| The crane robot mast is when the work is very important crane bearing parts, its mechanical properties of the normal work of the machine has an important influence. For static analysis of pillar, you need to consider the crane in different conditions possible maximum load and pillar strength and rigidity requirements. In fact, the door crane from the ground in lifting heavy lifting, and turn suddenly start-stop and hanging on air suddenly unload, luffing up brake condition, column will produce a significant impact, while in luffing and vibration rotation of goods of pillar swinging had great influence. These dynamic effect in actual calculation is through safety coefficient to consider, is actually so the dynamic model of the complicated simplified as relatively simple static model, and in some cases could not accurately reflect the mast structure stress essence. In the event, the dynamic calculation of static problem is transformed into the ask is the main reason:because dynamic load causes and influencing factors is more complex, and dynamic load accurate fitting is also very difficult. This paper just by afore-mentioned problems as a starting point, and the mechanical dynamics and finite element method as the theoretical basis, using ANSYS software robot to new plane door crane pillar in different working conditions is dynamics analysis, studied the dynamic characteristic of pillar and dynamic response laws.The main research work are as follows:1. ANSYS8.1 portal crane, using the pillar system is given, a finite element model established by finite element model plate unit, and the principle and step by APDL language can realize of parameterized modeling, easy to modify, facilitate management.2. the portal crane full set in the meanwhile side is placed inside and outside to maximum Angle pendulum and side is placed to maximum Angle two working condition, combined with static analysis theores and consider crane metal crane load carrying capacity, draw results.3. combining pillar dynamic behavior of the system, and study the modal situation, because few bands of natural frequency reference meaning little, so consider only take a few order before the main vibration type and strikeout diagram and inherent frequency. Theory combining with actual, according to the results of data analysis theory, the results of whether accord with actual situation, thus draws the authenticity and accuracy theoretical analysis for future research, lamilloy. We analyzed the new single arm frame multi-purpose portal crane pillar system with the most dramatically in luffing and brake goods in the swinging process, produce resonance phenomenon. And find out the reason of related provide avoid method.4. making luffing and two conditions after turning brake pressure detailed column load for future, excel form design work provides convenience.5. in luffing and of pillar system after turn these two conditions of brake using finite element analysis software ANSYS8.1 for transient dynamics analysis, its purpose is to make a new single arm frame multi-purpose portal crane turning the pillar system in luffing braking of braking, and after transient dynamic response, including move displacement, stress response simulation of convective and typical node of the dynamic stress time process curve, then the results are further research and that the relevant conclusions, obtain the general method analysis of these problems and rules.6. comparative statics results and transient dynamics research results, and that the relevant conclusions about the future related models, the design development plays a guiding role...
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