US20170234085A1 - Adjustable breakout wrench for a mining machine - Google Patents
Adjustable breakout wrench for a mining machine Download PDFInfo
- Publication number
- US20170234085A1 US20170234085A1 US15/430,199 US201715430199A US2017234085A1 US 20170234085 A1 US20170234085 A1 US 20170234085A1 US 201715430199 A US201715430199 A US 201715430199A US 2017234085 A1 US2017234085 A1 US 2017234085A1
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- US
- United States
- Prior art keywords
- breakout wrench
- carrier
- actuating mechanism
- support shafts
- wrench assembly
- 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.)
- Abandoned
Links
- 238000005065 mining Methods 0.000 title description 2
- 230000007246 mechanism Effects 0.000 claims description 58
- 238000010276 construction Methods 0.000 description 41
- 238000005553 drilling Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000003381 stabilizer Substances 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
- E21B19/18—Connecting or disconnecting drill bit and drilling pipe
-
- 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
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
- E21B19/163—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe piston-cylinder actuated
-
- 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
- E21B1/00—Percussion drilling
- E21B1/38—Hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
-
- 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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
-
- 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
-
- 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
- E21B7/027—Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes
-
- E21C3/04—
Definitions
- the present invention relates to drill rigs, and more particularly to breakout wrenches for blasthole drill rigs.
- Blasthole drill rigs are commonly used in the mining industry to drill through hard rock. Blasthole drill rigs can be found, for example, in coal, copper, and diamond mines throughout the world.
- a blasthole drill rig typically includes a base, a drill tower extending vertically from the base, a sectioned drill string coupled to and supported by the drill tower and extending into a borehole, a drill bit coupled to (e.g., threaded) one end of the drill string within the borehole, and a drill head coupled to the other end of the drill string.
- connections between sections of the drill string and the drill bit often become fixed together by flexing and binding—even welding—caused by normal operational loads of the drill rig. This creates sections that are fixed together so securely that even a rotary head of the drill cannot break apart fixed sections.
- conventional drill rigs include a breakout wrench pivotally coupled to the base or the drill tower such that a working end of the breakout wrench is pivotable to engage and disengage the drill string.
- the breakout wrench is pivotable at a fixed height relative to the drill string.
- DTH hammer drilling assemblies there is a very small range along the drill string near the drill bit (e.g., at a hammer, which is commonly used to couple a drill bit to a remainder of the drill string) that is strong enough to be gripped by the wrench without risking damage to the hammer. This range may vary with different hammers.
- different sections and components disposed along the drill string may require wrench engagement at different heights. Accordingly, there is a need in this field for a durable, compact, strong, and vertically movable breakout wrench.
- a breakout wrench assembly for a drill rig includes two support shafts. Each of the two support shafts is configured to extend in a direction relative to a drill pipe on a drill rig.
- the breakout wrench assembly also includes a carrier coupled to the two support shafts. The carrier is movable linearly along the two support shafts.
- the breakout wrench assembly also includes a breakout wrench pivotally coupled to the carrier or to one of the two support shafts.
- the breakout wrench includes a first end coupled to the carrier or to one of the two support shafts, and a second, opposite end configured to engage the drill pipe.
- a breakout wrench assembly for a drill rig includes two support shafts, wherein each of the two support shafts is configured to extend in a direction relative to a drill pipe on a drill rig.
- the breakout wrench assembly also includes a carrier coupled to the two support shafts.
- the carrier is movable linearly along the two support shafts, and includes a top plate and a bottom plate.
- the breakout wrench assembly also includes a breakout wrench pivotally coupled to the carrier or to one of the two support shaft, the breakout wrench having a first end coupled to the carrier or to one of the two support shafts, and a second, opposite end configured to engage the drill pipe.
- the breakout wrench assembly also includes a first actuating mechanism to pivot the breakout wrench relative to the carrier.
- the first actuating mechanism is disposed between the top plate and the bottom plate.
- the breakout wrench assembly also includes a second actuating mechanism disposed between the two support shafts.
- the second actuating mechanism includes a body and a rod that moves relative to the body and slides within the body.
- FIG. 1 is a side view of a drill rig according to one construction.
- FIG. 2A is a perspective view of a breakout wrench assembly for use with the drill rig of FIG. 1 , in a first vertical position.
- FIG. 2B is a perspective view of the breakout wrench assembly of FIG. 2A , in a second vertical position.
- FIG. 3 is a perspective view of a carrier of the breakout wrench assembly.
- FIG. 4 is an enlarged, partial perspective view of the breakout wrench assembly.
- FIG. 5 is another enlarged, partial perspective view of the breakout wrench assembly.
- FIG. 6 is a partial, perspective view of the breakout wrench assembly on the drill rig.
- FIG. 7A is a perspective view of another construction of a breakout wrench assembly for use with the drill rig of FIG. 1 , in a first vertical position.
- FIG. 7B is a perspective view of the breakout wrench assembly of FIG. 7A , in a second vertical position.
- FIG. 8 is a perspective view of a carrier of the breakout wrench assembly of FIG. 7A .
- FIG. 9 is a cross section of a first portion of the carrier of FIG. 8 .
- FIG. 10 is a cross section of a second portion of the carrier of FIG. 8 .
- a blasthole drill 10 is shown as having a drill tower or mast 14 , a base 18 (e.g., a machinery house) beneath the drill tower 14 that supports the drill tower 14 , an operator cab 22 coupled to the base 18 , and crawlers 26 driven by a crawler drive 30 that drive the blasthole drill 10 along a ground surface 34 .
- the blasthole drill 10 also includes a drill string 38 including a plurality of components such as, for example, drill pipes, a shock sub, a thread, a drill bit, and a bit stabilizer.
- the drill string 38 is configured to extend downward (e.g., vertically) through the ground surface 34 and into a borehole.
- the blasthole drill 10 also includes leveling jacks 42 to support the blasthole drill 10 on the ground surface 34 , a brace 46 that supports the drill tower 14 on the base 18 , a drill head motor 50 coupled to the drill tower 14 that drives a drill head 54 , and a coupling 58 that couples together the drill head 54 with an upper end 60 of the drill string 38 .
- Other constructions of the blasthole drill 10 do not include, for example, the operator cab 22 , the brace 46 , or one or more other components as described above.
- the blasthole drill 10 also includes a breakout wrench assembly 100 for applying torque to the drill string 38 in order to uncouple components that become fixed together due to flexing, binding and welding caused by operational stresses on the drill string 38 .
- the breakout wrench assembly 100 is used as a retrofit or additional component for the blasthole drill 10 .
- the breakout wrench assembly 100 is an integral component of the blasthole drill 10 .
- the breakout wrench assembly 100 is coupled to a lower plate 102 ( FIG. 6 ) of the drill tower 14 , so as to move with the rest of the drill tower 14 .
- the breakout wrench assembly 100 is coupled to the base 18 .
- the breakout wrench assembly 100 includes a base plate 104 , a mounting member 108 , two support shafts 112 , 116 extending (e.g., vertically) between the base plate 104 and the mounting member 108 , and a carrier 120 that is displaceable along the support shafts 112 , 116 using a first actuating mechanism 124 (e.g., a hydraulically or pneumatically actuated cylinder, linear actuator, etc.).
- the first actuating mechanism 124 includes a body 125 and a rod 126 that moves relative to the body 125 and slides within the body 125 .
- a breakout wrench 128 (illustrated in movement) is pivotally coupled to the carrier 120 at a proximal end 130 of the breakout wrench 128 .
- the breakout wrench 128 is actuated by a second actuating mechanism (e.g., a hydraulically or pneumatically actuated cylinder, linear actuator, etc.) to pivot the breakout wrench 128 about an axis A, and to move a distal or working end 136 of the breakout wrench 128 into and out of engagement with components of the drill string 38 (see, e.g., the second actuating mechanism 328 in FIGS. 7A, 7B ).
- the breakout wrench 128 may be any type of breakout wrench, and is not limited by the specific structure illustrated.
- the axis A is both an axis of linear movement of the carrier 120 and the breakout wrench 128 (via the first actuating mechanism 124 ), as well as an axis of rotation of the breakout wrench 128 . In some constructions, the axis A is parallel to the drill string 38 .
- the carrier 120 includes a top plate 140 spaced apart from a bottom plate 144 with two parallel tubes 148 , 152 extending therebetween.
- Each tube 148 , 152 defines an inner wall sized and shaped to receive one of the support shafts 112 , 116 .
- each tube 148 , 152 also includes one or more bearings 156 , 160 disposed about the inner wall to facilitate sliding engagement with the support shaft 112 , 116 .
- a bearing surface is defined by the inner wall of the tubes 148 , 152 such that no other bearing members are necessary.
- the carrier 120 also includes at least one mounting aperture 164 extending through at least a portion of the top plate 140 that is aligned with at least one corresponding mounting aperture 168 extending through at least a portion of the bottom plate 144 .
- the mounting apertures 164 , 168 receive pins 172 ( FIG. 4 ) extending between the top plate 140 and the bottom plate 144 that support the proximal end 130 of the breakout wrench 128 .
- the carrier 120 also includes at least one aperture 176 ( FIG.
- each of the top and bottom plates 140 , 144 that receives the first actuating mechanism 124 , and at least one aperture 180 (e.g., threaded apertures, pin apertures, etc.) for mounting the first actuating mechanism 124 and/or the second actuating mechanism to the carrier 120 , the apertures 176 , 180 defining a mounting region 184 .
- at least one aperture 180 e.g., threaded apertures, pin apertures, etc.
- the support shafts 112 , 116 are received within the tubes 148 , 152 , the pins 172 are received within the mounting apertures 164 , 168 , and the first actuating mechanism 124 is received within the apertures 176 .
- the first actuating mechanism 124 is fixed to the carrier 120 via a mounting assembly 188 coupled to the apertures 180 .
- the mounting assembly 188 includes two pillow blocks 192 coupled to the carrier 120 on opposing sides of the aperture 176 to support a trunnion mount 196 of the first actuating mechanism 124 .
- other constructions include different mounting assemblies in place of or in addition to the mounting assembly 188 described above.
- the base plate 104 of the breakout wrench assembly 100 is coupled to the support shafts 112 , 116 and includes drill mounting apertures 200 (e.g., to couple the base plate 104 to the base 18 ) and an actuating mechanism mounting assembly 204 .
- the actuating mechanism mounting assembly 204 includes a split mounting block 208 having a pin 212 extending across the mounting block 208 and coupled to an end of the first actuating mechanism 124 .
- the pin 212 extends perpendicular to the trunnion mount 196 of the mounting assembly 188 such that a universal joint is created to isolate the first actuating mechanism 124 from undesirable forces that may affect useful life.
- the breakout wrench assembly 100 (notably without the first actuating mechanism 124 illustrated) is attached to the base 18 and drill tower 14 of the blasthole drill 10 .
- the base plate 104 is coupled to the blasthole drill 10 via fasteners 216 extending through the drill mounting apertures 200 , with the mounting member 108 coupled to the drill tower 14 in a similar fashion, at a position offset from the drill string 38 .
- the breakout wrench 128 may be pivoted into engagement (illustrated) and out of engagement (not shown) with the drill string 38 .
- Other constructions include other mounting features (e.g., welding, etc.) to mount the breakout wrench assembly 100 to the blasthole drill 10 .
- the breakout wrench assembly 100 pivots the breakout wrench 128 about the vertical axis A while also vertically displacing the breakout wrench 128 along the support shafts 112 , 116 .
- This vertical movement allows a user to align the working end 136 of the breakout wrench 128 along an optimal section of the drill string 38 .
- the tower 14 could be tilted at an angle relative to ground during drilling (i.e., angle drilling), which would cause the axis A to also tilt and thus no longer be vertical.
- a user pivots the breakout wrench 128 into engagement with the drill string 38 .
- the breakout wrench 128 is operated to apply high levels of torque to disconnect drill string components that were previously fixed in place, or alternatively to attach new components to a drill string 38 . Once this operation is complete and the breakout wrench 128 is no longer required, the breakout wrench 128 is then pivoted away from the drill string 38 such that other drill operations are not inhibited.
- the first actuating mechanism 124 and/or the second actuating mechanism are operated manually, or may be automated.
- the first actuating mechanism 124 and/or second actuating mechanism is operatively coupled to a controller 400 ( FIG. 1 ) including switches/buttons to allow an operator to control the movement of each actuating mechanism.
- the controller 400 includes a user interface to control operation.
- the controller 400 operates the first actuating mechanism 124 and/or the second actuating mechanism (e.g., automatically) according to predetermined operational parameters.
- the controller 400 includes a single button to actuate the operation of the breakout wrench assembly 100 .
- the controller 400 gathers feedback from both the drill string 38 and the breakout wrench assembly 100 so as to partially or fully automate and properly operate the breakout wrench assembly 100 .
- the first actuating mechanism 124 and the second actuating mechanism are each actuated individually and manually by the operator.
- FIGS. 7A-10 illustrate a second construction of a breakout wrench assembly 300 , which is similar to the constructions of the breakout wrench assembly 100 shown in FIGS. 1-6 .
- the breakout wrench assembly 300 is an original feature incorporated onto a new blasthole drill 10 , as opposed to being a retrofit. Accordingly, this description will focus on the aspects of the construction shown that are different from the constructions shown in FIGS. 1-6 . It should be noted, however, that any features and alternatives presented in this construction may be incorporated or substituted into the embodiment of FIGS. 1-6 , or vice versa.
- the breakout wrench assembly 300 includes a first base plate 304 , a second base plate 308 , and a first mounting plate 310 that are each coupled to the blasthole drill 10 (e.g., by fasteners, etc.).
- the breakout wrench assembly 300 similarly includes two or more support shafts 312 , 316 extending vertically with a carrier 320 that is displaceable along the support shafts 312 , 316 using a first actuating mechanism 324 (e.g., a hydraulically or pneumatically actuated cylinder, linear actuator, etc.).
- the first actuating mechanism 324 includes a body 325 and a rod 326 that moves relative to the body 325 and slides within the body 325 .
- the support shaft 316 is shared with a pipe carousel 327 (e.g., for holding drill pipes) to minimize deck space occupied by the breakout wrench assembly 300 .
- the body 325 is fixed to the pipe carousel 327 .
- the breakout wrench assembly 300 also includes a second actuating mechanism 328 (e.g., a hydraulically or pneumatically actuated cylinder, linear actuator, etc.) for pivoting a breakout wrench 332 .
- the second actuating mechanism 328 is disposed within the carrier 320 , and is coupled to one of the support shafts 312 at one end and to the breakout wrench 332 at an opposite end.
- the carrier 320 includes a top plate 336 and a bottom plate 341 .
- a tube 344 extends between and connects the top and bottom plates 336 , 341 , and is configured to receive one of the support shafts 312 , 316 .
- a pair of apertures 348 , 352 are formed in the top and bottom plates 336 , 341 such that the apertures 348 , 352 are aligned to receive the other of the support shafts 312 , 316 (e.g., a shared support shaft 316 that is also used to pivotally support a pipe carousel).
- a support member 356 e.g., rib
- the top plate 336 includes a first mounting member 360 that is coupled to and provides support for the first actuating mechanism 324 .
- the carrier 320 also includes a second mounting member 364 including a pin aperture 368 supported on the tube 344 , which is used to mount the second actuating mechanism 328 .
- the breakout wrench 332 is mounted to the support shaft 316 such that the breakout wrench 332 moves vertically with the carrier 320 and also pivots about the support shaft 316 .
- the breakout wrench assembly 300 also includes bearings (e.g., self-lubricated plastic bushings, ball bearings, etc.) engaging the support shafts 312 , 316 .
- the tube 344 includes a bearing 372 disposed on an interior wall to facilitate sliding engagement of the carrier 320 with the support shaft 312 .
- the breakout wrench 332 includes a bearing 376 for engagement with the support shaft 316 between the top and bottom plates 336 , 341 of the carrier 320 ( FIG. 10 ), such that the breakout wrench 332 in this construction is coupled separately to the support shaft 316 itself between the plates 336 , 341 (as opposed to being directly coupled to the carrier 320 itself).
- the breakout wrench assembly 300 functions in generally the same way as the breakout wrench assembly 100 set forth above, in that the breakout wrench 332 is movable vertically (or at an inclined angle for example during angle drilling) via the carrier 320 on the shafts 312 , 316 and the first actuating mechanism 324 , and is movable pivotally about the shaft 316 via the second actuating mechanism 328 .
- the rod 126 remains stationary, and the body 125 moves with the carrier 120
- FIGS. 7A-10 the body 325 remains stationary and the rod 326 moves with the carrier 320 .
- Other constructions include different arrangements than that illustrated.
- the vertical adjustability of the breakout wrench assemblies 100 , 300 is favorable in certain circumstances in order to engage proper locations along the drill string 38 .
- this feature becomes even more important.
- DTH hammer drilling assemblies there is a very small range along the drill string 38 near the drill bit (e.g., at the hammer) that is strong enough to be gripped by the working end (e.g., working end 136 ) of the wrench without risking damage to the drill hammer. This range may vary with different drill hammers. Accordingly, vertical displacement of the wrench helps improve performance of the breakout wrench assembly 100 , 300 .
- the breakout wrench assemblies 100 , 300 also are compact, durable, and stable structures that have a large range of motion using a relatively low number of simple components.
- One feature enhancing durability of the above described breakout wrench assemblies 100 , 300 is the inclusion of more than one vertical support shaft because the shafts 112 , 116 , 312 , 316 resist moment forces created by operation of the breakout wrench 128 , 332 to enhance durability. This reduces the need for additional structural and support components, thereby reducing cost, easing manufacturability, and minimizing the required deck space.
- the actuating mechanisms are better shielded from operational stressors, and the vertical displacement makes the drill more accommodating to additional components. That is, components that may otherwise impede a traditional, pivoting breakout wrench may now be included in the blasthole drill 10 because the breakout wrench assemblies 100 , 300 are capable of being maneuvered vertically to access the drill string.
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Abstract
Description
- This application claims priority to U.S. Provisional Application No. 62/294,732, filed Feb. 12, 2016, the entire contents of which are incorporated herein by reference.
- The present invention relates to drill rigs, and more particularly to breakout wrenches for blasthole drill rigs.
- Blasthole drill rigs are commonly used in the mining industry to drill through hard rock. Blasthole drill rigs can be found, for example, in coal, copper, and diamond mines throughout the world. A blasthole drill rig typically includes a base, a drill tower extending vertically from the base, a sectioned drill string coupled to and supported by the drill tower and extending into a borehole, a drill bit coupled to (e.g., threaded) one end of the drill string within the borehole, and a drill head coupled to the other end of the drill string.
- During operation, connections between sections of the drill string and the drill bit often become fixed together by flexing and binding—even welding—caused by normal operational loads of the drill rig. This creates sections that are fixed together so securely that even a rotary head of the drill cannot break apart fixed sections. In order to apply high torques to the drill string to break the fixed connections, conventional drill rigs include a breakout wrench pivotally coupled to the base or the drill tower such that a working end of the breakout wrench is pivotable to engage and disengage the drill string. Conventionally, the breakout wrench is pivotable at a fixed height relative to the drill string.
- Depending on the geometry of the components in the drill string, it is favorable at times to adjust the vertical height of the breakout wrench along the drill string so that the breakout wrench engages proper locations along the string. In some specific drilling operations, such as down-the-hole (DTH) hammer drilling, vertical adjustment becomes even more important. In DTH hammer drilling assemblies, there is a very small range along the drill string near the drill bit (e.g., at a hammer, which is commonly used to couple a drill bit to a remainder of the drill string) that is strong enough to be gripped by the wrench without risking damage to the hammer. This range may vary with different hammers. In addition, different sections and components disposed along the drill string may require wrench engagement at different heights. Accordingly, there is a need in this field for a durable, compact, strong, and vertically movable breakout wrench.
- In accordance with one construction, a breakout wrench assembly for a drill rig includes two support shafts. Each of the two support shafts is configured to extend in a direction relative to a drill pipe on a drill rig. The breakout wrench assembly also includes a carrier coupled to the two support shafts. The carrier is movable linearly along the two support shafts. The breakout wrench assembly also includes a breakout wrench pivotally coupled to the carrier or to one of the two support shafts. The breakout wrench includes a first end coupled to the carrier or to one of the two support shafts, and a second, opposite end configured to engage the drill pipe.
- In accordance with another construction, a breakout wrench assembly for a drill rig includes two support shafts, wherein each of the two support shafts is configured to extend in a direction relative to a drill pipe on a drill rig. The breakout wrench assembly also includes a carrier coupled to the two support shafts. The carrier is movable linearly along the two support shafts, and includes a top plate and a bottom plate. The breakout wrench assembly also includes a breakout wrench pivotally coupled to the carrier or to one of the two support shaft, the breakout wrench having a first end coupled to the carrier or to one of the two support shafts, and a second, opposite end configured to engage the drill pipe. The breakout wrench assembly also includes a first actuating mechanism to pivot the breakout wrench relative to the carrier. The first actuating mechanism is disposed between the top plate and the bottom plate. The breakout wrench assembly also includes a second actuating mechanism disposed between the two support shafts. The second actuating mechanism includes a body and a rod that moves relative to the body and slides within the body.
- Other features and aspects of the invention will become apparent by consideration of the following detailed description and accompanying drawings.
-
FIG. 1 is a side view of a drill rig according to one construction. -
FIG. 2A is a perspective view of a breakout wrench assembly for use with the drill rig ofFIG. 1 , in a first vertical position. -
FIG. 2B is a perspective view of the breakout wrench assembly ofFIG. 2A , in a second vertical position. -
FIG. 3 is a perspective view of a carrier of the breakout wrench assembly. -
FIG. 4 is an enlarged, partial perspective view of the breakout wrench assembly. -
FIG. 5 is another enlarged, partial perspective view of the breakout wrench assembly. -
FIG. 6 is a partial, perspective view of the breakout wrench assembly on the drill rig. -
FIG. 7A is a perspective view of another construction of a breakout wrench assembly for use with the drill rig ofFIG. 1 , in a first vertical position. -
FIG. 7B is a perspective view of the breakout wrench assembly ofFIG. 7A , in a second vertical position. -
FIG. 8 is a perspective view of a carrier of the breakout wrench assembly ofFIG. 7A . -
FIG. 9 is a cross section of a first portion of the carrier ofFIG. 8 . -
FIG. 10 is a cross section of a second portion of the carrier ofFIG. 8 . - Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
- With reference to
FIG. 1 , ablasthole drill 10 is shown as having a drill tower ormast 14, a base 18 (e.g., a machinery house) beneath thedrill tower 14 that supports thedrill tower 14, anoperator cab 22 coupled to thebase 18, andcrawlers 26 driven by acrawler drive 30 that drive theblasthole drill 10 along aground surface 34. Theblasthole drill 10 also includes adrill string 38 including a plurality of components such as, for example, drill pipes, a shock sub, a thread, a drill bit, and a bit stabilizer. Thedrill string 38 is configured to extend downward (e.g., vertically) through theground surface 34 and into a borehole. - The
blasthole drill 10 also includes levelingjacks 42 to support theblasthole drill 10 on theground surface 34, abrace 46 that supports thedrill tower 14 on thebase 18, adrill head motor 50 coupled to thedrill tower 14 that drives adrill head 54, and acoupling 58 that couples together thedrill head 54 with anupper end 60 of thedrill string 38. Other constructions of theblasthole drill 10 do not include, for example, theoperator cab 22, thebrace 46, or one or more other components as described above. - With reference to
FIGS. 2A-6 , theblasthole drill 10 also includes abreakout wrench assembly 100 for applying torque to thedrill string 38 in order to uncouple components that become fixed together due to flexing, binding and welding caused by operational stresses on thedrill string 38. In the illustrated construction, thebreakout wrench assembly 100 is used as a retrofit or additional component for theblasthole drill 10. In other constructions, thebreakout wrench assembly 100 is an integral component of theblasthole drill 10. In the illustrated construction, thebreakout wrench assembly 100 is coupled to a lower plate 102 (FIG. 6 ) of thedrill tower 14, so as to move with the rest of thedrill tower 14. In some constructions, thebreakout wrench assembly 100 is coupled to thebase 18. - With reference to
FIGS. 2A-2B , thebreakout wrench assembly 100 includes abase plate 104, a mountingmember 108, twosupport shafts base plate 104 and the mountingmember 108, and acarrier 120 that is displaceable along thesupport shafts first actuating mechanism 124 includes abody 125 and arod 126 that moves relative to thebody 125 and slides within thebody 125. A breakout wrench 128 (illustrated in movement) is pivotally coupled to thecarrier 120 at aproximal end 130 of thebreakout wrench 128. In some constructions, thebreakout wrench 128 is actuated by a second actuating mechanism (e.g., a hydraulically or pneumatically actuated cylinder, linear actuator, etc.) to pivot thebreakout wrench 128 about an axis A, and to move a distal or workingend 136 of thebreakout wrench 128 into and out of engagement with components of the drill string 38 (see, e.g., thesecond actuating mechanism 328 inFIGS. 7A, 7B ). Thebreakout wrench 128 may be any type of breakout wrench, and is not limited by the specific structure illustrated. In some constructions, the axis A is both an axis of linear movement of thecarrier 120 and the breakout wrench 128 (via the first actuating mechanism 124), as well as an axis of rotation of thebreakout wrench 128. In some constructions, the axis A is parallel to thedrill string 38. - With reference to
FIGS. 3 and 4 , thecarrier 120 includes atop plate 140 spaced apart from abottom plate 144 with twoparallel tubes tube support shafts tube more bearings support shaft tubes carrier 120 also includes at least one mountingaperture 164 extending through at least a portion of thetop plate 140 that is aligned with at least one corresponding mountingaperture 168 extending through at least a portion of thebottom plate 144. In the illustrated construction, the mountingapertures FIG. 4 ) extending between thetop plate 140 and thebottom plate 144 that support theproximal end 130 of thebreakout wrench 128. In the illustrated construction, thecarrier 120 also includes at least one aperture 176 (FIG. 3 ) in each of the top andbottom plates first actuating mechanism 124, and at least one aperture 180 (e.g., threaded apertures, pin apertures, etc.) for mounting thefirst actuating mechanism 124 and/or the second actuating mechanism to thecarrier 120, theapertures region 184. - With reference to
FIG. 4 , thesupport shafts tubes pins 172 are received within the mountingapertures first actuating mechanism 124 is received within theapertures 176. Thefirst actuating mechanism 124 is fixed to thecarrier 120 via a mountingassembly 188 coupled to theapertures 180. In the illustrated construction, the mountingassembly 188 includes twopillow blocks 192 coupled to thecarrier 120 on opposing sides of theaperture 176 to support atrunnion mount 196 of thefirst actuating mechanism 124. However, other constructions include different mounting assemblies in place of or in addition to the mountingassembly 188 described above. - With reference to
FIG. 5 , thebase plate 104 of thebreakout wrench assembly 100 is coupled to thesupport shafts base plate 104 to the base 18) and an actuatingmechanism mounting assembly 204. In the illustrated construction, the actuatingmechanism mounting assembly 204 includes asplit mounting block 208 having apin 212 extending across the mountingblock 208 and coupled to an end of thefirst actuating mechanism 124. In some constructions, thepin 212 extends perpendicular to thetrunnion mount 196 of the mountingassembly 188 such that a universal joint is created to isolate thefirst actuating mechanism 124 from undesirable forces that may affect useful life. - With reference to
FIG. 6 , the breakout wrench assembly 100 (notably without thefirst actuating mechanism 124 illustrated) is attached to thebase 18 anddrill tower 14 of theblasthole drill 10. In the illustrated construction, thebase plate 104 is coupled to theblasthole drill 10 viafasteners 216 extending through thedrill mounting apertures 200, with the mountingmember 108 coupled to thedrill tower 14 in a similar fashion, at a position offset from thedrill string 38. Thebreakout wrench 128 may be pivoted into engagement (illustrated) and out of engagement (not shown) with thedrill string 38. Other constructions include other mounting features (e.g., welding, etc.) to mount thebreakout wrench assembly 100 to theblasthole drill 10. - In operation, the
breakout wrench assembly 100 pivots thebreakout wrench 128 about the vertical axis A while also vertically displacing thebreakout wrench 128 along thesupport shafts end 136 of thebreakout wrench 128 along an optimal section of thedrill string 38. Note that while the term “vertical axis” is used herein, during some operations thetower 14 could be tilted at an angle relative to ground during drilling (i.e., angle drilling), which would cause the axis A to also tilt and thus no longer be vertical. Either before or after an optimal height of thebreakout wrench 128 is attained, a user pivots thebreakout wrench 128 into engagement with thedrill string 38. Once engaged, thebreakout wrench 128 is operated to apply high levels of torque to disconnect drill string components that were previously fixed in place, or alternatively to attach new components to adrill string 38. Once this operation is complete and thebreakout wrench 128 is no longer required, thebreakout wrench 128 is then pivoted away from thedrill string 38 such that other drill operations are not inhibited. - The
first actuating mechanism 124 and/or the second actuating mechanism are operated manually, or may be automated. For example, and with reference toFIG. 1 , in some constructions, thefirst actuating mechanism 124 and/or second actuating mechanism is operatively coupled to a controller 400 (FIG. 1 ) including switches/buttons to allow an operator to control the movement of each actuating mechanism. In some constructions, thecontroller 400 includes a user interface to control operation. In some constructions, thecontroller 400 operates thefirst actuating mechanism 124 and/or the second actuating mechanism (e.g., automatically) according to predetermined operational parameters. In some constructions, thecontroller 400 includes a single button to actuate the operation of thebreakout wrench assembly 100. In some constructions, thecontroller 400 gathers feedback from both thedrill string 38 and thebreakout wrench assembly 100 so as to partially or fully automate and properly operate thebreakout wrench assembly 100. In some constructions, thefirst actuating mechanism 124 and the second actuating mechanism are each actuated individually and manually by the operator. -
FIGS. 7A-10 illustrate a second construction of abreakout wrench assembly 300, which is similar to the constructions of thebreakout wrench assembly 100 shown inFIGS. 1-6 . Thebreakout wrench assembly 300 is an original feature incorporated onto anew blasthole drill 10, as opposed to being a retrofit. Accordingly, this description will focus on the aspects of the construction shown that are different from the constructions shown inFIGS. 1-6 . It should be noted, however, that any features and alternatives presented in this construction may be incorporated or substituted into the embodiment ofFIGS. 1-6 , or vice versa. - With reference to
FIGS. 7A and 7B , thebreakout wrench assembly 300 includes afirst base plate 304, asecond base plate 308, and afirst mounting plate 310 that are each coupled to the blasthole drill 10 (e.g., by fasteners, etc.). Thebreakout wrench assembly 300 similarly includes two ormore support shafts carrier 320 that is displaceable along thesupport shafts first actuating mechanism 324 includes abody 325 and arod 326 that moves relative to thebody 325 and slides within thebody 325. In the illustrated construction, thesupport shaft 316 is shared with a pipe carousel 327 (e.g., for holding drill pipes) to minimize deck space occupied by thebreakout wrench assembly 300. In some constructions, thebody 325 is fixed to thepipe carousel 327. As illustrated inFIGS. 7A and 7B , thebreakout wrench assembly 300 also includes a second actuating mechanism 328 (e.g., a hydraulically or pneumatically actuated cylinder, linear actuator, etc.) for pivoting abreakout wrench 332. In the illustrated construction, thesecond actuating mechanism 328 is disposed within thecarrier 320, and is coupled to one of thesupport shafts 312 at one end and to thebreakout wrench 332 at an opposite end. - With reference to
FIG. 8 , thecarrier 320 includes atop plate 336 and abottom plate 341. At one end of thecarrier 320, atube 344 extends between and connects the top andbottom plates support shafts apertures bottom plates apertures support shafts 312, 316 (e.g., a sharedsupport shaft 316 that is also used to pivotally support a pipe carousel). Additionally, a support member 356 (e.g., rib) extends between the top andbottom plates tube 344 and theapertures carrier 320. - With continued reference to
FIG. 8 , thetop plate 336 includes a first mountingmember 360 that is coupled to and provides support for thefirst actuating mechanism 324. Thecarrier 320 also includes a second mountingmember 364 including apin aperture 368 supported on thetube 344, which is used to mount thesecond actuating mechanism 328. As illustrated inFIGS. 7A and 7B , thebreakout wrench 332 is mounted to thesupport shaft 316 such that thebreakout wrench 332 moves vertically with thecarrier 320 and also pivots about thesupport shaft 316. - With reference to
FIGS. 9 and 10 , thebreakout wrench assembly 300 also includes bearings (e.g., self-lubricated plastic bushings, ball bearings, etc.) engaging thesupport shafts FIG. 9 , thetube 344 includes abearing 372 disposed on an interior wall to facilitate sliding engagement of thecarrier 320 with thesupport shaft 312. As illustrated inFIG. 10 , thebreakout wrench 332 includes abearing 376 for engagement with thesupport shaft 316 between the top andbottom plates FIG. 10 ), such that thebreakout wrench 332 in this construction is coupled separately to thesupport shaft 316 itself between theplates 336, 341 (as opposed to being directly coupled to thecarrier 320 itself). - In operation, the
breakout wrench assembly 300 functions in generally the same way as thebreakout wrench assembly 100 set forth above, in that thebreakout wrench 332 is movable vertically (or at an inclined angle for example during angle drilling) via thecarrier 320 on theshafts first actuating mechanism 324, and is movable pivotally about theshaft 316 via thesecond actuating mechanism 328. As illustrated inFIGS. 1-6 , however, therod 126 remains stationary, and thebody 125 moves with thecarrier 120, whereas inFIGS. 7A-10 thebody 325 remains stationary and therod 326 moves with thecarrier 320. Other constructions include different arrangements than that illustrated. - The vertical adjustability of the
breakout wrench assemblies drill string 38. In some specific drilling operations, such as down-the-hole (DTH) hammer drilling, this feature becomes even more important. As noted above, in DTH hammer drilling assemblies, there is a very small range along thedrill string 38 near the drill bit (e.g., at the hammer) that is strong enough to be gripped by the working end (e.g., working end 136) of the wrench without risking damage to the drill hammer. This range may vary with different drill hammers. Accordingly, vertical displacement of the wrench helps improve performance of thebreakout wrench assembly - The
breakout wrench assemblies breakout wrench assemblies shafts breakout wrench blasthole drill 10 because thebreakout wrench assemblies - Although the invention has been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope and spirit of one or more independent aspects of the invention as described.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/430,199 US20170234085A1 (en) | 2016-02-12 | 2017-02-10 | Adjustable breakout wrench for a mining machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662294732P | 2016-02-12 | 2016-02-12 | |
US15/430,199 US20170234085A1 (en) | 2016-02-12 | 2017-02-10 | Adjustable breakout wrench for a mining machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20170234085A1 true US20170234085A1 (en) | 2017-08-17 |
Family
ID=59559036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/430,199 Abandoned US20170234085A1 (en) | 2016-02-12 | 2017-02-10 | Adjustable breakout wrench for a mining machine |
Country Status (9)
Country | Link |
---|---|
US (1) | US20170234085A1 (en) |
CN (2) | CN107083929A (en) |
AU (1) | AU2017200902A1 (en) |
BR (1) | BR102017002748A2 (en) |
CA (1) | CA2957576A1 (en) |
CL (1) | CL2017000365A1 (en) |
MX (1) | MX2017001894A (en) |
PE (1) | PE20171396A1 (en) |
RU (1) | RU2017104405A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10597956B2 (en) | 2016-02-12 | 2020-03-24 | Joy Global Surface Mining Inc | Bit change mechanism for a drill rig |
USD899472S1 (en) * | 2015-07-29 | 2020-10-20 | The Charles Machine Works, Inc. | Upright wrench |
US20220136343A1 (en) * | 2019-02-19 | 2022-05-05 | Titeline Services Pty Ltd | System and method for handling drill rods |
US20220205326A1 (en) * | 2020-12-31 | 2022-06-30 | Rus-Tec Engineering, Ltd. | System and Method of Obtaining Formation Samples Using Coiled Tubing |
US11396780B2 (en) | 2020-01-14 | 2022-07-26 | Quantum Machine Works Ltd. | Wrench for use with making and breaking a drill string |
US11680452B2 (en) * | 2019-06-12 | 2023-06-20 | Caterpillar Global Mining Equipment Llc | System and method for disassembling drill assemblies |
USD1012642S1 (en) * | 2020-12-30 | 2024-01-30 | Vifma Spa | Adjustable breakout wrench for blasthole drill rods of different diameters |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2017200902A1 (en) * | 2016-02-12 | 2017-08-31 | Joy Global Surface Mining Inc | Adjustable breakout wrench for a mining machine |
CN109746869B (en) * | 2019-03-18 | 2024-02-09 | 中铁工程装备集团盾构制造有限公司 | Hard rock development machine main drive inner wear-resistant sleeve hole inner mounting tool |
CN112081532B (en) * | 2020-10-19 | 2022-06-07 | 内蒙古必德工业技术有限公司 | Quick replacement device for drill rod of well drilling machine |
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AU2017200902A1 (en) * | 2016-02-12 | 2017-08-31 | Joy Global Surface Mining Inc | Adjustable breakout wrench for a mining machine |
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- 2017-02-09 AU AU2017200902A patent/AU2017200902A1/en not_active Abandoned
- 2017-02-10 CL CL2017000365A patent/CL2017000365A1/en unknown
- 2017-02-10 BR BR102017002748-1A patent/BR102017002748A2/en not_active Application Discontinuation
- 2017-02-10 US US15/430,199 patent/US20170234085A1/en not_active Abandoned
- 2017-02-10 CA CA2957576A patent/CA2957576A1/en not_active Abandoned
- 2017-02-10 MX MX2017001894A patent/MX2017001894A/en unknown
- 2017-02-10 RU RU2017104405A patent/RU2017104405A/en not_active Application Discontinuation
- 2017-02-13 CN CN201710075981.XA patent/CN107083929A/en active Pending
- 2017-02-13 CN CN201720127601.8U patent/CN207017960U/en not_active Expired - Fee Related
- 2017-02-13 PE PE2017000213A patent/PE20171396A1/en unknown
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US4023449A (en) * | 1975-02-18 | 1977-05-17 | Varco International, Inc. | Tool for connecting and disconnecting well pipe |
US3994350A (en) * | 1975-10-14 | 1976-11-30 | Gardner-Denver Company | Rotary drilling rig |
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Cited By (9)
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USD899472S1 (en) * | 2015-07-29 | 2020-10-20 | The Charles Machine Works, Inc. | Upright wrench |
US10597956B2 (en) | 2016-02-12 | 2020-03-24 | Joy Global Surface Mining Inc | Bit change mechanism for a drill rig |
US11142970B2 (en) | 2016-02-12 | 2021-10-12 | Joy Global Surface Mining Inc | Bit change mechanism for a drill rig |
US20220136343A1 (en) * | 2019-02-19 | 2022-05-05 | Titeline Services Pty Ltd | System and method for handling drill rods |
US11680452B2 (en) * | 2019-06-12 | 2023-06-20 | Caterpillar Global Mining Equipment Llc | System and method for disassembling drill assemblies |
US11396780B2 (en) | 2020-01-14 | 2022-07-26 | Quantum Machine Works Ltd. | Wrench for use with making and breaking a drill string |
USD1012642S1 (en) * | 2020-12-30 | 2024-01-30 | Vifma Spa | Adjustable breakout wrench for blasthole drill rods of different diameters |
US20220205326A1 (en) * | 2020-12-31 | 2022-06-30 | Rus-Tec Engineering, Ltd. | System and Method of Obtaining Formation Samples Using Coiled Tubing |
US11506001B2 (en) * | 2020-12-31 | 2022-11-22 | Rus-Tec Engineering, Ltd. | System and method of obtaining formation samples using coiled tubing |
Also Published As
Publication number | Publication date |
---|---|
CN207017960U (en) | 2018-02-16 |
CL2017000365A1 (en) | 2018-05-11 |
RU2017104405A (en) | 2018-08-10 |
PE20171396A1 (en) | 2017-09-20 |
BR102017002748A2 (en) | 2017-10-10 |
CN107083929A (en) | 2017-08-22 |
CA2957576A1 (en) | 2017-08-12 |
AU2017200902A1 (en) | 2017-08-31 |
MX2017001894A (en) | 2018-08-08 |
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