THEORETICAL ANALYSIS OF TENSILE FORCE VARIATION IN STEEL WIRE ROPES OF OPEN-PIT MINING EXCAVATORS
Keywords:
open-pit mining, steel wire rope, tensile force, mining excavator, mathematical model, hoisting mechanism, drum torque, dynamic loading.Abstract
Steel wire ropes play a decisive role in the operational
reliability and safety of open-pit mining excavators. Their mechanical behavior
directly affects the performance of the hoisting mechanism, energy
consumption, and maintenance costs. This study presents a theoretical analysis
of tensile force variation in steel wire ropes used in quarry excavators based on
mathematical modeling and engineering principles. The influence of bucket
load, rope geometry, drum diameter, rope winding conditions, and dynamic
operational parameters on tensile stress is investigated. The proposed analysis
demonstrates that changes in rope length and drum winding significantly alter
the force distribution and the torque required from the drive system. The results
provide a scientific basis for optimizing rope-operated excavator mechanisms
and increasing their service life and operational efficiency.
