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Showing result 1 - 5 of 6 essays matching the above criteria.

  1. 1. Electrification of rock drills : An initial study of an electromagnetic percussion concept

    University essay from Linköpings universitet/Fluida och mekatroniska system

    Author : Jakob Smith Siljestrand; Sai Shridhar Chebolu; [2023]
    Keywords : Epiroc; electrification; Hopsan; TLPM; linear motor; rock drill; percussion; electromagnetic; simulation; electric motor; mining; electromagnetism;

    Abstract : The world is looking for greener solutions and so is the mining industry. This quest has led to the question whether it is possible to have a completely electric rock drill. This work carries out an initial exploration of completely electrified percussion. READ MORE

  3. 2. Modeling of a Hydraulic Rock Drill for Condition Monitoring

    University essay from Linköpings universitet/Fordonssystem

    Author : Adam Kagebeck; Mahdi Najafi; [2022]
    Keywords : Condition Monitoring System; Hydraulic Rock Drill; Diagnostic; Modeling; State Space Model;

    Abstract : This thesis aims to investigate the possibility of using a mathematical model to detect several common faults in a hydraulic rock drill. To this end, a parameterized state space model of the hydraulic drill, which simulate its behavior, is created. READ MORE

  4. 3. Evaluation of a Programmable Hydraulic Valve for Drill Rig Applications

    University essay from Linköpings universitet/Fluida och mekatroniska system

    Author : Jonathan de Brun Mangs; Mikael Tillquist; [2018]
    Keywords : Hydraulic valve; CAN; Drill rig; Rock drill; Blast hole drilling; Time delays; Ziegler-Nichols; PI-control;

    Abstract : The increase of intelligent systems can be seen in every industry. Integrated sensors and processors are used with internal control systems to create better performance for mobile hydraulic applications. The report describes how an evaluation was made to see if the productivity of a drill rig could be increased. READ MORE

  5. 4. Experimental Procedures for Operational Modal Analysis of a Power Pack on a Drill Rig

    University essay from Linköpings universitet/Mekanik och hållfasthetslära

    Author : Oscar Nilsson; [2017]
    Keywords : Operational modal analysis; OMA; engine sweep; modal identication; harmonic scaling;

    Abstract : All structures have modal properties such as natural frequencies and damping. In engineeringit is often of interest to estimate these modal properties for certain structures, to be used whenmodelling for example fatigue. This is done by computing them from finite element models, by using experimental measurements or both. READ MORE

  6. 5. Development of new rotation concept for rock drills

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Akepati Bhaskar Reddy; [2015]
    Keywords : hydraulic motor; rock drill; rotation; hydraulisk motor; borrmaskin; vridning;

    Abstract : In blast hole drilling, it is desirable to be able to drill as close as possible to the edge of the tunnel. The minimum distance from the edge is defined by the radial size of the rockdrill. Most of the rock drills used today have a rotation motor that rotates an axel parallel to the shank, which further rotates the shank through a gear set. READ MORE