Development and Performance Analysis of an Electrically Operated Spreader for Control of Red Imported Fire Ants
Date Issued
2006
Date
2006
Author(s)
Yu, Tsung-Yu
DOI
zh-TW
Abstract
At present the more popular preventing method for RIFA is to reduce the applying quantity of chemical baits. Currently most small-type spreaders are manual-operated, and must be grasped by hand. This method consumes a great deal of manpower. In addition, the chemical baits will also cause a negative influence on other living creatures and the environment. Therefore we have to control the spreading amount of baits.
The main purpose of this thesis is to develop a pesticide spreader, which can improve the traditional manual-operated spreader, save manpower by using electric power, and also electrically control the spreading quantity of baits. The material of this electrically operated spreader is metal sheet. In this study a DC electric motor is used to replace the traditional manual-operated cranking bar as the power source. The rotating speeds of the rotary spreading disc, and thus the spreading ranges, can be controlled by changing the input voltages of the motor. The spreading quantity of baits can be adjusted by changing the output openings of hopper. A computer software package called I-DEAS is used to simulate the spreader to analyze the stress distributions and nature frequencies of the spreader. These frequencies are higher than the driving speed of the spreader, therefore the large deformation on the spreader doesn’t appear. From the results of actual spreading tests of baits and computer simulations of the spreader, the electrically operated spreader has a better performance than the conventional manual-operated one.
Subjects
入侵紅火蟻
撒佈機
有限元素法
Red Imported Fire Ants
Spreader
Finite Element Method
Type
thesis
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