Dynamic Characteristic Analysis Of Flexible Attachment Boom Tower Crane

Boom tower crane is a large-scale outdoor work in construction machinery, tower craneboom is a combination of digestion and absorption of the introduction of foreign technology ondomestic experience in design and manufacture of switched back-up tower cranes, used inseveral ways. As the boom tower crane balance short arm can vary between15°-85°, ideal forintensive and narrow areas of construction, a unique construction capabilities. When the towercrane’s height exceeds the height of its independence, it must be attached to the device forreinforcement of the tower, the tower crane attachment fixed to the building. Tower craneattached to the device attached to a rigid and flexible attachment two, when the construction siteconditions, by objective factors, such as cooling tower construction, the longitudinal section forthe hyperbolic radius of the larger and varies with height.Such as the use of general rigidattachment, the device will not only greatly increase the cost and complexity of installation, thewall of the cooling tower will result in greater impact. Therefore, the cooling tower crane used inconstruction is usually attached to the tower attached to the flexible cooling tower attached to thewall of the flexible way.Researched the development state of large arm type tower crane at homeand abroad at present and analyzed the research status in this field at home and abroad, I have aclear idea about the purpose and significance of the subject project.Based on the kinetic theory and finite element analysis method, the use of largegeneral-purpose finite element analysis software ANSYS, the establishment of a flexible boomcrane attached to the machine’s finite element model, the model for static analysis and dynamicanalysis. Paper’s content: According to the crane dynamics theory, using ANSYS software, theestablishment of flexible boom crane attached to the whole finite element model, which includesbeam elements, beam elements and the mass element; model for static analysis of the greateststress and displacement; modal analysis has been the model of the first six natural frequenciesand mode shapes; model for transient analysis of the machine, get a flexible boom crane attachedto a non-working state conditions under the action of wind load displacement response curve andin the most significant incentives under the lifting load displacement response curve, thenon-working condition and lifting off the ground conditions the system response (includingstress and displacement).In short, flexible boom crane attached to the dynamic analysis, is the advanced design,analysis, applied to flexible boom crane attached to the design, for the design of economical,reliable, stable and high-performance flexible boom crane attached to provide strong tools andimplementation methods.