The Stress Analysis Of The Movable Arm Of The Wheel Loader

Wheel loader is an important type of construction machinery. The working device of Wheel loader is the main components by shovel loading, handling, and flating in wheel loader. It has many structure forms and at present the more research is on inversion of six bar linkage. It has many advantages compared with other structures, Such as big spading force, good automatic flat sex, good translation, compact structure, etc.Movable Arm is the main structural components of the working device, and is the important structural support for a bucket and rocker arm. The strength of the movable arm directly affects the quality of the loader working device. The design of the loader working device plays an important role in the design of loader. At present some countries abroad study of loader working device and movable arm is advanced, and take strict technical security measures. Domestic research mainly involves simulation of the multi-rigid-body model of working device, performance analysis and optimization etc, simulation of the coupled model of the working device, hinge point force analysis and performance analysis etc, and the static stress analysis of the movable arm, etc. From the above, this dissertation chooses movable arm of ZL50G loader as research object and the purpose is to further understand the movable arm strength. Making the research for statics and dynamics stress of the movable arm is of great significance for the loader machine design.In this dissertation, Pro/E create a3d model of loader working device; the finite element analysis and modal analysis is finished in ANSYS; the multi-rigid-body model and the coupled model of loader working device is created by ADAMS. This dissertation main tasks are as follows:1、Make the analysis of the wheel loader structure and working principle by the theory. Establish the3D model of the wheel loader parts and complete assembly by Pro/E which is a Professional3d software. Then, make sure the virtual prototype be rigid by checking movement interference.2、Basic on the loader operation process and operation mode, understand the bearing circs of working device under partial load conditions. In this condition use ANSYS to make the finite element analysis of movable arm with and without reinforced plate, and analyze the influence of reinforced plate for movable arm.3、Use ADAMS to build multi-rigid-body model of the working device and carry out. Compare the simulation data and theoretical data from the kinematics and dynamics aspects to validate the correctness of the model.4、Use ADAMS to build the rigid-flexible coupling model of the working device and carry out. Analysis the maximum stress and the stress distribution nephogram of movable arm in the whole process of operation, and obtain the stress curve of the maximum stress node over time.