锻压技术

锻造操作机大车行走系统液压冲击改进研究

英文标题：Research on improvement of hydraulic impact on forging manipulator cart walking system

作者：赵梅香1 2 3 4 刘威1 2 3 4 张康宁1 2 3 4 王金鹏5 尚英军1 2 3 4 曹安宁1 2 3 4

单位：1.西安兰石重工机械有限公司 2.兰州兰石重工有限公司 3.甘肃省金属塑性成型装备智能控制重点实验室 4.甘肃省大型快锻液压设备技术创新中心 5.兰州兰石能源装备工程研究院有限公司

分类号：TH137

出版年,卷(期):页码：2023,48(12):206-211

摘要：

提出了一种在锻造操作机大车行走系统液压马达进出油口处设置一个联通电磁阀的改进方法，并结合联通电磁阀补偿控制策略，避免了因马达高压腔油压过高对马达造成的损伤，也避免了低压腔真空对马达的破坏，从而实现了主动控制两腔的压力冲击；并通过AMESim仿真平台对该改进方法进行仿真分析及对比论证，进一步了解了联通电磁阀的实时工作状态、马达A/B口的压力变化、大车行走速度和位移的工作曲线以及研究对象的控制机理。结果表明：在马达A/B口设置联通电磁阀，并采用联通电磁阀补偿控制策略后大车行走系统的定位精度更高、稳定性更高，并且减少了液压冲击和气蚀。

An improved method of setting a connecting solenoid valve at the oil inlet and outlet ports of hydraulic motor for forging manipulator cart walking system was proposed, and combined with the compensation control strategy of connecting solenoid valve, the damage to the motor caused by the high pressure in the high pressure cavity of motor was avoided, and the damage caused by the vacuum in the low pressure cavity was avoided too, so the pressure impact of the two cavities was controlled actively. The improved method was simulated and compared by AMESim simulation platform, and the real-time working state of connecting solenoid valve, the pressure change at the A/B port of motor, the working curves of walking speed and displacement for cart, and the control mechanism of the research object were further understood. The results show that，after setting a connecting solenoid valve at the A/B port of motor，and adopting the compensation control strategy of connecting solenoid valve, the positioning accuracy and stability of the cart walking system are higher, and the hydraulic impact and cavitation are reduced.

基金项目：

作者简介：赵梅香（1987-），女，硕士，工程师 E-mail：1518983330@qq.com

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