Study On Strength Analysis And Test For Off-way Wide-body Mining Dump Truck Frame

Because of the special demand of the market, a kind of off-highway dump truckis commonly known as "wide-body truck". It adopts offset type cab of mine truck andpower transmission system. The operating efficiency of the wide-body truck improvedby strengthening frame, widening chassis, matching high-power engine and anothermeasures on the basis of the highway dump truck.The wide-body truck has many advantages with a disposable loading capacity andgood profitability, it can adapt to harsh working conditions. It generally works in openpit mines, water conservancy, hydropower and other large construction projects.Because of adopting the phenomenon inequalities of the transport ground, harsh roadconditions and severe overloading, it has high demands for carrying, driving, crossingcountry and safety.This type of wide-body frame as an important part of wide-body truck, it is toinstall the base of automotive transmission, cab and cargo boxes, and other importantcomponents, and withstands the effects of complex loads from the road.In order to get the maximum economic benefit in a short time, the wide-bodyvehicle usually take overload and high-speed operating mode in engineering work.The wide-body frame undertakes complicated force in operation, because itwithstands impact load, torsional load, alternating load and so on. Therefore, this typeof wide-body dump truck should have sufficient bending strength, appropriatetorsional strength and a certain resistance to fatigue.The paper’s research object is the frame of wide-body truck. Firstly, thegeometric modeling is established by three-dimensional mapping software Pro/E, andthen building the finite element modeling of the entire frame structure throughHyperMesh that implements Preprocessor. Finally importing the finite elementmodeling into the ANSYS in which we can execute frame strength analysis andresearch. According to the actual work environment, the working conditions ofintensity analysis includes: full bending condition, lifting condition, the front obstacle condition, the front wheels subsidence condition and the middle obstacle condition.Analysis of stress distribution frame in typical operating conditions, we can identifyweaknesses and potential hazardous locations of the frame, providing a theoreticalbasis for measurement points of strain test and improving the local structure of theframe. We also select the two typical conditions to analyze the effect of the front leafspring stiffness on the stress distribution and deformation of the frame.In addition, the frame static load test and dynamic mining test are to providepractical basis to verify the accuracy of the finite element model. We also gain thestress through the frame at the measuring point under different mining conditions.