Application of telescopic box beam in heavy-duty wreckers

Abstract

Heavy-duty wreckers generally use special operating devices such as lifting mechanisms and crane mechanisms to achieve the functions of supporting, lifting, and centering. The telescopic box beam is the most important working part of these mechanisms. Starting from the deflection differential equation, this paper derives the accurate recurrence formula of the out-of-plane instability critical force of the crane telescopic boom. Through the simulation analysis of ANSYS software, it is checked whether the strength of the telescopic box beam meets the design requirements.