Volume 04 Issue 08-2024
43
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
08
Pages:
43-47
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
we implement "aerodynamic forces in increasing spindle activity" in the program "Compass-3D". the topic presents
the methodology and results of the graphoanalytical study of the rotating finger kinematics of the multi-finger
mechanism belonging to the multi-contour finger mechanism of the vertical spindle drum of the cotton harvester.
KEYWORDS
Crank-fingered (CF), "Compass- grafo", forces. cotton harvester (CH), The mechanism of the introduction of cotton
stalk (MICT), Uzbek machine testing station (UzMTS).
INTRODUCTION
I.A.In the development of the Department of TashSTU
“ground vehicles and their system” named after
Karimov, the XNP -1.8 a-type experimental cotton
harvester equipped with a The mechanism of the
introduction of cotton stalk has been confirmed to
have high indicators of test speed and period
completeness in many cotton farms. This cotton
harvester was reported in the first state test evidence
at the Uzbek machine testing station (UzMTS) during
the 1992 harvest season to have a clearly higher rate of
production at 1.5 times greater than an experimental
cotton harvester serialized machine at 1st period
increase of -7.7...12.0% in period of harvest
completeness, and a 6.1% higher rate than an
experimental machine at period two times.
Importance of the problem: The mechanism of the
introduction of cotton stalk inserts the cotton stalks
into the cotton harvester and separates the cotton
from the burs and sends it through the air suction
channels to the bunker. The mechanism of the
introduction of cotton stalk feeds the cotton stalks
into the CH through the finger to the separator. In that
process, the length, speed, and acceleration of the
finger itself affect the quality of work.
Research Article
AERODYNAMIC FORCES IN INCREASING SPINDLE ACTIVITY
Submission Date:
August 20, 2024,
Accepted Date:
August 25, 2024,
Published Date:
August 30, 2024
Crossref doi:
https://doi.org/10.37547/ajast/Volume04Issue08-07
Sadriddinov A.S
Tashkent State Technical University, Uzbekistan
Tangirov I.U
Tashkent State Technical University, 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 08-2024
44
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
08
Pages:
43-47
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
The aerotechnical indicators of cotton harvester
largely depend on the operating conditions of the
spindles. The mechanism of the introduction of cotton
stalk is to increase the useful coefficient of work that
is, there should be enough time left to catch the fibers
with a spindle tooth and separate the cotton from the
bur. [2-6]
However, when picking cotton on cotton harvester,
basically the spindle requires high-speed rotations. As
a result of this, it breaks up and seriously damages
cotton stalk. This event is explained by the peculiarities
of the construction of the cotton harvester and the
location of the opened cotton(figure 1). The burs are
located close to the main stem (Figure 1 A) or along the
axis of the row (B), they are in the maximum near zone
of the spindles of adjacent pairs of drums, that is, in the
working camera begins to be picked. In a similar
working camera, the intensity of further picking
increases when picking, since the working slit between
the spindles of adjacent drums (the width of the
working part) is as small as possible, and the force
required to cover the cotton stalk increases sharply,
which allows you to achieve a enough time when
picking cotton from the bur.
Table 1
pointer names
quantity of pointers
controllable
mechanism
test mechanism
ϕ
=35°
ϕ
=45°
ϕ
=55°
1
2
3
4
5
Machine-picked cotton
average statistics of the raw
material bunker %,
mean quadratic deviation %,
reliability limit 5%.
85,78
86,32
87,66
86,28
2,25
2,08
2,4
2,14
83,57
88,01
83,45
89,25
84,22
91,1
84,59
88,07
Cotton stalk medium
statistics %,
variation coefficient %,
reliability limit 5%,
7,80
6,40
6,34
7,00
9,46
16,37
15,11
12,97
6,97
8,63
5,64
7,16
6,59
7,41
5,04
7,64
Volume 04 Issue 08-2024
45
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
08
Pages:
43-47
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
Figure 1. spindle drums working slit
We build a plan of forces for the 12 position of the
mechanism parts (with a step of 30 degrees),
determine the kinematic parameters of the
characteristic points of the mechanism fingers in a
single position.
We took the scale coefficient of linear dimensions to be
µl = 1 so that the subsequent calculation work is easy,
which simplifies the calculation work when drawing up
a plan of forces and accelerations and determining the
parameters of the characteristic points of the
mechanism fingers. We take the number of drum
rotations n1 = 105 cy/min. We determine the angular
velocity of the drum from the following equation.
ω
1
=
𝜋∙𝑛
30
=
3,14∙105
30
=10,99 c
-1
(1)
The mechanism input is determined by the rate of point A1 from the following formula:
Volume 04 Issue 08-2024
46
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
08
Pages:
43-47
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
V
A
1
=
OA
1
∙
1
=0,146∙10,99=1,6045 m/s (2)
In order for the results obtained in the study to be easy to analyze, we build a godograph of forces
Figure 2. the force godograph of MICT working finger characteristic points (E,B,M)
CONCLUSION
Due to the accuracy and ease of control of the methods
of grapho-analytical and graphic research, when
analyzing aerodynamic forces in increasing spindle
activity in conducting such research, it is important to
quickly check the correctness of analytical calculations,
visually indicate the characteristics of the mechanisms,
and the results of their research showed that the
quality of the skin increased by 2.4%, and the damage
degree of cotton steams after picking decreased by 5-
6%.
REFERENCES
1.
Khabibulla
Turanov,
Anvar
Abdazimov,
Mukhaya Shaumarova, Shukhrat Siddikov,
Type analysis of a multiloop coulisse
mechanism of a cotton harvester, /
International Scientific Conference Energy
Management of Municipal Facilities and
Volume 04 Issue 08-2024
47
American Journal Of Applied Science And Technology
(ISSN
–
2771-2745)
VOLUME
04
ISSUE
08
Pages:
43-47
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
Sustainab-le Energy Technologies EMMFT 2019
Volume 1, 290 -
306 рs
2.
Abdazimov A.D., Sadriddinov A.S., Tulaev A.R.
Phase discrete modeling of the processes of
cotton picking machines with controllable and
uncontrollable mechanism of the cotton stalk.
180ps. Tashkent A. Navoiy
3.
Sh.T.Ravutov Problems of increasing the
efficiency of vertical spindle cotton picking
machine. Tashkent.
–
2019.-
№4.–
b. 51-55
4.
Alimova, F., Saidova, M., Primqulov, B., &
Erdem, T. (2024). Optimization of the
parameters of the pneumatic feed mechanism
for precise clustered sowing. In BIO Web of
Conferences (Vol. 85, p. 01026). EDP Sciences.
5.
Saidova, M. T. (2023). OPTIMIZATION OF THE
PARAMETERS OF THE PNEUMATIC PLANTING
APPARATUS
FOR
PLANTING
COTTON.
American Journal of Applied Science and
Technology, 3(12), 56-66.
6.
Alimova, F. A., Saidova, M. T., & Yuldashev, O.
F. (2018). TO THE ISSUE FOR RESEARCH AND
SUBSTANTIATION THE PARAMETERS OF THE
PNEUMATIC SOWING APPARATUS FOR EXACT
SOWING SEEDS OF PEANUT. In International
Scientific and Practical Conference World
science (Vol. 2, No. 5, pp. 54-58). ROST.
