 60° to 75°, the
equivalent work in shear was 0.053 kJ/ m2 per 1°.
There is a relationship between the shearing strength
of the mosh shoot root and its thickness, and the
empirical equation that expresses the dependence of
the shear strength of the mosh shoot root at 60.1
percent moisture is as follows: was determined to be:
Р
k
=
–
0,0458
d
il
2
+ 4,744
d
il
+ 2,9071 (5)
Volume 04 Issue 06-2024
74
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
06
Pages:
71-75
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
The empirical equation that expresses the dependence
of the shear strength of the mung bean arrowroot at
76.2 percent moisture on its thickness is found to be as
follows:
P
k
=
–
0,5326 d
il
2 + 9,5784 d
il
–
10,836, (6)
here P
k
–
shear strength, N;
Table 1 shows the values of the cutting strength of the
mung bean arrow root. Analyzing the graph showing
the dependence of the arrow root cutting force on its
thickness, it is possible to draw the following
conclusion: when the root moisture content is 60.1
percent and its thickness is 1.9 mm, its cutting force is
13 N did When the root thickness increased by 2 times,
the cutting force also increased by approximately 2
times and was 20.5 N. Then, the increase in root
thickness by 1.3 times resulted in an increase in cutting
force by 34.7 N.
1-table
Cutting forces of mung bean roots
Indicators
Root moisture, %
60,1
76,2
М
o’r
, N
24,1
21,8
±σ
, N
0,919
0,917
V
, %
3,81
4,20
The cutting force was directly proportional to the root
thickness and was found to vary from 13 N to 34.7 N.
Keeping the above relationship, the shearing strength
of the mung bean arrow root at 76.2% moisture content
is directly proportional to the root thickness, and its
graph is shifted lower than at 60.1% moisture content.
CONCLUSIONS
From this it can be concluded: the higher the moisture
content of the mosh root, the smaller the effort
required to cut it. Comparing the values of the average
cutting and breaking forces, it was determined that the
breaking force of the mung bean root is 2.5 times
greater than the cutting force of the root at this
moisture level.
REFERENCES
1.
K. D. Astanakulov, Kh. M. Babaev, Kh. M.
Eshankulov and I. M. Turdibekov Development
of technology and equipment for harvesting
mung bean crops. IOP Conf. Series: Earth and
Environmental Science, 1112 (2022) 012008
2.
Koychiev O.R., Soatov A., Orazaliev F.
Grounding of the optimal parameters of the
peanut digging claw // Collection of scientific
papers of the II Republican scientific and
technical conference on the topic of problems
of applying innovative ideas, technologies and
projects to production. - Jizzakh, 2010. p. 107-
108.
3.
B.M. Khalikov, S.T. Negmatova “Mung bean”
monograph, Tashkent. "Navroz" publishing
house, 2020, 188 pages.
4.
Rasulov A.D. Basing the parameters and
operating modes of the primary cleaning
Volume 04 Issue 06-2024
75
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
06
Pages:
71-75
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
machine for mung bean grain: Techn.
Dissertation of the Doctor of Philosophy. -
Yangiyol: AMSRI, 2020. - 126 p.
5.
K.D. Astanakulov, I.M. Turdibekov, Technology
of mung bean harvest. Republican Scientific
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www.fao.com
