EP4116494A1 - Verfahren zum betrieb einer bodenfräsmaschine - Google Patents

Verfahren zum betrieb einer bodenfräsmaschine Download PDF

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Publication number
EP4116494A1
EP4116494A1 EP22181517.8A EP22181517A EP4116494A1 EP 4116494 A1 EP4116494 A1 EP 4116494A1 EP 22181517 A EP22181517 A EP 22181517A EP 4116494 A1 EP4116494 A1 EP 4116494A1
Authority
EP
European Patent Office
Prior art keywords
milling
milling drum
drum
information
data set
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.)
Pending
Application number
EP22181517.8A
Other languages
German (de)
English (en)
French (fr)
Inventor
Philip Verhaelen
Bernd Walterscheid
Sascha Spöth
Florian Peters
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 EP4116494A1 publication Critical patent/EP4116494A1/de
Pending legal-status Critical Current

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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
    • 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
    • E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
    • 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
    • E01C23/12—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • E01C23/122—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
    • E01C23/127—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C47/00—Machines for obtaining or the removal of materials in open-pit mines

Definitions

  • the invention relates to a method for operating a ground milling machine, in particular a road milling machine, a stabilizer, a recycler, a surface miner or the like, with an exchangeable milling drum, the milling drum being equipped with a large number of milling tools, in particular point-shank bits, the milling drum having a current state, wherein a control unit is provided for controlling at least one function of the ground milling machine, and wherein the milling drum has a characteristic feature or the milling drum is assigned a characteristic feature.
  • a road milling machine with a milling drum is known.
  • the milling drum is equipped with a characteristic feature. This characteristic feature can be read out with a suitable reading unit.
  • the characteristic feature is evaluated in a control unit so that the road milling machine recognizes which type of milling drum it is.
  • Different milling drum types are designed to carry out different work tasks.
  • a so-called fine milling roller is used for the upper Milling off part of the top layer of a road surface. In particular, slight bumps in the road surface can be removed. The resulting top layer can be released immediately for use by road traffic.
  • Another type of milling drum is used to remove a complete road surface.
  • special types of milling drums are available for various work tasks, e.g. B. designed with regard to working width, milling depth or desired milling pattern.
  • control unit can specify a suitable set of machine parameters.
  • the road milling machine can be operated appropriately with this set of machine parameters.
  • DE 10 2015 111 249 A1 discloses a road milling machine in which default machine parameters, material properties of the subsurface to be milled and job data can be entered. Suitable target machine parameters can be calculated from these default values using characteristic diagrams. The target machine parameters can be displayed to the machine operator and he can decide whether to set these target machine parameters on the milling machine. Alternatively, the target machine parameters can be automatically transferred to a control unit for controlling the road milling machine.
  • EP 2 716 816 A1 and EP 3 260 603 A1 disclose road milling machines which have a sensor system. The milling volume milled by a road milling machine can be recorded with the sensors.
  • the milling machines described above make it easier for the machine operator to complete the milling task at hand. After the milling task is done is, the milling machine is transported to the next construction site, where the requirements can be met with the built-in milling drum type.
  • the milling drum If the milling drum is in a partially worn condition, it can continue to be used. If the milling tools are completely worn out, the milling tools must be changed. After the change, the milling machine can continue to be operated on the construction site.
  • At least one data set is stored in a memory unit, which contains information about the current state of the milling drum, that a characteristic feature identifying the milling drum is assigned to the data set in the memory unit, and that this data set is transmitted to a processing device will.
  • the status of the milling drum is therefore stored.
  • This state can, for example, be detected directly, for example by measuring the milling drum.
  • an optical measuring method can be used for this purpose, which measures the milling tools with a laser scanner, for example, and compares the result with a measurement result of the milling drum in the unworn state.
  • the state is determined indirectly, for example using job data and/or material parameters of the material removed and/or the set machine parameters that were recorded or taken into account during the use of the milling tools.
  • Material parameters within the scope of the invention can be the abrasiveness and/or the hardness and/or a type of material (for example asphalt or concrete) and/or a Material composition and/or a temperature and/or a layer structure of the surface to be removed.
  • the current status can also be entered manually.
  • an initial state is set manually and then automatically updated during operation.
  • the existing chisels of a milling drum are exchanged for new or partially worn chisels.
  • the operator of the ground milling machine can then manually enter the current status of these bits and thus manually set the starting status. As described above, this status is then automatically updated during operation.
  • Job data is in particular data that was or is recorded during the work deployment of the milling drum, for example the milled area, the milling volume and/or the milling mass of the material removed and/or the milling time.
  • Possible set machine parameters within the scope of the invention are machine parameters that are or were set to be fixed or variable during use of the milling drum, for example the milling depth, the feed speed, the milling drum speed, the motor power transmitted to the milling drum and/or the torque transmitted to the milling drum.
  • One or more of these machine parameters can be part of a machine parameter set.
  • the current condition of the milling drum can be determined solely by one of the aforementioned wear components and stored in the data set.
  • the current state of the milling drum can also be characterized within the scope of the invention by a tuple which includes at least two of the aforementioned wear components and these are taken into account in the data set.
  • the current condition of the milling drum can also be taken into account as at least one key figure in the data set, the key figure for example containing information about the remaining useful life of the milling drum or which can be derived from the remaining useful life of the milling drum. It is also conceivable that the index indicates a residual wear capacity.
  • the key figures can represent the current condition of the milling drum and thus enable conclusions to be drawn about the work results that can be achieved with the milling drum and/or the work output that can still be achieved by the milling drum.
  • the current condition of the milling drum can also include a qualitative assessment. In particular, it can be indicated accordingly whether the milling drum is basically still usable.
  • the qualitative classification can also take into account the efficiency with which the milling drum can complete a milling task or the quality of the work result that can be produced by the milling drum, for example in the form of a percentage. It is also conceivable that a large number of key figures for individual milling drum components are taken into account in the data set.
  • a single key figure and/or a qualitative evaluation can also be derived as an "overall state of wear" from the overall consideration of a large number of key figures.
  • a data record is formed according to the invention, which reflects the current state of the milling drum.
  • This data record is linked in the storage unit to the characteristic feature that individualizes the milling drum.
  • the characteristic feature is a unique identification for an individual milling drum.
  • the data set can then be transmitted to a processing device.
  • the processing device can be arranged on the ground milling machine, for example. It is also conceivable that the processing device is spatially separated from the ground milling machine. For example, it is conceivable that the processing device is connected to the ground milling machine at least temporarily by wire or wirelessly.
  • a further processing device can also be provided in addition.
  • the further processing device and the processing device can be combined in a common unit or it can preferably be provided that the processing device and the further processing device are arranged spatially separate from one another.
  • the data record can be evaluated in the further processing device.
  • a computing unit determines whether this milling drum is in principle suitable for an upcoming milling task. It can then be determined in the further processing device whether this basically suitable milling drum meets certain requirements with the present current state resulting from the data record.
  • the milling drum that is actually best suited for the task at hand can also be selected in the further processing device from a pool of milling drums that are in principle suitable for carrying out an upcoming milling task according to their milling drum type.
  • the suitability of the milling drum can be determined by taking into account the current condition of the pool’s milling drums.
  • a criterion for this can be specified, for example, that the most suitable individual milling drum is filtered out of the pool, for example with the additional processing device, with which the task at hand can be accomplished most quickly, efficiently or cost-effectively.
  • the current condition of the milling drum is classified according to specified criteria.
  • a user or the further processing device can then determine whether the milling drum meets the requirements set for a planned milling job.
  • the further processing device determines whether the present milling drum is sufficiently suitable for an upcoming milling task.
  • the further processing device can inform the user on request which of the milling drum(s) is/are suitable for the planned milling job.
  • the usability, the quality of the work result that can be generated with the milling drum and/or the efficiency of the milling drum can be determined. These parameters can in particular be derived from the stored data record containing the current status of the milling drum.
  • the quality of the milling drum is assessed, it can be determined, for example, in the further processing device which milling pattern quality can be produced with the present milling drum.
  • the present milling drum or the milling drums present in a pool can be classified on a quality scale based on the data set, or it can be determined whether the milling drum can be used to produce the required milling pattern quality.
  • the efficiency of the milling drum is determined, it is determined in the further processing device which machine parameters are required in order to operate the milling drum as intended with the present current state of the milling drum. For example, it can be determined which drive power and/or which drive torque has to be applied for the intended use in order to achieve the desired work result, for example. Correlated with this, it can be determined how high the consumable consumption (for example the fuel consumption and/or the coolant consumption) is for the intended use.
  • the consumable consumption for example the fuel consumption and/or the coolant consumption
  • the usability (functionality) of the milling drum it can be determined on the basis of the data set whether the milling drum can basically still be used for the intended or planned use.
  • job data is in particular data that was or is recorded during the use of the milling drum, for example the milled area, the milling volume and/or the milling mass of the material removed and/or the milling time.
  • a planned change to the material to be processed for example a milling route, a milling output, a milling work and/or a milling work time, can also be used as job data.
  • a mass or a milling volume of the material to be removed can be specified as milling work. This can lead to a required milling distance and milling depth.
  • a work per time can be specified as the milling performance, for example a mass to be processed per time, a material volume to be processed per time or an area or distance to be processed per time.
  • Working time may include when a given job must be completed. It can also indicate when there is a good time to change the tillage tools, for example at the end of a shift or when the tiller is planned to be idle.
  • a characteristic feature within the meaning of the invention can in particular be an individualizing identification applied at a suitable point on the milling drum, for example a barcode, a sequence of numbers or letters.
  • a characteristic feature can also be an identifier that is present in or on an optically or electrically readable element, for example an active or passive transponder, for example an RFID transponder or the like.
  • the characteristic feature of the milling drum is manually recorded by the machine operator.
  • the characteristic feature of the milling drum is read out with a reading unit.
  • the reading unit can be part of the ground milling machine or can be connected to the ground milling machine via a wired or wireless line in order to transmit data.
  • the reading unit is part of a separate computing unit that is designed to make wireless contact with the control unit of the ground milling machine.
  • a milling drum can then be uniquely identified wirelessly via the separate computing unit.
  • the separate processing unit can have the memory unit in which the characteristic feature of the milling drum is linked to the data record containing information about the milling drum.
  • the data set can then be transmitted to the processing device.
  • the storage unit on which the characteristic feature and the data record containing information about the current state of the milling drum are linked can preferably be arranged on the milling drum.
  • the storage unit can be an electronically readable and writable medium.
  • the characteristic feature and/or the data set can be read out using a suitable reading device, for example when changing the milling drum, and transmitted directly to the processing device.
  • the storage unit is designed separately from the milling drum. Accordingly, after the characteristic feature on the milling drum has been recorded (which can be done manually, for example), the data record linked to this characteristic feature and containing information about the current state of the milling drum must be transmitted from the storage unit to the processing device.
  • the storage unit is designed as a database in which characteristic features and data sets are linked. If the characteristic feature of the milling drum was recorded, the associated data set containing information about the current state of the milling drum can now be determined and transmitted to the processing device.
  • a data set about the current status of the milling drum is stored in the processing device before the start of a milling task. If the milling task is then subsequently carried out, the milling tools are subject to wear. The condition of the milling drum changes accordingly compared to the initial condition. During or after completion of the milling task, the change in the state of the milling drum caused by the milling task can then be assessed or determined. The processing device then generates a new data record from the originally stored data record of this milling drum and the change in status that occurred during the milling task, which then reflects the current status of the milling drum. This new data set thus represents an updated data set that is the last performed milling task is taken into account. It thus represents the status of the milling drum after the milling task has been completed
  • each milling task can be viewed as a single wear event, for example.
  • the resulting change in the status of the milling drum is offset against the status of the milling drum before the milling task was carried out in order to determine the current status of the milling drum.
  • the ground milling machine continuously determines the change in the status of the milling drum while completing a milling task and that a data record is generated at the end of the milling task that contains information about the then current status of the milling drum.
  • the tools which are increasingly subject to wear during the working process, have an effect on the machine parameters and tool wear.
  • a new data set containing information about the current status of the milling drum is preferably transmitted back to the storage device.
  • a (new) data set containing information about the current state of the milling drum is available in the processing device. This new data set is then preferably transmitted to the storage device and linked to the characteristic feature of the milling drum.
  • the data set containing information about the current status of the milling drum can also be regularly transmitted to the storage unit during the milling operation and stored linked to the characteristic feature of the milling drum.
  • the new data set can be transferred to the memory unit on the milling drum at the end of the milling task.
  • the milling drum identified by the characteristic feature is assigned to a ground milling machine.
  • milling data from the floor milling machine can be forwarded to the separate processing unit to determine the data set.
  • a new data set containing the information on the current condition of the milling drum is generated. This is then also transmitted to the storage unit and linked to the characteristic feature of the milling drum.
  • the additional processing device is provided on the separate computing unit. At the request of a user, it can then be assessed, for example in the separate computing unit, whether a milling drum identified by the separate computing unit is suitable for an upcoming milling task. This result can then be transmitted to the operator by the separate computing unit.
  • a machine operator in the workshop has a large number of milling drums at his disposal.
  • the machine operator now asks whether one of the milling drums is suitable for an upcoming milling task.
  • the separate computing unit determines which milling drums are available on site and then gives the operator feedback on which milling drums are suitable for the milling task at hand.
  • the machine operator can then select a suitable milling drum and install it in the soil milling machine.
  • the milling drum has an active transmission element that transmits the characteristic feature and/or the data set to a reading unit.
  • the storage location of the milling drum for example, from the separate computing unit or other reading unit, are recorded. For example, it can then be determined whether a specific milling drum is on a construction site or in the workshop.
  • the milling drum has a position transmitter which is designed to transmit a position signal, preferably at regular time intervals or continuously, and that the characteristic feature and/or the data set of the milling drum is transmitted wirelessly with the position signal, wherein the position transmitter is preferably a GPS transmitter.
  • the milling drum has a passive reading element that is read out with a reading unit in order to record the characteristic feature and/or the data set. An operator can then use a suitable reading device to check various milling drums available to him for their suitability for a specific milling task.
  • the active transmission element is an active RFID
  • the passive reading element is a passive RFID or a readable coding, in particular a barcode, a QR code or the like.
  • the memory unit in which the data set is stored is part of the milling drum or part of the separate computing unit.
  • the data set is/is stored in a suitable storage unit of the milling drum. With a suitable reading device, this data record can then be transferred to the processing device, which can preferably be provided on the ground milling machine. However, it is also conceivable for the data set to be transmitted from the separate computing unit to the processing device, which can preferably be provided on the ground milling machine. This considerably simplifies the course of the process.
  • a particularly preferred variant of the invention is designed in such a way that milling data, in particular the milling duration, the milled material volume and/or the milled area, is recorded during the milling operation of the ground milling machine, and that this milling data or this milling data is offset as an additional data record with the data record , preferably in the processing facility; combined and from this a new data record is generated which characterizes the new current status of the milling drum. In this way, the status of the milling drum is updated and tracked. Provision can be made for the additional data record to be combined with the data record continuously or at intervals during the milling operation. This makes it possible to track the condition of the milling drum at different points in time.
  • the additional data record is combined with the data record after the milling operation. Accordingly, after the milling task has been completed, the new data record, which provides information about the current status of the milling drum, can be generated and stored in the memory unit.
  • the new data set is transmitted to the milling drum, the ground milling machine and/or the separate computing unit.
  • At least one default machine parameter and/or at least one material characteristic of the material to be milled and/or job data is/are recorded by means of an input unit, which can preferably be provided on the floor milling machine. and that the further processing device is designed for this is to determine from the at least one default machine parameter and/or the at least one material parameter and/or the job data whether the milling drum is suitable for an upcoming milling task.
  • the further processing device can determine whether a milling drum is in principle suitable for completing the required task.
  • the job data can specify that the milling drum should be used for a fine milling task, for a complete removal of a road surface or for a partial removal of a road surface.
  • this milling drum which is suitable in principle, is also specifically suitable for completing a specific task.
  • the job data can be used to specify that a certain expansion volume must be milled with the milling drum at a specified milling depth.
  • an operator selects a processing mode using an input unit.
  • various job data can be combined in a processing mode.
  • the operator specifies how efficiently the ground milling machine should complete the milling task.
  • the processing mode can be used to select that the ground milling machine should consume as little as possible of one or more operating resources (e.g. fuel, coolant) (eco mode).
  • the ground milling machine is to be operated with as little wear as possible on the milling tools in order to complete the milling task.
  • the milling task set is to be completed in a time-optimized manner, ie, for example, as quickly as possible.
  • the further processing device determines whether the milling task set can be completed with a milling drum. Additionally or alternatively, it can be provided that a Control unit of the ground milling machine, depending on the selected operating mode and taking into account the data set, suitably sets the machine parameters for operating the ground milling machine, tailored to the selected operating mode, or proposes them to the operator.
  • the object of the invention is also achieved with a milling arrangement with a ground milling machine, in particular with a road milling machine, with a stabilizer, with a recycler, with a surface miner or the like, with an exchangeable milling drum, the milling drum being equipped with a large number of milling tools , wherein the milling drum has a current state, wherein a control unit is provided for controlling at least one function of the ground milling machine, and wherein the milling drum has a characteristic feature.
  • At least one data record is stored in a storage unit, which contains information about the current state of the milling drum, that the characteristic feature that identifies the milling drum is assigned to the data set in the storage unit, and that this data set or a Settlement containing the data record is transmitted.
  • the processing units, computers or similar computer systems described in this patent application, the external processing unit or the ground milling machine can, for example, not shown, have at least one processor, a computer-readable storage medium, a database, an input unit and an output unit.
  • the input unit can be implemented as a keyboard or other user interface and allows an operator to enter instructions.
  • the output unit can be designed as a display or in the form of some other optical or acoustic display.
  • the processor can be embodied as a single controller, which includes the entire functionality described, or multiple controllers can be provided, over which the functionality described is divided.
  • a computer-readable storage medium is to be understood as any form of non-volatile storage medium which contains a computer program product in the form of software executable by the processor, computer instructions or program modules. When executed, these may provide data or otherwise cause the computer system to implement an instruction or operate in a specific manner as defined herein. Provision may further be made for more than one type of storage media to be used in combination to move processor-executable software, computer instructions or program modules from a first storage medium in which the software, computer instructions or program modules are initially stored for execution to the to run the microprocessor.
  • storage media may be non-limiting transmission media or data storage.
  • the data stores can be volatile and non-volatile, removable and non-removable media, equivalently.
  • ASICs Application Specific Integrated Circuits
  • CD Compact Disc
  • flash memory any other medium capable of storing data in a form suitable for processors being. They may be located on a single computer platform or distributed across multiple such platforms unless otherwise noted.
  • Transmission media can contain all concrete media which are suitable for software, computer instructions or program modules which can be executed by the processor to be able to be read out and executed by a processor. Cables, wires, fiber optics, or known wireless media can be used without limitation. In a further embodiment it can be provided that the processor does not represent or require a computer system.
  • the general purpose processor may be a microprocessor, or alternatively a microcontroller, a state machine, or a combination thereof.
  • the processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such combination.
  • a DSP digital signal processor
  • microprocessor a microprocessor
  • microprocessors a plurality of microprocessors
  • microprocessors in conjunction with a DSP core
  • any other such combination Depending on the design, certain acts, processes or functions of each of the algorithms described in relation to the controller may occur in a different order, be added or combined or omitted (e.g. if not all of the functions described are required for the algorithm to run ). Additionally, in certain implementations, acts, processes, or functions may be performed concurrently, such as through multi-threated processing, interrupted processing, or through multiple processors or processor cores, or any other parallel architecture.
  • FIG. 1 shows a ground milling machine 10 in the form of a road milling machine in a schematic representation and in a side view.
  • a machine frame 12 is adjustable in height by four lifting columns 13 of chassis 11, such as chain drives, supported.
  • the ground milling machine 10 can be operated via a controller 20 arranged in the control station 14 .
  • a milling drum 16 which is arranged in a concealed manner and is shown in dashed lines in the illustration, is rotatably mounted in a drum housing 18 .
  • a conveyor 17 is used to transport the milled material.
  • the machine frame 12 is moved over the subsurface to be processed at a feed rate entered via the controller 20 .
  • the height position and the speed of the milling drum 16 can be adjusted from the controller 20 .
  • the milling depth is set via the height position of the milling drum 16 .
  • the height of the milling drum 16 can be adjusted using the height-adjustable lifting columns 13 or other suitable means.
  • FIG. 2 shows a second ground milling machine 10 in the form of a stabilizer in a schematic representation and side view.
  • the second ground milling machine 10 is moved by means of chassis 11 designed as front and rear wheels.
  • the front and rear wheels are attached to the machine frame 12 via front and rear lifting columns 13, so that the working height of the machine frame 12 and thus of the roller housing 18 can be adjusted.
  • a control station 14 is attached to the machine frame 12 .
  • the motor 12.1 arranged within the machine frame 12 drives the milling drum 16 via a drive unit 12.2.
  • the milling drum 16 itself is mounted in the drum housing 18, which is assigned a front and a rear drum flap 18.1, 18.2.
  • the roller flaps 18.1, 18.2 are each designed to be adjustable via an attached hydraulic system.
  • the height of the milling drum 16 can be adjusted via a hydraulic height adjustment 19 along an adjustment path 19.1 indicated by a double arrow.
  • a hydraulic cylinder 19.2 is transmitted to the milling drum 16 via a rotatably mounted deflection lever 19.3 and an actuating rod 19.4 arranged thereon.
  • the milling depth can be set using the height adjustment.
  • FIG 3 shows a ground milling machine 10, for example a ground milling machine 10 in FIGS figures 1 or 2 shown type in a further simplified representation.
  • the ground milling machine 10 has a machine frame 12 to which four undercarriages 11, for example chain drives, are coupled via four lifting columns 13.
  • a milling drum 16 for example in a drum housing 18, can be mounted interchangeably.
  • the ground milling machine 10 has the control unit 15 .
  • a part of this control unit 15 can be a processing device 30, or a Processing device 30 have.
  • the processing device 30 can also be provided as a separate unit, preferably on the ground milling machine 10 .
  • the processing device 30 can also have or form a further processing device.
  • processing device 30 and/or the further processing device can also be arranged separately from the ground milling machine 10 .
  • the milling drum 16 is stored away from the ground milling machine 10 .
  • the milling drum 16 has a milling drum tube.
  • Milling tools can be attached directly or indirectly to the surface of the milling drum tube.
  • a milling tool is directly or indirectly exchangeably connected to the surface of the milling drum tube via a chisel holder.
  • a milling tool can be exchangeably mounted in a chisel holder and the chisel holder can be connected to a base part in an exchangeable manner.
  • the base part is connected to the surface of the milling drum tube, for example welded.
  • the milling drum 16 can have a position transmitter 16.3, for example.
  • This position transmitter 16.3 can be a GPS module, for example, which transmits a position signal, for example at regular intervals or continuously.
  • the milling drum 16 is equipped with a characteristic feature 16.4.
  • This can be contained in a storage unit 16.1, for example.
  • the characteristic feature 16.4 can be a readable coding that is stored in the memory unit 16.1. It is also conceivable that the characteristic feature 16.4 is formed by a sequence of letters and/or numbers, a barcode or a QR code or some other readable coding.
  • Characteristic feature 16.4 can be information regarding a unique identifier for milling drum 16 and/or information about the type of milling drum and/or information about the type of bit holder and/or information about the number of milling tools installed on milling drum 16 and/or information via the line spacing of chisels arranged linearly on the milling drum 16, or be linked thereto.
  • the characteristic feature 16.4 is a fixed feature of the milling drum 16.
  • the milling drum 16 can be installed with the ground milling machine 10 .
  • the characteristic feature 16.4 can be read out by means of a reading unit.
  • the storage unit 16.1 is an RFID transponder in which the characteristic feature 16.4 is stored.
  • the characteristic feature can be read from the RFID transponder using an RFID reader.
  • the reading device can be part of the ground milling machine 10 or the reading device can be a separate device, for example a handset, by means of which the characteristic feature 16.4 on the milling drum 16 is read out.
  • FIG 4 shows that a data set 16.2 is stored in the storage unit 16.1.
  • This data set 16.2 contains information about the current state of milling drum 16. Accordingly, data set 16.2 can contain the information that at least one milling tool and/or milling drum 16 is not worn or that at least one milling tool or milling drum 16 is in a partially worn state present. This information can contain information about the actual quantitative wear and/or information about the actual quantitative residual wear capacity of at least one milling tool and/or the milling drum 16 .
  • information can be encoded in data record 16.2 that provides information about the state of wear and/or the residual wear capacity of at least one bit holder, at least one base part, at least one ejector mounted on the milling drum and/or the milling drum tube. These are therefore variable features of the milling drum 16.
  • information about the milling pattern quality to be expected can be encoded in the data set, this coding providing information about whether a specific milling pattern quality or which milling pattern quality can be milled with the present milling drum 16 . It is conceivable that the milling pattern quality to be expected is encoded on the basis of variable features of the milling drum 16 . Alternatively, a statement about the milling pattern quality to be expected can also be generated in a separate computing unit, to which these variable features are fed and which evaluates these variable features.
  • information about the efficiency and/or the usability of the milling drum 16 can also be contained in the data set 16.2. It is conceivable that the expected efficiency or usability is encoded on the basis of variable features of the milling drum 16 . Alternatively, a statement about the expected efficiency or usability can also be generated in a separate computing unit 40 to which these variable features are sent and which evaluates these variable features.
  • data record 16.2 can also contain information about a fixed feature of the milling drum, such as the type of milling drum, the number of bits installed on the milling drum, the type of bit holder in which the milling bits are mounted, and/or the line spacing of the milling bits on the milling drum , be included.
  • FIG 4 shows that one or more memories are provided in the processing device 30 .
  • a memory 31 for fixed features, a memory 32 for variable features and a memory 33 for calculated features can be provided.
  • the memories 31, 32, 33 can form a single memory.
  • the memory 33 for calculated features contains calculated features from a calculation of one or more of fixed features and/or one or more of the variable features are formed.
  • one or more fixed features, one or more variable features/or one or more calculated features of a milling drum 16 can be stored in the processing device 30 .
  • figure 5 shows that the milling drum 16 is installed in the milling drum box 18 of the ground milling machine 10 . Before the milling drum 16 is installed or when the milling drum 16 is installed, the memory unit 16.1 is read out.
  • One or more items of information about the milling drum held in the memory unit form the data record 16.2, which contains information about the current status of the milling drum 16.
  • This data record 16.2 is transferred to the processing device 30.
  • the fixed attributes are stored in the fixed attribute memory 31 and the variable attributes are stored in the variable attribute memory 32 .
  • a computing unit selects from one or more of the fixed characteristics and one or more of the variable characteristics that are calculated.
  • the calculated features are stored in the memory 33 for calculated features.
  • the ground milling machine 10 can be transferred to the milling operation.
  • One or more relevant operating variables of the ground milling machine 10 are determined during the milling operation or after the milling operation. For example, the operating time of the ground milling machine, the volume of material cut, the average or detailed depth of cut, the average or detailed mechanical load, e.g. engine power or drive torque, the average or detailed feed, the force/or load on the cutting bits on average or in detail and/or the number of overload events is recorded using suitable recorders, for example sensors.
  • the type of milled material for example asphalt or concrete, can also be recorded as a relevant operating variable and/or it can be recorded whether milling took place with or without loading the milled material and/or information about the number of the milling drum change processes are recorded.
  • Changes in the wear of the milling drum 16 or a part of the milling drum 16 are calculated in a computing unit from the relevant operating variables and made available in an additional data set.
  • a new data record is created in the computing unit, taking into account data record 16.2 and the additional data record.
  • This new data set is stored in the storage unit 16.1, such as figure 8 indicates.
  • This new data set then forms data set 16.2, which provides information about the current status of milling drum 16.
  • FIG. 12 further illustrates that after the end of the milling process, the milling drum 16 can be removed.
  • the removed milling drum 16 now contains the data set 16.2 and is available for re-use.
  • the memories 31, 32, 33 in the processing device 30 can now be deleted, for example, and/or the data contained therein can be used for other purposes.
  • a separate processing unit 40 is provided.
  • This separate processing unit 40 has a connection to a wireless network, for example to a telephone line or the Internet.
  • a receiving circuit can be assigned to the arithmetic unit 40 or this arithmetic unit 40 can have a receiving circuit which is suitable for receiving and evaluating the signal transmitted by the position transmitter 16.3 in order to localize the location of the milling drum.
  • it can be a GPS receiver.
  • figure 10 further illustrates that a connection to ground milling machine 10 may be established over a telephone line or over the Internet.
  • the ground milling machine 10 also has a GPS transmitter whose signal can be received and evaluated by the computing unit 40 in order to localize the location of the ground milling machine 10 .
  • the milling drum 16 is again constructed similarly to the milling drum 16 according to the exemplary embodiment according to FIGS Figures 1 to 9 . Reference can therefore be made to the above statements.
  • the milling drum 16 again has a storage unit 16.1. At least one characteristic feature 16.4 of the milling drum 16 is again stored in the storage unit 16.1 so that it can be read out.
  • figure 10 shows that the computing unit 40 can detect the position of the milling drum 16 via the position transmitter 16.3.
  • the characteristic feature 16.4 of the milling drum 16 can also be transmitted to the computing unit 40 with the signal emitted by the milling drum 16. This information can be modulated onto the signal transmitted by the position transmitter 16.3.
  • the computing unit 40 has a memory.
  • the data record 16.2 which contains information about the current state of the milling drum 16 and is linked to the characteristic feature 16.4, is stored in this memory.
  • figure 11 illustrates that the milling drum 16 can be installed again with the ground milling machine 10 .
  • the characteristic feature 16.4 of the milling drum 16 can be detected.
  • the characteristic feature 16.4 is transferred from the memory unit 16.1 to the processing device 30, e.g. B. handed over manually and stored, for example, in the memory 31 for fixed characteristics.
  • FIG. 1 shows that the ground milling machine 10 sends information to the computing unit 40 via the data line.
  • the processing unit 40 is thereby informed that the milling drum 16 with the characteristic feature 16.4 is installed or is to be installed on the ground milling machine 10 .
  • both the separate computing unit 40 and the ground milling machine 10 are aware that the special milling drum 16 with the characteristic feature 16.4 is installed in the ground milling machine 10 .
  • the data set 16.2 stored in the computing unit 40 and linked to the characteristic feature 16.4 can now be transmitted to the processing device 30 of the ground milling machine 10 and stored in the storage units 31 and/or 32. Accordingly, the variable features and/or the calculated features, which are contained in the data record 16.2, are transmitted to the processing device 30.
  • the ground milling machine 10 is set to milling mode. Accordingly figure 7 and the statements made above, one or more relevant operating variables are recorded during the milling operation.
  • An additional data set is generated from one or more of the recorded relevant operating variables continuously or at intervals or at the end of the milling task.
  • a new data record is generated using data record 16.2 and the additional data record. This new data record then forms the data record 16.2, which contains information about the current status of the milling drum 16.
  • the new data set in the ground milling machine 10 is generated. However, this is not absolutely necessary. Rather, it is also conceivable that the additional data record is transferred from the ground milling machine 10 to the computing unit 40 . Since data set 16.2 is also present in processing unit 40, the new data set can also be generated in processing unit 40 and stored there and/or transmitted back to ground milling machine 10.
  • figure 16 shows further that after the completed milling task, the milling drum 16 can be removed and stored separately, such as figure 17 indicates.
  • FIG. 12 also shows that at least one of the memories 31 to 33 can be deleted after the milling task.
  • figure 18 shows a further development of the invention which can be used in a ground milling machine 10 according to the invention.
  • the machine operator is asked whether one or more default machine parameters should be taken into account. If the machine operator would like to enter a default machine parameter, for example a desired feed rate, a desired milling drum speed, a desired milling depth, a desired drive power for milling drum 16 and/or a desired drive torque for milling drum 16, he can enter these, for example via the Control unit 15 at the control station 14.
  • a default machine parameter for example a desired feed rate, a desired milling drum speed, a desired milling depth, a desired drive power for milling drum 16 and/or a desired drive torque for milling drum 16
  • the machine operator is asked whether one or more material parameters of the material to be milled should be taken into account. If the machine operator would like to enter one or more material parameters, he can enter them, for example via the control unit 15 on the control station 14.
  • the machine operator is asked whether one or more job data should be taken into account. If the machine operator would like to enter one or more job data, he can enter them, for example via the control unit 15 on the control console 14.
  • a computing unit of the ground milling machine 10 ascertains the type of milling drum required in principle for the upcoming milling task.
  • the actually suitable milling drum 16 from the pool or the actually suitable milling drums 16 from the pool are displayed to the operator.
  • B. be identified by specifying the characteristic feature 16.4.
  • Block 50.8 illustrates that the actually appropriate and selected milling drum 16 is connected to the ground milling machine 10.
  • Block 50.9 shows that the milling data of the ground milling machine 10 is recorded during or after the milling operation and the new actual current state of the milling drum is determined from this. Additionally or alternatively, it can be provided according to block 50.10 that the actual current state of the milling drum 16 is determined by means of a detection device, for example a laser scanner or a camera. In block 50.11, the new (updated) data set 16.2 is generated and stored according to 50.12, for example in the computing unit 40 and/or the storage unit 16.1 of the milling drum 16.

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EP22181517.8A 2021-07-07 2022-06-28 Verfahren zum betrieb einer bodenfräsmaschine Pending EP4116494A1 (de)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
EP2716816A1 (en) 2012-10-08 2014-04-09 Wirtgen GmbH Construction machine and method of determining usage thereof
EP2887049A1 (de) * 2013-11-25 2015-06-24 Wirtgen GmbH Verschleißprognoseverfahren und Wartungsverfahren für eine Bodenbearbeitungsmaschine
DE102015111249A1 (de) 2015-07-10 2017-01-12 Wirtgen Gmbh Bodenbearbeitungsmaschine und Verfahren zum verschleißoptimierten Betrieb einer Bodenbearbeitungsmaschine
DE102016113251A1 (de) 2015-10-27 2017-04-27 Wirtgen Gmbh Fräsmaschine und Verfahren zum Betrieb einer Fräsmaschine

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Publication number Priority date Publication date Assignee Title
US20110121633A1 (en) * 2006-02-10 2011-05-26 Hall David R Billing System Integrated into a Milling Machine
US20130035875A1 (en) * 2011-08-02 2013-02-07 Hall David R System for Acquiring Data from a Component
US10385688B2 (en) * 2016-12-21 2019-08-20 Caterpillar Paving Products Inc. Wear monitoring system for milling drum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2716816A1 (en) 2012-10-08 2014-04-09 Wirtgen GmbH Construction machine and method of determining usage thereof
EP3260603A1 (en) 2012-10-08 2017-12-27 Wirtgen GmbH Determining milled volume or milled area of a milled surface
EP2887049A1 (de) * 2013-11-25 2015-06-24 Wirtgen GmbH Verschleißprognoseverfahren und Wartungsverfahren für eine Bodenbearbeitungsmaschine
DE102015111249A1 (de) 2015-07-10 2017-01-12 Wirtgen Gmbh Bodenbearbeitungsmaschine und Verfahren zum verschleißoptimierten Betrieb einer Bodenbearbeitungsmaschine
DE102016113251A1 (de) 2015-10-27 2017-04-27 Wirtgen Gmbh Fräsmaschine und Verfahren zum Betrieb einer Fräsmaschine

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