EP0809748A1 - Porte-outil pour haveuses - Google Patents

Porte-outil pour haveuses

Info

Publication number
EP0809748A1
EP0809748A1 EP96901764A EP96901764A EP0809748A1 EP 0809748 A1 EP0809748 A1 EP 0809748A1 EP 96901764 A EP96901764 A EP 96901764A EP 96901764 A EP96901764 A EP 96901764A EP 0809748 A1 EP0809748 A1 EP 0809748A1
Authority
EP
European Patent Office
Prior art keywords
chisel
tool
fuse
groove
legs
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
EP96901764A
Other languages
German (de)
English (en)
Other versions
EP0809748B1 (fr
Inventor
Karl Kammerer
Helmut Widmaier
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.)
Betek GmbH and Co KG
Original Assignee
Betek Bergbau und Hartmetalltechnik Karl Heinz Simon GmbH and Co KG DE
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 Betek Bergbau und Hartmetalltechnik Karl Heinz Simon GmbH and Co KG DE filed Critical Betek Bergbau und Hartmetalltechnik Karl Heinz Simon GmbH and Co KG DE
Publication of EP0809748A1 publication Critical patent/EP0809748A1/fr
Application granted granted Critical
Publication of EP0809748B1 publication Critical patent/EP0809748B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

  • the invention relates to a chisel holder with a chisel receptacle designed as a bore, into which a shaft of a chisel is inserted, the shaft being provided with a groove into which a fuse can be inserted and the fuse being supported indirectly or directly against the chisel holder.
  • Chisel holders of this type are used, for example, in cutting machines for removing rock or in road milling machines.
  • the chisel holders are placed on a roller body.
  • the chisels carried by the chisel holder come into contact with the material to be removed when the roller body rotates. After a certain period of use, the chisels are worn out and must be replaced with new chisels. To do this, the fuse must be removed from the groove.
  • Such a fuse is known for example from US 3,957,307, the fuse is designed as a spring element that in the groove snapped. To remove the spring element, it can be knocked out of the groove with the aid of a screwdriver and a hammer. The fuse jumps out in an uncontrolled manner and is often lost, so that a new fuse must be inserted. There is also a high risk of injury when the fuse is removed.
  • the object of the invention is achieved in that the fuse has at least one tool holder into which at least one active element of a tool can be inserted, and in that the active elements are supported in a form-fitting manner in the tool holder.
  • the active element of the tool is inserted into a correspondingly designed tool holder of the fuse.
  • the active element can be a pin, for example, which is inserted into a bore in the fuse.
  • the fuse can then be pulled out of its groove in a controlled manner using the tool.
  • the fuses are advantageously designed so that the fuses have a receptacle for the groove, which is accessible via a slot. The fuse can then be pushed onto the shaft of the chisel and into the groove via this slot to be snapped. The tool holder is then arranged on the side facing away from the slot, so that the fuse can simply be removed.
  • the active elements are designed as approaches that can be used in the tool holders, and that the tool holders on the side facing away from the bit holder are open in the axial direction of the shaft of the bit.
  • the fact that the tool holders are open to the chisel holder means that the tool is easily accessible. The approaches of the tool can then simply be guided into the tool holders.
  • bevels are connected to the tool holders and that the insertion movement of the active element of the tool into the tool holder can be limited by means of a stop, then a safe and quick attachment of the tool to the fuse is always possible.
  • the bevels serve as guides over which the active elements slide into the tool holders. When inserted into the tool holders, the active elements are defined in a defined manner using the stops.
  • a preferred embodiment of the invention provides that the fuse is plate-shaped, a head part and an adjoining one Transition part has that two legs extend from the transition part in the direction facing away from the head part, that the legs are spaced apart from one another, and that a bolt receptacle is formed between the legs, the dimensions of which are matched to the groove of the shank of the chisel.
  • a fuse designed in this way can be punched out of sheet metal and is therefore inexpensive to produce.
  • the legs extending from the transition part expand when the fuse is pushed onto the shaft and snap back elastically when passing the groove, so that the groove of the shaft is securely fixed in the bolt receptacle.
  • the bolt receptacle is expanded by means of a knockout, which is excluded from the transition part between the connection points of the legs, and that the extent of the knockout transverse to the central longitudinal axis of the chisel is chosen to be smaller than the diameter of the shaft of the chisel in the bottom of the groove.
  • the legs are provided on the mutually facing sides in the region of their free ends with beveled side surfaces, the side surfaces forming a groove that tapers in the direction of the bolt receptacles. and that the clear distance of the groove at the free end of the legs is larger and in the area facing the bolt receptacle is smaller than the diameter of the groove of the shank of the chisel in the groove base.
  • the head part or the transition part has at least one working point made of ferromagnetic material, which works together with a magnet of the tool, then the handling is made considerably easier.
  • the fuse can be attached to the magnet of the tool once and thereby held in position. The user can then manipulate the tool as desired without losing the backup.
  • the fuse is provided with a pressure surface on which a counter element of a press-in tool bears in a form-fitting manner, then a simple mounting of the fuse on the shaft of the chisel is possible.
  • the tool for pulling out the fuse from the groove is advantageously combined with the insertion tool to form a unit.
  • FIG. 1 is a front view of a fuse
  • Fig. 2 shows the fuse of FIG. 1 in side view
  • Fig. 3 shows another embodiment of the fuse in a front view.
  • 1 shows a fuse 10 which is punched out of a plate-shaped material.
  • This fuse has a head part 1 1, to which a transition part 1 1.1 is connected.
  • Two legs 12.1, 12.2 extend downward from the transition part 1.1.
  • the legs 12.1, 12.2 are arranged at a distance from one another.
  • the legs 12.1, 12.2 are cut out in a part-circle shape and thus form a pin receptacle 16.
  • the pin receptacle 16 has a diameter D.
  • the diameter D is matched to the diameter of a groove which is made in a shank of a chisel.
  • a downwardly open groove 17.1 is connected to the pin receptacle 16.
  • the groove is widened by means of side surfaces 17.
  • the fuse 10 can thus be pushed onto a shaft of a chisel.
  • the fuse 10 is first placed on the shaft and then pressed into the groove.
  • the fuse 10 has on its head part 11 a pressure surface 19, via which a force of a tool can be introduced.
  • the legs 12.1, 12.2 are spread outwards via the side surfaces 17. After the shank of the chisel has passed the side surfaces 17, the base of the groove slides past edges 16.1 of the pin receptacle 16.
  • the shaft abuts in its groove base on further edges 16.2 of the bolt receptacle 16, so that the insertion movement is limited.
  • the legs 12.1, 12.2 spring back elastically, so that the bolt receptacle 16 encompasses the shaft at its groove.
  • the groove 1 7.1 turned away from the transition part 1 1 .1 between the application points of the legs 12.1, 12.2, a breakout 15 is excluded.
  • the knockout 15 prevents notch stresses from occurring which would result in material cracks and thus failure of the fuse 10 if the legs 12.1, 12.2 were frequently spread.
  • tool holders 13 are introduced into the fuse 10.
  • the tool holders 13 are designed as cutouts which are laterally excluded from the transition part 1 1 .1.
  • the breakouts are limited by a stop 18 and a bevel 14.
  • the stop 18 limits the tool holder 13 to the head part.
  • the bevel 14 is arranged at an angle to the flat stop 18.
  • the tool holders 13 serve to hold active elements of a tool.
  • the insertion of the active elements which are designed, for example, as approaches, is made easier by means of the bevels 14. Accordingly, the active elements slide over the bevels 14 until they arrive at their determination position on the stops 18.
  • a force can now be introduced into the active elements via the tool, so that they are positively supported on the stops 18.
  • the fuse is preferably made of a steel with elastic properties. However, it is also possible to form a fuse 10 made of plastic, the plastic having corresponding properties with regard to temperature resistance and strength. In any case, it is advantageous if the fuse 10 has active points 20 which have ferromagnetic properties. These points of action can then be connected to magnets of the tool. The fuse 10 can then simply be attached to the magnet of the tool and held.
  • FIG. 2 shows the fuse 10 according to FIG. 1 in a side view. As can be seen from this illustration, the fuse 10 is formed from a plate-shaped material with the same thickness throughout.
  • FIG 3 shows a further embodiment of the fuse 10, in which the cutout 15 is designed as a more oval recess 15J '. It has been shown that the risk of breakage of the leg is reduced further under heavy use.
  • stops 18 ' run obliquely downward, so that active elements of a tool find a secure fit when the fuse 10 is removed.

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)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Fuses (AREA)

Abstract

L'invention concerne un porte-outil comportant un logement d'outil se présentant sous forme d'un orifice dans lequel est introduit la tige d'un outil. Cette tige est pourvue d'une rainure dans laquelle peut être introduite un dispositif de sécurité (10) reposant contre le porte-outil. L'invention vise à permettre de contrôler le retrait du dispositif de sécurité (10) de la tige de l'outil. A cet effet, le dispositif de sécurité comprend au moins un logement d'outil (13) dans lequel peut être introduit au moins un élément fonctionnel d'un outil. De plus, les éléments fonctionnels sont maintenus par liaison de forme dans le logement d'outil (13).
EP96901764A 1995-02-16 1996-01-25 Porte-outil pour haveuses Expired - Lifetime EP0809748B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19505143 1995-02-16
DE19505143A DE19505143C2 (de) 1995-02-16 1995-02-16 Meißelhalter
PCT/EP1996/000298 WO1996025586A1 (fr) 1995-02-16 1996-01-25 Porte-outil pour haveuses

Publications (2)

Publication Number Publication Date
EP0809748A1 true EP0809748A1 (fr) 1997-12-03
EP0809748B1 EP0809748B1 (fr) 1998-09-02

Family

ID=7754084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96901764A Expired - Lifetime EP0809748B1 (fr) 1995-02-16 1996-01-25 Porte-outil pour haveuses

Country Status (4)

Country Link
EP (1) EP0809748B1 (fr)
DE (2) DE19505143C2 (fr)
ES (1) ES2121473T3 (fr)
WO (1) WO1996025586A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6428110B1 (en) * 2000-08-16 2002-08-06 Kennametal Inc. Cutting tool retainer

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US895842A (en) * 1906-09-27 1908-08-11 Cyrus Chambers Jr Cotter.
US3554605A (en) * 1967-12-20 1971-01-12 Elders G W Bit and block assembly
US3690728A (en) * 1970-09-08 1972-09-12 Cincinnati Mine Machinery Co Resilient retaining means for joining work tools and work tool holders
US3957307A (en) * 1974-09-18 1976-05-18 Olind Varda Rough cutter mining tool
DE2757510A1 (de) * 1977-12-22 1979-06-28 Wallram Hartmetall Gmbh Verwendung eines teilringes aus thermoplastischem kunststoff als anschlagring
AT354385B (de) * 1978-06-15 1980-01-10 Voest Ag Meisselanordnung fuer ein schraemwerkzeug
US4632463A (en) * 1984-08-03 1986-12-30 The Cincinnati Mine Machinery Company Combined base member and bit holder with protected retainer
DE8516248U1 (de) * 1985-06-04 1985-08-01 Sandvik GmbH, 4000 Düsseldorf Halterung für Schrämmeißel
US4763956A (en) * 1987-01-16 1988-08-16 Fansteel Inc. Mining tool retainer
US4952001A (en) * 1989-05-31 1990-08-28 Fansteel Inc. Mining bit preload retainer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9625586A1 *

Also Published As

Publication number Publication date
DE19505143A1 (de) 1996-08-22
ES2121473T3 (es) 1998-11-16
EP0809748B1 (fr) 1998-09-02
WO1996025586A1 (fr) 1996-08-22
DE19505143C2 (de) 1998-01-08
DE59600512D1 (de) 1998-10-08

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