【摘要】 以臂架总长为37m的某改型水泥混凝土泵车为研究对象,对其进行了应力测试,得到该泵车的一阶自振频率、系统激扰频率、各个工况的动应力变化范围及响应频率,结果表明,泵车的振动性能有了明显的改进,液压冲击显著减小。更多还原

【Abstract】 The study object of this paper is a type of improved concrete pump whose arm is 37 meters long.Its stress is tested,and the first natural frequency,system exciting interference frequency,range of dynamic stress in all the working conditions and response frequency of the pump vehicle are obtained. Through analyzing and comparing the experimental results of the prototype of the pump vehicle,it is proved that the improvement of this product is successful.更多还原