A Study of Suction Principle Applied to the Chicken-Catching Machine

• Main Authors: Chuo, Kwei Bine, 卓魁彬
• Other Authors: J.M.Chen
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/37776628196790272126

碩士 === 國立中興大學 === 農業機械工程學系 === 85 === ABSTRACT The application of vacuum suction technique toreplace the hand operation is one of the effective waysin developing automatic chicken-catching machine.In orderto achieve the advantages of this technique, an indoor-simulation device was set up. It was used to simulate thecatching operation and measure the corresponding data ofthe suction force, height and angle of the suction device, as well as the transportation speed of the conveyer.These data can be used to modify the design of thechicken-catching machine. According to the test data, thewind speed at suction entrance is linearly dependentwith the rotation speed of the fan motor. The linearityis more than 99%. For the chicken weighing between1.75-2.0kg,the suction device can be placed at 25cm abovethe ground with the wind speed at 20-24.5m/s.The downwardconveyer can achieve the best performance if it has anangle of 22 degree with the ground and has a 10cmextension in the forward direction. When the downwardconveyer has a transportation speed of 0.26~0.49 m/s, the chicken can be caught at a rate of 2300∼4400 chickenper hour. This research has made a prototype of the second- generation chicken-catching machine. This machine is 430cm in length, 175cm in width, and 180cm in height. It isdriven by wheels to increase its mobility, and usesvacuum suction for chicken-catching operation. Thecaught chickens are packed in cages automatically withthe operations of conveyer. According to the test data,fans made in Taiwan can produce more suction power thanimported ones. They have a smaller size as well. Somemodifications have been made in this prototype,especially in its mobile system, steering system,structure, and vibrating system, such that it can achievea better mobility and have a better performance andstrength. The new designed electronic control systemsimplifies the whole operation. This machine can get2000 chicken per hour at least in catching capacity,causing the total cost reduce by 13 percent compared totraditional way- catching by hand.Key words：Broiler、 Chicken-Catching Machine 、 Suction Principle、 Automation