EP1869286B1 - Bague en plastique pour la fixation amovible d'un burin a tige ronde dans une douille de burin - Google Patents

Bague en plastique pour la fixation amovible d'un burin a tige ronde dans une douille de burin Download PDF

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Publication number
EP1869286B1
EP1869286B1 EP06721190A EP06721190A EP1869286B1 EP 1869286 B1 EP1869286 B1 EP 1869286B1 EP 06721190 A EP06721190 A EP 06721190A EP 06721190 A EP06721190 A EP 06721190A EP 1869286 B1 EP1869286 B1 EP 1869286B1
Authority
EP
European Patent Office
Prior art keywords
plastic ring
section
tool
cross
chisel
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.)
Not-in-force
Application number
EP06721190A
Other languages
German (de)
English (en)
Other versions
EP1869286A1 (fr
EP1869286B2 (fr
Inventor
Robert Exel
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.)
Exel Robert
Sattler Erich
Original Assignee
Sattler Erich
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36581480&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1869286(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sattler Erich filed Critical Sattler Erich
Priority to AT06721190T priority Critical patent/ATE411448T1/de
Publication of EP1869286A1 publication Critical patent/EP1869286A1/fr
Publication of EP1869286B1 publication Critical patent/EP1869286B1/fr
Application granted granted Critical
Publication of EP1869286B2 publication Critical patent/EP1869286B2/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21C35/19—Means for fixing picks or holders
    • E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements

Definitions

  • the invention relates to a plastic ring for releasably securing a round shank chisel in a chisel, wherein the inside of the chisel has an annular groove, in which engages the received in an annular groove of the chisel shank resilient plastic ring, wherein the plastic ring is formed slotted and at least one on the outer surface of the Plastic ring projecting and extending over at least part of the circumference of the plastic ring rib has.
  • Round shank bits are detachably fastened to clamping heads or clamping rollers so that they can be replaced after wear and tear with as little work as possible.
  • easy solubility is the requirement of a good stop of the round shank bits on the Schremmköpfen or Schremmwalzen, especially since they are exposed to relatively high centrifugal forces and shear forces.
  • Another requirement for attaching a round shank bit to a chisel is to be non-sensitive to harsh operating conditions exacerbated by fine particles and coolant, etc. These operating conditions should also not make it difficult to loosen a round shank chisel from his chisel.
  • a plastic ring for releasably securing a round shank chisel in a chisel of the type described above is known from WO 01/23708 and from the AT 004 193 U1 known.
  • the insertion of the round shank bit into the bit bush is achieved by the depth of the ring groove of the bit shaft exceeding the total thickness of the plastic ring in the region of its rib and the slot having such a width that the diameter of the plastic ring can be reduced in diameter such that that the plastic ring does not look beyond the diameter of the chisel shank in the area of the annular groove when inserting the round shank chisel in the chisel.
  • the plastic ring Only when the round shank chisel has reached the correct seat in the chisel, the plastic ring springs on and the rib of the plastic ring engages at least partially in the provided on the inner surface of the chisel ring groove.
  • the holding force is given by the springing of the plastic ring of an outer diameter smaller than or equal to the outer diameter of the round shank chisel to a diameter exceeding this outer diameter.
  • the invention has as its object to provide a plastic ring of the type described above, with a simple insertion of a round shank chisel in the chisel and also a simple removal is possible, however, a sufficiently tight fit of the round shank chisel is given during operation in the chisel. So the task is to fulfill two completely contradictory requirements.
  • the cross section of the plastic ring has a radially inwardly compressible and outwardly resilient portion which extends at least over part of the circumference of the plastic ring, which portion relative to the other portions of the cross section of the Kunststoffiinges From a relaxed starting position with a certain outer diameter larger than the inner diameter of the chisel in a smaller outer diameter corresponding to the inner diameter of the Meiselbüchse, mounting position can be pressed and spring back into the relaxed starting position, either the total thickness of the relaxed plastic ring the depth of Ring groove of the drill collar exceeds or the slot has a width which is dimensioned such that in a reduction of the diameter of the plastic ring to the contact of the side walls of the slot of the radially resilient Ab section of the cross section of the plastic ring protrudes beyond the outer diameter of the drill collar when inserted into the annular groove plastic ring.
  • the basic idea of the invention thus lies in the fact that the penetration of the plastic ring, ie of its rib extending over at least part of the circumference, into the groove of the chisel bush is not effected by a radial springing of the entire plastic ring, but by the fact that the rib itself is resilient is and springs radially over the outer circumference of the plastic ring.
  • This can be done in principle in two ways. On the one hand that the total thickness of the plastic ring is thicker than the depth of the annular groove of the drill collar, or in that the plastic ring, even if its slot is compressed, at least with its rib still protruding beyond the outer diameter of the drill collar.
  • the cross-section of the plastic ring is wave-shaped, wherein a radially outwardly projecting wave crest forms the radially inwardly compressible and outwardly resilient portion of the cross section of the plastic ring.
  • a further preferred embodiment is characterized in that the plastic ring - which has an approximately cylindrical outer surface - is provided with a radially over the outer surface projecting rib which forms the radially inwardly movable and outwardly resilient portion of the cross section of the plastic ring, wherein expediently the rib is inclined at an angle to the axis of the plastic ring, preferably at an angle between 35 ° and 75 °.
  • the radially inwardly compressible and outwardly resilient portion extends only over a portion of the circumference of the plastic ring, preferably over at least 80% of the circumference.
  • the plastic ring is expediently formed from one of the following materials: polyamide (PA), polyacetal (POM), thermoplastic polyesters (PET), HT polymers (PEEK, PSU), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) ,
  • the plastic ring is characterized in that it is formed with a fiber reinforcement, such as a glass fiber reinforcement.
  • Fig. 1 a cross section through a plastic ring
  • Fig. 2 a top view
  • Fig. 3 illustrate a skew of the plastic ring according to a first embodiment.
  • Fig. 4 the plastic ring is shown in the installed state.
  • Fig. 5 again represents a cross section of the plastic ring
  • Fig. 6 a plan view of the same according to a second embodiment.
  • Fig. 7 again illustrates the plastic ring in the installed state.
  • a round shank chisel 1 has a circumferential on the chisel shank 2 annular groove 3, which has a certain depth 4 and a certain width 5.
  • a chisel 6 in which the round shank chisel 1 is inserted, also provided on the inside with an annular groove 7, which, however, has only a smaller width 8 than the annular groove 3.
  • a plastic ring 9 is provided, which according to the in the Fig. 1 to 4 illustrated embodiment has a wave-shaped cross-section.
  • this plastic ring 9 Approximately in the middle of the width 10 of this plastic ring 9 protrudes a section 11 - hereinafter also referred to as rib 11 - with its outer diameter 12 on the outer diameter 13 of the two ends of the plastic ring 9 before.
  • the plastic ring 9 is how out Fig. 2 can be seen, provided with a slot 14. Its largest thickness 15 projects beyond the depth 4 of the annular groove 3 of the round shank chisel 1, when the plastic ring 9 is in a relaxed position, as shown in the figures, so that it projects beyond the inner diameter 6 'of the chisel.
  • the plastic ring 9 has a radially outwardly projecting from an approximately cylindrical annular base body 16 of the plastic ring 9 and obliquely directed towards one end of the plastic ring 9 rib 17 whose wall thickness 18 is kept slightly lower than the wall thickness 19 of the cylindrical base body sixteenth Also, this plastic ring 9 is slotted, in order to postpone it on the round shank chisel 1 can. How out Fig. 7 can be seen, the ring-cylindrical base body 16 abuts against the groove bottom of the annular groove 3 of the round shank chisel 1, and it protrudes the rib 17 in the relaxed state in the annular groove 7 of the chisel. 6
  • the thickness 19 of the ring-cylindrical base body 16 of the plastic ring 9 is dimensioned such that upon insertion of the round shank chisel 1 in the chisel 6 compression of the protruding rib 17 to the base body 16 is possible and in this compressed state, the depth 4 of Ring groove 3 of the round shank chisel 1 is not exceeded by the plastic ring 9.
  • This spring-loaded state of the rib 17 is in Fig. 7 illustrated with dashed lines.
  • the plastic ring 9 is preferably formed from the following materials: polyamide (PA), polyacetal (POM), thermoplastic polyester (PET), hat polymers (PEEK, PSU), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), optionally with or without fiber reinforcement, in particular glass fiber reinforcement.
  • the slot 14 may extend in the axial direction of the plastic ring 9 or even below 45 ° thereto.
  • the width 20 of the slot 14 is between 1 and 8 mm, preferably 4 mm.

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)
  • Harvester Elements (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Pens And Brushes (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Stringed Musical Instruments (AREA)
  • Food-Manufacturing Devices (AREA)

Claims (8)

  1. Bague en matière plastique (9) pour la fixation amovible d'un burin à tige ronde (1) dans une douille de burin (6), dans laquelle la face intérieure de la douille de burin (6) présente une gorge annulaire (7) dans laquelle s'engage la bague en matière plastique (9) à effet ressort reçue dans une gorge annulaire (3) de la tige de burin (2), ladite bague en matière plastique (9) étant réalisée fendue et présentant au moins une nervure qui fait saillie au-delà de la surface extérieure de la bague en matière plastique (9) et qui s'étend sur une partie au moins de la périphérie de la bague en matière plastique (9), caractérisée en ce que la section de la bague en matière plastique (9) comporte un tronçon (11, 17) susceptible d'être enfoncé vers l'intérieur en direction radiale et à effet ressort vers l'extérieur, qui s'étend sur au moins une partie de la périphérie de la bague en matière plastique (9), ce tronçon (11, 17) étant, par rapport aux autres tronçons de la section transversale de la bague en matière plastique (9), à partir d'une position de départ détendue avec un diamètre extérieur déterminé (12), plus grand que le diamètre intérieur (6') du manchon de burin (6) et pouvant être enfoncé jusque dans une position de montage qui présente un diamètre extérieur plus petit, correspondant au diamètre intérieur (6') du manchon de burin (6) et capable de revenir avec effet élastique jusque dans la position de départ détendue, et dans laquelle soit l'épaisseur totale (15) de la bague en matière plastique détendue (9) dépasse la profondeur (4) de la gorge annulaire (3) de la tige de burin (2), soit la fente (14) présente une largeur (20) dimensionnée de telle façon que lors d'une réduction du diamètre de la bague en matière plastique (9) jusqu'à venue en contact des parois latérales de la fente (14), le tronçon (11, 17), à effet ressort en sens radial, de la section transversale de la bague en matière plastique (9) dépasse au-delà du diamètre extérieur de la tige de burin (2) lorsque la bague en matière plastique (9) est en place dans la gorge annulaire (3).
  2. Bague en matière plastique (9) selon la revendication 1, caractérisée en ce que sa section transversale est conçue sous forme ondulée, dans laquelle un sommet d'ondulation dépassant radialement vers l'extérieur forme le tronçon (11), de la section transversale de la bague en matière plastique (9), présentant un effet ressort vers l'intérieur et vers l'extérieur en direction radiale.
  3. Bague en matière plastique (9) selon la revendication 1 ou 2, caractérisée en ce qu'elle est pourvue d'une nervure (17) en saillie radiale, qui forme le tronçon, de la section transversale de la bague en matière plastique (9), susceptible d'être enfoncé vers l'intérieur en direction radiale et présentant un effet ressort vers l'extérieur.
  4. Bague en matière plastique (9) selon la revendication 3, caractérisée en ce que la nervure (17) est réalisée avec une inclinaison oblique par rapport à l'axe de la bague en matière plastique (9), de préférence sous un angle entre 35 et 75°.
  5. Bague en matière plastique (9) selon l'une des revendications 1 à 4, caractérisée en ce que le tronçon (11, 17) susceptible d'être enfoncé vers l'intérieur en direction radiale et présentant un effet ressort vers l'extérieur s'étend seulement sur une partie de la périphérie de la bague en matière plastique (9), de préférence sur au moins 80 % de la périphérie.
  6. Bague en matière plastique (9) selon l'une des revendications 1 à 5, caractérisée en ce que l'épaisseur de sa paroi (14) est comprise entre 0,7 et 3 mm, de préférence entre 1,3 et 1,8 mm, et dans le cas de la réalisation d'une nervure (17) dressée radialement vers l'extérieur, celle-ci présente une paroi (18) d'épaisseur réduite par rapport au reste de la section transversale de la bague en matière plastique.
  7. Bague en matière plastique (9) selon l'une des revendications 1 à 6, caractérisée en ce qu'elle est formée de l'un des matériaux suivants : polyamide (PA), polyacétal (POM), polyester thermoplastique (PET), polymère HT (PEEK, PSU), polyéthylène (PE), polypropylène (PP), chlorure de polyvinyle (PVC).
  8. Bague en matière plastique (9) selon l'une des revendications 1 à 7, caractérisée en ce qu'elle est réalisée avec un renfort en fibres, par exemple un renfort en fibres de verre.
EP06721190.4A 2005-04-14 2006-03-31 Bague en plastique pour la fixation amovible d'un burin a tige ronde dans une douille de burin Not-in-force EP1869286B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT06721190T ATE411448T1 (de) 2005-04-14 2006-03-31 Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0063205A AT501635B1 (de) 2005-04-14 2005-04-14 Kunststoffring zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse
PCT/AT2006/000130 WO2006108200A1 (fr) 2005-04-14 2006-03-31 Bague en plastique pour la fixation amovible d'un burin a tige ronde dans une douille de burin

Publications (3)

Publication Number Publication Date
EP1869286A1 EP1869286A1 (fr) 2007-12-26
EP1869286B1 true EP1869286B1 (fr) 2008-10-15
EP1869286B2 EP1869286B2 (fr) 2014-03-05

Family

ID=36581480

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06721190.4A Not-in-force EP1869286B2 (fr) 2005-04-14 2006-03-31 Bague en plastique pour la fixation amovible d'un burin a tige ronde dans une douille de burin

Country Status (7)

Country Link
US (1) US20080308981A1 (fr)
EP (1) EP1869286B2 (fr)
AT (2) AT501635B1 (fr)
AU (1) AU2006235185B8 (fr)
DE (1) DE502006001838D1 (fr)
WO (1) WO2006108200A1 (fr)
ZA (1) ZA200708678B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130169022A1 (en) * 2011-12-28 2013-07-04 Sandvik Intellectual Property Ab Radial and conical tools with compression band retainer
US9890636B2 (en) * 2013-05-20 2018-02-13 Schlumberger Technology Corporation Axially stable retention mechanism for picks and cutting elements
US9422812B2 (en) 2014-10-14 2016-08-23 Kennametal Inc. Cutting tool mounting assembly with elastomeric coated bushing
US9702251B2 (en) * 2015-03-17 2017-07-11 Kennametal Inc. Cutting tool assembly including retainer sleeve with retention member
EP3812598B1 (fr) * 2019-10-25 2021-09-22 Balluff GmbH Élément d'identification d'un outil à arbre

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1036535A (en) † 1964-05-20 1966-07-20 Hall & Pickles Ltd Improvements in or relating to coal cutter picks and boxes
US3767266A (en) * 1970-08-10 1973-10-23 Cincinnati Mine Machinery Co Resilient retaining means for connecting work tools and work tool holders
US4346934A (en) * 1977-06-29 1982-08-31 Kennametal Inc. Excavating bit
US4327947A (en) * 1980-06-17 1982-05-04 General Electric Company Keeper spring for connecting mining tool to work tool holder
US4484783A (en) * 1982-07-22 1984-11-27 Fansteel Inc. Retainer and wear sleeve for rotating mining bits
US4575156A (en) * 1984-03-13 1986-03-11 Fansteel Inc. Mining block and bit
AUPM494494A0 (en) * 1994-04-08 1994-05-05 Cutincoal Pty Limited Integrated drilling and rock bolting apparatus
US5503463A (en) * 1994-12-23 1996-04-02 Rogers Tool Works, Inc. Retainer scheme for cutting tool
US5628549A (en) * 1995-12-13 1997-05-13 Kennametal Inc. Cutting tool sleeve rotation limitation system
DE29716692U1 (de) * 1997-08-22 1997-12-18 Fa. Michael Komotzki, 44319 Dortmund Meißel zum Abbau mineralischer Stoffe
US6092960A (en) * 1998-10-27 2000-07-25 Mccallion; James P. Concrete joint restraint system
AT4193U1 (de) * 1999-09-28 2001-03-26 Tamrock Voest Alpine Bergtech Einrichtung zum lösbaren festlegen eines rundschaftmeissels in einer meisselbüchse
WO2001023708A1 (fr) * 1999-09-28 2001-04-05 Voest-Alpine Bergtechnik Gesellschaft M.B.H. Dispositif pour fixer de maniere liberable un outil a tige cylindrique dans une douille d'outil
US6702393B2 (en) * 2001-05-23 2004-03-09 Sandvik Rock Tools, Inc. Rotatable cutting bit and retainer sleeve therefor

Also Published As

Publication number Publication date
EP1869286A1 (fr) 2007-12-26
AU2006235185B2 (en) 2010-12-16
DE502006001838D1 (de) 2008-11-27
AT501635B1 (de) 2007-07-15
AU2006235185A1 (en) 2006-10-19
AU2006235185B8 (en) 2011-03-10
AT501635A1 (de) 2006-10-15
ZA200708678B (en) 2008-10-29
WO2006108200A1 (fr) 2006-10-19
EP1869286B2 (fr) 2014-03-05
US20080308981A1 (en) 2008-12-18
WO2006108200A8 (fr) 2008-01-03
ATE411448T1 (de) 2008-10-15

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