EP0181318A1 - Dispositif pour l'alimentation d'eau sous pression aux buses de sortie à la périphérie d'une haveuse minière - Google Patents

Dispositif pour l'alimentation d'eau sous pression aux buses de sortie à la périphérie d'une haveuse minière Download PDF

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Publication number
EP0181318A1
EP0181318A1 EP85890264A EP85890264A EP0181318A1 EP 0181318 A1 EP0181318 A1 EP 0181318A1 EP 85890264 A EP85890264 A EP 85890264A EP 85890264 A EP85890264 A EP 85890264A EP 0181318 A1 EP0181318 A1 EP 0181318A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
chisel
bit
valve
nozzles
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.)
Granted
Application number
EP85890264A
Other languages
German (de)
English (en)
Other versions
EP0181318B1 (fr
Inventor
Wilfried Maier
Franz Dipl.-Ing. Schöffmann
Herwig Wrulich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine AG
Original Assignee
Voestalpine AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0181318A1 publication Critical patent/EP0181318A1/fr
Application granted granted Critical
Publication of EP0181318B1 publication Critical patent/EP0181318B1/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
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles

Definitions

  • the invention relates to a device for supplying water under pressure to outlet nozzles on the periphery of a cutting tool which is equipped with chisels, the shafts of which are axially displaceably mounted in chisel holders, the water emerging from the nozzles depending on the displacement movement of the chisel and the water volume to be sprayed out can be supplied to a space in the bit holder via a check valve, into which the bit shaft or a part connected to it is immersed.
  • a device of the type mentioned in which the supply of water to the nozzles was made dependent on the displacement movement of the chisel, has already become known from EU-PS 10534. Furthermore, proposals have already become known in which the axial sliding movement of the chisel came into effect via a tappet on a valve arranged coaxially to the axis of the chisel, special chisels, for example cap chisels, being generally provided in such designs.
  • the invention now aims to develop a device of the type mentioned in such a way that with the shortest possible axial length, a functionally reliable design with the possibility of a wide adaptation to the to provide given water supply pressure at which a large volume can be ejected with a small bit stroke and, if necessary, an adjustable damping of the bit stroke can be realized.
  • the invention consists essentially in the fact that the check valve and the valve spring are arranged in a sleeve which is overlapped by a hollow cylindrical part of the chisel shaft or a part which is non-positively connected to it when the chisel is immersed.
  • a correspondingly strongly dimensioned spring can also be obtained with the smallest overall height Be housed, as is required for closing the check valve at high supply pressure.
  • the volume that can be sprayed out is composed of the volume of the annular space surrounding the sleeve and the cavity that engages over the sleeve when immersed.
  • openings in particular an axial bore, can be arranged in this detachable spring plate, the bushing then at least one radial opening into the space surrounding the bushing at a distance from the spring plate having.
  • the hollow cylindrical part of the chisel shaft or the part connected to this with a positive fit overlaps the bushing almost without play or with the formation of a throttle ring gap
  • a throttling effect can be achieved by selecting the clear cross section of the openings in the detachable spring plate , which dampens the insertion stroke of the chisel or of the part which is non-positively connected to the chisel shaft. Since the spring plate is detachably connected to the sleeve, this part can also be easily replaced and the damping behavior of the insertion stroke can be adjusted within wide limits.
  • a throttle cross-section or throttle ring gap should remain between the outer wall of the bush and the hollow cylindrical part spanning the bush.
  • the damping does not have to be provided from the beginning, ie from the beginning of the insertion stroke, but can in this case be used when the edge of the hollow cylindrical part slides over the upper edge of the sleeve.
  • the bush is connected to a preferably screw-in cover for a sleeve.
  • the sleeve is integrally connected to this sleeve and is formed coaxially therewith, with the chisel shaft or a non-positively connected part being sealingly guided in the sleeve and a central water supply hole being provided on the end cover for the valve seat of the check valve arranged at the base of the sleeve is.
  • the axial stroke of the bit shank is advantageously limited by separate stops, the maximum stroke of the bit shaft into the interior of the bit holder being smaller than the maximum stroke of the force-fit with the bit shaft connected part in the interior of the sleeve. It therefore suggests the inward stroke of the M always kampfelschaftes the first drill collar at the base or the corresponding stop and there are no forces effective on the plunger which it into a deformation or could cause the can.
  • the nozzle is advantageously connected to the space for the volume to be sprayed out via a channel and at least one radial opening in the sleeve.
  • the nozzle either has a throttle cross-section to ensure that when the plunger is rapidly inwardly lifted, the check valve is actually securely closed first before liquid is expelled and to ensure that a corresponding pressure for squeezing out liquid is reached.
  • a pressure relief valve can also be arranged in the line to the nozzle or in the nozzle itself. The arrangement of such a pressure relief valve in the nozzle itself in turn allows for simple removal, simple adjustment and simple Exchange of the individual parts.
  • the pressure relief valve is preferably arranged in the nozzle body and is supported against an adjustable spring plate or valve seat in the nozzle body.
  • a chisel 1 which is designed as a round chisel, is slidably received in a collar sleeve 3 pressed into a chisel holder 2 in the direction of its axis 4.
  • the maximum stroke of the chisel is designated with a and is limited by a stop on the collar of the sleeve 3.
  • a spring 5 is provided which engages in a lateral recess 6 of the chisel shaft 7.
  • the plunger 8 has a cylindrical cavity 10 which engages over a bush 11 when the chisel is immersed.
  • a check valve 12 is arranged, the valve spring is designated 13.
  • the spring plate of this valve spring is designed as a screw-in cover 14 for the bush 11 and has a central bore 15.
  • the bushing 11 has radial openings 16 near the valve seat 17, via which the water pressed in via the opening 15 is pressed into the surrounding annular space 18.
  • the inner diameter b of the hollow cylindrical space 10 in the plunger 8 is hiebei substantially equal to the outer diameter of the sleeve 11, so that with increasing overlap of the plunger 8 via the sleeve 11, the majority of the water squeezed out of the cylindrical cavity 10 actually through the bore 15 and the radial bores 16 is pressed into the annular space 18.
  • the bore 15 can be designed as a throttle cross section and allows the stroke of the chisel in to dampen accordingly. Due to the interchangeability of the spring plate 14, different spring plates with different clear cross sections of the openings 15 can be provided in order to achieve an adaptation to the needs.
  • the spring 13 can be replaced just as easily or regulated in the pretension by more or less screwing in the spring plate or by inserting washers.
  • the sleeve 9 has radial openings 19, into which channels 20 open for supplying the pressure medium to a nozzle 21.
  • the nozzle 21 consists of a nozzle body 22 which contains a pressure relief valve 23.
  • the pressure relief valve 23 is supported against a valve spring 24, the valve seat 25 being provided on a screw-in part 26 which is screwed into the nozzle body 22.
  • a screw-in part 26 which is screwed into the nozzle body 22.
  • the outward stroke of the plunger 8 in the sleeve 9 is limited by stops 28, so that the chisel can be replaced independently of an existing liquid pressure.
  • the water is supplied via a central bore 29, the valve seat 17 of the check valve being provided in an end cover 30, which can be removed together with the bushing 11. In this way, maintenance work and adjustment work are made considerably easier.
  • the front end of the plunger 8 which comes into contact with the chisel shaft 7 is formed from an impact-resistant material and is designated by 31.
  • the stroke a is smaller than the maximum Stroke of the plunger 8 so that there is no fear of the plunger being deformed by the force of the chisel.

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)
  • Percussive Tools And Related Accessories (AREA)
EP19850890264 1984-10-24 1985-10-23 Dispositif pour l'alimentation d'eau sous pression aux buses de sortie à la périphérie d'une haveuse minière Expired EP0181318B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0338684A AT381364B (de) 1984-10-24 1984-10-24 Einrichtung zur zufuehrung von wasser unter druck zu austrittsduesen am umfang eines schraemwerkzeuges
AT3386/84 1984-10-24

Publications (2)

Publication Number Publication Date
EP0181318A1 true EP0181318A1 (fr) 1986-05-14
EP0181318B1 EP0181318B1 (fr) 1987-09-16

Family

ID=3549744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850890264 Expired EP0181318B1 (fr) 1984-10-24 1985-10-23 Dispositif pour l'alimentation d'eau sous pression aux buses de sortie à la périphérie d'une haveuse minière

Country Status (3)

Country Link
EP (1) EP0181318B1 (fr)
AT (1) AT381364B (fr)
DE (1) DE3560647D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721802A1 (de) * 1986-07-17 1988-01-21 Voest Alpine Ag Sprueheinrichtung fuer kuehlfluessigkeit aus duesen eines schraemkopfes
EP0352243A1 (fr) * 1988-07-19 1990-01-24 Sandvik Aktiebolag Soupape d'alimentation en fluide pour le support d'un outil de coupe
DE19624363B4 (de) * 1995-07-06 2004-02-05 Rag Ag Meißelbestückte Gewinnungsmaschine mit Bedüsungsprüfeinrichtung
EP2572633A2 (fr) 2009-08-28 2013-03-27 UP-MED GmbH Dispositif de mesure de la pression sanguine et procédé de mesure de la pression sanguine d'un être vivant
WO2014146496A1 (fr) * 2013-03-21 2014-09-25 Liu Suhua Appareil d'alimentation en eau télescopique à va-et-vient de machine d'abattage par percussion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104747071B (zh) * 2015-01-12 2016-10-19 徐州博安科技发展有限责任公司 一种水动力钻进割缝方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2616880A1 (de) * 1976-04-15 1977-10-27 Bochumer Eisen Heintzmann Wechselventil
DE2854307A1 (de) * 1978-12-15 1980-07-03 Kennametal Inc Halter zur anbringung von meisseln, insbesondere von rundschaftmeisseln an bergbaulichen gewinnungs- und streckenvortriebsmaschinen
DE3007055A1 (de) * 1980-02-26 1981-09-17 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Spruehduese fuer eine bergwerksmaennische gewinnungsmaschine
GB2092205A (en) * 1981-01-29 1982-08-11 Mannesmann Ag Cutting bit carrier for a mineral cutting or other machine
EP0099350A1 (fr) * 1982-07-06 1984-01-25 VOEST-ALPINE Aktiengesellschaft Porte-outil équipé d'un dispositif de projection d'eau

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2616880A1 (de) * 1976-04-15 1977-10-27 Bochumer Eisen Heintzmann Wechselventil
DE2854307A1 (de) * 1978-12-15 1980-07-03 Kennametal Inc Halter zur anbringung von meisseln, insbesondere von rundschaftmeisseln an bergbaulichen gewinnungs- und streckenvortriebsmaschinen
DE3007055A1 (de) * 1980-02-26 1981-09-17 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Spruehduese fuer eine bergwerksmaennische gewinnungsmaschine
GB2092205A (en) * 1981-01-29 1982-08-11 Mannesmann Ag Cutting bit carrier for a mineral cutting or other machine
EP0099350A1 (fr) * 1982-07-06 1984-01-25 VOEST-ALPINE Aktiengesellschaft Porte-outil équipé d'un dispositif de projection d'eau

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721802A1 (de) * 1986-07-17 1988-01-21 Voest Alpine Ag Sprueheinrichtung fuer kuehlfluessigkeit aus duesen eines schraemkopfes
EP0352243A1 (fr) * 1988-07-19 1990-01-24 Sandvik Aktiebolag Soupape d'alimentation en fluide pour le support d'un outil de coupe
DE19624363B4 (de) * 1995-07-06 2004-02-05 Rag Ag Meißelbestückte Gewinnungsmaschine mit Bedüsungsprüfeinrichtung
EP2572633A2 (fr) 2009-08-28 2013-03-27 UP-MED GmbH Dispositif de mesure de la pression sanguine et procédé de mesure de la pression sanguine d'un être vivant
WO2014146496A1 (fr) * 2013-03-21 2014-09-25 Liu Suhua Appareil d'alimentation en eau télescopique à va-et-vient de machine d'abattage par percussion
EA029740B1 (ru) * 2013-03-21 2018-05-31 Сухуа Лю Ударный модуль возвратно-поступательного действия для горной машины

Also Published As

Publication number Publication date
DE3560647D1 (en) 1987-10-22
AT381364B (de) 1986-10-10
EP0181318B1 (fr) 1987-09-16
ATA338684A (de) 1986-02-15

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