Transactions of Materials and Heat Treatment

Title：Research on improvement of hydraulic impact on forging manipulator cart walking system

Authors： Zhao Meixiang1 2 3 4 Liu Wei1 2 3 4 Zhang Kangning1 2 3 4 Wang Jinpeng5 Shang Yingjun1 2 3 4 Cao An′ning1 2 3 4

Unit： 1.Xi′an LS Heavy Machinery Co. Ltd. 2.Lanzhou LS Heavy Machinery Technology Co. Ltd. 3. Gansu Metal Plastic Forming Equipment Intelligent Control Laboratory 4.Gansu Large Fast Forging Hydraulic Equipment Engineering Technology Research Center 5.Lanzhou LS Energy Equipment Engineering Research Institute Co. Ltd.

KeyWords： forging manipulator cart walking connecting solenoid valve hydraulic impact stability positioning accuracy compensation control strategy

ClassificationCode：TH137

year,vol(issue):pagenumber：2023,48(12):206-211

Abstract：

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.

Funds：

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

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