EP0143514A2 - Mineralienschrämwerkzeuge - Google Patents

Mineralienschrämwerkzeuge Download PDF

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Publication number
EP0143514A2
EP0143514A2 EP84305703A EP84305703A EP0143514A2 EP 0143514 A2 EP0143514 A2 EP 0143514A2 EP 84305703 A EP84305703 A EP 84305703A EP 84305703 A EP84305703 A EP 84305703A EP 0143514 A2 EP0143514 A2 EP 0143514A2
Authority
EP
European Patent Office
Prior art keywords
pick
shank
mineral
socket
inlet
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.)
Withdrawn
Application number
EP84305703A
Other languages
English (en)
French (fr)
Other versions
EP0143514A3 (de
Inventor
Henry Mcgaw Brown
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.)
Anderson Strathclyde PLC
Original Assignee
Anderson Strathclyde PLC
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 Anderson Strathclyde PLC filed Critical Anderson Strathclyde PLC
Publication of EP0143514A2 publication Critical patent/EP0143514A2/de
Publication of EP0143514A3 publication Critical patent/EP0143514A3/de
Withdrawn legal-status Critical Current

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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
    • E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles

Definitions

  • the invention relates to mineral cutter tools and more particularly but not exclusively to coal cutter picks of the kind adapted to be mounted on coal cutting machinery such as disc shearer drums, road heading machines or cutter chains.
  • a mining cutter tool having a tapered rectangular shank which is secured in position in its holder by means of a wedge, the front face of the tool shank being formed near to its end with a bore through which water is fed to the cutting face of the tool and a resilient sealing ring surrounding the bore to seal the bore against the holder.
  • the invention provides a mineral cutter pick adapted to be mounted on a mineral mining machine and to cut during translational movement in an endless path thereon which pick comprises a body having a parallel sided shank of rectangular cross-section for accommodation in a corresponding shaped recess on a support on a mineral cutting machine to mount the pick on the machine, the body having a forward end carrying a cutting tip and said body having a passage therethrough for liquid which leads from an inlet in a wall of the shank to at least one liquid outlet adjacent to the cutting tip, the shank being formed with a recess for accommodating a latch for securing the pick to its support, the arrangement being such that the liquid inlet in the pick shank is disposed between the latching recess and the forward end.
  • the inlet in the pick shank accommodates a resilient sealing member, e.g. of neoprene which provides a seal between a corresponding water passage opening into the socket and the pick shank, but whereas one might expect the mating passages in the socket and in the pick shank to be positioned such that they are forced together during use by the cutting forces e.g. in the position shown in GB 1062041, we prefer to position the liquid inlet high up on the front face of the pick shank (considered in the cutting direction of the pick) to keep the water passage through the pick as short as possible to avoid unnecessarily weakening the pick shank.
  • a resilient sealing member e.g. of neoprene which provides a seal between a corresponding water passage opening into the socket and the pick shank
  • the resilient sealing member preferably comprises a cylindrical portion formed at one end with an outwardly extending part spherical portion, the sealing member being pierced by an axial bore.
  • the inlet in the pick shank preferably communicates with a longitudinally extending passage in the pick shank which emerges in the vicinity of the cutting tip.
  • the passage may be arranged to emerge from the pick body immediately behind the cutting tip: If desired the longitudinally extending passage may be terminated by a member, e.g. of plastics, which forms the liquid into a jet or spray.
  • the invention comprises the combination of a mineral cutter pick as described above and a holder therefor.
  • Figure 1 is a cross-sectional side elevation of a mineral cutter pick in accordance with the invention, mounted in a holder on the face disc of a shearer drum mineral mining machine, and
  • FIG. 2 is a side view of a resilient sealing member.
  • a semi-forward attack coal cutter pick 1 comprising a body formed at its forward end 16 with a cutting tip 2 of a hard material such as tungsten carbide, the body being formed with a parallel sided rectangular section shank 3 arranged for reception in a correspondingly shaped socket 4 in a support 5 welded at 17 to the vane 6 of a mineral shearer drum (not shown).
  • the pick 1 is held in the socket 4 by a latching retainer generally indicated at 19, and as described in GB Patent Specification No. 1373655 of Austin Hoy & Company Limited, and for this purpose the opposite side faces of the pick shank are formed with transverse latching recesses 18.
  • a water conduit 7 is provided extending through the vane 6 of the mineral shearer drum, the conduit connecting with a conduit 8 which extends longitudinally through the holder 5 and connects with a transverse bore 11 which emerges into the socket 4 at a position near the top of the socket and in the front wall thereof, considered in the cutting direction of the pick indicated by the arrow A.
  • the mineral cutter pick 1 is formed with a transversely extending bore 10 in its shank 3 at a position between the latching recess 18 and the forward end 16 of the pick, which bore 10 aligns with the bore 11 in the holder when the pick is fully inserted in the socket so that shoulders 20 on the forward end 16 abut the holder 5.
  • the bore 10 connects with a longitudinally extending bore 9 in the pick which extends forwardly into the vicinity of the cutting tip 2 and emerges from the body of the pick behind the cutting tip 2, again considered in its direction of cutting.
  • the bore 10 is relatively large compared with the bore 11 to facilitate alignment therewith and also to accommodate a resilient neoprene sealing member 12 which comprises a cylindrical portion snugly received in the bore 10 and a part spherical end portion 14 which seals against the wall of the socket 4, the sealing member 12 being formed with an axial bore 15 through which the liquid passes between the bore 11 in the holder and the bore 10 in the pick.
  • the outer end of the bore 9 is provided with a nozzle 21 so that liquid issuing therefrom is formed into a jet or spray as desired.

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)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Knives (AREA)
EP84305703A 1983-09-02 1984-08-22 Mineralienschrämwerkzeuge Withdrawn EP0143514A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838323599A GB8323599D0 (en) 1983-09-02 1983-09-02 Mineral cutter tools
GB8323599 1983-09-02

Publications (2)

Publication Number Publication Date
EP0143514A2 true EP0143514A2 (de) 1985-06-05
EP0143514A3 EP0143514A3 (de) 1986-09-24

Family

ID=10548251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84305703A Withdrawn EP0143514A3 (de) 1983-09-02 1984-08-22 Mineralienschrämwerkzeuge

Country Status (6)

Country Link
EP (1) EP0143514A3 (de)
JP (1) JPS6092595A (de)
AU (1) AU3232484A (de)
GB (1) GB8323599D0 (de)
IN (1) IN161059B (de)
ZA (1) ZA846699B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113898340A (zh) * 2021-10-26 2022-01-07 三一重型装备有限公司 全喷嘴截割头和掘进机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1062041A (en) * 1963-01-25 1967-03-15 Coal Industry Patents Ltd Improvements in mining machine cutting means
AU458074B2 (en) * 1970-12-22 1975-02-20 Austin Hoy & Company Limited Improvement in tools and holders therefor
GB2113743B (en) * 1981-09-19 1985-01-16 Anderson Strathclyde Ltd Improvements in or relating to mineral cutter tools
GB2114627B (en) * 1982-02-09 1985-05-01 Padley And Venables Limited Mineral mining apparatus provided with dust suppressing means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113898340A (zh) * 2021-10-26 2022-01-07 三一重型装备有限公司 全喷嘴截割头和掘进机

Also Published As

Publication number Publication date
AU3232484A (en) 1985-03-07
EP0143514A3 (de) 1986-09-24
IN161059B (de) 1987-09-26
GB8323599D0 (en) 1983-10-05
JPS6092595A (ja) 1985-05-24
ZA846699B (en) 1985-04-24

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Effective date: 19870325

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Inventor name: BROWN, HENRY MCGAW