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リュウザイ サンプ ソウチ ノ カイハツ ニ カンスル ケンキュウ ダイ1ポウ リロンテキ ケイサン ト サンプ ソウチ ノ シサク ノウギョウ コウガク

The Development of Granular Applicator. I : Theoretical Consideration and Developing of the Machine

Japanese (日本語)

神戸大学農学部研究報告

15(1)

123-127

神戸大学農学部

1982

2006-09-15

本文ファイルは、国立情報学研究所CiNiiより提供されたものです。

The brodcaster and the limesower are usually used in oder to scatter granular manures and agricultural chemicals. It is impossible to use such high-performance machines in the field where the crops have grown for an additional fertilizing and the pest control. Therefore shooting type granular applicator becomes available, which spreads granular manures, agricultural chemicals and seeds through the air from the ground. For this purpose we are now under developing the granular applicator as a fertilizing, pest control machine and sawing machine, and making theoretical researches and experimental investigations. This type of granular applicator shoots up a capsule in which granular substances are contained to the previously calculated height. Then the capsule bursts automatically and granular substances are diffused in the air and scattered uniformly on the ground 1) The development of the shooting machine The mechanism of the shooting machine is based on the rapid shooting a capsule produced by compressed power coilspring. The machine without any artificial power is easily handled manually. 2) The mechanism of the diffusion of substances The capsule shooted up draws a string which is connected to the machine. when the string is tight, the capsule is torn and the contained substances are diffused into the air. 3) Theoretical calculation for the uniform distribution For the uniform distribution of granular substances we consider collectively factors of the initial velocity, the projection angle, the shooting direction, the bursting height of a capsule, the number of capsules demanded and the mass of a capsule. The demanded kinetic energy for shooting and broadcasting of a capsule is the total amount of a capsule's potential energy in the bursting point, the bursting energy and the diffusion energy of granular substances. The diffusion energy is calculated with the diameter of broadcasting area, the mass of a capsule, the angle of fiying each granules after bursting and the height of the bursting point. The spring constant k is defined to be the most important factor by the design of the shooting machine. the following equation was employed to choose the spring of constant k, k=√<2(Mgh+Σ__11/2m_1v_1^2+E_2)>/x.

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