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EP4491800A1 - Finisseuse de route dotée d'un réglage de poutre lisseuse - Google Patents

Finisseuse de route dotée d'un réglage de poutre lisseuse Download PDF

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Publication number
EP4491800A1
EP4491800A1 EP23185510.7A EP23185510A EP4491800A1 EP 4491800 A1 EP4491800 A1 EP 4491800A1 EP 23185510 A EP23185510 A EP 23185510A EP 4491800 A1 EP4491800 A1 EP 4491800A1
Authority
EP
European Patent Office
Prior art keywords
screed
height
angle
arrangement
attack
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
EP23185510.7A
Other languages
German (de)
English (en)
Inventor
Stefan Simon
Ralf Weiser
Philipp Stumpf
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.)
Joseph Voegele AG
Original Assignee
Joseph Voegele AG
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 Joseph Voegele AG filed Critical Joseph Voegele AG
Priority to EP23185510.7A priority Critical patent/EP4491800A1/fr
Priority to JP2024108666A priority patent/JP2025013238A/ja
Priority to CN202410932049.4A priority patent/CN119308201A/zh
Priority to CN202421644186.XU priority patent/CN223134915U/zh
Priority to US18/771,328 priority patent/US20250019913A1/en
Publication of EP4491800A1 publication Critical patent/EP4491800A1/fr
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
    • 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
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • 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
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4866—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely non-vibratory or non-percussive pressing or smoothing means for consolidating or finishing
    • E01C19/4873—Apparatus designed for railless operation
    • 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
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4806—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing
    • E01C19/4826—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing the materials being aggregate mixed with binders
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/14—Extendable screeds

Definitions

  • the present invention relates to the technical field of road pavers.
  • the invention relates to road pavers with a screed for compacting paving material and to methods for controlling such road pavers.
  • the DE 19 647 150 A1 shows a method for controlling the screed height of a paving screed. From the EP 2 366 831 B1 A method for controlling the thickness and quality of bituminous paving material is known.
  • the height of the screed is recorded and adjusted using a leveling cylinder.
  • a screed lifting cylinder is usually in the floating position.
  • a constant pressure can be set on the rod side of the screed lifting cylinder.
  • the underside of the screed is inclined towards the subsoil. This inclination is called the angle of attack and is set to a predefined value at the beginning, among other things by the screed lifting cylinder.
  • the angle of attack influences the quality of the installation result, in particular the compaction of the paving material and the resulting surface appearance.
  • a constant angle of attack during operation is therefore advantageous.
  • a change in the screed height, a change in the paving speed of the road paver and/or a change in the paving material can cause a change in the angle of attack of the paving screed.
  • An angle of attack that is too large or too small can lead to a poor paving result.
  • an undesirable angle of attack can lead to different screed heights between the base screed and the extending parts, which results in unevenness across the road.
  • the angle of attack is not constant, but results from the current position of the leveling cylinder as well as the paving material properties and other environmental conditions.
  • the angle of attack is defined geometrically by the position of the leveling cylinder and the layer thickness.
  • the aim of the present invention is to keep the angle of attack of the screed as constant as possible during operation and thus to improve the paving quality.
  • the present invention can significantly improve the paving result.
  • the longitudinal evenness of the paved material can be improved by continuously monitoring and adjusting the angle of attack of the paving screed arrangement.
  • the present invention can also improve the transverse evenness of the paved material.
  • the compaction result can be improved by a constant angle of attack.
  • the process reliability can also be increased with the present invention, since no manual monitoring or manual readjustment of the angle of attack is necessary.
  • the system can automatically react to changes in the paving material, thereby reducing paving errors.
  • a first aspect of the invention relates to a road paver with a towing vehicle, at least one drawbar, a screed arrangement, a leveling cylinder, a screed lifting cylinder, a first measuring device, a second measuring device and a control device.
  • the screed arrangement is attached to a towing point of the towing vehicle via the at least one drawbar.
  • the leveling cylinder is designed to adjust a position, in particular the height, of the towing point.
  • the screed lifting cylinder is designed to adjust a contact pressure of the screed arrangement.
  • the contact pressure refers to the pressure that the screed arrangement exerts on the paving material, in particular due to its own weight.
  • the contact pressure of the screed arrangement can result from the own weight of the screed arrangement and the forces from the screed lifting cylinder.
  • the forces from the screed lifting cylinder can have a loading or relieving effect.
  • the first measuring device is designed to determine a screed height of the screed arrangement.
  • the second measuring device is designed to determine an angle of attack of the screed arrangement.
  • the control device is designed to control the leveling cylinder and the screed lifting cylinder.
  • the screed arrangement can be configured to form a road paver together with a towing vehicle.
  • the screed arrangement can be attached to the towing vehicle.
  • the screed arrangement can be configured to be pulled behind the towing vehicle in the paving direction.
  • the screed arrangement can be configured to compact paving material, in particular bituminous paving material, on a subgrade.
  • the screed arrangement can be configured to smooth paving material, in particular bituminous paving material, on a subgrade.
  • a transverse direction is defined as a direction that extends in a horizontal plane and is perpendicular to the paving direction of travel.
  • the paving direction of travel is the direction in which the paver moves during paving.
  • a lateral direction or width direction can be a direction parallel to the transverse direction.
  • the installation screed arrangement can comprise a base screed and at least one extension part, preferably two extension parts.
  • the base screed is also referred to as the main screed in the context of the invention.
  • the extension part is also referred to as the secondary screed in the context of the invention.
  • the extension parts can be arranged laterally, in the transverse direction, to the left and right of the base screed.
  • the extension parts can be arranged behind the base screed in the installation direction. Alternatively, the extension parts can be arranged in front of the base screed in the installation direction.
  • the base screed may comprise a base screed screed plate for contact with the paving material.
  • the extendable part may comprise a screed plate carrier and an extendable part screed plate.
  • the extendable part screed plate may be configured for contact with the paving material.
  • the extendable part screed plate may be attached to the screed plate carrier so as to be tiltable about a tilt axis.
  • the paving screed arrangement may comprise a height adjustment device.
  • the paving screed arrangement may comprise a tilting device.
  • the height adjustment device may be designed to lower or raise the extendable part or parts relative to the base screed.
  • the height adjustment device may be configured to lower or raise the screed plate carrier relative to the base screed.
  • the tilting device may be configured to change a tilt angle of the extendable part screed plate about the tilting axis.
  • the tilting axis may extend in the transverse direction.
  • the tilting axis may extend horizontally.
  • the screed height of the screed arrangement can refer to the vertical distance between a rear edge of the screed arrangement, in particular a rear edge of a screed plate of the screed arrangement, and a reference point, for example on the ground.
  • the screed height of the base screed can refer to the vertical distance between a rear edge of the base screed, in particular a rear edge of the base screed screed plate, and a reference point, for example on the ground.
  • the screed height of the extendable part can refer to the vertical distance between a rear edge of the extendable part, in particular a rear edge of the extendable part screed plate, and a reference point, for example on the ground.
  • the term rear edge refers to the rearmost edge of the base screed or the extendable part in the direction of installation. The height of the rear edge or the screed height determines the installation height of the installation material.
  • the angle of attack of the screed arrangement can refer to the inclination of the screed arrangement, in particular of a screed plate of the screed arrangement, relative to the slope of the subsoil.
  • the angle of attack of the screed arrangement corresponds to the absolute inclination of the screed plate.
  • absolute inclination indicates that the inclination is determined in relation to a horizontal plane.
  • the angle of attack corresponds to the Difference between the absolute inclination of the screed and the absolute inclination of the subsoil.
  • the angle of attack of the base screed can refer to the inclination of the base screed, in particular of the base screed screed plate, relative to the subsoil inclination.
  • the angle of attack of the extendable part can refer to the inclination of the extendable part, in particular of the extendable part screed plate, relative to the subsoil inclination.
  • the screed assembly can be rotatably attached to a towing point of the road finisher, in particular a towing vehicle of the road finisher, via at least one towing bar.
  • the screed assembly can be rotatably attached to the towing point of the road finisher, in particular the towing vehicle, via two towing bars.
  • the towing bars can be arranged on the side of the towing vehicle.
  • a towing bar can be arranged on each side of the towing vehicle.
  • the height of the towing point can be adjusted using a leveling cylinder.
  • the road finisher can have two towing bars and two leveling cylinders. Each leveling cylinder can be assigned to a towing bar. The leveling cylinders can be connected to the respective towing bar.
  • the connection between the leveling cylinder and the towing bar can be made directly or via an intermediate piece.
  • the leveling cylinders and the towing bars can be arranged laterally on the road finisher in relation to the transverse direction.
  • the road finisher can have a towing bar and a leveling cylinder on each of the two lateral sides.
  • the screed assembly in particular the base screed, can be connected to the towing vehicle by a screed lifting cylinder.
  • the screed assembly in particular the base screed, can be connected to the towing vehicle by two screed lifting cylinders.
  • the screed lifting cylinder or cylinders can be used to raise or lower the screed assembly vertically.
  • the screed lifting cylinder or cylinders can be used to adjust the contact pressure of the screed assembly on the paving material.
  • the road finisher can have a control device.
  • the control device can be designed to control the screed lifting cylinder.
  • the control device can be designed to control the leveling cylinder.
  • the control device can be designed to control the screed lifting cylinder and the leveling cylinder.
  • the control device can be part of the control device.
  • the control device in particular the multi-variable controller, can be designed to control the screed lifting cylinder and the leveling cylinder without taking the paving speed into account.
  • the control device can be designed to select control parameters depending on the paving speed.
  • the control device can be designed to control the screed lifting cylinder and the levelling cylinder depending on the paving speed.
  • the control device can be designed to apply a large controller gain at a high paving speed and to apply a large controller gain at a low paving speed. to apply a small controller gain.
  • the terms high, low, large and small are to be understood in relation to one another.
  • the second measuring device can have a first inclination sensor.
  • the second measuring device can have a second inclination sensor.
  • the second measuring device can have the first inclination sensor and the second inclination sensor.
  • the first inclination sensor can be arranged on the screed arrangement.
  • the second inclination sensor can be arranged on the towing vehicle.
  • the first inclination sensor can be designed to determine an inclination angle of the screed arrangement relative to a horizontal plane.
  • the second inclination sensor can be designed to determine an inclination angle of the towing vehicle relative to the horizontal plane.
  • the second measuring device can be designed to determine the angle of attack of the screed arrangement from the inclination angle of the screed arrangement and the inclination angle of the towing vehicle.
  • the first inclination sensor can be designed to determine an inclination angle of the base screed relative to a horizontal plane.
  • the first inclination sensor can be designed to determine an inclination angle of the extendable part relative to a horizontal plane.
  • the inclination angle of the towing vehicle can correspond to the inclination of the ground. Alternatively, the inclination of the ground or the inclination angle of the towing vehicle can be determined from a digital terrain model.
  • the second inclination sensor on the towing vehicle is not necessary in this case.
  • the angle of attack can be calculated based on the measured inclination angle of the first inclination sensor and the inclination of the ground determined from the terrain model.
  • the second measuring device can have an inclination sensor that is attached to the base screed or the extension part.
  • the inclination sensor can be configured to determine an inclination angle of the base screed or the extension part relative to a horizontal plane.
  • a control unit of the road paver can be designed to determine a subsoil inclination based on a digital terrain model.
  • the control unit can be designed to determine the angle of attack of the base screed based on the determined angle of inclination of the base screed and the subsoil inclination.
  • the control unit can be designed to determine the angle of attack of the extension part based on the determined angle of inclination of the extension part and the slope of the ground.
  • the second measuring device can have a rotation angle sensor.
  • the rotation angle sensor can be arranged at the towing point of the towing vehicle.
  • the rotation angle sensor can be designed to measure the inclination of the towing bar relative to the inclination of the towing vehicle.
  • the screed arrangement can be rigidly connected to the towing bar. The angle of attack of the screed arrangement can then be determined via the inclination of the towing bar.
  • the rotation angle measured at the towing point can correspond to the angle of attack.
  • the second measuring device can have a first angle of rotation sensor on a first drawbar that is attached to the side of the towing vehicle and a second angle of rotation sensor on a second drawbar that is attached to the other side of the towing vehicle.
  • the angle of attack of the screed arrangement can then be determined based on the average value of the first and second angle of rotation sensors.
  • the control device and/or the control device can be configured to filter environmental influences.
  • the control device and/or the control device can be configured to filter influences from vibration and/or temperature fluctuations.
  • advanced signal processing methods such as Kalman filters or state observers can be used.
  • the screed arrangement can have a base screed and at least one extension part.
  • the extension part can be arranged at least partially offset from the base screed in the paving direction of the road finisher.
  • the extension part can be arranged at least partially in front of or behind the base screed in the paving direction of the road finisher.
  • the extension part can be arranged completely in front of or behind the base screed in the paving direction of the road finisher.
  • the base screed and the extension part can have the same angle of attack.
  • the extension part can be arranged laterally, in relation to the transverse direction, next to the base screed.
  • the paving screed arrangement can have two extension parts.
  • the extension parts can be arranged on both sides, in relation to the transverse direction, of the base screed.
  • the extension parts can be laterally retractable and extendable so that the width of the paving screed arrangement can be varied.
  • the width of the paving screed arrangement corresponds to the extension of the paving screed arrangement in the transverse direction.
  • the extension part can have a vertical offset relative to the base screed. The vertical offset can be adjusted using the height adjustment device. Due to the geometric arrangement of the base screed and the extension part, the vertical offset is only optimal for a certain angle of attack. If the angle of attack changes, the vertical offset must be adjusted. Otherwise, the base screed and the extension part different screed heights. This can lead to impressions of the extendable part in the installed layer and unevenness in the transverse direction.
  • the installation screed arrangement can also consist of just one base screed and have no extendable parts.
  • the screed lifting cylinder can have a pressure control device on the piston side.
  • the screed lifting cylinder can be designed in such a way that it allows the screed arrangement to be relieved and loaded. This allows both too small and too large angles of attack to be corrected.
  • the control device can adjust the angle of attack if the angle of attack is too small or too large.
  • a second aspect of the invention relates to a method for controlling a position of a screed arrangement of a road finisher.
  • the screed arrangement is attached to a traction point of the road finisher, in particular by means of at least one drawbar.
  • the method comprises determining a screed height of the screed arrangement and determining an angle of attack of the screed arrangement.
  • the method further comprises adjusting the position, in particular the height, of the traction point based on the determined screed height.
  • the method further comprises adjusting a contact pressure of the screed arrangement based on the determined angle of attack.
  • Adjusting the location of the pull point may include adjusting the height, a vertical position, of the pull point.
  • the plank height can be determined continuously.
  • the plank angle can be determined continuously.
  • the plank height can be determined at the same time as the plank angle.
  • the plank height and/or the plank angle can be determined at regular intervals.
  • the position of the pulling point can be adjusted continuously.
  • the contact pressure can be adjusted continuously.
  • the position of the pulling point can be adjusted at the same time as the contact pressure.
  • the position of the pulling point and/or the contact pressure can be adjusted at regular intervals.
  • the position of the traction point can be adjusted at a different time to the contact pressure. For example, the screed height can be determined first and the position of the traction point adjusted based on this. The angle of attack can then be determined and the contact pressure adjusted based on this. The screed height can then be determined again and the position of the traction point adjusted. This iterative process can be repeated continuously.
  • the adjustment of the position, in particular the height, of the traction point can be carried out during operation of the road finisher, in particular during installation of the paving material.
  • the adjustment of the contact pressure can be carried out during operation of the road finisher, in particular during the installation of the paving material.
  • the adjustment of the position, in particular the height, of the traction point and the adjustment of the contact pressure can be carried out during operation of the road finisher, in particular during the installation of the paving material.
  • the road finisher moves in the paving direction during the installation of the paving material.
  • the adjustment of the position, in particular the height, of the traction point can be carried out automatically, in particular by a regulating device or control device.
  • the adjustment of the contact pressure can be carried out automatically, in particular by a regulating device or control device.
  • the adjustment of the position, in particular the height, of the traction point and the adjustment of the control device can be carried out automatically, in particular by a regulating device or control device.
  • the determined screed height can be fed to a regulating device or control device.
  • the determined angle of attack can be fed to a regulating device or control device.
  • the determined screed height and the determined angle of attack can be fed to a regulating device or control device.
  • the control device can have a common multi-variable controller for controlling the screed height and the angle of attack.
  • the multi-variable controller can be an H-infinity controller, an LQ controller (linear quadratic controller) or an LQG controller.
  • the control device can have two separate controllers.
  • the control device can have a first controller for controlling the screed height.
  • the control device can have a second controller for controlling the angle of attack.
  • the adjustment of the position, in particular the height, of the traction point can also be based on the determined angle of attack.
  • the adjustment of the contact pressure of the screed arrangement can also be based on the determined screed height.
  • the position, in particular the height, of the traction point can be adjusted using a leveling cylinder, in particular two leveling cylinders.
  • the leveling cylinder can be attached to the towing vehicle of the road paver and to the traction point.
  • the position of the traction point can be changed by extending and retracting the leveling cylinder.
  • the screed arrangement can be attached to the traction point using a towing bar, in particular two towing bars. The screed height of the screed arrangement can thus be changed by extending and retracting the leveling cylinder or the leveling cylinders.
  • the contact pressure of the screed arrangement can be adjusted using a screed lifting cylinder, in particular two screed lifting cylinders.
  • the screed lifting cylinder can be attached to the screed arrangement and to the towing vehicle of the road finisher.
  • the pressure on the screed arrangement can be varied by extending and retracting the screed lifting cylinder.
  • a pressure control valve can be used to a pressure in the screed lifting cylinder can be set, in particular regulated.
  • the screed lifting cylinder can have a rod side and a piston side.
  • a pressure can be set, in particular regulated, on the rod side of the screed lifting cylinder using the pressure control valve.
  • the pressure on the screed arrangement can be varied using the screed lifting cylinder.
  • the pressure on the screed arrangement can be varied using the pressure control valve.
  • the screed lifting cylinder can be designed to relieve the load on the screed arrangement and/or to place additional load on it.
  • the angle of attack of the screed arrangement can be adjusted by extending and retracting the screed lifting cylinder or screed lifting cylinders. A higher contact pressure can lead to a larger angle of attack. A lower contact pressure can lead to a smaller angle of attack.
  • the screed lifting cylinder can have a pressure control mechanism on the piston side.
  • the pressure control mechanism on the piston side can increase the angle of attack.
  • a third aspect of the invention relates to the use of a control device for controlling an angle of attack of a screed arrangement of a road paver and for controlling a screed height of the screed arrangement.
  • the control device can be designed to control the angle of attack and the screed height during operation of the road finisher, in particular during the installation of the paving material.
  • the control can be automatic.
  • the control can be continuous.
  • the control can be at regular intervals.
  • the control device can be designed to receive and process measured values from a first measuring device that determines the screed height and measured values from a second measuring device that determines the angle of attack.
  • the control device can carry out the control based on the transmitted measured values of the screed height and the angle of attack.
  • the control device can be designed to control a leveling cylinder, in particular two leveling cylinders.
  • the leveling cylinder can change the position, in particular the height, of a drawbar connected to the screed arrangement.
  • the control device can be designed to change the screed height by controlling the leveling cylinder.
  • the control device can be designed to control a screed lifting cylinder, in particular two screed lifting cylinders.
  • the screed lifting cylinder can change the contact pressure of the screed arrangement on the paving material.
  • the contact pressure can be used to adjust the angle of attack of the screed arrangement.
  • the control device can be designed to control the contact pressure of the
  • the control device can be designed to change the angle of attack of the screed arrangement by controlling the screed lifting cylinder, in particular the screed lifting cylinder.
  • the control device can have a multi-variable controller.
  • the multi-variable controller can be used to control the angle of attack of the screed arrangement and to control the screed height of the screed arrangement.
  • the multi-variable controller can be designed to use the determined angle of attack and the determined screed height as input parameters.
  • the multi-variable controller can be designed to control the leveling cylinder, in particular the leveling cylinder, and the screed lifting cylinder, in particular the screed lifting cylinder, in particular based on the determined screed height and the determined angle of attack.
  • the control device can have a first controller and a second controller.
  • the first controller can be used to control the screed height of the screed arrangement.
  • the second controller can be used to control the angle of attack of the screed arrangement.
  • the first controller can be used to control the leveling cylinder, in particular the leveling cylinder.
  • the second controller can be used to control the screed lifting cylinder, in particular the screed lifting cylinder.
  • Fig. 2 shows a top view of a road paver 1 according to an embodiment of the invention.
  • the drawbars 4 are arranged on the side of the towing vehicle 2.
  • the screed arrangement 3 comprises a base screed 11 and two extension parts 12.
  • the extension parts 12 are arranged behind the base screed 11 in the paving direction 100. Alternatively, the extension parts 12 can be arranged in front of the base screed 11 in the paving direction 100.
  • the extension parts 12 are arranged laterally next to the base screed 11 in the transverse direction 200.
  • the extension parts 12 can be extended and retracted in the transverse direction 200 so that the width of the screed arrangement 3 changes.
  • the width of the screed arrangement 3 is the extension of the screed arrangement 3 in the transverse direction 200.
  • the width of the screed arrangement can be increased by mounting widening parts on the extension parts.
  • Fig. 3 shows a schematic side view of the screed arrangement 3 and the drawbar 4 in a first installation situation on a level surface 13.
  • the extension part 12 is arranged behind the base screed 11 in the installation direction 100.
  • the extension part 12 and the base screed 11 have the same angle of attack 14.
  • the dashed line represents the desired installation height 15 of the finished installation material.
  • the base screed 11 and the extension part 12 are arranged offset in the vertical direction.
  • the vertical offset 16 between the base screed 11 and the extension part 12 is set so that the extension part height 18 corresponds to the base screed height 17. This is usually set manually before installation.
  • Fig. 4 shows the screed arrangement 3 and the drawbar 4 in a second installation situation.
  • the pulling point 5 is higher.
  • the angles of attack 14 of the base screed 11 and the extension part 12 are still identical.
  • the base screed height 17 corresponds to the desired installation height 15. Due to the fact that the extendable part 12 is arranged behind the base screed 11 in the installation direction 100, the rear edge of the extendable part 12 sinks further than the rear edge of the base screed 11. Accordingly, the extendable part height 18 is smaller than the base screed height 17. This leads to unevenness of the finished installation material in the transverse direction.
  • Fig. 5 shows the screed arrangement 3 and the drawbar 4 in a third installation situation.
  • the subsoil 13 has a subsoil inclination 19.
  • a leveling cylinder 8 is mounted, which adjusts the position of the drawbar 5.
  • a screed lifting cylinder 10 is mounted, which adjusts the contact pressure of the screed arrangement 3 on the paving material.
  • the base screed height 17 corresponds to the desired installation height 15.
  • the base screed 11 has an absolute base screed inclination 20.
  • the absolute base screed inclination 20 is the inclination of the base screed 11 in relation to a horizontal plane.
  • the angle of attack 14 of the Base pile 11 is calculated from the absolute base pile inclination 20 minus the subsoil inclination 19.
  • Fig. 6 shows a control circuit known from the prior art with a control device 50 for controlling the position of a screed arrangement 3.
  • the screed transmission behavior 51 is influenced by the screed lifting cylinder pressure 52, the subsoil height 53 and the leveling cylinder position 54.
  • the screed lifting cylinder pressure 52 and the subsoil height 53 represent external input parameters.
  • a further input parameter is the desired installation height 15.
  • Based on the screed lifting cylinder pressure 52, the subsoil height 53 and the leveling cylinder position 54, a screed height 55 and an angle of attack 14 are set.
  • the screed height 55 is measured by means of a measuring device 56 and transmitted to a controller 57.
  • the controller 57 compares the desired installation height 15 with the measured screed height 55 and, if necessary, causes a change in the leveling cylinder position 54. The controller 57 only reacts to a change in the screed height 55. There is no reaction to a change in the angle of attack 14.
  • Fig. 7 shows a control circuit according to an embodiment of the present invention with a control device 50 for controlling the position of a screed arrangement 3.
  • the screed transmission behavior 51 is, analogous to Fig. 6 , influenced by the screed lifting cylinder pressure 52, the ground level 53 and the leveling cylinder position 54.
  • the subsoil height 53 is an external input parameter.
  • the desired installation height 15 and the desired angle of attack 58 are specified as target values.
  • the target value for the installation height 15 and/or the target value for the angle of attack 58 can be specified by manual user input.
  • the target value for the installation height 15 and/or the target value for the angle of attack 58 can be specified or suggested by a control system, in particular depending on the installation material.
  • the target value for the installation height 15 and/or the target value for the angle of attack 58 can be determined based on stored values from previous construction measures. Based on the screed lifting cylinder pressure 52, the subsoil height 53 and the leveling cylinder position 54, a screed height 55 and an angle of attack 14 of the screed arrangement 3 are set.
  • the screed height 55 of the screed arrangement 3 is measured by means of a first measuring device 59 and transmitted to a first controller 60.
  • the first controller 60 compares the desired installation height 15 with the measured screed height 55 and, if necessary, causes a change in the leveling cylinder position 54.
  • the angle of attack 14 of the screed arrangement 3 is measured by means of a second measuring device 61 and transmitted to a second controller 62.
  • the second controller 62 compares the desired angle of attack 58 with the measured angle of attack 14 and, if necessary, causes a Change in the screed lifting cylinder pressure 52.
  • the first controller 60 reacts to a change in the screed height 55 and the second controller 62 reacts to a change in the angle of attack 14.
  • Fig. 8 shows a control circuit according to a further embodiment of the present invention with a control device 50 for controlling the position of a screed arrangement 3.
  • the control loop shown in the figure shows the control loop in Fig. 8 only a first measuring device 59.
  • the first measuring device 59 measures the screed height 55 of the screed arrangement 3 and transmits this to the first controller 60 and the second controller 62.
  • the first controller 60 compares the desired installation height 15 with the measured screed height 55 and, if necessary, causes a change in the leveling cylinder position 54.
  • the second controller 62 compares the desired installation height 15 with the measured screed height 55 and, if necessary, causes a change in the screed lifting cylinder pressure 52.
  • Fig. 9 shows a control circuit according to a further embodiment of the present invention with a control device 50 for controlling the position of a screed arrangement 3.
  • the control loop shown in the figure shows the control loop in Fig. 9 a multi-variable controller 63.
  • the first measuring device 59 measures the screed height 55 of the screed arrangement 3 and transmits this to the multi-variable controller 63.
  • the second measuring device 61 measures the angle of attack 14 of the screed arrangement 3 and transmits this to the multi-variable controller 63.
  • the multi-variable controller 63 compares the desired installation height 15 with the measured screed height 55 and calculates a control deviation of the screed height from this.
  • the multi-variable controller 63 compares the desired angle of attack 58 with the measured angle of attack 14 and calculates a control deviation of the angle of attack from this. Based on the control deviation of the screed height and the control deviation of the angle of attack, the multi-variable controller 63 causes a change in the screed lifting cylinder pressure 52 and the leveling cylinder position 54 if necessary.
  • the multi-variable controller 63 can be a MIMO controller (multiple input multiple output controller).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP23185510.7A 2023-07-14 2023-07-14 Finisseuse de route dotée d'un réglage de poutre lisseuse Pending EP4491800A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP23185510.7A EP4491800A1 (fr) 2023-07-14 2023-07-14 Finisseuse de route dotée d'un réglage de poutre lisseuse
JP2024108666A JP2025013238A (ja) 2023-07-14 2024-07-05 スクリードの調高フィードバック制御を備える道路舗装機
CN202410932049.4A CN119308201A (zh) 2023-07-14 2024-07-12 具有熨平板调平反馈控制的道路摊铺机
CN202421644186.XU CN223134915U (zh) 2023-07-14 2024-07-12 道路摊铺机
US18/771,328 US20250019913A1 (en) 2023-07-14 2024-07-12 Road paver with leveling feedback control for a screed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23185510.7A EP4491800A1 (fr) 2023-07-14 2023-07-14 Finisseuse de route dotée d'un réglage de poutre lisseuse

Publications (1)

Publication Number Publication Date
EP4491800A1 true EP4491800A1 (fr) 2025-01-15

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EP23185510.7A Pending EP4491800A1 (fr) 2023-07-14 2023-07-14 Finisseuse de route dotée d'un réglage de poutre lisseuse

Country Status (4)

Country Link
US (1) US20250019913A1 (fr)
EP (1) EP4491800A1 (fr)
JP (1) JP2025013238A (fr)
CN (2) CN119308201A (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19647150A1 (de) 1996-11-14 1998-05-28 Moba Mobile Automation Gmbh Vorrichtung und Verfahren zum Steuern der Einbauhöhe eines Straßenfertigers
DE10025462A1 (de) * 2000-05-23 2001-12-06 Moba Mobile Automation Gmbh Schichtdickenbestimmung unter Verwendung eines Neigungssensors
US20140186115A1 (en) * 2012-12-27 2014-07-03 Caterpillar Paving Products Inc. Paving Machine with Automatically Adjusting Paver Tractor and Screed
EP2366831B1 (fr) 2010-03-18 2014-12-24 Joseph Vögele AG Procédé de commande du procédé lors de la application d'un revêtement routier et finisseuse de route
DE102021107447A1 (de) 2020-03-27 2021-09-30 Caterpillar Paving Products Inc. Verfahren und systeme zum bestimmen eines anstellwinkels und einer querneigung eines fertigers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19647150A1 (de) 1996-11-14 1998-05-28 Moba Mobile Automation Gmbh Vorrichtung und Verfahren zum Steuern der Einbauhöhe eines Straßenfertigers
DE10025462A1 (de) * 2000-05-23 2001-12-06 Moba Mobile Automation Gmbh Schichtdickenbestimmung unter Verwendung eines Neigungssensors
EP2366831B1 (fr) 2010-03-18 2014-12-24 Joseph Vögele AG Procédé de commande du procédé lors de la application d'un revêtement routier et finisseuse de route
US20140186115A1 (en) * 2012-12-27 2014-07-03 Caterpillar Paving Products Inc. Paving Machine with Automatically Adjusting Paver Tractor and Screed
DE102021107447A1 (de) 2020-03-27 2021-09-30 Caterpillar Paving Products Inc. Verfahren und systeme zum bestimmen eines anstellwinkels und einer querneigung eines fertigers

Also Published As

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CN223134915U (zh) 2025-07-22
CN119308201A (zh) 2025-01-14
JP2025013238A (ja) 2025-01-24
US20250019913A1 (en) 2025-01-16

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