scholarly journals Design and technological aspects of spiked cereal combine stripping

2021 ◽  
Vol 285 ◽  
pp. 07001
Author(s):  
Gennady Maslov ◽  
Elena Yudina ◽  
Denis Ushakov ◽  
Gavriil Samurganov
Keyword(s):  
Technology Implementation ◽  
High Performance ◽  
System Research ◽  
High Increase ◽  
Grain Crushing ◽  
Wheel Drive ◽  
Combine Harvester ◽  
Harvesting Process ◽  
Combine Harvesters ◽  
Unit Performance

The article proposes system research of the spiked cereals harvesting process by a combine stripping, when the stripping header and the grain heap clearing are performed by one harvesting unit based on a self-propelled all-wheel drive combine harvester with a modernized design and technological scheme, in contrast to their aggregation by conventional batch-produced harvesters, which do not provide the harvesting quality according to the agrotechnical requirements. The commonly used aggregation of high-performance stripper headers by series combine harvesters, does not give an effect from the technology of combine stripping due to such violations of agrotechnical requirements as grain crushing for up to 1,9 %, its direct losses off the combine for up to 1,5 %, high kernel micro-damage, etc. With the use of a system approach, the design and technological aspects of spiked cereal combine stripping have been proposed, the use of which will eliminate the disadvantages of the used combine stripping while maintaining the high achievements of this technology in increasing labor productivity by 1,4 ... 2,0 times and saving diesel fuel for up to 45 %. In the principles of improving the technology by combine stripping, proposed by the authors, the requirements for its subsystems are given, indicating the main parameters of the stripping header and the combine harvester that aggregates it for clearing an unwinnowed grain heap. The proposed approach will enable to accelerate the spiked cereal stripping technology implementation with a high increase in the harvesting unit performance by 1,4 ... 2,0 times and with a fuel economy for up to 45 %.

scholarly journals Methods of identifying grain production cost when threshing grain crops in view of the need in combine harvesters and combine operators

2019 ◽  
Vol 49 (2) ◽  
pp. 85-93 ◽  
Author(s):  
G. E. Chepurin ◽  
A. P. Tsegelnik
Keyword(s):  
Crop Yield ◽  
Production Cost ◽  
High Performance ◽  
Operating Speed ◽  
Grain Crops ◽  
Grain Crop ◽  
Combine Harvester ◽  
Definition Of ◽  
Combine Harvesters

The paper presents substantiation of the rational use of combine harvesters’nominal throughput when threshing grain crops with the yield ranging from 0.8 to 5.0 t/ha and over. The main factors that determine nominal throughput of combine harvesters and their operational indicators are identified. The structure andcontents of thetechnological passport of combine harvesters are substantiated, and the algorithm of effective determination of their key operational indicators, based on the passport, are developed. These indicators depend on harvesting technology, grain crop yield, the share of non-grain part in the threshed grain bulk, the coverage of swath headers and direct-cut headers, and the operating speed of combine harvesters. The definition of the term “technological passport of the combine harvester” is given. Maximum and minimum allowable grain crop yield is established for the rational load of combine harvesters threshing at the standard operating speed of7.5 km/hrecommended by the Ministry of Agriculture of theRussian Federation. The existing methods make it possible to determine the operational efficiency of high-performance machinery by operational costs. However, they do not take into account the shortage of human resources when determining production cost of the threshed grain. As a result of the research conducted, the algorithm and techniques of determination of actual grain cost when harvesting grain crops by direct combining and swath harvesting methods are developed taking into account the need in combines of an i-class and combine operators. Production cost of grain threshed on the area of1000 hectarescalculated by the techniques developed, allows to define the minimum estimated and actual grain cost for an i-class combine harvester by direct combining and swath harvesting methods.

scholarly journals Global trends in the improvement of combine harvesters

2021 ◽  
Vol 282 ◽  
pp. 07008
Author(s):  
V.Ya. Goltyapin ◽  
I.G. Golubev ◽  
D.S. Buklagin
Keyword(s):  
High Performance ◽  
Catalytic Reduction ◽  
Toxic Substances ◽  
Agricultural Technologies ◽  
Global Trends ◽  
Combine Harvester ◽  
Working Bodies ◽  
Combine Harvesters ◽  
Fuel Costs ◽  
Engine Power

It is noted that the use of foreign experience and achievements in the design of domestic machines is one of the effective tools to accelerate the development of agricultural technologies and equipment. The directions of combine harvester improvement and innovations in their designs are given. It was revealed that the most powerful engines (maximum power of 581 kW) are installed on the combine harvesters “Ideal 10” (Fendt company) and “Lexion 8900 Terra Trac” (Claas company). It is shown that the engine power of the most high-performance combine harvesters reached 581 kW. According to the toxicity of exhaust gases, they meet modern requirements. It is found that the technology of selective catalytic reduction SCR is increasingly used in the designs of combine harvesters. They allow to reduce the emissions of toxic substances into the environment by 2-3 times and reduce fuel costs by 40%, as well as the use of natural gas as fuel. It is revealed that the efficiency of using combine harvesters is increased by improving the engines, threshing devices, separation, cleaning, thresher loading and process control systems, working bodies of headers and cutters.

scholarly journals Killing Weed Seeds with Exhaust Gas from a Combine Harvester

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 544 ◽  
Author(s):  
Jakobsen ◽  
Jensen ◽  
Bitarafan ◽  
Andreasen
Keyword(s):  
Exhaust Gas ◽  
Cleaning Process ◽  
Weed Species ◽  
Rumex Crispus ◽  
Alopecurus Myosuroides ◽  
Centaurea Cyanus ◽  
Weed Seeds ◽  
Combine Harvester ◽  
Harvesting Process ◽  
Combine Harvesters

We investigated if hot exhaust gas from a combine harvester could be used to reduce germination or kill weed seeds during the harvesting process. During the threshing and cleaning process in the combine, weed seeds and chaff are separated from the crop grains. After this separation, weed and crop seeds not collected can be exposed to exhaust gas before seeds are returned to the field. Seeds of some common weed species (Alopecurus myosuroides, Centaurea cyanus, Geranium pusillum, Lapsana communis, Lolium perenne, Rumex crispus, Spergula arvensis, and Tripleurospermum inodorum) were treated with exhaust gas at temperatures of 75 °C or 85 °C, 110 °C, and 140 °C for 2, 4, and 6 s, respectively. Afterwards, the seeds were germinated for 16 days. We found that 75 °C and 85 °C were insufficient to significantly reduce germination of the seeds after three durations. Some seeds were still able to germinate after 4 s exposure of 110 °C. An exposure of 140 °C for 4 and 6 s repressed germination of all species. We conclude that there is potential to develop combine harvesters that exploit the exhaust gas to either kill or reduce the ability of weed seeds to germinate before seeds are returned to the field.

“NOVA” COMBINE HARVESTER MAIN INDICATORS ASSESSMENT BASED ON THE RESULTS OF FIELD TESTS

2020 ◽  
Vol 15 (7) ◽  
pp. 991-998
Author(s):  
A.N. Golovkov ◽  
◽  
M.N. Moskovskiy ◽  
S.I. Borzenko ◽  
◽  
...  
Keyword(s):  
Field Tests ◽  
Grain Legumes ◽  
Utilization Rate ◽  
Test Results ◽  
Grain Crushing ◽  
Time Availability ◽  
Combine Harvester ◽  
Combine Harvesters ◽  
Technological Productivity ◽  
Grain Losses

The market for self-propelled combine harvesters in Russia is diverse, with all major global manufacturers present. The domestic leader in combine building is the Rostselmash combine plant. The line of the plant is represented by 24 types of agricultural machinery, and it is constantly being updated. One of the new models “NOVA” is designed for direct combining and separate harvesting of grain and other crops. Self-propelled combine harvester “NOVA” is designed for direct combining and separate harvesting of grain crops and other crops, and with the use of accessories supplied by a separate order of the consumer, for harvesting the grain part of corn, sunflower, grain legumes, cereals, rapeseed, on flat fields with a slope of no more than 8 degrees in all grain-sowing zones. The article presents an analysis and assessment of the main technical and operational and working technological indicators of this combine harvester, based on the protocols of the MIS of the 2016–2017 seasons, for three crops: winter wheat, spring rape and soybeans. According to the test results, the grain harvester “NOVA” showed high technological productivity and reliability, and the operational time availability factor was 0.995, the MTBF of the second complexity group was 125 g. The technological process of the tested combine corresponds to the coefficient 1. Based on the results of field tests, summary tables and the results are verified with regulatory documents, in such indicators as: productivity per hour, utilization rate of shift time, and specific fuel consumption during shift work (without loss of power). With the full satisfaction of the “NOVA” combine harvester with all official requirements, its indicators for grain loss behind the header, total grain losses behind the thresher, and grain crushing decreased even in comparison with those declared by the manufacturer.

scholarly journals Longitudinal Axial Flow Rice Thresher Performance Optimization Using the Taguchi Technique

Agriculture ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 88
Author(s):  
Mohamed Anwer Abdeen ◽  
Abouelnadar Elsayed Salem ◽  
Guozhong Zhang
Keyword(s):  
Performance Optimization ◽  
Feed Rate ◽  
Axial Flow ◽  
Feeding Rates ◽  
Power Requirement ◽  
Rotating Speed ◽  
Seed Loss ◽  
Harvesting Process ◽  
Combine Harvesters ◽  
Working Device

Combine harvesters are widely used worldwide in harvesting many crops, and they have many functions that cover the entire harvesting process, such as cutting, threshing, separating, and cleaning. The threshing drum is the core working device of the combine harvester and plays an influential role in rice threshing efficiency, threshing power requirement, and seed loss. In this study, two structures of rice threshers (conical-shaped and cylindrical-shaped) were tested and evaluated for performance under different thresher rotating speeds of 1100, 1300, and 1500 rpm and different feeding rates of 0.8, 1.1, and 1.4 kg/s. The experiment was designed using the Taguchi method, and the obtained results were evaluated using the same technique. The thresher structure and operating parameters were assessed and optimized with reference to threshing efficiency, required power, and productivity. The obtained results revealed that increasing thresher rotating speed and the feeding rate positively related to threshing efficiency, power, and productivity. The highest efficiency of 98% and the maximum productivity of 0.64 kg/s were obtained using the conical-shaped thresher under a 1500 rpm rotating speed and a feed rate of 1.4 kg/s, whereas the minimum required power of 5.45 kW was obtained using the conical thresher under a rotating speed of 1100 rpm and a feed rate of 0.8 kg/s.

Effect of Vibration on Rapeseed Header Loss and Optimization of Header Frame

2021 ◽  
Vol 64 (4) ◽  
pp. 1247-1258
Author(s):  
Yang Li ◽  
Lizhang Xu ◽  
Zhipeng Gao ◽  
En Lu ◽  
Yaoming Li
Keyword(s):  
Modal Analysis ◽  
Engine Speed ◽  
Vibration Measurement ◽  
List Type ◽  
Positive Correlation ◽  
Combine Harvester ◽  
Analysis System ◽  
Combine Harvesters ◽  
Relationship Of ◽  
The Relationship

HighlightsThe relationship of vibration and header loss was studied by multi-point vibration measurement and loss collection test.There was an approximately linear positive correlation between total header vibration and total rapeseed header loss.The header frame was analyzed and optimized through modal simulation and testing.The total rapeseed header loss of the improved header was reduced by 33.2% to 46.9%.Abstract. In view of the current large rapeseed header losses of rape combine harvesters, the effects of the header on rapeseed header loss were studied from the perspective of vibration. First, the vibrations at various measuring points on the header during rape harvest were studied using a data acquisition and analysis system while performing collection tests of rapeseed header loss with the sample slot method. The relationships between total header vibration and total rapeseed header loss and between vertical cutter vibration and rapeseed vertical cutter loss were shown to have a positive correlation, and they all increased with the increase in engine speed. Vertical cutter loss accounted for 31.2% to 42.4% of the total rapeseed header loss. Modal analysis and optimization of the header frame were then performed by simulation and test. The natural frequencies of the first-order and second-order modes of the optimized header were increased, and the possibility of resonance with other working parts was eliminated. Finally, the improved header was tested during rape harvest. The results showed that the total vibration of the improved header was reduced by 19.9% to 43.9%, and the total rapeseed header loss was reduced by 33.2% to 46.9%. The vertical cutter vibration was reduced by 30.5% to 49.8%, and the rapeseed vertical cutter loss was reduced by 20.8% to 34.7%. In addition, the vibration and rapeseed loss of the improved header had relatively slow rates of increase with the increase in engine speed. The method of reducing rapeseed loss by reducing the header vibration achieved an obvious and positive effect. Keywords: Frame optimization, Modal analysis, Rape combine harvester, Rapeseed header loss, Vibration.

scholarly journals Braking Efficiency and Stability of Chassis Braking System of Combine Harvester: The Theoretical Derivation and Virtual Prototype Simulation

2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
Peilong Li ◽  
Hongmei Xu
Keyword(s):  
Virtual Prototype ◽  
Rear Wheel ◽  
Test Methods ◽  
Theoretical Derivation ◽  
The Road ◽  
Braking System ◽  
Directional Stability ◽  
Driving Speed ◽  
Combine Harvester ◽  
Combine Harvesters

With the advancement of agricultural mechanization, the safety of agricultural vehicles has aroused extensive concern. However, conventional methods evaluate the performance of the combine harvesters in a laborious and inaccurate filed-test way. It is still a challenge to evaluate their performance in a theoretical derivation-based simulation way. Here, we accurately derive the braking model of the combine harvester, which provides a guidance for further braking simulation. Firstly, a four-wheel braking system was designed and theoretically checked. Secondly, the virtual prototype of the chassis braking system was established in ADAMS, in consideration of the complicated contact characteristics between the tire and the road and between the friction pad and the brake disk. Finally, simulation experiments of braking efficiency and directional stability were carried out under different braking conditions. By this means, we find a novel effective yet simple way to optimize the braking efficiency as well as the sufficient braking stability of combine harvesters. The results show that braking efficiency would be improved with stronger braking force, lower initial braking velocity, and lighter weight of the combine harvester. Compared with straight-line braking, steering braking shows lower braking efficiency and less inclination of rear wheel bounce under the same braking conditions. As for braking directional stability, the lateral slippage would be increased with the locking of rear wheels, higher driving speed, or lower road adhesion coefficient. In addition, the simulation results are in agreement with the theoretical results, proving the validity of the virtual prototype simulation. Overall, other than traditional filed-test methods, our method provides an effective yet simple way for designing and evaluating the chassis braking system of combine harvesters.

A Study in the Technology Implementation of the Network Massive Information Processing Platform

2013 ◽  
Vol 347-350 ◽  
pp. 2993-2997
Author(s):  
Yue Li ◽  
Ran Liu
Keyword(s):  
Data Mining ◽  
Information Processing ◽  
Technology Implementation ◽  
High Performance ◽  
High Efficiency ◽  
Information Storage ◽  
The Internet ◽  
The One ◽  
Processing Platform ◽  
Massive Information

With the popularity and development of the network, the support of the high-performance computer technology becomes increasingly important as the huge information storage and the convenience of Information retrieval function of the internet that attracts more and more people join the netizens team. Therefore, I proposed an Information Processing Platform based on the high performance data mining in order to improve the Internet mass information intelligence parallel processing functions and the integrated development of the systems information storage, management, integration, intelligence processing, data mining and utilization. The propose of this system is to provide certain references and guidance for the technology implementation and realization of the high performance and high efficiency network massive Information Processing Platform as on the one hand, I have analyzed the key technology of the implementation of the platform, on the other hand briefly introduced the implementation of the RDIDC.

On the Localization of Combine Harvester

2014 ◽  
Vol 1049-1050 ◽  
pp. 1107-1110 ◽  
Author(s):  
Hua Yang Zhao ◽  
Xiao Qiang Wu
Keyword(s):  
Agricultural Production ◽  
Development Status ◽  
Combine Harvester ◽  
Combine Harvesters

Summary of the development status of combines in domestic and abroad, combined with China's actual conditions, analysis of the problems of combine harvesters, this paper presents the type of combined harvester which suitable for agricultural production in China, put forward rationalization proposals for combine domestic.

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