某塔架回转平台力学特性仿真分析
Mechanical Properties' Simulation Analysis of a Tower Slewing Platform
李利群 1黄凯 1相有桓 1刘汉滨1
作者信息
- 1. 中国人民解放军63729部队,太原,030031
- 折叠
摘要
为研究某塔架回转平台结构的安全性,按照实际尺寸和工况建立了回转平台的三维数值模型,仿真分析了结构的受力情况、不同风速下液压系统的压力裕度、升降平台数量的影响三方面与实际应用密切相关的问题.应用工况下,结构最大应力为223.98MPa,安全系数ns为1.58.按最不利的风载方向和迎风面积计算,许用风速下打开平台时,液压系统至少需要5.40MPa的压力,压力裕度为2.96.当升降平台数量达到理论最大值9层时,ns为1.35,满足要求.计算结果验证了回转平台主体结构的安全性,可以为回转平台的使用提供参考.
Abstract
To study the safety of a tower slewing platform structure,a three dimensional numerical model is established with actual sizes and operating conditions. The structural force,pressure margin of hydraulic system with different wind loads,and the influence of lift platforms' amount are researched which are concerned closely in use. In working condition,the maximum stress of structure is 223.98MPa,and the structure safety factor is 1.58. The pressure margin of hydraulic system is calculated with the worst wind direction and the maximum windward area. When the platform is opened with permitted wind speed,the hydraulic system pressure can not be lower than 5.40MPa,and the pressure margin is 2.96. The structure safety factor is 1.35 when the number of lift platforms is 9. According to the results of simulating calculation,the security of the slewing platform can be confirmed. The simulating model can provide a reference for the slewing platform's application.
关键词
数值计算/回转平台/风载荷/液压系统/轴承Key words
numerical calculation/slewing platform/wind load/hydraulic system/bearing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据