EP1869286A1 - 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

Info

Publication number
EP1869286A1
EP1869286A1 EP06721190A EP06721190A EP1869286A1 EP 1869286 A1 EP1869286 A1 EP 1869286A1 EP 06721190 A EP06721190 A EP 06721190A EP 06721190 A EP06721190 A EP 06721190A EP 1869286 A1 EP1869286 A1 EP 1869286A1
Authority
EP
European Patent Office
Prior art keywords
plastic ring
chisel
section
cross
annular groove
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
EP06721190A
Other languages
German (de)
English (en)
Other versions
EP1869286B1 (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.)
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=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1869286(A1) "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

Links

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

  • Plastic ring for releasably securing a round shank chisel in a chisel
  • 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 chisel on the Schremmköpfen or Schremmwalzen, especially since they are exposed to relatively high centrifugal forces and shear forces.
  • Another requirement for attaching a pick shank to a chisel is to be insensitive 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 AT 004 193 Ul. According to this document, the insertion of the round shank chisel in the chisel by the fact that the depth of the annular groove of the chisel shank exceeds the total thickness of the plastic ring in the region of its rib and the slot has a width such that the plastic ring for mounting in the diameter is so reduced that When inserting the round shank chisel into the chisel bush, the plastic ring does not look beyond the diameter of the chisel shank in the area of the annular groove.
  • the holding force is given by the Auffedem of the plastic ring of an outer diameter smaller than or equal to the outer diameter of the round shank chisel on a diameter exceeding this outer diameter. It has been shown that in harsh Schremsm agree the so-called Garkraß: often insufficient. It comes as a result of centrifugal forces 2x1 involuntary removal of a round shank chisel from the chisel, which is favored by inclined walls of the rib and the corresponding purpose designed annular groove.
  • 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 plastic ring 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 bushing does not take place 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.
  • 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 illustrating a cross section through a plastic ring
  • FIG. 2 a top view
  • FIG. 3 a perspective view of the plastic ring according to a first embodiment. 4
  • the plastic ring is shown in the installed state.
  • Fig. 5 again shows a cross-section of the plastic ring
  • Fig. 6 is a plan view of the same according to a second Ausfschreibungsform.
  • Fig. 7 illustrates in turn the plastic ring in the installed state.
  • a Rundschaf ⁇ tm dealtel 1 has a circumferential on the drill collar 2 annular groove 3, which has a certain depth 4 and a certain width 5.
  • this annular groove 3 In the amount of this annular groove 3 is 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 has according to the embodiment shown in FIGS. 1 to 4 has a wave-shaped cross-section. Approximately in the middle of the width 10 of this plastic ring 9 protrudes a portion 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, as can be seen from Fig. 2, 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 is as the wall thickness 19 of the cylindrical base body 16. Also, this plastic ring 9 is slotted, in order to postpone it on the round shank chisel 1 can. As can be seen from Fig. 7, the ring-cylindrical base body 16 is located on 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 the annular 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 illustrated in Fig. 7 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)

Abstract

Bague en plastique (9) pour la fixation amovible d'un burin (1) à tige ronde dans une douille (6) de burin dont la face interne possède une rainure annulaire (7) dans laquelle est introduite la bague en plastique (9) à effet de ressort reçue dans une rainure annulaire (3) de la tige (2) de burin. Ladite bague en plastique est fendue et possède au moins une nervure faisant saillie par rapport à la surface externe de la bague en plastique (9) et s'étendant sur au moins une partie de la périphérie de la bague en plastique (9). Pour obtenir une bonne retenue du burin (1) à tige ronde, la section transversale de la bague en plastique (9) possède un segment (11) à effet de ressort vers l'extérieur et pouvant être comprimé vers l'intérieur dans le sens radial, qui s'étend sur au moins une partie de la périphérie de la bague en plastique (9). Ce segment (11) peut être comprimé par rapport aux autres segments de la section transversale de la bague en plastique (9), à partir d'une position de départ relâchée dans laquelle il possède un diamètre externe déterminé (12) plus grand que le diamètre interne (6') de la douille (6) de burin, dans une position de montage dans laquelle il présente un diamètre externe plus petit correspondant au diamètre interne (6') de la douille (6) de burin, et peut revenir par effet de ressort dans la position de départ relâchée. L'épaisseur totale (15) de la bague en plastique (9) relâchée est supérieure à la profondeur (4) de la rainure annulaire (3) de la tige (2) de burin.
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 true EP1869286A1 (fr) 2007-12-26
EP1869286B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006108200A1 *

Also Published As

Publication number Publication date
AU2006235185B2 (en) 2010-12-16
EP1869286B1 (fr) 2008-10-15
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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