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Topic

Technologies and technical equipment for agriculture and food industry

Volume

Volume 74 / No. 3 / 2024

Pages : 535-542

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EXPERIMENTAI STUDY ON THE PERFORMANCE OF CORN STALK CRUSHING DEVICE WITH STEPPED SAW DISK KNIFE

阶梯式锯盘刀玉米秸秆粉碎装置性能试验研究

DOI : https://doi.org/10.35633/inmateh-74-47

Authors

Yongtao Yu

Weifang University

Yanjun Li

Weifang University

(*) Fuxiang Xie

Weifang University

Jian Song

Weifang University

Yong Tian

Weifang University

(*) Corresponding authors:

[email protected] |

Fuxiang Xie

Abstract

Responding to the problem of over-returning of corn stalk to the field, this article proposes a comprehensive utilization model that returns 30% of corn stalk to the field from above the surface and recycles the remaining 70% as fodder is proposed. For the problems of poor quality of stalk crushing and fast knife wear, the experimental platform for corn stalk crushing with vertical shaft stepped saw disc knife was designed. The effects of different factors on the qualified rate of stalk cutting length and cutting power were investigated. The qualified rate of cutting length was the best 96.57% when the plant spacing was 20 cm. The cutting power was the smallest 322.94 W when the rotational speed of knife roller was 600 r/min. The stalk crushing process was analysed by high-speed camera, and the stalk crushing mechanism was clarified.

Abstract in Chinese

针对玉米秸秆还田量过大的问题,本文提出了将玉米秸秆自地表以上30%还田,其余70%回收作饲料的综合利用模式。针对秸秆粉碎质量差、刀片磨损快等问题,设计了立轴阶梯式锯盘刀玉米秸秆粉碎试验台,实现秸秆离地粉碎。通过单因素试验,探究了刀辊转速、喂入速度、钳住角、拨禾星轮转速、株距对秸秆切断长度合格率和切割功率的影响规律。当株距为20 cm,切断长度合格率达到最高为96.57%。当刀辊转速为600 r/min时,切割功率达到最小为322.94 W。通过高速摄像对秸秆粉碎过程进行了分析,明晰了秸秆粉碎机理。

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