February Volume 1, No-1

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Q1
and reviews
reviews
Q1 technology
technology news and
Q1 technology news and reviews
Volume 1, No. 1, February 2024
Chief editor
S. G. Ahmed
Professor of Computational Mathematics and Numerical Analysis Faculty
ofEngineering, Zagazig University, Zagazig, Egypt, P. O. Box 44519

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February Volume 1, No-1

CHIEF EDITOR
S.G. Ahmed
Professor of Computational Mathematics and Numerical Analysis Faculty
ofEngineering, Zagazig University, Zagazig, Egypt, P. O. Box 44519

EDITORIAL BOARD
Yu Li
Wuhan University of
Technology,China
Seung Man Yu
Seoul National University of Science
andTechnology, South Korea
Seyed Saeid Rahimian Koloor
Universiti Teknologi Malaysia,
Malaysia
Eko Susanto
Menegment of journal Indonesia
Siti Mazlina Mustapa Kamal
Universiti Putra Malaysia, Malaysia

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Q1 technology news and reviews
DETERMINATION OF TORQUE AND VIBRATION AMPLITUDE OF
ROLLER MECHANISMS WITH BEARING SUPPORT WITH BELT
CONVEYOR
Juraev Nodirbek Normuradovich
Navoi State University of Mining and Technology
Doctor of Philosophy in Technical Sciences (PhD)
Nodirjura@mail.ru
Jumaev Akbarjon Sayfullaevich
Almalyk branch of Tashkent State Technical University named after Islam
Karimov
Doctor of Philosophy in Technical Sciences (PhD), Associate Professor
akbarjon.jumaev@mail.ru
Beknazarov Jasur Kholmamatovich
Navoi State University of Mining and Technology
Doctor of Philosophy in Technical Sciences (PhD), Associate Professor
j-beknazarov@mail.ru
Abstract. The article presents ideas about the reliability and durability of belt conveyors
in mining enterprises today, as well as the constantly increasing requirements for equipment.
The recommended values are presented through graphs representing the influence of the
change in the vibration amplitude of the belt conveyor roller mechanism on the bearing
flange and the roller mechanism shell, as well as the dependence of the torque on the axis
of the roller mechanism on the change in the belt conveyor performance. As a result, the
analysis of scientific studies about the possibility of increasing the UWK compared to the
traditional one has been presented.
Key words. Conveyor, roller mechanism, belt element, deformation, loading, transportation,
amplitude, vibration, technology.
Introduction
Today, large-scale scientific and research work is being carried out to improve
resource-saving techniques and technologies of mining enterprises and to create their
improved constructions. In this regard, including increasing the efficiency and productivity
of belt conveyors, which are considered the main transport vehicles of mining enterprises,
equi pping their components with resource-efficient structures, increasing their durability,
improving the operational reliability of the equi pment, ensuring the process, developing
and optimizing mathematical models. transportation of minerals using these methods is
gaining importance. At the same time, it is important to develop the construction of
roller mechanisms with a bearing support of a resource-efficient belt conveyor of a new
design, justify its parameters, and reduce energy consumption.
Literature review
In a series of experimental and theoretical researches, it is aimed to calculate the
dynamic loads on the belt conveyor belts that work at high loads in mining enterprises,
i.e., transporting large lumps, as a result, two approaches to eliminate the causes of
dynamic loads have been formed. In the first approach, external shocks are considered
as the main mechanism of impact of large load parts on the rollers due to the fact that
the direction of the particle velocity vector and the tangent do not coincide with the
roller surface at the point where the load vector is laid on the guide roller mechanisms
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February Volume 1, No-1
[1].
In addition to vibration contact repair of bearings installed in belt conveyor roller
mechanisms, abrasive and friction repair types are also characteristic. This type of
surface wear is predominant for the bearing supports of roller mechanisms. These types
of wear determine the technical source of the bearings. The cause of this phenomenon
is considered to be low-quality production of protective covers and sealing elements of
the roller mechanism. However, belt conveyor roller mechanisms are such a mass
product that perhaps the cost savings on protective cover elements justify themselves, so
a type of wear not typical of bearings should be considered [2].
One of the popular studies in the field of determining the resistance to rotation of belt
conveyor roller mechanisms is to determine the type of rotation resistance of roller
mechanisms; to the quality and quantity of lubricants; to the rotation speed of the
rollers; to the radial load on the roller; it was determined that it depends on the air
temperature. After increasing the temperature of the bearing parts of the roller mechanisms,
it was found that the power consumption and resistance to movement decreased. To take
into account the effect of ambient temperature, an average value coefficient was proposed,
the value of which depends on the type of lubrication and rotation speed [3].
Discussion
Based on the study of the structural parameters of the belt conveyor roller mechanisms,
the construction schemes of the belt-supported roller mechanisms were developed (Fig.
1).

1-shell, 2-bearing, 3, 4, 7-labyrinth cover, 5-protective washer, 6-axle, 8bearing shell, 9-belt element bushing, 10-outer ring
Figure 1. Construction of roller mechanism with elastic element bearing support
(Belt conveyor)
During the technological process, roller mechanisms are affected by the following
forces: driving torque, gravity, inertia of unbalanced masses, frictional forces, technological
pressures, etc. The forces forming the resultant force are directed radially and axially.
These forces affect the bearing 2 through the bearing 2 and belt bushings 9 and 10 [4,
5, 6].
In this case, the presence of 9 belt bushings significantly reduces the effect of these
forces on the bearing 2. In addition, due to the radial component of forces, the bending
of axis 9 is significantly reduced. 9- the outer and inner rings of the belt bushing are
made in the form of cones with the diameters of the bases d and d cut, which allows
to extend the impact forces along the axis. The use of supports with belt elements of the
axles reduces the effect of vibrations on the housings of the roller mechanism due to the
vibration of the rotating axle. Therefore, the vibration characteristics of these roller
mechanisms are significantly reduced.
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Q1 technology news and reviews
Loads of roller mechanisms with a bearing support with a recommended belt element
mainly depend on the laws of change of the mass of raw materials transported on the
conveyor belt. It should be noted that the mass of raw materials transported on a belt
conveyor has random patterns in time [7, 8, 9]:
mrm = m1 + m0 sin t ± m0
where m1 – is the average mass of transported raw materials; m0 – is the amplitude of raw material
mass change values; – is the mass change frequency; m0 – is a random generator.
The change in the mass of the raw material affects the bearing flange and main part support
bushing. In this case, its friction force also changes, leading to feeding. In this case, it is important
that the main rubber bushing-shock absorber with a strap element located between the outer flange
of the composite bearing and the inner metal bushings is sufficiently absorbed from the loads.
Therefore, the analysis of the vibrations of the bearing shell and the outer flange attached to it
under the influence of external loading, and the justification of the parameters of the rubber
bushing to reduce them are considered to be one of the main issues [10, 11].
Results
It can be seen from the resulting connection graphs in Figure 2 that when the load increases from
0.26 N to 1.9 N and the mass of the bearing shell is 0.3∙102 kg, the vibration amplitude of the roller
mechanism is increases from 0.4∙10-3 m to 0.250∙10-3 m. If the mass of the bearing shell decreases
to 0.275∙102 kg, the displacement amplitude of the roller mechanism reaches from 0.5∙10-3 m to
0.74∙10-3 m. Therefore, to ensure that the vibration amplitude of the roller mechanism does not
exceed 0.4∙10-3 m, it is advisable to make ms ≤ (0.275÷0.325)ꞏ102 kg and F0 ≤ (1.02÷1.25) N.

Figure 2. Dependence graphs of the influence of the change in the vibration amplitude of
the roller mechanism on the bearing flange and the shell of the roller mechanism
Studies have shown that an increase in the coefficient of uniformity of the bearing belt bushing
not only decreases the vibration amplitude z and ̇ , but also causes an increase in the vibration
frequency of the roller mechanism. When the force increases to 1.8 N, the value of Az decreases
linearly from 0.59 10-3 m to 0.24 10-3 m. Accordingly, the vibration amplitude of the speed of the
roller mechanism also decreases nonlinearly, and the coefficient of uniformity of the belt element
support of the roller mechanism bearing increases (see Fig. 2). The recommended values of the
uniformity coefficient of the bearing belt support are c1 = (5.0 ÷ 5.5)ꞏ104 N/m; c2 = (0.1 ÷ 0.12)ꞏ104
N/m, where the vibration amplitude Az = (0.09 ÷ 0.14)ꞏ10–3 m/s, ̇ = (0.08 ÷ 0.11)ꞏ10–3 m/s it is
guaranteed to be between [12, 13].
Special sensors and the tensometric method were used to experimentally determine the torque
on the shaft of the roller mechanism with a belt bushing, the frequency of rotation and the
amplitude of vibration of the shaft. A special experimental copy of the belt conveyor was prepared
and its parameters were measured based on the electrotensometric scheme. Based on experimental
research, oscillograms and connection graphs were obtained [14, 15, 16].
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February Volume 1, No-1

1-engine; 2, 4-belt element coupling; 3-reducer; 5-leading drum; 6-strip; 7-roller; 8-UZB cable
electronic thermocouple; 9, 14-vibXpert special number changer device (laboratory equipment);
10-computer, 11, 12, 13-strain gauges; 15-lead drum [17]
Figure 3. Electrotensometric scheme of the experimental stand of the guide roller
mechanism with a belt conveyor

Figure 4. Graphs representing the dependence of the torque on the axis of the roller
mechanism on the change in the performance of the belt conveyor
If the torque and vibration amplitude are reduced in the range of (50÷55) Nm when using a strap
support, the torque is reduced by (35÷40)% on average. (Figure 4). The performance increases
from 3.51 102 Nm to 6.23 102 Nm, when using 7B-54MBC rubber, the torque increases from 3.82
102 Nm to 4.1 102 Nm in roller mechanism, these results are, when 7IRP13-46 rubber is used.
increases to 1.22ꞏ102 Nm. This means that in order to reduce the torque in the roller mechanism, it
is possible to use a rubber brand with a small rotational speed for the rubber bushing of the bearing,
in which case it is advisable to choose the 7IRP13-48 brand rubber as the optimal option.

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Q1 technology news and reviews
Conclusion
As a result of the analysis of the operation process of belt conveyor roller mechanisms,
it was found that the bearing support, which is the main working organ of the roller
mechanism, quickly fails during operation, which has a negative effect on the conveyor
technology. Due to the vibration of the roller mechanism, the support bearings quickly
fail. The use of bearing supports with belt elements provides significant absorption of
vibrations in the roller mechanism and increases the service life of the roller mechanism
and bearings.
References:
1.Øàõìåéñòåð Ë.Ã. Òåîðèÿ è ðàñ÷åò ëåíòî÷íûõ êîíâåéåðîâ / Ë.Ã. Øàõìåéñòåð,
Â.Ã. Äìèòðèåâ // Ì.: Ìàøèíîñòðîåíèå, 1978. 392 ñ.
2.Øàÿõìåòîâ Å.ß., Ìåíäåáàåâ Ò.Ì., Òåìèðòàñîâ Î.Ò. Àíàëèç íåèñïðàâíîñòåé
ðîëèêîâ ëåíòî÷íûõ êîíâåéåðîâ â õîäå ýêñïëóàòàöèè íà ïðåäïðèÿòèÿõ âîñòî÷íîãî
êàçàõñòàíà // Âåñòíèê ÑÃÓ. - Ñåìèïàëàòèíñê, 2015. - ¹4(72). - Ñ. 58-63.
3.Ñïðàâî÷íèê òåõíîëîãà -ìàøèíîñòðîèòåëÿ //  2 ò. / ïîä ðåä. À.Ì.Äàëüñêîãî,
À.Ã.Ñóñëîâà, À.Ã.Êàñèëîâîé, Ð.Ê.Ìåùåðÿêîâà. - 5-å èçä., ïåðåðàá. è äîï. - Ì.:
Ìàøèíîñòðîåíèå - 1, 2001. - Ò. 2. - 766 ñ.
4.Jumaev Akbarjon Sayfullaevich, Ashirov Alisher Abdujapparovich, Salimov
G`iyosiddin Ilyosovich. Analysis of the laws of changes of the angular velocities of belt
conveyor drums and the torque of the drive shaft at different technological resistance
values. British View ISSN 2041-3963 Volume 9 Issue 1 2024.https://scholar.google.com
5.A. Djuraev, B.N. Davidbaev, A.S. Jumaev. Improvement of the design of the belt
conveyor and scientific basis for calculation of parameters. Global Book Publishing
Services is an International Monograph & Textbook Publisher. Copyright 24 may 2022
by GBPS. 10.37547/gbps - 03. ISBN 978-1-957653-03-7 1211 Polk St, Orlando, FL
32805, USA. - 151 p.
6.A.D. Djuraev, A.S. Jumaev. Study the influence of parameters of elastic coupling on
the movement nature of support roller and rocker arm crank-beam mechanism //
International Journal of Advanced Research in Science, Engineering and Technology.
Volume 8. No. 9, September 2020.
7.Akbarjon Jumaev, Fevzi Istablaev, Mehriniso Dustova. Development of the theory
of calculation of constructive and rational parameters of belt conveyor roller mechanisms
// Cite as: AIP Conference Proceedings 2467, 060025 (2022). https://pubs.ai p.org/ai p/
acp/article-abstract/2467/1/060025/2826524
8.A. Djuraev, A.S. Jumaev, M.M. Abduraxmanova. Analysis of the results of physical
and mechanical experimental studies of the modernized belt conveyor // Journal of
Physics: Conference Series 2573 (2023) 012012. https://iopscience.iop.org/article/10.1088/
1742-6596/2573/1/012012
9.A. Djuraev, A.S. Jumaev, N.I. Ibragimova, M.Y. Turdaliyeva. Analysis of the dynamics
of a belt conveyor with composite guide rollers and elastic elements // Journal of
Physics: Conference Series 2573 (2023) 012026. https://iopscience.iop.org/article/10.1088/
1742-6596/2573/1/012026
10.A. Djuraev, Sh.S. Khudaykulov, A.S. Jumaev. Development of the Design and
Calculation of Parameters of the Saw Cylinder with an Elastic Bearing Support Jin.
International Journal of Recent Technology and Engineering (IJRTE) ISSN: 22773878, Volume-8 Issue-5, January 2020.
11.Jumaev Akbarjon Sayfullaevich, Juraev Anvar Juraevich, Juraev Nodirbek
Normuradovich, Qayumov Bahodir Babakul o`g`li. Parameters of Choice and
14

February Volume 1, No-1
Calculation of Materials By The Guiding Composite Roller Mechanisms of Tape
Conveyors. International Journal of Engineering and Information Systems (IJEAIS)
ISSN: 2643-640X Vol. 4, Issue 8, August - 2020, Pages: 235-240.
12.Jumaev Akbarjon Sayfullaevich, Djuraev Anvar, Abduraxmanova Muattar
Musurmankulovna. Analysis of the influence of the properties of oil products on the
performance of belt conveyor guide roller mechanisms. Har. Edu.a.sci.rev. 0362-8027
Vol.2. Issue 2 Pages 44-52. 10.5281/zenodo.7181271.
13. A.D. Djuraev, A.S. Jumaev. Study the influence of parameters of elastic coupling
on the movement nature of support roller and rocker arm crank-beam mechanism.
International Journal of Advanced Research in Science, Engineering and Technology.
Vol. 6, Issue 6, June 2019.
14.Jumaev Akbarjon Sayfullaevich, Turdaliyeva Makhliyo Yo'ldoshevna, Ibragimova
Nodira Ilkhomovna. Dynamic analysis of machine assembly of belt conveyor with roller
mechanisms with composite belt elements. British View ISSN 2041-3963 Volume 7
Issue 3 2022 DOI 10.5281/zenodo.7139012 Universal impact factor 8.528 SJIF 2022:
4.629.
15.Jumaev Akbarjon Sayfullaevich, Djuraev Anvar, Pushanov Akbar Nurlan oglu.
Development of models of recression of defatory states of components as a result of
external loads of belt conveyor drums. Har. Edu.a.sci.rev. 0362-8027 Vol.2. Issue 2 Pages
36-43. 10.5281/zenodo.7170607.
16.Jumaev Akbarjon Sayfullaevich, Ibragimova Nodira Ilkhomovna, Turdaliyeva
Makhliyo Yo'ldoshevna. Analysis of vertical and flushing vibration of belt element
bearings of belt conveyor roller mechanisms. Academic leadershi p. ISSN 1533-7812
Vol: 21 Issue 3 http://academicleadershi p.org/ DOI 10.5281/zenodo.7138635.
17.Beknazarov Jasur Kholmamatovich, Jo'rayev Nodirbek Normuradovich.
Determination of gear extension parameters of a composite flexible element. Journal of
northeastern university. Volume 25 Issue 04, 2022 ISSN: 1005-3026 https://dbdxxb.cn/
Original Research Paper.
18.Anvar D. Juraev, Bahtiyordjan N. Davidbayev, Nodirbek N. Juraev, and Jasur Kh.
Beknazarov. Results of dynamic analysis of double-inlet screw conveyor machine assembly.
E3S Web of Conferences 417, 06005 (2023) https://doi.org/10.1051/e3sconf/
202341706005. Geotech-2023.
19. Rashid Muminov, Sherali Yakhshiev, Jamshid Ravshanov, Zayniddin Ori pov,
Nodirbek Juraev, and Mahbuba Maxmudova. Development of technical solutions for
modernization of the rotary feed mechanism of a quarry drilling rig. E3S Web of Conferences
486, 05007 (2024) https://doi.org/10.1051/e3sconf/202448605007 Agritech-IX 2023

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