锻压技术

双柱液压机下横梁预紧结构特性分析

英文标题：Characteristics analysis on preload structure for lower beam of double-column hydraulic press

作者：栾大为1 2 3 贾鋆1 2 3 杨晋4 马学鹏1 2 3 张鸿飞1 2 3 李晶5

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

分类号：TG315

出版年,卷(期):页码：2024,49(8):167-173

摘要：

针对大型快速锻造液压机组合下横梁接合面开缝问题，对组合下横梁预紧结构进行了理论分析,并提出拉杆垂直于下横梁接合面的预紧思路，对比了其与拉杆沿工作台方向预紧方法的优劣。通过分析正载和扩孔工况下机构的受力情况，建立组合下横梁的简化力学模型，得出两种工况下组合下横梁拉杆预紧力的计算方法。利用有限元方法分析了两种工况下下横梁拉杆预紧力及接合面的开缝情况，计算结果表明：在两种工况下，组合下横梁采用垂直于接合面的预紧方法，其结构强度、刚度及接合面开缝均满足要求，验证了预紧力理论分析的合理性，为大型快速锻造液压机组合下横梁的预紧力结构设计提供了新的思路和方法。

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.

基金项目：

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

参考文献：

[1]高峰，郭为忠，宋清玉，等. 重型制造装备国内外研究与发展 [J].机械工程学报，2010，46（19）:92-107.

Gao F，Guo W Z，Song Q Y，et al. Current development of heavy-duty manufacturing equipments [J]. Journal of Mechanical Engineering，2010，46（19）:92-107.

[2]陈柏金. 快速锻造液压机组 [M].北京：机械制造出版社，2022.

Chen B J. Fast Forging Press [M].Beijing:Machinery Industry Press， 2022.

[3]郭宝峰，于琳琳，金淼，等. 预应力组合下横梁临界预紧力影响因素研究 [J].中国机械工程，2013，24 (19): 2567- 2572.

Guo B F，Yu L L，Jin M，et al. Research on influence factors of critical pretension force in pre-stressed assembled lower beam [J].China Mechanical Engineering，2013，24 (19): 2567-2572.

[4]董晓传，金淼，姚阳，等. 基于等效梁长法的组合深梁临界预紧力计算模型[J]. 机械工程学报，2015，51 (15): 46-52.

Dong X C，Jin M，Yao Y，et al. Calculation model of critical pre-load of prestressed composite deep beam based on the method of equivalent-beam-length [J]. Journal of Mechanical Engineering， 2015，51 (15): 46-52.

[5]董晓传，金淼，张杰，等. 基于叠加修正法的承弯组合结构临界预紧力研究 [J].中南大学学报(自然科学版)，2014，45 (10): 3392-3397.

Dong X C，Jin M，Zhang J，et al.Critical preload of bearing-bending composite structure based on superposition-correction approach [J].Journal of Central South University(Science and Technology)，2014，45 (10): 3392-3397.

[6]刘东林,刘艳妍. 偏载对大型双柱预应力机架的影响[J]. 锻压技术,2022,47(5):175-180.

Liu D L，Liu Y Y. Influence of eccentric load on large double-column prestressed frame[J]. Forging & Stamping Technology,2022,47(5):175-180.

[7]董晓传. 大型液压机组合部件的临界预紧力研究 [D]. 秦皇岛: 燕山大学，2015.

Dong X C. Study on Critical Preload of Prestressed Composite Structures of Large Hydraulic Press [D]. Qinhuangdao: Yanshan University，2015.

[8]金淼，董晓传，邹宗园，等. 给定预紧力下组合机架的上限载荷的计算 [J].中国机械工程，2012，23 (20): 2476-2480.

Jin M，Dong X C，Zou Z Y，et al. Calculation of the upper-bound load for composite frame hydraulic press under the given preload [J]. China Mechanical Engineering，2012，23 (20): 2476-2480.

[9]马辉，能海强，宋溶泽，等.两种工况下锻压组合机架的接触特性分析[J]. 东北大学学报(自然科学版)，2013，34 (9): 1300-1304.

Ma H，Nai H Q，Song R Z，et al. Contact characteristics analysis of combination frame of forging press under two conditions [J]. Journal of Northeastern University(Natural Science)，2013，34 (9): 1300-1304.

[10]刘富文，周威豪，李清野，等. 30 MN三梁四柱式双动拉伸液压机机身的有限元分析及轻量化设计[J]. 锻压技术，2023，48（2）：161-167.

Liu F W，Zhou W H，Li Q Y，et al. Finite element analysis and lightweight design on 30 MN three-beam and four-column double-action tensile hydraulic press body [J]. Forging & Stamping Technology，2023，48（2）：161-167.

[11]俞新陆. 液压机的设计与应用 [M]. 北京：机械工业出版社，2007.

Yu X L. The Design and Application of Hydraulic Press [M]. Beijing：China Machine Press，2007.

[12]JB/T 12229—2015, 油泵直接传动双柱斜置式自由锻造液压机[S].

JB/T 12229—2015, Double-Column oblique type open-die forging hydraulic press with direct drive of oil pump[S].

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