期刊论文

Design and experiment of rapeseed circulation chain cutter

中文

湖南农业大学学报(自然科学版)

1007-1032

2019

45

4

440-443

10.13331/j.cnki.jhau.2019.04.017

18A107:湖南省教育厅重点项目 2016-258:长沙市科技局项目

本校为第一机构

针对传统往复式切割器切割惯性大、导致割台振动大的问题,设计了一种油菜循环链式切割器。该切割器主要由动弯刀、上定刀、下定刀、动力及传动机构组成,采用渐开线设计动弯刀刃口曲线,中间动弯刀配合上、下定刀实现单向循环双支撑切割。结合自制的切割试验台,开展切割速度、切割高度对切割力和切割功率的影响试验。结果显示:切割力和切割功率随切割速度增大而减小,切割力与切割高度拟合方程为y = – 0.058 8x+158.17,切割功率与切割高度的拟合方程为y=– 0.085 9 x+308.98;田间切割试验结果表明:切割速度为2 m/s、离地高度400 mm时切割效果好,茎秆切口整齐,无漏割、堵刀、拔秆现象。

A rapeseed circular chain cutter was designed to solve the problem of large inertia and the header vibrating for the traditional reciprocating cutter. The cutter is mainly composed of a dynamic bending knife with involute shape, an upper and a lower fixed knife, a power and a transmission. An intermediate moving bending knife cooperates with the upper and lower fixed knife to realize a one-way circulating cutting with double supporting. Combined with the self-made cutting test bench, the effects of cutting speed and cutting height on the cuttin...