Research status and prospect of roadheader health management

By analyzing and processing a large amount of monitoring data, the health management technology of roadheader grasps the operation condition of roadheader dynamically and predicts various failures so as to improve the safety of roadheader operation, reducing the accidents rate and losses, and reduce equipment maintenance costs. It is pointed out that the key technologies for health management of roadheader are working condition parameter extraction, full condition health management, remaining service life estimation and remote monitoring. The paper summarizes the current research status of four key technologies, and points out that the current research on the prediction of remaining service life of complex mechanical equipment does not consider the change of working conditions, remaining at the stage of theoretical simulation and laboratory test. If the technology is applied, the variable working conditions must be considered. The research directions of roadheader health management are proposed, including roadheader weak fault diagnosis method, roadheader monitoring multi-information fusion technology, roadheader heavy and maintenance parts life estimation method, oil contamination assessment and the application of digital twin technology in roadheader health management.