Control Algorithm Of Superlift System For Large Tonnage Crawler Crane

Large tonnage crawler crane is used most widely as a flow-type special lifting equipment in the field of construction machinery. With the launch of a variety of large-scale construction projects, demand for large tonnage crawler cranes is increasing, in order to achieve improving lifting performance better, crawler crane increase Superlift System on the basis of the original equipment. Superlift System can take advantage of the bearing capacity of large tonnage crawler crane to improve utilization of large tonnage crawler crane and lifting performance greatly. large tonnage crawler crane’s boom combination is more complex with being equipped with Superlift System, requirements of safety and reliability is also increased, so it is very important to researching the control algorithm of large tonnage crawler crane with Superlift System.In this article, background of researching the control algorithm of large tonnage crawler crane with Superlift System is the project of Dalian Huarui Heavy Industry Group Co., Ltd producing QUY750large tonnage crawler crane, and designing the control algorithm of large tonnage crawler crane with Superlift System in the condition of main boom Superlift System.In addition, evincive experiments are designed and implemented on test model on site respectively, and analyzing the data of test site to perfecting the control algorithm of large tonnage crawler crane with Superlift System.According to the characteristic of QUY750large tonnage crawler crane to designing of control platform of large tonnage crawler crane with Superlift System,and showing the schematic.According to the control algorithm of large tonnage crawler crane with Superlift System to establishing mathematical model, Coordinate System is introduced in the process of establishing mathematical model to simplifying the solution of the moment equilibrium equation.The control algorithm of large tonnage crawler crane with Superlift System is detected by the test with QUY750large tonnage crawler crane, and analyzing the data of test site.Simplify the model of boom system of large tonnage crawler crane with Timoshenko Beam Theory, the paper also detailedly analyzed the loads on the boom, The angle in the foot of the boom are revised with the Timoshenko Beam Theory, and the accuracy of the control algorithm of large tonnage crawler crane with Superlift System are improved to perfecting the control algorithm of large tonnage crawler crane with Superlift System.The control algorithm of large tonnage crawler crane with Superlift System is detected by the test with QUY750large tonnage crawler crane again and showing test flow chart to prove that the accuracy of the control algorithm of large tonnage crawler crane with Superlift System can be improved by introducing Timoshenko Beam Theory and Equivalent Inertia Moment Method. This article focus on researching the control algorithm of large tonnage crawler crane with Superlift System in the condition of main boom Superlift System and fix-fly jib+Superlift System, and establishing mathematical model, and simplifing the model of boom system of large tonnage crawler crane with Timoshenko Beam Theory.The research of the control of large tonnage crawler crane can offer theoretical guidance, and also offer the theoretical basis of perfecting the control equipment of Superlift System.