EP2060375B1 - Procédé de remplacement de burins - Google Patents

Procédé de remplacement de burins Download PDF

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Publication number
EP2060375B1
EP2060375B1 EP09003594.0A EP09003594A EP2060375B1 EP 2060375 B1 EP2060375 B1 EP 2060375B1 EP 09003594 A EP09003594 A EP 09003594A EP 2060375 B1 EP2060375 B1 EP 2060375B1
Authority
EP
European Patent Office
Prior art keywords
bit
cutting roller
tool change
bits
change device
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
EP09003594.0A
Other languages
German (de)
English (en)
Other versions
EP2060375A1 (fr
Inventor
Bernd Holl
Günter HÄHN
Martin Lenz
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.)
Wirtgen GmbH
Original Assignee
Wirtgen GmbH
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 Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP2060375A1 publication Critical patent/EP2060375A1/fr
Application granted granted Critical
Publication of EP2060375B1 publication Critical patent/EP2060375B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • 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
    • 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
    • E21C35/188—Mining picks; Holders therefor characterised by adaptations to use an extraction tool

Definitions

  • the invention relates to a method for Ausweckeln the bit of a construction machine for processing ground surfaces, with a milling drum, on the surface of a plurality of chisel holders are arranged, wherein in a bit holder of the chisel holder a chisel, in particular a round shank chisel, is interchangeable, wherein the milling drum a tool changing device is assigned, and wherein the tool changing device disassembled or the bit of the bit holder.
  • a trained as a road milling machine construction machine is from the DE 39 03 482 A1 known.
  • road milling machines road surfaces can be milled off.
  • the chisels wear out continuously. If the chisels have reached a certain state of wear, they must be replaced. For this purpose, it is necessary that a worker goes into the area of the milling drum and drives out the chisels from the chisel holders there. When removing the chisel, the worker uses a special Austreibdornes and a hammer. This can lead to injuries.
  • the tool changing device introduces at least one dynamic pulse into the milling drum, a part of the milling drum, the bit holder or a group of bit holders and that the momentum introduces an expelling force into the bit due to the inertia of the bit.
  • an exchange tool which automatically dismantles the worn chisel.
  • the manual labor required to change the bits can be significantly reduced.
  • the fact that the change process is at least partially automated, this can also be done faster, so that fewer machine downtime arise.
  • the health hazard and the physical strain on the operator are reduced.
  • the tool changing device introduces at least one dynamic pulse into the milling drum, a part of the milling drum, the bit holder or a group of chisel holders. Accordingly, a pulse is generated by the tool changing device, which introduces an expelling force into the bit due to the inertia of the bit.
  • the pulse can be built up, for example, by a vibration generated in the milling drum.
  • one or more vibration devices are provided.
  • An alternative variant of the invention is that a pulse shaper is used on the milling drum.
  • the milling drum is assigned a stop which is provided with a pointing into the working movement means stop surface, and that a pulse shaper applies a counter to the working movement direction force acting on the stop surface.
  • the pulse shaper may be a mallet, which acts with its weight on this stop surface.
  • the tool changing device has at least one tool changer, which can be assigned to the individual bit holders or groups of bit holders by means of an actuating unit. It is also conceivable that all chisels or chisel holders together is assigned a single tool changer. This then dismantles the chisel at the same time.
  • each tool holder is associated with a respective tool changer of the tool changing device and that the tool changer is firmly connected to the bit holder.
  • the tool changers can be connected to each other via a common control. By means of this control, for example, a machine operator can change individual chisels, groups of chisels or all chisels at the same time.
  • the design of the tool changing device may be such that the bit is positioned to the tool changer.
  • the positioning of the bit can be done for example with an adjustment that positions the milling drum to the tool changer.
  • the milling drum is coupled via a drive train to a drive motor of the construction machine
  • the adjusting device has an auxiliary drive which can be coupled to the drive train, which rotates the milling drum in the raised state by a predetermined or selectable angle of rotation in which the torque of the auxiliary drive is higher than the moment of inertia of the milling drum and of the part of the drive train which is moved along with the milling drum when the drive motor is switched off or decoupled.
  • the setting unit and / or the adjusting device has a position measuring system and that the setting unit and / or the adjusting device is equipped with a numerical control.
  • the tool design can be such that the actuator positioned the at least one tool changer relative to the milling drum. In this case, the tool changer and the milling drum are then brought into position to each other.
  • tool changer are fixed on the machine side.
  • the bits are then assigned to them as a result of a rotation of the milling drum.
  • the tool change can be further automated if it is provided that the tool changing device conveys the dismantled bit directly or via a conveyor into a container or that the tool changing device is associated with a separating device, and that the singulator feeds bits from a storage unit of the tool changing device.
  • the milling drum is associated with a detection device, which continuously, at intervals or on default, the state of wear of the chisel or a portion of the chisel or a single bit, and that the detection device initiates or signals a tool change upon reaching a predetermined state of wear.
  • the wear detection can be designed, for example, such that at least one signal acquisition unit of the recognition device is assigned to at least one machine component directly or indirectly involved in the work process, that the signal acquisition unit detects an operating state of the machine component, and that the signal acquisition unit determines the state of wear via a signal processing arrangement ,
  • Fig. 1 is a rotary body of a road milling machine, namely a milling drum 10 is shown.
  • base parts or directly chisel holders 23 can be arranged at a systematic spacing from each other.
  • the base parts or the bit holder 23 are connected to the roller surface 11, preferably welded. If base parts are used, they have a plug-in receptacle. In turn, an insertion projection of a chisel holder 23 can be inserted into the plug-in receptacle.
  • the bit holder 23 has a bit receptacle 24, which is formed here as a bore. In the bore, a bit 30, in this case a round shank bit, are used.
  • the bit 30 has a chisel head 31 to which a chisel tip 32 made of cemented carbide or a ceramic material is attached at the front.
  • a shaft connects, on which a clamping sleeve is mounted.
  • the clamping sleeve is not axially displaceable, but rotatably connected in the circumferential direction with the shaft.
  • the chisel head 31 lies with the interposition of a wear protection disc on a mating surface of the chisel holder.
  • the milling drum 10 is associated with a tool changing device.
  • the tool changing device has a tool changer 40, which is accommodated in the interior of the milling drum 10.
  • the milling drum 10 has integrally formed bit holder 23. Of course, any differently shaped bit holder 23 may be used here.
  • the tool changer 40 has two articulated arms 47, 49, which are interconnected by means of a rotary joint 48.
  • the articulated arm 47 is fixed in place by a rotary joint 46.
  • a pulse shaper 50 is arranged in the form of a weight.
  • the milling drum 10 carries on its inner periphery a stop 51 with a stop surface 52. On the side facing away from the stop surface 52, the stop 51 has a deflection bevel 53rd
  • the tool changer 40 is in the Fig. 2 shown position held. If a chisel change is pending, he will be in the Fig. 1 shown position offset. Then the milling drum 10 is rotated in the circumferential direction until the pulse shaper 50 strikes the stop surface 52 of the stop 51. As a result, a pulse is generated, which counteracts the disassembly direction of the bit 30 acts. Due to this pulse, a force is introduced into the bit 30 which pushes it out of the bit receptacles 24.
  • the pulse shaper 50 After the pulse shaper 50 has impacted on the stop surface 52, it is deflected on the stop 51 and brought over the deflection bevel 53 back into its extended starting position.
  • the process for impulse can be repeated as needed.
  • the tool changer 40 is returned to the in Fig. 2 brought back position.
  • the pulse shaper can be rotated.
  • the milling drum 10 can be rotated via an auxiliary drive of an adjusting device.
  • the auxiliary drive can be used when the milling drum 10 is lifted off the ground. Then it can be adjusted for tool change by means of the auxiliary drive.
  • the auxiliary drive is also assigned a control unit. This rotates the milling drum 10 according to a predetermined program sequence, so that the chisel 30 or a part of the chisel 30 can be successively aligned with the tool changer 40.

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)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Road Repair (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Soil Working Implements (AREA)

Claims (10)

  1. Procédé de changement d'un burin d'un engin de chantier pour le traitement de surfaces de sols, avec un tambour de fraisage (10), sur la surface duquel se trouve une pluralité de supports de burins (23), un burin (30) étant logé de manière amovible dans un logement de burin (24) du support de burin (23), le tambour de fraisage étant muni d'un dispositif de changement d'outil et le dispositif de changement d'outil démontant le burin (30) du support de burin (23),
    caractérisé en ce que
    le dispositif de changement d'outil introduit au moins une impulsion dynamique dans le tambour de fraisage (10), une partie du tambour de fraisage (10), le support de burin (23) et un groupe de supports de burins (23), en ce que l'impulsion exerce une force d'extraction sur le burin (30) du fait de l'inertie de masse du burin (30), l'impulsion dynamique étant générée au moyen d'un dispositif de vibrations ou le tambour de fraisage (10) étant muni d'au moins une butée (51), qui présente une surface de butée (52) orientée dans la direction de déplacement de travail et
    un générateur d'impulsions (50) génère l'impulsion dynamique grâce à une force agissant à l'encontre de la direction de déplacement de travail sur la surface de butée (52).
  2. Procédé selon la revendication 1, caractérisé en ce que le dispositif de changement d'outil est un dispositif d'outil mécanique.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le dispositif de changement d'outil est disposé à l'intérieur du tambour de fraisage (10).
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que le dispositif de changement d'outil est disposé à l'extérieur du tambour de fraisage (10).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que le générateur d'impulsions (50) est un fléau qui agit sur la surface de butée (52) avec un poids.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le tambour de fraisage (10) est couplé avec un moteur d'entraînement de l'engin de chantier par l'intermédiaire d'une chaîne cinématique,
    l'unité de réglage comprenant un entraînement auxiliaire, qui peut être couplé avec la chaîne cinématique, qui fait tourner le tambour de fraisage (10) dans l'état soulevé, le moment de rotation de l'entraînement auxiliaire étant supérieur au moment d'inertie du tambour de fraisage (10) et de la partie de la chaîne cinématique qui est déplacée avec le tambour de fraisage (10) lorsque le moteur d'entraînement est arrêté ou découplé.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que le dispositif de changement d'outil transporte les burins (30) démontés, directement ou par l'intermédiaire d'un dispositif de convoyage, vers un récipient.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif de changement d'outil est équipé d'un dispositif de coupe et en ce que le dispositif de coupe transporte des burins (30) à partir d'une unité de réserve du dispositif de changement d'outil.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que le tambour de fraisage (10) est équipé d'un dispositif de détection qui contrôle, de manière continue, par intervalles ou sur demande, l'état d'usure des burins (30) ou une partie des burins (30) ou d'un seul burin (30) et en ce que le dispositif de détection initie ou signale un changement d'outil lorsqu'un état d'usure prédéterminé est atteint.
  10. Procédé selon la revendication 9, caractérisé en ce qu'au moins une unité d'enregistrement de signaux du dispositif de détection est monté dans au moins un composant de l'engin participant directement ou indirectement au processus de travail, en ce que l'unité d'enregistrement de signaux détermine un état de fonctionnement du composant de l'engin et en ce que l'unité d'enregistrement de signaux détermine l'état d'usure par l'intermédiaire d'un dispositif de traitement de signaux.
EP09003594.0A 2003-07-14 2004-04-15 Procédé de remplacement de burins Expired - Lifetime EP2060375B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10331970A DE10331970B4 (de) 2003-07-14 2003-07-14 Baumaschine
EP04727518.5A EP1646484B1 (fr) 2003-07-14 2004-04-15 Machine de chantier

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP04727518.5A Division-Into EP1646484B1 (fr) 2003-07-14 2004-04-15 Machine de chantier
EP04727518.5A Division EP1646484B1 (fr) 2003-07-14 2004-04-15 Machine de chantier

Publications (2)

Publication Number Publication Date
EP2060375A1 EP2060375A1 (fr) 2009-05-20
EP2060375B1 true EP2060375B1 (fr) 2016-05-18

Family

ID=34041873

Family Applications (3)

Application Number Title Priority Date Filing Date
EP15150872.8A Expired - Lifetime EP2915642B1 (fr) 2003-07-14 2004-04-15 Engin de construction
EP09003594.0A Expired - Lifetime EP2060375B1 (fr) 2003-07-14 2004-04-15 Procédé de remplacement de burins
EP04727518.5A Expired - Lifetime EP1646484B1 (fr) 2003-07-14 2004-04-15 Machine de chantier

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP15150872.8A Expired - Lifetime EP2915642B1 (fr) 2003-07-14 2004-04-15 Engin de construction

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04727518.5A Expired - Lifetime EP1646484B1 (fr) 2003-07-14 2004-04-15 Machine de chantier

Country Status (9)

Country Link
US (1) US7401862B2 (fr)
EP (3) EP2915642B1 (fr)
JP (1) JP4714146B2 (fr)
CN (1) CN1816432B (fr)
AU (1) AU2004255307B2 (fr)
BR (1) BRPI0412551B1 (fr)
DE (1) DE10331970B4 (fr)
RU (1) RU2332538C2 (fr)
WO (1) WO2005005119A1 (fr)

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AT406503B (de) 1995-12-21 2000-06-26 Voest Alpine Bergtechnik Meisselanordnung für einen rundschaftmeissel
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AU2004255307A1 (en) 2005-01-20
US7401862B2 (en) 2008-07-22
EP1646484A1 (fr) 2006-04-19
EP2915642A1 (fr) 2015-09-09
WO2005005119A1 (fr) 2005-01-20
EP1646484B1 (fr) 2016-03-23
EP2060375A1 (fr) 2009-05-20
RU2006104563A (ru) 2006-08-27
CN1816432A (zh) 2006-08-09
JP2007533875A (ja) 2007-11-22
DE10331970B4 (de) 2008-01-31
AU2004255307B2 (en) 2009-08-20
US20070132304A1 (en) 2007-06-14
EP2915642B1 (fr) 2017-06-28
CN1816432B (zh) 2010-10-27
BRPI0412551B1 (pt) 2015-09-08
RU2332538C2 (ru) 2008-08-27
BRPI0412551A (pt) 2006-09-19
DE10331970A1 (de) 2005-02-10
JP4714146B2 (ja) 2011-06-29

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