1. Introduction Under the background of the rapid development of industrial production today, the demand for the transportation of various materials such as coal and ore is growing. As the core equipment for material transportation, the stable operation of the conveyor is crucial. The BPQJ-(400, 250)/1140S explosion-proof and intrinsically safe combined frequency conversion starter for conveyor te...

Introduction In modern mining operations, the efficient and stable performance of large-scale equipment such as belt conveyors, hoists, pumps, and fans is crucial. Traditional fixed-speed motor drives suffer from high starting currents, excessive energy consumption, and strong mechanical shocks. The advent of mining high-voltage explosion-proof frequency converters has revolutionized the industry ...

Introduction In the mining and bulk material handling industries, belt conveyors are the backbone of efficient material transport. One critical component that ensures smooth operation is the tensioning system, which maintains optimal belt tension to prevent slippage, reduce wear, and improve energy efficiency. Traditional tensioning methods—such as hydraulic, counterweight, and screw tensioning—ha...