Modelling and motion characteristics of a new multistage lead screw telescopic mechanism

This paper presents a novel multistage electric telescopic mechanism. The mechanism is composed of multistage lead screw mechanism and multistage telescopic sleeve mechanism. It has the advantages of large stroke, large load and anti-sticking. Moreover, it has superior lateral bearing capacity and can be used in both transverse and longitudinal heavy load conditions. The force of the mechanism is analysed and the motion principle of the mechanism is expounded. Its mathematical model is established and its motion characteristics are studied. The speed, displacement and force data of the lead screw are analysed to verify its reliability and stability. The appropriate design parameters are obtained through the combination of experiment and simulation.