Optimization of Torsional Dynamic Properties of Hydraulic Excavator Slewing Transmission Mechanism

Abstract

A hydraulic excavator is taken as the object to study. Considering the characteristics of slewing transmission mechanism of hydraulic excavator, the torsional vibration equation is established by the finite element method. According to the torsional vibration equation, the effects of the equivalent moment of inertia of working device on the torsional dynamic properties of slewing transmission mechanism are analyzed. Using the optimization theory, the mathematical model is built, which is by means of the equivalent moment of inertia of working device as objective function and by means of the position parameters of the working device as design variables. Based on the mathematical model, the optimization of torsional dynamic properties of slewing transmission mechanism is studied. Finally, a numerical example is presented.

All‐Solid‐State Supercapacitors Based on Cobalt Magnesium Telluride Microtubes Decorated with Tellurium Nanotubes

“…The electrochemical activity of the supercapacitor is greatly influenced by the electrode material [11–17] . Recent research has shown that battery‐like electrodes with a quick interfacial Faradaic reversible redox reaction process that takes place on the electrode surface and have substantial potential for all‐solid‐state supercapacitor (ASSSC) technology.…”