US3904246A - Rotary cutter heads for mineral mining machines - Google Patents

Rotary cutter heads for mineral mining machines Download PDF

Info

Publication number
US3904246A
US3904246A US440010A US44001074A US3904246A US 3904246 A US3904246 A US 3904246A US 440010 A US440010 A US 440010A US 44001074 A US44001074 A US 44001074A US 3904246 A US3904246 A US 3904246A
Authority
US
United States
Prior art keywords
air flow
cutter head
rotary cutter
hub assembly
flow guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US440010A
Other languages
English (en)
Inventor
John Albert Gandy
Albert Graham French
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Application granted granted Critical
Publication of US3904246A publication Critical patent/US3904246A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21C35/22—Equipment for preventing the formation of, or for removal of, dust
    • E21C35/23—Distribution of spraying-fluids in rotating cutter-heads
    • 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

  • ABSTRACT A rotary cutter head for mounting on a hollow drive shaft of a mineral mining machine comprises water powered, air flow inducing devices mounted remote from the axis of the rotary cutter head.
  • This invention relates to rotary cutter heads for mineral mining machines, the cutter heads being drivably mountable on rotary drive shafts of the machines and having cutter tools mounted around their outer peripheries for breaking mineral from working faces.
  • the hollow drive shaft was used for ventilation then it was necessary to adopt a less efficient dust suppression system and install the nozzles for dust suppression fluid on the body of the mining machine remote from the cutter tools.
  • the hollow drive shaft was used for dust suppression purposes it was necessary to adopt a less efficient ventilating system and mount the ventilator means remote from the cutter head.
  • An object of the present invention is to provide an improved cutter head for a mineral mining machine.
  • a rotary cutter head for a mineral mining machine having a drive shaft extending towards the working mineral face comprises a hub assembly drivably mountable on the drive shaft of the machine, a cylindrical component secured around the hub assembly, a plurality of cutter tool holders provided around the periphery of the cutter head. and ventilating means remote from the axis of rotation of the cutter head and including at least one air flow guide and an air flow inducing nozzle for directing fluid along the guide.
  • the air flow guide extends through the hub assembly forming a passage which extends between the machine side and the working face side of the hub assembly.
  • the nozzle may be arranged for directing fluid along the guide so that an air flow is induced away from the working face side of the hub assembly and in which case a baffle may be provided on the machine side of the air flow guide.
  • the nozzle may be arranged for directing fluid along the guide so that an air flow is induced away from the machine side of the hub assembly.
  • the ventilator means may be arranged to induce an air flow through the cylindrical component and in which case the air flow guide means may be carried on loading vanes secured around the cylindrical component.
  • the rotary cutter head comprises a plurality of air flow guides.
  • a distributor is provided for feeding fluid fed along the machine's drive shaft to each of the nozzles.
  • the cylindrical component provides a plurality of angularly spaced chambers and fluid is fed from the distributor to each of the chambers.
  • Advantageously fluid is fed from the chambers to dust suppression nozzles mounted on the cutter head.
  • the present invention also provides a rotary cutter head as defined above in combination with the mining machine.
  • FIG. 1 shows a perspective view partly in section of a first embodiment of rotary cutter head mounted on a mining machine (only part of which is shown);
  • FIG. 2 is a diagrammatic sectional view taken along the axis of rotation of a rotary cutter head which is con structed as the cutter head of FIG. I except that it is of opposite hand to that of FIG. I, i.e. in use. the head rotates in the opposite direction.
  • FIG. 3 is a diagrammatic sectional view taken along the line lIIIlI of FIG. 2;
  • FIG. 4 is a diagrammatic sectional view taken along the axis of rotation of a rotary cutter head constructed in accordance with a second embodiment of the present invention and showing part of the head only;
  • FIG. 5 is a diagrammatic sectional view taken along the axis of rotation of a rotary cutter head constructed in accordance with a third embodiment of the present invention.
  • FIG. 6 is a diagrammatic sectional view taken along the line VIVI of FIG. 5;
  • FIG. 7 is an incomplete diagrammatic sectional view taken along the axis of rotation of a rotary cutter head constructed in accordance with a fourth embodiment of the present invention, the cutter head being of the same hand to the cutter head of FIG. 1;
  • FIG. 8 is an incomplete diagrammatic sectional view taken along the axis of rotation of a rotary cutter head constructed in accordance with a fifth embodiment of the present invention.
  • FIG. 9 is an incomplete diagrammatic end view of the rotary cutter head of FIG. 8 with an end plate removed;
  • FIG. 10 is a perspective view of the end plate;
  • FIG. 11 is an incomplete diagrammatic sectional view taken along the axis of rotation of a rotary cutter head constructed in accordance with a sixth embodiment of the present invention.
  • FIGS. 1, 2 and 3 the first embodiment of rotary cutter head 1 is shown drivably mounted on a hollow drive shaft 2 of a coal mining machine 3 (only a part of which is shown) of the well known shearer type.
  • a shearer machine traverses to and fro along a longwall coal face with cutter tools 4 mounted around the periphery of the cutter head winning coal from the working face.
  • the broken coal is loaded by means of helical loading vanes 5 onto an armoured face conveyor [not shown) which extends along the face.
  • the cutter head 1 cuts the face it forms a buttock in the working face and thereby tends to be shielded from the main ventilation air flow along the face.
  • the cutter head 1 comprises a hub assembly 6 drivably mounted on the drive shaft 2 and retained in position by a spacer 7 and a key (not shown).
  • a cylindrical component 8 is secured around the huh assembly and forms a mounting platform for the helical loading vanes 5 which in turn support cutter tool holders 9 for the cutter tools 4.
  • the radially inner surface of the cylindrical component is provided with a plurality of elongated, angularly spaced plates 10 forming chambers 11, the ends of which are closed by end plates 12.
  • the chambers 11 extend across substantially the whole of the cutter head and enable pipe connections 13 to be made to virtually any part of the cylindrical component from a plurality of nozzles 14 for dust suppression fluid provided adjacent to the cutter tool holders 4.
  • the rotary cutter head 1 also comprises ventilator means constituted by a plurality of air flow guides 15, each of which is formed by two plates 16 provided on the radially inner surface of the cylindrical component between two adjacent elongated plates 10 and extending from the machine side of the hub assembly to the working face side of the hub assembly.
  • ventilator means comprises seven air flow guide means, the number could vary from one to more than seven depending upon the amount of induced ventilation required.
  • Air flow inducing nozzles 17 are provided for direct ing fluid along the air flow guide 15, respectively, each of the nozzles being mounted adjacent to the wall of the air flow guide and arranged to direct the fluid along the air flow guide so that an air flow is induced away from the working face and towards the machine.
  • a baffle 18 in the form of an annular perforated screen is provided on the cylindrical component 8 so as to extend across the outlets of the air flow guides.
  • the rotary cutter head 1 is provided with distribution means 20 for the dust suppression fluid.
  • the distribution means comprises a tube 21 which is located within the bore of the hollow drive shaft 2 and which in use does not rotate with the cutter head and a distributor 22 located on the end of the drive shaft 2 and secured to the hub assembly 6 by bolts 23.
  • the distributor 22 provides a chamber 24 and passages 25 which interconnect the bore of the tube 21 to distribution pipes 26 which feed fluid to the chambers ll and to the air flow inducing nozzles 17.
  • a conical cover plate 29 is secured by brackets 31 (only one of which is shown) to the cylin drical component 8 to protect the fluid distribution and ventilator means from being damaged by broken mineral.
  • air flow guide means in the form of an annu lar plate 32 and an extractor duct 33 are provided on the body of the machine 3 for extracting air away from the rotary cutter head.
  • An extraction fan (not shown) is secured to the extraction duct 33.
  • the distribution means may be provided with a component which is mounted on the end of the tube 21 within the chamber 24 and which selectively feeds fluid to only those distribution pipes 26 currently within a preselected sector e.g. to only those distribution pipes 26 within the cutting Zone of the rotating cutter head.
  • Fluid is fed from the chambers 11 along the pipes 13 to the dust suppression noz7les adjacent to the cutter tools 10 associated with the cutting zone.
  • the water is directed from these nozzles towards the cutting tools to suppress the dust produced by the breaking mineral.
  • the first embodiment of the present invention provides a rotary cutter head which continuously enables a high dust suppression efficiently to be achieved and which enables the zone around the head to be continuously ventilated. Any methane discharged from the broken coal is extracted from adjacent the cutter head and discharged into the main ventilation air stream. Thus, dangerously high concentrations of methane tend to be prevented from forming in the vicinity of the cutting zone.
  • FIG. 4 shows a second embodiment of rotary cutter head 1 in which the air flow inducing nozzles l7 (only one of which is shown) of the ventilator means are arranged to direct fluid along the air flow guides 15 in a direction towards the working face.
  • the air flow inducing nozzles l7 (only one of which is shown) of the ventilator means are arranged to direct fluid along the air flow guides 15 in a direction towards the working face.
  • the air flow discharging from the air flow guides 15 is directed towards the cutting zone via the annular gap 34 between the cylindrical component 8 and conical cover plate 29.
  • the air flow enters the zone adjacent to the working face. scrubbing the working face and tending to remove substantially all the methane discharged from the broken coal and from the freshly formed working face.
  • the second embodiment of rotary cutter head provides very efficient means for ventilating the zone adjacent to the cutter head. Dust suppression is achieved by the nozzles 14 arranged adjacent to the cutter tools 4 and also by the fluid discharged from the nozzles 17 which flows with the induced air flow through the annular gap 34 towards the cutting zone.
  • FIGS. 5 and 6 show the third embodiment of rotary cutter head which is similar to the first embodiment of cutter head described with reference to FIGS. I, 2 and 3 but which has additional ventilator means mounted on the helical loading vanes 5 so as to induce an air flow through the cylindrical component towards the hub assembly.
  • the additional ventilator means comprises a plurality of radial hollow members 40. each of which extends through the cylindrical component 8 to provide a passage extending from a window 4I formed in the wall of the member to the zone adjacent to one of the air flow guides 15.
  • An air flow inducing nozzle 42 is provided within each of the members 40 and arranged to direct fluid towards the adjacent air flow guide IS.
  • the radially outer end of each of the members 40 is closed and fluid is fed to the nozzles 42 from the chambers 11 via passages 13 extending radially along the loading vanes S.
  • an air flow is induced away from the cutting zone of the cutter head, the flow tending to ventilate the zone around the head and preventing methane from forming danger ously high concentrations within this zone.
  • FIG. 7 shows a fourth embodiment of rotary cutter head constructed in accordance with the present invention.
  • ventilator means are provided on radial surfaces adjacent the helical loading vanes 5.
  • the ventilator means comprise a plurality of hollow members which are somewhat similar to the members 40 of the third embodiment previously described with reference to FIGS. 5 and 6 but which instead of extending through the cylindrical component 8 are arranged to guide an induced air flow adjacent the outer surface of the cylindrical component towards the machine side of the cutter head.
  • the members 50 are L shaped but in modified constructions the members may be curved or inclined with re spect to the radial direction of the cutter head.
  • the members 50 may extend to the machine side of the cutter head or alternatively may extend adjacent to only a portion of the loading vanes.
  • the ventilation means may comprise only one member 50.
  • one member 50 may be provided on each loading vane.
  • more than one mem ber 50 may be provided on each of the loading vanes.
  • FIGS. 8, 9 and It show a fifth embodiment of rotary cutter head in which the air flow inducing nozzles I7 of the ventilator means are arranged to direct fluid along the air flow guides 15 in a direction away from the working face and towards the body of the mining machine (not shown ⁇ .
  • the dust laden air is induced through passages (see FIGS.
  • each of the passages 60 is provided with a shield arranged over the passage to defme an access to the passage which faces in a direction transverse to the axis of rotation of the rotary cutter head and in the direction opposed to the direction of rotation of the rotary cutter head.
  • a shield arranged over the passage to defme an access to the passage which faces in a direction transverse to the axis of rotation of the rotary cutter head and in the direction opposed to the direction of rotation of the rotary cutter head.
  • the air flow inducing nozzles 17 are fed With fluid from ducts 65 formed adjacent to the loading vanes 5 (omitted from FIG. 9).
  • the nozzles are removable from the cylindrical component 8 to enable them to be easily cleaned or unblocked during use.
  • the ventilating means comprise three air flow guides 15 equally spaced around the inner periphery of the cylindrical component 8.
  • the cover plate 6] has been removed to expose the hub 6.
  • the zone between the hub 6 and the cover plate 61 is divided into three equal compartments 66 by radial fins 67 secured to the hub 6 and to the inner periphery of the cylindrical component 8, and an annular plate 68 secured to the hub 6.
  • the fins 67 sealably engage resilient pads 69 ⁇ see FIG. 8) secured to the cover plate 6] and a sealing ring 7" abuts the end of the annular ring 68.
  • the three comp-art ments are separate from one another and if any one of the air flow guides should become inoperative (for example due to a blocked nozzle 17) there is little or no possibility of the induced air flow being recirculated between the operative and the non-operative air flow guides.
  • FIG. 11 shows a sixth embodiment of rotary cutter head in which the air flow inducing nozzles 17 (only one of which is shown) of the ventilator means are arranged to direct fluid along the air flow guide 15 in a direction towards the working face to ventilate the cutting zone of the cutter head.
  • the induced air flow passes through the annular space 34 towards the outer periphery of the cutter head.
  • the present invention provides simple. reliable means for ventilating the zone adjacent to a rotary cutter head and for suppressing dust generated during cutting.
  • a rotary cutter head for a mineral mining machine having a drive shaft extending towards the working mineral face. comprising a hub assembly drivably mountable on the said drive shaft of the machine, a cy lindrical component secured around the hub assembly, a plurality of cutter tool holders provided around the periphery of the cutter head, and ventilating means re mote from the axis of rotation of the cutter head and including air flow guide means and air flow inducing nozzle means for directing fluid along the said air flow guide means.
  • a rotary cutter head as claimed in claim I in which the ventilator means is arranged to induce an air flow through the cylindrical component.
  • a rotary cutter head as claimed in claim 1, comprising a distributor for feeding fluid fed along the machines drive shaft to the air flow inducing nozzle means.
  • a rotary cutter head as claimed in claim 4 comprising dust suppression nozzle means, the fluid being fed from one of the said chambers to the air flow inducing nozzle means and to the dust suppression nozzle means.
  • a rotary cutter head as claimed in claim 8 in which a baffle is provided on the machine side of the air flow guide means.
  • a rotary cutter head for a mineral mining machine having a drive shaft extending towards the working mineral face comprising a hub assembly drivably mountable on the said drive shaft of the machine, a cylindrical component secured around the hub assembly, a plurality of cutter tool holders provided around the periphery of the cutter head, ventilating means remote from the axis of rotation of the cutter head and including air flow guide means and air flow inducing nozzle means for directing fluid along the said air flow guide means, and an air flow guide plate assembly provided on the working face side of the hub assembly.
  • a rotary cutter head as claimed in claim 10 in which the air flow guide plate assembly comprises a circular plate defining an annular passage adjacent to the inner periphery of the cylindrical component 12.
  • a rotary cutter head for a mineral mining machine having a drive shaft extending towards the working mineral face comprising a hub assembly drivably mountable on the said drive shaft of the machine, a cylindrical component secured around the hub assembly, a plurality of cutter tool holders provided around the periphery of the cutter head, and ventilating means including a plurality of air flow guides angularly spaced around the cutter head, each of the air flow guides having an air flow inducing nozzle, the zone between the hub assembly and a circular plate being divided into a plurality of compartments, each compartment being associated with one of the air flow guides.
  • a mineral mining machine having a drive shaft extending towards the working face, and a rotary cutter head comprising a hub assembly drivably mounted on the said drive shaft, a cylindrical component secured around the hub assembly, a plurality of cutter tool holders provided around the periphery of the cutter head, and ventilating means remote from the axis of rotation of the cutter head and including air flow guide means and air flow inducing nozzle means for directing fluid along the said air flow guide means.

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US440010A 1973-02-09 1974-02-06 Rotary cutter heads for mineral mining machines Expired - Lifetime US3904246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB643773A GB1414917A (fr) 1973-02-09 1973-02-09

Publications (1)

Publication Number Publication Date
US3904246A true US3904246A (en) 1975-09-09

Family

ID=9814471

Family Applications (1)

Application Number Title Priority Date Filing Date
US440010A Expired - Lifetime US3904246A (en) 1973-02-09 1974-02-06 Rotary cutter heads for mineral mining machines

Country Status (3)

Country Link
US (1) US3904246A (fr)
FR (1) FR2217523B1 (fr)
GB (1) GB1414917A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954302A (en) * 1974-01-18 1976-05-04 Coal Industry (Patents) Limited Apparatus for ventilating cutter heads of mineral mining machines
US4022286A (en) * 1975-09-05 1977-05-10 Leeco, Inc. Auger
US4087131A (en) * 1976-11-01 1978-05-02 Rapidex, Inc. Drag bit excavation
US4218095A (en) * 1978-02-23 1980-08-19 Centrainy Osrodek Projektowo-Konstrukoyjny Maszyn Gorniczych "KOMAG" Mining unit of coal combines
US4471997A (en) * 1981-07-03 1984-09-18 Krampe & Co., Fertigung In Bergbaubedarf Gmbh Method for depositing dust during hydraulicking of minerals by a cutter roller of a mining machine
US4501449A (en) * 1981-10-13 1985-02-26 Coal Industry (Patents) Limited Fluid supply for rotary cutter heads for mining machines
US4516807A (en) * 1981-10-13 1985-05-14 Coal Industry (Patents) Limited Fluid supply systems for rotary cutter heads for mining machines and rotary cutter heads comprising fluid supply systems
US4521058A (en) * 1981-10-13 1985-06-04 Coal Industry (Patents) Limited Rotary cutter heads for mining machines
US4533180A (en) * 1981-10-13 1985-08-06 Coal Industry (Patents) Ltd. Fluid supply system for rotary cutter heads for mining equipment and to mining machines comprising rotary cutter heads having fluid supply systems
US4568128A (en) * 1983-01-11 1986-02-04 Coal Industry (Patents) Ltd. Rotary cutter heads for mineral mining machines
US4836613A (en) * 1984-10-09 1989-06-06 Adam Roger F J Cutterhead for water jet assisted cutting
US5145236A (en) * 1991-05-06 1992-09-08 Shell Oil Company Method and apparatus for controlling dust produced by a continuous miner
US20160024919A1 (en) * 2014-07-25 2016-01-28 Novatek Ip, Llc End Ring Degradation Pick Support
US10036248B2 (en) 2014-10-10 2018-07-31 Joy Global Underground Mining Llc Cutter head for longwall shearer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929910A1 (de) * 1979-07-24 1981-02-19 Heinz Ing Grad Hoelter Beduesungsanordnung fuer bergebrechanlagen, vorzugsweise fuer den einsatzbereich im untertaegigen bergbau
DE3049146C2 (de) * 1980-12-24 1984-05-10 Friedrich Wilhelm 4230 Wesel Paurat Schrämwalze mit Sprühdüsen, welche in Bedüsungssektoren aufgeteilt ist
ZA8330B (en) * 1983-01-04 1983-11-30 Krampe & Co Rock cutting drum for a winning machine in mining in particular in underground coal mining
CN107339102B (zh) * 2017-06-05 2023-10-27 太原科技大学 一种新型采煤机螺旋滚筒

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2327497A (en) * 1940-12-07 1943-08-24 Linde Air Prod Co Apparatus for working mineral materials and the like
US3422913A (en) * 1966-11-10 1969-01-21 Val Dev Corp Du Earth digging and conveying apparatus
US3603644A (en) * 1969-04-15 1971-09-07 Harold C Mccleery Mining ventilation apparatus and method
US3747982A (en) * 1970-07-24 1973-07-24 Coal Industry Patents Ltd Rotary cutter for mining with fluid supply chambers
US3827755A (en) * 1971-12-11 1974-08-06 Fletcher Sutcliffe Wild Ltd Drum type rotary coal cutter with water jet orifices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2327497A (en) * 1940-12-07 1943-08-24 Linde Air Prod Co Apparatus for working mineral materials and the like
US3422913A (en) * 1966-11-10 1969-01-21 Val Dev Corp Du Earth digging and conveying apparatus
US3603644A (en) * 1969-04-15 1971-09-07 Harold C Mccleery Mining ventilation apparatus and method
US3747982A (en) * 1970-07-24 1973-07-24 Coal Industry Patents Ltd Rotary cutter for mining with fluid supply chambers
US3827755A (en) * 1971-12-11 1974-08-06 Fletcher Sutcliffe Wild Ltd Drum type rotary coal cutter with water jet orifices

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954302A (en) * 1974-01-18 1976-05-04 Coal Industry (Patents) Limited Apparatus for ventilating cutter heads of mineral mining machines
US4022286A (en) * 1975-09-05 1977-05-10 Leeco, Inc. Auger
US4087131A (en) * 1976-11-01 1978-05-02 Rapidex, Inc. Drag bit excavation
US4218095A (en) * 1978-02-23 1980-08-19 Centrainy Osrodek Projektowo-Konstrukoyjny Maszyn Gorniczych "KOMAG" Mining unit of coal combines
US4471997A (en) * 1981-07-03 1984-09-18 Krampe & Co., Fertigung In Bergbaubedarf Gmbh Method for depositing dust during hydraulicking of minerals by a cutter roller of a mining machine
US4501449A (en) * 1981-10-13 1985-02-26 Coal Industry (Patents) Limited Fluid supply for rotary cutter heads for mining machines
US4516807A (en) * 1981-10-13 1985-05-14 Coal Industry (Patents) Limited Fluid supply systems for rotary cutter heads for mining machines and rotary cutter heads comprising fluid supply systems
US4521058A (en) * 1981-10-13 1985-06-04 Coal Industry (Patents) Limited Rotary cutter heads for mining machines
US4533180A (en) * 1981-10-13 1985-08-06 Coal Industry (Patents) Ltd. Fluid supply system for rotary cutter heads for mining equipment and to mining machines comprising rotary cutter heads having fluid supply systems
US4568128A (en) * 1983-01-11 1986-02-04 Coal Industry (Patents) Ltd. Rotary cutter heads for mineral mining machines
US4836613A (en) * 1984-10-09 1989-06-06 Adam Roger F J Cutterhead for water jet assisted cutting
US5145236A (en) * 1991-05-06 1992-09-08 Shell Oil Company Method and apparatus for controlling dust produced by a continuous miner
US20160024919A1 (en) * 2014-07-25 2016-01-28 Novatek Ip, Llc End Ring Degradation Pick Support
US9803479B2 (en) * 2014-07-25 2017-10-31 Novatek Ip, Llc End ring degradation pick support
US10036248B2 (en) 2014-10-10 2018-07-31 Joy Global Underground Mining Llc Cutter head for longwall shearer

Also Published As

Publication number Publication date
GB1414917A (fr) 1975-11-19
FR2217523A1 (fr) 1974-09-06
FR2217523B1 (fr) 1977-09-23

Similar Documents

Publication Publication Date Title
US3904246A (en) Rotary cutter heads for mineral mining machines
US3747982A (en) Rotary cutter for mining with fluid supply chambers
US5518299A (en) Dust control apparatus for longwall mining machinery
GB1264632A (fr)
CA1189786A (fr) Depoussiereur pour haveuse longue taille
US4076315A (en) Dust abatement device and method of dust abatement
US3700284A (en) Underframes for longwall mineral mining machines
US3784256A (en) Dust control in longwall mining
US4022286A (en) Auger
US4516807A (en) Fluid supply systems for rotary cutter heads for mining machines and rotary cutter heads comprising fluid supply systems
US3954302A (en) Apparatus for ventilating cutter heads of mineral mining machines
US4428619A (en) Rotary cutter heads for mining machines
US4568128A (en) Rotary cutter heads for mineral mining machines
US3843199A (en) Apparatus for ventilating and providing dust suppression fluid to cutter-heads of mineral mining machines
US5407253A (en) Water spray ventilator system for continuous mining machines
US4465318A (en) Rotary cutting head for mining machines with means for inducing airflow and sensing thereof
US4521058A (en) Rotary cutter heads for mining machines
EP2789796A1 (fr) Unité de filtrage de machine d'exploitation minière avec absorbeur de sons
EP0409498A2 (fr) Installation de broyage ayant une cuve rotative et des segments de canalisation du flux d'air démontables
US2749104A (en) Auger drill head
US4934614A (en) Rotary grinding apparatus with secondary grinding chamber section
US1569561A (en) Machine for grinding grain
CA1160648A (fr) Tambour de havage et methode d'abattage des poussieres
DE2405583C2 (de) Drehbarer Schneidkopf für eine Gewinnungsmaschine im untertägigen Bergbau
US4501449A (en) Fluid supply for rotary cutter heads for mining machines