Structure Synthesis of the Rock Mass Measuring System in a Bucket of a Shovel Excavator and Dragline

Abstract

The aim of the work is to synthesize the functional structure for measuring rock masses in buckets of a shovel excavator and dragline. To achieve the objective, the work includes a review and classification of modern information and diagnostic systems and methods of measuring rock masses in bucket, a description of an excavator as an object of research and problem statement of measuring rock masses in buckets. We consider direct and indirect methods of measuring rock masses in buckets of mining excavators. The methods are based on an estimation of the corresponding forces in the excavator working equipment or of the moment in mechanical transmissions. Industrial excavator information systems are categorized by a rock mass measurement method. We present the structure of the system for measuring the rock mass in a bucket by means of the main electric drives of a power shovel and dragline excavators. The system receives real-time signals from the main electric drives control system, the protection system and the excavator driver's command apparatus. The system includes a digital filter, a model of electric drives, a working equipment model and a module of statistical processing of the rock mass measurement results in the bucket of an excavator. To summarize, we tackle the problem of rock mass measurements in the bucket by means of the main AC drives of a power shovel and dragline excavators.