A comparison design of truss-type leg between rack-type chord and pin-type chord

Abstract The rack plate is the core structural part for conventional truss-type legs, meanwhile the rack plate limits the economical efficiency of legs due to its characteristics. Aiming at the limit of rack plate, this paper raises a type of pin-type chord for a truss-type leg according to engineering experience. Based on the same weight, taking a self-elevated platform for example, this study uses FEA software to analyze and compare the loads and leg results of rack-type chords and pin-type chords. The result shows the pin-type chord has better mechanical properties, which provides a reference for the optimization of the subsequent self-elevated truss-type leg.