锻压技术

预应力钢丝缠绕“正交预紧机架”结构力学性能分析

英文标题：Mechanical properties analysis on orthogonal preload frame structure with pre-stressed wire-wound

作者：王文杰林峰张磊王欣

单位：清华大学

分类号：

出版年,卷(期):页码：2016,41(1):93-101

摘要：

重型多向模锻液压机机构设计中的结构独立性与力学独立性互相矛盾，已成为限制多向模锻液压机最大吨位的瓶颈，而预应力钢丝缠绕正交预紧机架结构为解决重型多向模锻液压机承载结构的设计矛盾提供了一种新形式。针对这种新结构，以90 MN单缸双牌坊多向模锻液压机力学性能计算与试验为例，提出预应力钢丝缠绕正交预紧机架的力学分析方法，结合预应力钢丝缠绕正交预紧机架在工程应用中遇到的实际问题分析其在三种状态(预紧状态、工作状态、合成状态)时的力学性能，得出在一定的预紧系数下，该结构具有刚度大、承载能力强及整体性好等优点。因此，预应力钢丝缠绕正交预紧机架结构能够满足重型多向模锻液压机承载结构的使用要求。

Heavy multi-ram forging hydraulic press mechanism design is of a contradiction between the independence of structure and the independence of force, which becomes the bottleneck of limiting multi-ram forging hydraulic press tonnage. However, the orthogonal preload frame structure with pre-stressed wire-wound provides a new form to solve the design contradiction of heavy multi-ram forging hydraulic press bearing structure. For this new structure, the mechanical analysis method for the orthogonal preload frame structure with pre-stressed wire-wound was put forward by the experiment and mechanical properties analysis for 90 MN single cylinder double arch multi-ram forging hydraulic press, and the mechanical properties in three stress states (the preload state, the working state and the synthesis state) combining with the actual problem of the orthogonal preload frame structure with pre-stressed wire-wound encountered in the engineering application were analyzed. The results prove that orthogonal preload frame structure has the advantages of large stiffness, high strength and excellent integrity under certain preload coefficient. Therefore, the orthogonal preload frame structure with pre-stressed wire-wound can satisfy the usage requirements of heavy multi-ram forging hydraulic press bearing frame.

基金项目：

国家科技重大专项(2012ZX04010082)；国家863计划(2012AA040202)

王文杰(1985-)，男，博士研究生

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