Transactions of Materials and Heat Treatment

Title：Characteristics analysis on preload structure for lower beam of double-column hydraulic press

Authors： Luan Dawei1 2 3 Jia Yun1 2 3 Yang Jin4 Ma Xuepeng1 2 3 Zhang Hongfei1 2 3 Li Jing5

Unit： 1.Lanzhou LS Heavy Machinery Co. Ltd. 2.Key Laboratory of Intelligent Control of Metal Plastic Forming Equipment Gansu Province 3.Gansu Large Fast Forging Hydraulic Equipment Technology Research Center 4.School of Mechanical Engineering Lanzhou Jiaotong University 5.Lanzhou LS Energy Equipment Enigneering Research Institute Co. Ltd.

KeyWords： hydraulic press combined lower beam preload force joint surface slit

ClassificationCode：TG315

year,vol(issue):pagenumber：2024,49(8):167-173

Abstract：

Aiming at the slit problem of joint surface for combined lower beam of large-scale rapid forging hydraulic press, the preload structure of combined lower beam was theoretically analyzed, proposed the preload idea that the pull rod is perpendicular to the joint surface of lower beam, and the advantages and disadvantages of the preload method that the pull rod is along the workbench direction were compared. Then, by analyzing the force situations of the mechanism under the normal load and reaming working conditions, a simplified mechanical model of combined lower beam was established, and the calculation methods for the preload force of combined lower beam pull rod under two working conditions was obtained. Furthermore, the preload force of lower beam pull rod and the slit of joint surface under two working conditions were analyzed by the finite element method. The calculation results show that under the two working conditions, the preload method that the combined lower beam perpendicular to the joint surface is adopted, and the structural strength and stiffness as well as the slit of joint surface meet the requirements, which verifies the rationality of the theoretical analysis on the preload force, and provides a new idea and method for the preload force structure design of combined lower beam for large-scale rapid forging hydraulic press.

Funds：

作者简介：栾大为（1987-），男，学士,工程师 E-mail：752317245@qq.com 通信作者：贾鋆（1983-），男，学士，高级工程师 E-mail：lsjiayun@sina.cn

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