EP1261775B1 - Accessory for a road finishing machine - Google Patents

Abstract

The invention relates to an accessory for a road finishing machine. The aim of the invention is to provide an inexpensive accessory that requires little transport space and that facilitates the laying of two road toppings which may also consist of different materials in an economical way when combined with a conventional road finishing machine. The inventive accessory should allow for an easy conversion of the system in order to facilitate the laying of multi-layer road toppings as well as monolayer road toppings. The inventive accessory is used in road finishing machines which are used to lay and compact at least one road topping layer. The road finishing machine comprises an undercarriage with a drive system, a first storage container for the material, a driver's cab, a distributor, a transport device and a compaction bar. The inventive accessory comprises means that facilitate, in combination with the road finishing machine, the simultaneous hot-on-hot laying of two layers, said means consisting of at least one storage container for the material, a transport device, a distribution device and a compaction bar.

Description

The invention relates to an attachment for a paver with which at least one pavement layer is installed and compacted and wherein the paver includes a chassis with a power plant, a first material reservoir, a cab, a distributor, a transport device and a compaction plank, wherein the additional device includes means which, in conjunction with the paver, enables the simultaneous hot-on-hot laying of two layers, said means consisting of at least one material reservoir, transport means, distribution means and a compaction plank

The self-propelled additional device can be coupled to commercially available paver and then preferably serves for the installation of two-layer asphalt pavements. However, it is also possible to install concrete layers or combined concrete and asphalt layers as well as coverings of any kind. In the uncoupled state, the self-propelled additional device can be operated as a conventional, independently operating paver with mixing container and continuous conveyor or without it.

In the prior art it is known to apply coating layers to road structures with the aid of finishers. At present, asphalt construction dominates because this building material has a number of advantages. To better adapt the Asphaltbauweise the burden of heavy traffic, an increase in the degree of compaction and the Striving to reduce the thickness of the outer layers. In order to achieve an effective sealing of the top layer and to minimize the aging of the binder and avoid ruts, ceiling damage, cracks and flaking compact asphalt is used increasingly in which two layers are laid simultaneously hot-on-hot. The installation is carried out either with two pavers that run directly behind each other or with a special paver that combines two pavers in one machine.

According to EP 0 730 694 B1 a paver is known, which allows to install and compact a two-layer asphalt layer with only one device. In this paver on a larger base frame, a second transport and distribution system and a second screed is arranged.

A disadvantage of this arrangement is that a special paver is required for the installation of two asphalt layers, which can be used only for the special use of a two-layer asphalt structure and requires very high production costs.

According to DE 298 03 077 U1 an attachment for a paver is known, which allows the simultaneous hot-on-hot laying of two layers and which has a second material storage bucket, a second transport device and a second distribution device mounted in front of a second screed.

The disadvantage here is that a provided with this accessory Paver claimed during transport from a construction site to a distant other site a large transport volume and heavy mobile crane equipment is needed.

According to EP 0 750 070 A1, a paver is known, which is suitable for the simultaneous installation of at least two concrete pavement layers with a chassis, a chassis, at least two arranged on the chassis Mischgutbehältern, each Mischgutbehälter associated behind the chassis arranged transverse distributor and each equipped with a longitudinal conveyor The two screeds, designed as Hochverdichtungsbohlen are two separate leveling bars, which are articulated to the chassis, floating by the paver pulled along.

A road paver known from DE 23 14812 A1 is constructed in the manner of a slipform paver. In this two screeds are arranged one behind the other and offset transversely. This paver is not suitable for the installation of multi-layer pavement layers, as both screeds edit the same installation layer and the double arrangement is used only for the purpose of adjusting the screed.

From DE 295 14 231 U 1, a slipform paver with a square frame supported by individually driven crawler tracks is known, in which two screeds are successively dragged floating from the support frame. This road construction machine is able to install two separate concrete inlay layers. The disadvantage here is that the pave width is limited by the slip formwork and the paving width are located within the crawler tracks.

The invention has for its object to provide an inexpensive additional device that requires only a small transport volume and in combination with a commercial paver allows the installation of two lining layers and different material in an economical manner and allows a simple retooling of the arrangement to both allow the installation of multi-layer road surfaces as well as the conventional installation of a single-layer coating.

According to the invention succeeds in solving the problem with a paver who having specified in claim 1 features.

Advantageous embodiments of the finisher according to the invention are specified in the subclaims.

A coupled with the inventive self-propelled attachment conventional paver allows the installation of a two-layer covering layer, preferably a two-layer asphalt pavement, with a coupled machine system that can be adapted to the respective task merely by retooling an existing conventional paver. For this purpose, it is only necessary to couple the self-propelled additional device to an existing paver. The self-propelled additional device can be disconnected very easily, so that the user has two pavers available after decoupling, which can be used both for the conventional installation of only one layer and for the installation of a two-layer coating. These machines are also cheaper to produce than a separate Doppelfertiger.

A paver provided with the self-propelled auxiliary device according to the invention has two separate compaction planks, which can be designed as standard or extending screeds with or without high compaction screed. The first screed serves as a built-in and precompression screed and allows an extremely high pre-compaction, which is why compared to the laid according to known methods pads significantly higher flatness of the two-layer coating is achieved. The high level of flatness achieved in this way, in combination with the high degree of precompression, makes it possible to reduce any required re-compaction to a minimum.

An important advantage of the device according to the invention is that standard, usable for the usual paver components for the components work platform, drive unit, chassis, pre-distributor system and compaction planks can be used for the self-propelled additional device.

The inventive arrangement of two compaction planks also makes it possible to create separate profiles for the two layers, e.g. gutters can be introduced Another important advantage is that in a simple way by final coupling of the self-propelled attachment of the conventional paver, a second paver arises whose functions in each case corresponds to that of the first paver, if this equipped with a conventional receiving and conveying module can be worked without an additional transfer device.

It is possible to provide the control of the layer thickness, the so-called leveling coupled with the first board or independently with a separate working control for the second board. Commercially available rigid planks or extendable planks with or without high-compression aggregates can be used as compaction planks.
Only the conversion of a commercial paver to a paver for the installation of two pavement layers is possible by moving the machine room on the paver to the installation dimension of a screw conveyor and the coupling of a second cultivation, a screw conveyor and a special receiving module for two separate coating layers.

• Figur 1 einen handelsüblichen Fertiger im Ausgangszustand,
• Figur 2 den Fertiger nach Abbau von Materialvorratsbehälter und Fahrerdach oder Fahrerhaus,
• Figur 3 eine erfindungsgemäße selbstfahrende Zusatzeinrichtung,
• Figur 4 einen vergrößerten Materialvorratsbehälter,
• Figur 5 den Fertiger mit angekoppelter selbstfahrender Zusatzeinrichtung und vergrößertem Materialvorratsbehälter für das Tragschichtmaterial,
• Figur 6 den Fertiger mit angekoppelter selbstfahrender Zusatzeinrichtung mit hochgestellter Plattform,
• Figur 7 Verstellung der kompletten Plattform nach unten, Verstellung der kompletten Verteilerschnecke, Verdichtungsbohle und der kompletten Plattform nach vorn.
• Figur 8 die selbstfahrende Zusatzeinrichtung als eigenständige arbeitender Fertiger für den konventionellen Belagseinbau mit abgesenktem Mischgutbehälter und Stetigförderer,
• Figur 9 die selbstfahrende Zusatzeinrichtung als eigenständig arbeitender Fertiger für den konventionellen Belageinbau mit Mischgutbehälter und Stetigförderer als Einbaumodul ,
• Figur 10 die selbstfahrende Zusatzeinrichtung als eigenständig arbeitender Fertiger für Belageinbau mit Führungsblechen und Dosierschiebern,
• Figur 11 die selbstfahrende Zusatzeinrichtung als Fertiger für den Mischguteinbau ohne Mischgutbehälter und Stetigförderer mit zweiter Verdichtungsbohle für die gleiche Belagschicht
• Figur 12 eine Ausführungsform für einen mit modularen Zusatzeinrichtungen versehenen Fertiger und einer zusätzlich am Fertiger angebrachten Übergabeeinrichtung in Seitenansicht,

The invention is explained in more detail below with reference to an embodiment. In the accompanying drawing show:

• FIG. 1 shows a commercially available paver in the initial state,
• FIG. 2 shows the paver after removal of the material reservoir and driver's roof or cab,
• FIG. 3 shows a self-propelled additional device according to the invention,
• FIG. 4 shows an enlarged material reservoir,
• FIG. 5 shows the paver with attached self-propelled additional device and enlarged material storage container for the base course material,
• FIG. 6 shows the paver with attached self-propelled additional device with raised platform,
• Figure 7 Adjustment of the complete platform down, adjustment of the complete auger, compaction board and the entire platform forward.
• FIG. 8 shows the self-propelled additional device as an independent working paver for the conventional pavement installation with lowered mixing material container and continuous conveyor;
• FIG. 9 shows the self-propelled additional device as an independently operating paver for conventional lining installation with a mixed material container and continuous conveyor as a built-in module,
• FIG. 10 shows the self-propelled additional device as an independent paver for lining installation with guide plates and metering slides;
• Figure 11 shows the self-propelled attachment as paver for Mischguteinbau without Mischgutbehälter and continuous conveyor with second compaction plank for the same coating layer
• FIG. 12 shows an embodiment for a paver provided with modular ancillary equipment and an additionally attached to the paver transfer device in side view,

In Figure 1, a commercial paver is shown, which is to be coupled with the inventive self-driving accessory. With this paver the installation of a single asphalt layer is possible. For the conversion of the paver to a built-in device with which a two-layer asphalt surface can be laid, first the finisher material storage container 1 and the driver's roof 9 are dismantled.

The state after the dismantling of these devices is shown in FIG. On the remaining base unit are the chassis of the paver with the drive units, the manufacturer transport device 3 and the final distributor 5 and the paver compaction 7 for the base course material. Thereafter, the finisher material storage container 1 is attached to the paver on the paver and coupled to the self-propelled accessory on the paver. For this purpose, it is necessary that after the positioning of the self-propelled additional device it is mechanically locked at the attachment points 17 with the paver.

Figure 3 illustrates an embodiment of the inventive self-driving accessory. The frame 18 is located on the additional landing gear 19, to which the attachment points 17 are attached. The additional chassis 19 can be designed both as a chain chassis and as a wheel chassis. The adjusting arms 11 are pivotally connected to the frame 18 and the platform 10. On the platform 10, the additional material reservoir 2 and the cab 9 are arranged.

FIG. 4 shows an enlarged version of the finisher material storage container 1, which is advantageously used instead of the original storage container on the paver can be attached.

Figure 5 illustrates the coupling of the converted paver with the enlarged material reservoir 1 for the base course material to the self-propelled attachment. The paver shown on the left is coupled to the attachment points 17 inside the additional device.

As can be seen from FIG. 6, it is possible to lift the complete platform 10 of the auxiliary device upwards even in the coupled state. This is advantageous in order to be able to carry out maintenance work on the basic unit without having to uncouple the self-propelled additional unit. In order to enable the lifting of the platform 10, pivotable adjusting arms 11 are attached to the frame 18 of the self-propelled additional device, which are connected at bearing points with the fixed part of the frame 18 and can be moved by means of hydraulic cylinders.

FIGS. 7a to 7d show the adjustment possibilities of components of the self-propelled additional device.
In Figure 7a, the platform 10 with the additional material reservoir 2, the additional transport device 4 and the cab 9, from which the roof has been dismantled, lifted upwards.
In the state shown in FIG. 7b, additional distributors 6 and additional compacting booms 8 are extended to the rear.
In the state shown in Figure 7c all units are retracted. This condition is particularly useful for the transport of the attachment. But it can also be laid single-layer asphalt pavements so.
The state shown in Figure 7d, in which the platform 10 is extended with the units attached to her forward, allows the attachment of assemblies between additional landing gear and additional compaction boom 8, for example Gleitschalungs- and Abweisblechen or a distribution screw and a screed. An adjustment of the chassis, the a lane adjustment has the consequence (not shown in Figure 7) to create the possibility of adapting the self-propelled attachment to commercial paver with different lane widths.

FIG. 8 shows an embodiment in which the additional storage container 2 with the associated additional transport means 4 is lowered so far that it is located below the adjustable platform 10, thereby making it possible to load it with commercially available trucks.

FIG. 9 shows an embodiment in which the self-propelled additional device can be coupled to a module which consists of a separate auxiliary material reservoir 2 with integrated additional transport device 4.

In the arrangement shown in FIG. 10, sliding shuttering plates 15 and height-adjustable deflecting plates 14 are arranged on the front side of the additional device, with which it is possible to install road construction material without material reservoirs and transporting devices. For this purpose, it is necessary that the mix is dosed by a depositing device between the chassis of the self-propelled option.

The self-propelled additional device shown in Figure 11, in addition to the additional compaction booms 8 on another module compaction pile 16, which is designed as a module so that it can be easily attached and removed. With this embodiment, the lining layer can be highly compressed.

FIG. 12 shows a paver to which various modules can be attached, depending on the intended use. By attaching individual modules, a commercial road paver can be easily converted to a paver, which is suitable for the installation of two coating layers. The paver consists of a commercial paver in which a Material layer, in the case shown, the support layer is transported from the material reservoir 1 via the conveyor belts for the system 1 to Vorverdichtungsbohle 7, wherein the material is previously distributed over the auger 5.
In the figure, three modules are shown.
Module 1 contains the additional compaction pile 8 and the additional distributor 4. Module 2 consists of a screw conveyor with which the covering layer material is transported from the additional material storage container 2 to the additional compaction pile 8. The module 3 to be mounted on the front side of the paver includes the finisher material supply container 1 for the base layer and the filler material supply container 2 for the cover layer.
To attach the modules 1, 2 and 3 to a commercial paver, it is only necessary to perform simple assembly work. For fastening screw connections are advantageously used, which are mounted in the example shown on fork-shaped fasteners and at corresponding openings of the modules to be connected.
The control of the second screed can be effected by means of a leveling device already provided on the machine or by an additional second leveling device.
It is possible to connect the auxiliary compacting beam 8 with the additional distributor 6 (module 1) rigidly to the paver compaction 7 with a separate height adjustment for screed and auger. Conveniently, the attachment takes place at the leveling bar. It is also possible to arrange the auxiliary compacting beam 8 with the auger of the auxiliary distributor 6 in an articulated manner on the chassis of the tractor.

LIST OF REFERENCE NUMBERS

1

Paver reservoir

2

Additional material reservoir

3

Ready-transport device

4

Additional transport means

5

paver distributor

6

additional distribution

7

Ready-compaction screed

8th

Additional compaction screed

9

Driver roof, cab

10

platform

11

adjusting arms

12

conveyor belt

13

Umstellklappe

14

height-adjustable deflector

15

Sliding shuttering

16

Compacting screed for the same covering layer

17

Attachment point, mechanical locking

18

frame

19

Support wheel

Claims (10)

1. Accessory for a paver by which at least one pavement layer can be built and compacted and wherein the paver comprises an undercarriage with a drive unit, a first material reservoir (1), a driving cab (9), a distributor (5), a transport facility (3) as well as a compaction bar (7), the accessory comprising means that enable simultaneous hot-on-hot laying in conjunction with the paver, the means comprising at least one auxiliary material reservoir (2), an auxiliary transport facility (4), an auxiliary distribution facility (6) and an auxiliary compaction bar (8), characterized in that the accessory is self-propelled and comprises an auxiliary undercarriage (19) as well as a frame (18), wherein fixation points (17) are arranged at the auxiliary undercarriage (19) for a detachable connection with the undercarriage of the paver, and the frame (18) comprises pivotable displacement arms (11) which can be moved by means of hydraulic cylinders and enable a lifting movement and/or a pivoting movement of a platform (10) arranged above the auxiliary undercarriage (19).
2. Accessory according to claim 1, characterized in that the drive unit of the auxiliary undercarriage (19) can be electronically/electrically and/or hydraulically connected with that of the paver, and the target value for driving velocity and direction can be specified by the accessory and/or by the paver.
3. Accessory according to claim 1 or 2, characterized in that the auxiliary undercarriage (19) is broadened so far that the paver can be received and affixed within the accessory.
4. Accessory according to one of the preceding claims, characterized in that the paver material reservoir (1) for the first pavement layer is arranged at the front of the paver and the auxiliary material reservoir (2) for the second pavement layer is arranged at the front of the accessory.
5. Accessory according to one of the preceding claims, characterized in that means for adjusting the wheel alignment are arranged at the frame (18), facilitating coupling of the self-propelled accessory with a commercially available paver.
6. Accessory according to one of the preceding claims, characterized in that the auxiliary distribution facility (6) and the auxiliary compaction bar (8) for the second mixed good are arranged shiftable into the direction of the auxiliary undercarriage (19).
7. Accessory according to one of the preceding claims, characterized in that the whole platform (10) is shiftable to the front along the building direction, and the auxiliary material reservoir (2) with the auxiliary transport facility (4) is shiftable downwards from the platform (10) into the direction of the auxiliary undercarriage (19).
8. Accessory according to one of the preceding claims, characterized in that the auxiliary material reservoir (2) is connected with the auxiliary transport facility (4) by mechanical and/or hydraulic quick release fasteners so that it can be easily decoupled from the self-propelled accessory and replaced by a new larger mixed good container having a chain grate conveyor.
9. Accessory according to one of the preceding claims, characterized in that slipform plates and height adjustable deflection plates (14, 15) are arranged below the platform (10) in order to be able to use the self-propelled accessory to build a pavement layer without a mixed good container and a conveyor.
10. Accessory according to one of the preceding claims, characterized in that, in addition to the auxiliary compaction bar (8), another module compaction bar (16) is arranged for the same building layer.

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