机电工程技术2024，Vol.53Issue(11)：254-258,5.DOI:10.3969/j.issn.1009-9492.2024.11.054
双平行四边形联动护理床的设计与分析
Design and Analysis of a Double Parallelogram Linked Nursing Bed
摘要
Abstract
For the problem that the elderly people with self-care ability living alone have difficulty in getting into and out of bed,an elderly care bed with one-touch back lifting and leg bending function is designed.A linkage structure of a double parallelogram mechanism is designed,and the relationship between the angular velocity and angular acceleration of the backrest mechanism and the motion of the electric actuator is derived by applying the analytical method and Euler's formula,and the velocity trend of the backrest mechanism is plotted by using MATLAB when the electric actuator moves at a uniform speed of 8 mm/s,i.e.,the angular velocity and angular acceleration of the backrest lifting angle change very smoothly and steadily from 0°to 54°.From 54°to 73°limit position,the change is slightly larger,but the motion curve is smooth without obvious sudden change and break point,indicating that there is no large impact on the elderly care bed.The motion is verified in Adams,and there is no abrupt change in start-up,stable operation and stop.And the safety stability analysis is conducted in ANSYS,and it is concluded that its Q235 structure under the thickness structure strength is reasonable.Finally the physical prototype test structure to verify the elderly bed can be completely easy to lie and stand switch,laying the foundation for further development in the future.关键词
护理床/平行四边形机构/角速度/运动学仿真/有限元分析Key words
nursing bed/parallelogram mechanism/angular velocity/kinematic simulation/finiteelement analysis分类
信息技术与安全科学引用本文复制引用
赵凯杰,罗义,肖军胜,黄伟,刘怀粤..双平行四边形联动护理床的设计与分析[J].机电工程技术,2024,53(11):254-258,5.基金项目
国家级大学生创新创业训练计划(201910538001) （201910538001）
