EP4029992A1 - Finisseur de route et procédé de réglage de la course de dameur - Google Patents

Finisseur de route et procédé de réglage de la course de dameur Download PDF

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Publication number
EP4029992A1
EP4029992A1 EP21151612.5A EP21151612A EP4029992A1 EP 4029992 A1 EP4029992 A1 EP 4029992A1 EP 21151612 A EP21151612 A EP 21151612A EP 4029992 A1 EP4029992 A1 EP 4029992A1
Authority
EP
European Patent Office
Prior art keywords
eccentric shaft
road finisher
adjustment
eccentric
adjusting
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.)
Granted
Application number
EP21151612.5A
Other languages
German (de)
English (en)
Other versions
EP4029992B1 (fr
Inventor
Klaus Bertz
Ralf Weiser
Tobias Noll
Christian Pawlik
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 PL21151612.5T priority Critical patent/PL4029992T3/pl
Priority to EP21151612.5A priority patent/EP4029992B1/fr
Priority to JP2022000939A priority patent/JP2022109229A/ja
Priority to BR102022000695-4A priority patent/BR102022000695A2/pt
Priority to US17/575,745 priority patent/US20220220674A1/en
Priority to CN202220129875.1U priority patent/CN216973050U/zh
Priority to CN202210056316.7A priority patent/CN114763692B/zh
Publication of EP4029992A1 publication Critical patent/EP4029992A1/fr
Application granted granted Critical
Publication of EP4029992B1 publication Critical patent/EP4029992B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E01C19/22—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 consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
    • 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
    • E01C19/4833—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 tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/162—Making use of masses with adjustable amount of eccentricity
    • 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
    • E01C19/4833—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 tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
    • E01C19/4853—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements
    • 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
    • E01C19/4833—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 tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
    • E01C19/4853—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements
    • E01C19/486—Apparatus designed for railless operation, e.g. crawler-mounted, provided with portable trackway arrangements with non-vibratory or non-percussive pressing or smoothing means; with supplemental elements penetrating the paving to work the material thereof
    • 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

Definitions

  • the present invention relates to a road finisher according to claim 1 and a method for stepless tamper stroke adjustment on a road finisher according to claim 15.
  • EP 3 138 961 B1 discloses a road finisher whose screed has a tamper stroke adjustment device.
  • the tamper stroke adjustment device has an adjustment gear that is provided between an eccentric shaft that can be driven in rotation and an eccentric bushing that is rotatably mounted on the eccentric shaft. The stroke of the tamper bar is adjusted by twisting the eccentric bushing on the eccentric shaft.
  • EP 3 138 961 B1 also discloses an adjusting gear that is provided between the rotationally drivable eccentric shaft and an eccentric bushing mounted in a rotationally fixed manner on the eccentric shaft, the eccentric bushing being displaced transversely to the eccentric shaft via the adjusting gear to adjust the tamper stroke of the tamper strip.
  • EP 3 138 961 B1 a variator having a toggle mechanism.
  • adjusting the eccentric stroke during operation of the road finisher represents a technical challenge. This is due in particular to the fact that it is difficult to control or operate the adjusting gear that is mounted directly on the eccentric shaft, between the eccentric bushing and the eccentric shaft.
  • the toggle lever mechanism is structurally rather complex and takes up a lot of space on the screed.
  • US 8,371,770 B1 discloses a screed with a tamper stroke adjustment device, which has a threaded rod and a threaded bushing mounted displaceably thereon. An axial adjustment of the threaded bushing along the threaded rod moves a lever arm mounted on the threaded bushing, the position and alignment of which is dependent on the tamper stroke setting on the screed of the road finisher.
  • EP 1 905 899 A2 discloses a screed for a road finisher, on which a tamper stroke adjustment device is mounted.
  • the tamper stroke adjustment device comprises a bearing block for an eccentric shaft, which is mounted so that it can be displaced horizontally along a guide carriage and on which an eccentric bushing is mounted in a rotationally fixed manner.
  • EP 2 599 918 A1 discloses a method and a device for adjusting an upper deflection point of a tamper bar of a road finisher.
  • EP 2 599 919 A1 discloses another device for adjusting the stroke of a tamper bar of a road finisher.
  • the object of the invention is to provide a road finisher with a tamper stroke adjustment device and a method for stepless tamper stroke adjustment on a road finisher, whereby the tamper stroke can be adjusted precisely and steplessly, above all, using simple constructive technical means, in particular using fewer assemblies in a compact design during paving operation of the road finisher.
  • the invention relates to a road finisher with a screed for producing a paving layer, wherein the screed has at least one compacting unit for pre-compacting a paving material fed to the screed, and wherein the compacting unit comprises at least one eccentric bushing, which is rotatably mounted at a desired angle of rotation on an eccentric shaft carrying it , in order thereby to steplessly set a desired tamper stroke of a tamper strip of the compression unit.
  • the compression unit has at least one adjustment mechanism for rotating the eccentric bush, i.e. for adjusting the tamper stroke.
  • the adjustment mechanism has an adjustment drive which is mounted on the eccentric shaft and rotates with the eccentric shaft.
  • the adjusting drive is positioned directly on the eccentric shaft in the invention, i.e. the eccentric shaft is used as a carrier for the adjusting drive, results overall in a compact design for the compression unit, which allows a tamper stroke adjustment using fewer assemblies and with little effort the screed of the road finisher allows.
  • the eccentric bushing and the adjustment drive provided for this are positioned together on the eccentric shaft. Both thus rotate during operation at the speed of the eccentric shaft.
  • the adjusting drive can twist the eccentric bushing relative to the eccentric shaft, ie vary the angle of rotation between these components, which means that the tamper stroke can be adjusted accordingly on the compression unit.
  • the twisting of the eccentric bushing on the rotationally driven eccentric shaft takes place in response to a phase adjustment, which is carried out by means of the adjustment drive, which itself rotates on the eccentric shaft, with which the target tamper stroke on the screed can be set.
  • the phase adjustment is advantageously controllable, in particular at low speed and with little effort, by means of the adjustment drive which is rotatably mounted on the eccentric shaft and rotates specifically with the speed of the eccentric shaft.
  • the phase of the rotating adjustment drive can be adjusted at least temporarily in such a way that - viewed from the outside - it increases or decreases the speed of the eccentric shaft supporting it in such a way that a relative rotation of the eccentric bushing coupled to it occurs the eccentric shaft comes about.
  • the eccentric bushing which is coupled to the adjusting drive and rotates on the eccentric shaft, can be "braked” or "accelerated” relative to the rotational movement of the eccentric shaft in accordance with the phase adjustment controlled by means of the adjusting drive, as a result of which the eccentric bushing rotates into a new angular position relative to the eccentric shaft.
  • the tamper stroke can be adjusted by turning the eccentric bushing on the eccentric shaft. Without a separate control of the adjustment drive rotating along with the eccentric shaft, the eccentric bush rotates at the same speed as the eccentric shaft, i.e. together with it with the same tamper stroke.
  • co-rotating means that the adjustment drive rotates together with the eccentric shaft due to its direct position on the eccentric shaft.
  • the adjustment drive for turning the eccentric bushing can thus be phase-adjusted sensitively, in particular by means of short adjustment paths and with little effort, i.e. in a structurally simple manner relative to the rotary movement of the eccentric shaft, i.e. a change in the angular position of the eccentric bushing positioned on the eccentric shaft can be controlled, so that the tamper stroke of the tamper bar changes of the compression unit can be changed.
  • the adjustment mechanism has an adjustment gear that is mounted on the eccentric shaft and can be driven by the adjustment drive.
  • the adjusting gear can be connected to the eccentric bushing directly or via a clutch.
  • the adjusting gear can be a separately designed subassembly connected to the adjusting drive or can be integrated into the adjusting drive.
  • the adjusting drive and the adjusting gear form a functional unit which is mounted on the eccentric shaft and rotates along with the rotational movement of the eccentric shaft.
  • the co-rotating functional unit produced in this way is compact and can be used excellently on the eccentric shaft for adjusting the tamper stroke.
  • the functional unit thus provided can be arranged as such along the eccentric shaft directly next to the eccentric bushing or at least at a very small distance from it, which improves a compact design.
  • such a functional unit can be repaired in a simple manner without the eccentric bushing having to be removed from the eccentric shaft.
  • an advantageous embodiment provides that the adjustment mechanism, in particular the functional unit described in the previous section, is arranged within a housing running around the eccentric shaft.
  • the adjustment mechanism is available as a compact and well-protected module on the eccentric shaft and is therefore predestined for use in tight spaces directly at the location of the tamper stroke adjustment.
  • the housing protects the adjustment mechanism mounted on the eccentric shaft from bituminous vapors that rise in front of the screed, i.e. from a space in the transverse distributor.
  • the housing is in the form of a hollow cylinder or a ring.
  • the hollow-cylindrical or ring-shaped housing is preferably mounted concentrically to the axis of rotation of the eccentric shaft and non-rotatably on the latter.
  • the housing can be designed in two parts so that it can be removed from the eccentric shaft without any problems for better accessibility of the adjustment mechanism accommodated therein.
  • the adjusting drive can be arranged centrically or eccentrically on the eccentric shaft.
  • the adjusting mechanism is preferably connected to the eccentric bushing directly or by means of a form-fitting coupling.
  • the desired tamper stroke adjustment preferably comes about as the sum of the individual eccentricities formed on the eccentric shaft and on the eccentric bushing mounted thereon.
  • the eccentric bushing can be arranged in a rotatable manner on an eccentric area of the eccentric shaft.
  • the adjusting drive is preferably also seated on the eccentric area of the eccentric shaft, i.e. it is arranged eccentrically on it so that it can be coupled directly to the eccentric bushing. This results in a very compact installation space.
  • the adjusting drive is mounted on a central area of the eccentric shaft, ie not on its eccentric area.
  • the adjustment can by means of a form-fitting clutch, for example by means of a Claw clutch, offset to him, be connected to the eccentric bushing mounted on the eccentric area of the eccentric shaft. An imbalance on the adjustment drive and pivot bearing of the eccentric shaft can thus be better avoided during the rotation of the eccentric shaft.
  • the adjustment drive can preferably be actuated hydraulically, electrically and/or mechanically. As such a drive unit, it can be positioned in a compact design, correctly directly on the eccentric shaft and at a small distance from the eccentric bushing.
  • the adjustment drive it is possible for the adjustment drive to have an essentially ring-shaped structure. It can thus be arranged concentrically to the axis of rotation of the eccentric shaft. In other words, it can thus be slid onto the eccentric shaft, designed to run around it and assume a non-rotatable position on it.
  • Such an adjusting drive can be excellently arranged within the surrounding housing, especially when it has a shape that essentially matches the latter.
  • the co-rotating adjustment drive is preferably designed as an electromechanical phase adjuster, for example as a servo motor. It can therefore react quickly and very precisely, and as such can be slightly influenced by other process variables, for example unit temperatures. It would be conceivable that the adjustment drive is a phase adjuster that can be driven by means of a slip ring unit arranged on the eccentric shaft and/or by means of an induction unit assigned to the eccentric shaft, at the output of which a phase adjustment can be set.
  • An adjustment drive which is present as a servo motor on the eccentric shaft, can be equipped in particular with a sensor for determining the position of the motor shaft.
  • the rotational position of the motor shaft determined by the sensor i.e. the phase adjustment, is preferably continuously transmitted to control electronics, which regulates the movement of the servomotor in accordance with one or more adjustable target tamper strokes in a control circuit.
  • the adjustment drive can be arranged as a hydraulically controllable phase adjuster on the eccentric shaft, which can be pressurized by means of a hydraulic fluid, for example via the eccentric shaft, in particular via a hydraulic channel formed therein, in order to carry out a desired phase adjustment and to adjust the angle of rotation to the pass on the eccentric bush.
  • a hydraulic fluid for example via the eccentric shaft, in particular via a hydraulic channel formed therein, in order to carry out a desired phase adjustment and to adjust the angle of rotation to the pass on the eccentric bush.
  • the eccentric shaft itself forms a hydraulic supply line for the adjustment drive, a particularly compact design would result. It would be conceivable here for the hydraulic adjusting drive to be connected to a hydraulic system which is already provided on the screed.
  • the compression unit preferably has a plurality of unit sections that can be adjusted independently of one another, with an adjustment mechanism being provided for each of the unit sections. These can be designed so that they can be controlled independently of one another, so that different tamper strokes can be set on the respective unit sections. It is conceivable that an adjustment mechanism is provided for each unit section for each eccentric bushing mounted rotatably on the eccentric shaft, the adjustment drive of which is positioned on the eccentric shaft so as to rotate with it.
  • the respective eccentric bushings perform a desired rotation on the eccentric shaft at the same time, so that the same tamper stroke can be set on all sections of the unit.
  • all adjustment mechanisms mounted on the eccentric shaft can be controlled at the same time to carry out a phase adjustment.
  • a mechanical coupling of several eccentric bushings would also be conceivable for this.
  • the adjustment mechanism has at least one accumulator for supplying energy to the adjustment drive.
  • the accumulator can be stored inside the housing.
  • the accumulator can be charged by means of a rotary movement of the eccentric shaft, for example by means of a sliding contact and/or on the basis of inductive charging. This could result in the accumulator being reliably available to the adjusting drive as a fully charged energy store.
  • the accumulator essentially forms a ring-shaped unit that is mounted circumferentially on the eccentric shaft and, if necessary, is arranged inside the housing like the adjustment drive.
  • the adjustment mechanism for the adjustment drive preferably comprises at least one contact-related power and/or signal transmission unit, for example a slip ring unit.
  • a slip ring unit This can be mounted directly on the eccentric shaft, in particular within the rotating housing.
  • the slip ring unit is preferably designed for bidirectional signal transmission, which makes it easier to automate the adjustment mechanism.
  • a preferred variant provides that the adjusting mechanism for the adjusting drive rotating along with it on the eccentric shaft provides a contactless power and/or signal transmission unit.
  • power and/or signal transmission based on induction would be conceivable.
  • An inductive power and/or signal transmission unit could be provided directly on the eccentric shaft.
  • a bidirectional signal transmission function would also be advantageous here for automated operation.
  • the adjusting drive seated on the eccentric shaft can be connected to a generator of the road finisher as a consumer.
  • the adjustment mechanism could provide at least one accumulator as an intermediate store, primarily inside the housing, in order to buffer the adjustment energy provided by the generator for the adjustment drive, for example a servo motor.
  • the adjustment mechanism for setting the desired tamper stroke is connected to a control device.
  • the control device can receive the setpoint tamper stroke to be set from another control device of the road finisher or calculate it itself.
  • the control device can be connected to the adjustment drive by means of the signal transmission unit. It would be conceivable that the other control device, which derives the setpoint tamper stroke, is functionally connected via the signal transmission unit to the control device, which is itself positioned within the housing, i.e. is mounted rotating with the eccentric shaft. This also favors the integral, modular design of the adjustment mechanism.
  • the adjusting mechanism preferably has at least one sensor unit for detecting the angle of rotation set between the eccentric bushing and the eccentric shaft.
  • the sensor unit could, for example, be an angle detection sensor attached directly to the adjustment drive, for example an angle detection sensor, which can be used to measure the phase adjustment carried out by means of the adjustment drive.
  • An actual tamper stroke which is available to the control device for a target/actual comparison, could be calculated from a detected angle of rotation, in particular by means of the control device.
  • the control device could be equipped with electronic controllers, by means of which a continuous tamper stroke adjustment can be carried out.
  • control device for dynamic adjustment of the angle of rotation of the eccentric bushing has at least one control loop that responds to at least one process parameter that can be detected during operation of the road finisher.
  • a measured material-specific value of the paving material to be paved for example a measured temperature of the paving material transported from the goods bunker of the road finisher to the paving screed, and/or the paving layer produced, for example a measured temperature of the paving layer, be reacted accordingly with an adjustment of the angle of rotation between the eccentric bushing and the eccentric shaft in order to produce an optimal installation result.
  • a preferred embodiment of the invention provides that the control circuit is able to control a dynamic angle of rotation adjustment between the eccentric bushing and the eccentric shaft in response to a disturbance variable, for example an ambient temperature, for the continuous adjustment of the tamper stroke.
  • a disturbance variable for example an ambient temperature
  • the sensor unit of the adjustment mechanism could have at least one distance sensor, which is designed to directly measure a set actual tamper stroke of the tamper strip.
  • a practical variant provides that the adjustment mechanism is designed to be manually adjustable. Above all, this can be helpful for calibrating the tamper strip at the beginning of the paving journey. Automated operation of the adjustment mechanism, on the other hand, can be used excellently during the paving journey.
  • the invention relates to a method for stepless adjustment of the tamper stroke on a compaction unit of a road finisher, wherein at least one eccentric bushing is rotated on an eccentric shaft that supports it in order to adjust the tamper stroke.
  • an adjusting drive which is mounted on the eccentric shaft and rotates with the eccentric shaft is controlled in order to rotate the eccentric bushing.
  • the adjustment drive itself is mounted directly on the eccentric shaft and is non-rotatably connected to it, ie viewed as such rotates at its speed, a corresponding phase adjustment can be carried out precisely with little effort to change the tamper stroke. Since the adjustment drive is connected to the eccentric shaft in a rotationally fixed manner, only a low speed and a correspondingly low torque of the adjustment drive are required to generate the phase adjustment. Furthermore, the inventive method offers the Possibility of a compact design of the components used for the tamper stroke adjustment on the screed of the road finisher.
  • the screed 2 has at least one compacting unit 4 for pre-compacting paving material 5 fed to the screed 2.
  • the compacting unit 4 has a tamper strip 6, which has a variable tamper stroke H and/or a variable frequency F for pre-compacting the paving material 5 fed to the screed 2.
  • the compacting unit 4 has a bearing block 7 fastened to the screed body and an eccentric shaft 8 which is rotatably mounted thereon.
  • the eccentric shaft 8 drives a connecting rod 9 to which the tamper strip 6 is fastened.
  • FIG. 1 also shows an adjusting mechanism 10 which is positioned in a rotationally fixed manner on the eccentric shaft 8, ie rotates together with it.
  • the adjusting mechanism 10 can be controlled to set a target tamper stroke 11 that can be varied for the tamper strip 6 .
  • an eccentric bushing 12 coupled to the latter and rotatably mounted on the eccentric shaft 8, which is positioned on the eccentric shaft 8 next to the adjusting mechanism 10, can be rotated.
  • the housing 13 is in 2 designed in the form of a hollow cylinder and positioned concentrically to the eccentric shaft 8 .
  • the housing 13 is rotationally fixed on the eccentric shaft 8 and may be made of a signal transmissive material in particular to allow components housed therein to better receive and transmit electrical signals.
  • the housing 13 can be designed to accommodate all functional units of the adjustment mechanism 10 .
  • Figure 2A shows the compression unit 4 in a schematic representation 2 according to a first variant.
  • a drive 14, for example a hydraulic or electric motor, is provided for rotating the eccentric shaft 8.
  • the adjusting mechanism 10 has an adjusting drive 15 which is mounted on the eccentric shaft 8 and co-rotates at a speed of the eccentric shaft 8 .
  • the adjusting drive 15 is positioned on an eccentric area 16 of the eccentric shaft 8 .
  • the adjusting drive 15 is connected to an adjusting gear 17 .
  • the adjusting drive 15 is coupled via the adjusting gear 17 to the eccentric bushing 12 , which is also positioned on the eccentric area 16 of the eccentric shaft 8 .
  • a rotation angle ⁇ of the eccentric bushing 12 positioned on the eccentric area 16 can be changed by controlling the adjusting drive 15 in order to set the target tamper stroke 11 for the tamper strip 6 .
  • a control device 31 and a power source 18 are functionally connected to the eccentric shaft 8 .
  • the adjusting drive 15 could also be supplied with energy by means of an accumulator 30 . This can be provided as a primary energy source or as an energy buffer between the power source 18 and the adjusting drive 15 .
  • the adjusting drive 15 has a sensor unit 19 for detecting the set angle of rotation ⁇ between the eccentric bushing 12 and the eccentric shaft 8 .
  • the control device 31 can be designed for bidirectional signal transmission. The control device 31 is thus designed to transmit signals to the adjustment drive 15 and also to receive signals that are emitted by the adjustment drive 15 , for example to receive measurement signals from the sensor unit 19 .
  • the power transmission and/or signal transmission can be carried out by means of a power and/or signal transmission unit 20 .
  • a power and/or signal transmission unit 20 This can be in the form of a sliding contact unit or alternatively in the form of an induction unit.
  • FIG. 2A shows Figure 2A that the control device 31 of the target tamper stroke 11 is available, so that a control of the adjustment drive 15 accordingly by means of the control device 31 via the signal transmission unit 20 can be implemented.
  • the adjusting drive 15 can be used to carry out a phase adjustment, which can be transmitted to the eccentric bushing 12 via the adjusting gear 17, so that the desired angle of rotation ⁇ relative to the eccentric shaft 8 results.
  • FIG. 2B shows an alternative variant of the adjusting mechanism 10.
  • the adjusting drive 15 is mounted on a central area 21 of the eccentric shaft 8.
  • the adjusting mechanism 10 provides a positive coupling 22 .
  • Activation of the adjusting drive 15 via the adjusting gear 17 causes the positive coupling 22, for example a claw coupling, to transmit an adjusting torque to the eccentric bushing 12 in such a way that it is phase-shifted on the eccentric shaft 8 in order to set the target tamper stroke 11.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Machines (AREA)
EP21151612.5A 2021-01-14 2021-01-14 Finisseur de route et procédé de réglage de la course de dameur Active EP4029992B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PL21151612.5T PL4029992T3 (pl) 2021-01-14 2021-01-14 Wykańczarka i sposób przestawiania skoku ubijaka
EP21151612.5A EP4029992B1 (fr) 2021-01-14 2021-01-14 Finisseur de route et procédé de réglage de la course de dameur
JP2022000939A JP2022109229A (ja) 2021-01-14 2022-01-06 タンパストローク調整
BR102022000695-4A BR102022000695A2 (pt) 2021-01-14 2022-01-13 Máquina de acabamento de rodovia com ajuste de curso de pavimentação e método para um ajuste de curso de pavimentação
US17/575,745 US20220220674A1 (en) 2021-01-14 2022-01-14 Tamper stroke adjustment
CN202220129875.1U CN216973050U (zh) 2021-01-14 2022-01-14 道路整修机
CN202210056316.7A CN114763692B (zh) 2021-01-14 2022-01-14 夯击行程调节

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EP4029992B1 (fr) * 2021-01-14 2023-03-29 Joseph Vögele AG Finisseur de route et procédé de réglage de la course de dameur
PL4029991T3 (pl) 2021-01-14 2023-09-18 Joseph Vögele AG Regulacja skoku ubijaka

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US8371770B1 (en) 2012-04-09 2013-02-12 Caterpillar Inc. Apparatus for tamping paving material
EP2599918A1 (fr) 2011-12-01 2013-06-05 BOMAG GmbH Procédé et dispositif de réglage des amplitudes d'une barre de dame d'une finisseuse de route
EP2599919A1 (fr) 2011-12-01 2013-06-05 BOMAG GmbH Dispositif de réglage du levage d'une barre de compactage d'un finisseur de route
EP3249101A1 (fr) * 2016-05-23 2017-11-29 Caterpillar Paving Products Inc. Dispositif de damage lissoir d'une finisseuse
EP3138961B1 (fr) 2009-11-20 2018-08-22 Joseph Vögele AG Poutre lisseuse

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EP1905899A2 (fr) 2006-09-28 2008-04-02 Dynapac GmbH Poutre dameuse pour finisseuse
EP3138961B1 (fr) 2009-11-20 2018-08-22 Joseph Vögele AG Poutre lisseuse
EP2599918A1 (fr) 2011-12-01 2013-06-05 BOMAG GmbH Procédé et dispositif de réglage des amplitudes d'une barre de dame d'une finisseuse de route
EP2599919A1 (fr) 2011-12-01 2013-06-05 BOMAG GmbH Dispositif de réglage du levage d'une barre de compactage d'un finisseur de route
US8371770B1 (en) 2012-04-09 2013-02-12 Caterpillar Inc. Apparatus for tamping paving material
EP3249101A1 (fr) * 2016-05-23 2017-11-29 Caterpillar Paving Products Inc. Dispositif de damage lissoir d'une finisseuse

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EP4029992B1 (fr) 2023-03-29
PL4029992T3 (pl) 2023-09-11
US20220220674A1 (en) 2022-07-14
JP2022109229A (ja) 2022-07-27
BR102022000695A2 (pt) 2022-07-26
CN216973050U (zh) 2022-07-15
CN114763692A (zh) 2022-07-19
CN114763692B (zh) 2024-07-12

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