EP0472094B1 - Roadfinisher with lower plate oscillating around a hinge connecting the plate to a supporting structure - Google Patents
Roadfinisher with lower plate oscillating around a hinge connecting the plate to a supporting structure Download PDFInfo
- Publication number
- EP0472094B1 EP0472094B1 EP91113566A EP91113566A EP0472094B1 EP 0472094 B1 EP0472094 B1 EP 0472094B1 EP 91113566 A EP91113566 A EP 91113566A EP 91113566 A EP91113566 A EP 91113566A EP 0472094 B1 EP0472094 B1 EP 0472094B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screed
- smoothing plate
- road
- load
- connecting means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009499 grossing Methods 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000003534 oscillatory effect Effects 0.000 claims 3
- 239000004566 building material Substances 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 6
- 238000005056 compaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
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
- E01C19/407—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 with elements or parts partly or fully immersed in or penetrating into the material to act thereon, e.g. immersed vibrators or vibrating parts, kneading tampers, spaders
Definitions
- the present invention relates to a paver with a screed for working paving which is movable in one direction and is suitable for distributing, paving and compacting paving materials
- the screed comprising a first load-bearing superstructure and one with the first load-bearing structure Superstructure connecting second structure, the second structure consisting of a smoothing plate which is suitable for determining the thickness of the road surface, the screed having vibration means for generating vertical vibrations of the smoothing plate in the course of the movements of the paver and control means for controlling the width of the vibrations and for damping the vibrations transmitted to the first supporting superstructure, and a protective device in front of a connecting means which connects the first supporting upper structure to the smoothing plate in order to prevent material from road surface building material from penetrating into the connecting means, the protective device on the connecting means extending at least over the entire length of the connecting means, the connecting means, viewed in the working direction, is arranged in the front part of the screed and in this way the supporting upper structure is connected to the smoothing
- vibrating devices for directional or non-directional vibrations can be installed, which provide for the vibrations of a screed smoothing plate, so that the road surface is compacted and smoothed.
- the vibrating devices In order to maintain a wave movement, the vibration range of which is adapted to the use of the paver, the vibrating devices should have a power which is suitable for the mass of the paver to be vibrated.
- the invention has for its object to allow a single structure of a screed of the paver to vibrate with a reduced power requirement, although comparable smoothing effects as with conventional pavers with a high power requirement or better smoothing effects than conventional pavers with the same power requirement are achieved.
- the rear elastic connection comprises control means in the form of two tensionable pairs of springs for controlling the width of the vibrations.
- Fig. 1 shows a front view of a screed of a paver according to the invention, in which a vibrating device 1 equipped with an external center mass 29 is kinematically connected to a motor 2 such that the motor 2 drives the vibrating device 1.
- Fig. 2 shows a section of the screed of a paver shown in Fig. 1 with the solder plane A-A.
- a supporting upper structure 3 is shown, which carries a plate-shaped lower structure or smoothing plate 7.
- the smoothing plate 7 is connected to the upper structure 3 by a hinge 6 arranged in the front part of the screed and by two pairs of springs 8 and 9 located in the side ends of the screed, bolts 10 being provided for compressing the springs 8 and 9, respectively.
- the supporting structure 3 is connected to the paver, not shown, by conventional means, not shown.
- conventional elements, not shown, for controlling the screed in relation to the road working machine are provided in order to produce a predetermined thickness X (FIG. 2) from road surface building material.
- a protective device 5 is provided in front of the hinge 6 between the structure 3 and the smoothing plate 7 in order to prevent material from road surface building material from penetrating into the hinge 6 while the paver is moving in the direction C.
- the protective device 5 extends at least over the entire length of the hinge 6.
- the screed moved by the paver moves in the direction of arrow C.
- the structure 3 installed in the paver pulls the screed plate 7 in the same direction C, the screed plate 7 being connected to the structure 3 by the hinge 6.
- the smoothing plate 7 is set in motion by the vibrating device 1, which is kinematically connected to the motor 2.
- the vibrating smoothing plate 7 compresses the covering material until a thickness X is obtained.
- the road surface building material is compacted by the forward movement and the vibration of the smoothing plate 7.
- the smoothing plate 7 pivots about the hinge 6 in alternating movements under the action of the vibrating device 1.
- This has an eccentric mass 29 which allows the smoothing plate 7 to swing in four directions D, E, F, G.
- the smoothing plate 7 connected to the structure 3 by the hinge 6 can only swing in the directions E and D.
- the width of the curved line described by the smoothing plate depends on the distance of the points belonging to the smoothing plate 7 from the hinge 6. In the area of the smoothing plate 7, which acts on the built-in layer, the widths of the sheets are sufficient to produce a uniform and progressive compactness of the thickness X of the covering material 4 due to the movement of the smoothing plate 7 in the direction C.
- the pairs of springs from the springs 8 and 9 are arranged as shown in FIG. 3.
- a first claw 14 fastened to the structure 3 is provided for each pair of springs from the springs 8 and 9, the claw 14 having a first through hole 15 for the bolt 10 is equipped.
- a second claw 16 fastened with the smoothing plate 7 is equipped with a second through hole 17 for the bolt 10.
- the spring 9 is arranged between a support plane 20 provided in the claw 15 and a support plane 21 which is located in one side 22 of a bushing 23.
- the head of the bolt 10 is supported on a second side 24 opposite the first side 22.
- a nut 25 is supported on a plane 26 of the claw 16 for adjusting the tension of the spring 8, which determines the tension of the spring 9.
- the width of the vibrations of the smoothing plate 7 depends on the tension of the spring 9 in an inversely proportional manner.
- the springs 9 transmit the vibrations to the structure 3. Nevertheless, the vibrations are damped by the elasticity of the spring 9 in order not to damage the structure 3, which is connected to the paver.
- the claw 14 is constructed so that there is no material fatigue of the material from which it is built.
- FIG. 4 shows the paver equipped with a device for starting the pounding process of the road surface.
- This device consists of an eccentric rotor 27 and a tamper 11 which is connected to the rotor 27 by a conventional connecting member 28.
- the rotor 27 drives the tamper 11 alternately up and down to start the smoothing process of the road surface, which is processed by the smoothing plate 7.
- a protective device 12 is arranged in front of the hinge 6 in the direction C of the paver in order to prevent material from road surface building material from penetrating into the hinge 6, the protective device 12 extending at least over the entire length of the hinge.
- the hinge 6 is an elastic hinge that combines the functions of binding with a degree of freedom between the structures 3 and 7 and of elastic connection between the same structures.
Description
Die vorliegende Erfindung bezieht sich auf einen Fertiger mit einer Einbaubohle um Straßendecken zu bearbeiten, welche in einer Richtung bewegbar ist, und geeignet ist, Straßendeckenbaustoffe zu verteilen, einzubauen und zu verdichten, wobei die Einbaubohle aus einer ersten tragenden Oberstruktur und einer mit der ersten tragenden Oberstruktur verbindenden zweiten Struktur besteht,
wobei die zweite Struktur aus einem Glättblech besteht, das geeignet ist, die Dicke der Straßendecke zu bestimmen,
wobei die Einbaubohle Schwingungsmittel zur Erzeugung von vertikalen Schwingungen des Glättblechs im Laufe der Bewegungen des Fertigers und Steuerungsmittel zur Steuerung der Weite der Schwingungen und zur Dämpfung der auf die erste tragende Oberstruktur übertragenden Schwingungen aufweist,
und eine Schutzvorrichtung vor einem die erste tragende Oberstruktur mit dem Glättblech verbundenen Verbindungsmittel zur Verhinderung, daß Material aus Straßendeckenbaustoff in das Verbindungsmittel eindringen kann, wobei sich die Schutzvorrichtung am Verbindungsmittel mindestens über die ganze Länge des Verbindungsmittels erstreckt,
wobei das Verbindungsmittel, in Arbeitsrichtung betrachtet, im Vorderteil der Einbaubohle angeordnet ist und auf diese Weise die tragende Oberstruktur mit dem Glättblech verbunden ist, und ein Schwingungsmittel im hinteren Teil der Einbaubohle angeordnet ist und das Verbindungsmittel aus einem Scharnier besteht,
welches sich in Richtung der Breite der Einbaubohle quer zur Arbeitsrichtung erstreckt,
und wobei das Glättblech und die erste tragende Oberstruktur im hinteren Teil der Einbaubohle eine elastische Verbindung aufweisen.The present invention relates to a paver with a screed for working paving which is movable in one direction and is suitable for distributing, paving and compacting paving materials, the screed comprising a first load-bearing superstructure and one with the first load-bearing structure Superstructure connecting second structure,
the second structure consisting of a smoothing plate which is suitable for determining the thickness of the road surface,
the screed having vibration means for generating vertical vibrations of the smoothing plate in the course of the movements of the paver and control means for controlling the width of the vibrations and for damping the vibrations transmitted to the first supporting superstructure,
and a protective device in front of a connecting means which connects the first supporting upper structure to the smoothing plate in order to prevent material from road surface building material from penetrating into the connecting means, the protective device on the connecting means extending at least over the entire length of the connecting means,
the connecting means, viewed in the working direction, is arranged in the front part of the screed and in this way the supporting upper structure is connected to the smoothing plate, and an oscillating means in the rear part of the screed is arranged and the connecting means consists of a hinge,
which extends across the working direction in the width of the screed,
and wherein the smoothing plate and the first supporting upper structure in the rear part of the screed have an elastic connection.
Auf den herkömmlichen Einbaubohlen (wie z.B. aus der US-A-4 313 690 vorbekannt) lassen sich Rüttelvorrichtungen für gerichtete oder ungerichtete Schwingungen einbauen, die für die Schwingungen eines Glättblechs der Einbaubohle sorgen, damit die Straßendecke verdichtet und geglättet wird. Zur Erhaltung einer Wellenbewegung, deren Schwingungsweite an die Verwendung des Fertigers angepaßt ist, sollen die Rüttelvorrichtungen eine für die zu schwingende Masse des Fertigers geeignete Leistung haben.On the conventional screeds (as known, for example, from US-A-4 313 690), vibrating devices for directional or non-directional vibrations can be installed, which provide for the vibrations of a screed smoothing plate, so that the road surface is compacted and smoothed. In order to maintain a wave movement, the vibration range of which is adapted to the use of the paver, the vibrating devices should have a power which is suitable for the mass of the paver to be vibrated.
Der Erfindung liegt die Aufgabe zugrunde, eine einzige Struktur einer Einbaubohle des Fertigers mit vermindertem Leistungsbedarf schwingen zu lassen, obgleich vergleichbare Glättwirkungen, wie bei herkömmlichen Fertigern mit hohem Leistungsbedarf oder bessere Glättwirkungen als herkömmliche Fertiger mit gleichem Leistungsbedarf erreicht werden.The invention has for its object to allow a single structure of a screed of the paver to vibrate with a reduced power requirement, although comparable smoothing effects as with conventional pavers with a high power requirement or better smoothing effects than conventional pavers with the same power requirement are achieved.
Die Aufgabe wird dadurch gelöst, daß die hintere elastische Verbindung Steuerungsmittel in Form von zwei spannbaren Federpaaren zur Steuerung der Weite der Schwingungen umfaßt.The object is achieved in that the rear elastic connection comprises control means in the form of two tensionable pairs of springs for controlling the width of the vibrations.
Außerdem werden die folgenden Aufgaben durch die Verwendung der Erfindung gelöst:
- 1. Die Dämpfung der auf die tragende Struktur übertragenen Schwingungen, um bessere Arbeitsbedingungen für den Anwender zu erhalten;
- 2. Die Erhaltung einer richtigen Bemessung der tragenden Struktur in bezug auf die sehr geringen Schwingungen;
- 3. Das Übertragen einer fortlaufenden Schwingung auf den Staßendeckenbaustoff zur Erzielung einer besseren Endverdichtung;
- 4. Die Erhaltung derselben Verdichtungswirkung, die durch einen mit einer Rüttelvorrichtung für gerichtete Schwingungen ausgestatteten Fertiger erhalten werden, durch die Verwendung einer in dem erfindungsgemäßen Fertiger eingebauten Rüttelvorrichtung für ungerichtete Schwingungen, wobei die Rüttelvorrichtung für gerichtete Schwingungen denselben Leistungsbedarf benötigt;
- 5. Die Reduzierung der nachfolgenden Walzarbeit durch eine Straßenwalze infolge einer höheren durch die Einbaubohle erreichten Verdichtung.
- 1. The damping of the vibrations transmitted to the supporting structure in order to improve working conditions for the Get users;
- 2. The maintenance of a correct dimensioning of the supporting structure in relation to the very low vibrations;
- 3. The transmission of a continuous vibration to the road surface building material to achieve a better final compaction;
- 4. The preservation of the same compaction effect obtained by a paver equipped with a vibrator for directional vibrations by using a vibrator for non-directional vibrations built into the paver according to the invention, the vibrator for directional vibrations requiring the same power requirement;
- 5. The reduction of the subsequent rolling work by a road roller due to a higher compaction achieved by the screed.
Weitere Vorteile, Einzelheiten und erfindungswesentliche Merkmale ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels des Fertigers gemäß der Erfindung, unter Bezugnahme auf die beigefügten Zeichnungen. Dabei zeigt im einzelnen:
- Fig. 1
- eine Ansicht von vorne einer Einbaubohle eines erfindungsgemäßen Fertigers;
- Fig. 2
- einen Schnitt der in der Fig. 1 dargestellten Einbaubohle in der Lotebene A-A;
- Fig. 3
- einen Bestandteil der Einbaubohle in einem Schnitt in einer Ebene B-B;
- Fig. 4
- einen Vertikalschnitt der Einbaubohle des erfindungsgemäßen Fertigers zur Darstellung einer weiteren Ausführungsform des erfindungsgemäßen Fertigers.
- Fig. 1
- a front view of a screed of a paver according to the invention;
- Fig. 2
- a section of the screed shown in Figure 1 in the vertical plane AA.
- Fig. 3
- a part of the screed in a section in a plane BB;
- Fig. 4
- a vertical section of the screed of the paver according to the invention to illustrate a further embodiment of the paver according to the invention.
Fig. 1 stellt eine Ansicht von vorne einer Einbaubohle eines erfindungsgemäßen Fertigers dar, in dem eine mit einer außenmittiger Masse 29 ausgestattete Rüttelvorrichtung 1 mit einem Motor 2 so kinematisch verbunden ist, daß der Motor 2 die Rüttelvorrichtung 1 antreibt.Fig. 1 shows a front view of a screed of a paver according to the invention, in which a vibrating
Fig. 2 stellt einen Schnitt der in der Fig. 1 dargestellten Einbaubohle eines Fertigers mit der Lotebene A-A dar. In diesen Figuren ist eine tragende Oberstruktur 3 dargestellt, welche eine plattenförmige Unterstruktur oder Glättblech 7 trägt. Das Glättblech 7 wird mit der Oberstruktur 3 durch ein im Vorderteil der Einbaubohle angeordnetes Scharnier 6 und durch zwei in den Seitenenden der Einbaubohle sich befindliche Federpaare aus Federn 8 und 9 verbunden, wobei jeweils Bolzen 10 zum Zusammendrücken der Federn 8 und 9 vorgesehen sind.Fig. 2 shows a section of the screed of a paver shown in Fig. 1 with the solder plane A-A. In these figures, a supporting
Die tragende Struktur 3 wird mit dem nicht dargestellten Fertiger durch nicht dargestellte herkömmliche Mittel verbunden. Außerdem sind nicht dargestellte herkömmliche Elemente zur Steuerung der Einbaubohle in bezug auf die Straßenarbeitsmaschine vorgesehen, um eine vorbestimmte Dicke X (Fig. 2) aus Straßendeckenbaustoff auszufertigen.The supporting
Eine Schutzvorrichtung 5 ist vor dem Scharnier 6 zwischen der Struktur 3 und dem Glättblech 7 vorgesehen um zu verhindern, daß Material aus Straßendeckenbaustoff in das Scharnier 6, während sich der Fertiger in Richtung C bewegt, eindringen kann. Die Schutzvorrichtung 5 erstreckt sich mindestens über die gesamte Länge des Scharniers 6.A
Die durch den Fertiger bewegte Einbaubohle bewegt sich in der Richtung des Pfeils C. Die in dem Fertiger eingebaute Struktur 3 zieht das Glättblechs 7 in derselben Richtung C, wobei das Glättblech 7 mit der Struktur 3 durch das Scharnier 6 verbunden ist. Das Glättblech 7 wird durch die Rüttelvorrichtung 1 in Schwingung versetzt, die mit dem Motor 2 kinematisch verbunden ist. Das schwingende Glättblech 7 verdichtet den Deckungsstoff bis zum Erhalten einer Dicke X. Durch die Vorwärtsbewegung und die Vibration des Glättblechs 7 wird der Straßendeckenbaustoff verdichtet.The screed moved by the paver moves in the direction of arrow C. The
Das Glättblech 7 schwenkt um das Scharnier 6 in alternierenden Bewegungen unter der Wirkung der Rüttelvorrichtung 1. Diese weist eine außermittige Masse 29 auf, die das Glättblech 7 in vier Richtungen D, E, F, G schwingen läßt. Trotzdem kann die mit der Struktur 3 durch das Scharnier 6 verbundene Glättblech 7 nur in den Richtungen E und D schwingen. Daraus entsteht eine alternierende Bewegung des Glättbleches 7 in den Richtungen E und D, die wegen der beschränkten Weite der Schwingungen fast vertikal ist. Es ist mathematisch beweisbar, daß die Schwingungen des Glättblechs 7 praktisch in vertikaler Richtung geschehen, wenn die Weite der Schwingungen in einem Winkel von fast 15o Grad begrenzt ist, und dessen Bogen mit dem Sinus vergleichbar ist. Es ist klar, daß die Weite der durch das Glättblech beschriebenen Bogenlinie vom Abstand der dem Glättblech 7 zugehörigen Punkte vom Scharnier 6 abhängt. Im Bereich des Glättblechs 7, der auf die Einbauschicht wirkt, sind die Weiten der Bogen ausreichend, um eine gleichartige und progressive Kompaktheit der Dicke X des Deckungsstoffes 4 infolge der Bewegung des Glättblechs 7 in der Richtung C auszufertigen.The
Die Federpaare aus den Federn 8 und 9 sind angeordnet, wie in der Fig. 3 dargestellt. Für jedes Federpaar aus den Federn 8 und 9 ist eine mit der Struktur 3 befestigte erste Pratze 14 vorgesehen, wobei die Pratze 14 mit einem ersten durchgehenden Loch 15 für den Bolzen 10 ausgestattet ist. Eine mit dem Glättblech 7 befestigte zweite Pratze 16 ist mit einem zweiten durchgehenden Loch 17 für den Bolzen 10 ausgestattet. Die Feder 9 ist zwischen einer in der Pratze 15 vorgesehenen Auflageebene 20 und einer Auflageebene 21 angeordnet, die sich in einer Seite 22 einer Buchse 23 befindet. Der Kopf des Bolzens 10 stützt sich auf einer der ersten Seite 22 entgegengesetzten zweiten Seite 24 ab. Eine Schraubenmutter 25 stützt sich auf einer Ebene 26 der Pratze 16 zur Verstellung der Spannung der Feder 8 ab, die die Spannung der Feder 9 bestimmt.The pairs of springs from the
Die Weite der Schwingungen des Glättblechs 7 hängt von der Spannung der Feder 9 in umgekehrt proportionaler Weise ab. Die Federn 9 übertragen die Schwingungen auf die Struktur 3. Trotzdem sind die Schwingungen durch die Elastizität der Feder 9 gedämpft, um die Struktur 3, die mit dem Fertiger verbunden ist, nicht schadhaft zu belasten. Außerdem ist die Pratze 14 so gebaut, daß keine Materialermüdung des Werkstoffes, aus der sie gebaut ist, erfolgt.The width of the vibrations of the smoothing
Fig. 4 stellt den mit einer Vorrichtung zum Anfang des Stampfverfahrens der Straßendecke ausgestatteten Fertiger dar. Diese Vorrichtung besteht aus einem außermittigen Läufer 27 und aus einem Stampfer 11, der mit dem Läufer 27 durch ein herkömmliches Verbindungsglied 28 verbunden ist. Der Läufer 27 treibt den Stampfer 11 wechselweise nach oben und nach unten zum Beginn des Glättungsverfahrens der Straßendecke, das durch das Glättblech 7 abgearbeitet wird.FIG. 4 shows the paver equipped with a device for starting the pounding process of the road surface. This device consists of an
Eine Schutzvorrichtung 12 ist vor dem Scharnier 6 in der Richtung C des Fertigers angeordnet, um zu verhindern, daß Material aus Straßendeckenbaustoff in das Scharnier 6 eindringt, wobei sich die Schutzvorrichtung 12 zumindest über die ganze Länge des Scharniers erstreckt.A
In einer nicht dargestellten Ausführungsform der Erfindung ist das Scharnier 6 ein elastisches Scharnier, das die Funktionen von Bindung mit einem Freiheitsgrad zwischen den Strukturen 3 und 7 und von elastischer Verbindung zwischen denselben Strukturen vereinigt.In an embodiment of the invention, not shown, the
Claims (5)
- A road finisher with a screed for processing road surfaces, the screed being movable in one direction (C) and adapted to distribute, lay and compact road surfacing materials, the screed consisting of a first load-bearing top structure (3) and a second structure (7) connecting to the first load-bearing top structure (3),
the second structure consisting of a smoothing plate (7) adapted to determine the thickness (X) of the road surface,
the screed comprising oscillatory means for generating vertical oscillations of the smoothing plate (7) during the movements of the road finisher, and control means (8, 9, 10) to control the width of the oscillations and to damp the oscillations transmitting to the first load-bearing top structure (3),
and a protective device (5, 12) in front of a connecting means (6) connecting the first load-bearing top structure (3) to the smoothing plate (7), to prevent material from the road surfacing from penetrating into the connecting means (6), the protective device (5, 12) at the connecting means (6) extending at least over the entire length of the connecting means (6),
the connecting means (6), as considered in the working direction (C), being disposed in the front part of the screed and in this way the load-bearing top structure (3) is connected to the smoothing plate (7), and an oscillatory means (1) is disposed in the rear part of the screed and the connecting means (6) consists of a hinge,
which extends transversely of the working direction in the direction of the width of the screed,
and the smoothing plate (7) and the first load-bearing top structure (3) having an elastic connection in the rear part of the screed,
characterised in that
the rear elastic connection comprises control means (8, 9, 10) in the form of two tensionable spring pairs (8, 9) for controlling the width of the oscillations. - A road finisher according to Claim 1,
characterised in that the oscillatory means comprises a vibratory device (1) provided with an off-centre mass (29). - A road finisher according to Claim 1,
characterised in that in the control means (8, 9, 10) a pair of female screws (10) act on the second springs to control the tension of the first spring (9) in order to determine the width of the oscillations of the smoothing plate (7). - A road finisher according to Claim 1,
characterised in that the connecting means (6) consists of an elastic hinge. - A road finisher according to Claim 1,
characterised in that a tamper (11) is provided which is connected to an off-centre rotor (27) via a connecting member (28), the rotor (27) alternately driving the tamper (11) upwardly and downwardly at the start of the road surface smoothing operation finished by the smoothing plate (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT4631290 | 1990-08-23 | ||
| IT04631290A IT1243556B (en) | 1990-08-23 | 1990-08-23 | IRON, FOR EXTENSION OF ROAD COATS, WITH SWINGING LOWER PART AROUND AN AXIS PLACED ON THE SAME IRON. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0472094A1 EP0472094A1 (en) | 1992-02-26 |
| EP0472094B1 true EP0472094B1 (en) | 1995-01-11 |
Family
ID=11258601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91113566A Expired - Lifetime EP0472094B1 (en) | 1990-08-23 | 1991-08-13 | Roadfinisher with lower plate oscillating around a hinge connecting the plate to a supporting structure |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0472094B1 (en) |
| DE (1) | DE59104216D1 (en) |
| ES (1) | ES2069140T3 (en) |
| IT (1) | IT1243556B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9212166U1 (en) * | 1992-09-09 | 1994-01-20 | Voegele Ag J | Screed for a paver |
| CN102409597B (en) * | 2011-11-11 | 2014-02-12 | 中联重科股份有限公司 | Ironing plate and spreading machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR893442A (en) * | 1942-05-04 | 1944-06-08 | Licentia Gmbh | Apparatus for constructing road surfaces of concrete or other similar backfill material |
| US4313690A (en) * | 1977-12-14 | 1982-02-02 | As Phonix | Asphalt laying machine |
| WO1980000160A1 (en) * | 1978-06-28 | 1980-02-07 | Aebi Ag R | Finishing machine for concrete road |
| DE3114049C3 (en) * | 1981-04-07 | 1988-06-16 | Voegele Ag J | CEILER |
-
1990
- 1990-08-23 IT IT04631290A patent/IT1243556B/en active IP Right Grant
-
1991
- 1991-08-13 ES ES91113566T patent/ES2069140T3/en not_active Expired - Lifetime
- 1991-08-13 DE DE59104216T patent/DE59104216D1/en not_active Expired - Lifetime
- 1991-08-13 EP EP91113566A patent/EP0472094B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| IT9046312A0 (en) | 1990-08-23 |
| ES2069140T3 (en) | 1995-05-01 |
| EP0472094A1 (en) | 1992-02-26 |
| IT9046312A1 (en) | 1992-02-23 |
| IT1243556B (en) | 1994-06-16 |
| DE59104216D1 (en) | 1995-02-23 |
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