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一种悬臂式检修平台的设计
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作者 李建柠 《汽车实用技术》 2021年第21期169-172,共4页
车身厂装焊车间某车型顶盖生产线提升设备配重系统安装于二层钢结构平台,平台面积较小,配重系统自身高度较大,日常维保时需支立人字梯辅助作业,检修作业效率低下,作业风险多。为解决现场维保作业条件困难问题,需为配重系统增设检修平台... 车身厂装焊车间某车型顶盖生产线提升设备配重系统安装于二层钢结构平台,平台面积较小,配重系统自身高度较大,日常维保时需支立人字梯辅助作业,检修作业效率低下,作业风险多。为解决现场维保作业条件困难问题,需为配重系统增设检修平台。根据现场工况及作业空间限制,检修平台采用悬臂式设计。为避免焊接对配重系统钢结构产生热影响,检修平台和配重框架采用摩擦副连接。为保证安全性和可靠性,强度校核完毕后,再在现场实施。 展开更多
关键词 固定工业钢平台 检修平台 悬臂式设计 强度校核
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深基坑围护工程中悬臂式排桩的设计与施工 被引量:4
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作者 文振东 张克纯 《广西大学学报(自然科学版)》 CAS CSCD 2004年第z1期102-105,共4页
通过某工程实例介绍了深基坑围护工程中悬臂式排桩的设计与施工 .建立了排桩设计的力学模型和计算方法 。
关键词 深基坑 悬臂支护结构 设计与施工 钻孔灌注桩
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方向公差对尺寸链分析的影响
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作者 宋广迎 丁国栋 +1 位作者 徐庆增 魏红玲 《内燃机与动力装置》 2019年第3期66-70,78,共6页
分析因装配平面倾斜而引起的零件旋转问题,通过公式推导及仿真验证,结果证明,采用一维线性极值算法的尺寸链分析具有很大的局限性。考虑方向公差的重要性,针对悬臂式设计的零件,以某机型进气管为例,证明忽略方向公差导致分析出的偏差比... 分析因装配平面倾斜而引起的零件旋转问题,通过公式推导及仿真验证,结果证明,采用一维线性极值算法的尺寸链分析具有很大的局限性。考虑方向公差的重要性,针对悬臂式设计的零件,以某机型进气管为例,证明忽略方向公差导致分析出的偏差比实际小,可能造成后续零件难以装配及零件断裂等故障,为零件的合理设计提供理论依据。 展开更多
关键词 尺寸链分析 极值法 方向公差 悬臂式设计
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Study on the Design Method of the Jack-up's X-Type Cantilever Allowable Load Nephogram 被引量:1
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作者 Yazhou Zhu Chengmeng Sun +2 位作者 Hongde Qin Bin Jiang Yansong Fan 《Journal of Marine Science and Application》 2014年第3期315-320,共6页
The extending of a cantilever and transverse moving of a drilling floor enable the jack-up to operate in several well positions after the Jack-up has pitched. The cantilever allowable load nephogram is the critical re... The extending of a cantilever and transverse moving of a drilling floor enable the jack-up to operate in several well positions after the Jack-up has pitched. The cantilever allowable load nephogram is the critical reference which can evaluate the jack-up's drilling ability, design the cantilever structure and instruct a jack-up manager to make the operations safe. The intent of this paper is to explore the interrelationships between the cantilever position, drilling floor and the loads including wind force, the stand set-back weight etc., through analyzing the structure and load characteristics of the x-type cantilever and the simplified mechanics model with the restriction of the maximum moment capacity of the cantilever single side beam. Referring to several typical position designs load values, the cantilever allowable load nephogram is obtained by using the suitable interpolation method. The paper gives a method for cantilever allowable load design, which is proved reliable and effective by the calculation example. 展开更多
关键词 JACK-UP cantilever expand cantilever allowable loadnephogram drilling ability x-type cantilever
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Theoretical analysis and verification of uncertainty of measurement on a cantilever coordinate measuring machine
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作者 ZHANG Hai-tao LIU Shu-gui +1 位作者 LI Xing-hua SU Zhi-kun 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2017年第4期314-320,共7页
A cantilever coordinate measuring machine(CCMM)is proposed according to the in-situ measurement requirement of workpieces with complex structures limited by the finite space of the5-axes computerized numerical control... A cantilever coordinate measuring machine(CCMM)is proposed according to the in-situ measurement requirement of workpieces with complex structures limited by the finite space of the5-axes computerized numerical control(CNC)processing site.Factors affecting uncertainty of measurement(UM)are classified and analyzed on the basis of uncertainty evaluation criteria,and the estimation technique of UM for measuring systems is presented.UM of the CCMM is estimated from the factors such as temperature,error motions as well as the mechanism deformations.Measurement results show that the actual measurement error is smaller than that of measurement requirement. 展开更多
关键词 cantilever coordinate measuring machine (CCMM) structure design computerized numerical control machine estimation of uncertainty of measurement
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