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WO2004081345A1 - A mining lacing pattern - Google Patents

A mining lacing pattern Download PDF

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Publication number
WO2004081345A1
WO2004081345A1 PCT/AU2004/000140 AU2004000140W WO2004081345A1 WO 2004081345 A1 WO2004081345 A1 WO 2004081345A1 AU 2004000140 W AU2004000140 W AU 2004000140W WO 2004081345 A1 WO2004081345 A1 WO 2004081345A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
picks
pick
continuous miner
axis
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.)
Ceased
Application number
PCT/AU2004/000140
Other languages
French (fr)
Inventor
Albert Daniel Dawood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Age Mining Services Pty Ltd
Original Assignee
Age Mining Services Pty Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Age Mining Services Pty Ltd filed Critical Age Mining Services Pty Ltd
Priority to AU2004219985A priority Critical patent/AU2004219985B2/en
Priority to US10/548,933 priority patent/US20060255649A1/en
Priority to EP04709167A priority patent/EP1604097A4/en
Publication of WO2004081345A1 publication Critical patent/WO2004081345A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
    • E21C25/10—Rods; Drums

Definitions

  • the present invention relates to the lacing pattern of picks on miner drums and more particularly but not exclusively to the lacing patterns on continuous miner drums.
  • Continuous miners are used to mine coal. However, they are also used in earth layers containing hard rock.
  • a continuous miner drum includes a generally cylindrical body (web) from which there extends start vanes. Each vane has attached to it a plurality of picks.
  • the picks can be of a point configuration or alternatively a chisel configuration.
  • disclosed in International Application PCT/AUOl/00960 International Publication WO 02/12677 A2 is the drum of a continuous miner, with the picks thereof having a "chisel" configuration. That is, they have a leading face and a trailing face that converge to a cutting edge.
  • the arrangement of the picks on the vanes is called a lacing pattern. When the drum is rotated each pick follows a cutting line.
  • a continuous miner drum including: a generally cylindrical body having a longitudinal axis about which the drum rotates in a predetermined direction; a plurality of start vanes fixed to the body so as to extend outwardly theref om away from said axis, each vane also extending longitudinally and angularly with respect to said axis; a plurality of picks fixed to each vane so as to be stationary with respect thereto, each pick having a leading face, a trailing face and side faces between which the leading and trailing faces extend, the leading and trailing faces converge away from said axis to a cutting edge, and wherein upon rotation of the drum each pick follows a cutting path with picks of adjacent paths being spaced by a longitudinal distance of between 30 mm and 100 mm measured between adjacent side faces of the picks of adjacent cutting paths.
  • the continuous miner drum is configured to mine coal, with the picks having a spacing of 50 mm to 90 mm.
  • each pick has a cutting edge of a length of about 30 mm.
  • the vanes extend angularly about said axis at an angle between 10° and 30°.
  • Figure 1 is a schematic perspective view of the drum of a continuous miner
  • Figure 2 is a schematic front elevation of a pick employed in the drum of Figure l;
  • Figure 3 is a schematic side elevation of the pick of Figure 2;
  • Figure 4 is a schematic illustration showing a pick lacing pattern to be employed with the drum of Figure 1;
  • Figure 5 is a schematic illustration of an alternative pick lacing pattern.
  • FIG. 1 of the accompanying drawings there is schematically depicted a continuous miner drum 10.
  • the drum 10 includes a generally cylindrical body (web) 11 having an outer cylindrical surface 12. Extending from the surface 12 are “start” vanes 13 and an end (clearance) vane 14. Each vane 13 extends both angularly and longitudinally with respect to the longitudinal axis 15 of the drum 10. Still further each vane 13 extends radially outwardly from the surface 12 with respect the axis 15.
  • each vane 13 Positioned on each vane 13 is a plurality of picks 16 at an angle of attack of between 40° and 55°.
  • the picks 16 are fixed with respect to their respective vane 13 and extend outwardly there from relative to the axis 15.
  • the clearance ring also has picks 16 which also extend outwardly relative to the axis 15.
  • the drum 10 was adapted to mine coal, the drum 10 would be rotated about the axis 15 and moved into the coal seam.
  • the picks 16 engage the coal and remove it from the seam from where the material is delivered to conveying apparatus.
  • Each pick 16 upon rotation of the drum 10 moves along a cutting path. It should be appreciated that the drum 10 depicted in Figure 1 is also illustrated in the previously mentioned International Patent Application.
  • Each pick 16 includes a shank 17 via which the pick 16 is attached to its associated vane 13.
  • the outer extremity of the shank 17 is provided with a cutting head
  • the faces 19 and 20 converge away from the axis 15 to a cutting edge 21.
  • the faces 19 and 20 extend between side faces 22.
  • the extremity 23 of the shank 17 is received within a sleeve and a holder fixed to irrespective vane 13.
  • the picks 16 are arranged in a lacing pattern. Two lacing patterns are shown in Figures 4 and 5.
  • the lacing pattern of Figure 4 would be a lacing pattern employed in a drum 10 adapted to mine coal.
  • the lacing pattern of Figure 5 would be used on a drum 10 to mine in hard rock conditions.
  • the lacing pattern illustrated in Figure 4 is the developed cylindrical surface 12 of a continuous miner drum.
  • the drum would rotate about its longitudinal axis in the direction of the arrow 24.
  • This particular drum would have end vanes (clearance) 25 and 26 with picks 16 arranged along to start vanes 13.
  • the drum would also have a left hand web section 27, a central web section 28 and a right hand web section 29.
  • Each section 27, 28 and 29 would have a series of start vanes 30, each start vane 30 having a plurality of picks 16.
  • the picks 16 have a lacing pattern such that the picks 16 have a predetermined spacing in the direction of the longitudinal axis 15. More particularly each pick 18 passes along a cutting path 31. Each pick 16 on a respective path 31 is spaced from the pick 16 of the next adj acent path 31 by a spacing "S".
  • the spacing "S” is the distance between the adjacent side faces 22 of the picks 16 of adjacent cutting paths 31.
  • the lacing pattern would be such that the spacing "S” is a distance of 50 mm to 90 mm.
  • the picks 16 would have a cutting edge of 21 of approximately 30 mm in length.
  • the drum would have a rotational speed between 30 and 60 revolutions per minute. This would provide each pick 16 with approximately a tip speed between 1.76 and 3.52 metres per second.
  • the lacing pattern of Figure 5 is intended for a drum that is to engage hard rock. h this embodiment, the spacing "S" is 40 mm to 50 mm. Each pick 16 would have a cutting edge 21 with a length of about 10 mm.
  • the sections 25 and 26 would have picks 16 passing along cutting lines 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Tyre Moulding (AREA)

Abstract

A continuous miner drum (10) comprises a cylindrical body (11) having an outer cylindrical surface (12). Extending from the surface (12) are 'start' vanes (13), with each vane extending angularly and longitudinally with respect to the longitudinal axis (15) of the drum. Positioned on each vane is a plurality of picks (16), each pick having a leading face, a trailing face and side faces between which the leading and trailing faces extend. Upon rotation of the drum each pick follows a cutting path with picks of adjacent paths being spaced by a longitudinal distance of between 30mm and 100mm measured between adjacent side faces of the picks of adjacent cutting paths.

Description

A MINING LACING PATTERN
Technical Field
The present invention relates to the lacing pattern of picks on miner drums and more particularly but not exclusively to the lacing patterns on continuous miner drums.
Background of the Invention
Continuous miners are used to mine coal. However, they are also used in earth layers containing hard rock.
A continuous miner drum includes a generally cylindrical body (web) from which there extends start vanes. Each vane has attached to it a plurality of picks. The picks can be of a point configuration or alternatively a chisel configuration. For example, disclosed in International Application PCT/AUOl/00960 (International Publication WO 02/12677 A2) is the drum of a continuous miner, with the picks thereof having a "chisel" configuration. That is, they have a leading face and a trailing face that converge to a cutting edge. The arrangement of the picks on the vanes is called a lacing pattern. When the drum is rotated each pick follows a cutting line.
Previously known lacing patterns have a number of disadvantages including not minimising wear of the picks and not minimising dust production.
Object of the Invention It is the object of the present invention to overcome or substantially ameliorate at least one of the above disadvantages.
Summary of the Invention
There is disclosed herein a continuous miner drum including: a generally cylindrical body having a longitudinal axis about which the drum rotates in a predetermined direction; a plurality of start vanes fixed to the body so as to extend outwardly theref om away from said axis, each vane also extending longitudinally and angularly with respect to said axis; a plurality of picks fixed to each vane so as to be stationary with respect thereto, each pick having a leading face, a trailing face and side faces between which the leading and trailing faces extend, the leading and trailing faces converge away from said axis to a cutting edge, and wherein upon rotation of the drum each pick follows a cutting path with picks of adjacent paths being spaced by a longitudinal distance of between 30 mm and 100 mm measured between adjacent side faces of the picks of adjacent cutting paths. hi a first preferred form, the continuous miner drum is configured to mine coal, with the picks having a spacing of 50 mm to 90 mm.
In a further preferred form, each pick has a cutting edge of a length of about 30 mm.
In a further preferred form, there is only one pick per cutting line. In a further preferred form, there is at least two picks per cutting line. In a still further preferred form, the vanes extend angularly about said axis at an angle between 10° and 30°.
Brief Description of the Drawings
A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings wherein: Figure 1 is a schematic perspective view of the drum of a continuous miner;
Figure 2 is a schematic front elevation of a pick employed in the drum of Figure l;
Figure 3 is a schematic side elevation of the pick of Figure 2; Figure 4 is a schematic illustration showing a pick lacing pattern to be employed with the drum of Figure 1; and
Figure 5 is a schematic illustration of an alternative pick lacing pattern.
Detailed Description of the Preferred Embodiments
In Figure 1 of the accompanying drawings there is schematically depicted a continuous miner drum 10. The drum 10 includes a generally cylindrical body (web) 11 having an outer cylindrical surface 12. Extending from the surface 12 are "start" vanes 13 and an end (clearance) vane 14. Each vane 13 extends both angularly and longitudinally with respect to the longitudinal axis 15 of the drum 10. Still further each vane 13 extends radially outwardly from the surface 12 with respect the axis 15.
Positioned on each vane 13 is a plurality of picks 16 at an angle of attack of between 40° and 55°. The picks 16 are fixed with respect to their respective vane 13 and extend outwardly there from relative to the axis 15. The clearance ring also has picks 16 which also extend outwardly relative to the axis 15. For example if the drum 10 was adapted to mine coal, the drum 10 would be rotated about the axis 15 and moved into the coal seam. The picks 16 engage the coal and remove it from the seam from where the material is delivered to conveying apparatus. Each pick 16 upon rotation of the drum 10 moves along a cutting path. It should be appreciated that the drum 10 depicted in Figure 1 is also illustrated in the previously mentioned International Patent Application.
Each pick 16 includes a shank 17 via which the pick 16 is attached to its associated vane 13. The outer extremity of the shank 17 is provided with a cutting head
18 that includes a leading face 19 and a trailing face 20. The faces 19 and 20 converge away from the axis 15 to a cutting edge 21. The faces 19 and 20 extend between side faces 22.
The extremity 23 of the shank 17 is received within a sleeve and a holder fixed to irrespective vane 13.
The picks 16 are arranged in a lacing pattern. Two lacing patterns are shown in Figures 4 and 5.
The lacing pattern of Figure 4 would be a lacing pattern employed in a drum 10 adapted to mine coal. The lacing pattern of Figure 5 would be used on a drum 10 to mine in hard rock conditions.
The lacing pattern illustrated in Figure 4 is the developed cylindrical surface 12 of a continuous miner drum. The drum would rotate about its longitudinal axis in the direction of the arrow 24. This particular drum would have end vanes (clearance) 25 and 26 with picks 16 arranged along to start vanes 13. The drum would also have a left hand web section 27, a central web section 28 and a right hand web section 29. Each section 27, 28 and 29 would have a series of start vanes 30, each start vane 30 having a plurality of picks 16.
In respect of the left hand section 27, central section 28 and right hand section
29, the picks 16 have a lacing pattern such that the picks 16 have a predetermined spacing in the direction of the longitudinal axis 15. More particularly each pick 18 passes along a cutting path 31. Each pick 16 on a respective path 31 is spaced from the pick 16 of the next adj acent path 31 by a spacing "S".
The spacing "S" is the distance between the adjacent side faces 22 of the picks 16 of adjacent cutting paths 31. In the embodiment of Figure 4, the lacing pattern would be such that the spacing "S" is a distance of 50 mm to 90 mm. In this instance, the picks 16 would have a cutting edge of 21 of approximately 30 mm in length. Typically, the drum would have a rotational speed between 30 and 60 revolutions per minute. This would provide each pick 16 with approximately a tip speed between 1.76 and 3.52 metres per second.
The lacing pattern of Figure 5 is intended for a drum that is to engage hard rock. h this embodiment, the spacing "S" is 40 mm to 50 mm. Each pick 16 would have a cutting edge 21 with a length of about 10 mm.
The sections 25 and 26 would have picks 16 passing along cutting lines 32.

Claims

CLAIMS:
1. A continuous miner drum including: a generally cylindrical body having a longitudinal axis about which the drum rotates in a predetermined direction; a plurality of start vanes fixed to the body so as to extend outwardly therefrom away from said axis, each vane also extending longitudinally and angularly with respect to said axis; a plurality of picks fixed to each vane so as to be stationary with respect thereto, each pick having a leading face, a trailing face and side faces between which the leading and trailing faces extend, the leading and trailing faces converge away from said axis to a cutting edge, and wherein upon rotation of the drum each pick follows a cutting path with picks of adjacent paths being spaced by a longitudinal distance of between 30 mm and 100 mm measured between adjacent side faces of the picks of adjacent cutting paths.
2. The continuous miner drum of claim 1, wherein the drum is configured to mine coal, with the picks having a spacing of 50 mm to 90 mm.
3. The continuous miner drum of claims 1 or 2, wherein each pick has a cutting edge of a length of about 30 mm.
4. The continuous miner drum of claim 1, 2 or 3, wherein there is only one pick per cutting line.
5. The continuous miner drum of claim 1, 2, 3 or 4 wherein there is at least two picks per cutting line.
6. The continuous miner drum of any one of claims 1 to 5, wherein the vanes extend angularly about said axis at an angle between 10° and 30°.
7. A continuous miner drum substantially as hereinbefore described with reference to the accompanying drawings.
PCT/AU2004/000140 2003-03-14 2004-02-09 A mining lacing pattern Ceased WO2004081345A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2004219985A AU2004219985B2 (en) 2003-03-14 2004-02-09 A mining lacing pattern
US10/548,933 US20060255649A1 (en) 2003-03-14 2004-02-09 Mining lacing pattern
EP04709167A EP1604097A4 (en) 2003-03-14 2004-02-09 A mining lacing pattern

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003901176 2003-03-14
AU2003901176A AU2003901176A0 (en) 2003-03-14 2003-03-14 A mining lacing pattern

Publications (1)

Publication Number Publication Date
WO2004081345A1 true WO2004081345A1 (en) 2004-09-23

Family

ID=31500220

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2004/000140 Ceased WO2004081345A1 (en) 2003-03-14 2004-02-09 A mining lacing pattern

Country Status (8)

Country Link
US (1) US20060255649A1 (en)
EP (1) EP1604097A4 (en)
CN (1) CN1751170A (en)
AU (1) AU2003901176A0 (en)
RU (1) RU2319006C2 (en)
TW (1) TW200417673A (en)
WO (1) WO2004081345A1 (en)
ZA (1) ZA200505470B (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2016057964A1 (en) * 2014-10-10 2016-04-14 Joy Mm Delaware, Inc. Cutter head for longwall shearer
EP2554747A3 (en) * 2011-08-04 2016-10-12 BOMAG GmbH Milling rotor for processing soil material and soil cultivation machine with such a rotor
CN107143347A (en) * 2017-07-12 2017-09-08 徐工集团工程机械有限公司 Cutting head of roadheader and development machine
US10366177B2 (en) 2012-03-01 2019-07-30 Commonwealth Scientific And Industrial Research Organisation Cutting drum and method of designing a cutting drum

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US20090224596A1 (en) * 2008-03-07 2009-09-10 Cooper Mark R Cutting Elements Disposed On A Drum
CN102678114A (en) * 2011-03-12 2012-09-19 刘素华 Device for rolling and raking materials
US20150016884A1 (en) * 2013-07-15 2015-01-15 David R. Hall Milled Uniform Travel Surface
US10124509B2 (en) 2013-11-15 2018-11-13 Vermeer Manufacturing Company Cutting tooth system
US9909417B2 (en) * 2014-07-24 2018-03-06 Novatek Ip, Llc Angled degradation pick
WO2016015020A1 (en) * 2014-07-25 2016-01-28 Novatek Ip, Llc Block capable of supporting multiple picks
DE112015005089B4 (en) 2014-11-10 2024-08-14 Vermeer Manufacturing Company Edge cutting element for a rotating cutting roller
US9850755B2 (en) * 2015-07-10 2017-12-26 Joy Mm Delaware, Inc. Bit configuration for a cutter head
CN106677784A (en) * 2017-03-03 2017-05-17 胡沿东 Roller for mining mechanical equipment
CN106703810A (en) * 2017-03-03 2017-05-24 胡沿东 Mining machine
CN109139001A (en) * 2018-10-31 2019-01-04 攀枝花学院 Double-ended shearer for large-mining-height working surface
US10982397B2 (en) * 2019-06-12 2021-04-20 Caterpillar Paving Products Inc. Milling rotor
US11174604B1 (en) * 2020-07-14 2021-11-16 Caterpillar Paving Products Inc. Milling systems and methods for a milling machine
US20250129720A1 (en) * 2023-10-23 2025-04-24 Kennametal Inc. Block for holding a cutting bit

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GB2042028A (en) * 1979-02-14 1980-09-17 Whinfrey A F An improvement in or relating to coal cutter drums
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Publication number Priority date Publication date Assignee Title
EP2554747A3 (en) * 2011-08-04 2016-10-12 BOMAG GmbH Milling rotor for processing soil material and soil cultivation machine with such a rotor
US10366177B2 (en) 2012-03-01 2019-07-30 Commonwealth Scientific And Industrial Research Organisation Cutting drum and method of designing a cutting drum
EP2820242B1 (en) * 2012-03-01 2020-08-12 Commonwealth Scientific and Industrial Research Organisation A cutting drum and method of designing a cutting drum
WO2016057964A1 (en) * 2014-10-10 2016-04-14 Joy Mm Delaware, Inc. Cutter head for longwall shearer
US10036248B2 (en) 2014-10-10 2018-07-31 Joy Global Underground Mining Llc Cutter head for longwall shearer
CN107143347A (en) * 2017-07-12 2017-09-08 徐工集团工程机械有限公司 Cutting head of roadheader and development machine

Also Published As

Publication number Publication date
CN1751170A (en) 2006-03-22
EP1604097A4 (en) 2006-06-14
ZA200505470B (en) 2006-04-26
RU2319006C2 (en) 2008-03-10
AU2003901176A0 (en) 2003-03-27
US20060255649A1 (en) 2006-11-16
EP1604097A1 (en) 2005-12-14
TW200417673A (en) 2004-09-16
RU2005131835A (en) 2006-02-10

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