双转向器合流式全液压转向系统特性分析  

Characteristic Analysis of the Full Hydraulic Steering System with Double Steering Units Confluence

作　　者：苏晨 刘志怀[3] 

机构地区：[1]河南工学院汽车工程系,河南新乡453003 [2]哈密豫新能源产业研究院有限责任公司,新疆哈密839001 [3]河南理工大学,河南焦作454150

出　　处：《机械设计与制造》2018年第2期167-170,共4页Machinery Design & Manufacture

基　　金：河南省高等学校重点科研项目(15B520006)

摘　　要：为了解决全液压转向系统在大吨位自卸车上极有可能出现不能转向或者转向发沉的问题,基于现有的流量放大全液压转向系统结构特点,提出一种双转向器合流方案。选用排量较小的两组全液压转向器OSPBX LS控制一个流量放大器OSQB合流工作。基于AMESim建立系统的仿真模型,将新方案与原有设计方案进行对比,并分析转向负载和入口流量变化对系统响应的影响;基于液压转向系统试验台对方案可行性进行验证。结果表明:使用双转向器的模型在方向盘转角输入斜坡信号时,各参数均趋于稳定;影响双转向器系统性能的因素主要还是方向盘的转速和负载,从而说明负荷传感转向系统具有很好的性能,其能保证转向系统的流量不受发动机转速和负载的影响;试验分析结果表明了该方案的可行性。In order to solve the problem that the full hydraulic steering system cannot turn or turn sinking in the large tonnage dump truck, a double diverter convergence scheme is proposed based on the existing structural characteristics of the full hydraulic steering system Selection of two smaller sets of full hydraulic diverter OSPBX LS control a flow amplifier OSQB combined work. Based on the AMESim simulation model, the new scheme was compared with the original design scheme, and the influence of the steering load and the inlet flow rate on the system response was analyzed. The feasibility of the scheme was verified based on the hydraulic steering system test bed~ The results show that the parameters of the double steering system are mainly the speed and load of the steering wheel, which indicates that the load sensing steering system is very good when the model of the double diverter is used to input the slope signal in the steering wheel angle. This can ensure that the flow of the steering system is not affected by the engine speed and load. The test results show the feasibility of the scheme.

关 键 词：双转向器合流 全液压转向系统 模型 特性 试验 

分 类 号：TH16[机械工程—机械制造及自动化] U463.4[机械工程—车辆工程]