Abstract: Arrangement for replacing a drilling component in a rock drilling apparatus, which arrangement comprises a component magazine for storing replaceable components required in drilling and means for driving the drilling unit to a predefined position and location relative to the component magazine. The arrangement further comprises a changing unit for moving the components between the component magazine and the drilling unit.

Abstract: A method of determining the position of unmanned mining vehicles. According to the method, control marks are provided in the mine, for positioning mining vehicles in production use by means of a marking device, such as a paint sprayer (14), provided in a specific measuring vehicle (3). The invention also relates to a measuring vehicle that is unmanned and comprises a measuring device for measuring a mine and also a marking device for providing a mine gallery with control marks.

Abstract: A method of determining the position of unmanned mining vehicles. According to the method, control marks are provided in the mine, for positioning mining vehicles in production use by means of a marking device, such as a paint sprayer (14), provided in a specific measuring vehicle (3).

Abstract: Arrangement for replacing a drilling component in a rock drilling apparatus, which arrangement comprises a component magazine for storing replaceable components required in drilling and means for driving the drilling unit to a predefined position and location relative to the component magazine. The arrangement further comprises a changing unit for moving the components between the component magazine and the drilling unit.

Abstract: An arrangement for leading flexible elements, such as hoses, around a hose reel to a rock drill moving along a feed beam, in which the flexible elements are coupled immovably to the feed beam and to the rock drill, characterized in that the flexible elements are mounted on the hose reel in at least two successive layers in the radial direction of the hose reel and each radial layer is pivoted so as to revolve around a shaft of the hose reel independently of the other layers.

Abstract: In the arrangement, a feed beam made of an aluminum profile comprises a slide guide frame, whereby the outer surface of the slide guide frame and respectively, the inner surface of the slide guide are shaped and dimensioned in such a manner that when the slide guide is on the slide guide frame, they are tight against one another. The other edge of the slide guide flame and respectively, the corresponding edge of the slide guide are shaped in such a manner that when the slide guide is mounted in place, its edge is shape-locked relative to the slide guide frame. The slide guide is also secured by separate securing mechanism to the feed beam in such a manner that it cannot move either in the cross or longitudinal direction relative to the feed beam.

Abstract: An arrangement for limiting the swing angle of a boom for a rock drilling unit when the boom is being lifted and lowered. In the arrangement, a control member is coupled to the boom, turning therewith. The control member includes a slot which receives a movable dowel pin. The dowel pin is coupled to control a relief valve so that when the boom is being lifted or lowered, and when it tends to turn outside a predetermined widest permissible swing angle, the control member controls the relief valve so that it lets hydraulic fluid into the swing cylinder for turning the boom in a reverse direction.

Abstract: An arrangement is provided for a telescope feeder of a rock-drilling machine, having two telescopic portions, between which is connected an extension cylinder so that the rock-drilling machine moves along one telescopic portion. The extension cylinder comprises a separate adjusting piston, which is mounted movably around the piston rod so that it can move irrespective of the piston of the extension cylinder. Three cylinder spaces are thus formed inside the extension cylinder and to each cylinder space is connected a separate channel for pressure medium, so that the adjusting piston can be displaced to a desired position.

Abstract: An apparatus for storing drill rods, comprising two drill rod cartridges each comprising a rotating rotor provided with finger boards, guides for guiding the drill rods into gaps formed by the finger boards circumferentially around the axis of the rotor. The rotors are arranged to rotate in opposite directions in such a way that projections in the finger boards of one rotor are positioned in alignment with gaps in the other rotor, the drill rods being positioned therebetween and then passed alternately with the rotor of the two cartridges along spirals to a circumference about the rotors.

Abstract: The invention relates to an apparatus for handling sheets or the like. The apparatus comprises a bridge structure displacable on rails, an upper carriage displaceable on the bridge structure in a direction perpendicular to the rails, vertical beams attached to the upper carriage, and a carriage displaceable on the vertical beams in the direction thereof. The carriage is provided with lifting forks for removing a sheet pack or the like from a shelf place. The carriage is further provided with a gripper frame for picking up a sheet or the like from the shelf place or the like. In order to provide a simple and reliable apparatus, the carriage is provided with arms pivotable around a horizontal axis from a first position above the lifting forks and essentially in parallel therewith to a second position, and vice versa.

Abstract: A device for transport of a cannon or such like with a vehicle, which cannon (2) comprises a gun barrel (3) and a carriage (4) supporting the barrel. The gun carriage is of an interchangeable platform construction, so that the cannon can be transported with a truck vehicle (1) equipped with a platform changing mechanism and lowered to the ground for firing with the help of the platform changing mechanism. The carriage has a bearing rail system (6) compatible with the platform changing mechanism of the truck vehicle, whereas the rails (7) of the bearing rail system are placed either on the lower part of the carriage (4) or on the supporting arms of the carriage.

Abstract: A drill rod opening device for sectional-rod drilling equipment, which opening device (5) comprises a coupling frame (9), which can be coupled to a drilling machine (1) of the drilling equipment and which is provided with a through hole (10) for a drill rod to be threaded into a drill rod shank of the drilling machine, and grasping device (13) mounted in the coupling frame. The grasping device are displaceable to a locking position, in which the grasping device extend into the hole in the coupling frame and, lock the rod to the coupling frame, and to a detaching position, in which the grasping device permit movement of the rod in relation to the coupling frame. The coupling frame is provided to be coupled to a front cover (4) of the drilling machine rotably but substantially axially undisplaceably in relation to the drill rod shank. The grasping device are provided to lock the drill rod in the locking position axially undisplaceably to the coupling frame.

Abstract: A device for changing bore crowns on a drill rod including a bore crown magazine member and means for automatically stopping and locking the magazine member in a desired rotated position.

Abstract: A lubrication system for rock drill machines powered by pressurized fluid, the lubricating system comprising a reservoir of lubricant, means for pressurizing the lubricant in the reservoir, conduits for feeding lubricant from the reservoir to individual dosage units, each connected to a particular lubrication point of the rock drill machine, the lubricant being supplied under pressure from the dosage unit by way of a rod- or plunger-operated piston reciprocable in the dosage unit, the end of the piston rod engaging an adjustable abutment, the dosage units being mounted such as to be reciprocable in unison with the rock drill by way of the drill feed unit.