EP0111143B1 - Trépan à queue cylindrique à guidage amorti - Google Patents

Trépan à queue cylindrique à guidage amorti Download PDF

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Publication number
EP0111143B1
EP0111143B1 EP83110850A EP83110850A EP0111143B1 EP 0111143 B1 EP0111143 B1 EP 0111143B1 EP 83110850 A EP83110850 A EP 83110850A EP 83110850 A EP83110850 A EP 83110850A EP 0111143 B1 EP0111143 B1 EP 0111143B1
Authority
EP
European Patent Office
Prior art keywords
shank
pick
chisel
holder unit
round
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
EP83110850A
Other languages
German (de)
English (en)
Other versions
EP0111143A2 (fr
EP0111143A3 (en
Inventor
Klaus Ketterer
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
Priority to AT83110850T priority Critical patent/ATE36033T1/de
Publication of EP0111143A2 publication Critical patent/EP0111143A2/fr
Publication of EP0111143A3 publication Critical patent/EP0111143A3/de
Application granted granted Critical
Publication of EP0111143B1 publication Critical patent/EP0111143B1/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
    • 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
    • E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • E21C35/1837—Mining picks; Holders therefor with inserts or layers of wear-resisting material characterised by the shape
    • 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 round shank chisel, in particular for partial cutting machines in mining and tunneling, which consists of a shank which can be exchangeably fastened in a chisel holder and has a hard metal cutting edge arranged at the tip of the shank outside the chisel holder, as explained in the preamble of claim 1.
  • the cutting heads of partial-cut tunneling machines from extraction machines and other cutting machines, in particular in mining and tunneling, the construction industry and other industries, are equipped with chisels which can be exchangeably mounted in the tool holders welded onto the cutting heads.
  • chisels which can be exchangeably mounted in the tool holders welded onto the cutting heads.
  • picks are rotatably arranged within the bit holder.
  • the shaft chisel can be used in the chisel holder in such a way that it has a certain play both over its circumference and in the direction of its longitudinal axis relative to the chisel holder, which allows rotation.
  • the high wear caused by jamming a chisel can also occur due to the fact that fine rock powder penetrates into the annular gap between the chisel shaft and the chisel, briquettes there and finally increases the friction to such an extent that rotation of the chisel is excluded.
  • the required pressure is usually generated by high pressure pumps.
  • high-pressure pumps In addition to high-pressure pumps, corresponding high-pressure hoses or lines and complex seals are required in order to spray the high-pressure water through appropriate nozzles (see EP-A-0010534).
  • the invention has for its object to provide a round chisel that with the constantly repeated intervention in the mineral can thereby largely affect the occlusion affected and which, depending on its intervention in the rock, is also automatically supplied with the necessary high-pressure water for cooling.
  • the chisel holder can be closed at the lower end by means of a stopper and the chisel shaft in the chisel holder is designed to be displaceable by means of a clamping element and a guide, the cavity provided between the stopper and the end of the shaft via channels provided with a check valve Water is supplied which, when the chisel engages with the mineral to be cut, is sprayed as high pressure water via lines and nozzles.
  • the chisel is provided with a hard metal cutting edge, at least partially surrounding the shank outside of the chisel holder, designed as a sleeve, with a water channel with a pressure relief valve arranged centrally in the shank being provided in the shank is.
  • the technical progress of the invention is essentially due to the fact that the damping allows an adaptation to the intervention in the mineral and thus reduces the previous impact effects to a large extent.
  • the energy extracted from the chisel by damping is used to pressurize the water supplied at low pressure to high pressure.
  • the high-pressure water used for the round-shaft chisel also flushes the annular gap between the chisel shaft and the chisel holder of rock powder or is sprayed through additional nozzles for cooling.
  • FIG. 1 shows a chisel 1 mounted in a chisel holder 4, which is displaceably mounted in the chisel holder 4 in the axial direction with its shank 3 which has a smaller diameter than the cutting edge.
  • the bit 1 is designed as a round shank chisel, the cutting edge 2 being shaped as a sleeve 20.
  • the shaft 3 of the chisel. 1 is provided with a clamping element 6, can be inserted into the chisel holder 4 and can be displaced over the length of the guide 7 due to the ring-like guide 7.
  • the lower end of the chisel holder 4 is closed with the aid of a plug 5.
  • the stopper 5 ending in a screw head 14 is screwed into the lower end of the bit holder 4 with the aid of a thread 15.
  • the water required for cooling is fed under line pressure of, for example, 10 bar via the channel 10 provided in the chisel holder 4 as well as an annular channel 11 and a supply channel 12 to the cavity 9, which is supplied between the plug 5 and the cavity 9, which between the plug 5 and the lower end 8 of the chisel shaft 3 is provided.
  • a check valve 13 is provided in the feed channel 12.
  • a water channel 16 is provided centrally, which ends with a nozzle 17 within the sleeve-like cutting edge 2.
  • a pressure relief valve 18 is connected upstream of the water channel 16.
  • the operation of the chisel 1 shown in the exemplary embodiment according to FIG. 1 is as follows: Low-pressure water is pressed into the cavity 9 through the channel 10 in the chisel holder 4 and the channels 11, 12 within the stopper 5. If the chisel 1 is not in engagement with the mineral, the water pressure acts on the shaft end 8 and displaces the chisel 1 in the axial direction until the clamping element 6 strikes the upper end of the guide 7. During this time, the pressure relief valve 18 remains closed. When the chisel 1 or the cutting edge 2 is in engagement with a mineral, the chisel 1 is pressed against the water in the cavity 8.
  • the water is pressurized in the space 9 and flows through the pressure relief valve 18 into the channel 16 and the nozzle 17 at high speed onto the surfaces to be cooled.
  • a small part of the water biased in this way is pressed out over the annular gap formed between the chisel shaft 3 and the chisel holder 4, so that the high-pressure water exerts a flushing, lubricating and additionally damping effect.
  • the exemplary embodiment shown in FIG. 2 takes into account the shape of another chisel 1 which is equipped with a conventional cutting edge 2. Since no central water channel 16 is provided, the water required for cooling is led to the nozzle 17 via at least one water channel 16 provided in the bit holder 4. Here too, in order to ensure water atomization only when the chisel 1 engages with a mineral and at the same time to achieve a damping effect for the chisel 1, the water is sprayed off via a pressure relief valve 18.
  • FIG. 3 a further variant of a chisel 1 mounted in a chisel holder 4 is shown, the cutting edge 2 of which is tubular in connection with the shaft 3.
  • the annular channel 19 provided between the chisel holder 4 and the shaft 3 is used for atomizing the prestressed water, the opening at the end of the chisel holder 4 being shaped as a natural nozzle 17 which surrounds the chisel 1 High pressure water splashed.
  • any chisel shapes can be used, it being regarded as a prerequisite for damping that a damping space with a corresponding water supply is present below the end of the shaft, and that if the chisel engages in the mineral, a possibility is created of spraying the water which has been prestressed in this way via appropriate channels and nozzles to be fitted inside or above the chisel in the area of the chisel holder.

Landscapes

  • 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)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Turning (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling Tools (AREA)
  • Dowels (AREA)

Claims (6)

1. Pic à tige ronde (1) et porte-outil (4), en particulier pour des machines à attaque ponctuelle pour creusement de galeries et de tunnels comprenant : une tige amovible (3) logée dans le porte-outil, libre autour de son axe longitudinale, un outil d'attaque (2) en carbure fritté rapporté au bout libre de la tige, et donc, en dehors du porte-outil (4) ; la tige, via un dispositif de blocage (6) et une douille de guidage (7) étant libre d'un mouvement axial limité dans le porte-outil (4), le bout de la tige (8) pouvant être déplacé dans un alésage constituant une chambre, le tout étant caractérisé par
un alésage communiquant d'un côté avec une arrivée de fluide (10) et de l'autre côté par un conduit (16) vers des gicleurs d'arrosage (17), ce conduit (16) étant obturable par une soupape (18)
la chambre (9) se trouvant en dessous de l'extrémité de la tige (8)
l'arrivée de fluide (10) étant obturable par une soupape non-retour (13)
le conduit (16) ayant un clapet (18) faisant fonction de soupape de sécurité de façon que le pic (1) dans le porte-outil (1) est amorti de manière hydraulique et que son recul provoque dans la chambre une mise sous pression de l'eau, celle-ci, servant d'eau de refroidissement.
2. Pic à tige ronde selon revendication No. 1, caractérisé par la chambre (9) dans le porte-outil (4) fermée par un bouchon (5).
3. Pic à tige ronde selon revendication No. 2, caractérisé par le bouchon (5) pourvu d'un conduit annulaire (11) correspondant avec l'arrivée (10) et une autre adduction (12) pourvue d'une soupape non-retour (13).
4. Pic à tige ronde selon revendication No. 2, caractérisé par le bouchon (5), la partie inférieure du porte-outil (4) recevant ledit bouchon (5) étant pourvue des pas filetés correspondants.
5. Pic à tige ronde selon la revendication No. 1, caractérisé par le gicleur (17) se trouvant au milieu de l'outil d'attaque (2) ayant la forme d'une douille, et par la soupape (18) à l'extrémité de l'arrivée (16) se trouvant au centre de la tige (3) donnant sur la chambre (9).
6. Pic à tige ronde selon revendication No. 1, caractérisé par la mise rapportée en carbure fritté (2) faisant saillie de la tige (3) sous forme d'une douille et par le jeu (19) entre la tige (3) et le porte-outil (4) servant d'adduction d'eau et d'ouverture d'arrosage.
EP83110850A 1982-11-13 1983-10-29 Trépan à queue cylindrique à guidage amorti Expired EP0111143B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110850T ATE36033T1 (de) 1982-11-13 1983-10-29 Gedaempft gefuehrter rundschaftmeissel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3242137A DE3242137C2 (de) 1982-11-13 1982-11-13 Gedämpft geführter Rundschaftmeißel
DE3242137 1982-11-13

Publications (3)

Publication Number Publication Date
EP0111143A2 EP0111143A2 (fr) 1984-06-20
EP0111143A3 EP0111143A3 (en) 1985-11-21
EP0111143B1 true EP0111143B1 (fr) 1988-07-27

Family

ID=6178132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110850A Expired EP0111143B1 (fr) 1982-11-13 1983-10-29 Trépan à queue cylindrique à guidage amorti

Country Status (6)

Country Link
US (1) US4537448A (fr)
EP (1) EP0111143B1 (fr)
JP (1) JPS59158895A (fr)
AT (1) ATE36033T1 (fr)
DE (1) DE3242137C2 (fr)
ZA (1) ZA838407B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9874291B2 (en) 2014-02-07 2018-01-23 Sandvik Intellectual Property Ab Fluid control valve

Families Citing this family (32)

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Publication number Priority date Publication date Assignee Title
DE3341322C2 (de) 1983-11-15 1986-04-10 Ruhrkohle Ag, 4300 Essen Halterung für Rundschaftmeißel
DE3512990C1 (de) * 1985-04-11 1986-02-27 Krampe & Co Fertigung in Bergbaubedarf GmbH, Zweigniederlassung Pelkum, 4700 Hamm Meißel mit einem ihn zu einer Sprühdose durchsetzenden Zufuhrkanal für Sprühflüssigkeit
DE3521560A1 (de) * 1985-06-15 1986-05-28 Fried. Krupp Gmbh, 4300 Essen Bagger und verfahren zu dessen betrieb
GB8602419D0 (en) * 1986-01-31 1986-03-05 Anderson Stathclyde Plc Cutting tool & holder
US7527638B2 (en) * 2003-12-16 2009-05-05 Depuy Spine, Inc. Methods and devices for minimally invasive spinal fixation element placement
US7666188B2 (en) * 2003-12-16 2010-02-23 Depuy Spine, Inc. Methods and devices for spinal fixation element placement
US7234782B2 (en) * 2005-02-18 2007-06-26 Sandvik Intellectual Property Ab Tool holder block and sleeve retained therein by interference fit
WO2006099654A1 (fr) * 2005-03-24 2006-09-28 Brenton Nigel Lawrence Article d'affichage de materiel promotionnel
US8007051B2 (en) * 2006-08-11 2011-08-30 Schlumberger Technology Corporation Shank assembly
US7871133B2 (en) * 2006-08-11 2011-01-18 Schlumberger Technology Corporation Locking fixture
US9145742B2 (en) 2006-08-11 2015-09-29 Schlumberger Technology Corporation Pointed working ends on a drill bit
US7387345B2 (en) * 2006-08-11 2008-06-17 Hall David R Lubricating drum
US8033616B2 (en) 2006-08-11 2011-10-11 Schlumberger Technology Corporation Braze thickness control
US8414085B2 (en) * 2006-08-11 2013-04-09 Schlumberger Technology Corporation Shank assembly with a tensioned element
US7997661B2 (en) 2006-08-11 2011-08-16 Schlumberger Technology Corporation Tapered bore in a pick
US9051795B2 (en) 2006-08-11 2015-06-09 Schlumberger Technology Corporation Downhole drill bit
US7669674B2 (en) * 2006-08-11 2010-03-02 Hall David R Degradation assembly
US20090058174A1 (en) * 2006-08-11 2009-03-05 Hall David R Attack Tool
US8292372B2 (en) 2007-12-21 2012-10-23 Hall David R Retention for holder shank
US7469971B2 (en) * 2006-08-11 2008-12-30 Hall David R Lubricated pick
US7722127B2 (en) * 2006-08-11 2010-05-25 Schlumberger Technology Corporation Pick shank in axial tension
US7992945B2 (en) * 2006-08-11 2011-08-09 Schlumberger Technology Corporation Hollow pick shank
US7637574B2 (en) 2006-08-11 2009-12-29 Hall David R Pick assembly
US8449040B2 (en) 2006-08-11 2013-05-28 David R. Hall Shank for an attack tool
US8201892B2 (en) 2006-08-11 2012-06-19 Hall David R Holder assembly
US7918857B2 (en) 2006-09-26 2011-04-05 Depuy Spine, Inc. Minimally invasive bone anchor extensions
US8960337B2 (en) 2006-10-26 2015-02-24 Schlumberger Technology Corporation High impact resistant tool with an apex width between a first and second transitions
US7926883B2 (en) 2007-05-15 2011-04-19 Schlumberger Technology Corporation Spring loaded pick
US7883154B2 (en) * 2008-08-28 2011-02-08 Kennametal Inc. Cutting tool with water injection to the cutting bit shank
US8322796B2 (en) 2009-04-16 2012-12-04 Schlumberger Technology Corporation Seal with contact element for pick shield
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
CN104100265B (zh) * 2013-04-12 2016-05-18 刘素华 防损坏驱动部件装置

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GB1309005A (en) * 1970-07-24 1973-03-07 Coal Industry Patents Ltd Rotary cutters for mineral mining machines
GB1481198A (en) * 1974-11-01 1977-07-27 Dresser Europe Sa Mining machine
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
SU685821A1 (ru) * 1978-06-29 1979-09-15 Копейский Ордена Трудового Красного Знамени Машиностроительный Завод Им. С.М.Кирова Режуща коронка горного комбайна
AT358510B (de) * 1978-10-19 1980-09-10 Voest Ag Einrichtung zum kuehlen der meissel des schraemwerkzeuges einer schraemmaschine und der ortsbrust
DE2854307A1 (de) * 1978-12-15 1980-07-03 Kennametal Inc Halter zur anbringung von meisseln, insbesondere von rundschaftmeisseln an bergbaulichen gewinnungs- und streckenvortriebsmaschinen
DE2932511A1 (de) * 1979-08-10 1981-02-26 Eickhoff Geb Meissel, insbesondere fuer schraemwalzen
US4302053A (en) * 1980-02-23 1981-11-24 The United States Of America As Represented By The Secretary Of The Interior Mounting block to rotate coal cutter bits
DE3021821C2 (de) * 1980-06-11 1983-01-13 Gebr. Eickhoff, Maschinenfabrik U. Eisengiesserei Mbh, 4630 Bochum Schrämmeißel für bergbauliche Gewinnungs- und Streckenvortriebsmaschinen
DE3102884C2 (de) * 1981-01-29 1983-06-16 Mannesmann AG, 4000 Düsseldorf Schrämmeißel mit Wasserbedüsung
AT369859B (de) * 1981-03-12 1983-02-10 Voest Alpine Ag Einrichtung zum kuehlen der meissel einer schraemmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9874291B2 (en) 2014-02-07 2018-01-23 Sandvik Intellectual Property Ab Fluid control valve

Also Published As

Publication number Publication date
EP0111143A2 (fr) 1984-06-20
US4537448A (en) 1985-08-27
JPS59158895A (ja) 1984-09-08
DE3242137C2 (de) 1985-06-05
DE3242137A1 (de) 1984-05-17
ATE36033T1 (de) 1988-08-15
EP0111143A3 (en) 1985-11-21
ZA838407B (en) 1984-07-25

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