EP2886719B1 - Fraiseuse routière - Google Patents

Fraiseuse routière Download PDF

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Publication number
EP2886719B1
EP2886719B1 EP14193195.6A EP14193195A EP2886719B1 EP 2886719 B1 EP2886719 B1 EP 2886719B1 EP 14193195 A EP14193195 A EP 14193195A EP 2886719 B1 EP2886719 B1 EP 2886719B1
Authority
EP
European Patent Office
Prior art keywords
milling machine
road milling
machine according
unit
signal
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
EP14193195.6A
Other languages
German (de)
English (en)
Other versions
EP2886719A1 (fr
Inventor
Bernd Holl
Kay Heemann
Günter Dr. Hähn
Axel Mahlberg
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
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Filing date
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Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP2886719A1 publication Critical patent/EP2886719A1/fr
Application granted granted Critical
Publication of EP2886719B1 publication Critical patent/EP2886719B1/fr
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups

Definitions

  • the invention relates to a road milling machine for processing floors or for removing traffic areas with a milling drum which is equipped with a large number of chisels.
  • Such road milling machines are for example off DE 100 07 253 A1 known. They have a milling drum that is equipped with a large number of chisels, in particular round shank chisels. While the machine is in use, the milling drum rotates and the chisels come into contact with the floor covering to be processed. The chisels are subject to continuous wear and tear and must be replaced after a certain operating time. However, the service life of the chisels is strongly dependent on the milling conditions. It often happens that the Machine operator replaces chisels either too early or too late. If they are changed too early, unnecessary tool costs arise. If the change is too late, the milling drum can be damaged.
  • Another problem with the milling process is early chisel failure. Due to external influences or tool errors, one or more chisels can break. There is then no more material removal at the point where the chisel was positioned. In addition, this also increases the load on neighboring tools. These then experience increased stress.
  • the object of the invention is achieved in that a detection device optically detects the milling image generated by the milling drum, at least in regions.
  • the optical detection device for example a camera
  • the quality of the milled image can be checked. Faults due to wear of the chisel or chisel breakage can be seen on the milling pattern.
  • the detection device has at least one odometer which determines the milling depth.
  • a machine component that is directly or indirectly involved in the work process or another machine component is assigned a signal recording unit the signal recording unit detects an operating state of the machine component, and that the signal recording unit is connected to a signal output device via a signal processing arrangement.
  • One (or, if applicable, several) machine parts can be monitored by means of the signal recording unit.
  • the operating state assumed by the machine part is used as a parameter or map.
  • the determined characteristic value can be compared with a reference variable or a reference variable field.
  • a machine operator can take the necessary corrective measures. For example, he can then change the tool.
  • the reference variable or the reference variable field can be a constant stored in the evaluation unit or one of many constants selected from a database of the evaluation unit on the basis of boundary conditions.
  • the reference variable / the reference variable field can advantageously also be variable over time.
  • the reference variable / the reference variable field can be determined empirically in the machine condition with unworn tools.
  • the reference variable / the reference variable field is defined recursively, that is, can be derived from the characteristic variable / the map of the operating state of the past.
  • the operating status of the monitored machine component can be recorded either continuously or at specified measuring intervals.
  • the measurement result evaluation is preferably carried out in such a way that the signal recorded by the signal recording unit is fed to an evaluation circuit, so that the evaluation circuit compares the recorded signal with a default value and forms a difference signal from the recorded signal and the default value. In this way, the largely automated error message can then be carried out.
  • the default value can be determined empirically by means of a detection circuit, and that the default value can be read into the evaluation circuit by means of the detection circuit. A machine operator can determine the default value in the milling process, for example when the chisels are not worn.
  • a conceivable variant of the invention is such that it has a machine chassis that is carried by a running gear, one or more drive motors being assigned to the running gear, and that the signal recording unit detects the power consumption of the drive motor.
  • the signal recording unit detects the power consumption of the drive motor.
  • the drive motors are designed as electric motors and the signal recording unit detects the supplied current or that the drive motors are designed as hydraulic motors and the signal recording unit detects the hydraulic pressure in the fluid circuit assigned to the drive motor.
  • Another variant of the invention can be characterized in that the machine chassis is at least partially supported by means of at least one adjusting device, that the height of the machine chassis is at least partially adjustable in height by means of the adjusting device, for which purpose a pressurized fluid is assigned to the adjusting device, and that the signal recording unit records the pressure in the fluid detected.
  • the forces occurring during the milling process are recorded indirectly. If chisels are not worn and easy to cut, the cutting forces are low. As the wear progresses, so do the cutting forces.
  • the vertical component of the cutting forces is directed against the force of gravity and thus relieves the load on the adjustment device, which otherwise would have to carry the entire machine weight.
  • the pressure in the fluid assigned to the adjustment device decreases proportionally to the vertical component of the cutting forces.
  • this value can also be determined by a force measurement, for example by means of a strain gauge, on at least one of the adjustment devices or on another component.
  • the signal recording unit detects the machine feed. This can then be compared with the current performance parameters of the road milling machine, in particular with the drive power required for the milling drum.
  • a combined calculation of the following values can also be carried out: vertical force direction (determined for example from the adjusting device), horizontal force direction (determined for example from the drive data).
  • vertical force direction determined for example from the adjusting device
  • horizontal force direction determined for example from the drive data.
  • the signal recording unit detects the vibration of the machine component.
  • This arrangement is based on the knowledge that different wear conditions also have an influence on the vibration behavior of individual machine components.
  • This configuration of a machine is based on the knowledge that a uniform vibration can be determined as a result of the uniform rotational movement of the milling drum. In the unworn state, this oscillation has fixed parameters (amplitude, period). As a result of a tool breakage, for example, the vibration experiences a sudden change towards an irregular vibration compared to the vibration before the breakage.
  • the parameters gradually change in their amplitude or in their amount.
  • the irregularity or regularity of the signal is of minor importance in this case or does not exist.
  • the vibration is detected by means of a displacement transducer, a speed sensor or an acceleration sensor.
  • signal recording unit detects the drive torque at one or more points of a drive arrangement driving the milling drum or that the signal recording unit determines the engine characteristics.
  • a preferred embodiment of the invention provides that the signal pickup unit has a pulse generator assigned to the milling drum.
  • the position of the milling drum can be determined by means of the pulse generator. If the signal detected by the signal pickup unit is processed with the information from the pulse generator, detailed conclusions can be drawn about the position of a damaged area, for example a broken chisel.
  • the side view of a road milling machine shows the basic structure and the components of the machine.
  • the machine is based on a machine frame 10, which is supported by two front running gears 11 and two rear running gears 12.
  • the chassis 11 and 12 can be set in motion by electric motors or hydraulic motors. These drives work synchronously. It is therefore sufficient to assign sensors S6 and S7 to only one chassis, e.g. 11, for recording the current or pressure and speed.
  • a milling box 13 is attached to the machine frame 10 between the front and rear chassis 11 and 12.
  • This milling box 13 accommodates at least one milling drum with bit holders and chisels.
  • the milling drum is driven by a drive unit 16, which has a diesel engine, a sensor S8 detecting the transmitted torque and a sensor S10 detecting other operating data such as engine speed, exhaust gas temperature, boost pressure and the like.
  • a camera K is attached to the machine frame 10 between the milling box 13 and the rear chassis 12, with which the milling image is recorded and recorded.
  • the image is transmitted to a screen device, BS in the driver's cab 14 of the machine and displayed.
  • the driver sitting on the driver's seat 15 can be on the im
  • the screen device BS arranged in the area of the dashboard 18 can see the milling image and check its condition and draw conclusions about its quality.
  • a permanent control can take place if the camera K and the screen device BS are switched on during the entire operating time of the machine.
  • the control can, however, also be modified in such a way that the devices are switched on and a display only takes place on the basis of an initiated query.
  • Sensors S2 and S4 which detect the milling drum position, the milling pressure or the milling torque, are accommodated on the milling box 13.
  • a sensor S5 attached to the machine frame 10 above the milling box 13 detects the vibrations of the milling box 13 in the direction of travel, transverse to the direction of travel of the machine and perpendicular to the roadway.
  • the machine frame 10 can be adjusted with respect to the chassis 11 and 12 via a height adjustment device in order to change the depth of engagement of the milling drum in the roadway.
  • the depth of engagement is recorded with the sensor S1.
  • the pressure of the height adjustment can be detected via sensors S9.
  • the milled material removed is carried away from the milling box 13 via a conveyor device, this conveyor device having an endless conveyor belt 17 which is hinged at one end to the machine frame 10 and, as the sensors S11 and S12 show, can be adjusted in height and pivoted to the side, to ensure a takeover by a vehicle parked below without having to fear damage to the vehicle and / or the endless conveyor belt 17.
  • the measured values recorded by the sensors S1 to S12 are also transmitted to the driver's cab 14 and displayed in the area of the dashboard 18.
  • you can all sensors are assigned individual display elements that can be activated permanently or on request.
  • only one central display device can be assigned to all sensors, on which the queried measured value is displayed, the display also containing the specified, permissible range for the measured value.
  • the measured values can be recorded continuously and compared with the specified measured value ranges. If the measured value is below or above the specified measured value range, a warning signal can be triggered automatically and the error situation can be displayed on the central display device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)

Claims (18)

  1. Fraiseuse routière comprenant un tambour de fraisage (30) équipé de plusieurs pics (32)
    caractérisé en ce que
    la fraiseuse routière est équipée d'un dispositif de détection pour le contrôle de la qualité de l'image fraisée produite par le tambour de fraisage, le dispositif de détection étant configuré pour détecter optiquement l'image fraisée, au moins par zones, afin de pouvoir détecter les défauts dus à l'usure des pics ou à la rupture des pics sur l'image fraisée.
  2. Fraiseuse routière selon la revendication 1,
    caractérisé en
    ce sens que le dispositif de détection comporte une ou plusieurs caméras (K).
  3. Fraiseuse routière selon la revendication 1 ou 2,
    caractérisé en
    ce que le dispositif de détection comprend au moins un éclaireur configuré pour déterminer la profondeur de fraisage.
  4. Fraiseuse routière selon l'une des revendications 1 à 3,
    caractérisé en
    ce qu'au moins une unité de captage de signaux est associée à au moins un composant de machine ou à un autre élément de machine participant directement ou indirectement au processus de travail,
    en ce que l'unité de captage du signal est configurée pour détecter un état de fonctionnement du composant de la machine, et
    en ce sens que l'unité de captage du signal est reliée à un dispositif de sortie du signal par l'intermédiaire d'un dispositif de traitement du signal.
  5. Fraiseuse routière selon la revendication 4,
    caractérisé en
    ce sens que l'unité de captage du signal est configurée pour détecter l'état de fonctionnement du composant de la machine en continu ou à des intervalles de mesure prédéterminés.
  6. Fraiseuse routière selon l'une des revendications 4 ou 5,
    caractérisé en
    ce sens que le signal capté par l'unité de captage du signal peut être transmis à un circuit d'évaluation,
    caractérisé en ce que le circuit d'évaluation est configuré pour comparer le signal capté avec une valeur par défaut et pour former un signal de différence entre le signal capté et la valeur par défaut.
  7. Fraiseuse routière selon la revendication 6,
    caractérisé
    en ce que la valeur préréglée peut être déterminée empiriquement au moyen d'un circuit de détection, et
    en ce sens que la valeur prédéfinie peut être lue dans le circuit d'évaluation au moyen du circuit de détection.
  8. Fraiseuse routière selon l'une des revendications 1 à 7,
    caractérisé en
    ce qu'il comprend un bâti de machine (10) supporté par un châssis (11, 12), le châssis (11, 12) étant associé à un ou plusieurs moteurs d'entraînement.
  9. Fraiseuse routière selon la revendication 8, si elle dépend de la revendication 4
    caractérisé en ce
    que l'unité d'enregistrement des signaux est configurée pour détecter les paramètres de puissance, en particulier la consommation d'énergie du moteur d'entraînement.
  10. Fraiseuse routière selon la revendication 8 ou 9,
    caractérisé en ce
    que les moteurs d'entraînement sont configurés comme des moteurs électriques et que l'unité de captage des signaux est configurée pour détecter le courant fourni, ou que les moteurs d'entraînement sont configurés comme des moteurs hydrauliques et que l'unité de captage des signaux est configurée pour détecter la pression hydraulique dans le circuit de fluide associé au moteur d'entraînement.
  11. Une fraiseuse routière selon l'une des revendications 8 à 10, lorsqu'elle dépend de la revendication 4,
    caractérisé en ce
    que le châssis de la machine (10) soit soutenu au moins dans certaines zones par au moins un dispositif de réglage (20),
    que le châssis de la machine (10) est réglable en hauteur au moins par zones au moyen du dispositif de réglage (20), un fluide sous pression étant associé à cet effet au dispositif de réglage (20), et que l'unité de détection du signal est de préférence configurée pour détecter la pression dans le fluide.
  12. Fraiseuse routière selon la revendication 11,
    caractérisé en ce que
    le réglage en hauteur du dispositif de réglage (20) peut être déterminé au moyen d'un dynamomètre, par exemple une jauge de contrainte.
  13. Fraiseuse routière selon l'une des revendications 4 à 12,
    caractérisé en ce
    que l'unité de captage du signal est configurée pour détecter l'alimentation de la machine.
  14. Fraiseuse routière selon l'une des revendications 4 à 13,
    caractérisé en ce
    que l'unité de captage du signal est configurée pour détecter la vibration du composant de la machine.
  15. Fraiseuse routière selon la revendication 14,
    caractérisé en ce
    que la vibration est détectable au moyen d'un capteur de déplacement, d'un capteur de vitesse ou d'un capteur d'accélération.
  16. Fraiseuse routière selon l'une des revendications 4 à 15,
    caractérisé en
    ce que l'unité de captage du signal pour la détermination de la position comprend un générateur d'impulsions associé au tambour de fraisage.
  17. Fraiseuse routière selon l'une des revendications 4 à 16,
    caractérisé en
    ce sens que l'unité de captage du signal est configurée pour déterminer une ou plusieurs caractéristiques du moteur.
  18. Fraiseuse routière selon l'une des revendications 4 à 17,
    caractérisé en ce que
    le tambour de fraisage est entraîné par un dispositif d'entraînement et que l'unité de captage des signaux est configurée pour détecter le couple d'entraînement à un ou plusieurs endroits du dispositif d'entraînement.
EP14193195.6A 2002-01-30 2002-10-18 Fraiseuse routière Expired - Lifetime EP2886719B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10203732A DE10203732A1 (de) 2002-01-30 2002-01-30 Baumaschine
EP02781269.2A EP1472413B1 (fr) 2002-01-30 2002-10-18 Machine de construction fonctionnant de manière optimale
PCT/EP2002/011675 WO2003064770A1 (fr) 2002-01-30 2002-10-18 Fraiseuse routiere fonctionnant de maniere optimale

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02781269.2A Division-Into EP1472413B1 (fr) 2002-01-30 2002-10-18 Machine de construction fonctionnant de manière optimale
EP02781269.2A Division EP1472413B1 (fr) 2002-01-30 2002-10-18 Machine de construction fonctionnant de manière optimale

Publications (2)

Publication Number Publication Date
EP2886719A1 EP2886719A1 (fr) 2015-06-24
EP2886719B1 true EP2886719B1 (fr) 2021-02-24

Family

ID=27618246

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14193195.6A Expired - Lifetime EP2886719B1 (fr) 2002-01-30 2002-10-18 Fraiseuse routière
EP02781269.2A Revoked EP1472413B1 (fr) 2002-01-30 2002-10-18 Machine de construction fonctionnant de manière optimale

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP02781269.2A Revoked EP1472413B1 (fr) 2002-01-30 2002-10-18 Machine de construction fonctionnant de manière optimale

Country Status (4)

Country Link
US (2) US7422391B2 (fr)
EP (2) EP2886719B1 (fr)
DE (1) DE10203732A1 (fr)
WO (1) WO2003064770A1 (fr)

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EP1472413B1 (fr) 2015-01-14
WO2003064770A1 (fr) 2003-08-07
US20090035064A1 (en) 2009-02-05
DE10203732A1 (de) 2003-08-21
EP1472413A1 (fr) 2004-11-03
US7905682B2 (en) 2011-03-15
US7422391B2 (en) 2008-09-09
EP2886719A1 (fr) 2015-06-24
US20050207841A1 (en) 2005-09-22

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