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UDK 631.3 (575.1)
FACTORS FOR IMPROVING THE TECHNOLOGICAL RELIABILITY OF COTTON
PICKING MACHINES
Rajabboy Ruzmatovich Khudaykuliyev
, Director,
Scientific Research Institute of Agricultural Mechanization
Kupaysinova Khurshidakhon Arabboy kizi
, PhD Candidate,
Institute of Mechanics and Seismic Stability of Structures
named after M.T. Urozboev, Academy of Sciences of the Republic of Uzbekistan
E-mail: kupaysinovahurshidaxon@.gmail.com
Abstract
: This article analyzes the ways to improve the technological reliability of cotton-picking
machines, the main causes of their malfunctions, and the factors ensuring efficiency during
operation. It also presents methods for ensuring uninterrupted machine performance through the
implementation of modern technologies.
Introduction
: Cotton growing is one of the leading sectors of agriculture in Uzbekistan.
Increasing the level of mechanization in cotton production—particularly the efficient operation of
cotton-picking machines—directly affects yield. The reliable performance of these machines
depends on their technological condition and operational conditions.
Main part:
1. Factors affecting the reliability of cotton-picking machines:
The technological reliability of cotton-picking machines is determined by numerous factors. The
most significant of these are analyzed below:
Design solutions
:The machine should incorporate a modular structure with easily replaceable and
repairable components. Any complexity in the construction prolongs maintenance time and
increases the likelihood of malfunctions.
Material quality:
The use of high-quality materials—such as heat- and wear-resistant steel,
alloys, and plastics—in manufacturing enhances reliability. This is particularly important for
components that are in motion and operate under load, where material quality plays a critical role.
Assembly and installation quality:
Accuracy during factory assembly, including adherence to
geometric specifications and tightness of joint connections, directly affects technical reliability.
Even minor errors during assembly can cause malfunctions in the overall system of the machine.
Condition of hydraulic and electrical systems:
Maintaining stable pressure in hydraulic systems
and ensuring the safe and consistent performance of electrical components play a decisive role in
the uninterrupted operation of cotton-picking machines.
Maintenance and operational culture:
Adherence to the maintenance regulations recommended
by the manufacturing company, compliance with lubrication schedules, and timely replacement of
spare parts are all critical factors in ensuring machine reliability.
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Climatic and field conditions:
External factors such as uneven soil surfaces, dust, and moisture
levels directly influence machine systems. Flexible designs that are resistant to climatic conditions
contribute significantly to reliability.
Operator qualification:
The operator’s level of technical knowledge, attentiveness to the
machine, and adherence to operational rules play a vital role in the longevity and efficient
functioning of the cotton-picking machine.
2. Common issues during operation:
The long-term and effective performance of cotton-picking machines largely depends on
operational conditions. The following issues often cause machine malfunctions and reduced
productivity during the harvesting season:
Wear of working components:
Picker drums, separators, and traction wheels operate under
intensive loads. These components frequently experience surface wear, deformation, and
brittleness in alloys. Such wear leads to a decline in harvesting quality.
Lubrication system problems:
Insufficient lubrication in hydraulic and mechanical systems
increases friction, causing moving parts to overheat and fail. This issue often arises due to failure
to clean oil filters in a timely manner.
Failures in electrical systems:
Malfunctions in sensors, control panels, and signaling systems
disrupt the automated functions of the machine. Damage to electrical wiring or loose contacts can
cause interruptions in automatic control operations.
Improper adjustment of picking mechanisms:
To ensure high-quality cotton harvesting, the
picking mechanisms (such as picking drums and separating elements) must be precisely adjusted.
Inaccurate calibration can result in incomplete picking or an increased presence of impurities.
Impact of dust and contaminants:
In field conditions, external elements such as dust, soil
particles, and cotton fibers can infiltrate the machine’s internal mechanisms, slowing down its
operation. This particularly affects air filters and cooling systems, often causing serious damage.
Lack of monitoring and preventive maintenance:
Many operators and service personnel
inspect the machine only after a malfunction has occurred. Minor issues that go undetected in
time can later develop into serious failures.
Shortage of spare parts:
A lack of necessary spare parts delays repairs, leading to interruptions
in the harvesting process. This is especially detrimental during peak harvesting periods, causing
significant economic losses.
3. Ways to improve reliability
Enhancing the reliability of cotton-picking machines ensures their uninterrupted operation during
the harvesting season and enables efficient performance with minimal failures. The following
measures are among the most effective in this regard:
1. Implementation of preventive maintenance:
Carrying out scheduled technical maintenance
on a regular basis is one of the most important factors in ensuring machine reliability. Before each
harvesting season, a full diagnostic inspection should be conducted, with the replacement of worn
or damaged parts and thorough checks of lubricants and filter elements.
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2. Integration of innovative technologies:
The use of automated monitoring systems, remote
control modules, and sensor-based diagnostic tools enables real-time tracking of the technical
condition of cotton-picking machines. This allows for early detection of malfunctions and the
prevention of breakdowns.
3. Structural improvements:
Simplifying machine design, introducing modular structures, and
utilizing quickly replaceable components facilitate easier maintenance. This increases operational
reliability and reduces downtime during repairs.
4. Enhancement of Operator Qualification:
A skilled operator can fully utilize the machine's
capabilities, adhere to operational rules, and detect faults early. Therefore, consistent attention
should be given to both practical training and theoretical knowledge improvement.
5. Development of manufacturer service networks:
Establishing local service centers, spare
parts warehouses, and rapid response technical support teams can significantly improve machine
operability and maintenance efficiency.
6. Adaptation to operating conditions:
Developing machine modifications tailored to local
climate, terrain, and field conditions enhances machine durability. Flexible systems that can
withstand factors such as humidity, dust, slopes, and field obstacles significantly contribute to
overall reliability.
7. Reforms based on statistical analysis:
Consistent analysis of malfunctions, downtime causes,
machine operating hours, and service costs during each harvesting season allows for
improvements in design, technical systems, and service procedures.
4. Application of modern technologies
In recent years, modern digital and automated technologies have been widely applied to increase
the efficiency and reliability of cotton-picking machines. These technologies help monitor every
stage of machine operation, enable early detection of faults during use, and simplify the
maintenance process.
GPS and GNSS technologies:
Global positioning systems enable cotton harvesters to follow
optimal movement trajectories within the fields. This ensures precise harvesting without deviation,
minimizes losses, and reduces fuel consumption.
IoT (Internet of Things) systems:
Key components such as the engine, hydraulic systems, and
drums are equipped with special sensors. These sensors transmit real-time data to a central control
panel, allowing the operator to constantly monitor the machine’s status and receive immediate
alerts in case of malfunctions.
Smart diagnostic modules:
Indicators such as engine pressure, temperature, and electrical
system voltage are automatically analyzed. The machine performs self-diagnostics and issues
warnings to the operator, thereby increasing operational safety.
Automatic adjustment and calibration systems:
In certain modern cotton-picking machines, the
height and rotation speed of pickers and drums are automatically adjusted according to the cotton
density. These features reduce human-related errors and enhance picking quality.
Cloud-based information systems and telemetry:
Machines used in large-scale farming
operations are interconnected via a unified server. Information about each machine’s activity,
INTERNATIONAL MULTIDISCIPLINARY JOURNAL FOR
RESEARCH & DEVELOPMENT
SJIF 2019: 5.222 2020: 5.552 2021: 5.637 2022:5.479 2023:6.563 2024: 7,805
eISSN :2394-6334 https://www.ijmrd.in/index.php/imjrd Volume 12, issue 04 (2025)
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route, and technical condition is remotely monitored. This simplifies management and strengthens
oversight.
Green technologies:
To ensure environmental safety, some advanced models are equipped with
gas or electric engines. These machines are energy-efficient and environmentally friendly.
By implementing modern technologies in practice, the service life of cotton harvesters is extended,
breakdowns are reduced, and the quality of harvesting and productivity are improved.
Conclusion
The enhancement of the technological reliability of cotton harvesting machines is not only
dependent on their structural quality but also on continuous monitoring and servicing during the
operational process. The application of modern technologies extends their operational lifespan
and increases productivity.
REFERENCES
1. Q.X. Karimov – "Reliability of Agricultural Machinery", Tashkent, 2022.
2. Ministry of Agriculture of the Republic of Uzbekistan, Statistical Data, 2023.
3. "Fundamentals of Technological Machinery Operation and Maintenance", Educational Manual,
2021.
