Research On Legs Of The HB52 Truck-mounted Concrete Pumpwith Curved Leg Based On The Buckling Stability Analysis

Concrete pump truck is a kind of common mechanical equipment in the construction field, has incomparable advantages in terms of concrete pouring, coupled with its convenient operation, high efficiency characteristics, concrete pump truck was highly praised by many people in the industry, in the country’s infrastructure construction, accelerate play an important role in construction of our country the level of urbanization. The large market demand, coupled with the fierce competition between the industry giants and other factors, greatly accelerate the pace of upgrading of concrete pump truck. As a group of arc-shaped legs pump market for a new generation of products, not only by the delivery of a new hydraulic system, and its unique curved legs design of structure and appearance of the pump truck broke the original mindset leg structure design.The arc-shaped leg as an application in the concrete pump truck model thin-walled box structure, the buckling failure of safety and relative to the advantages and disadvantages of the traditional concrete pump front leg structure will be the focus of this paper. Using the back support legs of the arc-shaped leg of the pump truck is the traditional outrigger structure. Therefore, this paper prior to the study of the arc-shaped leg of the choice of rear legs do the corresponding analysis, as the arc-shaped leg analysis calculation.First: using software Hpermesh finite element mesh division of the vehicle, using finite element simulation analysis software(ANSYS) and its own APDL programming language, on the vehicle to do arm frame 360 degree rotary condition calculation, extracting leg of the maximal support reverse force as the single leg tooling calculation of load bearing based on.Second: the comprehensive buckling stability of the rear legs do algorithm based on nonlinear buckling analysis, calculate the potential failure zone, get the stress nephogram of the whole leg, the leg buckling test data and finite element simulation data analysis, accuracy calculation method validation analysis. The advantages and disadvantages in the rollover stability on the curved legs pump, simulate the buckling failure of curved legs by validating the algorithm, failure to complete the field test of the arc-shaped leg buckling, record the experimental data, and carries on the simulation and calculation of consolidation. The consolidation of good results comparing the results of the analysis, comparison and contrast the relative deviation of the comparison includes absolute deviation, verify the reliability of the arc-shaped leg.At last, based on the buckling test and simulation calculation, the structure of the supporting leg of the pump truck is improved.