FROM ACTIVE SHARE TO CUTTING APPARATUS

2017 ◽  
Vol 12 (2) ◽  
pp. 88-92
Author(s):  
Александр Мудров ◽  
Aleksandr Mudrov

The subject of the article relates to agricultural machinery, namely, to the working units of root harvesting machines and to cutting device of harvesting machines. In both the first and second designs, work is performed in an abrasive medium, which reduces their service life and increases energy costs. The devices are proposed, in which the work is carried out in the absence of abrasive friction in the working parts. The novelty of devices is marked by patents for invention. The effect is achieved by the special arrangement of the geometric axes of the joints of the links, which are designed on needle roller bearings, by the simplicity of structures, by reduction of energy costs for the drive of the working units, by reliability and durability.

2019 ◽  
Vol 2 (2) ◽  
pp. 10
Author(s):  
Falahun Ni'am

                                                  AbstractDictionaries, a book that includes the largest number of vocabulary combined with explaining and interpreting their meaning, to be material arranged a special arrangement: either the letters of the alphabet, or on the subject. It is called a dictionary because the nouns remove the confusion and clarify the vagueness. The complete of dictionary, which includes every word in accompanied by explaining its mean and its derivation and the method of its pronunciation and evidence showing its language positions used.Lexicology is the part of linguistics that interest with the study of words, its nature and its mean, the elements of words, the relations between words (semantic relationships), the sets of words and the study of each lexicon of a language. The linguists divided the stages of language collection into several stages, each stage different from one another, everything will be discussed in this article.Keyword: Significance, Lexicon, Stages


2020 ◽  
Vol 175 ◽  
pp. 13007
Author(s):  
Arthur Alukhanyan ◽  
Olga Panfilova

The article deals with the issues of renovation (renewal) of the agricultural machinery and tractor fleet by developing models for developing an optimal strategy for its technical re-equipment. The optimal service life of machines in operation is considered as the most important prerequisite for the scientific management of such an update. The main criterion for the optimal strategy is the effectiveness of replacing a particular machine with a new one. The relevance of solving this problem is determined by the urgent need to plan the pace of technical re-equipment of the MTF, taking into account the presence of various economic restrictions.


2018 ◽  
Vol 244 ◽  
pp. 01002
Author(s):  
Petr Hrabě ◽  
Viktor Kolář ◽  
Abraham Kabutey ◽  
Aleš Sedláček

Intensive abrasive wear occurs in soil-treatment machines. This article is focused on increasing the service life of ploughs by the welding material. The welding material is applied at a 45° angle to the tool. This material is abrasive wear resistant. The welding material was applied parallel to the head of ploughshares with spacing of 60 mm. Carbide materials were used (SK 258 TiC-O, SK 900-O, SK A43-O, SK 299- O, SK A45-O, OK TUBRODUR 15.82, SK 258 TiC-O). The tested ploughshare variants were wearing the same when were used the welding material and the standard.


1966 ◽  
Vol 12 ◽  
pp. 503-519

Thomas Wallace was the eighth child of a family of nine, three sons and six daughters. His father, also Thomas, was a blacksmith and agricultural engineer carrying on a family business at Newton-on-the-Moor, near Alnwick. From the beginning of the nineteenth century the Wallace smithy had served the needs of the local farming community, shoeing their horses and mending their simple agricultural machinery. Two of Thomas Wallace’s sons showed the family bent for engineering, but the third, who bore his father’s name and who is the subject of this memoir, had, as he often said himself, no skill in engineering nor any liking for the work; his interests were in scholarship, catholic at first, but soon to be canalized in the study of pure science. Thomas Wallace senior had married Mary Thompson, also of a Northumberland country family. Before their eighth child was born on 5 September 1891 he moved to Burradon, where he expanded his business by undertaking work for the collieries. Thomas junior’s childhood was spent in his native village, where although the country was still pleasant and highly farmed, mining activities had already begun to bring about those changes which later were to take away so much of its beauty. Wallace as a boy was attracted to the farms and he spent many happy days on them, playing and watching the men at work. As he grew older he began to share in the work of haymaking and harvest. It is to this country background that can be attributed the ease with which he later became absorbed in the agricultural community he served.


2020 ◽  
Vol 11 (3) ◽  
pp. 173-179
Author(s):  
O. V. Voynalovich ◽  
◽  
S. M. Holopura ◽  

It is shown that in order to justify the extension of the service life of the machine beyond the resource set by the developers, it is necessary to focus on the allowable risks of accidents that can lead to accidents. After all, today for mobile agricultural machinery, the operation of which is associated with high-risk work, the concept of acceptable (acceptable) risk is not used, which does not allow to assess the danger of being on fields, farms and roads without machinery, with exhaustion of installed resources. The purpose of researches is to justify the permissible risk of exploitation of mobile agricultural machinery, in array of details and elements of constructions which have accumulated defects (damage). This paper analyzes the kinetics of accumulation of operational defects in the array of parts of individual components (systems) of tractors. MTZ-80 tractors (82) were chosen as the object of research, as one of the most common in Ukraine. To detect cracks, a developed eddy current flaw detector was used, the sensitivity of which allowed to find cracks several millimeters or larger in length without preparing the surface of the controlled parts. It is shown that the kinetic dependences of the accumulation of operational defects in the parts of tractor units in the analyzed range of service life are monotonically increasing, which can be described by exponential functions with a sufficiently high reliability. It is noted that the obtained dependences are similar to the kinetic dependences of the accumulation of static and dynamic (fatigue) damage obtained as a result of laboratory tests of samples of construction materials, which allows to use approaches to the criteria of the limit state of laboratory samples due to the power load to establish the boundary life of mobile agricultural machinery. However, the kinetics of the intensity of the occurrence of operational cracks in the array of tractor parts is not monotonous and has a maximum in the range of about 11-13 years of operation. This service life can be used as a criterion to stop the operation of the tractor, to carry out defectoscopy of parts and to replace defective parts. With such a long service life of the tractor, there is the greatest probability of sudden destruction of the tractor components and the creation of emergencies.


2017 ◽  
Vol 4 (1) ◽  
pp. 141-145
Author(s):  
Idalberto Macías Socarrás ◽  
Benjamín Gaskin Espinosa ◽  
Antonio Barrera Amat ◽  
Lenni Ramírez Flores ◽  
Mercedes Arzube Mayorga

El presente trabajo recoge, de forma resumida, una propuesta de metodología para el cálculo de los principales parámetros del sistema de limpieza de las cosechadoras de cereales; la misma para su mejor comprensión se divide en tres partes fundamentales: parámetros del sacudidor de paja, parámetros de la superficie de limpieza o tamiz y parámetros principales del ventilador. La fundamentación teórica de esta metodología, ayudará a una mejor comprensión del funcionamiento de este importante sistema para estudiantes y especialistas del tema. Consecuentemente,  constituye una herramienta de trabajo para los estudiantes de las carreras de las ciencias técnicas agropecuarias, para solución de tareas relacionadas con la mecanización agropecuaria y teoría de máquinas agrícolas. AbstractThe present paper summarizes a proposal for a methodology for the calculation of the main parameters of the cleaning system of grain harvesters; the same for its better understanding is divided in three fundamental parts: parameters of the straw shaker, parameters of the cleaning surface or sieve and main parameters of the fan. The theoretical basis of this methodology will help a better understanding of the functioning of this important system for students and specialists in the subject. On the other hand, it is a working tool for the students of agricultural sciences, to solve tasks related to agricultural mechanization and agricultural machinery theory.  


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.


2020 ◽  
Vol 71 (4) ◽  
pp. 92-99
Author(s):  
R.R. MIRZAEV ◽  
◽  
B.B. SIDOROV ◽  
A.V. TERENTIEV ◽  
D.A. PTITSYN ◽  
...  

The choice of the most effective option for using the machine and tractor fleet in relation to specific operating conditions, considering the real volumes and the existing age structure of the park, is a complex optimization problem, in which value of the rational service life of the equip-ment and the necessity for a differentiated assessment of its consumer properties in three main groups are important: an ability of agricultural machinery to follow the technological require-ments determined by working conditions; productivity and efficiency of equipment; properties that ensure the safety and comfort of the driver. The solution to the problem is to develop a model that allows for the scientifically grounded size of the current renewal of agricultural machinery, adapted to modern operating conditions.


1971 ◽  
Vol 17 ◽  
pp. 139-158

Edward Foyle Collingwood was born on 17 January 1900 at Lilburn Tower, near Wooler, Northumberland, and died suddenly of a heart attack at Lilburn Tower on 25 October 1970. He came of a very old Northumberland family whose roots go back before 1600 and branches of it spread all over the country, but what is of much greater significance from the scientific point of view is that he was descended from John, the third brother of Admiral Lord Collingwood of Caldbourne and Hethpool, the two older brothers dying without issue. John’s only son, Edward John, bought Lilburn Tower in 1842 from the trustees of H. J. W. Collingwood of Cornhill, and was succeeded one after another by his three sons, Edward John, a bachelor who died in 1903, Arthur Burdett who died without issue in 1927, and Colonel Cuthbert George who had lived at Glanton Pyke and moved to Lilburn Tower in 1928. He immediately handed over the Lilburn Estates to his eldest son, Edward Foyle, the subject of this notice, who was in fact only three generations removed from the Admiral. Edward Foyle Collingwood’s mother Dorothy, still living at the time of writing, is the daughter of the Rev. William Fawcett of Somerford Keynes, Gloucestershire, and the name Foyle recalls her grandmother who was coheiress with her sister of the Somerford Keynes estate, and his mother was always a strong influence in the family. Three other sons were born in quick succession so that they formed a close-knit family and were able to do together all the usual country sports and pastimes of boys and did them well, especially shooting and fishing. Edward went to Osborne in 1913, Dartmouth in 1914, and a year later joined the Navy as a midshipman in H.M.S. Collingwood (by special arrangement). Two of his brothers survive him, Group Captain C. J. Collingwood who followed him through Osborne and Dartmouth just one year behind, and the youngest, Lieutenant-General Sir George Collingwood.


2018 ◽  
Vol 8 (3) ◽  
pp. 36
Author(s):  
Fatma Fusun Uysal ◽  
Emel Demir Askeroglu ◽  
Bilge Berkhan Kastaci

Sustainable development is a process of change that involves institutional restructuring related with directing investments, positioning technological development and meeting the future needs as much as today’s needs. The application of environmental social responsibility studies is useful for any size of textile company. A primary concern for textile companies is the amount of water used in their processes. They generate large volumes of solid and hazardous wastes. Energy is the motor behind textile processes. Energy costs used in processes are important for especially large textile companies. While institutions are producing with social responsibility awareness, fulfilling their obligations to environment has gained importance in terms of sustainable development. The subject of this work introduces activities carried out by textile companies during production process, fulfilling their environmental responsibilities or not and which applications are done in the sector. Following the literature survey, a questionnaire study was conducted on textile firms operating in Turkey. From our research, it is concluded that some emerging technologies like enzymatic treatment in textile wet processing, ultrasonic treatment, electron-beam treatment, use of supercritical carbon dioxide in dyeing, electrochemical dyeing, ink-jet printing, plasma technology in textile wet processing are not used by any of companies.


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