套筒伸缩摆缸式液压马达磨损故障机制分析
发布时间:2019-01-21 07:24
【摘要】:某型套筒伸缩摆缸式液压马达在临界转速附近时容易在偏心轴表面产生磨损故障,影响液压马达的性能与寿命。为研究该液压马达的磨损故障机制,建立其偏心轴和单缸的动力学模型,并对油缸在动态时的受力进行分析。通过Matlab仿真验证了当液压马达转速足够大时,油缸的负加速度引起的惯性力超过了弹簧的弹力和外载荷及油缸自重的合力,油缸就会瞬间脱离偏心轴表面,引起"腾跳"冲击和振动,从而验证了液压马达在临界转速附近有产生磨损的可能性。
[Abstract]:It is easy to cause wear failure on the surface of eccentric shaft when a type of hydraulic motor with telescopic swinging cylinder is in the vicinity of critical speed, which affects the performance and life of hydraulic motor. In order to study the wear failure mechanism of the hydraulic motor, the dynamic models of eccentric shaft and single cylinder are established, and the dynamic force of the cylinder is analyzed. The Matlab simulation shows that when the speed of the hydraulic motor is large enough, the inertia force caused by the negative acceleration of the cylinder exceeds the spring's elastic force, the external load and the combined force of the cylinder's weight, and the cylinder will break away from the surface of the eccentric shaft instantly. It is proved that the hydraulic motor has the possibility of wear and tear near the critical speed.
【作者单位】: 华南理工大学机械与汽车工程学院;顺德中意液压有限公司;
【分类号】:TH137.51
[Abstract]:It is easy to cause wear failure on the surface of eccentric shaft when a type of hydraulic motor with telescopic swinging cylinder is in the vicinity of critical speed, which affects the performance and life of hydraulic motor. In order to study the wear failure mechanism of the hydraulic motor, the dynamic models of eccentric shaft and single cylinder are established, and the dynamic force of the cylinder is analyzed. The Matlab simulation shows that when the speed of the hydraulic motor is large enough, the inertia force caused by the negative acceleration of the cylinder exceeds the spring's elastic force, the external load and the combined force of the cylinder's weight, and the cylinder will break away from the surface of the eccentric shaft instantly. It is proved that the hydraulic motor has the possibility of wear and tear near the critical speed.
【作者单位】: 华南理工大学机械与汽车工程学院;顺德中意液压有限公司;
【分类号】:TH137.51
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