Researching and analyzing the structure of the bridge system for cassava transport vehicles using numerical model

Abstract

The crankshaft lifters for cassava transport trucks was designed and manufactured by
the Research Institute of Agricultural Machinery (RIAM). The crankshaft lifter is raised
to a specified titl angle by a hydraulic lifting gear. Maximum tilting angle and platform
lifting velocity are selected to satisfy the slump of the cassava and the acceleration at the
end of the lifting stroke gradually decrease to 0, ensuring the truck does not flip
vertically when emptying cassava. The paper presents the structural analysis on the 3D
model of the cassava transport truck’s lifters driven by the force/ torque components in
the x, y and z directions during the process. Simulation results were compared with the
experimental results to optimize the design of load bearing capacity, predicting the
evolution of mechanical forces within the lift axle and the state change mechanism
while the lift axle is in operation. The results clearly showed the structure of the lifting
mechanism, the manufacturing material, the load profile, the deformation and the stress
on the beam in the working conditions from the static mode (initial state) to the
threshold state (the state where cassava trucks are lifted up to the angle of inclination
allows emptying all cassava while still ensuring the safety of the truck).