INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
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page 1875
DEVELOPING CREATIVE ABILITIES THROUGH INDEPENDENT SOLVING
PROBLEMS IN CALCULATION AND GRAPHIC WORK ON CALCULATION OF
CHAIN TRANSMISSIONS IN TECHNICAL MECHANICS
Mustapakulov Sadik Ungiboyevich
Karshi State Technical University, Senior teacher, Uzbekistan
Abstract:
This article aims to improve students' skills in solving problems in the computational
and graphical work on calculating chain transmissions from the machine details section of the
discipline "Technical Mechanics".
Keywords:
Technical mechanics, driving, driven, sprockets, transmission, shaft, loading,
research, chain, speeds, gear, bushing, roller, center distance.
Introduction.
Technical mechanics is an applied science that occupies a leading position
in the development of science and technology. In the machine details section of technical
mechanics, each theoretical law and concept has its own theoretical basis and proof. Solving
problems in computational and graphical work on calculating chain transmissions from the
machine parts section is one of the means of acquiring a system of scientific knowledge and
concepts.
In the process of solving problems in the computational and graphical work on
calculating chain transmissions in the subject of "Technical Mechanics", students develop their
creative abilities by applying their theoretical knowledge about chain transmissions to solving
practical problems.
Main part.
A chain drive consists of two gears (sprockets) attached to two parallel shafts,
the leading and driven, which are interconnected by an endless chain worn on these sprockets.
Figure 1
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Chains are bushing, roller, and sprocket. Both the roller chain and the sprockets are evenly
spaced. At high speeds, it is better to use a sprocket chain. The distance traveled by the chain
during one revolution of the sprocket is , then the speed of the chain is
1000
2
1000
2
2
2
1
1
p
w
p
w
tz
tz
V
=
=
,
(1)
here:
t
- chain step
2
1
;
z
z
- the number of teeth of the driving and driven sprockets.
2
1
;
w
w
- angular velocity of the leading and trailing stars.
Number of rotations
8
;
1
2
2
1
=
=
i
z
z
i
w
w
(2)
Distance between axles А=(30…50)t
(3)
Chain length
A
t
z
z
z
z
t
A
L
t
2
1
2
2
1
2
2
2
-
+
+
+
=
p
Once the chain pitch is selected, the distance between the axles is found as follows.
+
-
+
-
+
+
-
=
2
1
2
2
2
1
2
1
2
8
2
2
4
p
z
z
z
z
L
z
z
L
t
А
t
t
(4)
Forces acting on chain links.
Rotational force
1
2
¶
=
d
М
Р
(5)
here: - the diameter of the star division.
The force generated when tensioning a chain.
KfqA
S
=
0
(6)
Here:
q
is the weight of the chain,
К
f
is the chain's sag coefficient.
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Stress due to centrifugal force.
2
v
g
q
S
v
=
(7)
where: g=9.81: v-chain speed.
The issue.
Power
kk
P
5
,
4
1
=
, rotation frequency
1
1
min
750
-
=
n
, number of transmissions
Consider a roller chain transmission with u=5. The load acting on the transmission remains
unchanged. The chain is periodically lubricated and tensioned.
Solution to the problem.
1. Number of teeth of the leading sprockets:
19
5
2
29
2
29
1
=
-
=
-
=
u
z
2. Number of teeth of the driven sprocket:
95
5
19
1
2
=
=
=
u
z
z
3. The actual value of the transmission number:
84
,
4
19
95
1
2
=
=
=
z
z
u
4.Timing chain pitch
[ ]
3
1
1
8
,
2
mm
z
p
K
T
t
e
=
in this
m
N
3
,
57
750
5
,
4
9550
/
9550
1
1
1
=
=
=
n
P
T
,
875
,1
1
5
,1
25
,1
1
1
1
6
5
4
3
2
1
=
=
=
K
K
K
K
K
K
K
e
Speed of the transmission chain
s
m
/
4
=
J
, permissible pressure value Let's take
[ ]
MPa
p
18
=
and calculate the pitch of the transmission chain
3
3
04
,
19
19
18
875
,1
10
3
,
57
8
,
2
mm
t
=
=
5. Transmission chain speed
s
m
t
n
z
/
524
,
4
10
60
05
,
19
750
19
3
1
1
=
=
=
J
6. Actual value of pressure in the joints of the transmission chain
MPa
t
z
K
T
P
e
995
,
17
)
05
,
19
(
19
875
,1
10
53
)
8
,
2
(
)
8
,
2
(
3
3
3
3
1
1
3
=
=
=
,
So
[ ]
MPa
P
P
18
995
,
17
=
<
=
7. Geometric dimensions of the transmission
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a) wheelbase
mm
t
a
762
05
,
19
40
40
=
=
=
b) the number of links in the chain
40
,
/
5
,
0
2
2
=
D
+
+
=
t
t
um
t
t
a
a
z
a
L
114
95
19
2
1
=
+
=
+
=
z
z
z
um
,
1,
12
14
,
3
2
19
95
2
)
(
1
2
=
-
=
-
=
D
p
z
z
66
,
138
40
)
1,
12
(
110
5
,
0
40
2
/
5
,
0
2
2
2
=
+
+
=
D
+
+
=
t
um
t
t
a
z
a
L
Chain length
m
mm
t
L
L
t
641
,
2
5
,
2641
05
,
19
66
,
138
=
=
=
=
8. Frequency of impact of chain links on sprocket teeth
t
L
n
z
508
60
/
4
1
1
=
w
,
1
85
,
6
66
,
138
60
750
19
4
-
=
=
s
w
,
1
6
,
26
05
,
19
508
508
-
=
=
s
t
Safety factor for strength of the transmission chain
;
f
m
t
t
uz
F
F
K
F
F
S
+
+
=
kN
F
uz
8
,
31
=
N
a
m
gK
F
m
F
f
f
m
2
,
14
762
,
0
9
,1
1
81
,
9
,
89
,
38
)
524
,
4
(
9
,1
2
2
=
=
=
=
=
=
u
,
mm
t
z
d
b
27
,
115
14
,
3
05
,
19
19
1
1
=
=
=
p
,
7
,
32
2
,
14
89
,
38
1
6
,
919
10
8
,
31
3
=
+
+
=
+
+
=
f
m
t
t
uz
F
F
K
F
F
S
N
d
T
F
b
t
6
,
919
27
,
115
10
3
,
57
2
2
0
1
1
=
=
=
,
[ ]
8
,
10
=
S
,
[ ]
S
S
>
, 32,7 >10,8
Variant
number
Given
0
1
2
3
4
5
6
7
8
9
Power on the
driving pulley
P
1
(kW)
2,5
3
3,5
4
4,5
5
5,5
6
7
7,5
Rotation
frequency
720
750
850
600
700
800
550
570
500
730
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n
1
(min
-1
)
Speed
)
/
(
1
s
m
J
4,5
4,2
5
3,8
4,3
3,5
4,2
4,1
4
5
Permissible
pressure value
[ ]
)
(
MPa
p
20
21 24
22
23
22,5 23,5 24
22
23,5
Note: The student determines the option by taking the last number in the journal. For
example, if the journal has 4 digits, the student takes the quantities given in 4 options, and if it
has 24 digits, the student takes the quantities given in 4 options, performs the calculation and
graphic work and submits it to the teacher conducting the practical exercise.
Conclusion.
Solving problems in the computational and graphical work on calculating
chain transmissions in the subject "Technical Mechanics" increases students' general mental
development, logical thinking and reasoning skills, and further increases their interest in
studying the machine details section in more depth.
List of used literature:
1. Shamanov G.Z. va boshqalar. Amaliy mexanika fanidan kurs loyiha va hisob chizma ishlari
uchun topshiriqlar va ularni bajarish bo;yicha uslubiy ko’rsatma. T.o’q. 2005 y
2. Tojiboev R.N. va boshqalar. Mashina detallari kursidan masalalar toplami.T.Oq.1992 y
3. Ungiboyevich M. S. Modeling Of The General Sciences Teaching System In
Higher
Education Institutions On The Basis Of Interdisciplinary Integration //Intersections of Faith
and Culture: American Journal of Religious and Cultural Studies (2993-2599). 2023. Т. 1.
– №. 9. – С. 76-79.
4. Ungiboyevich M. S. Oliy ta’lim muassasalarida ta’lim integratsiyasining nazariy asosi
sifatida
tizimli
yondashuv
asosida
talabalarning
kasbiy
kompetentligini
rivojlantirish//Barqaror Taraqqiyot va Rivojlanish Tamoyillari. – 2023. – Т. 1. – №. 3. – С.
82-86.
5. Ungiboyevich M. S. Modeling Of The General Sciences Teaching System In Higher
Education Institutions On The Basis Of Interdisciplinary Integration //Intersections of Faith
and Culture: American Journal of Religious and Cultural Studies (2993-2599). – 2023. – Т.
1. – №. 9. – С. 76-79.
6. Ungiboyevich, Mustapakulov Sadik, and Boymuratov Farrukh Khamzayevich.
"Development of Professional Competence of Students on the Basis of a Systematic
Approach as the Theoretical Basis of Educational Integration in Higher Education
Institutions." American Journal of Engineering, Mechanics and Architecture (2993-
2637) 1.10 (2023): 295-298.
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 03,2025
Journal:
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page 1880
7. Ungiboyevich, Mustapaqulov Sodiq. "Texnik mexanika fanini o’qitish jarayonida interfaol
uslublarni qo’llash." Journal of new century innovations 19.7 (2022): 11-14.
8.
Nazarov, A., Sharipov, S., Yusupov, R., Mustapaqulov, S., & Jamanqulov, X. (2020).
Methods for conducting a course project on machine parts. European Journal of Molecular
and Clinical Medicine, 7(6), 1546-1549.
9.
Fayzullayev, K., Irgashev, D., Mustapakulov, S., & Begimkulova, M. (2021). Raking plates
of the combination machine's subsoiler. In E3S Web of Conferences.
