WO2011075493A1 - Mining machine with booms providing enhanced rib access - Google Patents
Mining machine with booms providing enhanced rib access Download PDFInfo
- Publication number
- WO2011075493A1 WO2011075493A1 PCT/US2010/060375 US2010060375W WO2011075493A1 WO 2011075493 A1 WO2011075493 A1 WO 2011075493A1 US 2010060375 W US2010060375 W US 2010060375W WO 2011075493 A1 WO2011075493 A1 WO 2011075493A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- boom
- operator
- rod
- base
- moving
- Prior art date
Links
- 238000005065 mining Methods 0.000 title description 8
- 238000000034 method Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 description 8
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
Definitions
- the present invention relates to the mining arts and, more particularly, to a mining machine and methods for installing support in a mine passage.
- roof bolter Typically, such a roof bolter is capable of both forming (drilling) boreholes and then installing roof anchors or "bolts" in the boreholes.
- Bolters sometimes include an elongated boom for raising and lowering an attached bolting module, which incorporates a drill for forming the borehole for receiving the bolt or anchor.
- these booms are unmanned. However, in some cases they include an onboard station designed to support the operator of the bolting module.
- a boom arrangement carrying an operator station adapted for installing support in the rib of a mine passage addresses the above-identified need (see. e.g.. U.S. Patent Application Ser. No. 12/559,933, the disclosure of which is incorporated herein by reference).
- This boom arrangement affords an operator positioned at the station easy access to the rib for drilling a borehole, inserting resin in the borehole, and installing an anchor, such as a bolt.
- an anchor such as a bolt
- a need is identified for a bolting apparatus having a boom arrangement utilizing multiple heads adapted for drilling boreholes and installing bolts or anchors therein to increase the efficiency of the bolting operation. Further, a need is identified for a cylinder assembly for use in moving the boom arrangement, which prevents the operator from moving the boom to an undesirable position.
- One aspect of the present disclosure relates to an apparatus for use by an operator in forming boreholes in an underground mine passage including ribs and a roof.
- the apparatus has a base and first and second booms pivotally mounted to the base for swinging toward and away from an adjacent rib.
- a drill is mounted to the base independent of the first and second booms.
- the drill may be positioned between the first and second booms.
- the first and second booms may each cany another drill.
- one of the first and second booms has a proximal end mounted to the base, a distal end opposite the proximal end, a first lateral side adjacent the rib and a second lateral side opposite the first lateral side.
- a first support is supported by the boom near the distal end and is adapted for drilling into the rib of the mine passage.
- a first operator's station earned by the boom adjacent the first drill is adapted to allow the operator to access the rib when positioned on the operator's station without interference from the boom.
- a cylinder assembly including first and second independently movable rods may be used to move the drill relative to the boom.
- an apparatus for use by an operator in forming boreholes in a mine passage including a rib and a roof includes a base and a boom mounted to the base.
- the apparatus also includes a cylinder assembly with a first rod having a first end mounted to the base and a second rod having a second end mounted to the boom.
- the apparatus may include a first and second pair of ports for directing fluid for extending or retracting the first rod and the second rod, respectively.
- the first rod is shorter than the second rod and the first and second rods are independently actuated.
- a method for forming boreholes in a mine passage including an adjacent rib and a roof includes: ( 1 ) providing a vehicle including two pivotably mounted booms, each carrying a drill and including a station adapted for receiving an operator; and (2) providing the vehicle with a drill independent of the booms.
- a further aspect of the disclosure relates to a method of operating an apparatus for forming boreholes in a mine passage.
- the method includes: (1 ) providing a base having a boom; (2) moving the boom from a stowed to a home position by moving a first rod of a cylinder assembly in a first direction; and (3) moving the boom to an operative position by moving a second rod of the cylinder assembly in the first direction.
- the step of moving the boom to the home position comprises extending the first and second rods, while the step of moving the boom to the operative position comprises retracting the first and second rods.
- the step of moving the boom to the operative position comprises retracting the first rod before retracting the second rod.
- the step of moving the boom to the home position comprises moving the first rod using a first control on a base of the apparatus and the step of moving the boom to the operative position comprises moving the second rod using a second control on a boom mounted to the base.
- Figure 1 a is a top plan view of a boom specially adapted for installing support in the rib of a mine passage;
- Figure lb is a side view of the boom of Figure la;
- Figure 2a is a side view of the boom of Figures l a and lb, showing the drill oriented toward the rib;
- Figure 2b is a front perspective view of the boom of Figure 2a;
- Figure 2c is a top plan view of the boom of Figure 2b;
- Figure 3a is a partially cutaway, rear perspective view of the operator's station of the boom;
- Figure 3b is a cutaway side view showing a portion of the operator's station
- Figure 4a is a top plan view of a vehicle incorporating dual booms
- Figure 4b is a partially cutaway rear view of the vehicle of Figure 4a, showing a walkway leading to the operator's station of the boom;
- Figure 5 is a top perspective view of a vehicle incorporating dual swinging booms mounted thereon;
- Figure 6 is a top plan view of the vehicle of Figure 5 wherein the dual swinging booms are in an extended position;
- Figure 7 is a side view of a vehicle incorporating dual swinging booms wherein the booms are mounted for being raised in the vertical direction;
- Figure 8a is a perspective view of one of the dual swinging booms in an extended position
- Figure 8b is a top view of one of the dual swinging booms in an extended position
- Figure 8c is a side view of one of the dual swinging booms in an extended position
- Figure 8d is a side view of one of the dual swinging booms in a retracted position
- Figure 9a is a top view of the boom in a parked position with both of the rods of the cylinder assembly in a fully extended position;
- Figure 9b is a top view of the boom in a starting position with one of the rods of the cylinder assembly in a fully retracted position;
- Figure 9c is a top view of the boom in a maximum swing position with both of the rods of the cylinder assembly in a fully retracted position;
- Figure 10a is a perspective view of a cylinder assembly for use in moving at least one of the booms;
- Figure 10b is a side view of the cylinder assembly in the position illustrated in Figure 9a
- Figure 10c is a side view of the cylinder assembly in the position illustrated in Figure 9b
- Figure l Od is a side view of the cylinder assembly in the position illustrated in Figure 9c.
- FIG l a is a top view illustrating one embodiment of a boom 10 for proposed use in or on a mining machine, such as one commonly referred to as a "roof bolter adapted for moving about an underground mine passage (see, e.g., vehicle V of Figures 4a and 4b including crawler tracks K).
- the boom 10 comprises an elongated structure defining a longitudinal axis A. and includes a proximal end P for mounting to a base B of the mining machine, a distal end D generally opposite the proximal end, a first lateral side Li adjacent the rib, and an opposite lateral side L 2 .
- the boom 10 may have a fixed length or, as shown in Figure 1 a, may be comprised of a plurality of interconnected, telescoping segments or sections 10a . . . l On.
- Means such as an extensible cylinder Hi or other type of actuator, is also typically provided for telescoping one or more of the sections, and a second such cylinder 3 ⁇ 4 or actuator may be provided for raising and lowering the boom 10 relative to the base B and the ground G (i.e., the floor of a mine passage in which the machine is movably positioned).
- a station 12 for supporting the operator O is provided.
- the operator station 12 is near the distal end D of the boom 10, adjacent to a drill 14.
- the operator's station 12 includes at least one platform 12a providing a place on which the operator O may stand during a drilling or bolting event.
- This platform 12a is preferably mounted directly to the distal end D of the boom 10, and thus moves along with it in all possible directions.
- the drill 14 (commonly referred to as a rig) is adapted for forming boreholes in a corresponding face of the mine passage, including at least the rib R. Consequently, this drill 14 is mounted for movement in multiple directions along with the boom 10 so as to facilitate the drilling of boreholes. This is preferably achieved by pivotally mounting the drill 14 to the distal end of the boom 12, such as by connecting it to a turret 16 having an axis of rotation that is generally orthogonal to a drilling axis X formed by the linear path of travel of a drill head 14a (preferably, a rotary one incorporating a hydraulic motor, not shown) along a guide frame 14b. both forming part of the drill 14 (see Figure l a).
- the drill 14 may rolled over and also may be knuckled inward such that this drilling axis X intersects a vertical plane Y aligned generally parallel to the rib R (compare Figures lb and 2b).
- Means may also be provided for moving the drill 14 relative to the operator's platform 12, such as a motive device in the form of cylinder H 3 .
- a motive device in the form of cylinder H 3 .
- This may be used to rotate or swing the drill 14 within a plane generally parallel to the ground G (see action arrow J in Figure 2c).
- this swinging may alter the relative positioning of the drilling axis X and, thus, the direction(s) in which the borehole is formed or any bolt or anchor installed.
- the orientation of this axis X may also be altered based on the relative swinging of the boom 10 about the pivot point established by the mounting at the proximal end P to base B, which may be effected by a motive device such as cylinder H 4 (see Figure 4b) or similar actuator.
- Controls for manually or automatically controlling the drill 14 and the associated moving means may also be provided in a convenient place for being accessed by the operator O when positioned at or adjacent the operator's station 12. Most preferably, the platform 12a may also be raised or lowered relative to any controls associated with the operator's station 12.
- the operator's station 12 associated with the boom 10 may be arranged in use so as occupy a space at least pailially between a generally vertical plane aligned with the lateral side L2 and the vertical plane Y generally parallel to a vertical face of the adjacent rib R.
- the station 12 is thus positioned so as to intersect with the longitudinal axis A of the boom 10, adjacent the distal end D of the boom 10 (see Figure l a).
- an upper surface U of the boom 10 is also arranged to as to be lower that a top of the shoulder S of the operator O when standing at the station 12, and most preferably lies below the upper torso T of the operator O.
- the operator O when positioned at the station 12 is able to fully and freely access the rib R, such as for inserting resin cartridges or bolts into boreholes fonned, for example, using the drill 14 (see, e.g., U.S. Patent Nos. 5,951 ,208 and 7,428,936, the disclosures of which are incorporated herein by reference).
- This includes standing on the station 12 in line with a longitudinal axis A of the boom 10, and possibly in the space between the lateral side L
- the platform 12a of the operator's station 12 is arranged to be positioned between the distal end D of the boom 1 0 and the drill 14 (or in other words, is in tandem with the boom 10).
- the operator's station 12 may include an auxiliary platform 12b that extends adjacent the corresponding end of drill 14 on the lateral side L2 of the boom 10, opposite the side Li facing the rib R (which platform 12b may be made accessible from a central walkway W through an associated vehicle V; see Figures 4a and 4b).
- a guard such as shield 1 8. on the side of the operator's station 12 adjacent the rib R.
- This shield 18 should be of a height sufficient to prevent the operator from exiting the platform 12a of the station 12 in the direction of the rib R, and preferably of a height sufficient to protect the operator from the rib R (including rib rolls) without hampering access.
- the upper section 18a of this shield 18 may be angled outwardly in the direction of the rib R to facilitate access thereto.
- a further shield in the form of a canopy may also be provided adjacent the station 12 for shielding the operator from the roof F, as well as for possibly engaging it and providing temporary support thereto before the anchors are installed.
- any corresponding support is also positioned so as to avoid interfering with the operator's access to the rib R.
- an optional but desirable feature is to strategically associate a disable switch with the boom 10.
- a lever 20 may be capable of cutting off the power required for moving the boom 10 when pushed towards the rib R.
- the lever 20 is located so it will be activated if the operator O standing adjacent shield 18 on platfomi 12a leans towards the rib R, and thus upon being activated prevent further advance of the boom 10 in this condition.
- the upper section 18a of the shield 18 supports the lever 20, such as by carrying a pivot mount 22 (which may be biased toward the operator O to prevent inadvertent actuation).
- a linkage 24 may also mechanically connect the lever 20 to a disable mechanism 26. which may comprise a valve positioned in the path of the fluid flow from the control for controlling the boom to the associated motive device(s).
- FIGs 4a and 4b show a bolting machine in the form of a mobile vehicle V (note crawler tracks K) serving as the base and incorporating a boom 10 with the improved rib reach feature.
- This vehicle V includes an interior walkway W defined at least partially by an elevated platform 32 to allow the operator to access the operator station 12 from inside the vehicle V, thereby avoiding the need for the operator to walk in the space between the lateral side Li and the rib R.
- An optional gate 28 may also be pivotally mounted to block access to the walkway W once the operator is onboard and the boom 10 is deployed.
- the vehicle V shown also includes an automated temporary roof support device 30 for engaging the roof F adjacent the leading end.
- a bolting apparatus 100 having at least three drills 102, 104, 106 adapted for drilling boreholes and installing bolts or anchors therein is illustrated.
- Two of these drills 102, 104 are mounted on swinging booms 1 10, which may be the same or similar as the boom 10 outlined in the foregoing discussion.
- These booms 1 10 are mounted laterally alongside the base, which in the preferred embodiment comprises a vehicle V adapted for tramming about the mine passage.
- the other drill 106 is positioned between the booms 1 10, preferably adjacent the front end of the vehicle V. and most preferably mounted for movement relative to the front end of the vehicle (e.g., sliding from side-to-side or in the travel direction).
- this drill 106 mounts to or adjacent to a device 130 for providing temporary roof support that is associated with the vehicle V.
- the booms 1 10 may also be mounted for being raised in the vertical direction, as may drill 106 via a corresponding linkage to the base (vehicle V) and suitable lifting devices (e.g., hydraulic cylinders).
- suitable lifting devices e.g., hydraulic cylinders.
- a related aspect of the disclosure is a novel actuator for use in moving at least one and preferably both of the booms 1 10.
- the actuator comprises a cylinder 200 mounted to the vehicle V adjacent the boom 1 10, and includes first and second rods 202. 204.
- the first rod 202 extends in a first direction and is connected to the vehicle V, while the second rod 204 extends in a second, generally opposite direction and connects to the pivotally mounted end of the boom 1 10, preferably via a connector 206 having a longitudinal axis generally perpendicular to the longitudinal axis of the boom.
- the cylinder assembly 200 includes a first pair of ports 208 for use in supplying the fluid that causes the first rod 202 to extend or retract, and a second pair of ports 210 providing a similar function for the second rod 204.
- fluid may be used to extend or retract the first or second rods 202, 204 independently, and thus move the associated boom 1 10 accordingly.
- both rods 202, 204 may be fully extended to move the associated boom 1 10 to a stowed position, such as for tramming the vehicle from one location to another. Specifically, the movement is such that the free end of the boom 1 10 is caused to pivot about pivot point Q.
- the boom 1 10 in this retracted position is arranged such that its longitudinal axis is generally parallel with a longitudinal axis of the first rod 202. The free end is within the perimeter of the base or chassis of the vehicle V, and the side-to-side profile is thus minimized for tramming about the mine passage.
- the first rod 202 may be fully retracted, such as by controlling the flow of fluid to the associated ports 208 of the cylinder assembly 200. This retraction is most preferably done using controls 220 located on the vehicle V, as opposed to on the boom 1 10. This arrangement thus precludes the operator on the boom 1 10 from moving it inwardly to a position that is too close to the central portion of the vehicle or its operator (such as at an operator's station for using drill 106).
- Retraction of the rod 202 causes the boom 1 10' to pivot to a ready or home position alongside the vehicle V and generally having its axis of elongation parallel to the direction of travel (but with the free end remaining at least partially within the perimeter; see Figure 9b).
- the length of the first rod 202 helps to define the maximum swing distance for the boom 1 10 in this first operation, and is thus intentionally made short enough such that the associated boom cannot be swung outwardly to a point beyond an initial position.
- the operator may assume the working position at the station 212, and use the associated controls 222 or 224 to extend and retract the second rod 204 for purposes of swinging the boom 1 10 toward and away from the rib.
- the maximum extended position of the boom 1 10" is defined by the second rod 204 being completely retracted.
- the second rod 204 is substantially longer than the first rod 202, and thus can pivot the associated boom 1 10 through a much wider range of angles, which is of course advantageous for purposes of installing support in the adjacent roof and rib of the mine passage.
- boom 1 10 cannot be moved to the stowed position by the operator thereon using controls 222, 224, since the appropriate controls are located elsewhere.
- Bolting intermediate of the home position of boom 1 10' may be accomplished using the movable drill 106 carried by the base (vehicle V) independent of the boom(s) 1 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010331996A AU2010331996A1 (en) | 2009-12-15 | 2010-12-15 | Mining machine with booms providing enhanced rib access |
US13/524,535 US20120247836A1 (en) | 2009-12-15 | 2012-06-15 | Mining machine with booms providing enhanced rib access |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28658709P | 2009-12-15 | 2009-12-15 | |
US61/286,587 | 2009-12-15 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/524,535 Continuation US20120247836A1 (en) | 2009-12-15 | 2012-06-15 | Mining machine with booms providing enhanced rib access |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011075493A1 true WO2011075493A1 (en) | 2011-06-23 |
Family
ID=44167678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/060375 WO2011075493A1 (en) | 2009-12-15 | 2010-12-15 | Mining machine with booms providing enhanced rib access |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120247836A1 (pl) |
AU (1) | AU2010331996A1 (pl) |
PL (1) | PL400392A1 (pl) |
WO (1) | WO2011075493A1 (pl) |
ZA (1) | ZA201204331B (pl) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104033168A (zh) * | 2014-06-18 | 2014-09-10 | 辽宁天安科技有限公司 | 自移平台式钻锚车 |
CN104234729A (zh) * | 2013-06-12 | 2014-12-24 | 卡特彼勒全球矿业美国有限责任公司 | 用于使机器能够移动的系统和方法 |
CN111379526A (zh) * | 2020-03-16 | 2020-07-07 | 中国煤炭科工集团太原研究院有限公司 | 一种电液控制静液压调平双缸举升吊篮式锚护大臂 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9296436B2 (en) * | 2013-08-28 | 2016-03-29 | Caterpillar Global Mining America Llc | Multi-purpose machine chassis |
US11890737B2 (en) | 2015-12-28 | 2024-02-06 | Peter Justin Merello | Overhead drill and anchor press |
US10245715B2 (en) * | 2015-12-28 | 2019-04-02 | Peter Justin Merello | Overhead drill and anchor press |
CN105604589B (zh) * | 2016-03-08 | 2017-12-29 | 中铁工程装备集团有限公司 | 一种小直径全断面隧道掘进机锚杆钻机系统 |
CA2960613C (en) * | 2016-10-31 | 2019-02-26 | Yves Nelson | Gantry and quick connect mechanism for interchanging drilling and bolting assemblies and method of interchanging bolting assemblies |
CN110219684B (zh) * | 2019-06-27 | 2024-07-26 | 江西鑫通机械制造有限公司 | 一种矿用锚杆钻车 |
CA3120518A1 (en) * | 2020-06-01 | 2021-12-01 | Utilicor Technologies Inc. | Excavation apparatus with supporting linkage |
US12000280B2 (en) * | 2021-07-22 | 2024-06-04 | K & K Innovations Ltd | Adjustable drilling rig |
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Publication number | Priority date | Publication date | Assignee | Title |
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US3893520A (en) * | 1974-01-21 | 1975-07-08 | Fmc Corp | Canopy assembly for a dual boom drill |
US4290490A (en) * | 1979-04-16 | 1981-09-22 | Schroeder Brothers Corporation | Roof bolting device |
US6602026B1 (en) * | 1998-01-16 | 2003-08-05 | Joy Mm Delaware, Inc. | Extendible drill support frame for mining apparatus and roof bolting equipment |
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US3842610A (en) * | 1972-12-21 | 1974-10-22 | Peabody Coal Co | Mine roof drilling,bolting and plating machine |
US3961469A (en) * | 1974-08-26 | 1976-06-08 | Fmc Corporation | Rotary windrowing machine |
US4264051A (en) * | 1978-01-17 | 1981-04-28 | Coal Industry (Patents) Limited | Laterally adjustable multiple head |
DE69009914T2 (de) * | 1989-08-28 | 1994-10-13 | Atlas Copco Constr & Mining | Vorrichtung zur Positionierung eines Bohrmeissels. |
FI98759C (fi) * | 1995-01-20 | 1997-08-11 | Tamrock Oy | Menetelmä kallioporakoneen työkalun sijainnin määrittelemiseksi |
CN1072353C (zh) * | 1995-08-04 | 2001-10-03 | 罗克明控股有限公司 | 用于破碎硬材料的装置 |
ZA966727B (en) * | 1995-08-07 | 1997-02-18 | Bolinas Tech Inc | Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting. |
FI981166A (fi) * | 1998-05-26 | 1999-11-27 | Tamrock Oy | Puomisovitelma kallionporauslaitetta varten |
AT506122B1 (de) * | 2007-11-15 | 2011-05-15 | Sandvik Mining & Constr Oy | Vortriebsmaschine |
-
2010
- 2010-12-15 WO PCT/US2010/060375 patent/WO2011075493A1/en active Application Filing
- 2010-12-15 AU AU2010331996A patent/AU2010331996A1/en not_active Abandoned
- 2010-12-15 PL PL400392A patent/PL400392A1/pl unknown
-
2012
- 2012-06-13 ZA ZA2012/04331A patent/ZA201204331B/en unknown
- 2012-06-15 US US13/524,535 patent/US20120247836A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3893520A (en) * | 1974-01-21 | 1975-07-08 | Fmc Corp | Canopy assembly for a dual boom drill |
US4290490A (en) * | 1979-04-16 | 1981-09-22 | Schroeder Brothers Corporation | Roof bolting device |
US6602026B1 (en) * | 1998-01-16 | 2003-08-05 | Joy Mm Delaware, Inc. | Extendible drill support frame for mining apparatus and roof bolting equipment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104234729A (zh) * | 2013-06-12 | 2014-12-24 | 卡特彼勒全球矿业美国有限责任公司 | 用于使机器能够移动的系统和方法 |
CN104033168A (zh) * | 2014-06-18 | 2014-09-10 | 辽宁天安科技有限公司 | 自移平台式钻锚车 |
CN104033168B (zh) * | 2014-06-18 | 2016-05-18 | 辽宁天安科技有限公司 | 自移平台式钻锚车 |
CN111379526A (zh) * | 2020-03-16 | 2020-07-07 | 中国煤炭科工集团太原研究院有限公司 | 一种电液控制静液压调平双缸举升吊篮式锚护大臂 |
Also Published As
Publication number | Publication date |
---|---|
US20120247836A1 (en) | 2012-10-04 |
PL400392A1 (pl) | 2013-01-21 |
AU2010331996A1 (en) | 2012-07-05 |
ZA201204331B (en) | 2013-04-24 |
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