EP4286589A1 - Machine automotrice de travail du sol et procédé de commande d'une machine automotrice de travail du sol et procédé de traitement du sol avec une ou plusieurs machines automotrices - Google Patents

Machine automotrice de travail du sol et procédé de commande d'une machine automotrice de travail du sol et procédé de traitement du sol avec une ou plusieurs machines automotrices Download PDF

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Publication number
EP4286589A1
EP4286589A1 EP23172720.7A EP23172720A EP4286589A1 EP 4286589 A1 EP4286589 A1 EP 4286589A1 EP 23172720 A EP23172720 A EP 23172720A EP 4286589 A1 EP4286589 A1 EP 4286589A1
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EP
European Patent Office
Prior art keywords
machine
soil
bank
cross slope
tillage
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
EP23172720.7A
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German (de)
English (en)
Inventor
Matthias Fritz
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Wirtgen GmbH
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Wirtgen GmbH
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Filing date
Publication date
Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP4286589A1 publication Critical patent/EP4286589A1/fr
Pending legal-status Critical Current

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    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/004—Devices for guiding or controlling the machines along a predetermined path
    • 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
    • E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
    • 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

Definitions

  • the invention relates to a self-propelled soil cultivation machine, in particular a road milling machine, which has a machine frame carried by drives and a soil processing device, in particular a milling drum, arranged on the machine frame, and lifting devices assigned to the drives.
  • the invention relates to a method for controlling a self-propelled soil cultivation machine, in particular a road milling machine.
  • the invention relates to a method for processing a soil with a self-propelled soil processing machine, in particular a road milling machine, with the soil processing machine being used to process adjacent tracks in successive operations, and a method for simultaneously processing a first track with a first and a second track with a second self-propelled soil cultivation machine, in particular road milling machine.
  • the invention also relates to a machine combination of several soil cultivation machines for simultaneous cultivation of the soil.
  • a soil cultivation machine is understood to mean a construction machine that is suitable for removing material from a soil.
  • the ground to be processed can, for example, be an existing traffic area (road) from which material is to be milled.
  • Self-propelled tillage machines of various designs are used in road construction. These soil cultivation machines include the well-known road milling machines, with which existing road layers of the road superstructure can be removed.
  • the well-known road milling machines have a rotating milling drum that is equipped with milling tools for processing the road.
  • the milling drum is arranged on the machine frame, which is adjustable in height relative to the road to be processed.
  • the height of the machine frame is adjusted using lifting devices that are assigned to the individual drives (tracked drives or wheels). To mill away a damaged road surface, the machine frame is lowered so that the milling drum penetrates the road surface.
  • the lifting devices allow both the height adjustment of the machine frame or the milling drum and the setting of a predetermined inclination of the machine frame or the milling drum relative to the horizontal or the surface of the road.
  • the known road milling machines have milling depth control devices or leveling systems which have one or more measuring devices for measuring the distance between a reference point on the road milling machine and the road surface to be machined or another surface or line, for example a plane created by a laser or a taut wire.
  • Milling depth control devices or leveling systems generally also have a measuring device for measuring the transverse inclination of the machine frame.
  • a leveling device for a road milling machine which provides a distance measuring device for detecting the actual value of the milling depth on both the left and right side of the road milling machine.
  • the milling depth can be regulated on the left and right side of the machine.
  • the roads to be processed can have different profiles and the cross slope can change.
  • the road surface In a right-hand bend, the road surface is inclined to the right relative to the horizontal in the direction of travel and to the left in a left-hand bend.
  • a road On a straight stretch of road, a road may slope to one side or the other. As a result, the cross slope of a road can change over the course of the route.
  • the tillage machine is positioned on the road.
  • the lifting devices assigned to the drives are then retracted so that the machine frame with the milling drum is lowered.
  • the machine frame is lowered until the milling tools of the rotating milling drum just touch the road surface. This process is called “scratching”.
  • the milling drum or the milling drum axis should be aligned at a predetermined transverse inclination relative to the horizontal, in particular parallel to the road surface to be machined, which determines the orientation of the machine frame on which the milling drum is arranged. This cross slope can also be zero.
  • the milling depth can be measured on both sides of the road milling machine.
  • the distance of a reference point related to the machine frame of the road milling machine, which is on the left side of the milling drum in the working direction, to the unprocessed soil on the left side and the distance of a reference point related to the machine frame of the road milling machine, which is on the right side of the Milling drum is measured in relation to the unworked ground on the right side.
  • the milling depth can be measured on the left side of the milling drum.
  • a guide wire could be laid to measure the distance on the right side of the construction machine, but in practice this proves to be relatively complex.
  • the milling depth on the right side of the tillage machine could also be regulated via the transverse inclination of the machine frame or the milling drum relative to the horizontal, which can be detected when the machine is advanced using an inclination sensor. Tilting the tillage machine to the left leads to a reduction in the milling depth on the right side of the tillage machine and tilting the milling machine to the right leads to an increase in the milling depth on the right side of the tillage machine.
  • the transverse inclination to be set target value
  • additional information (data) about the bank gradient along the section to be machined would have to be provided before the milling work begins. In practice, this requires walking along the section of road to be worked on, measuring the cross slope and placing appropriate markings on the road.
  • the DE 10 2014 018 082 A1 describes an automated method for controlling a milling machine, in which markings placed on the road are captured with a camera in order to generate control commands assigned to the markings.
  • the invention is based on the object of creating a soil cultivation machine which enables precise cultivation of the soil, in particular precise Processing the soil without providing additional information about the transverse slope of the soil surface before the milling work is also permitted if a suitable reference surface for determining distance values is not available on one side of the section of the route to be processed.
  • an object of the invention is to provide a corresponding method for controlling a soil cultivation machine and a method for processing the soil with a soil cultivation machine in successive work processes or the simultaneous processing of the soil with two or more than two soil cultivation machines, which is also possible in the absence of a suitable reference area on one side of the tillage machine allows precise processing of the soil, in particular without the provision of additional information about the transverse inclination of the soil surface before the milling work.
  • Precise processing of the soil should also be possible if the transverse slope of the route to be processed changes over the course of the route, for example in a curve or when a straight route changes into a curve or vice versa.
  • inventions described below may include one or more of the features or combinations of features mentioned below.
  • a feature designated by an indefinite article can also be present multiple times if the indefinite article is not to be understood as an explicit reference to a single use.
  • a designation of features with a number word, for example "first and second”, does not exclude the possibility that these features may be present additional times in addition to the number specified by the number word.
  • the term “may” is also to be understood as “preferably” or “expediently”.
  • the self-propelled soil cultivation machine in particular a road milling machine, has a machine frame carried by drives and a soil cultivation device, in particular a milling drum, arranged on the machine frame.
  • the drives are assigned lifting devices, which can be retracted or extended to lower or raise the drives relative to the machine frame.
  • the soil cultivation machine has a control device that is configured in such a way that Control signals for the lifting devices are generated.
  • the control device can be at least partially part of a central control and computing unit of the soil processing machine or can form an independent assembly, whereby the control device can also consist of several units.
  • the lifting devices are designed in such a way that the drives are retracted or extended depending on the control signals.
  • the self-propelled soil cultivation machine is characterized by a transverse inclination model determination device, which provides the information required in a preceding work process for carrying out a work process following the preceding work process with regard to the transverse inclination to be set of the machine frame or the longitudinal axis of the soil cultivation device, in particular the milling drum, so that the subsequent processing process can also be carried out if a suitable reference surface for determining distance values is not available on one side of the section of route to be processed.
  • the transverse inclination model determination device has a transverse inclination sensor which is designed in such a way that when the soil cultivation machine is advanced in a previous work process, in particular when milling a section of the road on the inside, a sequence of transverse inclination values describing the transverse inclination of the processed soil in a direction transverse to the working direction , in particular for milling a section of road on the outside of the road.
  • the bank slope model determination device has an evaluation device which is designed in such a way that a bank model describing the bank slope is created from the sequence of bank slope values.
  • the bank model determination device comprises a storage device for storing a bank model determined in a previous work process.
  • the control device is configured in such a way that it provides a bank slope recording mode for a preceding track, in which bank slope values are determined in the preceding track with the bank slope sensor when the tillage machine is advanced, and with the evaluation device a bank slope model for a track is determined from the bank slope values The track following the previous track is created and the bank model is stored in the storage device.
  • the control device is also configured in such a way that it provides a cross slope control mode for a track following the previous track, in which when the soil processing machine is advanced in the following track, the control of at least one of the lifting devices depends on the cross slope values that are on the Based on the cross slope model read from the storage device, this takes place. This simplifies and speeds up soil cultivation.
  • the cross slope model should be such that the model provides all the information (data) required to control the cross slope.
  • Models suitable for this are known to those skilled in the art.
  • a particularly suitable model is the well-known TIN model (Triangulated Irregular Network model), which models the transverse slope of the desired terrain surface using a triangular network.
  • the TIN model allows the determination of the cross slope at all points that lie in or on the triangles that form the TIN model through interpolation. The procedures or algorithms required for this are known to those skilled in the art.
  • the embodiment of the soil cultivation machine described above allows the processing of adjacent paths in successive work steps with the same machine.
  • simultaneous processing of adjacent paths with two tillage machines or more than two tillage machines is also possible if one tillage machine leads another tillage machine in the longitudinal direction of the route, i.e. H. the tillage machines do not drive next to each other at the same height, which is not possible anyway with a seamless transition between the individual lanes, which is the aim.
  • One of the two soil cultivation machines according to the invention for carrying out soil cultivation in conjunction with another soil cultivation machine according to the invention has a bank model transmission device which has a data transmission device, the data transmission device being designed in such a way that the bank model is sent to a data reception device of another soil cultivation machine traveling in a different track or sent to a cloud.
  • the control device is configured in such a way that the control device provides a bank slope recording mode in which bank slope values are determined with the bank slope sensor when the tillage machine is advanced in a track, and a bank slope model is created from the bank slope values with the evaluation device and the bank slope model is sent to a data receiving device Another tillage machine traveling in a different lane or to a cloud is sent, so that the cross inclination of the machine frame or the tillage device, in particular the milling drum, of the other tillage machine can be adjusted automatically with the information (data) provided by the cross slope model.
  • the other tillage machine has a bank model transmitting device which has a data receiving device which is designed such that a bank model is received from the data transmitting device of the one tillage machine or a cloud, the control device being configured such that the control device provides a bank control mode , in which when the soil cultivation machine is advanced in the track other than the track in which the bank slope was determined, at least one of the lifting devices is controlled at least as a function of the bank slope values, which are determined on the basis of the bank slope model.
  • both soil processing machines can have a data transmitting device and a data receiving device, so that both machines can take on both tasks.
  • Both machines can also have a memory device for storing the cross slope model, so that the soil can be processed in successive work processes with both machines without the other machine.
  • the control device of the self-propelled tillage machine preferably has both a first measuring device for measuring the distance of a reference point on the tillage machine to the surface of the uncultivated soil on one side of the tillage device in the working direction of the tillage machine and a second measuring device for measuring the distance of a reference point on the tillage machine to the surface of the unworked soil on the other side of the tillage device in the working direction of the tillage machine.
  • the other side is understood to mean the side opposite one side.
  • One side can be the in Working direction on the left side and the other side being the right side in the working direction or vice versa.
  • both measuring devices are only required for the previous work process. For leveling in the subsequent work process, a measuring device is required on only one of the two sides, since cross slope control takes place in the subsequent work process.
  • the control device can be configured for the creation of the bank slope model in such a way that in the bank slope recording mode, the lifting devices are controlled in such a way that when the soil cultivation machine is advanced, the milling depth recorded with the first measuring device is on one side of the soil cultivation device and the milling depth recorded with the second measuring device on the other side of the soil cultivation device is kept essentially constant regardless of the nature of the soil surface (copy milling).
  • the milling depth specified on both sides of the tillage machine in a previous work process determines the transverse inclination, on the basis of which a subsequent work process can be carried out.
  • the control device can be configured in such a way that at least one of the lifting devices is controlled in such a way that when the soil cultivation machine is advanced, the milling depth recorded with one of the two measuring devices, if two measuring devices are present, is independent of on one of the two sides of the soil cultivation device the condition of the ground surface is kept essentially constant.
  • At least one of the lifting devices can then be controlled at least as a function of the transverse inclination values, which are determined on the basis of the transverse inclination model, in such a way that the machine frame assumes a transverse inclination during the advance of the soil processing machine, which corresponds to the transverse inclination specified by the transverse inclination model.
  • the soil cultivation machine can have a position determination device, the control device being designed in such a way that position-related transverse slope values are determined from the transverse slope values in order to generate the transverse slope model, wherein the position-related transverse slope values can relate to a coordinate system that is independent of the soil cultivation machine.
  • position-related transverse slope values can relate to a coordinate system that is independent of the soil cultivation machine.
  • the position-related bank slope values can be the x coordinates and y coordinates of those position points determined with the position determining device in an independent coordinate system at which the bank slope is measured with the bank slope sensor, and include the bank slopes measured at these position points.
  • the position determination device for determining position-related bank slope values can be, for example, a global position determination system (Global Navigation Satellite System (GNSS)).
  • GNSS Global Navigation Satellite System
  • the first and/or second measuring device can have at least one distance sensor, which is a tactile distance sensor or a non-contact distance sensor.
  • a distance sensor which is a tactile distance sensor or a non-contact distance sensor.
  • Such distance measuring systems are state of the art.
  • optical or inductive or capacitive distance sensors or ultrasonic distance sensors can be used as non-contact distance sensors.
  • the edge protection of a road milling machine which is generally provided next to the milling drum, can also function as a tactile sensor of the distance measuring device.
  • a cable sensor can detect the position of the left and/or right edge protection in the working direction, which floats on the floor surface to be worked, relative to the machine frame. As the milling depth is increased, the edge guard moves up relative to the machine frame by an amount corresponding to the change in milling depth. However, if the milling depth is reduced, the edge protection moves down relative to the machine frame by an amount that corresponds to the change in the milling depth.
  • the method according to the invention for controlling a self-propelled soil cultivation machine, in particular a road milling machine, and the methods according to the invention for processing the soil are characterized by a transverse inclination recording mode in which, when the soil cultivation machine is advanced in a track, a sequence of the transverse inclination of the processed soil in one direction to the working direction Cross slope values describing the transverse direction are determined, from the sequence of the cross slope values a cross slope model describing the cross slope is created, and the cross slope model is saved.
  • the methods according to the invention are characterized by a bank slope control mode in which, when the tillage machine is advanced in a track other than the track in which the bank slope values were determined, the control of at least one of the Lifting devices take place at least depending on the cross slope values, which are determined based on the stored cross slope model.
  • the invention relates to a method for processing a soil with a self-propelled soil processing machine, in particular a road milling machine, which has a machine frame carried by drives and a soil processing device, in particular a milling drum, arranged on the machine frame, and lifting devices assigned to the drives for raising and lowering the drives relative to the machine frame having.
  • a self-propelled soil processing machine in particular a road milling machine
  • a soil processing device in particular a milling drum
  • the method according to the invention is characterized in that when processing a preceding track when the tillage machine is advanced, a sequence of transverse inclination values describing the transverse inclination of the worked soil in a direction transverse to the working direction are determined, from the sequence of the transverse inclination values the transverse inclination for the processing of a subsequent track, a transverse slope model is created, and the transverse slope model is saved, and when processing a track following the previous track when the soil processing machine is advanced, the control of at least one of the lifting devices at least as a function of the transverse slope values, which are based on of the saved cross slope model.
  • the method according to the invention includes a bank recording mode and a bank control mode.
  • the lifting devices can be controlled in such a way that when the soil processing machine is advanced, the milling depth recorded with a first measuring device, which is arranged on one side of the soil processing device in the working direction, and the milling depth recorded with a second measuring device, which is located on the in Working direction on the other side of the tillage device, i.e. H. on the opposite side, is kept essentially constant regardless of the nature of the ground surface
  • position-related cross slope values can be determined from the cross slope values determined in the cross slope recording mode, which x coordinates and y coordinates describing the position of position points and those determined at these position points Include cross slopes. To create the cross slope model, it is sufficient if the cross slope is only recorded at a few points that are characteristic of the cross slope.
  • the invention relates to a method for simultaneously processing a soil with a first and a second self-propelled soil processing machine, in particular a road milling machine, each of which has a machine frame carried by drives and a soil processing device arranged on the machine frame, in particular a milling drum, lifting devices assigned to the drives for raising and lowering of the drives opposite the machine frame and a control device for controlling the lifting devices, with the first tillage machine working on a first track and the second tillage machine on a second track at the same time, which are next to each other.
  • the method according to the invention is not limited to processing the soil with only two soil cultivation machines.
  • the soil can also be worked with more than two tillage machines. What is crucial is that in a work process with one machine, the information required for carrying out a work process with another machine or other machines is provided with regard to the transverse inclination ⁇ of the machine frame or the milling drum to be set.
  • a sequence of cross-slope values describing the cross-slope of the worked soil in a direction transverse to the working direction can be determined, from the sequence of the cross-slope values a cross-slope model describing the cross-slope are created and the cross slope model is transmitted to a second tillage machine.
  • the control of at least one of the lifting devices can take place at least as a function of the cross slope values, which are determined on the basis of the cross slope model received from the first tillage machine.
  • the information (data) can be transmitted via a cloud.
  • Fig. 1 shows an exemplary embodiment of a self-propelled tillage machine 1 in a side view.
  • the tillage machine is a road milling machine and the ground to be tilled is a road.
  • the left side one side of the tillage machine in the working direction
  • the right side of the tillage machine the tillage machine being intended for processing a road for right-hand traffic.
  • Fig. 2 shows the individual components of the soil cultivation machine 1 in a simplified schematic representation, the corresponding components being provided with the same reference numbers.
  • the tillage machine 1 has a chassis 2 and a machine frame 3.
  • the chassis 2 has a front left drive 4 and a front right drive 5 in the working direction A and a rear left drive 6 and a rear right drive 7 in the working direction A.
  • Chain drives or wheels can be provided as drives.
  • the soil processing machine 1 has lifting devices 4A, 5A, 6A, 7A assigned to the individual drives 4, 5, 6, 7, of which the machine frame 3 will be carried.
  • the lifting devices 4A, 5A, 6A, 7A each have a piston/cylinder arrangement 9 for adjusting the drives.
  • the rear drives 4, 5 of the tillage machine 1 are hydraulically positively coupled to one another in such a way that raising the left rear drive 4 lowers the right rear drive 5 and lowering the left rear drive 4 causes the right rear drive 5 to be raised.
  • the drives can also be linked mechanically.
  • the front axle can also be positively coupled, for example as in some compact or small milling machines.
  • a hydraulic coupling of the drives of a front axle is, for example, in the DE 196 17 442 C1 described.
  • all four drives can also be forcibly coupled ( EP 1 855 899 A1 ).
  • the respective axle can only be replaced by a single one central drive can be formed. Ultimately, it is not important for the invention how the chassis is designed.
  • the soil cultivation machine 1 also has a milling drum 10 equipped with milling tools, which is arranged on the machine frame 3 between the front and rear drives 4, 5, 6, 7 in a milling drum housing 11, which is on the long sides of a left and right edge protection 12, 13 is closed.
  • a conveyor device 14 with a conveyor belt is provided to transport away the milled road surface.
  • the soil cultivation machine 1 has a first, left-hand distance measuring device 14 in the working direction, which is designed such that the distance between a first, left-hand reference point RL related to the machine frame 3 and the ground surface 8 is measured, and a second, right-hand one in the working direction Distance measuring device 15, which is designed such that the distance between a second, right reference point RR related to the machine frame 3 and the ground surface 8 is measured.
  • the two distance measuring devices 14, 15 are tactile measuring devices that make use of the left and right edge protection 12, 13, which is on the left and right side of the machine frame 3 in the working direction between the front and rear drives 4 , 5, 6, 7 is arranged laterally next to the milling drum 10.
  • the first or second measuring device 14, 15 has a left or right cable sensor 12A, 13A, the loose end of the cable 12AA, 13AA being attached to the left or right edge protection 12, 13 ( Fig. 4 ).
  • the left and right edge protection 12, 13 rests on the floor surface 8.
  • the cable pull sensor 12A, 13B measures the distance by which the edge protection 12, 13 moves up and down.
  • the distance between the reference point RL or RR and the floor surface 8 on which the edge protection 12 or 13 rests can be measured. If the edge protection is attached in a height-adjustable manner via two hydraulic cylinders arranged offset in the direction of travel, the height of the edge protection can also be recorded using a position measuring system integrated into the hydraulic cylinder.
  • the soil cultivation machine 1 has a control device 16, which can form an independent assembly or can be at least partially part of the central control and computing unit, not shown, of the construction machine.
  • the control device 16 may, for example, be a general processor, a digital signal processor (DSP) for continuous processing of digital signals, a microprocessor, an application-specific integrated circuit (ASIC), an integrated circuit (FPGA) consisting of logic elements or other integrated circuits (IC) or hardware -Have components to control the lifting devices and record and evaluate the measured values.
  • a data processing program (software) can run on the hardware components. A combination of the different components is also possible.
  • the control device 16 is configured in such a way that the individual steps of the method according to the invention for controlling the soil cultivation machine are carried out.
  • the control device 16 is connected to the cable pull sensors 12A, 13A of the distance measuring devices 14, 15 via signal lines 17E or data lines and generates control signals for the lifting devices 4A, 5A, 6A, 7A.
  • the lifting devices 4A, 5A, 6A, 7A are designed in such a way that their piston/cylinder assemblies 9 are retracted or extended depending on the control signals, so that the drives 4, 5, 6, 7 are raised or raised relative to the machine frame 3 be lowered.
  • the control signals are transmitted via control or data lines 18C.
  • the traffic areas to be processed can have different profiles, whereby the transverse slope ⁇ can change.
  • the road surface In a right-hand bend, the road surface can be inclined to the right relative to the horizontal in the direction of travel and to the left in a left-hand bend.
  • a road On a straight stretch of road, a road may slope to one side or the other.
  • the cross slope of a road can change over the course of the route.
  • Fig. 5 shows the bank gradient in a right-hand curve. The cross slope of the road increases towards the middle of the curve (section a), remains the same in the middle of the curve (section b) and decreases again after the middle of the curve (section c).
  • a surface is to be milled off the right-hand lane of a street with the soil cultivation machine 1.
  • the control device 16 of the soil cultivation machine 1 is configured such that the steps described below are carried out.
  • the Figures 3 , 4 and 6 , 7 show the road surface 8 of the left lane 8L and the right lane 8R of the road S, the center line 8M and the right shoulder 8A.
  • the working width of the milling drum 10 corresponds to approximately half the width of the roadways 8L and 8R.
  • the working width of the milling drum (milling track) is slightly larger than half of the road.
  • the tillage machine 1 should mill the left half 8I (left milling track) of the right road 8R and in a second work step II the right half 8II (right milling track) of the right road 8R.
  • the Figures 3 and 4 show a top view of the road S and a rear view of the tillage machine 1 in the first work step I and the Figures 6 and 7 show a top view of the road S and a rear view of the tillage machine 2 in the second work step II.
  • the road S has a transverse inclination ⁇ to the right shoulder 8A, for example 1%, which can change over the course of the road.
  • the transverse slope ⁇ is in the Figures 4 and 7 oversubscribed.
  • the left and right distance measuring devices 14, 15 are adjusted, in particular the zero point is set.
  • the left and right distance measuring devices 14, 15 measure the distance of the reference point RL, RR to the surface 8 of the unworked soil.
  • the lifting devices 4A, 5A, 6A, 7A are adjusted in such a way that the milling drum 10 just touches the ground surface 8 with the cylindrical lateral surface described by the tips of the milling tools.
  • the lifting devices 4A, 5A, 6A, 7A are retracted until the milling tools of the rotating milling drum 10 begin to scratch the ground, with the milling drum axis 10A being aligned parallel to the ground surface. This process is also known as scratching.
  • the left and right distance measuring devices 14, 15 are set to zero. If the lifting devices 4A, 5A, 6A, 7A are retracted further and the milling drum 10 penetrates the ground, negative distance values are determined. The amount of the distance values corresponds to the milling depth. In this case In the exemplary embodiment, a milling depth of, for example, 40 mm is set.
  • the front left drive 4 is lowered by 40 mm and the front right drive 5 by 40 mm and the rear left drive 6 together with the rear right drive 7 is lowered by 40 mm, resulting in a milling depth of 40 mm.
  • the road surface to be processed with the milling drum 10 should represent a copy of the unprocessed surface, i.e. H.
  • a surface with largely the same layer thickness should be removed over the entire width of the milling drum, so that the transverse inclination ⁇ of the road S is not significantly changed.
  • This process is also known as copy milling.
  • the current milling depth on the right and left side of the milling drum 10 is recorded by the two measuring devices 14, 15. If one of the measuring devices 14, 15 detects a different milling depth, a corresponding correction is made.
  • the control device 16 is configured in such a way that control signals are generated for the lifting devices 4A, 5A, 6A, 7A, so that the lifting devices are retracted or extended depending on the measurement signals from the cable pull sensors 12A, 13A in such a way that when the road milling machine is advanced Milling depth on the left and right sides of the milling drum 10 in the working direction is kept essentially constant, regardless of the condition of the ground surface.
  • control device 16 has a cross slope model determination device 17 ( Fig. 2 ), which is described below.
  • the transverse inclination model determination device 17 has a transverse inclination sensor 17A, which is designed in such a way that when the soil processing machine is advanced, a sequence of transverse inclination values describing the transverse inclination of the worked soil (road) in a direction transverse to the working direction A are determined.
  • the transverse inclination sensor 17A measures the absolute transverse inclination ⁇ of the machine frame 3 and the milling drum 10 or the milling drum axis 10A relative to the horizontal during processing of the road.
  • the bank slope sensor 17A can be arranged anywhere on the machine frame 3. Since the machine frame is rigid, the same transverse inclination ⁇ is measured at every point on the machine frame.
  • the bank slope model determination device 17 has an evaluation device 17B, which is designed such that a bank model describing the bank slope ⁇ is created from the sequence of bank slope values.
  • This bank slope model describes the bank slope ⁇ of a different (future) milling track than the milling track currently being processed by the tillage machine, which in the present exemplary embodiment is the right half 8II of the right roadway 8R.
  • the bank slope model is designed in such a way that the bank slope ⁇ detected in the left milling track currently being worked by the tillage machine is extrapolated to a road section to the right and/or left of this track.
  • the section covered by the cross slope model should have a sufficient width so that this section covers at least the next (right) milling track, but it can also be chosen so wide that two or more milling tracks adjacent to the left and/or right side are covered.
  • the transverse slope in the roadway section to the right and/or left of the milling track that is currently being processed by the tillage machine corresponds to the transverse slope of the milling track that is currently being processed, since the road S should have the same transverse slope ⁇ over its entire width.
  • the bank model determination device 17 includes a storage device 17C, which is configured such that the bank model is stored.
  • the control device 16 is configured in such a way that a cross slope recording mode can be set in which cross slope values are determined with the cross slope sensor 17A when the tillage machine 1 is advanced, and a cross slope model is created from the cross slope values using the evaluation device 17B and the cross slope model is stored in the storage device 17C.
  • the machine When the tillage machine processes the inner half 8I of the right road 8R, the machine is operated in the bank recording mode to create a bank model for processing the outer half 8II of the right road 8R.
  • the bank slope ⁇ of the road S is continuously or discontinuously detected with the bank slope sensor 17A as the tillage machine advances.
  • the Cross slope ⁇ can be measured at certain time intervals at which certain distances are covered. These time intervals can be determined by a predetermined clock frequency.
  • the transverse inclination can be measured at regular intervals, for example from 10 cm to 100 cm, as the tillage machine advances, whereby the advance speed can be kept constant. These distances can also be larger or smaller, for example the distance can be changed statically or dynamically depending on machine parameters, in particular adjusted depending on the milling width or the current steering angle.
  • the transverse slope ⁇ can also be recorded at irregular intervals.
  • the cross slope ⁇ of the road S is recorded discontinuously at constant intervals.
  • the transverse inclination ⁇ of the worked soil surface is thus measured at successive waypoints PW 1 , PW 2 , PW 3 , ..., PW n on the road S when the soil cultivation machine is advanced with the transverse inclination sensor 17A, which lie on a common axis.
  • this axis intersects the longitudinal axis 10A of the milling drum 10 at a right angle and runs along the right outer edge of the milling drum or the milling track. It is assumed that the cross slope ⁇ changes in the longitudinal direction of the road S and does not change in the transverse direction of the road.
  • transverse lines L 1 , L 2 , L 3 , ..., L n result on them the transverse inclination ⁇ is the same in each case.
  • the bank slope model determination device 17 has a position determination device 17D in order to determine position-related bank slope values from the bank slope values.
  • the position determination device 17D can be a global navigation satellite system (Global Navigation Satellite System (GNSS)), which determines the location of the waypoints PW 1 , PW 2 , PW 3 , ..., PW n , at which the bank ⁇ is measured, in one of the tillage machine 1 independent coordinate system determined.
  • GNSS Global Navigation Satellite System
  • the position determination device 17D supplies position values (x, y) at the waypoints PW 1 , PW 2 , PW 3 , ..., PW n or at the times at which the bank slope is measured, which are assigned to the measured bank slope values ( ⁇ (x, y)).
  • the evaluation device 17B of the bank model determination device 17 is configured in such a way that a bank model is created from the sequence of position-related bank values ( ⁇ (x, y)), which describes the bank ⁇ in a section of the road S, which in the present case Embodiment is to the right of the milling track of the tillage machine.
  • the bank model can describe a section of the road S to the left and/or right of the milling track.
  • the evaluation device 17B creates a transverse slope model describing the transverse slope of the terrain surface in the adjacent section(s) of the road S from the transverse slopes ⁇ measured at the waypoints PW 1 , PW 2 , PW 3 , ..., PW n .
  • the cross slope model can be a TIN model (Triangulated Irregular Network (TIN)), whose support points (mass points) K 1 , K 2 , K 3 , ..., K n through triangles D 11 , D 12 , D 21 , D 22 , D 31 , D 32 , D 41 , D 42 , ...
  • D 1n , D 2n are meshed to create a network structure that is present at all points within the network structure, for example at points P 11 , P 12 , P 13 , P 21 , P 22 , P 23 , ..., P n1 , P n2 , P n3 describes the transverse inclination ⁇ .
  • the waypoints PW 1 , PW 2 , PW 3 , ..., PW n at which the transverse inclination is measured, form the internal support points K 11 , K 12 , K 13 , K 14 , ... , Km of the triangles D 11 , D 12 , D 21 , D 22 , D 31 , D 32 , D 41 , D 42 , ... , D n1 , D n2 of the triangle structure.
  • the transverse slope ⁇ can also be measured at other points on the road S.
  • K 2n is equal to the transverse inclination at the internal support points K 11 , K 12 , K 13 , K 14 , . .. , K 1n .
  • the transverse slope ⁇ of the road S can now be determined at any point within the triangles of the triangular structure by interpolation based on the transverse slope model with the known methods or algorithms for a section of the road at least on one side of the tillage machine 1.
  • the cross slope model determined with the measured values in the inner half 8I is read into the memory device 17C for processing the outer half 8II. With regard to the transverse inclination ⁇ , the information required for processing the outer half 8II is therefore available.
  • the Figures 6 and 7 show how the tillage machine 1 processes the external milling track (half 8II).
  • the milling depth cannot be determined with the second, right-hand measuring device 15, since the right-hand edge protection 13 does not rest on the road, but rather on the edge strip 8A, which is not a suitable one forms a reference surface. Therefore, in Fig. 7 only the right edge protection 13 is shown, but not the right measuring device.
  • the control device 16 sets a value of zero for the milling depth on the left side, since the left edge protection 12, which is arranged on the left side between the left drives 4, 6 next to the milling drum 10, rests on the ground that has already been milled, ie is 40 mm below the untreated floor surface 8.
  • the control device 16 For the processing of the outer half 8II, the control device 16 provides a cross slope control mode in which, when the soil cultivation machine is advanced, the lifting devices 4A, 5A, 6A, 7A are controlled at least as a function of the cross slope values, which are determined on the basis of the cross slope model , which is stored in the storage device 17C.
  • the control device 16 is configured in such a way that when the soil processing machine is advanced with the position determining device 17D on the outer half 8II, the x/y coordinates of the relevant points P 11 , P 12 , P 13 , P 21 , P 22 , P 23 , .
  • P n1 , P n2 , P n3 at which the milling drum 10 is located, are determined and for these points the target values ⁇ soll for the cross slope to be set at these points are determined using the cross slope model.
  • These points P 11 , P 12 , P 13 , P 21 , P 22 , P 23 , ..., P n1 , P n2 , P n3 can be points in the milling track of the tillage machine, which relate to a reference point of the tillage machine, for example, a reference point on the milling drum axis 10A of the milling drum 10, in particular the bisector of the milling drum 10.
  • the coordinates (x, y) of the position points are determined by the position determining device (17D).
  • the target values ⁇ soll of the transverse inclination ⁇ are continuously determined at the individual position points on the outer half 8II using the transverse inclination model ( ⁇ (x, y)).
  • the arithmetic operations required for this are carried out using the evaluation device 17B.
  • the control device 16 is configured in such a way that the front right lifting device 7A is controlled in such a way that the actual value of the transverse inclination corresponds to the target value. This ensures that the right milling track connects to the left milling track with the same transverse inclination. Since the transverse inclination of the machine frame 3 or the milling drum 10 is controlled, the milling depth on the right side of the machine frame 3 does not need to be measured, which would not be possible because of the edge strip 8A. In the case of a tillage machine with a front pendulum axle, the rear right lifting device is viewed in an analogous manner controlled. In an analogous perspective, a tillage machine for left-hand traffic provides for control of the left, front or rear lifting device instead of the right, front or rear lifting device.
  • the work process described above can be carried out with only one soil cultivation machine, with the determined cross slope model being read into the memory device 17C and read out from the memory device.
  • Fig. 8 an alternative embodiment of a soil cultivation machine is described, which is designed in a combination of several soil cultivation machines for the simultaneous cultivation of a traffic area.
  • the corresponding components are provided with the same reference numbers.
  • the traffic area can, for example, be a runway for aircraft, which is to be worked on with several tillage machines in order to shorten the processing time.
  • FIG. 8 Two soil cultivation machines 1, 1 'are shown, which work in conjunction. The individual parts are in Fig. 8 provided with the same reference numerals.
  • the tillage machine 1 on the left in working direction A is referred to as the first machine and the right tillage machine 1' as the second machine.
  • the first machine 1 leads the second machine 1 'in the working direction A.
  • the first tillage machine 1 from Fig. 8 differs from that referred to Figures 3 , 4 and 6 , 7 described soil cultivation machine by a in Fig. 2 shown bank slope model transmission device 18, which has a data transmitting device 18A, the data transmitting device 18A being designed such that the bank model is sent to a data receiving device 18B is sent to another tillage machine driving in a different milling track.
  • the second tillage machine 1' from Fig. 8 differs from the tillage machine from the Figures 3 , 4 and 6 , 7 by a cross slope model transmission device 18, which has a data receiving device 18B, which is designed such that the cross slope model of another soil processing machine 1 traveling in a different milling track is received.
  • both soil processing machines 1, 1' can have both a data transmitting device and a data receiving device.
  • the soil cultivation machine described can also have a data transmitting device and/or data receiving device, which is in Fig. 2 is shown, so that this soil cultivation machine can be used universally.
  • the data transmitting and receiving device can be a transmitting and receiving device, which can include a radio transmitter and radio receiver that communicate directly with one another.
  • the data sending device can also send the relevant data to a cloud and the data receiving device can receive data from a cloud.
  • Data sending and data receiving devices can also communicate with each other via a WLAN (Wireless Local Area Network).
  • the first machine 1 sends the transverse inclination model previously determined in the previous section of the route, which describes the transverse inclination ⁇ in the section of the route that relates to the second tillage machine 1', to the second tillage machine 1'.
  • the cross slope model determined by the first tillage machine 1 is sent with the data transmitting device 18A and received by the data receiving device 18B of the second tillage machine 1', the second tillage machine 1' controlling the cross slope on the basis of the previously determined Cross slope model performs as with reference to the Figures 3 , 4 and 6 , 7 is described.
  • the first tillage machine 1 can also adapt the cross slope model to other in Fig. 8 send tillage machines, not shown, so that the runway can be processed with more than two tillage machines at the same time.
  • the left and right distance measuring device of the first tillage machine 1 in the working direction is not part of the left or right edge protection, but is on both sides for distance measurement Measuring system known as a multiplex leveling system 19, 20 is provided, which has several distance sensors 19A, 19B, 19C or 20A, 20B, 20C arranged at a distance from one another on the left and right side of the machine in the longitudinal direction of the processed surface in order to get from the To be able to calculate an average value from the measured values of the individual sensors.
  • the multiplex leveling system may include a front distance sensor 19A, 20A, a middle distance sensor 19B, 20B and a rear distance sensor 19C, 20C.
  • the distance sensors can be attached to booms that are attached to one side of the machine frame 3.
  • the second soil cultivation machine 1 ' only has a distance measuring device 14 on the left in the working direction, since a right distance measuring device is obsolete due to the bank control according to the invention based on the bank model.
  • the left distance measuring device 14 can make use of the left edge protection 12, as with reference to Figures 3 , 4 and 6 , 7 is described.
  • the TIN model must cover a sufficiently wide section of the traffic area.
  • the information required for carrying out a work process following the previous work process with one or more tillage machines can provide information regarding the transverse inclination ⁇ to be set.
  • Fig. 9 shows an exemplary embodiment in which a traffic area is processed with several tillage machines 1, 1 ', 1" at the same time.
  • the first tillage machine 1' driving in a central tilling track II is operated in the bank recording mode, with the bank model covering a section of the traffic area which covers the left and right sides of the middle milling track II in the working direction.
  • the first tillage machine 1 is the pilot machine.
  • the first tillage machine 1 is followed on the left side in the working direction by a second tillage machine 1 '(milling track I) and on the right side a third tillage machine 1 " (milling track III).
  • the second and third tillage machines 1', 1" are subsidiary machines which are operated in the bank control mode based on the bank model determined with the first tillage machine 1.
  • Fig. 10 shows a further exemplary embodiment in which the first tillage machine 1 driving in front in an outer milling track I is operated in the bank slope recording mode, the bank slope model covering a section of the traffic area on the right side of the outer milling track I in the working direction.
  • the first tillage machine 1 is the pilot machine.
  • the first tillage machine is followed on the right side in the working direction in a second tilling track II by a second tillage machine 1', with the second tillage machine 1' being followed on the right side in the working direction in a third tillage track III by a third tillage machine 1".
  • the second tillage machine 1' is operated in the cross slope control mode on the basis of the cross slope model determined with the first tillage machine 1 for the second milling track II. Consequently, the second tillage machine 1 'is a subsidiary machine of the first machine 1.
  • the second tillage machine 1' can at the same time be a pilot machine for the third tillage machine 1" if the second machine 1' is operated simultaneously in the bank recording mode and the third machine 1" in the bank control mode.
  • the second machine 1' then provides a bank model for the third machine 1", which is the third milling track III covers.
  • Fig. 11 shows a further exemplary embodiment in which a traffic area is processed with several tillage machines at the same time.
  • the first tillage machine 1 driving ahead in an outer milling track I is operated in the bank slope recording mode, with the bank slope model covering a section of the traffic area on the right side of the outer milling track I in the working direction.
  • the first tillage machine 1' is the pilot machine.
  • the first tillage machine 1 is followed on the right side in the working direction in a second tillage track II by a second tillage machine 1 ', with the second tillage machine being followed on the right side in the working direction in a third tillage track III by a third tillage machine 1".
  • the second and third tillage machine 1 ', 1" are subsidiary machines that are operated in the bank control mode based on the bank model determined with the first tillage machine 1.
  • Fig. 12 shows a top view of a road that has a straight section which turns into a curve, the road being processed by a soil cultivation machine 1.
  • the right lane of the road is shown on which the tillage machine 1 moves.
  • the tillage machine 1 is one the machine described with reference to the preceding figures.
  • the individual parts are in Fig. 12 provided with the same reference numbers as in the previous figures.
  • the tillage machine 1 processes the left half 8I of the right-hand road in the working direction (left milling track). While the tillage machine 1 moves in the working direction, the TIN model for the right half 8II of the right road (right milling track) is determined.
  • Fig. 12 shows a top view of a road that has a straight section which turns into a curve, the road being processed by a soil cultivation machine 1.
  • the right lane of the road is shown on which the tillage machine 1 moves.
  • the tillage machine 1 is one the machine described with reference to the preceding figures.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Road Repair (AREA)
  • Agricultural Machines (AREA)
EP23172720.7A 2022-05-25 2023-05-11 Machine automotrice de travail du sol et procédé de commande d'une machine automotrice de travail du sol et procédé de traitement du sol avec une ou plusieurs machines automotrices Pending EP4286589A1 (fr)

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DE102022113273.0A DE102022113273A1 (de) 2022-05-25 2022-05-25 Selbstfahrende Bodenbearbeitungsmaschine und Verfahren zum Steuern einer selbstfahrenden Bodenbearbeitungsmaschine sowie Verfahren zum Bearbeiten des Bodens mit einer oder mehreren selbstfahrenden Bodenbearbeitungsmaschinen

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Citations (11)

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Publication number Priority date Publication date Assignee Title
DE19617442C1 (de) 1996-05-02 1998-01-29 Wirtgen Gmbh Fahrwerk für eine Maschine zum Abfräsen von Straßenbelägen
DE19756676C1 (de) * 1997-12-19 1999-06-02 Wirtgen Gmbh Verfahren und Vorrichtung zum Abfräsen von Verkehrsflächen
DE102006020293A1 (de) 2006-04-27 2007-11-08 Wirtgen Gmbh Straßenbaumaschine, Nivelliereinrichtung sowie Verfahren zum Regeln der Frästiefe oder Fräsneigung bei einer Straßenbaumaschine
EP1855899A1 (fr) 2005-03-10 2007-11-21 WIRTGEN GmbH Engin routier
DE102014018082A1 (de) 2014-12-08 2016-06-09 Bomag Gmbh Verfahren zur Steuerung einer Baumaschine, Steuersystem für eine Baumaschine, und Baumaschine
EP3040477A2 (fr) * 2011-06-10 2016-07-06 Wirtgen GmbH Procede et dispositif de determination d'une surface fraisee par au moins un engin ou d'abatteuse a l'aide d'un cylindre de fraisage
DE102017005015A1 (de) * 2017-05-26 2018-11-29 Wirtgen Gmbh Maschinenzug aus einer Straßenfräsmaschine und einem Straßenfertiger und Verfahren zum Betreiben einer Straßenfräsmaschine und eines Straßenfertigers
DE102018127222A1 (de) * 2018-10-31 2020-04-30 Wirtgen Gmbh Straßenfräsmaschine und Verfahren zum Steuern einer Straßenfräsmaschine
DE102019135225A1 (de) * 2019-12-19 2021-06-24 Wirtgen Gmbh Verfahren zum Abfräsen von Verkehrsflächen mit einer Fräswalze, sowie Fräsmaschine zur Durchführung des Verfahrens zum Abfräsen von Verkehrsflächen
US20220290383A1 (en) * 2021-03-10 2022-09-15 Joseph Voegele Ag Method of paving a road surface and asphalt paving system
EP4249680A1 (fr) * 2022-03-23 2023-09-27 Wirtgen GmbH Fraiseuse routière automotrice et procédé de commande d'une fraiseuse routière automotrice

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19617442C1 (de) 1996-05-02 1998-01-29 Wirtgen Gmbh Fahrwerk für eine Maschine zum Abfräsen von Straßenbelägen
DE19756676C1 (de) * 1997-12-19 1999-06-02 Wirtgen Gmbh Verfahren und Vorrichtung zum Abfräsen von Verkehrsflächen
EP1855899A1 (fr) 2005-03-10 2007-11-21 WIRTGEN GmbH Engin routier
DE102006020293A1 (de) 2006-04-27 2007-11-08 Wirtgen Gmbh Straßenbaumaschine, Nivelliereinrichtung sowie Verfahren zum Regeln der Frästiefe oder Fräsneigung bei einer Straßenbaumaschine
EP3040477A2 (fr) * 2011-06-10 2016-07-06 Wirtgen GmbH Procede et dispositif de determination d'une surface fraisee par au moins un engin ou d'abatteuse a l'aide d'un cylindre de fraisage
DE102014018082A1 (de) 2014-12-08 2016-06-09 Bomag Gmbh Verfahren zur Steuerung einer Baumaschine, Steuersystem für eine Baumaschine, und Baumaschine
DE102017005015A1 (de) * 2017-05-26 2018-11-29 Wirtgen Gmbh Maschinenzug aus einer Straßenfräsmaschine und einem Straßenfertiger und Verfahren zum Betreiben einer Straßenfräsmaschine und eines Straßenfertigers
DE102018127222A1 (de) * 2018-10-31 2020-04-30 Wirtgen Gmbh Straßenfräsmaschine und Verfahren zum Steuern einer Straßenfräsmaschine
DE102019135225A1 (de) * 2019-12-19 2021-06-24 Wirtgen Gmbh Verfahren zum Abfräsen von Verkehrsflächen mit einer Fräswalze, sowie Fräsmaschine zur Durchführung des Verfahrens zum Abfräsen von Verkehrsflächen
US20220290383A1 (en) * 2021-03-10 2022-09-15 Joseph Voegele Ag Method of paving a road surface and asphalt paving system
EP4249680A1 (fr) * 2022-03-23 2023-09-27 Wirtgen GmbH Fraiseuse routière automotrice et procédé de commande d'une fraiseuse routière automotrice

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CN220266251U (zh) 2023-12-29
US20230383486A1 (en) 2023-11-30
DE102022113273A1 (de) 2023-11-30

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