CAJ | 학술논문

为解决动臂斗杆复合动作时动臂无法提升、合理分配多路阀内流量的问题，文章设计了一种节流阀，采用CFD软件对动臂联和斗杆联进行流场仿真，然后采用AM ESim仿真最终确定结构参数。研究表明，采用新型节流阀后，动臂油缸与斗杆油缸压差变小，并且可以通过改变优先节流孔的尺寸来调节压力分布，从而解决流量分配问题。通过对动臂斗杆复合动作协调性研究及实验验证，最终确定所设计的节流阀优先节流孔面积为2.457 mm2，等效直径为1.77 mm ，满足实际挖掘复合动作时动臂提升要求。
위해결동비두간복합동작시동비무법제승、합리분배다로벌내류량적문제，문장설계료일충절류벌，채용CFD연건대동비련화두간련진행류장방진，연후채용AM ESim방진최종학정결구삼수。연구표명，채용신형절류벌후，동비유항여두간유항압차변소，병차가이통과개변우선절류공적척촌래조절압력분포，종이해결류량분배문제。통과대동비두간복합동작협조성연구급실험험증，최종학정소설계적절류벌우선절류공면적위2.457 mm2，등효직경위1.77 mm ，만족실제알굴복합동작시동비제승요구。
In order to solve the problem of boom lifting when boom and arm are going on compound movements ,and solve the distribution problem of flow quantity in main control valve ,a throttle valve is designed ,the flow fields of boom and arm are simulated by using computational fluid dynamics (CFD) and the structural parameters are determined by using AMESim software .It is found that the new throttle valve can decrease the pressure difference between boom cylinder and arm cylinder ,and the problem of flow distribution can be solved by changing the priority orifice size to regulate pressure distribution .Through the research and experiments on the multi‐operational coordination of boom and arm ,the area of priority orifice of throttle valve is ultimately determined as 2.457 mm2 and the equiva‐lent diameter is 1.77 mm ,meeting the requirements of boom lifting in actual excavation .