零差速式综合传动履带车辆的转向动态特性

Dynamic simulation of and experimentation with tracked vehicle hydrostatic steering characteristics of zero differential systems of a power shift steering transmission

针对履带车辆转向时的直驶滚动阻力、转向离心阻力、直驶加速阻力、转向刮土阻力和转向加速阻力等对转向动态特性的影响，以良好路面（如水泥路、农村公路）上的中心转向、液压转向调速系统工作压力和其最高安全压力关系研究为基础，采用零差速式液压转向综合传动，合理匹配转向传动机构，得到了能够保障车辆应对各种转向工况时的工作压力。试验表明：工作压力为最高安全压力的60％～80％时，可保障车辆具有良好的动态转向稳定性。

This research investigated problems influencing tracked vehicles steering dynamic characteristics, such as rolling resistance during straight driving, steering centrifugal resistance, acceleration resistance during straight driving, scratching soil resistance of steering. Based on research about the relationship between the hydraulic steering regulation speed system and its maximum stable work pressure when vehicles have central steering on good roads （such as cement and rural roads）, a zero differential hydraulic steering system of power shift steering transmission can ensure that vehicles maintain straight ahead stability through reasonably matching a steering drive system. The test indicates that vehicles have good dynamic characteristics when the work pressure accounted for 60% to 80% of the security work pressure.