Abstract: A component for a rock breaking system is magnetized into a state of remanent magnetization. The remanent magnetization of the component has a predetermined varying magnetization profile relative to geometry of the component, the varying magnetization profile describing varying magnetization intensity in the component relative to the geometry of the component.

Abstract: A control system for a percussive drilling apparatus, the control system including a control unit for controlling machine control level operations of the percussive drilling apparatus, one or more machine control nodes connected to the control unit via a control bus, the machine control nodes providing at least one output from one or more sensors of the percussive drilling apparatus, and a measurement-while-drilling analysis functionality arranged to operate at the machine control level. The measurement-while-drilling analysis functionality being arranged to obtain measurement data of the one or more sensors from the one or more machine control nodes via the control bus and to carry out a measurement-while-drilling analysis of a drilling process.

Abstract: A component for a rock breaking system is magnetized into a state of remanent magnetization. The remanent magnetization of the component has a predetermined varying magnetization profile relative to geometry of the component, the varying magnetization profile describing varying magnetization intensity in the component relative to the geometry of the component.

Abstract: A rock drilling apparatus and method for controlling the orientation of a feed beam of a rock drilling apparatus including a carrier, a drilling boom attached at a first end to the carrier, a feed beam attached turnably to a second end of the drilling boom, a drilling unit attached movably along the feed beam, and a support attached to the feed beam for supporting the drilling boom on the ground. The orientation of the boom and feed beam are adjusted to compensate for the orientation change caused by driving the support onto the ground.

Abstract: The disclosure relates to a mining vehicle and a method of moving a boom of a mining vehicle. The boom is provided with several boom joints and there is a mining work device at a distal end of the boom. One or more boom joint positions are determined and stored in a memory medium. A control unit of the mining vehicle may automatically move the boom to a predetermined transport position.

Abstract: The invention relates to a method and apparatus for opening threaded joints of drilling equipment (6) by striking the drilling equipment (6) with the percussion device of a rock drilling rig (1) and by measuring vibration originating from the drilling equipment (6) during striking. In addition to vibration, measuring means (9) measure a parameter defining at least one additional condition, on the basis of which the decision to stop striking is made.

Abstract: A rock drilling apparatus and method for controlling the orientation of a feed beam of a rock drilling apparatus including a carrier, a drilling boom attached at a first end to the carrier, a feed beam attached turnably to a second end of the drilling boom, a drilling unit attached movably along the feed beam, and a support attached to the feed beam for supporting the drilling boom on the ground. The orientation of the boom and feed beam are adjusted to compensate for the orientation change caused by driving the support onto the ground.

Abstract: The disclosure relates to a mining vehicle and a method of moving a boom of a mining vehicle. The boom is provided with several boom joints and there is a mining work device at a distal end of the boom. One or more boom joint positions are determined and stored in a memory medium. A control unit of the mining vehicle may automatically move the boom to a predetermined transport position.

Abstract: The invention relates to a method and apparatus for opening threaded joints of drilling equipment (6) by striking the drilling equipment (6) with the percussion device of a rock drilling rig (1) and by measuring vibration originating from the drilling equipment (6) during striking. In addition to vibration, measuring means (9) measure a parameter defining at least one additional condition, on the basis of which the decision to stop striking is made.

Abstract: The invention relates to a method and an apparatus for detecting tightness of threaded joints of drill rods when unfastening at least one threaded joint of the drilling equipment (6) by impacting the drilling equipment (6) with a percussion device in the rock drilling rig (1). For detecting the tightness there is predetermined at least one fastened model for a situation where the threaded joint/joints are fastened, a vibration signal measured during impacting is compared with both the fastened model and the unfastened model and, on the basis of the comparison, it is determined to which one of the models the tightness of the threaded joints better corresponds at the moment of determination.