Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B7/00—Special methods or apparatus for drilling
  • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
  • E21B7/026—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting having auxiliary platforms, e.g. for observation purposes

Definitions

• the invention relates to a boom arrangement for a rock drilling apparatus comprising a base and a work platform, which arrangement comprises at ieast one working boom wherein a rock drill or another device used in the actual rock drilling is arranged at a free end of the working boom and at least one auxiliary boom wherein an auxiliary device is arranged at a free end of the auxiliary boom, the working boom and the auxiliary boom being mounted on the base of the rock drilling apparatus by means of a boom mounting frame provided at the front of the work platform, and the booms comprising at least two boom parts pivotally connected relative to each other and equipped with necessary vertical and horizontal hinges in order to drive the device and, correspondingly, the auxiliary device into a desired position.
• rock drilling apparatuses For hoisting personnel, rock drilling apparatuses utilize personnel hoist devices which can be moved in different ways and which comprise a boom and a man cage arranged at a free end of the boom. Such apparatuses are commonly used particularly in tunnel digging and "mini bench" mining. From the man cage, it is possible to bolt, measure and examine a rock and carry out other such procedures which require a short distance from the target from. Furthermore, the man cage enables e.g. service and repair work to be conveniently carried out therefrom.
• a rock drilling apparatus typically comprises at its front at least one working boom wherein a rock drilling apparatus with its auxiliary apparatus or other such necessary apparatuses is arranged at a free end of the working boom.
• a known solution for a man cage boom comprises rails or corresponding guiding surfaces along which the booms can be moved arranged on both longitudinal sides of the rock drilling apparatus, i.e. on the sides in the direction of travel of the rock drilling apparatus. Both booms and their man cages can be driven separately in the longitudinal direction of the rock drilling apparatus from the rear to the front, and vice versa.
• a drawback of such a structure is, however, that the booms have to be driven past the drilling platform in its immediate vicinity, which is a serious safety risk to a user of the apparatus.
• boom structures make the drilling platform, from which the apparatus is controlled and managed, more difficult to access.
• a further drawback of the solution is that the fact that the guiding surfaces have to be sturdy also means that they are heavy, thus disad- vantageously adding to the overall weight of the rock drilling apparatus.
• a still further boom solution is known which is applied in connection with man cages.
• booms are arranged separately on both sides at the rear of the rock drilling apparatus, and the booms can be moved from the rear towards the front of the drilling apparatus and vice versa by means of hinge mechanisms.
• the booms are pivotally mounted such that different parts of the booms can be turned in the vertical direction, i.e. lifted and lowered with respect to the fulcrums thereof.
• the entire boom structure may be arranged on a tumable base or it may be arranged in its entirety to turn with respect to a vertical hinge located at the foot of the boom.
• a drawback of such a solution as well is, however, the poor occupa- tional safety of the drillers working on the drilling platform since also in this case, the boom is arranged to pass by the drilling platform in its immediate vicinity. In the known solutions, the user is thus in danger of becoming compressed between the boom and the frame structure of the rock drilling apparatus, the structures making the use of the rock drilling apparatus more difficult otherwise as well.
• FI 795/73 discloses a boom arrangement arranged in a vehicle wherein the working boom and the auxiliary boom are mounted on the same mounting frame. Both booms, however, are mounted on the mounting frame on the working area side of the apparatus, i.e.
• An object of the present invention is to provide a novel boom ar- rangement for a rock drilling apparatus to prevent drawbacks that occurred in connection with the prior art.
• the boom arrangement of the invention is characterized in that the working boom is arranged on a side of the mounting frame on the opposite side to the work platform, in that the auxiliary boom is mounted on a mounting point provided on the upper surface of the mounting frame, and in that the auxiliary boom is turnable with respect to its pivoted mounting such that the auxiliary device can be driven close to the work platform to be available for a user of the rock drilling apparatus.
• the rock drilling apparatus comprises at least one working boom wherein the rock drilling apparatus and other devices used in the actual rock drilling are arranged.
• the arrangement comprises at least one auxiliary boom which is movable in many different ways and which comprises at least two boom parts pivotally connected relative to each other, and an auxiliary device, preferably a man cage, is arranged at the free end of the outermost boom part of the auxiliary boom.
• the working boom and the auxiliary boom are arranged in the rock drilling apparatus in the same mounting frame, i.e. support, which is provided at the front of the rock drilling apparatus at the front of the drillers' work platform, i.e. the drilling platform.
• the working boom is arranged in the side of the mounting frame facing the drilling area while the auxiliary boom, in turn, is mounted at a mounting point located on the upper surface of the mounting frame.
• the auxiliary boom is turnable such that the auxiliary device can be driven close to the work platform.
• a first boom part of the auxiliary boom is arranged in the longitudinal direction of the rock drilling apparatus, immovably sideways.
• the first boom part can, however, be lifted and lowered with respect to a horizontal hinge arranged at the end of the boom part facing the rock drilling apparatus.
• the first boom part is further provided with a hinge allowing a second boom part connected to the first boom part to be turned at least horizontally.
• a still further idea of another embodiment of the invention is that the auxiliary boom is mounted on a mounting element provided on the upper surface of the mounting frame, the mounting element being turnable around its vertical axis by means of suitable turning devices, such as toothed bars employed by a rotating motor or hydraulic cylinders.
• An advantage of the invention is that the occupational safety of the users of the drilling apparatus is improved considerably when the booms are no longer moved by the sides of the drilling platform in its immediate vicinity. The booms and the movable mechanisms thereof are now at a safe distance at the front of the drillers' work platform where the user can see them. Since the booms are arranged on the base by a common mounting frame, the mounting frame can be made particularly sturdy but still lightweight. However, it takes little space.
• the apparatus is easier to use since now the auxiliary boom can simply be ar- ranged such that the auxiliary device, such as a man cage, arranged therein can easily and safely be turned close to the drilling platform, which enables the user to move directly from the drilling platform to the man cage or carry out service and repair work for the auxiliary device from the drilling platform.
• the boom can also be provided with a necessary range sideways from the rock drilling apparatus.
• a vertical hinge refers to an element whose pivoted axle is vertical, which enables parts connected by such a hinge to be moved horizontally relative to each other.
• the rotating axle of a horizontal hinge is horizontal, which enables parts to be turned vertically relative to each other.
• Figure 1 is a schematic side view of a boom solution for a rock drilling apparatus according to the invention and Figure 2 is a top view of the same,
• FIG. 3 is a schematic side view of another boom solution of the invention.
• Figure 4 is a schematic view of an arrangement for mounting an auxiliary boom possibly applicable in the solution of Figure 3.
• Figure 1 is a simplified view showing a rock drilling apparatus comprising a boom arrangement of the invention.
• the arrangement comprises at least one working boom 1 and a device 2, in this case a rock drilling apparatus, arranged at a free end of the working boom.
• a device 2 in this case a rock drilling apparatus, arranged at a free end of the working boom.
• the device arranged in the working boom may also well be e.g. an indexable bolting apparatus or other such equipment used in the actual opera- tion.
• the structure and operation per se of the working boom and the devices used in rock drilling are obvious to one skilled in the art, so they will not be described in closer detail here nor in the figure.
• the working boom comprises at least two boom parts which can be moved by suitable hinges in order to drive the device into a desired position.
• the rock drilling apparatus comprises two auxiliary booms 3 and 4 wherein auxiliary devices 5 and 6 are arranged at the free ends thereof.
• the auxiliary devices shown in the figure are man cages but also other devices needed to assist the actual rock drilling may be mounted on the auxiliary booms.
• the auxiliary booms shown in Figures 1 and 2 comprise a first and a second boom parts 3a, 3b; 4a, 4b. It is obvious that there may be more boom parts and they do not necessarily have to be structures which can be elongated and shortened in direction A as shown in the figures.
• the first boom part of the auxiliary boom is connected to a mounting point 14 on the upper surface of a mounting frame 11 by a horizontal hinge 7.
• the first boom part is thus always directed towards the operating direction of the rock drilling apparatus but it can be lifted and lowered in direction B with respect to the horizontal hinge 7 e.g. by a pressure medium cylinder 8.
• a vertical hinge 9 to enable the second boom part to be turned in the horizontal direction as shown in Figure 2 is pro- vided at a second end of the first boom part.
• the man cage or other such auxiliary device can then be turned in direction C close to a work platform 10 or the like of the rock drilling device, which enables the user of the device to get in the man cage or e.g. carry out therefrom the service and repair work required by the auxiliary device.
• auxiliary boom preferably further comprises means for keeping the auxiliary device, such as the man cage, in a horizontal position regardless of the movements of the boom.
• both the working and the auxiliary booms are connected to the same mounting frame 11 at the front of the rock drilling apparatus.
• the mounting frame is provided at the front of the work platform 10, transversely with respect to the longitudinal axis of the rock drilling apparatus.
• the mounting frame is preferably located at the front axle or in the vicinity thereof, in which case the front axle receives the mass caused by the booms and the mounting frame, rendering it unnecessary to support the base separately. Furthermore, the loads between the front and rear axles can be divided more advantageously.
• the structure of the mounting frame preferably resembles a box, but other kinds of constructions may also be applied.
• the mounting frame may be a uniform structure extending from the first side of the rock drilling apparatus to its second side as described in the figure, or there may be several mounting frames, in which case each mounting frame comprises one auxiliary boom and one working boom therebelow arranged therein.
• the upper auxiliary boom 4 is shown in its operating po- sition and, correspondingly, the lower auxiliary boom 3 as driven at the work platform in order to alleviate access to the man cage.
• the auxiliary boom can be driven such that its second boom part points to the opposite direction to the direction of travel.
• the auxiliary boom 3 is arranged to be rotated around vertical axis E, in which case it can be driven close to the work platform 10, as shown by the dotted line in the figure.
• the auxiliary boom is mounted in a turning element 12 arranged on the upper surface of the mounting frame, a possible structure of the turning element being shown below in Figure 4.
• the first boom part 3a can be inclined with respect to a horizontal hinge 13 at the foot of the boom. Furthermore, a hinge is provided between the first boom part and the second boom part to enable the second boom part to be turned at least in direction D.
• the second boom part can also be elongated and shortened telescopically, which means that it has an excel- lent range. If two auxiliary booms and two working booms are used, they are arranged in the rock drilling apparatus by using two separate mounting frames. If the arrangement only comprises one auxiliary boom and one working boom, they are together with their mounting frame arranged on the centre line of the rock drilling apparatus. For the sake of clarity, Figure 3 shows the working boom only partially.
• FIG. 4 further shows a detail of the solution of Figure 3 wherein the auxiliary boom is mounted on the upper surface of the mounting frame by means of the turning element 12 arranged to be turned around axis E.
• the turning element 12 is pivotally mounted on the upper surface of the mounting frame 11 and it can be turned e.g.
• auxiliary boom can be conveniently turned in the op- posite direction to the direction of travel of the rock drilling apparatus, which enables the auxiliary device, such as the man cage, to be conveniently driven close to the work platform.
• the booms can be turned by using pressure medium cylinders or e.g. electric motors as a turning device.
• the turning device may in principle be any device appropriate for the purpose which is connected to move the boom parts by suitable turning elements, such as levers, rotating frames or the like.
• suitable turning elements such as levers, rotating frames or the like.
• the figures do not show all necessary turning devices and turning elements.
• the lengths of the different parts as well as the mutual dimensions of the booms may vary, as may the hinges and their turning angles as well.
• the dimensioning of the booms is affected at least by the intended use and the size and dimensions of the rock drilling apparatus.
• Detectors may also be arranged in connection with the booms to detect the position of the booms, in which case the booms can be prevented from colliding with each other and with the other structures of the rock drilling apparatus.
• the working and the auxiliary booms may thus comprise more boom parts and hinges than disclosed in the figures and the description. There can also be more or less booms than shown in the figures. It is also possible to arrange structurally different auxiliary and working booms in a single device in accordance with the invention if preferable for the use of the rock drilling apparatus.
• the point is thus that the rock drilling apparatus is provided with at least one working boom and at least one auxiliary boom which are both mounted in the base by means of the same mounting frame.
• the mounting frame is arranged at the front of the work platform or cab of the rock drilling apparatus.

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• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Earth Drilling (AREA)
• Drilling And Exploitation, And Mining Machines And Methods (AREA)
• Forklifts And Lifting Vehicles (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8555277

Family Applications (1)

Country Status (6)

Cited By (4)

Families Citing this family (6)

Citations (6)

Family Cites Families (3)

• 1999
  • 1999-09-13 FI FI991948A patent/FI108562B/fi active
• 2000
  • 2000-09-12 AU AU72900/00A patent/AU7290000A/en not_active Abandoned
  • 2000-09-12 JP JP2001523475A patent/JP4713038B2/ja not_active Expired - Fee Related
  • 2000-09-12 WO PCT/FI2000/000769 patent/WO2001020117A1/en not_active Ceased
  • 2000-09-12 CN CNB008128189A patent/CN1239807C/zh not_active Expired - Fee Related
• 2002
  • 2002-03-12 SE SE0200727A patent/SE520461C2/sv not_active IP Right Cessation

Patent Citations (6)

Non-Patent Citations (1)

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