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 1
Displaying 1-22 of 22 articles from this issue
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  • Research and Education on Agricultural Machinery should be Based upon Field Experiences
    Toshio FURUCHI
    1985 Volume 47 Issue 1 Pages 2-3
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.2
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1985 Volume 47 Issue 1 Pages 4
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.4
    JOURNAL FREE ACCESS
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  • Studies on a Track Type Tea Field Working Machine (II)
    Pest Control Machine and Herbicide Applicator
    Yashuho MATSUYAMA, Katsuro OKAMURA, Yoshimi MATSUMOTO, Kazuo SATONAKA
    1985 Volume 47 Issue 1 Pages 5-10
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.5
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    Based upon the experimental results obtained before, a pest control machine and a herbicide applicator were made as an prototype machine. The chassis used here was reported in the Ist report. This pest control machine has a mechanism whose swath width is changeable according to the spread of plant, from young tea field to matured tea fied. For operating accuracy, this machine excels in exterminating Kanzawa spider mite and Tea green leafhopper that are thought to be difficult to exterminate, and at plucking time a few leaf harmed by pest were found. The working area per hour of this pest control machine was 65a/h at the application rate of 2kl/ha and 33a/h at the application rate of 4kl/ha. A herbicide applicator spreads herbicide in the space between hedges, and has a mechanism of which applicator is automatically kept at the center of row spacing against the winding of the machine. The working area per hour of this herbicide applicator was 53a/h.
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  • Studies on Rotary Blades in Up Cut Tilling for Deep Tillage (III)
    Model Test (2) Tilling Resistance by Trial Blade
    Sakae SHIBUSAWA, Noboru KAWAMURA
    1985 Volume 47 Issue 1 Pages 11-18
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.11
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    This paper describes the effects of the configulation of scoop surface and tilling conditions on tilling torque and tilling reaction force acting on the blade. The circular scoop surface is determined by such values as the radius of curvature ρ of the arc, the central angle φ subtending the arc and the angle φ1 between the lines through the blade tip, the center of rotation and the center of curvature of the arc. The results of experiment were: (1) in case of up cut rotary tilling, tilling torque and tilling reaction force were increased with ρ and φ, and they showed minimum values at φ1=40°, (2) up cut rotary tilling gave less tilling torque and less tilling reaction force than down cut rotary tilling, this was more evident when tilling depth was deeper and/or revolutional speed was lower, (3) in case of up cut rotary tilling, both the improvement of backward throwing of soil clods and the reduction of tilling resistance were simultaneously achieved by using the blade with the scoop surface of smaller ρ under φ=50° and φ1=40° and/or by increasing revolutional speed with decreasing tilling pitch.
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  • Studies on Intellectualization of Agricultural Machinery (On the Artificial Tactile Sense)
    Part 2 Identification of the Dynamic System Model of the Viscoelastic Materials and Its Application to the Farm Products
    Yoshio IKEDA
    1985 Volume 47 Issue 1 Pages 19-27
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.19
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    The computer controlled equipment for measuring the dynamic properties of the farm products was designed, the plastic erasers considered as the standard viscoelastic materials were excited by the random force and the frequency response functions were estimated in real time. These viscoelastic materials were described mathematically by the mechanical systems consisting of the rheological models and the mass. The general method by which the twenty-four dynami models produced through combination of these elements could be reduced to five basic models to describe the measured frequency response curves was discussed, and the system parametesrs were estimated with the non-linear least spuare method between the measured frequency response curves and the theoretical ones.
    It was found that the most suitable mechanical model was composed of the mass and Voigt model on the strength of the uniqueness, stability and convergency of the estimated parameters and reproducibility of the measured response curves. This proposed model was applied to the excited cubic samples of the apple and it was verified that the frequency response curves of the apple samples could be described by this mechanical model. The relations between the estimated parameters and the quality of the apple were investigated and it was confirmed that the quality changes of the apple during storage could be detected through these parameters in real time.
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  • Studies on the Chipping Characteristics of Chippers for Pruned Branches (I)
    Flywheel Type Chipper
    Masaki MATSUO, Toshitaka UCHINO, Mitsuo IIMOTO
    1985 Volume 47 Issue 1 Pages 29-34
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.29
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    The chipping characteristics of a flywheel type chipper for pruned branches were tested, and the effects of material property, water content and rotational speed of a tested chipper on the mean power requirements and chip size were evaluated.
    The arrangement of knives of a commercial tested chipper had been constructed with one flat knife and srven toothed knives. The newly proposed arrangement which was reconstructed with six toothed knives had almost the same ability as the traditional one.
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  • Study on the Improvement of the Peanut Splitter (1)
    The Performance of the Wing Type Peanut Splitter
    Haruo ESAKI, Mikio YASHIRO
    1985 Volume 47 Issue 1 Pages 35-41
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.35
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    Wing type peanut splitters are being used presently in peanut processing facilities. However the level of efficiency and accuracy of this performance is unsatisfactory and requires improvement.
    In this report, we analyzed the relationship between the changes in the various mechanical factors and the performance of the wing type splitter. Also the process of pod splitting and the damage caused to the kernels in the splitting chamber were studied by using a high speed video recorder.
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  • The Study on the Vibratory Soil Cutting of Vibratig Subsoiler (Part 2)
    The Effects of Amplitude and Frequency on Draft Force Reduction
    Kenshi SAKAI, Hideo TERAO
    1985 Volume 47 Issue 1 Pages 43-49
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.43
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    In the previous paper (Part 1), it was found that the cutting directional angle β is one of the most important parameters of vibrating subsoiler and the vibrating type of β>0° is the optimal one for draft force reduction.
    The main purpose of this paper (Part 2) is to know how effective the amplitude and the frequency are on draft force reduction.
    The tested subsoiler was the remodelled subsoiler No. 1, described in the previous paper (Part 1). The chisel of this machine has a mixed motion of backward and forward combined with up and down. Three different cutting directional angle β were used. The amplitude was varied as follows 8.2, 15.9, 24.9, 35.0mm. The frequency was varied from 3.75Hz to 18.0Hz. The travel velocity was varied as follows 0.25, 0.60, 1.0m/s.
    It is concluded from the experiments that the effect of the amplitude on draft force reduction is greater than that of the frequency and at the same velocity ratio λ=V0/(2πaf), the draft force decreases as the amplitude is greater.
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  • Development of Filature Data Measuring Equipments and Analysis of Dynamic Properties of Filature Process
    Chiyuki TAKABAYASHI, Akira HOSOKAWA
    1985 Volume 47 Issue 1 Pages 51-59
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.51
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    In order to measure the state of cooked cocoons, the authors constructed a measuring equipment based on the impulse response method (first control stage) and another measuring equipment using peeling tension pulses of cocoon filaments (second control stage) for application to an actual filature process. In addition, they developed the equipments to measure the size of brushing waste of cooked cocoons and the actual reelability. Using these measuring equipments, they analyzed the dynamic properties of a filature process by the transient response method. As a result, the state of cooked cocoons in the filature process.
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  • Methods of Detecting Fruit by Visual Sensor Attached to Manipulator
    Fruit Detecting Experiment and Simulation by Computer
    Naoshi KONDO, Noboru KAWAMURA
    1985 Volume 47 Issue 1 Pages 60-65
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.60
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    A simple and cheap color camera, which could recognize various kinds of fruits, was made and used as a visual sensor in order to develop a fruit harvesting robot. This camera was attached to a manipulator of the robot and able to recognize and detect a fruit with the access motion of the manipulator to the fruit, even if the fruit was so far from the camera and picture element number was so small.
    In this paper, two methods of detecting the position of fruit by use of the motion of the manipulator of which the camera was attached to near its hand, were investigated by an experiment and a computer simulation.
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  • Seeding Depth Control System for the Rice Seeder Used in the Submerged Paddy Field (II)
    Rigid body motion of rice seed sown in the soil due to seminal root elongation
    Haruhiko MURASE, Yoshiaki NAKAMURA, Noboru KAWAMURA
    1985 Volume 47 Issue 1 Pages 66-72
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.66
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    In the Part I of this series of study, a computer-simulated rice plant lodging model revealed that a rice plant with a below-ground culm length less than 0.5cm is potentially subjected to the lodging of toppling type.
    In this paper, the motion of rice seed sown in the paddy soil due to its seminal root enlargement was simulated dy using the boundary element method, The apparent buoyancy acts on a rice seed sown in the soil when the seed is surrounded by oxygen gas produced from the coating chemical (Calper). It was found that a rice seed enclosed in a cavity of oxygen bubble can be pushed up readily by the reaction force of the seminal root elongation. The results obtained from this study gave an optimum range of seeding depth that fits the DSSP (Direct Seeding with coated rice in Submerged Paddy field) system. The optimum range of seeding depth is 0.8 to 1.5cm below the soil surface. The performance of seeding device of seeder designed for the DSSP use should satisfy the conditions for optimum seeding depth.
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  • Investigation on the Pyrolytic Conditions of Biomass
    on the Liquid Phase Recovery and the Gas Phase Components
    Hiroshi SHIMIZU
    1985 Volume 47 Issue 1 Pages 73-78
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.73
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    Biomass materials were pyrolyzed in an air-tight tube at various temperatures, pressures and pyrolytic times, in order to determine the ratios and the properties of the three phases.
    From the experimental results, the conditions were found that it can produce more liquid phase. The components of the gas phase were analyzed. The liquid phase of the biomass will be available for power sources while the gas phase, for heat sources.
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  • Utilization of Solar Energy for Dairy Farming (III)
    Experiments for Compound Solar System
    Hisaya YAMADA, Noboru KAWAMURA, Kiyoshi NAMIKAWA
    1985 Volume 47 Issue 1 Pages 79-84
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.79
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    In dairy farming, much hot water is needed over a wide temperature range, a compound solar system consisting of high temperature and low temperature system to supply hot water was proposed and effectiveness of the system was discussed by digital simulation in the previous reports.
    This paper describes experimental results of compound solar system on a small scale daily farming. Effectiveness of the system was confirmed by the experiments and method of prediction of solar radiation for controlling the system is reported.
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  • Performance of Pneumatic Seed Drill
    Yoshiichi OKADA, Katsumi ISHIKAWA, Masateru NAGATA
    1985 Volume 47 Issue 1 Pages 85-89
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.85
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  • Vacuum Drying of Silkworm Cocoons
    Yasuhisa SEO, Yasuyuki SAGARA, Hiroshi MORISHIMA, Akira HOSOKAWA, Tsut ...
    1985 Volume 47 Issue 1 Pages 91-94
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.91
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  • The Qualities of Wheat Dried with Heated Air
    Yasuhiro SASAKI
    1985 Volume 47 Issue 1 Pages 95-98
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.95
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  • Study on the Drying of Figs
    Zheng he SUN, Kenji NAKAGAWA, Kazuo HORIBE, Sei-ichi OSHITA
    1985 Volume 47 Issue 1 Pages 99-103
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.99
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  • Development of Three-Point Linkage Dynamometer
    Kunio MORIMOTO, Motomu KARAHASHI
    1985 Volume 47 Issue 1 Pages 104-106
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.104
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  • Conditions of Suited for Separation of Tea Stems by Electrostatic Separator
    Drum Type
    Senkichiro HAYAKAWA, Eiichiro SAKAGUCHI, Ritsuya YAMASHITA
    1985 Volume 47 Issue 1 Pages 107-112
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.107
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  • Automatic Field Work Apparatus
    Fukuji MIYAZAWA
    1985 Volume 47 Issue 1 Pages 113-116
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.113
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  • Mixing and Decomposition of Rice Straw from Combine by Tillage
    Yoshio SHINMURA, Akira UEMORI, Kozo KUTSUNA
    1985 Volume 47 Issue 1 Pages 117-120
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.117
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  • Plant Breeding and Tissue Culture
    Present Situation and Future
    Kunio TORIYAMA
    1985 Volume 47 Issue 1 Pages 121-125
    Published: 1985
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11357/jsam1937.47.121
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