In order to improve ambulance stretcher lying ride comfort, according to the vibration characteristics of the supine body vibration response characteristics and automotive suspension systems, the structure parameters ambulance stretcher vibration isolation system were optimized. Stretcher vibration isolation system is optimized for the new design to have better vibration isolation and damping effect, the vibration acceleration mean square value decreased significantly.

For transporting the sick and wounded to the main function of the ambulance, the ride is an important performance indicators. Ask for the ambulance when traveling to minimize road roughness caused by vibration and shock. Ensure safe and rapid delivery of the sick and wounded, while the wounded feel comfortable and stable. In order to improve the sick and wounded from the fundamental transport ride. Ambulance should use special chassis. As China's auto industry started late, light vehicle research and development is not enough, the ambulance has not yet formed the required special chassis series. Stage production of light trucks or ambulances basically off-road vehicle chassis. Thus, the development stretcher damping device became the main way to improve the riding comfort of transporting the sick and wounded. At present, most of the ambulance stretcher suspended rigid support, there is no damping facility, or although a resilient support, but because of the mechanical parameters of vibration isolation system of choice is not reasonable and therefore poor ride comfort lying stretcher. According to the vibration characteristics of the supine body vibration response characteristics and automotive suspension systems, using mathematical optimization method, the structural parameters of the ambulance stretcher vibration isolation system to optimize the design, thus effectively improving the ride comfort of lying on a stretcher,

In the actual design, the system is difficult to accurately achieve optimal parameter values can only be based on the actual structure and existing materials, technology and other conditions within a certain range close to the optimal value, the system tends to optimal vibration isolation performance. Optimized design allows ambulance stretcher after a recumbent human body system at the centroid vertical acceleration mean square value decreased 40.7%, about its centroid angle longitudinal vibration angular acceleration mean square value decreased by 55.7%, to improve the stretcher ride lying comfort.