JOURNAL of the JAPANESE SOCIETY of AGRICULTURAL MACHINERY
Online ISSN : 1884-6025
Print ISSN : 0285-2543
ISSN-L : 0285-2543
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Volume 47, Issue 4
Displaying 1-19 of 19 articles from this issue
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  • Miscellaneous Thoughts on Agricultural Machinery
    Haruo HORIHATA
    1986 Volume 47 Issue 4 Pages 427-428
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.427
    JOURNAL FREE ACCESS
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  • Analysis of Ignitability under Low Temperatures of Diesel Engines Using Sunflower Oil as a Renewable Fuel (Part 3)
    New Injection System (Double Injection System)
    Ken ARAYA, Tomiho YOSHIDA
    1986 Volume 47 Issue 4 Pages 429-434
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.429
    JOURNAL FREE ACCESS
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    when sunflower oil (or general plants oil) was used as the alternative of diesel engine fuel, the ignitability under low temperatures was much poorer than for diesel oil. A new fuel injection system (Double injection system) was developed and it improved startability under cold condition. In starting in this system, a specified fuel is primarily injected into the pre-combustion chamber at about 200° before TDC while the flow velocity at the connecting passageway is still slow under the compression stroke. The primarily injected spray can be achieved to main chamber and a pre-explosion can be caused in the main chamber. The second spray is subsequently injected at 5° before TDC and a main explosion is connected. The research in this paper was conducted to the mechanism and the principle of this double injection system.
    As a result of the startability test under cold condition using sunflower oil, the lowest temperature at which engines could not be start, was 10°C when the general injection system, however this temperature was improved up to -1°C when the double injection system was used.
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  • Measurement and Control of the Experimental condition of Cooked Cocoons in the Silk Producing Process
    Chiyuki TAKABAYASHI, Akira HOSOKAWA
    1986 Volume 47 Issue 4 Pages 435-442
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.435
    JOURNAL FREE ACCESS
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    In order to determine the cooking condition required for the characteristics of any given group of cocoons, the authors have developed a system for measuring the state of cooked cocoons after the cooking process and controling the elements of the cooking process in order to obtain the correct cooking condition. The same system is being used in the reeling process, and can replace the manual labor. Afterwards the authors conducted the experiments by use of the new system to evaluate the quality of a cooked cocoon and thus to control the cooking condition, and verified the validity of the system.
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  • Studies on Brown Rice Conditioning (Part 2)
    Experiment of Deep Layer Conditioning
    Kazuhiko ITOH, Shuzo KAWAMURA, Yoshinori IKEUCHI
    1986 Volume 47 Issue 4 Pages 443-451
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.443
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    This study was carried out to determine the rational conditions of brown rice conditioning using deep layer (50cm) conditioing method. The experiment was performed to intermittent and continuous conditioning.
    The paper describes the rate of water absorption increased with the increase of air flow-rate and air temperature. Particularly, the increase of air temperature was remarkable. No remarkable difference in water absorption rate was found between the intermittent and the continuous conditinoing method. The moisture content difference in brown rice layer decreased with the increase of air flow-rate using the continuous method. Considering the relationship between the rate of cracked kernel and the rate of breaked kernel, it was found that the upper limit of air condition was 20°C-90% and 25°C-85% in case of using 0.2m3/sec·ton air flow rate.
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  • Study on the Improvement of the Peanut Splitter (2)
    Performance of the Centrifugal Type Peanut Splitter
    Haruo ESAKI, Mikio YASHIRO
    1986 Volume 47 Issue 4 Pages 453-458
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.453
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    Attempts were made to design a centrifugal type peanut splitter and the performance of the machine was tested under various conditions. The changes in the moving locus of a peanut pod in the splitting chamber and the splitting process were analyzed. Tests showed that the splitting performance of a wing type splitter combined with a centrifugal type was superior to that of a single model.
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  • Studies on Improving the Soil-Overturing Properties of Rotary Blades (1)
    Experimental Research on The Soil-Overturning Properties of The Blades
    Jun CHEN, Satoru NAMBU, Hideo TERAO
    1986 Volume 47 Issue 4 Pages 459-467
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.459
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    The purpose of this study is to investigate the main factors affecting the soil-overturning properties of rotary blades and to obtain basic data to develop a rotary blade which will propose the better ability for overturning tilled soil. In this paper, the overturning ratio was defind, and a special experimental method to detect the condition of the original thrown top soil was developed, and a formula to calculate the overturning ratio using the number of detected indicies was derived. Rotary tilling tests were also performed with blades N1, N2 and N3. According to the experimental results, it was found that the soil-throwing patterns of the tested blades involves the first order soil-throwing (including the collisionless soil-throwing and the collision-throwing of soil particles being thrown) and the second order soil-throwing (including the collision-throwing of soil particles being thrown with the blades being rotating and the re-tilling of the remaining soil). Also the qualitative relationship between soil-throwing patterns and soil-overturning properties was proposed. According to the qualitative relationship, the collision-throwing of soil particles being thrown with the blades during rotation was found to be the main detrimental factor affecting on the resultant soil-overturning properties. Five possible methods to improve the soil-overturning properties of rotary blades were proposed. The results of three acting factors of the tested blades N1, N2 and N3 will be reported in the following paper.
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  • Studies on Agricultural Terrain Profiles (III)
    Roughness of Agricultural Terrain
    Kazuhiko OHMIYA
    1986 Volume 47 Issue 4 Pages 469-474
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.469
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    To evaluate the characteristics of farm field profiles as the source of tractor vibration, profiles of 3 meadows and 7 terrains were selected, measured and analyzed. The power spectral densities of measured profiles were approximated on the right-down slope lines on a log-log coordinate and no periodic uneveness was found among them. Roughness in the meadows were not the same as on other roads and rough terrain. No difference could be however found between the frequency characteristics of meadows and other terrains. The recommended classification of roughness of roads by ISO/TC108 was useful for classifying the roughness of farm fields.
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  • Studies on Axial-Flow Thresher (Part 1)
    Evaluation of the Design Parameters of Prototypes
    Seung-Kyu LEE, Noboru KAWAMURA
    1986 Volume 47 Issue 4 Pages 475-483
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.475
    JOURNAL FREE ACCESS
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    This experiment was carried out to develop the axial-flow thresher, and to find out the basic data and possibilities of developing the new combine suitable for small Asian farms.
    Three prototype equipments; a cylindrical type and two conical types (20 and 40 degree of cone apical angle, respectively) were constructed and tested under various machine and crop conditions. In this paper, some design parameters of prototypes were evaluated and discussed.
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  • Simulation of Dairy Milking Operations (I)
    Rotary Milking Parlor
    Akihiro GONDO, Sanki HASEGAWA, Yukio AZUMA
    1986 Volume 47 Issue 4 Pages 485-492
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.485
    JOURNAL FREE ACCESS
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    The simulation model for analyzing the performance of the rotary type milking parlor for daily farm was developed and the performence under various conditions was compared and discussed. The followings were found:
    (1) It was found that the average milking time and the number of stall gave the effect on the milking performance.
    (2) The milking performance depends on the preparation work time, average milking time and the time reguired for one circulation of rotary parlor.
    (3) The extra time of worker can be decreased unith the shorter length of average time of milking the more number of stal and the longer preparation work time.
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  • Studies on Soil Stickiness to Rotary Devices (Part 1)
    Actual Condition of Fields with Volcanic Ash Soil
    Kazuhiro SERATA, Toraji TAWARA, Tomoo AOYAMA, Seisyu TOJO, Kengo WATAN ...
    1986 Volume 47 Issue 4 Pages 493-498
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.493
    JOURNAL FREE ACCESS
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    Sticking soil to thh rotary tilling device is affected most significanty on working performance. Condition of sticking soil is sticked on inside cover of tilling device, tilling shaft and operation of tilling device. Which it will stick vigorously, there is affected on working capacity and drive control of tiller.
    As the sticking soil was revealed through our experimental observation, the soil begin stick from cover to the circumference of rotary tilling device. And the functions of working machine is produced on lowering to stick.
    Now, in the one's fast research, we was revealed through the experimental for relation ship between setting drive and sticking soil proceeds. We will takes the quidance to researches.
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  • Performance of Pneumatic Drill for Wheat
    Yoshiichi OKADA, Katsumi ISHIKAWA, Masateru NAGATA
    1986 Volume 47 Issue 4 Pages 499-505
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.499
    JOURNAL FREE ACCESS
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    With the object of the development of fertilizer drill for the labor-saving and highyield agronomic technology for wheat suited to the agronomic system in Japan, this study was socused on the seeding mechanism utilizing pressurized air. With regard to the applicability of this seeding mechanism, the field experiments were conducted in terms of establishment of accurate seedling and easy handling. In the tests a tiller direct mount type 6-row, tractor direct mount type 6-row and 12-row pneumatic drills were used and the high potential of practical use of this pneumatic drill was found.
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  • Measurement of revolution speed and torque by using microcomputer
    Toshio KONAKA, Shotaro YUZAWA, Norio NAGASAWA, Fukuji MIYAZAWA, Ken TA ...
    1986 Volume 47 Issue 4 Pages 507-513
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.507
    JOURNAL FREE ACCESS
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  • Development of 6-Force Components Dynamometer for Three-Point Hitch of Tractors
    Osamu KITANI, Satoshi YONEKAWA, Tsuguo OKAMOTO, Motomu KARAHASHI, Kuni ...
    1986 Volume 47 Issue 4 Pages 514-518
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.514
    JOURNAL FREE ACCESS
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  • Analysis of Self-Starting System of Engines
    Ken ARAYA
    1986 Volume 47 Issue 4 Pages 519-522
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.519
    JOURNAL FREE ACCESS
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  • Development of a Furrow Opener and a Seed Coverer of the Paddy Direct Seeding Drill
    Yoshiaki NAKAMURA
    1986 Volume 47 Issue 4 Pages 523-527
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.523
    JOURNAL FREE ACCESS
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  • Effect on the introduction of 4 wheel drive tractor in hill side area
    Kuniji MOTOHASHI, Katsyuki TANAKA, Toshiyuki TAKAHASHI
    1986 Volume 47 Issue 4 Pages 528-530
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.528
    JOURNAL FREE ACCESS
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  • Development of Spraying Sleighs and Effects of the Pest Control
    Nobuhiko KAWASHIMA
    1986 Volume 47 Issue 4 Pages 531-534
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.531
    JOURNAL FREE ACCESS
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  • OECD Restricted Standard Code for Official Testing of Agricultural Tractor Performance
    Kunio NISHIZAKI, Hiroyuki TAKAHASHI
    1986 Volume 47 Issue 4 Pages 535-541
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.535
    JOURNAL FREE ACCESS
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  • Soil Rheology in Terramechanics
    Akira OIDA
    1986 Volume 47 Issue 4 Pages 543-551
    Published: 1986
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.543
    JOURNAL FREE ACCESS
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