EP0692064B1 - Rod cartridge for a rock drilling equipment - Google Patents
Rod cartridge for a rock drilling equipment Download PDFInfo
- Publication number
- EP0692064B1 EP0692064B1 EP94909945A EP94909945A EP0692064B1 EP 0692064 B1 EP0692064 B1 EP 0692064B1 EP 94909945 A EP94909945 A EP 94909945A EP 94909945 A EP94909945 A EP 94909945A EP 0692064 B1 EP0692064 B1 EP 0692064B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- rod cartridge
- displaceable
- shaft
- cartridge according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011435 rock Substances 0.000 title claims abstract description 21
- 238000005553 drilling Methods 0.000 title claims abstract description 11
- 244000027321 Lychnis chalcedonica Species 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
- E21B19/146—Carousel systems, i.e. rotating rack systems
Definitions
- the invention relates to a rod cartridge for a rock drilling equipment, the rod cartridge comprising a rotor with guide plates for rods; end covers having end surfaces, the rods being placeable between the end covers; and rotation means mounted in one end cover for rotating the rotor.
- Rod cartridges are used in rock drilling equipment for storing drill rods or drill pipes used in long-hole drilling and bolts used in rock bolting.
- the rod refers to drill rods and drill pipes used in long-hole drilling or to bolts used in rock bolting.
- the rock drilling equipment in turn refers both to a rock drilling equipment and to a bolting equipment used in rock bolting.
- Cartridge solutions known from the prior art typically utilize different kinds of rotating cartridges comprising end plates and usually two or three guide plates between the end plates.
- a rod is positioned between the end plates into slots formed in the guide plates.
- the slots can be turned successively in alignment with a cartridge feed opening or to a feeding position for placing rods into the cartridge and removing them from the cartridge.
- This type of cartridge is well-known and of a structure self-evident to one skilled in the art, so it will not be described more fully herein.
- a problem with the prior art cartridge solutions is that the cartridges are of such dimensions that they can accommodate only rods of a predetermined length. If such a cartridge is used for rods of a different length, it is necessary to change fixed cartridge structures in order that the cartridge would operate in a desired way. This is problematic especially when the rods are rock bolts having widely varying manufacturing tolerances. If the cartridge is designed for a certain rod length, rods of a greater length cannot be stored in it, and even a few tens of millimetres may render a rod lot unsuitable for the cartridge. Similarly, if it is necessary to use reinforcing bolts and extension rods of different lengths e.g.
- the object of the present invention is to provide a rod cartridge which can be used for storing rods of different lengths according to the requirements and which is easily and rapidly adjustable for different rod lengths.
- the rod cartridge according to the invention is characterized in that one of the end surfaces is displaceable in the longitudinal direction of the rotor so that the distance of the end surface from the opposite end surface is adjustable according to the length of the rod to be used.
- the end surface at one end of the rod cartridge and the guide plate close to it are displaceable in the longitudinal direction of the rod cartridge such that the distance between the end covers can be adjusted for the length of a rod to be used, and the guide plates can be positioned at suitable distances to facilitate the handling of the rod.
- one of the gripping/displacing arms needed for rod handling is similarly displaceable so that rods of different lengths can be gripped at an optimal point with respect to the guide plates.
- the displaceable end surface of the cartridge is mounted at the end close to the rock drill and the bolt feeding device, respectively.
- the cartridge rotation machinery and rotation motor are mounted in close proximity to the displaceable end cover, so that the dimensions of the cartridge will be as small as possible at the front end of the feeding beam of the rock drill and the rod will be fed in a desired way in alignment with either the drilling axis of the rock drill or the feeding axis of the bolting head.
- An advantage of the solution according to the invention is that the transition from one rod length to another takes places rapidly and simply merely by displacing the end cover and the guide plate to a desired position. Similarly, if the rod length varies from a predetermined value, the cartridge may also be adjusted to the wrong rod length without any laborious and expensive replacement of the parts. Moreover, the cartridge according to the invention allows a suitable bolt length to be used at the same working site according to the requirements, which involves savings in material costs.
- FIG. 1 is a schematic top view of a rock bolting equipment.
- the equipment comprises one embodiment of the rod cartridge according to the invention, i.e. a bolt cartridge 1. It further comprises a bolting head 2 movable along its own feeding beam 2a, and a rock drill 3 similarly movable along its own feeding beam 3a. It also comprises gripping arms 4 connected to a mounting beam 5 turnably about a shaft 6.
- the bolting head 2 and the rock drill 3 and the gripping arms 4 with their beams are connected as a single unit to a base 7 turnable about a vertical shaft 8. Both the base 7 and the cartridge 1 are connected to an equipment frame 9.
- Figure 2 shows the rock bolting equipment of Figure 1 as seen in a direction A indicated in Figure 1. It appears from Figure 2 that there are two gripping arms 4 spaced mutually so that rods (not shown in Figure 2) placed in the cartridge 1 can be gripped and withdrawn from the cartridge into alignment with a hole to be bolted.
- the parts corresponding to those shown in Figure 1 are indicated with the same reference numerals with the exception of the gripping arms, which are indicated with the reference numerals 4a and 4b for the sake of clarity.
- Figures 3a and 3b show a rod cartridge according to the invention adjusted for a short rod and a long rod, respectively.
- the rod cartridge is formed of a central tube or shaft 10 mounted for rotation with respect to an upper fixed end cover 11.
- a tubular support arm 12 formed of an outer tube 12a and an inner tube 12b disposed longitudinally movably within the outer tube is also attached to the upper end cover 11.
- the inner tube 12b can be secured immovable with respect to the outer tube 12a by a squeezer 12c.
- the inner tube 12b in turn is attached to another end cover 13 within which means for rotating the cartridge, i.e. a Maltese cross mechanism, is disposed and to which a rotation motor 14 is also connected.
- the other end cover 13 is positioned around the shaft 10, and it can be displaced longitudinally of the shaft.
- Guide plates 15a to 15c are also attached to the shaft 10.
- the guide plates are provided with slots into which rods 16 are placed in a manner known per se .
- the guide plates 15a to 15c are further provided with retainer springs 17a to 17c which keep the rods 16 in position in the slots.
- the rotation mechanism within the other end cover 13 is attached to the shaft 10 unrotatably by means of a friction connecting sleeve 18.
- the guide plate 15c closest to the end cover 13, i.e. the bottommost guide plate in the figure is attached to the shaft 10 by a similar friction connecting sleeve 19.
- the squeezer 12c and the friction connecting sleeves 18 and 19 are opened.
- the lower end cover is thereafter displaced as shown in Figure 3a such that the rod 16 will be positioned between the end surfaces 11a and 13a of the end covers 11 and 13.
- the friction connecting sleeve 18 and 19, respectively, is then tightened so that the Maltese cross mechanism within the end cover 13 is connected unrotatably to the shaft 10, and the guide plate 15c is similarly connected unrotatably to the shaft 10.
- the guide plates 15a and 15b are preferably mounted fixedly to the shaft 10, as they need not be displaced when the length of the rod 16 varies.
- Figure 3b in turn shows a situation in which the cartridge has been adjusted for a long rod 16'.
- the squeezer 12c of the tubes 12a and 12b has correspondingly been opened first and then the friction connecting sleeves 18 and 19, whereafter it has been possible to displace the other end cover 13 and its motor and the guide plate 15c to the bottom end of the shaft 10.
- the friction connecting sleeves 18 and 19 and the squeezer 12c between the tubes 12a and 12b have thereafter been tightened.
- the rotation of the motor 14 rotates the Maltese cross, which rotates the shaft 10 via the friction connecting sleeve 18.
- the guide plates 15a to 15c thus also rotate, displacing the rod 16 or 16' to a position for withdrawing the rod from the cartridge; alternatively, in the case of long-hole drilling, for placing a detached extension rod into an empty slot in the guide plates 15a to 15c.
- Figures 3a and 3b further show how the lower gripping arm 4b has been displaced similarly as the cartridge end cover 13 so that it is at a suitable distance from the ends of the rod 16.
- Both of the gripping arms 4a and 4b are connected to the shaft 6 (not shown in the figure) passing through them.
- the shaft 6 is hexagonal in cross-section, but it is mounted turnably to a stand 20 shown in Figure 4.
- the stand 20 comprises a slot 21 for an I-shaped beam 5.
- the stands 20 are attached to the beam 5 by mounting bolts 22 so as to fix the arm with respect to the beam 5.
- the arms 4 are turned by turning the shaft 6 by a power unit known per se (not shown), such as a hydraulic motor or cylinder.
- the mounting bolts 22 are opened so that the stand 20 is slidable along the track 5.
- the gripping arms are connected to the shaft 6 shown in the figure by a hexagonal hole whereas they are not fixed to the shaft in any way, they are also able to slide with respect to the shaft 7, being thus easily and simply adjustable to a desired position.
- the mounting bolts 22 of the stand 20 are tightened so that the gripping arm will not move with respect to the stand.
- Figure 5 shows another embodiment of the invention in which the cartridge itself is fixed in length, that is, the end covers 11 and 13 are interconnected by an integral supporting arm 12.
- the end surfaces lla and 13a form part of separate end plates llb and 13b connected for rotation with the rotor shaft 10 so that the rods 16 contained in the cartridge will not chafe the end surfaces 11a and 13a.
- the end plate 13b is displaceable in the longitudinal direction of the shaft 10 so as to adjust the distance between the end surfaces 13a and lla in accordance with the length of the rod 16.
- the guide plate 15c close to the displaceable end plate 13b is displaceable in the longitudinal direction of the shaft 10.
- the end plate 13b and the guide plate 15c may both be arranged to be separately attached unrotatably to the shaft either by a friction connecting sleeve mentioned above or other fixing means.
- the guide plate 15c and the end plate 13b may be fixed to each other, in which case a single fixing means will suffice, such as a friction connecting sleeve.
- the Maltese cross mechanism operated by the rotation motor may be connected fixedly to rotate the shaft 10.
- the rotation mechanism and the guide plate 15c may be connected to the shaft 10 unrotatably in different ways e.g. by a wedge provided in the shaft 10 or in some other way. Also, they may be connected in the vertical direction of the shaft 10 by various screw fixing means and other similar means.
- the tubes 12a and 12c may be interconnected in various way, depending on the application.
- the outer tube 12a and the inner tube 12b may be interlocked immovably with respect to each other by the squeezer 12c at the free end of the outer tube 12a.
- the end of the outer tube 12a will be squeezed smaller than its diameter due to a transverse slit 12d formed in the outer tube 12a and a longitudinal slit starting from the transverse slit and extending through the squeezer 12c also starting from the transverse slit, thus fixing the inner tube 12b in position.
- rods of different diameters can be used merely by changing the springs 17a to 17c. In this way, it is possible to select the diameter as well as the length of the rods according to the requirements in each particular case.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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)
Abstract
Description
Claims (10)
- Rod cartridge (1) for a rock drilling equipment, comprising a rotor with guide plates (15a to 15c) for rods (16); end covers (11, 13) having end surfaces (11a, 13a), the rods (16) being placeable between the end covers (11, 13); and rotation means (14) mounted in one end cover (13) for rotating the rotor, characterized in that one of the end surfaces (13a) is displaceable in the longitudinal direction of the rotor so that the distance of the end surface (13a) from the opposite end surface (11a) is adjustable according to the length of the rod (16) to be used.
- Rod cartridge according to claim 1, characterized in that the guide plate (15c) closest to the displaceable end surface (13a) is correspondingly displaceable in the longitudinal direction of the rotor.
- Rod cartridge according to claim 1 or 2, characterized in that the displaceable end surface (13a) is integral with said one end cover (13) so that the end surface (13a) and the end cover (13) move simultaneously.
- Rod cartridge according to claim 3, characterized in that a support arm (12) formed of an outer tube (12a) and an inner tube (12b) is provided between the end covers (11, 13) of the rod cartridge, the inner tube (12b) being movable with respect to the outer tube (12a) in the longitudinal direction of the rod cartridge, and the tubes being arranged to be locked immovable with respect to each other, and that the rotation means are connected to a rotor shaft (10) by a friction connecting sleeve (18) so that they are detachable from the shaft (10) and lockable for rotating it via the friction connecting sleeve (18).
- Rod cartridge according to claim 4, characterized in that the guide plate (15c) closest to the end cover (13) is connected to the rotor shaft (10) by a friction connecting sleeve (19) such that it is detachable from the rotor shaft (10) and lockable immovable with respect to it by means of the friction connecting sleeve (19).
- Rod cartridge according to claim 1 or 2, characterized in that the displaceable end surface (13a) forms part of a separate end plate (13b) displaceable in the longitudinal direction of the rotor shaft (10).
- Rod cartridge according to claim 6, characterized in that the separate end plate (13b) is mounted for rotation with the rotor shaft (10).
- Rod cartridge according to claim 7, characterized in that the end plate (13b) and the guide plate (15c) close to it are connected to form a single displaceable unit.
- Rod cartridge according to claim 8, characterized in that the end plate (13b) and the guide plate (15c) are connected to the rotor shaft (10) by a friction connecting sleeve (19) so that they are together displaceable in the longitudinal direction of the rotor shaft (10) when the friction connecting sleeve (19) is opened and correspondingly lockable unrotatable and axially immovable with respect to the shaft (10) by tightening the friction connecting sleeve (19).
- Rod cartridge according to any of the preceding claims, characterized in that both of the end surfaces (11a, 13a) form part of separate end plates (llb, 13b) rotating with the rotor shaft (10).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI931616 | 1993-04-08 | ||
FI931616A FI95621C (en) | 1993-04-08 | 1993-04-08 | Bar cage for a rock drill |
PCT/FI1994/000100 WO1994024410A1 (en) | 1993-04-08 | 1994-03-17 | Rod cartridge for a rock drilling equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0692064A1 EP0692064A1 (en) | 1996-01-17 |
EP0692064B1 true EP0692064B1 (en) | 1998-08-26 |
Family
ID=8537717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94909945A Expired - Lifetime EP0692064B1 (en) | 1993-04-08 | 1994-03-17 | Rod cartridge for a rock drilling equipment |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0692064B1 (en) |
AT (1) | ATE170256T1 (en) |
AU (1) | AU678447B2 (en) |
CA (1) | CA2159474C (en) |
DE (1) | DE69412803T2 (en) |
FI (1) | FI95621C (en) |
PL (1) | PL172868B1 (en) |
WO (1) | WO1994024410A1 (en) |
ZA (1) | ZA942205B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1314808B1 (en) | 2000-03-08 | 2003-01-16 | Casagrande Spa | AUTOMATIC LOADER FOR DRILLING RODS |
SE541990C2 (en) * | 2017-11-30 | 2020-01-14 | Epiroc Rock Drills Ab | Rod feeding device and method of rod feeding device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0121545A1 (en) * | 1982-10-13 | 1984-10-17 | Moss Rosenberg Verft A/S | Assembly for handling and racking drill pipe in a derrick |
FI85905C (en) * | 1990-06-15 | 1992-06-10 | Tampella Oy Ab | Device for storing drill rods |
US5174389A (en) * | 1991-07-12 | 1992-12-29 | Hansen James E | Carousel well rig |
-
1993
- 1993-04-08 FI FI931616A patent/FI95621C/en not_active IP Right Cessation
-
1994
- 1994-03-17 CA CA002159474A patent/CA2159474C/en not_active Expired - Lifetime
- 1994-03-17 EP EP94909945A patent/EP0692064B1/en not_active Expired - Lifetime
- 1994-03-17 WO PCT/FI1994/000100 patent/WO1994024410A1/en active IP Right Grant
- 1994-03-17 AT AT94909945T patent/ATE170256T1/en not_active IP Right Cessation
- 1994-03-17 AU AU62595/94A patent/AU678447B2/en not_active Expired
- 1994-03-17 PL PL94310974A patent/PL172868B1/en not_active IP Right Cessation
- 1994-03-17 DE DE69412803T patent/DE69412803T2/en not_active Expired - Fee Related
- 1994-03-29 ZA ZA942205A patent/ZA942205B/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL310974A1 (en) | 1996-01-22 |
FI931616A0 (en) | 1993-04-08 |
AU6259594A (en) | 1994-11-08 |
AU678447B2 (en) | 1997-05-29 |
EP0692064A1 (en) | 1996-01-17 |
FI95621B (en) | 1995-11-15 |
ZA942205B (en) | 1994-10-31 |
PL172868B1 (en) | 1997-12-31 |
FI931616A (en) | 1994-10-09 |
FI95621C (en) | 1996-02-26 |
ATE170256T1 (en) | 1998-09-15 |
CA2159474C (en) | 2004-05-04 |
DE69412803T2 (en) | 1999-04-29 |
WO1994024410A1 (en) | 1994-10-27 |
CA2159474A1 (en) | 1994-10-27 |
DE69412803D1 (en) | 1998-10-01 |
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