Abstract

An all-terrain crane is a lifting machine that can simultaneously complete vertical lifting for cargoes and horizontal movement of machinery. There are boom structure combinations up to more than 10 thousand kinds when an all-terrain crane works, so it is very difficult to calculate the performance of the arm frame considering all working conditions and the stability of the whole machine, thus the workload of making performance tables is enormous and it is very difficult in actual operation. Therefore, in order that making crane performance tables becomes more reliable and efficient, applying object-oriented programming techniques to making crane performance tables and automatic document output of performance tables are studied in this paper, which can greatly improve the efficiency of development of new products for all-terrain cranes.

Highlights

  • Larger all-terrain cranes are increasing with the development of oil industry, chemical industry and wind power industry in recent years, at the same time completing steadily vertical lifting for cargoes and realizing safely horizontal movement of machinery put forward to higher requirements to working performance of all-terrain cranes

  • Because the format of the structural design calculation reports is relatively fixed, this paper is based on the latter approach, the ANSYS analysis results and final results are outputted to calculation reports in WORD document formats or performance tables of all-terrain cranes by using VB programming, which is shown in figure 1

  • Working condition contents of calculating the performance tables include mainly the combination form of arm frame structures while an all-terrain crane works, the load, the lifting rope ratio and so on, in this paper, the parameters of the working conditions are located mainly through the bookmark, results are outputted at the specified location and the parameters are shown in figure 4

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Summary

Introduction

Larger all-terrain cranes are increasing with the development of oil industry, chemical industry and wind power industry in recent years, at the same time completing steadily vertical lifting for cargoes and realizing safely horizontal movement of machinery put forward to higher requirements to working performance of all-terrain cranes. This paper aimed to carry out a research on its structural performance based on the method of theoretical calculation and finite element analysis because of the huge lifting weight and complex structure of large-tonnage gantry cranes and in order to effectively design and review it, which verified that the method of finite element is an effective way to find a real dangerous cross-section [1]. A nonlinear structure analysis by the finite element analysis was carried out to investigate the failure reason of an all-terrain crane telescopic boom, an overall simplified model consisting of telescopic boom and luffing vice arm was established by beam element, and analyzed using geometric nonlinear static method. Programming Implementation of Nonlinear Analysis in any Working Condition on an All-Terrain Crane Boom Structure

Program Development on Office Automation of Oriented Engineering
Components of Boom Structure
Structural Calculation Working Condition Parameters
Finite Element Analysis of Boom Structure
Crane Performance Tables Programming
The Performance Calculation of All-Terrain Cranes
Tension Control Conditions of Super Lifting Ropes
Comparison of Performance Results
Performance Tables Generation of All-Terrain Cranes
Conclusions
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