| Design and experiment of corn thresher with varied-diameter and varied-spacing spiral plate tooth |
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| DOI：10.7606/j.issn.1000-7601.2013.01.41 |
| Key Words: corn thresher spiral plate tooth varied-diameter and varied-spacing design experiment |
| Author Name | Affiliation | | ZHAO Wuyun | College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China
School of Engineering, Gansu Agricultural University, Lanzhou 730070, China | | GUO Kangquan | College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Aimed at the problems that the conventional seed c
orn threshers faced in operation such as the high loss rate and high crushing ra
te of grains, and high impurity rate of broken cores, which caused great influen
ce to the germination and cleaning of corn seeds, a new type of corn thresher wi
th varied-diameter and varied-spacing spiral plate tooth was developed. Combine
d with the threshing process by squeezing and rubbing and bionic technology, the
key parts of the prototype including the threshing device with varied-diameter
and varied-spacing spiral plate tooth and the cob discharging outlet device wit
h variable stiffness clamp were designed and analyzed theoretically, and the exp
eriment of the corn thresher was carried out. The results showed that, by adopti
ng the seed corn thresher with varied-diameter and varied-spacing spiral plate
tooth, the broken rate of grains was 0.45%～0.64%, the threshing loss rate was
0.30%～0.53%, and the impurity rate was 4.13%～5.83%, which could meet the d
emand of clean threshing, low fragmentation and little broken core. |
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