期刊论文

Design of hand-operated piggyback jaw gripper type simplified picker for pear

Li, L.

中文

农业工程学报

1002-6819

2019

35

1

39-45

10.11975/j.issn.1002-6819.2019.01.005

湖南省科技计划重点研发项目(2016NK2142) 湖南省高校科技创新团队资助项目(2014207).

本校为第一且通讯机构

针对梨采摘效率低且劳动强度大的问题,该文通过分析梨果实特征,并搭建剪切力测量平台,对不同品种和成熟度的梨进行果柄剪切试验,测得剪断果柄的最大剪切力为5.4 N;设计了一款操作简单且不伤果实的手动背负式梨采摘器,该手动背负式采摘器由操作执行机构通过拉索拉动采摘头,使夹爪和刀片先后动作,完成采摘;采摘完后,松开操作手柄,在复位弹簧的作用下,刀具和夹爪顺序动作,果实通过收集布袋落入果篮中;基于Recurdyn对采摘器关键部件进行仿真,得出剪切力平均为13.5 N,大于剪断果柄所需的剪切力;基于ANSYS软件对主要的受力杆件组进行强度分析,验证了所设计的采摘器强度满足要求;开展实地试验验证设计的...

In order to solve the problem of low efficiency and high labor intensity of pear picking, a hand-operated piggyback jaw type simplified pear picker was designed in this paper. The characteristics of pears were analyzed by selecting 3 kinds of pears commonly found in the market: 'Xuehua' pear, 'Yali' pear, and 'Apple-pear', the pear maturity was divided into A, B and C grades according to the fruit diameter size and the growth period. Referring to the previous research results on the shear mechanical properties of citrus and litchi fruit handles...