摘要
为了提高钳剪抓一体多功能属具中功能转换机构自锁性能的可靠性,研究了该机构在自锁状态下的接触性能,并基于测试条件设计了该机构的原始样机和测试样机,然后进行了测试研究。设计了功能转换机构的样机,提出了一种基于滑块-滑槽的自锁机构。在充分考虑样机自锁状态下的弹性变形、黏着、堆叠变形及滑动剪切的接触状态后,提出了新的接触模型。在此基础上,通过有限元分析研究了滑块-滑槽在接触区域的自锁状态和接触特性分布规律。设计了试验以验证模型及设计的可行性。结果表明,样机能够实现自锁且展现出良好的受力特性,另外,所提接触模型的最大剪切应力相对误差比传统模型低59.3%。
To improve the reliability of self-locked performances of the function transformation mechanisms in multi-functional clamp-shear-grab integrated attachment,the contact performance of the mechanisms under self-locked states was studied,and original prototype and test prototype of the mechanisms were designed based on test conditions,and then tests were conducted.Initially,the prototypes of function transformation mechanisms were developed,and a self-locked mechanism was proposed based on slidergroove structure.By thoroughly considering the elastic deformations,adhesions,pileup deformations,and sliding shear contact states under self-locked states,an innovative contact model was proposed.Based on these,the self-locked states and contact characteristic distributions of slider-groove in contact areas were studied through finite element analyses.Finally,experiments were designed to verify the feasibility of the model and design.Experimental results show that the prototype may achieve self-locked function and exhibits good mechanics performance,and the proposed contact model outperforms traditional model by 59.3%in terms of maximum shear stress relative error.
作者
王旭东
赵京
WANG Xudong;ZHAO Jing(College of Mechanical and Energy Engineering,Beijing University of Technology,Beijing,100124)
出处
《中国机械工程》
北大核心
2025年第9期2117-2125,2139,共10页
China Mechanical Engineering
关键词
多功能属具
自锁条件
受力特性
接触特性
multi-functional attachment
self-locked condition
mechanics property
contact property
作者简介
王旭东,男,1998年生,硕士研究生。研究方向为新型救援装备。E-mail:15726243965@163.com;通信作者:赵京,男,1961年生,教授、博士研究生导师。研究方向为人机交互、超冗余度机器人系统、异构机器人遥操作、智能救援装备、非标自动化设备。E-mail:zhaojing@bjut.edu.cn。
