Structural Analysis Of QTC1200 All Terrain Crane

All terrain crane is a crane with the features of both car cranes and off-road cranes,which can be hoisted with large tonnage weight.It has been widely applied in the construction of basic industries such as wind power generation,bridge construction,water conservancy and hydropower and shipbuilding industry,and has been playing an important role in the field of crane in our country.In this paper,we take the QTC1200 all terrain crane as the research object,mainly including the following contents.:(1)Theoretical analysis and calculation of strength and stiffness of all important components of all terrain crane are provided,which provides theoretical basis for validating the correctness of finite element model later.(2)The three-dimensional parameterized finite element model of all ground crane is established.The static analysis of the typical working conditions is carried out.The results of the stress and displacement analysis of the whole machine and the results of the support of each leg are obtained.The result is approximate The correctness of the finite element model is verified by comparing the results with the theoretical analysis.(3)The developed vehicle parameterized finite element model and the optimization module of ANSYS software are used to optimize the spatial configuration of the super lifting device under typical working conditions.The design variables are two spatial configuration parameters: the angle between the superstructure and the main boom expansion direction and the angle between the mast,and the main arm.The minimum effect force is the optimization goal.The vehicle maximum equivalent stress is less than the allowable stress and the main boom deflection is less than the design criterion as the constraint condition.It provides a theoretical basis for the actual operation of the device configuration.(4)Finally,the anti overturning stability of all ground crane is analyzed by torque method with the most dangerous working condition(maximum operating range condition).The finite element numerical solution is consistent with the theoretical solution.It is confirmed that the crane meets the requirement of anti overturning stability and has enough safety.