EP0010534B1 - Dispositif de refroidissement des burins des outils de coupe pour des machines d'abattage et du front de taille et d'empêchement de la formation de poussière - Google Patents

Dispositif de refroidissement des burins des outils de coupe pour des machines d'abattage et du front de taille et d'empêchement de la formation de poussière Download PDF

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Publication number
EP0010534B1
EP0010534B1 EP79890023A EP79890023A EP0010534B1 EP 0010534 B1 EP0010534 B1 EP 0010534B1 EP 79890023 A EP79890023 A EP 79890023A EP 79890023 A EP79890023 A EP 79890023A EP 0010534 B1 EP0010534 B1 EP 0010534B1
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EP
European Patent Office
Prior art keywords
valve
arrangement according
cutting
nozzle
tooth
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
Application number
EP79890023A
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German (de)
English (en)
Other versions
EP0010534A1 (fr
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
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Filing date
Publication date
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Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0010534A1 publication Critical patent/EP0010534A1/fr
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Expired 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

  • GB-A-1 110 763 has disclosed a further device of the type mentioned at the outset, in which nozzles are arranged next to the chisels, the supply of liquid for depositing the dust being controlled as a function of the rotation of the cutting tool.
  • the chisels are cooled by water atomized by means of compressed air
  • the water supply to the nozzles is controlled by slip rings which are arranged on the axis of the cutting head.
  • slip rings which have become known, for example, from DE-B-1 935 886, are not suitable for enabling a seal against high pressures.
  • air since air is used as a pressure medium in this known embodiment, the water can be supplied to the air under relatively low pressure and such a low pressure can be controlled by slip rings.
  • the air flow is not interrupted during the time in which no cooling is required for the chisel, but only the water supply to the air flow is interrupted by the grinding ring control.
  • the chisels In order to certainly avoid the risk of ignition due to sparking, not only must the chisels be cooled, but also the groove that is cut by the chisels, i.e.
  • the engagement of the chisels does not always take place over a range of 90 ° of the cutting head rotation. Depending on the type of rock, this area can also be selected smaller or larger. It is therefore not possible, even with a control system with slip rings, to adjust the water supply exactly as it would be necessary for the respective operating case in order to avoid water losses and to eliminate the risk that the chisels come into engagement with the rock over an uncooled angular range. It can thus, sparking cannot be prevented with certainty in this way.
  • the invention now relates to a device for cooling the chisels of the cutting tool of a cutting machine and the face as well as for depositing dust, in particular the cutting tool formed by at least one rotating cutting head on the movable cutting arm of a cutting machine, the chisels only intermittently engaging with the standing stone and the working face by means of nozzles for the cooling medium which are arranged on the cutting tool and are assigned individual chisels, a control being provided which only permits the supply of the cooling medium to the nozzles during the time of engagement of the chisels to which the relevant nozzles are assigned. releases into the rock.
  • the invention aims, with certainty, to avoid ignition of the combustible gases released during the cutting and to precipitate the resulting dust, without having to accept excessive water losses, and essentially consists in the fact that, as a cooling medium, water without the addition of Air is used and that the chisel shaft of the chisel is axially displaceably mounted in the chisel holder and is resiliently supported against the cutting pressure, the control of the supply of the cooling medium being carried out by means of a valve acted upon by the shifting movement of the chisel, which is accommodated in the chisel holder.
  • the supply pressure of the coolant upstream of the nozzle can be at least 20 bar, preferably above 25 bar. This high pressure ensures that the nozzles are kept clear and that the water supply is precisely controlled and limited to the time the chisel engages in the rock and allows such a high pressure to be applied without having to accept excessive water consumption.
  • the advantage is achieved that the path from the valve to the nozzle is very short, so that immediately when a load occurs, the chisel starts cooling and the water flow is switched off immediately after this load has ended.
  • the valve arrangement is also exchanged when the bit holder is replaced, and that the processing can be carried out in large series for the purpose of forming the valve arrangement, since every cutter head has a large number of chisel holders.
  • the design is preferably such that the valve controlling the supply of the cooling medium to the nozzle is arranged on the side of the chisel shaft facing the axis of the cutting head and the nozzle is arranged on the side of the chisel shaft facing away from the axis of the cutting head.
  • the valve arrangement is moved into that area of the bit holder in which there is sufficient space for it, and the nozzles are brought into the immediate area of the bit.
  • the nozzle is preferably directed against the groove dug by the chisel.
  • the chisel is only cooled indirectly and the risk is eliminated that the chisel cutting edge becomes brittle as a result of excessive cooling.
  • the fact that the nozzle is directed against the groove dug by the chisel means that when the chisel enters the rock, i. in other words, in the situation in which the greatest risk of spark formation exists, this spark formation is rendered harmless by a water curtain.
  • the risk of sparking is lower because hard inclusions are simply broken out.
  • the groove is flooded with water to such an extent that this also eliminates the risk of sparking.
  • the arrangement can be such that the valve body, which is preferably formed by a ball, is held in the closed position only by the supply pressure of the cooling medium. This is easily made possible by the high supply pressure of the water and offers the advantage that fragile parts such as springs can be avoided. If necessary, a spring can also be provided.
  • the chisel shaft is equipped with a radially projecting rim which interacts with a tappet which actuates the valve body in the opening direction.
  • a tappet which actuates the valve body in the opening direction.
  • Actuator for the valve body formed by a sealingly guided piston which has a stilt acting on the valve body. A sealing is achieved by means of this piston, so that the water passing through the valve can be guided over the valve-side working space of the piston.
  • the valve cone of the valve is equipped with an outwardly projecting part, for example an annular rim, which engages behind the end of the bit shaft facing away from the bit tip.
  • the arrangement of the valve actuation at the end of the chisel shaft facing away from the chisel tip has the advantage that the parts serving for valve actuation lie outside the area which is used for cutting and are therefore protected. Hiebei can be arranged according to the invention, the valve and the nozzle on the side of the chisel facing away from the axis of the cutting head, since the actuators of the valve are anyway protected by the projecting parts of the chisel holder.
  • valve and nozzle are now on the same side of the chisel, a preferred embodiment can now be selected according to the invention, in which the space in front of the nozzle directly adjoins the space behind the valve seat.
  • This has the advantage that a pressure drop between the valve and nozzle can be avoided, and in particular such a design offers the possibility of choosing a very high supply pressure of the water upstream of the nozzle, which according to the invention can be approximately 200 bar or even higher.
  • a high supply pressure has the advantage that clogging of the nozzle is avoided with certainty, and has the further advantage that the water jet escaping under such a high pressure also causes part removal of the material to be cut, so that the chiseling work of the chisel by the water jet is supported.
  • the nozzle is expediently directed against the groove dug by the chisel.
  • valve cone in which a part connected to the valve cone engages behind the rear end of the chisel shaft, the valve cone is pressed against the valve seat by a spring which is biased against the working load acting on the chisel.
  • This spring also causes the chisel or the chisel shaft to be reset as soon as the chisel is relieved of the working pressure.
  • FIG. 1 shows a section through the chisel holder.
  • 2 and 3 show another embodiment, wherein FIG. 2 shows a section through the bit holder in the axis of the bit along line II-II of FIG. 3 and FIG. 3 shows a section along line III-III of FIG. 2.
  • Fig. 4 shows the overall arrangement of the cutting machine with the cutting arm and the rotating cutting heads in front of the working face.
  • Fig.1 1 1 represents the base body of the cutting head, on which the bit holder 2 are welded.
  • a bushing 3 is pressed into the chisel holder 2, within which the chisel shaft 4 is mounted so as to be displaceable in the direction of its axis 5.
  • the chisel is supported against the cutting pressure by a spring 6.
  • the position of the chisel shank 4 is shown in the state loaded by the cutting pressure.
  • the chisel shaft 4 has already been pushed back by the amount of the play 7 in the direction of the spring 6, in which position a rim 10 of the chisel shaft 4 bears against a flange 54 of the bush 3.
  • a bushing 8 is inserted into the chisel holder 2, within which a piston 9 is sealingly guided.
  • the piston 9, which rests on the rim 10 of the chisel is pressed in the direction of the arrow 11 and, by means of a stilt 12, presses a ball valve into the open position, in which the ball 13 is lifted from the valve seat 14: 15 is a hole for the cooling medium formed by the water.
  • the cooling medium passes into a space 16 and from here via the valve seat 14 into space 17 to the other side of the ball and from here through a bore 18 in the bush 8 and a bore 19 in the body of the bit holder 2 into one of a groove of the bush 3 formed annular space 20 and from here via a bore 21 to the nozzle 22.
  • the chisel shaft 4 is loaded by the cutting pressure, the water is sprayed out of the nozzle and reaches the groove 23 dug by the chisel in the face face 24 of where it is diverted to the chisel.
  • the ball 13 is held in its sealing position on the valve seat only by the supply pressure of the water. It must therefore be held by a rib 25, the ball in the open position near the valve seat 14. However, a spring loading the ball 13 in the closing direction can also be provided. 26 is a cover plate which covers the piston 9 and limits the path of this piston.
  • the water jet 27 emerging from the nozzle creates a water curtain, as it were, which extinguishes sparks which may form when the chisel engages in the rock.
  • the chisel is only indirectly cooled by the redirected water, at the same time the resulting dust is deposited.
  • the water is fed to the nozzle 22 at a very high pressure, which is above 25 bar, so that blockage of the nozzle is avoided with certainty.
  • the exit speed from the nozzle is approximately 90 m / s.
  • both the valve 31 and the nozzle 32 are arranged on the side of the chisel shaft 33 facing away from the axis of the cutting head.
  • the chisel shaft is again slidably mounted in the chisel-like 34, with a displacement a of about 2 mm is provided.
  • a bush 35 inserted into the chisel holder 34 surrounds the valve plug 36 and forms the valve seat 37.
  • the valve plug 36 is pressed against the valve seat 37 by a spring 38 into the closed position.
  • the stem 39 of the valve cone 36 is sealingly guided in a ring 40 provided with a seal.
  • annular rim 42 is provided which engages behind the rear end 43 of the chisel shaft 33. In this way, the chisel is moved into the unloaded position by the action of the spring 38 when the working pressure on the chisel is eliminated.
  • the water comes from the cutting head 44 through a bore 45 to a channel 46 in the bit holder and from this channel through openings 47 of the sleeve 35 into the space in front of the valve cone 36.
  • the space 49 immediately adjoins the space 48 in the flow direction behind the valve cone 36 the nozzle 32 so that a pressure drop between the valve 31 and the nozzle 32 is avoided.
  • a very high water pressure of, for example, more than 200 bar can therefore be built up in the space 49 in front of the nozzle 32 and there is a sharp, narrow jet, as indicated by 50.
  • a sieve body 51 can be inserted into the space 49 in front of the nozzle 32.
  • Fig. 4 shows the position of the cutting head, which is equipped with chisel holders and nozzles according to FIG. 1, on the face 24.
  • the cutting head 28 rotates in the direction of arrow 29.
  • the water jet emerging from the nozzle impacts the groove dug by the chisel on the steep part 30 by the water jet 27.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Details Of Cutting Devices (AREA)
  • Nozzles (AREA)
  • Earth Drilling (AREA)

Claims (12)

1. Dispositif de refroidissement des burins de l'outil de coupe d'une machine d'abattage et du front de taille, et d'empêchement de la formation de la poussière, en particulier à un dispositif de refroidissement des burins de l'outil de havage formé par au moins une tête de havage tournante (28) et monté sur le bras de havage mobile d'une haveuse dans laquelle les burins ne sont en contact que momentanément avec la roche à haver et du front de taille au moyen de buses (22, 32) pour le milieu de refroidissement disposées sur l'outil de havage et associées aux différents burins, dispositif dans lequel est prévue une commande qui libère l'acheminement du milieu de refroidissement aux buses uniquement pendant le temps où les burins qui sont associés aux buses considérées attaquent le rocher, caractérisé en ce qu'on utilise comme milieu de refroidissement, d'une façon connue, de l'eau sans addition d'air, et en ce que la tige (4, 22) du burin est montée dans le porte-burin (2, 34) avec possibilité de translation axiale et est appuyée élastiquement en sens inverse de la pression de coupe, la commande de l'acheminement du milieu de refroidissement s'effectuant au moyen d'un clapet (13, 31) sollicité par le mouvement de translation du burin et logé dans le porte-burin (2, 34).
2. Dispositif suivant la revendication 1, caractérisé en ce que la tige (4) du burin est munie d'un rebord (10) en saillie radiale qui coopère avec un poussoir actionnant le corps de clapet dans le sens de l'ouverture.
3. Dispositif suivant la revendication 2, caractérisé en ce que l'organe d'actionnement du corps de clapet est formé par un piston (9) guidé à joint étanche qui présente un téton (12) agissant sur le corps de clapet.
4. Dispositif suivant l'une des revendications 1 à 3, caractérisé en ce que le corps de clapet, qui est de préférence formé par une bille (13), est maintenu dans la position de fermeture uniquement par la pression d'acheminement du milieu de refroidissement.
5. Dispositif suivant l'une des revendications 1 à 4, caractérisé en ce que le clapet (13) qui commande l'acheminement du milieu de refroi- dissement à la buse (22) est disposé sur le côté de la tige (4) du burin qui est dirigé vers l'axe de la tête de havage, et en ce que la buse (22) est disposée sur le côté de la tige (4) du burin qui est à l'opposé de l'axe de la tête de havage.
6. Dispositif suivant l'une des revendications 1 à 5, caractérisé en ce que la pression d'acheminement de l'eau en amont de la buse (22) est d'au moins 20 bars, de préférence de plus de 25 bars.
7. Dispositif suivant la revendication 1, caractérisé en ce que le cône de clapet (36) du clapet (31) est muni d'une partie en saillie vers l'extérieur, par exemple d'un rebord annulaire (42), qui est engagée derrière l'extrémité de la tige (33) du burin qui est à l'opposé de la pointe du burin.
8. Dispositif suivant l'une des revendications 1 à 7, caractérisé en ce que le clapet (31) et la buse (22) sont disposés sur le côté de la tige (33) du burin qui est à l'opposé de l'axe de la tête de havage.
9. Dispositif suivant l'une des revendications 1, 7 et 8, caractérisé en ce que le cône de clapet (36) est pressé sur le siège de clapet (37) par un ressort (38) bandé avec précontrainte en antagonisme par rapport à la charge de travail agissant sur le burin.
10. Dispositif suivant l'une des revendications 1 et 7 à 9, caractérisé en ce que l'espace (49) situé en amont de la buse (32) se raccorde directement à l'espace (48) situé en aval du siège de clapet (37).
11. Dispositif suivant l'une des revendications 1 et 7 à 10, caractérisé en ce que la pression d'acheminement de l'eau en amont de la buse (32) est d'environ 200 bars ou plus.
12. Dispositif suivant l'une des revendications 1 à 11, caractérisé en ce que les buses (22, 32) sont dirigées vers le sillon creusé par le burin.
EP79890023A 1978-10-19 1979-07-30 Dispositif de refroidissement des burins des outils de coupe pour des machines d'abattage et du front de taille et d'empêchement de la formation de poussière Expired EP0010534B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT752278A AT358510B (de) 1978-10-19 1978-10-19 Einrichtung zum kuehlen der meissel des schraemwerkzeuges einer schraemmaschine und der ortsbrust
AT7522/78 1978-10-19

Publications (2)

Publication Number Publication Date
EP0010534A1 EP0010534A1 (fr) 1980-04-30
EP0010534B1 true EP0010534B1 (fr) 1982-07-21

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EP79890023A Expired EP0010534B1 (fr) 1978-10-19 1979-07-30 Dispositif de refroidissement des burins des outils de coupe pour des machines d'abattage et du front de taille et d'empêchement de la formation de poussière

Country Status (18)

Country Link
EP (1) EP0010534B1 (fr)
JP (1) JPS582319B2 (fr)
AT (1) AT358510B (fr)
AU (1) AU518950B2 (fr)
CA (1) CA1126766A (fr)
CS (1) CS256360B2 (fr)
DE (1) DE2963366D1 (fr)
ES (1) ES485476A1 (fr)
HU (1) HU180112B (fr)
IN (1) IN151400B (fr)
MA (1) MA18567A1 (fr)
MX (1) MX150297A (fr)
NZ (1) NZ191359A (fr)
PL (1) PL120113B1 (fr)
RO (1) RO87652A (fr)
SU (1) SU1266476A3 (fr)
YU (1) YU41877B (fr)
ZA (1) ZA793915B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234993A1 (de) * 1982-09-22 1984-03-22 Bergwerksverband Gmbh, 4300 Essen Automatische teilbeduesung an schneidend arbeitenden gewinnungsmaschinen
DE3441949C1 (de) * 1984-11-16 1986-04-24 Friedrich Wilhelm Paurat Vorrichtung für die Halterung der Schneidmeißel sowie für die Steuerung der Bedüsungsmittelzufuhr bei einem Schneidkopf für eine Streckenvortriebsmaschine
DE3441950C1 (de) * 1984-11-16 1986-04-24 Paurat GmbH, 4223 Voerde Vorrichtung für die Halterung der Schneidmeißel sowie für die Steuerung der Bedüsungsmittelzufuhr bei einem Schneidkopf für eine Streckenvortriebsmaschine
DE3630636C1 (de) * 1986-09-09 1987-10-01 Beyer Rudi Dipl Ing Anordnung zur Steuerung der Fluessigkeitszufuhr zur einzelnen Spruehduese an einer Schraemwalze

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DE2854307A1 (de) * 1978-12-15 1980-07-03 Kennametal Inc Halter zur anbringung von meisseln, insbesondere von rundschaftmeisseln an bergbaulichen gewinnungs- und streckenvortriebsmaschinen
DE8013540U1 (de) * 1980-05-20 1980-10-30 Bergwerksverband Gmbh, 4300 Essen Wasserduese mit selbstreinigungsvorrichtung
DE3021821C2 (de) * 1980-06-11 1983-01-13 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Schrämmeißel für bergbauliche Gewinnungs- und Streckenvortriebsmaschinen
AT369859B (de) * 1981-03-12 1983-02-10 Voest Alpine Ag Einrichtung zum kuehlen der meissel einer schraemmaschine
AT370208B (de) * 1981-06-04 1983-03-10 Voest Alpine Ag Einrichtung zum kuehlen der meissel einer schraemmaschine
AT370209B (de) * 1981-06-04 1983-03-10 Voest Alpine Ag Einrichtung zum kuehlen der meissel einer schraemmaschine
DE3122323A1 (de) * 1981-06-05 1982-12-23 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Steuerung des druckwassers innenbeduester schneidwalzen
SE452638B (sv) * 1982-03-10 1987-12-07 Sandvik Ab Anordning for vetsketillforsel vid roterande verktyg for brytning av fast material
AT375149B (de) * 1982-07-06 1984-07-10 Voest Alpine Ag Mit einer spruehvorrichtung ausgestatteter meisselhalter
DE3242137C2 (de) * 1982-11-13 1985-06-05 Ruhrkohle Ag, 4300 Essen Gedämpft geführter Rundschaftmeißel
DE3302103C1 (de) * 1983-01-22 1984-06-20 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Schraemwalze
GB8306641D0 (en) * 1983-03-10 1983-04-13 Wimet Mining Ltd Pick holding arrangements
US4555143A (en) * 1983-04-11 1985-11-26 Voest-Alpine Aktiengesellschaft Apparatus for cutting rock
US4569558A (en) * 1983-07-25 1986-02-11 The Regents Of The University Of California Drag bit construction
US4786111A (en) * 1983-09-26 1988-11-22 Zekeriya Yargici Apparatus and method for delivering liquid coolant to drum mounted cutting tools
DE3341321C2 (de) * 1983-11-15 1986-04-24 Ruhrkohle Ag, 4300 Essen Anordnung der Schneidmeißelhalterung am Schneidkörper
AT381366B (de) * 1984-11-02 1986-10-10 Ver Edelstahlwerke Ag Vorrichtung zum abbau von gestein und rundschaftmeissel fuer diese vorrichtung
DE3443289C1 (de) * 1984-11-28 1993-02-11 Friedrich Wilhelm Paurat Verfahren zur Verminderung der Zuendung von Grubengas beim Arbeiten einer Teilschnitt-Streckenvortiebsmaschine
SE457818B (sv) * 1985-05-03 1989-01-30 Sandvik Ab Anordning foer fluidumtillfoersel vid verktyg foer brytning av fast material
SE452495B (sv) * 1985-06-13 1987-11-30 Sandvik Ab Anordning for vetsketillforsel till ett verktyg for brytning av fasta material
US4678238A (en) * 1986-03-17 1987-07-07 Fansteel Inc. Coolant sleeve for mining tools
JPH0633709B2 (ja) * 1987-09-29 1994-05-02 清水建設株式会社 地中掘削機
SE463725B (sv) * 1988-07-19 1991-01-14 Sandvik Ab Ventil
DE4002742C2 (de) * 1990-02-05 1994-03-24 Minnovation Ltd Wasserbedüsung für Schräm- oder Schneidkörper im Bergbau
US6247759B1 (en) 1999-06-08 2001-06-19 Kennametal Pc Inc. Cutting tool assembly with replaceable spray nozzle
GB0017470D0 (en) * 2000-07-18 2000-08-30 Hydra Tools Int Plc Pick box for housing a mineral cutter pick
US8740314B2 (en) * 2011-01-11 2014-06-03 Joy Mm Delaware, Inc. Bit holding system with an opening for removal of broken bits
CN104564063A (zh) * 2013-10-12 2015-04-29 李仕清 一种复合旋切的采掘机
RU2541970C1 (ru) * 2014-01-30 2015-02-20 Федеральное государственное бюджетное учреждение науки ИНСТИТУТ ПРОБЛЕМ КОМПЛЕКСНОГО ОСВОЕНИЯ НЕДР РОССИЙСКОЙ АКАДЕМИИ НАУК (ИПКОН РАН) Способ предотвращения взрывоопасных скоплений газов и пыли в зоне разрушения угля
CN110043276B (zh) * 2019-05-22 2024-04-23 中国铁建重工集团股份有限公司 隧道掘进机、刀盘及滚刀刀座保护结构
USD1012617S1 (en) 2021-02-22 2024-01-30 Ball Corporation Tapered cup
CN114183089B (zh) * 2021-12-14 2024-03-12 河南能源化工集团研究总院有限公司 一种新型煤矿井下打钻防喷装置
CN114382491B (zh) * 2022-01-26 2022-07-22 中国有色金属工业昆明勘察设计研究院有限公司 避免隧道涌水突泥的钻孔系统及施工方法

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SU621873A1 (ru) * 1977-04-12 1978-08-30 Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Проходческих Машин И Комплексов Для Угольной,Горной Промышленности И Подземного Строительства" Исполнительный орган проходческого комбайна

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DE1283777B (de) * 1967-11-22 1968-11-28 Austin Hoy And Company Ltd Sta Auswechselbare Schraemmeissel mit Meisselhalter und mit Zufuehrungen fuer Fluessigkeit
GB1244789A (en) * 1969-11-06 1971-09-02 Coal Industry Patents Ltd Dust-suppression means for a mineral mining machine
DE7801940U1 (de) * 1978-01-23 1978-05-03 Demag Ag, 4100 Duisburg Schraemmeissel zum loesen von gestein

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SU619642A1 (ru) * 1976-05-24 1978-08-15 Ордена Трудового Красного Знамени Институт Горного Дела Им. А.А.Скочинского Исполнительный орган
SU621873A1 (ru) * 1977-04-12 1978-08-30 Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Проходческих Машин И Комплексов Для Угольной,Горной Промышленности И Подземного Строительства" Исполнительный орган проходческого комбайна

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DE3234993A1 (de) * 1982-09-22 1984-03-22 Bergwerksverband Gmbh, 4300 Essen Automatische teilbeduesung an schneidend arbeitenden gewinnungsmaschinen
DE3441949C1 (de) * 1984-11-16 1986-04-24 Friedrich Wilhelm Paurat Vorrichtung für die Halterung der Schneidmeißel sowie für die Steuerung der Bedüsungsmittelzufuhr bei einem Schneidkopf für eine Streckenvortriebsmaschine
DE3441950C1 (de) * 1984-11-16 1986-04-24 Paurat GmbH, 4223 Voerde Vorrichtung für die Halterung der Schneidmeißel sowie für die Steuerung der Bedüsungsmittelzufuhr bei einem Schneidkopf für eine Streckenvortriebsmaschine
DE3630636C1 (de) * 1986-09-09 1987-10-01 Beyer Rudi Dipl Ing Anordnung zur Steuerung der Fluessigkeitszufuhr zur einzelnen Spruehduese an einer Schraemwalze

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CA1126766A (fr) 1982-06-29
YU41877B (en) 1988-02-29
PL120113B1 (en) 1982-02-27
RO87652B (ro) 1985-10-02
IN151400B (fr) 1983-04-09
ATA752278A (de) 1980-02-15
YU195179A (en) 1983-01-21
ZA793915B (en) 1980-07-30
CS256360B2 (en) 1988-04-15
EP0010534A1 (fr) 1980-04-30
AU518950B2 (en) 1981-10-29
PL219035A1 (fr) 1980-06-16
SU1266476A3 (ru) 1986-10-23
MA18567A1 (fr) 1980-07-01
MX150297A (es) 1984-04-11
JPS5555797A (en) 1980-04-23
ES485476A1 (es) 1980-05-16
NZ191359A (en) 1983-05-31
JPS582319B2 (ja) 1983-01-14
HU180112B (en) 1983-02-28
AT358510B (de) 1980-09-10
AU5018179A (en) 1980-04-24
RO87652A (fr) 1985-10-31
DE2963366D1 (en) 1982-09-09

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