Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (9): 2686-2694.doi: 10.13229/j.cnki.jdxbgxb.20211199

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Design and experiments of self⁃propelled quinoa combine harvester

Rui-jie SHI1(),Fei DAI1,Wu-yun ZHAO1(),Fa-rong YANG2,Feng-wei ZHANG1,Yi-ming ZHAO1,Hao QU1,Tian-fu WANG1,Jun-hai GUO1   

  1. 1.College of Mechanical and Electrical Engineering，Gansu Agricultural University，Lanzhou 730070，China
    2.Livestock Grass and Green Agriculture，Gansu Academy of Agricultural Sciences，Lanzhou 730070，China
  • Received:2021-11-04 Online:2023-09-01 Published:2023-10-09
  • Contact: Wu-yun ZHAO E-mail:aete_fcb@163.com;zhaowy@gsau.edu.cn

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Abstract:

To improve the mechanization harvesting level of quinoa and solve the problems of a significant loss rate， high impurity rate， and poor feeding during harvesting of ordinary rice-wheat combine harvester， according to the characteristics of quinoa plants during the harvesting period， a sizeable self-propelled quinoa combine harvester was designed. The machine used flaring type small row spacing chain teeth feeding into the header， combined longitudinal axial flow threshing cylinder， unique woven screen concave， double reciprocating vibrating screen and other devices， cooperation wide bridge， threshing cylinder CVT regulation， and excellent space design to realize the smooth quinoa feeding and efficient threshing separation. Critical components for the design were analyzed， and a field experiment was carried out. The results of the field experiment showed that when the water content of quinoa grain was 14.42%， the threshing rate was 96.83%， the impurity rate was 4.41%， the damage rate was 0.2%， the header loss rate was 1.14%， the entrainment loss rate was 1.73%， the cleaning loss rate was 1.09%， the splash loss rate was 0.16%， the total loss rate was 4.13%. During the experiment， the machine runs smoothly and meets the mechanical harvesting of quinoa. This paper can provide some reference for the design and test of quinoa combine harvester.

Key words: agricultural machinery, combine harvester, quinoa, header, threshing cylinder

CLC Number: 

  • S225.5

Fig.1

Quinoa"

Fig.2

Schematic diagram of self-propelled quinoa combine harvester"

Table 1

Technical parameters of self-propelled quinoa combine harvester"

参数数值
整机尺寸（长×宽×高）/（mm×mm×mm）7000×3375×3470
喂入量/（kg?s-1）10
作业速度/（m?s-1）0~2.68
额定功率/kW129
额定转速/（r?min-1）2200
滚筒参数（外径×长度）/（mm×mm）?600×3145
割台幅宽/mm2800
离地间隙/mm≥280
生产率/（hm2?h-1）0.6~1.6

Fig.3

Schematic diagram of header structure of self-propelled quinoa combine harvester"

Fig.4

Schematic diagram of the grain divider inside and stem lodging of quinoa"

Fig.5

Structure diagram of combined longitudinal axial flow threshing cylinder"

Fig.6

Stress analysis diagram of quinoa stem"

Fig.7

Local magnification diagram of unique woven screen concave"

Fig.8

Structure diagram of double reciprocating opposite vibrating screen"

Fig.9

Schematic diagram of particle force of threshing material"

Fig.10

Field tests"

Table 2

Test results of self-propelled quinoa combine"

试验指标脱净率/%含杂率/%破损率/%割台损失率/%夹带损失率/%清选损失率/%飞溅损失率/%总损失率/%
标准值≥95≤5≤3≤3≤3≤3≤3≤5
试验结果96.834.410.21.141.731.090.164.13
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