巻号一覧
23 巻, 4 号
選択された号の論文の16件中1～16を表示しています
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けん引式農用トラクタのけん引解析増田 正三, 都築 亀一郎1962 年 23 巻 4 号 p. 137-140
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーThis report 2 is the kinematic analysis of the traction type farm tractor. At first, according to the Lagrange's equation of motion the equivalent of mass of ractor as a wheeled body is introduced. Then, solving D'Alembert's equations of motion of the tractor, some important relations are obtained, such as the critical acceleration and the others.抄録全体を表示PDF形式でダウンロード (518K) -
1962 年 23 巻 4 号 p. 140-140,160
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (923K) -
川村 登1962 年 23 巻 4 号 p. 141-144
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーDrafting characteristics of small tractor to which Japanese plow was mounted with 3-point free link hitch were studied, measuring the forces acting to the links and their positions, running on even land or acrossing the furrow and ditch. And the resultant resistance of plow, weight transfer, draft of tractor and dynamic responce to the stability of tillage depth were studied.
The upper and lower link forces U and L in running on even land varried correspondingly with each other, and their variations were fairly reduced. The more the imaginary hitch point went to back, the greater the inclination angle of the resultant resistance, the more weight transfer and consequently the more draft yielded.
The 3-point hitch gave good stability of tillage depth than the one point hitch. The curve of tillage depth taken by photograph (Fig. 2) revealed in tendency good agreement to Hain's result, but in actual the value of maximum deviation of tillage depth was greater than the Hain's. It was partly due to the value of U varied from compression to tension at the instance just running over the furrow.
To study the stability of tillage depth, therefore, not only the kinematic method but also the force relation should be considered.抄録全体を表示PDF形式でダウンロード (693K) -
牽引代かき機の諸特性について山沢 新吾1962 年 23 巻 4 号 p. 145-148
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーThe writer investigated the load and the crumbling characteristics of trailing puddling machines to be drawn by small tractors, and studied their adaptability as puddling machines. The results are summarized below:
(1) The electricity consumption of trailing puddling machines showed a little increase in comparison with puddling rotors in the range of slippage ratio from 20 to 30%. A greater influence on electricity consumption was seen by the increase in speed.
(2) The puddling resistance added to the resistance of serriform puddling machines (puddling machines with serrated discs) when the slippage ratio was over 25%. For this reason, the slippage ratio of trailing types should be lowered, and at the same time such wheels as exhibit greater driving force have to be employed.
(3) For the same amount of electricity consumption, trailing puddling machines exhibited higher effects in crumbling and stirring soil in upper layers, but it has less influence on lower layers. Therefore, the hardness of soil increased vertically downwards.
(4) The puddling work with heavy tillers should advisably be done with trailing types for the higher crumbling-stirring effect and load efficiency, for practical purposes.抄録全体を表示PDF形式でダウンロード (604K) -
砂丘地の砂土における特性土屋 功位, 穂波 信雄1962 年 23 巻 4 号 p. 149-155
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーWe studied some characteristics of various wheel lugs by means of the indoor experimental apparatuses. The soil used for our, experiments was dry sand of sand hill.
The preparatory experiment was taken first to measure the soil reaction acting upon a lug which rotates in the fixed apparatus (slippage 100%), and the main experiment next to measure at the same time the soil reaction acting upon a lug, the torque of the test wheel, and the drawber force when the test wheel is running by using some strain gauges. Test car has three wheels which two rear wheels of them run on the rails and one front wheel for the tests runs on the surface in the soil bin. There are also two time-markers for measuring of the running speed in parallel with a rail.
The significant results obtained from this preparatory experiment are following:
1) The max. value of the reaction occurs before the tip of lug reaches to the deepest point, and it appears to be near by the point when the angle of lug is smaller, but to occur reversely a little earlier when the lug rotates faster.
2) The more the width of lug and the angle of lug increase, the more the max. value of reaction increases. Arid the rate of increase becomes larger when the working depth is deeper, but it is smaller than the rate of width of lug.
3) The reaction increases considerably when the radius of rotation of lug becomes larger, but the influence of the working speed is not so much.
The principal results obtained from the main experiment are following:
1) The behaviour of the soil reaction acting upon a lug is different by the kinds of lugs and the drawber forces, and there appears negative reaction at the end of the behaviour when the drawber force is small.
2) The max. drawber horsepower are obtained between 20% and 30% of slippage, and the values become larger when the width of lug and the angle of lug and the height of lug and wheel weight are large respectively.
3) If the lug is high enough, the drawber forces increase with the wheel weights, but the coefficients of traction decrease with them.
4) When the height of lug is small, the larger width is more effective to make the drawber force increase, but when the height of lug is larger, the width of lug must be narrow to make the lug penetrate deep enough in the sand for remarkable increasing of the drawber force.抄録全体を表示PDF形式でダウンロード (2455K) -
常松 栄, 南部 悟1962 年 23 巻 4 号 p. 156-160
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーThe handy bean planters developed in Hokkaido, are used for the seeding of various bean and sugar beet seeds. The seed-metering device is the inclined-plate cell type. The angle of plate is 50 degree, the diameter is 180mm with 10 cells. The plate thickness for graded whole seed and pelleted seed are 6 and 3mm in respetively
The cell diameter are 9, 11, 13 and 15mm for graded whole seed, 6mm for pelleted seed.
According to the laboratory test from 1959 to 1961, the proper speed of cell is about 0.14m per second. Seeding rate for graded whole seed is 4lb at 14mm in cell diameter. For segmented seed, seeding rate is 2.5lb at 10mm. Proper seeding speed is 0.8m per sec (2.88km per hours). The increase in plate speed means the decrease in seeding rate. When the angle of plate was less than 50 degree, the seeder can be seeding of precision planting. By the use of a smooth metal tubes either rectangle or round type, the bean planter can be used for a kind of drill which are capable precision metering of graded whole seed. For 80cells plastic plate, the pelleted seed was planted at 12 seeds per foot.抄録全体を表示PDF形式でダウンロード (2188K) -
空気室内の実態と空気補給の影響について日朝 恒男, 佐古 邦男1962 年 23 巻 4 号 p. 161-164
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーAir chambers which have various capacities and are made of transparent plastics were used. The investigation and observation were made concerning the changes of air and water in the air chambers caused by different working conditions.
The results obtained are as follows:
1) The relations between pressure and compression ratio were always constant, but the air-water ratios changed according to different quantities of absorption and loss of air even under the same pressure.
2) When the engine was operated continuously, the loss of air in the chamber became larger, depending upon how small the air chamber entrance was and how high the pressure. The change of pressure got somewhat larger as the amount of loss increased.
3) During the operation of the engine the amount of air 3 to 6 times as much as the capacity of the air chamber could be absorbed through the water absorbing tube. The larger the amount of absorbed air was, the smaller the change of pressure was.
4) The movement of the water on its surface was very small, and in the upper two-thirds of it the alternating current of water was hardly seen.抄録全体を表示PDF形式でダウンロード (2473K) -
西村 功1962 年 23 巻 4 号 p. 165-167
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーThe structures of farm-use nozzles for pest control are very different in types. The structure, the type of atomising mechanism, groove diameter (di), groove angle to nozzle axis (θ), diamter and height of swirl chamber (D and h), and diameter and length of nozzle disc hole (de and l) infulence to the nature of spraying atomisation. Investigating the various types of nozzles, I knew, atomiser constant (K) connects with ratio of groove diameter and the radius of swirl chambrer (di/r) in the equation of K=-0.18+1.86di/r.抄録全体を表示PDF形式でダウンロード (430K) -
ヘッドのパッキン輪の摩擦特性, 水密性および耐摩耗性について守島 正太郎, 葛原 定郎, 中川 健治1962 年 23 巻 4 号 p. 168-170
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリー1. Under venous pressures of water, authors tested about friction coefficient, water leakage and abrasive characteristic of 4 groups, 7 kinds of materials which were taken as packing ring of sprinkler head. (table 1. Fig. 1 (a))
2. Friction characteristics; Group I (fibrinous with asbestos) has suitable coefficient to continue constant low rotation of head. Group II (gum) has somewhat large coeff. and groups III (teflon and copper alloys) have too small coeff. (Fig. 1 (b). Fig. 2(a))
3. Water leakage; All is good excepting group IV. (Fig. 2 (b))
4. Abrasive characteristic; Materials 1, 4 and 7 are superior.
5. From these tests shown above, it was cleared that fibrinous material 1, as used in “Rain Bird” head, has the best characteristics as packing ring.
6. In field tests, material 1 showed the best rotation of head.抄録全体を表示PDF形式でダウンロード (484K) -
刈倒し型広巾刈取機の試作研究江崎 春雄, 奥井 和致1962 年 23 巻 4 号 p. 171-175
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーWe have reported about our windrowers named E52, E54 and E55 with cutter bar length of 30cm or less which could cover one or two rows of crops.
Recently some extension works to drill wheat, barley and rice by tractor mounted drill seeders were took up into activity, and this tendency urged us, to develop other types of harvesters with which to harvest drilled crops.
From 1959 to 1961, we constructed and tested three types of small windrowers attached to small tractors (2-5PS), cutter bar length of which was 60cm. Two of them, namely HR601 (fig. 4) and HR 604 (fig. 7), gave good results. Many partial mechanisms were also tested in field conditions.
These two were found to be suitable for windrowing 4 rows of drilled/50cm width of broadcast wheat or barley, or 3 rows of transplanted rice. When the width of cutter bar, poor results were obtained. The adaptability of these machines for lodged crops is illustrated in fig. 8.
HR601 has simple mechanism, and several agricultural machinery factories began to commercialize it.
Though HR604 is larger and much complicated than HR601, the former makes it easy for farmers to band. le the windrowed crops manually. Further, the divider board of the harvester can divide lodged crops farely well.抄録全体を表示PDF形式でダウンロード (2290K) -
薬師寺 真, 清水 浩1962 年 23 巻 4 号 p. 176
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (173K) -
坂本 正夫1962 年 23 巻 4 号 p. 176a-178
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (636K) -
台湾工程師学会に出席して岸田 義邦1962 年 23 巻 4 号 p. 178-180
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (637K) -
清水 浩1962 年 23 巻 4 号 p. 180-183
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (798K) -
1962 年 23 巻 4 号 p. 184-186
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (473K) -
新関 宏太郎1962 年 23 巻 4 号 p. 187-188
発行日: 1962/03/31
公開日: 2010/04/30
ジャーナル フリーPDF形式でダウンロード (283K)
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