WO2003062587A1 - Support pour disques de coupe disposes en porte-a-faux - Google Patents

Support pour disques de coupe disposes en porte-a-faux Download PDF

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Publication number
WO2003062587A1
WO2003062587A1 PCT/AT2003/000023 AT0300023W WO03062587A1 WO 2003062587 A1 WO2003062587 A1 WO 2003062587A1 AT 0300023 W AT0300023 W AT 0300023W WO 03062587 A1 WO03062587 A1 WO 03062587A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
bearing
disks
rotation
section
Prior art date
Application number
PCT/AT2003/000023
Other languages
German (de)
English (en)
Inventor
Roman Gerer
Ralf Grief
Bernhard Ebner
Peter Kogler
Original Assignee
Voest-Alpine Bergtechnik Gesellschaft M.B.H.
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 Voest-Alpine Bergtechnik Gesellschaft M.B.H. filed Critical Voest-Alpine Bergtechnik Gesellschaft M.B.H.
Priority to DE10390198T priority Critical patent/DE10390198B4/de
Publication of WO2003062587A1 publication Critical patent/WO2003062587A1/fr

Links

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
    • E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
    • E21C25/18—Saws; Discs; Wheels
    • 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
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B28D1/188—Tools therefor, e.g. having exchangeable cutter bits with exchangeable cutter bits or cutter segments

Definitions

  • the invention relates to a carrier for a flying cutting disc bearing, which can be fixed to a rotatably mounted base body by means of a screw connection, in which the cutting discs are supported on the carrier with the interposition of tapered roller bearings, grooves being arranged on the circumference of the base body and the carrier relative to Rotation axis of the disks is angled or cranked and has a cross section corresponding to the cross section of the grooves at its end facing away from the disc bearing.
  • Cutting wheels are used, on the circumference of which rotatably mounted disks are fixed.
  • the cutting wheel consists of a basic rotating body that can accommodate several cutting disc units.
  • a flying cutting disc bearing has become known, for example, from US Pat. No. 3,749,188, in which the disc bearing has a bearing journal or carrier, which is fixed in a rectangular milling of the base body by means of a screw connection.
  • the high cutting reaction forces are absorbed by the screw connection via a corresponding lever arm, the screw bolts being subjected to high mechanical loads.
  • the bearing journals must be fitted into the cutout, as a result of which frictional forces arise at the edges of the bearing journals, which can result in a corresponding play when the bearing journals are subjected to high abrupt loads, which promotes wear.
  • the invention now aims to improve the fixing of the carrier to the base body, and thus the storage, for use with particularly hard rock, and at the same time to ensure that parts which are subject to high wear can be easily removed without losing their load-bearing capacity storage can be replaced.
  • the invention thus aims to ensure a high load-bearing capacity and a rigid attachment to the base body of the drilling tool, while at the same time a simple exchange of wearing parts should be made possible without loss of the load-bearing capacity of the bearing.
  • the carrier according to the invention in combination with the rotatably mounted base body essentially consists in that the grooves arranged on the circumference of the base body have a trapezoidal cross-section and the carrier has openings for receiving fastening screws running transversely to the parallel trapezoidal sides of this cross-section, and that on the longer of the carrier trapezoidal sides parallel to each other relative to the base body, a bore running in the axial direction of the axis of rotation of the disks for receiving a fastening bolt for the disk storage opens.
  • the design is particularly suitable for angled or cranked configurations of the carrier relative to the axis of rotation, the simple detachability and fixing of the carrier offering the possibility of using carriers with different cranking or different angles for the respective rock properties and in particular the respective hardness of the rock without that further modifications to the cutting tool would be required.
  • the particularly simple fixing of the rotatably mounted disks succeeds in this embodiment in that, in addition to the openings running transversely to the parallel trapezoidal sides of the cross section of the carrier, for receiving fastening screws for fixing the carrier on the base body, an axis essentially of the axis of rotation of the discs running bore is provided for receiving a fastening bolt for disc storage, this bore opening on the longer of the mutually parallel trapezoidal sides relative to the base body and in this way enables the disks to be fixed and the disks to be easily replaced without complete disassembly even when the carrier is mounted if such discs have become defective.
  • the design according to the invention is such that the carrier has cylindrical outer surfaces stepped coaxially with the axis of rotation for receiving the tapered roller bearings, the diameter of the The lateral surfaces gradually decrease towards the free end of the support.
  • the graduated design of the end of the carrier facing the disc bearing allows the tapered roller bearings for the disc bearing to be easily mounted, the inner bearings of the tapered roller bearings being pressed onto the respective cylindrical outer surfaces.
  • the design is advantageously made such that an annular spacer is arranged between tapered roller bearings which follow one another in the axial direction and the fastening bolt is designed as a screw bolt which can be screwed into the end plate, the simple assembly by tightening the fastening bolt , which extends essentially in the direction of the axis of rotation of the disks.
  • the design is advantageously made such that the end face at the free end of the carrier has recesses or projections into which projections or recesses of an end plate or nut having an internal thread engage securely against rotation, and that the end plate partially overlaps the external tapered roller bearing.
  • the anti-rotation lock of the end plate thus enables the fastening bolt to be screwed in easily, while at the same time a corresponding adjustment of the bearing play is made possible by the annular spacer arranged between the tapered roller bearings in the axial direction.
  • the carrier in its entirety can thus be removed by loosening the fastening screws extending transversely to the mutually parallel trapezoidal sides and replaced by another carrier, with a fixed carrier making it easy to change the disks by loosening the fastening bolt for the disc storage.
  • the carrier has a flange for a mechanical bearing protruding radially to the axis of rotation, to which a mechanical seal is connected, and that the mechanical seal extends from the inner wall or a with this connected annular component of the pot-shaped disks is overlapped.
  • Such a design allows the cup-shaped disks to be pulled off after the fastening bolt for the disk bearing has been loosened and the parts of the mechanical seal which may be subject to wear to be replaced in order to achieve optimum tightness, which on the one hand on the projecting flange for a mechanical ring bearing carrier and on the inner wall the pot-shaped disks can be set.
  • the design can also be such that the disk is preferably arranged on an annular disk support body separate from the bearing housing of the disk storage.
  • a disk support body separate from the bearing housing is provided, on which the disk is arranged, makes it easier to replace disks that have become defective since only the component that is subject to heavy wear can be replaced.
  • the bearing housing can remain at the installation location so that the entire bearing cannot be dismantled and reassembled.
  • the bearing housing carries a stop on which the disk support body is supported and fixed with the aid of a cover and / or ring, the bearing housing advantageously carrying a stop for supporting the cover and at least partially overlapping the cover and the disk support body Ring is provided, which can be screwed to the bearing housing to fix it.
  • a particularly advantageous embodiment is obtained if the angle of the support is chosen to be inclined between 5 and 30 ° to the axis of rotation of the disks, and because of the simple interchangeability, supports with different angles can be kept in stock and can be used for the corresponding area of application.
  • a particularly low wear of the base body can be ensured by the fact that the side surfaces of the trapezoidal cross-section of the end facing away from the disc mounting enclose an angle between 30 ° and 50 °, in particular 40 °, which, on the one hand, enables the carrier to be easily centered when it is attached to the base body and on the other hand an effective absorption of the reaction forces occurring is ensured.
  • FIG. 1 shows a schematic axial section through.
  • 2 shows a side view of the carrier for the cutting disc storage with the cutting disc attached
  • FIG. 3 shows a view in the direction of the arrow III in FIG. 2
  • FIG. 4 shows a section along the line IV-IV in FIG. 3
  • Figure 5 is a perspective view of the carrier with a disc attached
  • Figure 6 is a sectional view of Figure 4 by a modified design of the carrier.
  • the base body of the cutting wheel is designated 1, which is rotatably connected to an output shaft 2 is.
  • the base body 1 carries rotatably mounted disks 3, which are fixed to a support indicated schematically by 4, the support 4 being fixed to the base body 1 by means of the screws 5 and 6.
  • the carrier 4 shows the carrier 4 on an enlarged scale, and it can be seen that the axis of rotation 7 of the disks 3 is inclined at an angle ⁇ of approximately 5 to 10 ° relative to the axis 8 of the end 9 of the carrier facing away from the disc mounting.
  • the substantially trapezoidal cross-section of the end 9 facing away from the disc bearing can be seen accordingly, the axes of the fastening screws 5 and 6 being designated 10 and 11.
  • the corresponding bores in the end region 9 of the carrier 4 are indicated by dashed lines at 12 and 13.
  • the trapezoidal side surfaces 14 and 15 form an angle ⁇ of approximately 40 ° with one another.
  • the bores 12 and 13 are arranged essentially orthogonally to the mutually parallel side edges 16 and 17 of the trapezoidal cross section of the end 9 of the carrier 4 facing away from the bearing, via which the screw connection with the base body 1 takes place.
  • a bore 18 extending essentially in the axial direction of the axis of rotation 7 of the disks 3 is provided, which opens out on one of the two mutually parallel side surfaces of the trapezoidal cross section.
  • a clamping bolt 19 can be inserted into this bore, via which a cover plate 20 can be clamped against the bearing rings 21 and 22 with the interposition of a spacer plate 23.
  • an anti-rotation device is in the form of ⁇ pins, pins or the like , which are denoted by 24, before ⁇ seen in order to achieve an exact axial clamping force when screwing in the bolt 19 without applying frictional forces to the end faces of the bearing rings 21.
  • the tapered rollers of the tapered roller bearings are labeled 25 and 26.
  • the pot-shaped disks 3 have at their inner end on the inner wall a slide ring bearing carrier 27, whereas the stepped end of the carrier 4 carrying the tapered roller bearings has an outwardly supporting flange 28 for receiving a further slide ring bearing carrier 29.
  • a mechanical seal 30 extends between the two slide ring bearing supports 27 and 29, which can also be exchanged as separate components in the event of wear, via which the ingress of dust into the bearing is prevented.
  • the clamping device for the cutting disks which is essentially formed by the screw-in bolt 19, is likewise accessible from the outside in the case of supports fixed to the base body, and makes it possible to clamp the cutting disc with the tapered roller bearing.
  • the most favorable absorption of the forces via the tapered roller bearing can be achieved in that the inner bearing has larger tapered rollers than the outer bearing and is arranged on a larger diameter than the outer tapered roller bearing.
  • the spacer or spacer sleeve 23 arranged between the two tapered roller bearings is dimensioned in length to the exact bearing clamping force, with the assembly and removal being particularly easy in the same way.
  • FIG. 6 shows a modified embodiment of the carrier, in which the disk 3 is arranged on a component separate from the bearing housing 31, namely the annular disk support body 32.
  • the disk support body 32 is supported on a stop 33 of the bearing housing 31.
  • a preferably circular cover 34 is provided, which rests on the projection 35 of the bearing housing 31, the cover 34 and the disk support body 32 being connected to the bearing housing 31 by means of a ring 36 and the screws 37.
  • the tapered roller bearing containing the tapered rollers 25 can be inserted from the front with the cover plate 20 and cover 34 removed, the radially outer bearing ring coming to rest on a projection of the bearing housing 31. As a result, a construction is achieved which can absorb very large bearing forces, and in particular very large axial bearing forces.

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)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

Support (4) pour disques de coupe disposés en porte-à-faux qui peut être fixé par l'intermédiaire de vis à un corps de base (1) monté rotatif, et sur lequel (4) les disques de coupe (3) reposent par l'intermédiaire de roulements à rouleaux coniques. La périphérie du corps de base (1) possède des rainures à section transversale essentiellement trapézoïdale. Le support (4) est conçu de manière inclinée ou coudée par rapport à l'axe de rotation (7) des disques (3) et possède au niveau de son extrémité (9) opposée aux roulements pour le disque une section transversale correspondant à la section transversale trapézoïdale des rainures ainsi que des évidements (12, 13) à extension transversale par rapport aux faces parallèles (16, 17) du trapèze, destinés à recevoir des vis de fixation (5, 6). Un alésage (18) qui s'étend dans le sens de l'axe de rotation (7) des disques (3) et qui est destiné à recevoir une vis de fixation (19) pour le montage du disque débouche sur la face la plus longue (16), située sur l'extérieur par rapport au corps de base (1), des deux faces parallèles (16, 17) du trapèze.
PCT/AT2003/000023 2002-01-23 2003-01-23 Support pour disques de coupe disposes en porte-a-faux WO2003062587A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10390198T DE10390198B4 (de) 2002-01-23 2003-01-23 Träger für eine fliegende Schneiddiskenlagerung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA106/2002 2002-01-23
AT1062002A AT413047B (de) 2002-01-23 2002-01-23 Träger für eine fliegende schneiddiskenlagerung

Publications (1)

Publication Number Publication Date
WO2003062587A1 true WO2003062587A1 (fr) 2003-07-31

Family

ID=27587155

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2003/000023 WO2003062587A1 (fr) 2002-01-23 2003-01-23 Support pour disques de coupe disposes en porte-a-faux

Country Status (5)

Country Link
AT (1) AT413047B (fr)
DE (1) DE10390198B4 (fr)
PL (1) PL200829B1 (fr)
WO (1) WO2003062587A1 (fr)
ZA (1) ZA200405266B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10415384B2 (en) 2016-01-27 2019-09-17 Joy Global Underground Mining Llc Mining machine with multiple cutter heads
US10472961B2 (en) 2012-09-14 2019-11-12 Joy Global Underground Mining Llc Cutter head for mining machine
US10533416B2 (en) 2016-09-23 2020-01-14 Joy Global Underground Mining Llc Rock cutting device
US10738608B2 (en) 2016-08-19 2020-08-11 Joy Global Underground Mining Llc Cutting device and support for same
US10876400B2 (en) 2016-08-19 2020-12-29 Joy Global Underground Mining Llc Mining machine with articulating boom and independent material handling system
US11319754B2 (en) 2018-07-25 2022-05-03 Joy Global Underground Mining Llc Rock cutting assembly
US11391149B2 (en) 2016-08-19 2022-07-19 Joy Global Underground Mining Llc Mining machine with articulating boom and independent material handling system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620889A (en) * 1925-04-06 1927-03-15 William S Holdaway Disk bit
US3749188A (en) 1971-08-20 1973-07-31 G W Murphy Indu Inc Drill bit
US4359114A (en) * 1980-12-10 1982-11-16 Robbins Machine, Inc. Raise drill bit inboard cutter assembly
WO1997025514A1 (fr) 1996-01-13 1997-07-17 Andaray Engineering Limited Perfectionnements relatifs aux tunneliers
WO1998013573A1 (fr) 1996-09-26 1998-04-02 Atlas Copco Robbins Inc. Outils de coupe de roche rotatifs a axe incline munis d'anneaux de coupe faciles a remplacer
US6131676A (en) * 1997-10-06 2000-10-17 Excavation Engineering Associates, Inc. Small disc cutter, and drill bits, cutterheads, and tunnel boring machines employing such rolling disc cutters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620889A (en) * 1925-04-06 1927-03-15 William S Holdaway Disk bit
US3749188A (en) 1971-08-20 1973-07-31 G W Murphy Indu Inc Drill bit
US4359114A (en) * 1980-12-10 1982-11-16 Robbins Machine, Inc. Raise drill bit inboard cutter assembly
WO1997025514A1 (fr) 1996-01-13 1997-07-17 Andaray Engineering Limited Perfectionnements relatifs aux tunneliers
WO1998013573A1 (fr) 1996-09-26 1998-04-02 Atlas Copco Robbins Inc. Outils de coupe de roche rotatifs a axe incline munis d'anneaux de coupe faciles a remplacer
US6131676A (en) * 1997-10-06 2000-10-17 Excavation Engineering Associates, Inc. Small disc cutter, and drill bits, cutterheads, and tunnel boring machines employing such rolling disc cutters

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10472961B2 (en) 2012-09-14 2019-11-12 Joy Global Underground Mining Llc Cutter head for mining machine
US11371346B2 (en) 2012-09-14 2022-06-28 Joy Global Underground Mining Llc Cutter head for mining machine
US10876399B2 (en) 2016-01-27 2020-12-29 Joy Global Underground Mining Llc Mining machine with multiple cutter heads
US10415384B2 (en) 2016-01-27 2019-09-17 Joy Global Underground Mining Llc Mining machine with multiple cutter heads
US10876400B2 (en) 2016-08-19 2020-12-29 Joy Global Underground Mining Llc Mining machine with articulating boom and independent material handling system
US10738608B2 (en) 2016-08-19 2020-08-11 Joy Global Underground Mining Llc Cutting device and support for same
US11391149B2 (en) 2016-08-19 2022-07-19 Joy Global Underground Mining Llc Mining machine with articulating boom and independent material handling system
US11613993B2 (en) 2016-08-19 2023-03-28 Joy Global Underground Mining Llc Cutting device and support for same
US11939868B2 (en) 2016-08-19 2024-03-26 Joy Global Underground Mining Llc Cutting device and support for same
US10550693B2 (en) 2016-09-23 2020-02-04 Joy Global Underground Mining Llc Machine supporting rock cutting device
US11203930B2 (en) 2016-09-23 2021-12-21 Joy Global Underground Mining Llc Machine supporting rock cutting device
US10533416B2 (en) 2016-09-23 2020-01-14 Joy Global Underground Mining Llc Rock cutting device
US11846190B2 (en) 2016-09-23 2023-12-19 Joy Global Underground Mining Llc Rock cutting device
US11319754B2 (en) 2018-07-25 2022-05-03 Joy Global Underground Mining Llc Rock cutting assembly

Also Published As

Publication number Publication date
PL200829B1 (pl) 2009-02-27
AT413047B (de) 2005-10-15
ATA1062002A (de) 2005-03-15
ZA200405266B (en) 2005-07-08
DE10390198D2 (de) 2005-01-13
PL369624A1 (en) 2005-05-02
DE10390198B4 (de) 2008-12-11

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