Evaluation of the reliability of self-propelled vehicles using a generalized indicator

Author(s):  
M. N. Kostomakhin

Material according to reliability of agricultural machinery and its main indicators which are characterized by measurement of resource parameters of technical condition of details and interfaces is presented in article. The possibility of an assessment of a resource of car/system or the unit is considered, at technical service of cars by means of the generalized coefficient characterizing their current technical condition.

Author(s):  
A. N. Voronov ◽  
M. N. Kostomakhin

Material according to reliability of agricultural machinery and its main indicators which are characterized by measurement of resource parameters of technical condition of details and interfaces is presented in article. The possibility of an assessment of a resource of car/system or the unit is considered, at technical service of cars by means of the generalized coefficient characterizing their current technical condition


2020 ◽  
Vol 4 (141) ◽  
pp. 40-46
Author(s):  
ZOYA MISHINA ◽  

Timely conducting of all types of maintenance and routine repairs is possible only in the conditions of an innovative service center, equipped with the necessary equipment and having a complex of facilities to ensure favorable conditions for technical service. (Research purpose) The research purpose is in identifying opportunities for updating the technical service system in the agro-industrial complex by creating innovative service centers to ensure highly efficient operation of agricultural machinery and equipment. (Materials and methods) The system of maintenance in agriculture is characterized by a significant decrease in efficiency due to physical and moral wear of equipment of repair and technical enterprises, low level and insufficient qualification of personnel and managers of enterprises of the agro-industrial complex. The availability of existing enterprises of the agro-industrial complex with production areas is no more than 50 percent, technological equipment is no more than 47 percent, and technological equipment and equipment for jobs are 15 and 40 percent. (Results and discussion) The modernization of the infrastructure of technical service of agricultural machinery is aimed at updating the technological base of machine repair. Repair and technical enterprises do not have the necessary equipment to perform a number of maintenance and routine repairs. The process of developing technical service infrastructure is significantly behind the level of structural and technological complexity of agricultural machinery. Due to technological requirements, complex components and assemblies, such as engines, hydraulic equipment, fuel pumps of domestic and imported agricultural machinery should not be repaired in the conditions of farms. (Conclusions) The high technological level of innovative technical service centers serves as a condition for efficient operation of production, ensuring its stability and reliability of operation, flexibility and adaptability, high intensity and waste-free operation.


Author(s):  
Aleksey S. Dorokhov ◽  
Aleksandr V. Denisov ◽  
Aleksey A. Solomashkin ◽  
Valeriy S. Gerasimov

Modern machines are subject to progressive wear that occurs at different rates, which leads to unpredictable failures that reduce the reliability and durability of machines. The strategy of maintenance and repair is aimed at eliminating these problems. (Research purpose) The research purpose is in analyzing the basic principles of the strategy of maintenance and repair of agricultural machinery in order to ensure control of the technical condition of machine parts. (Materials and methods) When resource diagnostics is used, , the allowable value of the parameter is set in advance for a part . This value is the tolerance that corresponds to a certain wear rate of the part. The tolerance is set based on the condition that if the current value of the controlled resource parameter during the next diagnosis is less than the set value, then such a part at the current value of the wear rate can be finalized until the next inter-control check. Taking into account the wear rate of the same type of parts from the group when determining the allowable wear during their resource diagnostics becomes an urgent task. (Results and discussions) As a result of research, the article presents "Methodology for determining the main indicators of reliability of parts of agricultural machines with different wear rates" and "Methodology for determining the tolerance system of parts of agricultural machines with different wear rates". (Conclusions) The article presents the tolerance system that reduces the probability of failure of machine parts in operation. During resource diagnostics, those parts whose resource parameters exceed the tolerance are rejected.


Author(s):  
Z. N. Mishina

To ensure highly efficient operation of agricultural machinery and equipment, it is necessary to improve the system of technical services in agriculture by creating specialized service centers. The system of maintenance in agriculture is characterized by a significant decrease in efficiency due to critical physical and moral wear of equipment of repair and technical enterprises (RTP), low level and insufficient qualification of Executive personnel and managers of enterprises of the agro-industrial complex (AIC). These changes led to the loss of the majority of RTP for agriculture and their re-equipment for non-agricultural production. According to experts, in the service sectors of agriculture, there was a loss of technological production and a significant part of applied science. This is especially worrisome due to the catastrophic aging of cars and the lack of funds to replace them. It is necessary to improve the General condition of the equipment of repair shops, the availability of existing agricultural enterprises with production areas is no more than 50%, technological equipment — no more than 47%, and technological equipment and equipment of workplaces — 15% — 40%, respectively. The priority areas of modernization of the infrastructure of technical service of agricultural machinery are related to updating the technological base of machine repair. Based on a reliable assessment and analysis of the technological level of RTP, which takes into account a number of technological, technical, organizational and environmental factors of production. RTP does not have the necessary equipment and devices to perform a number of maintenance and maintenance operations. The process of developing the technical service infrastructure lags far behind the level of structural and technological complexity of agricultural machinery. Due to technological requirements, such complex components and assemblies as engines, hydraulic equipment, fuel pumps of domestic and imported agricultural machinery should not be repaired in the conditions of farms. In a number of works proved the following provision: evaluation of the technological level repair enterprises shall be based on the application of such methods and means of technological preparation of production, which correspond to the advanced achievements of science and technology, and provide high-capacity system maintenance to continuous improvement. A high technological level of technical service enterprises is a condition for efficient operation of any type of production, ensuring its stability and reliability of operation, flexibility and adaptability, high intensity and waste-free operation.


Author(s):  
A. A. Solomashkin ◽  
M. N. Kostomakhin

Two basic functions of the machine, consumer and technical are given. Application the law of conservation of energy is shown in case of the description of an energy balance of an element of the machine. The expanded concept of technical condition in relation to the machine is this, parameters of technical condition are justified. Communications of technical condition with operability and working capacity and also communication of operability of an element of the machine with its efficiency are defined. The possibility of representation of technical condition in the form of сlass in object-oriented programming is revealed.


Author(s):  
I. E. Parfenyeva ◽  
O. F. Vyacheslavova ◽  
V. V. Matrosova

The article analyzes the data on the management of the technical condition of agricultural machinery objects, presents basic information on warranty service of products of public joint stock company “Promtractor”, provides diagrams showing the procedure for work from the date of delivery of products to the buyer until the end of the warranty period for products.


Author(s):  
V. I. Ignatov ◽  
V. S. Gerasimov ◽  
N. О. Bogatova ◽  
Z. N. Mishina ◽  
М. S. Mordasova

The necessity of formation of resource-saving ekologiurad-based utilization system of agricultural machinery in agriculture was confirmed by studies conducted in the center FNAC VIM in 2013-2018 years during this period, information was collected about the structure of the charged parts of agricultural machinery (agricultural machinery) going to maintenance of the enterprise with the purpose of recycling. Qualified specialists of repair enterprises were involved in determining the status of parts of the utilized equipment, normative documentation and necessary equipment were used. Terms of operation were determined from the date of purchase until the receipt of the machine to the repair company. The obtained data were subjected to statistical processing in order to determine the effect of the terms of service on the technical condition of these items and determining the number of parts of different groups (in percentage) included in the utilized agricultural machinery, as well as one of the main factors for deciding the feasibility of recycling equipment. The aim of work is justification of alternative ecological oriented intelligent system “Selkhozretsikling” formation for realization of a new strategy of resources use connected with their reuse. The averaged dependences of the change in the coefficient of technical readiness for tractors and combines on their service life are determined. Making an informed decision about the appropriateness of further use the machine (repair or disposal), which is close (or reached) to the limit state depends on the accuracy and timeliness of receiving information about the level of loss of its fitness after a certain service life or operating time. As analysis showed in most farms (52%) the preparation of the components of wastes derived of operation technics allows to use their potential on secondary market. Theoretical works and legislative documents make it possible to carry out the necessary practical measures for the formation of a system for utilization of agricultural equipment.


Author(s):  
M. N. Kostomakhin

In article there is a description of the device which allows to transfer data (analog and digital signals) to the PC, through USB port, for processing and information collection about technical condition of the machine during its operation. The obtained diagnostic data are processed on a certain algorithm for calculation of the quantitative local indices of reliability of the machine, a detail or a node.


Author(s):  
V. I. Ignatov ◽  
V. S. Gerasimov ◽  
D. V. Andreeva

According to forecasts for 2022, the number of self-propelled agricultural equipment that will fail will be about 100 thousand units. This will have a fairly noticeable effect on overall agricultural productivity. The paper analyzes the main technological aspects of the possibility of creating a unit (section) for the utilization of agricultural machinery, taking into account the standards of a typical enterprise for technical service. The presented recommendations enable specialized enterprises engaged in the disposal of equipment to quickly carry out work on the creation of a unit (section) for recycling machines, which will make it possible to maximize the production of secondary resources from recycled waste of agricultural machines.


Author(s):  
M. N. Kostomakhin ◽  
A. N. Voronov

In article there is a description of a method of calculation of the generalized indicator of reliability of the self-propelled farm vehicle (SSHM). This technique serves as the main tool at the choice of resource parameters which are used in system of online monitoring of technical reliability with ispolzovapniy satellite navigation (GLONASS, GPS) and/or the Internet network, at technical service of farm vehicles.


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