某履带式卫生急救车振动控制

Vibration Control for the Wounded-inside Tracked Emergency-ambulance

通过采取两级减振措施,有效控制了某履带式卫生急救车运送、急救伤病员途中从履带底盘到车厢底板、再到卧姿人体的振动传递,提高了伤病员的乘卧舒适性。结果表明:几种不同工况下,橡胶阻尼减振器的一级减振效率达到了61%～79%,零刚度减振器的二级减振效率达到了43%～79%;卧姿人体两次计权加速度均方根值介于0.322 m/s2至0.883 m/s2之间,乘卧舒适性等级分别为"舒适"、"比较舒适"和"基本舒适"。

The vibration transferring from track chassis to bottom of carriage and then to supine body was controlled effectively for the wounded-inside tracked emergency-ambulance by using two-grade damping device. And the riding comfort of the wounded was improved. The results show that the first grade damping efficiency is 61%-79 % and the second grade damping efficiency is 43 %-79 % under various road and speed conditions, the weighted mean square root of acceleration of the supine body is between 0.322 m/s2 and 0.883 m/s2, and the evaluation grade of the riding comfort is ＂Comfortable＂, ＂More Comfortable＂ and ＂Essentially Comfortable＂ respectively.