Results of experimental researches of determination
of corn stems rolling speed in different places of
corn- harvester rolls have been shown. Opportunity
of corn-harvester work under speed of 12-15 km/h
and increased frequency of rolls rotation was analyzed.
Available corn-harvester working regime with regard of intensification of harvesting process was chosen in the result of theoretical and experimental researches.
The article analyzes the state of the dairy industry at the present stage. The efficiency of using concen-trates of melons in the production of multicom-ponent dairy dessert has been proved. The positive influence of concentrates tested on the structural and mechanical properties of jelly dessert, organoleptic and nutritional value of the product has been shown. We have also revealed the reduction in the concentration of the gelling agent in jelly
The analysis of information security tools and systems is carried out in this article. This analysis revealed that the functioning of many of them associated with the implementation of intensive logical calculations. Ways of representing Boolean functions are analyzed, the criteria of efficiency and ways to increase productivity tools and security systems are presented
Based on the analysis of domestic and foreign scientific and patent literature, possible options to reduce weight of electro technical steel in magnetic circuits of electrical machines are explored. A search for the best options for the manufacture of magnetic induction motors stators technology aimed at improving the utilization of electrical steel and improving the energy performance of electric machines is carried out. All the variants are described and illustrated in detail in the drawings. It is pointed out the advantages and disadvantages of each method of manufacturing magnetic wires and the reasons why certain suggestions of technology of manufacturing magnetic circuits have not been implemented in mass production. The main indicators characterizing the manufacturability of constructive decisions are recommended. Economic indicators have been put in the basis of the choice of the optimal variant while designing the electrical machine. An optimal variant should be considered the variant in which all the technical requirements at lowest total cost are met. The latter should be understood not only the cost of materials and machine manufacturers, but also the cost of operation. The dependence of the energy performance of motors with modular designs of stators from the manufacturing technology is pointed out. The existing technology of the most mass electric motors series production, the following disadvantages are typical: low coefficient of utilization of electro technical steel; high specific material capacity, the cost of technology and labor intensity of production; low labour productivity and level of automation of technological process. Due to the fact that the possibilities of increasing of the machines’ specific weight characteristics due to the usage of new magnetic and dielectric materials are exhausted, it is advisable to change the technology of electric motors production, moving away from the traditional design
The article presents native and foreign bench-top
and board methods to test the automobile break
systems. One can find information about some
native trailer-break stands. We have analyzed their
advantages and drawbacks such as low information
capacity, high diagnostics processing time, low
quality of regulation and maintenance operations
due to big influence of the operator’s experience,
his knowledge and individual characteristics, and
great instability of manual test modes on the results
of the investigations. To remove these shortcomings
they have had some experiments at MADI in order
to develop the module to the brake qualities stand.
When using it one can have automatic diagnoses
and flow chart is presented in the article. Due to the
existing vehicles’ state inspection mode and
diagnostic means in our country there appeared new
stands for brakes control. One can attribute to these
devices a range of brake qualities stands developed
and produced at Novgorod plant GARO. These are
STS-3, STS-10 and STO series stands for cars,
trucks, buses and micro-buses. The article also
presents some foreign stands used in Russia such as
universal brake stands STM by META firm, the
break stand IW7 Eurosystem by MAHARUSSIA
firm. We have presented in the article the results of
the analysis of simple and complicated board means
of diagnosis as “Eftor-2”, “Effect”
In agriculture the issue of enhancing the
efficiency of operation of internal combustion
engines (ICE), reducing the costs of
maintenance (TO) and repairing (TP) fuel
supply apparatus (TA) using the improvement
of methods and means of diagnosis is a topical
in connection with the aging rolling stock
farming and lack of investment. Analysis of the
known TA diesel engine vehicles systems
showed that the most widespread system is the
divided type with multiplunger high pressure
fuel pump (fuel pump), while the methods of its
diagnosing are laborious, they require partial
disassembly and have insufficient accuracy.
The mathematical models that characterize the
work of a high-pressure fuel pump (fuel pump)
use a large number of parameters that
significantly affect the quality of dynamics of
the change of pressure values of diesel fuel.
However, in the materials of previously
published articles there were no issues
considered assessing the extent of the
quantitative impact, performance and features
change in the sensitivity settings of the
mathematical models on the simulation results,
there are no recommendations on the degree of
sensitivity and importance of each of the
parameters. For a more accurate diagnosis of
the fuel supply apparatus of a diesel engine it is
advisable to use several methods of diagnosing.
The article substantiates development of a
mathematical model of a high-pressure fuel
pump based on the analysis of modern methods
of diagnosing of fuel equipment for autotractor
diesel engines
When sowing grain we apply resource saving technologies-technologies such as «no till» and a technology called «mini-till». «No till» involves planting crops on untreated surfaces. "Mini-till" is designed for the planting with minimum tillage. During the movement of the sowing unit on these agricultural backgrounds we can see working bodies tipping out. Stabilization of the drilling depth is ensured in two ways - by moving part of the weight of the planter on the opener or the installation of ballast weights. Openers of grain drills for resource saving technologies for grain crops can be divided into three groups – foot, disc and anchor. Disc coulter has varieties – single disc, double disc and montesquiu coulter. To analyze the cost of power for the operation of the opener, the following indicators – the minimum engine power of the tractor on the coulter and engine power of tractors per unit of working width. The calculation of the indicators was conducted using data the technical specifications of the planter. Snow coulter drill AGRATOR4800 provides a wide spread planting strip of 10-15cm. The minimum power of the engine of the tractor on the opener is 7.5 HP minimum power of tractor engine per unit of working width 25 HP/m. Double disc opener planter Great Plains has a minimum engine power of the tractor on the opener 2.7 HP and per unit of working width 26.0-28.44 HP/m. Planter equipped with disc knife for strip tillage. The planter Condor 1201 is provided with a chisel opener «ConTeC». The engine power of the tractor on the opener of the planter is 4.58 HP, the engine power of the tractor unit working width constitute l8.33 HP/m. This grain seeder has reduced power losses and provides sowing with a «no till» technology
The article deals with a set of basic patterns of technical analysis and reviews their recognition techniques using neural network methods. The existing approaches to the problem have been set. The reasons of relevance of the described technique have been
shown
Тhe physical processes, arising on a face at interaction of a chisel with rocks are considered. The mathemati-cal description of model of mechanical speed of drill-ing in a function from speed of rotation, twisting mo-ment, diameter of a chisel and properties of destroyed rocks is executed
The development of agricultural production inevitably
entails an increasing volume of traffic and a turnover of
goods. Therefore, the issues of increasing transport
efficiency, reducing the price of transportations and
improving productivity acquire great importance.
In most cases, supersize dump trucks used for the
transport of agricultural production have much more than 6 tons axle load. Thus, these cars need to have
roads with improved surface to each field, which
undoubtedly is a significant drawback. Because of the
extra movements of harvester dump trucks on the
turning strip at the end of the field, it increases expenses
of damage and loss of crops and the arrival of heavy
machinery in the field leading to soil compaction, that
in the end affects the future crop. Transportation of
agricultural commodities is most effective when the car
arrives directly to the harvester machinery. Such
vehicles must have sufficient abilities and capacity of
the body comparable with the volume of a combine
hopper and has no significant impact on soil sealing.
With this method, harvesters do not make extra
movements and are not idle. Basic requirements for
vehicles used in the harvesting potatoes, are in a more
productive use due to increasing the capacity and
reducing downtime when loading or unloading and
minimizing the level of damage to other tubers. For the
transportation of agricultural products there is a
different transport technology, which either do not fully
meets the requirements of transportation of highly
fragile product, or has a significant cost. Therefore, we
require a specially equipped vehicle bodies, with a
competitive ability in the range acceptable to the
Russian Federation. As one of the innovative
developments, this article proposes a tipper body of the
vehicle for transportation of highly fragile agricultural
products. The proposed design solution for the tipper
ensures a uniform unloading of transported products
from the vehicle body and prevents arching issues