ZHANG Jian yun1, TAO Wei jun1, WU Wei bing2, BAI Hui fang3, JIA Yong xiang1

 

(1. School of Mechanical Engineering, NUST, Nanjing 210094, China;

 

2. First Engineering Branch of China Petroleum Pipeline Bureau, Langfang 123104, China;

 

3. School of Mechanical and Power Engineering, NUC, Taiyuan 030051, China)

 

 

Abstract: Aiming at the problems that it is difficult to take care of the long term bedridden patients and the elderly, a multi functional nursing bed, which is suitable for the health care for the patient, was designed and manufactured. Through summarizing the similar nursing bed equipment both home and abroad, a dedicated multi functional nursing bed using at home was proposed. By controlling four linear actuators to work in a coordinate mode, nursing bed′s functions of turning over and bed chair folding could be achieved. And through the feed screw drove by a DC motor, the nursing bed′s function of supplementary processing urination and defecation was realized. Moreover, the nursing robot′s mechanics for the folding process of post bedplate and the process of lifting the toilet was analyzed and the linear actuator′s axial force and motor driving torque was obtained through the simulating calculation. Finally, the prototype of the nursing bed was manufactured and its motion function experiments were done. The results indicate that the nursing bed can meet the design requirements and is suitable for taking care of patients and elderly.

 

Key words: multi functional nursing bed; health care; mechanical analysis; simulation