EP0185571B1 - Dispositif d'arrosage sectoriel pour l'abattage du charbon - Google Patents

Dispositif d'arrosage sectoriel pour l'abattage du charbon 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
Authority
EP
European Patent Office
Prior art keywords
drum
disc
cylindrical
picks
sectorial
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
EP85402237A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0185571A1 (fr
Inventor
Jean-Joseph Demoulin
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.)
Charbonnages de France CDF
Original Assignee
Charbonnages de France CDF
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 Charbonnages de France CDF filed Critical Charbonnages de France CDF
Priority to AT85402237T priority Critical patent/ATE37070T1/de
Publication of EP0185571A1 publication Critical patent/EP0185571A1/fr
Application granted granted Critical
Publication of EP0185571B1 publication Critical patent/EP0185571B1/fr
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
    • E21C35/22—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 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nozzles (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (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)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Confectionery (AREA)
EP85402237A 1984-11-20 1985-11-19 Dispositif d'arrosage sectoriel pour l'abattage du charbon Expired EP0185571B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402237T ATE37070T1 (de) 1984-11-20 1985-11-19 Sektorenbeduesungseinrichtung bei der kohlengewinnung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8417654A FR2573474B1 (fr) 1984-11-20 1984-11-20 Dispositif d'arrosage sectoriel pour l'abattage du charbon
FR8417654 1984-11-20

Publications (2)

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

Family

ID=9309752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402237A Expired EP0185571B1 (fr) 1984-11-20 1985-11-19 Dispositif d'arrosage sectoriel pour l'abattage du charbon

Country Status (12)

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

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 (zh) * 2017-04-07 2017-06-13 中国矿业大学 一种节水增效自控水力截割头

Family Cites Families (12)

* Cited by examiner, † Cited by third party
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 (de) * 1964-12-05 1967-06-22 Eickhoff Geb Vorrichtung zur Fluessigkeitszufuhr zu ueber den Umfang eines rotierenden Abbauwerkzeuges, insbesondere einer Schraemwalze, verteilten Spruehduesen
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 (de) * 1978-03-02 1982-07-29 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Walzenschrämmaschine für den Untertagebergbau
DE3049146C2 (de) * 1980-12-24 1984-05-10 Friedrich Wilhelm 4230 Wesel Paurat Schrämwalze mit Sprühdüsen, welche in Bedüsungssektoren aufgeteilt ist
DE3139012C2 (de) * 1981-10-01 1985-02-21 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Walzenschrämmaschine für den Untertagebergbau
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 (de) * 1982-09-09 1985-06-10 Voest Alpine Ag Vorrichtung fuer die zufuehrung einer unter druck stehenden fluessigkeit zu einem rotierenden maschinenteil
DE3246991A1 (de) * 1982-12-18 1984-06-20 Gebr. Eickhoff Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Vorrichtung zum steuern von hochdruckfluessigkeit
AT378036B (de) * 1983-04-11 1985-06-10 Voest Alpine Ag Verfahren zum bespruehen der meissel und/oder der ortsbrust mit druckfluessigkeit sowie vorrichtung zur durchfuehrung dieses verfahrens

Also Published As

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

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