EP0284593B1 - Schrämarm - Google Patents

Schrämarm Download PDF

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Publication number
EP0284593B1
EP0284593B1 EP88870050A EP88870050A EP0284593B1 EP 0284593 B1 EP0284593 B1 EP 0284593B1 EP 88870050 A EP88870050 A EP 88870050A EP 88870050 A EP88870050 A EP 88870050A EP 0284593 B1 EP0284593 B1 EP 0284593B1
Authority
EP
European Patent Office
Prior art keywords
kerving
belt
notched belt
arm
intended
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 - Lifetime
Application number
EP88870050A
Other languages
English (en)
French (fr)
Other versions
EP0284593A1 (de
Inventor
Charles Pierre Hallez
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.)
Diamant Boart NV SA
Original Assignee
Diamant Boart NV SA
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 Diamant Boart NV SA filed Critical Diamant Boart NV SA
Priority to AT88870050T priority Critical patent/ATE70890T1/de
Publication of EP0284593A1 publication Critical patent/EP0284593A1/de
Application granted granted Critical
Publication of EP0284593B1 publication Critical patent/EP0284593B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/22—Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
    • E21C25/28—Chains or chain guides
    • E21C25/34—Chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/124—Saw chains; rod-like saw blades; saw cables

Definitions

  • the present invention relates to a lifting arm on which is stretched an endless element furnished externally with cutting tools intended to carry out the cutting and the felling of rocks and internally with guide shoes capable of following a groove formed along said arm. , the endless element being rotated by a drive wheel and a deflection wheel having at their periphery notches intended to receive the said guide pads.
  • the drive wheel and the return wheel have a solid core of uniform thickness and circumferential circumference provided with a rough coating.
  • German patent application DE-A 3128264 is a lifting arm of a coal cutting machine comprising an endless belt, of trapezoidal cross section, furnished externally with diamond cutting elements and internally with guide shoes.
  • the belt is rotated by a drive wheel and by a return wheel provided with a trapezoidal groove whose inclined walls enclose the sides of the belt.
  • the belt is provided on its outer face with slots on which are fixed by interlocking tool-holder elements fixed with pins engaged in transverse holes.
  • This configuration makes it possible to fully absorb the considerable shocks to which the tool heads are subjected, using the bearing surfaces provided for this purpose between the tool head and the tool body.
  • a lifting arm is known from BE-A-865189 on which is stretched an endless element driven in rotation by a driving wheel and a deflection wheel and externally equipped with cutting tools intended to carry out the cutting and the felling of rocks and internally guide shoes able to follow a groove formed along said arm.
  • the drive wheel has notches at its periphery in which the pads mesh.
  • the present invention aims to remedy the above drawbacks. It relates to a shearer comprising a shearer arm on which is stretched an endless element equipped externally with cutting tools intended to carry out the havage and the felling of rocks and internally with guide shoes able to follow a groove formed along said arm, the endless element being driven in rotation by a drive wheel and a return wheel having at their periphery, ridges separated by notches intended to receive the aforementioned guide pads.
  • the endless element bears on the ridges, so as to avoid any contact of the guide pads against the wheels (8, 9).
  • the endless element is a toothed belt.
  • the ridges separating the aforementioned notches from the drive and deflection wheels are furnished with teeth which mesh in the corresponding notches of the toothed belt, bearing thereon so as to avoid any contact of the guide pads against the wheels.
  • the upper face of the pad support has recesses intended to receive the crenellations of a toothed belt.
  • the lower part of the metal tool body carries an optionally removable sole made of synthetic material.
  • a lifting arm comprises a frame in one piece in the form of a welded construction.
  • the chassis consists essentially of a upper spar 1 and a lower spar 2 formed of beams forming a frame 3 covered on both sides by side plates 4 and 5 projecting from the spars 1, 2 so as to form an upper groove 6 whose width is equal to that of side rails 1, 2.
  • the groove 6 is supplied with water by injectors 7 formed at the bottom thereof.
  • One end of the lifting arm carries a drive wheel 8, the other a return wheel 9. On these wheels is stretched an endless element consisting for example of a toothed belt 10.
  • This belt 10 is externally equipped with elements carrying cutting tools 11 intended for carrying out the cutting and felling of rocks and internally of guide shoes 12 able to follow the groove 6 formed along the side members 1, 2 of the lifting arm.
  • the drive wheel 8 and the return wheel 9 each comprise a solid core 13 of uniform thickness, mounted by screws 14 on a plate 15.
  • the core is sandwiched between two flanges 16.
  • the plate 15 is mechanically connected to a output shaft 17 of an electric motor not shown, mounted on the frame of the lifting arm.
  • the core 13 of the drive wheel 8 and of the deflection wheel 9 have notches 18 separated from each other by ridges 19 furnished with teeth 20 which mesh in the notches 21 of the toothed belt 10.
  • the guide parts slide in the grooves of the side members and penetrate into the notches 18, so as to allow the toothed belt to bear on the ridges furnished with teeth 20.
  • the teeth mesh in the notches 21 of the toothed belt and force the latter to adhere to the drive wheel, excluding any slippage.
  • This arrangement has the advantage of transmitting the traction torque to the belt by means of all of the fibers adjacent to the main fibers of the toothed belt and not by means of the pads. This increases the life of the belt.
  • FIGS 2 to 4 show from various angles a tool holder element designated as a whole by the reference symbol 23, for lifting arm and cutting device implementing an endless element 10.
  • Each cutting tool 11 comprises a cutting element not shown brazed the tool member 23 having an inverted U-shaped section.
  • the branches 26 in inverted U have on the inner side, preferably at their end, tenons 27 or claws intended to grip the notches 21 of the toothed belt 10.
  • These claws 27 of the tool body 23 are folded in the sides lateral 28 of a shoe 12 disposed against the inner face of the endless element 10.
  • the upper face 29 of the shoe 12 has recesses 30 intended to receive the notches 21 of the toothed belt 10.
  • the pads 12 are fixed to the tool body 23, without altering or weakening the belt. They can optionally be fixed removably.
  • the lifting arm according to the invention can be used for the calibration of plates or blocks of hard mineral materials.
  • Calibration is a surfacing operation during which the above-mentioned arm, contained in a plane inclined by 45 ° relative to the surface to be calibrated, is moved parallel to itself along the surface, so as to sweep it this entirely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Food-Manufacturing Devices (AREA)
  • Lubricants (AREA)
  • Belt Conveyors (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Claims (5)

1. Schrämarm, auf welchem ein Endlos-Element (10) aufgespannt ist, welches auf seiner Außenseite zum Schrämen und Abbauen von Gestein bestimmte Schneidwerkzeuge (11) und auf seiner Innenseite Gleitschuhe (12) aufweist, die in der Lage sind, einer entlang dem Arm ausgebildeten Nut zu folgen, wobei das Endlos-Element (10) von einem Antriebszahnrad (8) und einem Rücklaufzahnrad (9) drehend angetrieben ist, welche an ihrem Umfang Stege (19) aufweisen, die durch zur Aufnahme der Gleitschuhe (12) bestimmte Ausnehmungen (18) getrennt sind, dadurch gekenzeichnet, daß das Endlos-Element (10) ein mit Zähnen (21) versehener Zahnriemen ist, und daß die Stege (19) mit Zähnen (20) versehen sind, in welche die Zähne des Zahnriemens sich an diesen abstützend eingreifen, ohne daß die Gleitschuhe (12) in Kontakt mit den Zahnrädern (8, 9) geraten, so daß das Zugmoment über die Gesamtheit der benachbarten Fasern der Hauptfasern und nicht über die Gleitschuhe (12) übertragen wird.
2. Schrämarm nach Anspruch 1, dadurch gekennzeichnet, daß die Schneidwerkzeuge (11) an einem Werkzeugkörper (23) angelötet sind, der auf der Außenseite des Zahnriemens (10) angebracht ist und den Zahnriemen (10) mit Haken (27) einspannt, die in die Seitenflanken eines an der Innenfläche (31) des Zahnriemens (10) angeordneten Gleitschuhträgers (30) gebogen sind.
3. Schrämarm nach Anspruch 2, dadurch gekennzeichnet, daß die Oberseite (31) des Gleitschuhträgers (30) zur Aufnahme der Zähne (21) des Zahnriemens (10) vorgesehene Ausnehmungen (33) aufweist.
4. Schrämarm nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der untere Teil des Gleitschuhträgers (12) eine gegebenenfalls entfernbare Sohle (16) aus Kunststoff aufweist.
5. Schrämarm nach Anspruch 4, dadurch gekennzeichnet, daß der Werkzeugkörper (23) und die Sohle (16) ein durch Kunststoffgießen geformtes einstückiges Teil bilden.
EP88870050A 1987-03-23 1988-03-22 Schrämarm Expired - Lifetime EP0284593B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88870050T ATE70890T1 (de) 1987-03-23 1988-03-22 Schraemarm.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700290 1987-03-23
BE8700290A BE1000418A4 (fr) 1987-03-23 1987-03-23 Bras haveur.

Publications (2)

Publication Number Publication Date
EP0284593A1 EP0284593A1 (de) 1988-09-28
EP0284593B1 true EP0284593B1 (de) 1991-12-27

Family

ID=3882581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88870050A Expired - Lifetime EP0284593B1 (de) 1987-03-23 1988-03-22 Schrämarm

Country Status (7)

Country Link
US (1) US4856719A (de)
EP (1) EP0284593B1 (de)
AT (1) ATE70890T1 (de)
BE (1) BE1000418A4 (de)
DE (1) DE3867101D1 (de)
ES (1) ES2029079T3 (de)
GR (1) GR3004132T3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9108725U1 (de) * 1991-07-16 1992-11-19 Maschinenfabrik Korfmann Gmbh, 5810 Witten Schrämarm für Schrämmaschinen zum Schneiden von Naturstein, Beton o.dgl.
DE9110796U1 (de) * 1991-07-16 1991-11-14 Maschinenfabrik Korfmann Gmbh, 5810 Witten Schrämarm für Schrämmaschinen zum Schneiden von Hartgestein
JP4357402B2 (ja) * 2004-10-18 2009-11-04 株式会社椿本チエイン 搬送装置
EP3060782B1 (de) * 2013-10-22 2019-04-03 United Technologies Corporation Flächendichtungsanordnung mit halteplatte

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2344750A (en) * 1942-11-27 1944-03-21 Goodman Mfg Co Cutter chain
US2354781A (en) * 1943-10-30 1944-08-01 Goodman Mfg Co Cutter chain and bit
US2664120A (en) * 1948-09-13 1953-12-29 C & H Dev Company Saw chain
US3604755A (en) * 1969-07-24 1971-09-14 Cincinnati Mine Machinery Co Cutter bar, cutter chain and sprocket assembly
BE865189A (fr) * 1978-03-22 1978-07-17 Madrigali Luigi Dispositif de havage de roche
DE2961849D1 (en) * 1979-02-22 1982-03-04 Honore Joseph Lambot Rock cutter jib
DE3128264A1 (de) * 1981-07-17 1983-02-03 Maschinenfabrik Korfmann Gmbh, 5810 Witten Schraemarm an einer schraemmaschine
AU8752782A (en) * 1981-08-24 1983-03-03 Cornelis Johannes Maria Beerens Chain saw bar and sprocket
DE3209391A1 (de) * 1982-03-15 1983-09-22 Maschinenfabrik Korfmann Gmbh, 5810 Witten Schneidewerkzeug fuer eine schraemkette oder einen schraemriemen

Also Published As

Publication number Publication date
GR3004132T3 (de) 1993-03-31
DE3867101D1 (de) 1992-02-06
EP0284593A1 (de) 1988-09-28
BE1000418A4 (fr) 1988-12-06
ES2029079T3 (es) 1992-07-16
US4856719A (en) 1989-08-15
ATE70890T1 (de) 1992-01-15

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