EP0235319A1 - Dispositif de pulvérisation pour machines de creusement - Google Patents

Dispositif de pulvérisation pour machines de creusement Download PDF

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Publication number
EP0235319A1
EP0235319A1 EP86102575A EP86102575A EP0235319A1 EP 0235319 A1 EP0235319 A1 EP 0235319A1 EP 86102575 A EP86102575 A EP 86102575A EP 86102575 A EP86102575 A EP 86102575A EP 0235319 A1 EP0235319 A1 EP 0235319A1
Authority
EP
European Patent Office
Prior art keywords
cutting head
spraying
cutting
pump
pressure
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Withdrawn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
EP86102575A
Other languages
German (de)
English (en)
Inventor
Lothar Dipl.-Ing. Baumann
Manfred Dipl.-Ing. Köpl
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.)
Kamat-Pumpen GmbH and Co KG
Bergwerksverband GmbH
Kamat Pumpen GmbH and Co KG
Original Assignee
Kamat-Pumpen GmbH and Co KG
Bergwerksverband GmbH
Kamat Pumpen GmbH and Co KG
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 Kamat-Pumpen GmbH and Co KG, Bergwerksverband GmbH, Kamat Pumpen GmbH and Co KG filed Critical Kamat-Pumpen GmbH and Co KG
Priority to EP86102575A priority Critical patent/EP0235319A1/fr
Publication of EP0235319A1 publication Critical patent/EP0235319A1/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Withdrawn legal-status Critical Current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
    • E21C35/22—Equipment for preventing the formation of, or for removal of, dust
    • E21C35/23—Distribution of spraying-fluids in rotating cutter-heads

Definitions

  • the invention relates to a device for spraying, in particular on tunneling machines of underground mining and tunneling, for example on partial cutting machines, with cutting tools arranged on the longitudinal and / or cross cutting head and associated with the cutting tools, intended for cooling, dust and spark impact control and for supporting the cutting performance Water nozzles, wherein the water supplied to the cutting head via a low-pressure rotary feedthrough is clamped in the cutting head to a spraying pressure of, for example, 100 to 1500 bar.
  • a device for cooling the chisels of a cutting machine which has a nozzle in the area of the chisel for the cooling water to be sprayed out under pressure.
  • the water supply to the nozzle can be shut off by a shut-off valve and the chisel on the chisel holder is counter to the force a spring and the hydraulic pressure of the cooling water limited axially displaceable by the cutting pressure.
  • the shut-off valve is connected to the chisel by a coupling element in such a way that it opens when the chisel is moved in the direction of the cutting pressure.
  • the coupling element is formed by a tappet which acts on the valve body and is guided in a central bore in the chisel shaft. The shut-off valve closes against the effect of the cutting pressure and is opened by the tappet in the direction of the cutting pressure.
  • Such a device is a complex chisel design which is susceptible to wear, in particular since the chisel is axially movable in a bushing, and the bushing is immovably stuck in the chisel holder and requires a special seal.
  • the axial movement of the chisel is not dampened and the spraying of the water can hardly be controlled.
  • the area of the plunger is extremely small, so that the path to the spraying of the water is released with little impact on the chisel, i. H. there is no possibility of controlling the amount of water via the pressure.
  • a round shank chisel in particular for part-cutting machines, is known, which during the cutting process only intermittently engages with the material to be cut and can be exchanged in a rotatable and axially limited manner by the cutting force against the pressure of the spray water Chisel holder held shaft and a hard metal blade arranged at the tip of the shaft outside the chisel holder.
  • a cavity is provided in the chisel holder in the direction of the cutting force behind the chisel on the one hand is connected to a spray water channel via a check valve and on the other hand has a spray water line which is directed approximately towards the hard metal cutting edge.
  • a round shank chisel guided in such a damped manner has the disadvantage that the corresponding water spraying only takes place if the chisel moves in an axial direction due to the reaction force occurring when the chisel engages in the rock or mineral.
  • the mineral or the rock is partially released by engaging the chisel when mining rock or mineral, for example when driving a section, with the aid of a partially cut tunneling machine, but also partially breaking out of the bond by the action of the neighboring chisel, constant intervention is one not guaranteed any chisel. In this way, several chisels cannot be adequately supplied with the required water spray.
  • the object of the invention is to provide a device for spraying, in particular on tunneling machines, for example on partial cutting machines, which is structurally simple, which avoids axial movement of the chisels and the wear which occurs and which moreover provides sectoral spraying the location, for example a cutting head, the area of which at least partially engages the rock or mineral.
  • This object is achieved in that in the cutting head at least one pump driven by the rotation of the cutting head via a cam disk and in the and / or the high-pressure lines connected downstream of a pump upstream of the nozzles tet designed as a sector control, controllable via a cam, valve control are provided.
  • the device according to the invention for spraying allows, first of all, the supply of water in the low pressure range in a structurally simple arrangement, for example at a pressure of 10 bar, via a corresponding rotary leadthrough into the cutting head.
  • a high pressure rotary union due to the technical problems connected with it.
  • the use of a high-pressure rotating union also requires the supply of high-tension water to the cutting head and thus the additional installation of appropriate pumps.
  • the device according to the invention for spraying has the advantage that the parts required for tensioning the water are arranged in a protected position in the cutting head.
  • a particular advantage of the invention can be seen in the fact that the spraying sector can be adjusted as desired by the adjustable design of the cam disk, which is fixed relative to the rotating cutting head, for example on the boom.
  • the generation of the pressurized water to a spray pressure of, for example, 100 to 1500 bar takes place using the rotary movement of the cutting head with the aid of a pump, for example a piston pump, the piston of which is driven by a cam disk.
  • the highly pressurized water is expediently fed to a storage tank which can additionally be equipped with a storage bladder in order to allow the water supplied by the pump in pulsating form to reach the nozzles in a uniform form.
  • the maximum pressure of the water up to approx. 1500 bar is only required if the water is required to support the cutting performance.
  • the highly tensioned water is fed to a valve control via water channels provided in the cutting head, which, driven by a cam, ensures sectoral atomization of the water.
  • the spraying angle corresponds to the opening angle of the cam.
  • the technical progress of the invention is essentially based on the fact that, while avoiding the previous sealing problems and the great wear of the chisel by the axial movement, a structurally simple and safe spraying device is created which, while avoiding a high level of maintenance, essentially contributes to the service life the cutting tools significantly.
  • the water required for the spraying for the purpose of cooling the dust and sparks control and to support the cutting performance is fed via a rotary leadthrough 7 and a low pressure line 8 displaced in the drive shaft 3 the cutting head 1 provided with cutting tools 5 leads.
  • the rotating drive shaft 3 connected to the cutting head 1 is displaced outside the cutting head 1 in the non-rotating boom 2.
  • the cutting head 1 is sealed off from the boom 2 with seals 4.
  • a cam disk 10 is provided in front of the cam disk 9 and is also arranged in a non-rotating attachment on the arm 2, the design of which cam also emerges from the section in FIG. 2.
  • a pump 11 is acted upon by the rotation of the cutting head 1, which is firmly connected to the drive shaft 3.
  • the pump 11 is designed as a piston pump, the piston 12 of which is returned to the starting position by a return spring 14.

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)
  • Shovels (AREA)
EP86102575A 1986-02-27 1986-02-27 Dispositif de pulvérisation pour machines de creusement Withdrawn EP0235319A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP86102575A EP0235319A1 (fr) 1986-02-27 1986-02-27 Dispositif de pulvérisation pour machines de creusement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86102575A EP0235319A1 (fr) 1986-02-27 1986-02-27 Dispositif de pulvérisation pour machines de creusement

Publications (1)

Publication Number Publication Date
EP0235319A1 true EP0235319A1 (fr) 1987-09-09

Family

ID=8194922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102575A Withdrawn EP0235319A1 (fr) 1986-02-27 1986-02-27 Dispositif de pulvérisation pour machines de creusement

Country Status (1)

Country Link
EP (1) EP0235319A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852947A (en) * 1986-05-28 1989-08-01 Pitcraft Summit Limited Operating head with phased fluid delivery
GB2216158A (en) * 1988-02-26 1989-10-04 Sasol Mining High pressure water assisted mining and tunnelling machine
US6450869B1 (en) 1998-07-23 2002-09-17 Naki Technologies Ltd. Hand held cutting tool and attachment therefor
US7387345B2 (en) * 2006-08-11 2008-06-17 Hall David R Lubricating drum
CN103334765A (zh) * 2013-07-12 2013-10-02 上海隧道工程股份有限公司 凸轮环马达盾构刀盘驱动装置
CN108049872A (zh) * 2017-12-07 2018-05-18 太原钢铁(集团)有限公司 一种露天矿山排土机除尘方法
CN109882171A (zh) * 2019-04-10 2019-06-14 佳木斯智研矿山机械有限公司 内喷雾装置及掘进机截割机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122323A1 (de) * 1981-06-05 1982-12-23 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Steuerung des druckwassers innenbeduester schneidwalzen
DE3216936A1 (de) * 1982-05-06 1983-11-17 Bergwerksverband Gmbh Beduesung an schneidend arbeitenden gewinnungswerkzeugen
DE3222580C1 (de) * 1982-06-16 1984-02-09 Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co Kg, 4300 Essen Schrämwalze, insbesondere für Walzenschrämlader

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122323A1 (de) * 1981-06-05 1982-12-23 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Steuerung des druckwassers innenbeduester schneidwalzen
DE3216936A1 (de) * 1982-05-06 1983-11-17 Bergwerksverband Gmbh Beduesung an schneidend arbeitenden gewinnungswerkzeugen
DE3222580C1 (de) * 1982-06-16 1984-02-09 Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co Kg, 4300 Essen Schrämwalze, insbesondere für Walzenschrämlader

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852947A (en) * 1986-05-28 1989-08-01 Pitcraft Summit Limited Operating head with phased fluid delivery
GB2216158A (en) * 1988-02-26 1989-10-04 Sasol Mining High pressure water assisted mining and tunnelling machine
AU608694B2 (en) * 1988-02-26 1991-04-11 Sasol Mining (Proprietary) Limited High pressure water assisted mining and tunnelling machine
US5114213A (en) * 1988-02-26 1992-05-19 Sasol Mining (Proprietary) Limited High pressure water assisted mining and tunnelling machine
US6450869B1 (en) 1998-07-23 2002-09-17 Naki Technologies Ltd. Hand held cutting tool and attachment therefor
US7387345B2 (en) * 2006-08-11 2008-06-17 Hall David R Lubricating drum
CN103334765A (zh) * 2013-07-12 2013-10-02 上海隧道工程股份有限公司 凸轮环马达盾构刀盘驱动装置
CN103334765B (zh) * 2013-07-12 2018-01-02 上海隧道工程有限公司 凸轮环马达盾构刀盘驱动装置
CN108049872A (zh) * 2017-12-07 2018-05-18 太原钢铁(集团)有限公司 一种露天矿山排土机除尘方法
CN108049872B (zh) * 2017-12-07 2019-07-09 太原钢铁(集团)有限公司 一种露天矿山排土机除尘方法
CN109882171A (zh) * 2019-04-10 2019-06-14 佳木斯智研矿山机械有限公司 内喷雾装置及掘进机截割机构
CN109882171B (zh) * 2019-04-10 2024-02-13 天津市汇智尘科技有限公司 内喷雾装置及掘进机截割机构

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: BAUMANN, LOTHAR, DIPL.-ING.

Inventor name: KOEPL, MANFRED, DIPL.-ING.