Mechanical-electrical-hydraulic coupling modeling and emergency braking characteristics analysis of the hoist

WANG Xiao-na, HE Ya-bin, LAO Cai-xiu, HUANG Jia-hai
(College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

Abstract: Aiming at the emergency braking of mine hoist, a mechanical-electrical-hydraulic coupling simulation methodology was proposed to study the hoist dynamics in emergency braking condition from a system perspective. A lifting system model considering the nonlinear factors such as contact characteristics and flexibility was established in RecurDyn. Hydraulic braking system model and control system model were established in AMESim, and the co-simulation model was constructed by interface module. Finally, taking the lowering condition as example and based on the co-simulation model, the influence of braking deceleration and the ratio of double closed-loop controller's proportion coefficient on the hoist dynamics were analyzed. The results show that the co-simulation model can simultaneously analyze the influence of lifting parameters and braking parameters on the dynamic characteristics of the system. The large braking deceleration can deteriorate the system dynamic characteristics, and too large or too small ratio of the double closed-loop controller's proportion coefficient can deteriorate the system dynamic characteristics and lead to the wire rope slipping.

Key words: hoist; mechanical-electrical-hydraulic coupling; co-simulation; dynamics analysis