榨菜缩短茎的切割力学特性

doi:10.3969/j.issn.1004-1524.2021.10.18

浙江农业学报 ›› 2021, Vol. 33 ›› Issue (10): 1939-1945.DOI: 10.3969/j.issn.1004-1524.2021.10.18

榨菜缩短茎的切割力学特性

郑航(), 薛向磊, 俞国红^*()

浙江省农业科学院农业装备研究所,浙江杭州 310021

收稿日期:2021-04-19 出版日期:2021-10-25 发布日期:2021-11-02
通讯作者: 俞国红
作者简介:*俞国红,E-mail: Yuguohong@163.com
郑航(1993—),男,浙江龙游人,硕士,研究实习员,主要从事智能农机装备理论与设计研究。E-mail: Zhrory@126.com
基金资助:
浙江省科技计划(2020C26001)

Mechanical property of cutting shorten stems of mustard tuber

ZHENG Hang(), XUE Xianglei, YU Guohong^*()

Institute of Agricultural Equipment, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China

Received:2021-04-19 Online:2021-10-25 Published:2021-11-02
Contact: YU Guohong

摘要/Abstract

摘要：

为了获得榨菜缩短茎的最佳切割要素组合,在TMS-Pro质构仪上开展榨菜缩短茎切割的单因素试验和正交试验,以最大切割力和平均切割力为试验指标,探究刀刃类型、滑切角度、切割速度、切割方式对榨菜缩短茎切割过程中切割力的影响。结果表明:滑切角度对最大切割力和平均切割力影响显著(P<0.05),刀刃类型对平均切割力影响显著(P<0.05),锯齿刃比光刃省力。为有效降低最大切割力和平均切割力,榨菜缩短茎切割的参数宜确定为锯齿刃,滑切角度20°,切割速度80 mm·min^-1。此时,最大切割力为86.2 N,平均切割力为53.1 N。研究结果可为榨菜收获机的切割装置设计提供理论依据。

关键词: 榨菜, 力学特性, 缩短茎, 切割

Abstract:

In order to obtain best parameters for the cutting of shorten stems of mustard tuber, the single-factor experiments and orthogonal tests were carried out on the TMS-Pro texture analyzer. The maximum cutting force and the average cutting force were selected as test indexes, and the effects of cutter type, sliding angle, cutting speed and cutting direction on the cutting force during the cutting process of shorten stems of mustard tuber were analyzed.It was shown that the sliding angle had significant (P<0.05) effect on the maximum cutting force and the average cutting force. The cutter type had significant (P<0.05) influence on the average cutting force, and the sawtooth cutter was more labor-saving than the light cutter. The most labor-saving combination for cutting of shorten stems of mustard tuber was as follows: sawtooth cutter, sliding angle of 20°, and cutting speed of 80 mm·min^-1. Under this circumstance, the maximum cutting force was 86.2 N,and the average cutting force was 53.1 N. These findings could provide references for the design of the cutting device for shorten stems of mustard tuber.

Key words: mustard tuber, mechanical property, shorten stems, cutting

中图分类号:

S225.92

郑航, 薛向磊, 俞国红. 榨菜缩短茎的切割力学特性[J]. 浙江农业学报, 2021, 33(10): 1939-1945.

ZHENG Hang, XUE Xianglei, YU Guohong. Mechanical property of cutting shorten stems of mustard tuber[J]. Acta Agriculturae Zhejiangensis, 2021, 33(10): 1939-1945.

图/表 12

图1 试验仪器

Fig.1 Equipment for cutting test

图2 榨菜切割刀片图中从左到右刀片的滑切角度依次为0、10°、20°。

Fig.2 Cutters used in this experiment The sliding angle of cutters from left to right in the figure is 0, 10°, 20°, accordingly.

图3 榨菜示意图 H,茎瘤的纵向高度;L,茎瘤的横向直径;l,缩短茎长度;D,缩短茎直径。

Fig.3 Sketch of mustard tuber H, Height of stem tumor; L2, Width of stem tumor;l, Length of shorten stems; D, Width of shorten stems.

图4 切割方式示意图

Fig.4 Diagram of cutting methods

图5 滑切试验示意图

Fig.5 Diagram of sliding cut test

图6 榨菜切割试验专用夹具 1,刀片安装架;2,切割刀片;3,榨菜缩短茎;4,U形座,1;5,U形座2;6,机架。

Fig.6 Special fixture for cutting test 1, Blade mount; 2, Cutting blade; 3, Shorten stems of mustard tuber; 4, U-shaped seat 1; 5, U-shaped seat 2; 6, Frame.

表1 正交试验的因素与水平

Table 1 Factors and levels of orthogonal test

水平 Level	试验因素Experiment factor
水平 Level	A	B/(°)	C/(mm·min^-1)
1	光刃Light cutter	0	30
2	锯齿刃 Sawtooth cutter	10	80
3	—	20	120

图7 不同刀刃类型的切割力-位移曲线

Fig.7 Cutting force-displacement curves under different cutters

图8 不同滑切角度的切割力-位移曲线

Fig.8 Cutting force-displacement curves under different sliding angles

图9 不同切割速度的切割力-位移曲线

Fig.9 Cutting force-displacement curves under different cutting speeds

图10 不同切割方式的切割力-位移曲线

Fig.10 Cutting force-displacement curves under different cutting directions

表2 正交试验设计与结果

Table 2 Orthogonal test design and result

试验序号 Test number	试验因素Experiment factor			最大切割力 Maximum cutting force/N	平均切割力 Average cutting force/N
试验序号 Test number	A	B	C	最大切割力 Maximum cutting force/N	平均切割力 Average cutting force/N
1	1	1	1	131.6	84.2
2	1	2	2	107.9	72.4
3	1	3	3	100.8	60.5
4	1	1	2	125.6	82.3
5	1	2	3	113.6	71.6
6	1	3	1	105.1	64.3
7	2	1	3	119.7	69.2
8	2	2	1	94.3	60.5
9	2	3	2	86.8	53.5

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榨菜缩短茎的切割力学特性

Mechanical property of cutting shorten stems of mustard tuber

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