4QJ⁃3型青贮燕麦捡拾割台的研制

doi:10.13229/j.cnki.jdxbgxb20200568

Abstract

Abstract:

Combined with the present status of silage demand in China and the problems of low mechanization level， poor adaptability and versatility， complicated operation process， high labor intensity as well as high cost in oat gathering， giving full consideration to the application of the silage oat collecting equipment and the status quo of its development， the 4QJ-3 silage oat collecting and cutting header was developed. At the same time， the core components such as the picking and conveying mechanism， the forced feeding mechanism and the structure of chopping and kneading were designed， and the field performance test was carried out. With the combination of the throwing blade of spiral protrusion and kneading board， the material can be kneaded and thrown effectively. The results of field trials showed that the prototype and its components work well. When the tractor's forward speed is 2.7~6.8 km/h， the missing piking rate of the prototype is 0.6%~1.1%， the material cutting length is 20~36 mm， the kneading rate is more than 93%， and the pure working hour productivity is 0.60~1.49 hm²/h. Though all the performance indexes are in good agreement with the design values， but there are still many problems in the prototype when the forward speed is high and the continuous operation time is too long. In the later stage， it is necessary to optimize and improve the machine and key parts， and conduct field test to improve the operation efficiency and reliability of the machine. The development of the prototype can lay a theoretical foundation for the research and development of other types of silage harvester.

Key words: agricultural mechanization engineering, oat, pick-up header, spring roller, gripping feeding, chopping and kneading

CLC Number:

S225.8

Rong-qing LIANG,Bo ZHONG,He-wei MENG,Zhi-min SUN,Za KAN. Design of 4QJ⁃3 type pickup header of silage oat[J].Journal of Jilin University(Engineering and Technology Edition), 2021, 51(5): 1887-1896.

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项目	数值
配套动力/kW	≥100
作业幅宽/mm	2200
纯工作时间生产率/（hm²·h^-1）	0.5~1.2
工作状态外形尺寸/（m×m×m）	6.3×2.64×4.85
切断长度/mm	5~50
漏捡率/%	≤1
揉搓率/%	≥93
喂入量/（kg·s^-1）	3
结构质量/kg	1650

v_w	k
v_w	2	3	4	6	12
Ⅰ	38.1	25.4	19.1	12.7	6.4
Ⅱ	50.7	33.8	25.4	16.9	8.5
Ⅲ	67.2	44.8	33.6	22.4	11.2

v_w	k
v_w	2	3	4	6	12
Ⅰ	37.5	25.7	19.5	16.3	8.7
Ⅱ	50.5	34.2	25.8	17.9	9.6
Ⅲ	67.5	45.3	31.6	22.4	13.9

Design of 4QJ⁃3 type pickup header of silage oat

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