Design and Experiment of Autonomous Charging-Braking for Mountain Electric Monorail Transport System

Abstract:

Aiming to address the problems of low energy replenishment efficiency and insufficient braking reliability in monorail transport systems for mountainous orchards, an electric monorail transporter integrating autonomous power pickup and high-reliability braking was proposed. Based on typical orchard operating conditions, an overall system configuration was developed, including a wedge-type power pickup device, a positioning power supply unit, a dual drum brake, and a turnout mechanism. The cooperative working principles of the key components were analyzed. Multibody dynamic models of the dual drum brake and a conventional single drum brake were established in ADAMS to evaluate emergency braking performance, and a thermo-structural coupled analysis was conducted in ANSYS to investigate temperature and stress under emergency and continuous braking conditions. Simulation results indicated that the dual drum brake achieved a full stop within 1.3 s, significantly shorter than that of the single drum brake. Experimental results showed that the transporter can stably park on a 45° half-slope, with an average turnout switching time of 9.327 s. Autonomous charging achieved high positioning accuracy, with fine positioning errors below 2 mm. The charging station exhibited a charging efficiency of 92% and stable output performance. The proposed system effectively improved both energy replenishment efficiency and braking safety, providing technical support for practical applications.