EP0185571B1 - Sector spraying device in coal mining - Google Patents

Sector spraying device in coal mining Download PDF

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Publication number
EP0185571B1
EP0185571B1 EP85402237A EP85402237A EP0185571B1 EP 0185571 B1 EP0185571 B1 EP 0185571B1 EP 85402237 A EP85402237 A EP 85402237A EP 85402237 A EP85402237 A EP 85402237A EP 0185571 B1 EP0185571 B1 EP 0185571B1
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EP
European Patent Office
Prior art keywords
drum
disc
cylindrical
picks
sectorial
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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
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EP85402237A
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German (de)
French (fr)
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EP0185571A1 (en
Inventor
Jean-Joseph Demoulin
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Charbonnages de France CDF
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Charbonnages de France CDF
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Priority to AT85402237T priority Critical patent/ATE37070T1/en
Publication of EP0185571A1 publication Critical patent/EP0185571A1/en
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    • 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 subject of the invention is a sectoral sprinkler device which can be used for coal mining in order to reduce the production of dust and cool the tools in order to minimize the risk of explosion in gassy atmospheres.
  • Coal mining is carried out in particular using integral cutters, which are provided with one or more movable arms carrying a drum armed with picks and whose axis is perpendicular to the face.
  • the picks are placed on the one hand on the cylindrical surface of the drum, on the other hand on its flat face located on the side of the cutting face, which is often called rusting disc.
  • the peaks of the rusting disc permanently attack the massif, while only part of the peaks of the cylindrical surface is, at a given moment, in contact with the coal. Relative to the shearer, the position of these peaks corresponds to a cylindrical sector of the drum.
  • the lifting arm is likely to occupy either a high position (felling on the roof), or a low position (felling on the wall). For each of these positions corresponds, for the peaks in contact with the coal at a given instant, a cylindrical sector of the drum, these two sectors generally overlapping moreover in part.
  • the cutters often have two cutting arms, one of which, placed at the front of the machine, is in the high position, while the other, placed at the rear, is in the low position.
  • the position of the arms is reversed before changing its direction of movement.
  • the document GB-A-2,089,869 describes a cutting drum with peaks at its periphery with a water inlet in a central chamber from which leave radial channels which communicate respectively with peripheral water supply sectors cutting peaks; but this is only a single means of supplying water to all of the drum peaks.
  • a valve controlled by the rotation of the drum, sends the water to one or more radial channels, thus limiting watering to the connected sectors, which correspond to the normal case of the working position of the drum. No possibility is provided for changing the position of the valve according to the direction of cutting or the position, high or low, of the drum.
  • the main object of the invention is, therefore, to achieve a device for distributing sprinkling water mounted in the central part of a slaughter drum and comprising three supply circuits which provide permanent supply rust disk peaks and selective feeding of the peaks of two lateral cylindrical sectors as a function of the direction of horizontal movement of the drum.
  • a cutting drum having an end face provided with peaks, called a rusting disc, a cylindrical surface provided with peaks in which there are two opposite cylindrical sectors having two diametrically opposite parts and capable of having a common part, this drum also having an area central by which it is mounted on a fixed shaft which has at least one free end face, according to the invention, there are provided in the shaft and in the central zone of the drum three concentric pipes to the shaft and to the drum in which there is a first cylindrical inner pipe, a second annular intermediate pipe and a third annular outside pipe which are each connected by one of their ends to a water inlet comprising a stop valve; these pipes each individually lead either to channels leading to the peaks of the rusting disc, or to suitable annular sectoral chambers formed on the shaft, to which correspond channels which are distributed circumferentially on the drum and which are each joined together. for example, by a hose to a corresponding peak.
  • the first cylindrical inner pipe leads to the peaks of the rusting disc.
  • the second intermediate pipe is longer by its end end portion than the third external pipe and several radial channels join these pipes to the corresponding annular sectoral chambers which are located in transverse planes spaced in the axial direction.
  • the sectoral sprinkler device of the invention provides this result. In addition, it ensures the permanent supply of water to the peaks of the rusting disc which attack the carbon in the two positions of the drum 1.
  • a cutting drum 1 being well known to those skilled in the art and, as it is not generally concerned with the invention, it will not be described in detail.
  • This drum 1 has a central part 2 which is rotatably mounted on a shaft 3 which is stationary in rotation (FIG. 5).
  • This tree 3 is hollow; it is hollowed out of longitudinal holes with stepped diameters which contain three tubes 4, 5, 6 concentric with each other and concentric with the axis of the shaft 3, thus making appear a first cylindrical inner pipe 7, a second annular intermediate pipe 8 and a third annular external pipe 9, also concentric.
  • the first cylindrical inner pipe 7 is extended by a channel 7A to a central connection piece 10 from which flexible hoses 10A leave which lead to the peaks of the rusty disc.
  • the second intermediate pipe 8 and the third external pipe 9 terminate in end portions located in transverse planes IV-IV and III-III respectively, spaced apart in axial direction from the shaft 3, in which radial channels 11 are formed, 12 respectively.
  • the radial channels 12 end, in the thickness of the shaft 3, in an annular sectoral chamber 13, contained in this plane hollowed out on the surface of the shaft 3, and developing over 180 °.
  • radial channels 14 are provided in the central part 2 of the drum 1; their number corresponds to that of the peaks of the lateral face of the drum 1 and they are regularly spaced in the circumferential direction. They are each extended in the drum 1 by longitudinal channels 15 and then by terminal radial channels 16 (FIG. 5) which lead to connection end pieces 17 from which flexible hoses 18. These last each extend respectively to peaks of the lateral surface of the drum.
  • the two annular sectoral chambers 13 and 19 are arranged, in circumferential direction, in correspondence with the active sectors G and D of the drum 1 (FIG. 1) and they overlap in accordance with the common part C.
  • the peaks which are joined to the radial channels 14 and 20 are supplied with water only when these channels pass, in rotation, opposite the sectoral chambers 13 and 19.
  • the latter are supplied with water by the third annular external pipe 9 or by the second annular intermediate pipe 8 according to the high or low position of the drum 1.
  • Non-return valves 22, 23 are provided on the longitudinal channels 15, 21 (FIG. 5) to prevent the water sent by one circuit from flowing back from the other circuit.
  • the concentric pipes 7, 8, 9 are supplied with water, continuously for the pipe 7, alternately for the pipes 8, 9 at the end of the shaft 3 remote from the rusting disc of the drum, preferably from the as will now be described with reference to FIGS. 6 and 7.
  • each pipe opens into a volume supply 24, 25, 26 respectively located in its extension.
  • These volumes 24, 25, 26 and the end parts of the tubes 4, 5, 6 are located in a fixed part 27 ending in a disc 28 arranged in a plane transverse to the axis of the cutting drum.
  • This disc 28 has the thickness just sufficient to allow the radial feed channels 29, 30, 31, 32 to be dug therein. The latter are therefore spaced apart in circumferential direction; at their outer ends, they are connected to water inlet tubes 33, 34, 35, 36 respectively.
  • the radial supply channel 30 is connected by internal passages (a longitudinal passage 37 then a radial passage 38 dug in the fixed part 27) to the supply volume 25 of the second intermediate annular pipe 8.
  • the two supply channels 31, 32 both terminate in the supply volume 24 of the third external annular pipe 9 via passages longitudinal and radial internal internals 40.
  • the extent in the circumferential direction of the sectoral chambers 13, 19 is chosen in correspondence with that of the active cylindrical sectors G, D of the lifting drum.
  • the extent of the active sector G in the high position of the drum is generally 180 °, although it may be desired to water over a greater extent capable of reaching 210 ° / approximately.
  • the angular extent of the active sector D in the lower position of the drum is variable according to the height of the cutting face; in practice it can be between 60 ° and 180 °.

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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)
  • Nozzles (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Shearing Machines (AREA)
  • Confectionery (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Intermediate Stations On Conveyors (AREA)

Abstract

A sectorial sprinkling device for coal mining includes, in the central portion of a cutting drum of a cutting machine, a plurality of concentric piping systems which are connected to water delivery means. An interior piping system is permanently connected to the picks of the shearing disc of the drum, but the other two piping systems open via radial ducts into sectorial chambers whose angular extent corresponds to that of the active sectors of the lateral face of the cutting drum, depending on whether the cutting drum is in the high or low cutting position.

Description

L'invention a pour objet un dispositif d'arrosage sectoriel utilisable pour l'abattage du charbon en vue de réduire la production de poussières et de refroidir les outils afin de minimiser le risque d'explosion dans les atmosphères grisouteuses.The subject of the invention is a sectoral sprinkler device which can be used for coal mining in order to reduce the production of dust and cool the tools in order to minimize the risk of explosion in gassy atmospheres.

L'abattage du charbon se fait notamment à l'aide de haveuses intégrales, qui sont pourvues d'un ou plusieurs bras mobiles portant un tambour armé de pics et dont l'axe est perpendiculaire au front de taille. Les pics sont placés d'une part sur la surface cylindrique du tambour, d'autre part sur sa face plane située du côté du front de taille, qui est souvent appelée disque rouilleur. Pendant le havage, les pics du disque rouilleur attaquent en permanence le massif, tandis qu'une partie seulement des pics de la surface cylindrique est, à un instant donné, en contact avec le charbon. Par rapport à la haveuse, la position de ces pics correspond à un secteur cylindrique du tambour. En général, le bras de havage est susceptible -d'occuper soit une position haute (abattage au toit), soit une position basse (abattage au mur). A chacune de ces positions correspond, pour les pics en contact avec le charbon à un instant donné, un secteur cylindrique du tambour, ces deux secteurs se recouvrant d'ailleurs généralement en partie.Coal mining is carried out in particular using integral cutters, which are provided with one or more movable arms carrying a drum armed with picks and whose axis is perpendicular to the face. The picks are placed on the one hand on the cylindrical surface of the drum, on the other hand on its flat face located on the side of the cutting face, which is often called rusting disc. During the cutting, the peaks of the rusting disc permanently attack the massif, while only part of the peaks of the cylindrical surface is, at a given moment, in contact with the coal. Relative to the shearer, the position of these peaks corresponds to a cylindrical sector of the drum. In general, the lifting arm is likely to occupy either a high position (felling on the roof), or a low position (felling on the wall). For each of these positions corresponds, for the peaks in contact with the coal at a given instant, a cylindrical sector of the drum, these two sectors generally overlapping moreover in part.

Les haveuses comportent souvent deux bras de havage dont l'un, placé à l'avant de la machine, est en position haute, tandis que l'autre, placé à l'arrière, est en position basse. Lorsque la haveuse arrive en bout de taille, la position des bras est inversée avant que l'on change son sens de déplacement.The cutters often have two cutting arms, one of which, placed at the front of the machine, is in the high position, while the other, placed at the rear, is in the low position. When the cutter reaches the end of its size, the position of the arms is reversed before changing its direction of movement.

Il est connu de projeter de-l'eau sur le massif à abattre au voisinage de chaque pic. Il existe des pics spécialement conçus à cet effet présentant à un endroit approprié une buse d'éjection d'eau.It is known to spray water on the massif to be felled in the vicinity of each peak. There are spikes specially designed for this purpose, presenting a water ejection nozzle at a suitable location.

Il est souhaitable de réduire au strict minimum nécessaire la consommation de l'eau utilisée et par conséquent, de n'alimenter à un instant donné que les pics qui sont en contact avec le charbon, c'est-à-dire d'une part les pics du disque rouilleur, d'autre part les pics du secteur cylindrique qui sont en contact avec le massif à cet instant.It is desirable to reduce the consumption of the water used to the strict minimum necessary and therefore, to supply at a given moment only the peaks which are in contact with the coal, that is to say on the one hand the peaks of the rusting disc, on the other hand the peaks of the cylindrical sector which are in contact with the solid mass at this instant.

Le document GB-A-2.089.869 décrit un tambour de havage garni de pics à sa périphérie avec une arrivée d'eau dans une chambre centrale à partir de laquelle partent des canaux radiaux qui communiquent respectivement avec des secteurs périphériques d'alimentation en eau des pics de havage ; mais ceci ne constitue qu'un unique moyen de fourniture d'eau à l'ensemble des pics du tambour. Une valve, contrôlée par la rotation du tambour, envoie l'eau à un ou plusieurs canaux radiaux, limitant ainsi l'arrosage aux secteurs raccordés, qui correspondent au cas normal de la position de travail du tambour. Aucune possibilité n'est prévue pour changer la position de la valve selon la direction de havage ou la position, haute ou basse, du tambour.The document GB-A-2,089,869 describes a cutting drum with peaks at its periphery with a water inlet in a central chamber from which leave radial channels which communicate respectively with peripheral water supply sectors cutting peaks; but this is only a single means of supplying water to all of the drum peaks. A valve, controlled by the rotation of the drum, sends the water to one or more radial channels, thus limiting watering to the connected sectors, which correspond to the normal case of the working position of the drum. No possibility is provided for changing the position of the valve according to the direction of cutting or the position, high or low, of the drum.

Le but principal de l'invention est, en conséquence, de parvenir à un dispositif distributeur d'eau d'arrosage se montant dans la partie centrale d'un tambour d'abattage et comprenant trois circuits d'alimentation qui assurent l'alimentation permanente des pics du disque rouilleur et l'alimentation sélective des pics de deux secteurs cylindriques latéraux en fonction du sens de déplacement horizontal du tambour.The main object of the invention is, therefore, to achieve a device for distributing sprinkling water mounted in the central part of a slaughter drum and comprising three supply circuits which provide permanent supply rust disk peaks and selective feeding of the peaks of two lateral cylindrical sectors as a function of the direction of horizontal movement of the drum.

Sur un tambour de havage ayant face extrême munie de pics, appelée disque rouilleur, une surface cylindrique munie de pics dans laquelle on distingue deux secteurs cylindriques opposés ayant deux parties diamétralement opposées et susceptibles d'avoir une partie commune, ce tambour ayant aussi une zone centrale par laquelle il est monté sur un arbre fixe qui présente au moins une face extrême libre, selon l'invention, il est prévu dans l'arbre et dans la zone centrale du tambour trois canalisations concentriques à l'arbre et au tambour dans lesquelles il existe une première canalisation intérieure cylindrique, une deuxième canalisation intermédiaire annulaire et une troisième canalisation extérieure annulaire qui sont raccordées chacune par l'une de leurs extrémités à une arrivée d'eau comprenant une vanne d'arrêt ; ces canalisations aboutissent individuellement chacune soit à des canaux conduisant aux pics du disque rouilleur, soit à des chambres sectorielles annulaires convenables ménagées sur l'arbre, auxquelles correspondent des canaux qui sont répartis circonférentiellement sur le tambour et qui sont réunis chacun. par exemple, par un flexible à un pic correspondant.On a cutting drum having an end face provided with peaks, called a rusting disc, a cylindrical surface provided with peaks in which there are two opposite cylindrical sectors having two diametrically opposite parts and capable of having a common part, this drum also having an area central by which it is mounted on a fixed shaft which has at least one free end face, according to the invention, there are provided in the shaft and in the central zone of the drum three concentric pipes to the shaft and to the drum in which there is a first cylindrical inner pipe, a second annular intermediate pipe and a third annular outside pipe which are each connected by one of their ends to a water inlet comprising a stop valve; these pipes each individually lead either to channels leading to the peaks of the rusting disc, or to suitable annular sectoral chambers formed on the shaft, to which correspond channels which are distributed circumferentially on the drum and which are each joined together. for example, by a hose to a corresponding peak.

De préférence, la première canalisation intérieure cylindrique aboutit aux pics du disque rouilleur.Preferably, the first cylindrical inner pipe leads to the peaks of the rusting disc.

De préférence aussi, la deuxième canalisation intermédiaire est plus longue par sa partie extrême terminale que la troisième canalisation extérieure et plusieurs canaux radiaux réunissent ces canalisations aux chambres sectorielles annulaires correspondantes qui sont situées dans des plans transversaux espacés en sens axial.Preferably also, the second intermediate pipe is longer by its end end portion than the third external pipe and several radial channels join these pipes to the corresponding annular sectoral chambers which are located in transverse planes spaced in the axial direction.

Sur un bras de havage, l'espace disponible en sens axial est extrêmement limité.On a lifting arm, the space available in the axial direction is extremely limited.

Selon l'invention, avantageusement, à leurs extrémités éloignées du disque rouilleur du tambour, les canalisations ménagées dans l'arbre se terminent à proximité d'un disque fixe transversal dans lequel sont creusés des canaux d'alimentation radiaux dans un même plan perpendiculaire à l'axe du tambour ; ces canaux d'alimentation sont raccordés par leurs extrémités extérieures à des tubes d'arrivée d'eau ; leurs extrémités intérieures sont prolongées par des passages internes jusqu'aux extrémités des canalisations. De cette façon, avec un faible encombrement en sens axial, on peut alimenter par plusieurs tubes d'arrivée d'eau et plusieurs passages internes, l'une quelconque des canalisations, en fonction du débit d'arrosage nécessaire.According to the invention, advantageously, at their ends remote from the rusting disc of the drum, the pipes formed in the shaft end near a fixed transverse disc in which radial feed channels are dug in the same plane perpendicular to the axis of the drum; these supply channels are connected by their outer ends to water inlet tubes; their inner ends are extended by internal passages up to the ends of the pipes. In this way, with a small footprint in the axial direction, it is possible to feed by several water inlet tubes and several internal passages, any one of the pipes, according to the required watering rate.

On donnera maintenant, sans intention limitative et sans exclure aucune variante, une description d'un mode préféré de réalisation. On se reportera aux dessins annexes dans lesquels :

  • - la figure 1 est une représentation schématique de la position de deux tambours de havage sur des bras de havage, faisant comprendre la nécessité de l'alimentation sectorielle des pics,
  • - la figure 2, est une représentation schématique d'un tambour de havage en position haute et en position basse montrant les secteurs utilisés,
  • - la figure 3 est une vue partielle en coupe selon III-III de la figure 5,
  • - la figure 4 est une vue partielle en coupe selon IV-IV de la figure 5,
  • - la figure 5 est une vue partielle en coupe longitudinale par un plan passant par l'axe de l'arbre fixe qui porte un tambour de havage,
  • - la figure 6 est une vue en coupe longitudinale comme la figure 5 de la partie extrême de l'arbre éloignée du disque rouilleur du tambour de havage,
  • - la figure 7 est une vue en coupe selon VII-VII de la figure 6. -
  • La figure 1 montre schématiquement un premier tambour de havage 1 et un second tambour de havage 2 qui équipent une haveuse se déplaçant en sens horizontal de la droite vers la gauche, comme indiqué par une flèche F1. Le premier tambour 1 est en position haute et le second tambour 2 est en position basse. A la fin de la course en sens F1, la haveuse se déplace en sens opposé F2 après basculement des tambours 1, 2 comme indiqué par des flèches F3, de sorte que le premier tambour 1 se met en position basse et que le second tambour 2 se met en position haute.
  • La figure 2 montre plus clairement le changement des secteurs actifs par lesquels le charbon est attaqué, qui résulte du changement de position haute ou basse du tambour 1 à la suite de son basculement selon F3, autour d'un centre 0. En position haute, tout le secteur cylindrique G gauche de la surface latérale du tambour 1 est actif sur 180°. En position basse, le secteur cylindrique D droit est actif sur 120°. Du fait du basculement les deux secteurs G et D ont une partie commune C indiquée par des hachures serrées qui est toujours active.
We will now give, without limiting intention and without excluding any variant, a description of a preferred embodiment. Reference is made to the accompanying drawings in which:
  • FIG. 1 is a schematic representation of the position of two cutting drums on cutting arms, showing the need for sectoral supply of the peaks,
  • FIG. 2 is a schematic representation of a lifting drum in the high position and in the low position showing the sectors used,
  • FIG. 3 is a partial sectional view along III-III of FIG. 5,
  • FIG. 4 is a partial sectional view along IV-IV of FIG. 5,
  • FIG. 5 is a partial view in longitudinal section through a plane passing through the axis of the fixed shaft which carries a lifting drum,
  • FIG. 6 is a view in longitudinal section like FIG. 5 of the end part of the shaft remote from the rusty disc of the cutting drum,
  • - Figure 7 is a sectional view along VII-VII of Figure 6. -
  • FIG. 1 schematically shows a first cutting drum 1 and a second cutting drum 2 which equip a cutting machine moving horizontally from right to left, as indicated by an arrow F 1 . The first drum 1 is in the high position and the second drum 2 is in the low position. At the end of the stroke in direction F 1 , the cutter moves in the opposite direction F 2 after tilting the drums 1, 2 as indicated by arrows F 3 , so that the first drum 1 is put in the low position and the second drum 2 moves to the high position.
  • FIG. 2 shows more clearly the change in the active sectors by which the coal is attacked, which results from the change of high or low position of the drum 1 following its tilting according to F 3 , around a center 0. In the high position , the entire left cylindrical sector G of the lateral surface of the drum 1 is active over 180 °. In the low position, the right cylindrical sector D is active over 120 °. Due to the tilting, the two sectors G and D have a common part C indicated by tight hatching which is always active.

Les pics de la partie commune C des secteurs ont besoin d'être arrosés en permanence, ceux du reste du secteur cylindrique G gauche et ceux du reste du secteur cylindrique D droit ont besoin d'être arrosés seulement quand le tambour de havage est en position haute ou basse respectivement. Le dispositif d'arrosage sectoriel de l'invention procure ce résultat. En plus, il assure l'alimentation permanente en eau des pics du disque rouilleur qui attaquent le charbon dans les deux positions du tambour 1.The peaks of the common part C of the sectors need to be constantly sprinkled, those of the rest of the left cylindrical sector G and those of the rest of the right cylindrical sector D need to be watered only when the cutting drum is in position high or low respectively. The sectoral sprinkler device of the invention provides this result. In addition, it ensures the permanent supply of water to the peaks of the rusting disc which attack the carbon in the two positions of the drum 1.

Un tambour de havage 1 étant bien connu de l'homme de l'art et, comme il n'est pas concerné dans son ensemble par l'invention, on ne le décrira pas en détail. Ce tambour 1 a une partie centrale 2 qui est montée tournante sur un arbre 3 immobile en rotation (figure 5). Cet arbre 3 est creux ; il est creusé de trous longitudinaux à diamètres étagés qui contiennent trois tubes 4, 5, 6 concentriques entre eux et concentriques à l'axe de l'arbre 3, faisant apparaître ainsi une première canalisation intérieure cylindrique 7, une deuxième canalisation intermédiaire annulaire 8 et une troisième canalisation extérieure annulaire 9, également concentriques.A cutting drum 1 being well known to those skilled in the art and, as it is not generally concerned with the invention, it will not be described in detail. This drum 1 has a central part 2 which is rotatably mounted on a shaft 3 which is stationary in rotation (FIG. 5). This tree 3 is hollow; it is hollowed out of longitudinal holes with stepped diameters which contain three tubes 4, 5, 6 concentric with each other and concentric with the axis of the shaft 3, thus making appear a first cylindrical inner pipe 7, a second annular intermediate pipe 8 and a third annular external pipe 9, also concentric.

A la partie extrême de l'arbre 3 qui est proche du tambour, représentée sur la figure 5, la première canalisation intérieure cylindrique 7 est prolongée par un canal 7A jusqu'à un embout central de raccordement 10 à partir duquel partent des tuyaux souples 10A qui aboutissent aux pic du disque rouilleur.At the extreme part of the shaft 3 which is close to the drum, shown in FIG. 5, the first cylindrical inner pipe 7 is extended by a channel 7A to a central connection piece 10 from which flexible hoses 10A leave which lead to the peaks of the rusty disc.

La deuxième canalisation intermédiaire 8 et la troisième canalisation extérieure 9 se terminent par des parties extrêmes situées dans des plans transversaux IV-IV et III-III respectivement, espacés en sens axial de l'arbre 3, dans lesquels sont ménagés des canaux radiaux 11, 12 respectivement. Dans le plan III-III, figure 3, les canaux radiaux 12 se terminent, dans l'épaisseur de l'arbre 3, dans une chambre sectorielle annulaire 13, contenue dans ce plan creusée à la surface de l'arbre 3, et se développant sur 180°. Toujours dans le plan III-III, des canaux radiaux 14 sont prévus dans la partie centrale 2 du tambour 1 ; leur nombre correspond à celui des pics de la face latérale du tambour 1 et ils sont espacés régulièrement en sens circonférentiel. Ils sont prolongés chacun dans le tambour 1 par des canaux longitudinaux 15 puis par des canaux radiaux terminaux 16 (figure 5) qui aboutissent à des embouts de raccordement 17 d'où partent des flexibles 18. Ces derniers s'étendent respectivement chacun jusqu'aux pics de la surface latérale du tambour.The second intermediate pipe 8 and the third external pipe 9 terminate in end portions located in transverse planes IV-IV and III-III respectively, spaced apart in axial direction from the shaft 3, in which radial channels 11 are formed, 12 respectively. In the plane III-III, FIG. 3, the radial channels 12 end, in the thickness of the shaft 3, in an annular sectoral chamber 13, contained in this plane hollowed out on the surface of the shaft 3, and developing over 180 °. Still in the plane III-III, radial channels 14 are provided in the central part 2 of the drum 1; their number corresponds to that of the peaks of the lateral face of the drum 1 and they are regularly spaced in the circumferential direction. They are each extended in the drum 1 by longitudinal channels 15 and then by terminal radial channels 16 (FIG. 5) which lead to connection end pieces 17 from which flexible hoses 18. These last each extend respectively to peaks of the lateral surface of the drum.

Dans le plan IV-IV, il existe une disposition analogue à celle qui vient d'être décrite. Les canaux radiaux 11 se terminent dans une chambre sectorielle annulaire 19, creusée à la surface de l'arbre 3, mais qui ne s'étend que sur un arc de 120°. Dans la partie centrale du tambour 1, des canaux radiaux 20 suivis de canaux longitudinaux 21 sont reliés aux embouts de raccordement 17, aux flexibles 18 et aux pics.In plan IV-IV, there is a provision similar to that just described. The radial channels 11 terminate in an annular sectoral chamber 19, hollowed out on the surface of the shaft 3, but which only extends over an arc of 120 °. In the central part of the drum 1, radial channels 20 followed by longitudinal channels 21 are connected to the connection end pieces 17, to the hoses 18 and to the peaks.

Les deux chambres sectorielles annulaires 13 et 19 sont disposées, en sens circonférentiel, en correspondance avec les secteurs actifs G et D du tambour 1 (figure 1) et elles se recouvrent en concordance avec la partie commune C. Pendant la rotation du tambour 1, les pics qui sont réunis aux canaux radiaux 14 et 20 sont alimentés en eau seulement quand ces canaux passent, en tournant, en regard des chambres sectorielles 13 et 19. Ces dernières sont alimentées en eau par la troisième canalisation extérieure annulaire 9 ou par la deuxième canalisation intermédiaire annulaire 8 selon la position haute ou basse du tambour 1. Des clapets anti-retour 22, 23 sont prévus sur les canaux longitudinaux 15, 21 (figure 5) pour éviter que l'eau envoyée par un circuit reflue par l'autre circuit. Les canalisations concentriques 7, 8, 9 sont alimentées en eau, de manière continuelle pour la canalisation 7, de manière alternée pour les canalisations 8, 9 à l'extrémité de l'arbre 3 éloignée du disque rouilleur du tambour, de préférence de la façon que l'on décrira maintenant en se référant aux figures 6 et 7.The two annular sectoral chambers 13 and 19 are arranged, in circumferential direction, in correspondence with the active sectors G and D of the drum 1 (FIG. 1) and they overlap in accordance with the common part C. During the rotation of the drum 1, the peaks which are joined to the radial channels 14 and 20 are supplied with water only when these channels pass, in rotation, opposite the sectoral chambers 13 and 19. The latter are supplied with water by the third annular external pipe 9 or by the second annular intermediate pipe 8 according to the high or low position of the drum 1. Non-return valves 22, 23 are provided on the longitudinal channels 15, 21 (FIG. 5) to prevent the water sent by one circuit from flowing back from the other circuit. The concentric pipes 7, 8, 9 are supplied with water, continuously for the pipe 7, alternately for the pipes 8, 9 at the end of the shaft 3 remote from the rusting disc of the drum, preferably from the as will now be described with reference to FIGS. 6 and 7.

Du côté de l'arrivée de l'eau d'alimentation, les tubes 4, 5, 6 et par conséquent, les canalisations concentriques 7, 8, 9 se terminent dans des plans espacés en sens axial, et chaque canalisation débouche dans un volume d'alimentation 24, 25, 26 respectivement situé dans son prolongement. Ces volumes 24, 25, 26 et les parties extrêmes des tubes 4, 5, 6 se trouvent dans une pièce fixe 27 se terminant par un disque 28 disposé dans un plan transversal à l'axe du tambour de havage. Ce disque 28 a l'épaisseur juste suffisante pour permettre d'y creuser des canaux d'alimentation radiaux 29, 30, 31, 32. Ces derniers sont donc espacés en sens circonférentiel ; à leurs extrémités extérieures, ils sont raccordés à des tubes d'arrivée d'eau 33, 34, 35, 36 respectivement. Le canal d'alimentation radial 29-débouche directement dans le volume d'alimentation 26 de la première canalisation intérieure cylindrique 7. Le canal d'alimentation radial 30 est relié par des passages internes (un passage longitudinal 37 puis un passage radial 38 creusés dans la pièce fixe 27) au volume d'alimentation 25 de la deuxième canalisation annulaire intermédiaire 8. Les deux canaux d'alimentation 31, 32 aboutissent tous deux au volume d'alimentation 24 de la troisième canalisation annulaire extérieure 9 par l'intermédiaire de passages internes longitudinaux 39 et radiaux 40. Avec un disque 28 de faible épaisseur et par conséquent de faible encombrement en sens axial, on peut alimenter chacune des canalisations concentriques 7, 8, 9 à l'aide de plusieurs tubes d'arrivée d'eau 33 à 36 si le débit l'exige. Sur les tubes d'arrivée d'eau 34 et 35, 36 sont montées des vannes d'arrêt (non représen- , tées) qui sont ouvertes ou fermées, automatiquement, en fonction de la position haute ou basse donnée au tambour de havage.On the supply water inlet side, the tubes 4, 5, 6 and consequently, the concentric pipes 7, 8, 9 end in planes spaced apart in an axial direction, and each pipe opens into a volume supply 24, 25, 26 respectively located in its extension. These volumes 24, 25, 26 and the end parts of the tubes 4, 5, 6 are located in a fixed part 27 ending in a disc 28 arranged in a plane transverse to the axis of the cutting drum. This disc 28 has the thickness just sufficient to allow the radial feed channels 29, 30, 31, 32 to be dug therein. The latter are therefore spaced apart in circumferential direction; at their outer ends, they are connected to water inlet tubes 33, 34, 35, 36 respectively. The radial supply channel 29-opens directly into the supply volume 26 of the first cylindrical inner pipe 7. The radial supply channel 30 is connected by internal passages (a longitudinal passage 37 then a radial passage 38 dug in the fixed part 27) to the supply volume 25 of the second intermediate annular pipe 8. The two supply channels 31, 32 both terminate in the supply volume 24 of the third external annular pipe 9 via passages longitudinal and radial internal internals 40. With a disc 28 of small thickness and consequently of compactness in the axial direction, it is possible to supply each of the concentric pipes 7, 8, 9 using several water inlet tubes 33 to 36 if the debit requires it. On the water inlet tubes 34 and 35, 36 are mounted shut-off valves (not shown) which are opened or closed, automatically, according to the high or low position given to the lifting drum.

L'étendue en sens circonférentiel des chambres sectorielles 13, 19 est choisie en correspondance avec celle des secteurs cylindriques actifs G, D du tambour de havage. L'étendue du secteur actif G en position haute du tambour est généralement de 180°, bien que l'on puisse souhaiter faire l'arrosage sur une étendue plus grande susceptible d'atteindre 210°/environ. L'étendue angulaire du secteur actif D en position basse du tambour est variable selon la hauteur du front de taille ; elle peut se situer en pratique entre 60° et 180°.The extent in the circumferential direction of the sectoral chambers 13, 19 is chosen in correspondence with that of the active cylindrical sectors G, D of the lifting drum. The extent of the active sector G in the high position of the drum is generally 180 °, although it may be desired to water over a greater extent capable of reaching 210 ° / approximately. The angular extent of the active sector D in the lower position of the drum is variable according to the height of the cutting face; in practice it can be between 60 ° and 180 °.

Claims (6)

1. A device for the sectorial spraying of the picks of a shearer drum (1) having an end face or kerfing disc equipped with picks and a cylindrical surface equipped with picks which is subdivided into two opposite cylindrical sectors (G, D) with a possible common portion (C), the said opposite sectors (G, D) being active in an alternating cycle in accordance with the direction of travel of the drum (1), characterised in that it comprises in the centre portion of the drum (1) three concentric channels (7, 8, 9) each of which is connected at one end to at least one water supply tube (33...36) and which lead individually to conduits (10A) extending to the picks of the kerfing disc and to stationary, annular, sectorial chambers (13. 19), respectively, to which correspond conduits (14, 20) which are movable along an orbita path and distributed circumferentially and connected to the picks of the cylindrical lateral surface of the shearer drum (1), the said sectorial chambers (13, 19) having relative positions and circumferential expanse corresponding to those of the active cylindrical sectors (G, D) of the drum (1).
2. The device according to claim 1, characterised in that the first, inner, channel (7) is cylindrical and extended by a conduit (7A) to a central . connector (10) for the picks of the kerfing disc.
3. The device according to claim 2, characterised in that the second, annular, intermediate channel (8) exceeds in length by its end portion the third, annular, outer channel (9), and in that a plurality of respective radial conduits (11, 12) connect these channels to corresponding sectorial chambers (13, 19) which are disposed at transverse levels spaced at axial intervals.
4. The device according to claim 1, characterised in that the angular expanse of the sectorial chamber (13), which corresponds to a cylindrical sector (G) that is active when the shearer drum (1) is in the upper position, is between 180° and 210°, whereas the angular expanse of the sectorial chamber (19), which corresponds to a cylindrical sector (D) that is active when the shearer drum (1) is in the lower position, is between 60° and 180°.
5. The device according to claim 1, characterised in that the concentric channels (7, 8, 9), at their end facing away from the kerfing disc of the shearer drum (1), terminate in proximity of a stationary transverse disc (28) in which there are, disposed in the same plane perpendicular to the axis of the drum, radial feeder conduits (29, 30, 31, 32) whose outward ends are connected to water supply tubes and whose inward ends extend via internal passages (39, 40) to the ends of the concentric channels (7, 8, 9).
6. The device according to claim 5, characterised in that at least one concentric channel (9) is connected via internal passages (39, 40) to two radial feeder conduits (31, 32) located in the transverse disc (28).
EP85402237A 1984-11-20 1985-11-19 Sector spraying device in coal mining Expired EP0185571B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402237T ATE37070T1 (en) 1984-11-20 1985-11-19 SECTOR BLOWING EQUIPMENT IN COAL PRODUCTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8417654 1984-11-20
FR8417654A FR2573474B1 (en) 1984-11-20 1984-11-20 SECTORAL WATERING DEVICE FOR COAL SLAUGHTERING

Publications (2)

Publication Number Publication Date
EP0185571A1 EP0185571A1 (en) 1986-06-25
EP0185571B1 true EP0185571B1 (en) 1988-09-07

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EP85402237A Expired EP0185571B1 (en) 1984-11-20 1985-11-19 Sector spraying device in coal mining

Country Status (12)

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US (1) US4660892A (en)
EP (1) EP0185571B1 (en)
JP (1) JPS61165489A (en)
CN (1) CN1004365B (en)
AT (1) ATE37070T1 (en)
AU (1) AU581945B2 (en)
DE (1) DE3564846D1 (en)
ES (1) ES8609580A1 (en)
FR (1) FR2573474B1 (en)
IN (1) IN165786B (en)
PL (1) PL149309B1 (en)
ZA (1) ZA858856B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8612968D0 (en) * 1986-05-28 1986-07-02 Presswell Eng Ltd Operating head
US5507565A (en) * 1994-12-19 1996-04-16 Eimco Coal Machinery, Inc. Method and apparatus for suppressing dust and frictional ignition on a continuous mining machine
US6070944A (en) * 1997-08-11 2000-06-06 Eimco Llc Phasing valve assembly for supplying water to a mining machine cutter drum
GB2333548B (en) * 1997-08-11 2001-12-12 Eimco Coal Machinery Inc A method and apparatus for supplying water to a mining machine cutter drum
GB0200880D0 (en) * 2002-01-16 2002-03-06 Hydra Mining Tools Internat Lt Rotary cutting head for a mining etc machine
CN106837327A (en) * 2017-04-07 2017-06-13 中国矿业大学 A kind of water-saving and synergistic automatic control hydraulic cutterhead

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Publication number Priority date Publication date Assignee Title
GB1110763A (en) * 1963-10-29 1968-04-24 Coal Industry Patents Ltd Dust suppression means for use with mining machines
DE1242539B (en) * 1964-12-05 1967-06-22 Eickhoff Geb Device for the supply of liquid to spray nozzles distributed over the circumference of a rotating extraction tool, in particular a scraper roller
US3374033A (en) * 1966-02-21 1968-03-19 Lee Norse Co Cutter head having fluid supply means
GB1378456A (en) * 1972-05-19 1974-12-27 Coal Industry Patents Ltd Apparatus for ventilating cutter-heads of mineral mining machines
GB1550492A (en) * 1976-11-16 1979-08-15 Coal Industry Patents Ltd Mineral mining machines
DE2808915C2 (en) * 1978-03-02 1982-07-29 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Roller cutting machine for underground mining
DE3049146C2 (en) * 1980-12-24 1984-05-10 Friedrich Wilhelm 4230 Wesel Paurat Cutter roller with spray nozzles, which is divided into spraying sectors
DE3139012C2 (en) * 1981-10-01 1985-02-21 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Roller cutting machine for underground mining
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
AT378037B (en) * 1982-09-09 1985-06-10 Voest Alpine Ag DEVICE FOR SUPPLYING A PRESSURIZED LIQUID TO A ROTATING MACHINE PART
DE3246991A1 (en) * 1982-12-18 1984-06-20 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum DEVICE FOR CONTROLLING HIGH PRESSURE LIQUID
AT378036B (en) * 1983-04-11 1985-06-10 Voest Alpine Ag METHOD FOR SPRAYING THE CHISELS AND / OR LOCAL CHEST WITH PRESSURE LIQUID AND DEVICE FOR CARRYING OUT THIS METHOD

Also Published As

Publication number Publication date
DE3564846D1 (en) 1988-10-13
PL149309B1 (en) 1990-01-31
ZA858856B (en) 1986-08-27
CN85108377A (en) 1986-10-01
ES8609580A1 (en) 1986-07-16
ATE37070T1 (en) 1988-09-15
CN1004365B (en) 1989-05-31
PL256284A1 (en) 1986-09-23
FR2573474B1 (en) 1986-12-26
IN165786B (en) 1990-01-13
AU581945B2 (en) 1989-03-09
ES549006A0 (en) 1986-07-16
EP0185571A1 (en) 1986-06-25
FR2573474A1 (en) 1986-05-23
US4660892A (en) 1987-04-28
AU5002685A (en) 1986-05-29
JPH0327720B2 (en) 1991-04-16
JPS61165489A (en) 1986-07-26

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