EP0010536A1 - Dispositif pour refroidir les outils d'une tête de havage et du front de creusement et pour empêcher la formation de poussière - Google Patents

Dispositif pour refroidir les outils d'une tête de havage et du front de creusement et pour empêcher la formation de poussière Download PDF

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Publication number
EP0010536A1
EP0010536A1 EP79890040A EP79890040A EP0010536A1 EP 0010536 A1 EP0010536 A1 EP 0010536A1 EP 79890040 A EP79890040 A EP 79890040A EP 79890040 A EP79890040 A EP 79890040A EP 0010536 A1 EP0010536 A1 EP 0010536A1
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EP
European Patent Office
Prior art keywords
cutting
chisels
nozzles
rows
directed
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Withdrawn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
EP79890040A
Other languages
German (de)
English (en)
Inventor
Alfred Zitz
Otto Dipl.-Ing. Schetina
Herwig Wrulich
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.)
Voestalpine AG
Original Assignee
Voestalpine AG
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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0010536A1 publication Critical patent/EP0010536A1/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention now relates to a device for cooling the chisel and the working face when on a pivotable cutter arm about a transverse to the longitudinal direction of the same, substantially horizontal axis rotatable cutter heads, the direction of rotation is preferably selected so that the chisel on the Moving the face facing the face of the cutting heads from top to bottom using water nozzles, with a cutting head mounted on both sides of the cutting arm, which is equipped with chisels, which are arranged in rows extending around the cutting head, several in each row Chisels are arranged, and the individual rows are axially spaced apart.
  • the object of the invention is to achieve adequate cooling of the chisels and the working face as well as adequate binding of the dust arising during the cutting work with the lowest possible water consumption.
  • the invention consists essentially in the fact that two groups of nozzles are arranged on the cutting arm for each cutting head, of which the nozzles of the first group are directed towards the rows of chisels lying in planes perpendicular to the cutting head axis in the area of the highest position of the chisels, and Nozzles of the other group are directed to the gaps between the rows of chisels in the area of the highest position of the chisels, that the water supply to each of the two nozzle groups assigned to one cutting head can be shut off separately and that the water supply to the nozzles assigned to the one cutting head Sen groups can be shut off separately from the water supply to the nozzle groups assigned to the other cutting head.
  • the cutting is carried out in essentially horizontal rows of cuts, with the successive rows of cuts alternating from right to left and left to right.
  • the feed from one row of cutters to the other takes place either from top to bottom or from bottom to top.
  • the feed from one row of cuts to the other takes place either to the right or to the left.
  • the direction of rotation is preferably selected so that the chisels work from top to bottom on the side of the cutting head facing the working face. In this case, the following applies.
  • the chisels work in the upper quarter of the cutting head, ie when working with "degressive chip", then those nozzle groups are effective whose nozzles are directed against the row of chisels themselves.
  • the water jet hits this chisel. If this chisel is moved further, the water jet hits the groove cut by this chisel until the next chisel reaches the highest position and is caught by the water jet. The water flows through the groove cut by the chisel and cools the chisel and the face.
  • the different chisels on a cutter head are subjected to different loads.
  • Auxiliary cutting chisels are those chisels which are arranged at the two ends of the cutting head on a smaller diameter.
  • the main cutting chisels are those chisels which are arranged essentially at the largest diameter of the cutting head. According to the invention, it is only necessary to direct the nozzles of the different nozzle groups towards the main cutting tool or the gaps between them.
  • the auxiliary cutting tools can be cooled in a different way, for example by hand.
  • a common nozzle of the first nozzle group can be directed towards the closely adjacent chisel rows, while the nozzles of the second group only focus on the gaps can be directed between the chisels lying next to each other at a greater axial distance.
  • the nozzles directed to the rows of chisels are expediently directed to the tip region of the chisels in the highest position thereof and the nozzles directed to the spaces between the rows of bits are directed to the base of these spaces. It is thereby achieved that the jets of the nozzles directed at the chisel rows, as soon as the chisel in question is moved further, directly into the groove cut by this chisel and that the jets from the nozzles directed at the gaps between the chisel rows reach the back as far as possible Local face.
  • a separate water supply line is expediently provided for each nozzle group, to which all nozzles of the group in question are connected and into which a shut-off element is switched on.
  • shut-off devices can now be controlled depending on whether one is working with “degressive chip” or whether one is working with “progressive chip”, and at the same time depending on whether the right cutting head or the left cutting head is working.
  • shut-off devices can also be switched on one after the other in the line, the one shut-off device being controlled as a function of whether "degressive” or “progressive chip” is used, and the other shut-off devices are controlled as a function of whether the right or the left Schrämkopf works.
  • the water supply to a nozzle group is only released when both shut-off devices, which are switched on in the relevant line, are open.
  • the actuation of the shut-off elements can be derived from the swivel drive of the cutting arm.
  • the arrangement is such that in cutting machines in which the swiveling drive of the cutting arm is hydraulic, the shut-off elements for the first nozzle groups, the nozzles of which are directed towards the rows of chisels, are closed as a function of an increase in pressure in that hydraulic one Cylinder takes place, which causes the cutting arm to pivot downwards, and the shut-off elements for the second nozzle groups, the nozzles of which are directed at the gaps between the rows of chisels, are closed depending on a pressure increase in the hydraulic cylinder which pivots the cutting arm after causes above and / or that the closure of the shut-off devices for the nozzle groups assigned to the right cutting head in Depending on a pressure increase in the hydraulic cylinder which causes the cutting arm to pivot to the left and the shut-off elements for the nozzle groups assigned to the left cutting head are closed as a function of a pressure
  • the hydraulic units causing this swivel drive of the cutting arm are loaded by the working pressure.
  • This working pressure provides information about which cutting head is working and whether it is working with "degressive” or with “progressive” chip. If the direction of rotation is selected so that the chisels facing the working face work from top to bottom, the cutter arm is loaded when working with “degressive chip” in the downward direction and when working with “progressive chip” in the upward direction, whereby the increase in pressure of the hydraulic medium in the cylinder in question results.
  • the shut-off devices can now be controlled automatically depending on this pressure increase. When the cutter head is inserted into the rock, all the chisels on both cutter heads work.
  • the shut-off devices controlling the water supply to the various nozzle groups can be, for example, diaphragm valves, the diaphragms of which are acted upon by the pressure in the relevant hydraulic cylinders of the inclined drive.
  • the shut-off elements are formed by axially displaceable control pistons, the working spaces of which are connected to the working spaces of the hydraulic cylinders effecting the swiveling drive of the cutting arm.
  • the control piston (s) controlling the water supply to the right and left cutting heads are expediently connected in series with the control piston (s) controlling the water supply to the first and second nozzle groups. This has the advantage that it can be found with three control pistons. By means of a spring, these control pistons can be pressed into a position in which they completely block the passage of water.
  • the nozzles are arranged in a nozzle carrier fixed to the cutting arm, which partially overlaps the cutting heads. As a result, the nozzles are brought into close proximity to the face, which means that the available water quantities can be better used.
  • the nozzles are expediently dimensioned for an exit speed of approximately 60 m / s at a supply pressure of approximately 35 bar.
  • FIG. 1 and 2 show the overall arrangement of the cutting machine with the cutting arm and the cutting heads in elevation and plan.
  • Fig. 3 shows a plan view of the two cutting heads on a larger scale than Fig. 1 and 2 when cutting with "degressive chip”.
  • Fig. 4 shows a side view of a cutting head when cutting with "degressive chip”.
  • Fig. 5 shows a side view of a cutting head when cutting with "progressive chip”.
  • Fig. 6 shows a diagram of the nozzles and the chisels of a cutting head when cutting with "degressive chip”.
  • 7 shows the equipping of a cutting head with a chisel, only one half of the cutting head being shown - in axial section.
  • 8 shows the circuit diagram for the water distribution.
  • Fig. 9 shows another scheme for water distribution.
  • the cutting machine 1 has a cutting arm 2 which can be pivoted from top to bottom about a horizontal axis 3 and laterally about a vertical axis 4.
  • the arrow 7 shows the direction of rotation of the cutting heads.
  • a nozzle carrier 8 is fixed, which partially overlaps the cutting heads in plan and carries the various nozzle groups.
  • the working face is designated by 9, the part of the working face which has not yet been cut out being designated by 9 'in FIG. 1.
  • the cutting is carried out in horizontal rows of cuts, the cutting arm being pivoted about the axis 4.
  • the cutting arm is pivoted upwards in the direction of arrow 10.
  • the chisels thus enter the rock at point 11 and emerge from the rock at approximately point 12.
  • the chisels work with "degressive chip”.
  • Fig. 3 the two cutting heads 6 and 6 'are shown in plan view, the dashed line 13 representing the envelope of the chisel tips.
  • the rows of chisels 14 are indicated in dash-dotted lines.
  • the nozzle holder 8 is fixed on the cutter arm 2.
  • the nozzle carrier 8 there are also second groups of nozzles 16 and 16 ', which are directed towards the spaces 17 and 17' between the rows of chisels.
  • the nozzles assigned to the right cutting head 6 are again identified by 16 and the nozzles assigned to the left cutting head 6 'by 16'.
  • the part 9 'of the working face which has not yet been cut off is indicated by a wavy line.
  • the water supply to the nozzles takes place via a pressure line 18, which opens into a distribution box 19.
  • Lines 20, 21, 22 and 23 are led away from the distribution box.
  • the line 20 leads to the nozzles 15 ', which are assigned to the left cutting head 6' and are directed towards the rows of chisels 14 '.
  • the line 21 leads to the nozzles 16 ', which are assigned to the left cutting head 6' and are directed towards the spaces 17 'between the rows of chisels.
  • the line 22 leads to the nozzles 15 assigned to the right cutting head 6, which are directed towards the rows 14 of chisels.
  • the line 23 leads to the nozzles 16 assigned to the right cutting head 6, which are directed towards the spaces 17 between the rows of chisels 14. Valves for the lines 20, 21, 22, 23 are arranged in the distribution box 19.
  • FIG. 4 and 5 schematically show a side view of the right cutting head 6 in the working position. Hiebei shows Fig. 4 working with “degressive chip” and Fig. 5 working with “progressive chip”. In both figures only a chisel 24 is shown with the chisel holder 25. The direction of rotation of the cutting head 6 is again indicated by the arrow 7.
  • Fig. 4 shows working with "degressive chip”.
  • the "degressive span” is indicated at 26.
  • the face that has already been ripped off is again designated 9 and the part of the face that has not yet been ripped off is designated 9 '.
  • the cutting arm must therefore be pushed up in the direction of arrow 10.
  • the chisel enters the rock at point 11.
  • the thickness of the chip is therefore greatest at the entry point and the chip runs degressively to the point 27, which is approximately at the height of the axis 5, at which the chisel emerges from the rock.
  • the nozzles 15 are in effect and the water jet 28 is directed directly against the tip of the bit 24. As soon as this chisel has moved on, this beam 28 is directed directly into the groove from which the chip 26 was worked out.
  • Fig. 5 shows working with "progressive chip”. This "progressive span” is indicated at 29.
  • the part 9 "of the working face 9 has already been cut.
  • the part 9 'of the working face 9 must first be cut.
  • the cutting arm must therefore be pressed down in the direction of the arrow 10'.
  • the chisels now enter the rock at position 30 and emerge from the rock at point 31, so that the thickness of the chip 29 increases progressively, the nozzles 16 must now come into effect while the nozzles 15 are inactive, and the water jet 32 emerging from these nozzles must therefore be as possible be directed close to the point 30 and this beam is thus directed into the spaces 17 between the rows of chisels 14, specifically to the bottom 33 of these spaces.
  • Fig. 6 shows graphically the work with "degressive chip".
  • the chisels 24 with the chisel holders 25 are all twisted into the same position for the sake of clarity.
  • the part of the working face to be cut is again designated 9 '.
  • the grooves cut by the chisel 24 are denoted by 34. It is now the nozzles 15 in effect which spray the jets 28 directly against the chisel 24 and into the grooves 34 while the nozzles 16 are switched off.
  • FIG. 7 shows an example of a cutting head in axial section, only one half of this axial section being shown.
  • Rows of chisels 35, 36, 37, 38, 39 and 40 are provided which lie in planes perpendicular to the cutting axis 5. For example, four such chisels can be provided in each row, so that the same picture results again with every quarter turn of the cutting head.
  • These chisel rows 35 to 40 are the main cutting chisels.
  • a common nozzle is directed to rows 35 and 36, a common nozzle to rows 37 and 38 and a common nozzle to rows 39 and 40, since the The divergence of the spray scatter is so large that a spray jet covers both rows of chisels that are close together.
  • the nozzles of the second group are directed only against the spaces 43 and 44, which remain between the rows which are adjacent to one another at greater intervals. If necessary, spray jets of the second group can also be directed onto the spaces 45 remaining laterally.
  • FIG. 8 shows the circuit diagram of the distributor unit housed in the distributor box 19 shown in FIG. 3.
  • a high pressure pump 46 feeds the water under high pressure via line 18.
  • 47 is a valve with a distributor piston 48, which is formed with a control groove 49.
  • the left working space 50 of the distributor piston 48 is connected via a line 51 to that working space of the hydraulic cylinder which is pressurized when the cutting arm is pivoted upward.
  • the cutting heads work with degressive chip and therefore the nozzles of the first nozzle group directed at the chisel rows must be supplied with water.
  • the distributor piston 48 is pushed to the right and the control groove 49 connects the pressure line 18 to a line 52.
  • the cutting head When the cutting arm is pivoted downwards, the cutting head works with progressive chip.
  • the nozzles of the second group which are directed to the spaces between the rows of chisels, must therefore be supplied with water.
  • the right-hand working space 54 of the distributor piston 48 is connected via a line 53 to that hydraulic cylinder which is pressurized when the cutting arm is pivoted downward. If the line 53 is under pressure, the distributor piston 48 is shifted to the left and the control groove 49 connects the pressure line 18 to the line 55. The water distribution is thus onto the nozzles of the first group and up the nozzles of the second group.
  • valves 56 and 57 with control pistons 58 and 59 which again have control grooves 60 and 61.
  • These control pistons now connect the lines 52 and 55 to the lines 20 and 21, which are assigned to the left cutting head, or in the other position of the control piston to the lines 22 and 23, which are assigned to the right cutting head.
  • the cutter arm is pivoted to the left, only the left cutter head works. The water must therefore be distributed to the nozzle groups assigned to the left cutting head.
  • Via a line 62, the right working spaces 63 and 64 are now connected to the hydraulic cylinder which is under pressure when the cutting arm is pivoted to the left.
  • the two control pistons 58 and 59 are therefore shifted to the left, and line 55 is connected to line 20 and line 52 is connected to line 21.
  • the corresponding nozzle group is connected to the pressure line 18 as a function of the pressure occurring in the hydraulic cylinders when the cutter arm is pivoted.
  • a preselection takes place through the valve 47, so to speak, depending on whether the first nozzle group or the second nozzle group is to be supplied with water, and the distribution to the left and right cutting heads is then carried out by the two valves 56 and 57 assigned nozzle groups.
  • Fig. 9 a circuit diagram for the water distribution is shown, which is suitable for all operating conditions. 8 have been largely retained in this illustration.
  • the high-pressure pump 46 draws the water from a reservoir 68 and is driven by a drive motor 69.
  • the conveyed water is conveyed via the pressure line 18 to the valve 47, which is shown in the middle position in the illustration according to FIG. 9, in which no water is conveyed through the spray nozzles.
  • the pressurized water is conveyed in a circle back to the water reservoir 68 via a line 70, so that the occurrence of excess pressure in the lines is avoided.
  • the valve 47 is acted upon via the line 51 and is shifted to the right into a first operating position in which it engages.
  • the pressurized water line 18 is connected to line 55, which leads to a further valve 56.
  • the valve 56 is in the middle position, which defines the passage to the spray nozzles for the degressive chip of both the left and the right cutting head releases and thus the line 55 connects to lines 20 and 22.
  • the Ventil'56 is shifted to the right or to the left, so that upon pivoting of the cutting arm to the left the line 55 with the line 20 to the left hand cutting head is connected, and when the cutting arm is pivoted to the right, the line 55 is only connected to the line 22 of the right cutting head.
  • the valve 56 is displaced in the manner already described in FIG. 8 by the pressure in the lines 62 and 67, respectively.
  • the valve 56 is displaced against the force of a spring from its central position, so that the valve 56 is released when the pressure is released Lines 62 and 67 return to the middle position.
  • the valve 47 is moved downward to the left when the cutting arm moves and engages again in the end position in which the pressure line 18 is connected to the line 52, which via the valve 57 connects to the lines 21 and / or 23 to the spray nozzles for working with progressive chip. If there is no lateral pivoting movement, the valve 57 is in its central position due to the springs acting on both sides of the valve, so that in turn the left and right cutting heads are sprayed simultaneously if the movement is only downward. If this movement causes the cutter arm to pivot to the left or right, line 67 or 62 will be pressurized and the valve 57 will be displaced from its central position. In contrast to the valves 56 and 57, the valve 47 engages in the respective position.
  • valve 57 When the cutter arm is pivoted to the left, the valve 57 is displaced to the right by the pressure in line 67 and line 52 is connected to line 21. When the cutter arm is pivoted to the right, the Ven til 57 shifted to the left and line 52 connected to line 23. When line 67 or 62 becomes depressurized, valve 57 again reaches its middle position, in which the water is supplied to both line 21 and line 23, by means of the force of the springs.
  • the valve 47 can also be brought into a desired position via the hand lever 71 regardless of the pressure in the lines 51 or 53, which corresponds to a swiveling up or a swiveling down of the cutting arm, with which the heads are sprayed in a targeted manner when the arm is stationary can be, as may be necessary for cleaning purposes, for example.
  • the hand lever 71 can also be used to stop spraying while the head is running, in which case the water is returned in a circle to the reservoir 68 via the line 70.
  • the water connection to the reservoir 68 is designated 72.

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  • 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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
EP79890040A 1978-10-10 1979-10-08 Dispositif pour refroidir les outils d'une tête de havage et du front de creusement et pour empêcher la formation de poussière Withdrawn EP0010536A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT7278/78 1978-10-10
AT727878A AT358509B (de) 1978-10-10 1978-10-10 Einrichtung zum kuehlen der meissel von schraem- koepfen und der ortsbrust

Publications (1)

Publication Number Publication Date
EP0010536A1 true EP0010536A1 (fr) 1980-04-30

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ID=3594446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79890040A Withdrawn EP0010536A1 (fr) 1978-10-10 1979-10-08 Dispositif pour refroidir les outils d'une tête de havage et du front de creusement et pour empêcher la formation de poussière

Country Status (12)

Country Link
US (1) US4285549A (fr)
EP (1) EP0010536A1 (fr)
AT (1) AT358509B (fr)
ES (1) ES485087A1 (fr)
HU (1) HU180547B (fr)
IN (1) IN151680B (fr)
MA (1) MA18590A1 (fr)
NZ (1) NZ191455A (fr)
PL (1) PL218800A1 (fr)
RO (1) RO85227B (fr)
YU (1) YU245079A (fr)
ZA (1) ZA794432B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512102A1 (fr) * 1981-08-27 1983-03-04 Gewerk Eisenhuette Westfalia Cylindre de coupe comprenant un dispositif de pulverisation
DE3229343A1 (de) * 1981-12-15 1983-07-21 Robert Bosch Gmbh, 7000 Stuttgart Sensor fuer relativbewegungen
DE3429170A1 (de) * 1984-08-08 1986-02-20 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Schraemarm fuer eine teilschnittmaschine mit zwei um eine im wesentlichen horizontale achse drehbaren schraemkoepfen
GB2173842A (en) * 1985-04-10 1986-10-22 Anderson Strathclyde Plc Mineral cutting picks
GB2183696A (en) * 1985-11-27 1987-06-10 Paurat F Reducing ignition risk when driving galleries in mine workings
DE3609754A1 (de) * 1986-03-22 1987-09-24 Gewerk Eisenhuette Westfalia Beduesungseinrichtung fuer teilschnittmaschinen
GB2205338A (en) * 1987-05-22 1988-12-07 Paurat F Reducing ignition risk with a gallery driving machine
WO1997011255A1 (fr) * 1995-09-22 1997-03-27 Tamrock Voest-Alpine Bergtechnik Gesellschaft Mbh Dispositif pour reduire le risque d'inflammabilite lors de l'utilisation de machines de creusement de galeries a decoupage partiel
WO1999047791A1 (fr) * 1998-03-17 1999-09-23 Tamrock Voest-Alpine Bergtechnik Gesellschaft Mbh Dispositif pour equiper des pics avec des buses, ainsi que procede pour equiper avec des buses les pics a queue cylindrique d'une haveuse
DE19951848C2 (de) * 1999-10-28 2003-07-24 Rag Ag Gewinnungsmaschine mit optimierter Bedüsungseinrichtung
DE10393218B4 (de) * 2002-09-24 2010-03-04 Voest-Alpine Bergtechnik Gesellschaft M.B.H. Vorrichtung zur Erzeugung eines Gas-Flüssigkeits-Gemisches im Bereich von Schrämwerkzeugen
WO2012126028A2 (fr) 2011-03-23 2012-09-27 Sandvik Mining And Construction G.M.B.H. Dispositif de refroidissement de trépans
CN105041312A (zh) * 2015-08-05 2015-11-11 广州日滨科技发展有限公司 采煤机监测装置

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Publication number Priority date Publication date Assignee Title
DE3414195A1 (de) * 1984-04-14 1985-10-24 Charbonnages De France, Paris Drehkoerper eines schneidkopfes einer teilschnittvortriebsmaschine
DE3441397C3 (de) * 1984-11-13 1994-04-14 Eickhoff Geb Steuereinrichtung für die Beaufschlagung der Düsen einer Schrämwalze mit Flüssigkeit
WO2000060213A2 (fr) * 1999-04-02 2000-10-12 Amvest Systems Inc. Systeme pour exploitation miniere de type tambour assiste par jet d'eau
CN103835711B (zh) * 2014-03-28 2016-04-13 辽宁瀚石机械制造有限公司 无人智能采矿机

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FR2013033A1 (fr) * 1968-07-16 1970-03-27 Atlas Copco Mct Ab
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DE2032846A1 (de) * 1970-07-02 1972-01-05 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Schrämwalze, die mit auf ihrer Mantelfläche angeordneten, vorzugsweise schraubenlinienförmig verlaufenden Mitnehmerleisten ausgerüstet ist
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DE1187569B (de) * 1958-06-10 1965-02-25 Bergwerksverband Gmbh Einrichtung zur Staubbekaempfung bei der schaelenden Kohlengewinnung
FR2013033A1 (fr) * 1968-07-16 1970-03-27 Atlas Copco Mct Ab
FR2240999A1 (en) * 1973-08-17 1975-03-14 Coal Industry Patents Ltd Coal mining machine - with telescopic arm carrying tracks for cutter chains
DE2653706A1 (de) * 1976-11-26 1978-06-01 Krummenauer Kg H Schraemwalze

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COLLIERY GUARDIAN, Juni 1974 London B. GODDARD "Dust Control in Coal Mines" Seiten 180, 181 * Seite 181, linke Spalte, 4. Absatz * *
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512102A1 (fr) * 1981-08-27 1983-03-04 Gewerk Eisenhuette Westfalia Cylindre de coupe comprenant un dispositif de pulverisation
DE3229343A1 (de) * 1981-12-15 1983-07-21 Robert Bosch Gmbh, 7000 Stuttgart Sensor fuer relativbewegungen
DE3429170A1 (de) * 1984-08-08 1986-02-20 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Schraemarm fuer eine teilschnittmaschine mit zwei um eine im wesentlichen horizontale achse drehbaren schraemkoepfen
GB2173842A (en) * 1985-04-10 1986-10-22 Anderson Strathclyde Plc Mineral cutting picks
GB2183696A (en) * 1985-11-27 1987-06-10 Paurat F Reducing ignition risk when driving galleries in mine workings
DE3541886A1 (de) * 1985-11-27 1987-06-19 Paurat F Verfahren zur verminderung der zuendgefahr beim vortrieb von strecken in bergbaulichen untertagebetrieben
DE3609754A1 (de) * 1986-03-22 1987-09-24 Gewerk Eisenhuette Westfalia Beduesungseinrichtung fuer teilschnittmaschinen
AT392514B (de) * 1986-03-22 1991-04-25 Gewerk Eisenhuette Westfalia Beduesungseinrichtung fuer teilschnittmaschinen
GB2205338B (en) * 1987-05-22 1991-03-06 Paurat F Reducing ignition risk with a gallery driving machine
GB2205338A (en) * 1987-05-22 1988-12-07 Paurat F Reducing ignition risk with a gallery driving machine
WO1997011255A1 (fr) * 1995-09-22 1997-03-27 Tamrock Voest-Alpine Bergtechnik Gesellschaft Mbh Dispositif pour reduire le risque d'inflammabilite lors de l'utilisation de machines de creusement de galeries a decoupage partiel
WO1999047791A1 (fr) * 1998-03-17 1999-09-23 Tamrock Voest-Alpine Bergtechnik Gesellschaft Mbh Dispositif pour equiper des pics avec des buses, ainsi que procede pour equiper avec des buses les pics a queue cylindrique d'une haveuse
DE19951848C2 (de) * 1999-10-28 2003-07-24 Rag Ag Gewinnungsmaschine mit optimierter Bedüsungseinrichtung
DE10393218B4 (de) * 2002-09-24 2010-03-04 Voest-Alpine Bergtechnik Gesellschaft M.B.H. Vorrichtung zur Erzeugung eines Gas-Flüssigkeits-Gemisches im Bereich von Schrämwerkzeugen
WO2012126028A2 (fr) 2011-03-23 2012-09-27 Sandvik Mining And Construction G.M.B.H. Dispositif de refroidissement de trépans
CN105041312A (zh) * 2015-08-05 2015-11-11 广州日滨科技发展有限公司 采煤机监测装置

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RO85227A (fr) 1984-09-29
IN151680B (fr) 1983-07-02
NZ191455A (en) 1983-05-10
US4285549A (en) 1981-08-25
ES485087A1 (es) 1980-05-16
PL218800A1 (fr) 1980-06-02
AT358509B (de) 1980-09-10
RO85227B (ro) 1984-10-30
ZA794432B (en) 1980-08-27
ATA727878A (de) 1980-02-15
YU245079A (en) 1983-01-21
HU180547B (en) 1983-03-28
MA18590A1 (fr) 1980-04-01

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