Road surface milling cutter

Description

[0001] The present invention relates to a road surface milling cutter, more particularly to an asphalt and bitumen milling cutter.

[0002] Such road surface milling cutters are generally known and comprise for instance an elongate milling drum having milling elements such as milling teeth on the outer or peripheral surface thereof. The milling drum is rotatable here about a lying rotation axis and the road surface milling cutter comprises a drive for rotating the milling drum about its rotation axis.

[0003] When asphalt and/or bitumen have to be removed, a base layer must in many applications be left as intact as possible. Such a base layer can comprise a membrane under the asphalt or a metal or concrete bridge deck having a membrane or epoxy layer (under the asphalt or bitumen) and so on.

[0004] The milling drum driven with considerable force is found to have a strong tendency to dig itself deeper and deeper into the road surface. This can thus result in damage to said base layer and occurs during rotation of the milling drum in a first rotation direction. In an opposite second rotation direction the milling drum tends to move upward, away from the road surface, whereby the road surface is cut away insufficiently or even not at all. In order to avoid this a very strong and robust suspension of the milling drum is required and, if a height adjustment is desired, this must then be able to withstand the strong tendency of the milling drum to move downward or upward during operation.

[0005] Further known from DE-100.41.275, which is considered the closest prior art for the subject-matter of claim 1, and DE-2.242.881 is a road surface milling cutter for removing asphalt and/or bitumen from a road surface, comprising at least one milling drum which during use of the road surface milling cutter is rotatable about a rotation axis positioned at least approximately at right angles to the road surface and which has milling elements on the outer surface thereof.

[0006] This known milling drum has a relatively small contact surface with the road surface with a dimension similar to the thickness of the quantity of road surface to be removed and half the periphery of the milling drum, and the amount of force required to drive the milling drum is hereby reduced and, as a result of the orientation of the rotation axis, the milling drum moreover tends to do no more than sheer away to the left or right, and it is thus possible to considerably reduce robustness, force, cost and complexity. These road surface milling cutters nevertheless have the drawback that a base layer of a road surface can be adversely affected. The milling drum of DE-100.41.275 has on the underside thereof milling teeth which are oriented downward onto and into the road surface during use and which can thus act on the base layer. DE-2.242.881 discloses a road surface milling cutter with milling drums which are pressed into the asphalt or bitumen by means of cylinders and the weight of a vehicle carrying the road surface milling cutter, also without taking into account preservation of the base layer, this being apparent from downward oriented teeth on the milling rollers.

[0007] The present invention has for its object to provide a road surface milling cutter which does not have the drawbacks of known devices, or in any case does so to considerably lesser extent, for which purpose the invention is distinguished from the prior art by at least one freely rotatable or rotatably driven dish on the milling drum, at the side thereof facing toward the road surface during use, which dish is concave and oriented with a peripheral edge thereof toward the road surface. Such a dish forms a cutting element which can serve to slide over the base layer and/or to cut to a desired depth into the road surface layer to be removed so as to enhance the effectiveness of the road surface milling cutter in combination with the milling drum. A disc can be deemed a flat dish here. The dish according to the invention is here concave with a peripheral edge thereof oriented toward the road surface. A self-sharpening cutting element is thus provided which has a peripheral edge which remains sharp because it is sharpened during use on or in the road surface layer and/or base layer to be removed.

[0008] In a favourable embodiment the road surface milling cutter can comprise the feature that the dish forming a cutting element is arranged under the milling drum to the side of the rotation axis. The road surface milling cutter need not therefore comprise a separate drive for the dish. Furthermore, space is hereby created to arrange more than one dish.

[0009] In an additional or alternative favourable embodiment such a road surface milling cutter with a dish forming a cutting element can have the further feature that an active range of the cutting element extends to a position at or beyond the outer peripheral wall of the milling drum. The dish can thus contribute considerably toward the effectiveness of the milling drum.

[0010] It is noted that the present invention can even be utilized in applications where a separate base layer is not present but where it is the intention that a part of (the height of) the asphalt or bitumen must remain, or must be wholly removed. An epoxy layer or membrane which must remain after milling away of the bitumen or asphalt top layer need not therefore be present to enable useful deployment of a device according to the invention. A sand bed under a road surface can also be considered a base layer.

[0011] Possible within the scope of the present invention are diverse preferred but not limitative embodiments which are discussed below in the description of several figures of possible embodiments of the invention and which are defined in the appended dependent claims.

[0012] In a possible embodiment the road surface milling cutter according to the present invention comprises a drive which is associated with the milling drum and which rotates the milling drum about the rotation axis thereof during operation. Such a drive can be associated with a hydraulic system of a carrier vehicle on which the road surface milling cutter can be optionally temporarily arranged. Additionally or alternatively, an electric motor or any other type of drive can be applied. It is also possible for a drive for the milling cutter to be formed by the motor of a carrier vehicle, similar to the free drive shaft available on tractors for the purpose of driving tools for coupling thereto.

[0013] In an additional or alternative possible embodiment the road surface milling cutter according to the present invention comprises the feature that the milling drum is arranged rotatably on a holder. The holder can serve as intermediary or suspension between the milling drum and a carrier vehicle for the purpose of easy mounting and also optional removal of the milling drum on and from the carrier vehicle.

[0014] In an additional or alternative possible embodiment the road surface milling cutter according to the present invention comprises the feature that the milling drum is arranged on a frame of a displaceable vehicle such as a power shovel, a bulldozer, a mobile excavator or a shovel wheel loader. Suchlike and other vehicles are deemed sufficiently robust for application of the road surface milling cutter according to the present invention. In such an embodiment the measure can be provided that the milling drum is arranged releasably on the vehicle. The vehicle temporarily carrying the road surface milling cutter can thus fulfil its own function when the milling cutter has been released from this vehicle. The road surface milling cutter can likewise be mounted more fixedly on a carrier vehicle, which is then dedicated solely to the function of the milling cutter if sufficient work can be generated for this purpose, this being a commercial consideration. In such an embodiment the measure can be provided that the holder with the least one milling drum thereon can be arranged releasably on the vehicle by means of a coupling. The milling drum could alternatively also be arranged directly on the vehicle, although a holder has advantages, in particular when the road surface milling cutter comprises for instance more than one milling drum and all milling drums can remain mounted on the holder when the holder with the milling drums thereon is removed from the carrier vehicle.

[0015] In an additional or alternative possible embodiment with a drive and arranged on a frame of a displaceable carrier vehicle, the road surface milling cutter according to the present invention comprises the feature that the vehicle comprises a hydraulic system and the drive for the milling drum of the milling cutter comprises a hydraulic motor which can be coupled to the hydraulic system of the vehicle. This is a highly elegant manner of implementing the drive of the road surface milling cutter.

[0016] In an additional or alternative possible embodiment the road surface milling cutter according to the present invention comprises the feature that the milling drum has a form diverging in use in the direction of the road surface, for instance the form of a truncated cone. The bottom edge of the milling drum cuts below the road surface here and a highly effective behaviour and effect is achieved during removal of road surface.

[0017] In an additional or alternative possible embodiment the road surface milling cutter according to the present invention comprises the feature that at least two milling drums are provided. The milling drums can thus have an additional effect on the road surface in a direction of movement of the road surface milling cutter in order to process a wider area thereof. It can be favourable here when the road surface milling cutter has the feature that the at least two milling drums are arranged in offset disposition in a direction of movement of the milling cutter. The milling drums can hereby be prevented from acting on each other, in particular the milling teeth can be prevented from becoming mutually enmeshed, something which can only be prevented in a side-by-side arrangement of the milling drums using complex and costly measures to bring about (synchronous) rotation of the milling drums, particularly when hydraulic power is applied to drive the milling drums. Other drives are however by no means precluded, and the same applies for side-by-side arrangement of the milling drums, although a preferred offset disposition can result in simplification in some applications. A configuration of a road surface milling cutter with at least two milling drums can further have the feature that at least two of the milling drums are arranged on a turntable in order to vary the disposition of the at least two of the milling drums. A user can thus select (and secure) the position of the milling drums relative to each other and relative to the direction of movement of the road surface milling cutter. It is thus made possible to position a milling drum operating more along the centre of a road surface in front of or behind a milling drum operating more along the edge of the road surface.

[0018] In an additional or alternative possible embodiment the road surface milling cutter according to the present invention comprises the feature of a depth adjustment.

[0019] In an additional or alternative possible embodiment the road surface milling cutter with a cutting element and a depth adjustment according to the present invention comprises the feature that the cutting element is arranged on a length-adjustable arm in order to form the depth adjustment. In such an embodiment with an arm it can be favourable for the arm to comprise a cylinder.

[0020] An embodiment of a road surface milling cutter according to the present invention will be described hereinbelow, only by way of example and not as limitation to the scope of protection of the invention, with reference to the accompanying figures wherein the same or similar parts, components and aspects can be designated with the same reference numerals, and in which:

Figure 1 shows a side view and a detail of a road surface milling cutter according to the present invention;

Figure 2 is a perspective view in the direction of arrow II in figure 1 of a holder with two milling drums as possible embodiment of a milling cutter according to the present invention;

Figure 3 and Figure 4 show respectively perspective bottom and top views in the directions of arrows III and IV of the milling drum applied in the embodiment of figure 1 and figure 2, and

Figure 5 is a perspective view of a (part of a) road surface milling cutter according to the present invention with two milling drums which are disposed rotatably around each other by means of a turntable.

[0021] Shown in fig. 1 is a carrier vehicle 1 which is displaceable under its own power in the direction of arrow A. Shown on the front side of carrier vehicle 1 is a road surface milling cutter 2 in a possible embodiment according to the present invention.

[0022] The road surface milling cutter 2 comprises a holder 3 and two milling drums 4 which are suspended from holder 3. Each of the milling drums 4 is driven rotatably about an axis 8 in order to rotate in the direction of arrow B (or an opposite direction). The individual milling drums 4 can likewise be driven in opposite directions.

[0023] Use can be made of a separate drive for the rotation movement of each of the milling drums 4, although it is also possible to apply a joint drive. The drive can be dependent on hydraulic fluid under pressure which can be provided via conduits through the carrier vehicle. This is not further shown, although it is noted that all possible forms of drive can be applied, including electric motors and the like, as possible alternative to hydraulic motors. The hydraulic motors, when applied, can be arranged in the interior of milling drums 4 or in holder 3.

[0024] A holder 3 is formed from profiles 9 which are welded to each other and have on the underside thereof a fixedly arranged base plate 10. Milling drums 4 are, as also shown in fig. 2, arranged on the holder under base plate 10. Use is made for this purpose of an assembly element 11 having therearound a mounting flange 12 in which holes or passages are arranged for the purpose of arranging fastening elements therethrough, such as screws, bolts and nuts and so on. As shown in fig. 3, the milling drum itself is rotatable about assembly element 11 which is attached fixedly to base plate 10.

[0025] Referring again to fig. 1, it is noted that the road surface milling cutter 2 is applied in operative mode to mill road surface 7 from a base layer 6 such as a bridge deck of steel or concrete. Bridge deck 6 is supported by profiles 5.

[0026] Milling cutter 2 is particularly suitable for such an application for removing road surface 7 from a bridge deck 6, but can also be applied to remove an upper layer of a road surface having a membrane thereunder while leaving the membrane itself in place. In the application shown in fig. 1 dishes 13 are arranged under milling drum 4. The dishes 13, of which there are three arranged under each milling drum 4, form cutting elements. As shown clearly in the inset in fig. 1, an epoxy layer 14 can be removed therewith, this epoxy layer 14 being arranged between bridge deck 6 and road surface 7 during laying of road surface 7 for an improved adhesion of road surface 7 to bridge deck 6.

[0027] Milling drums 4 rotate in the direction of arrows B (or an opposite direction). Milling teeth 15 on the outer wall of milling drums 4 hereby act on road surface 7 when milling drums 4 are rotated about the vertical axes 8 thereof. Accompanying this is a rotational movement about the central axis of dishes 13 which function as cutting elements for the purpose of removing the epoxy layer.

[0028] It is noted in this respect that dishes 13 also form a distance adjustment with which the height of milling drum 4 can be set relative to the upper surface of the road surface 7 to be removed or relative to bridge deck 6. The dishes can for this purpose be adjusted up or downward as indicated in fig. 4 using double arrows C.

[0029] Milling cutter 2 in the above described embodiment can be taken into use directly from a side of a road surface, or it is alternatively possible to first begin by breaking open road surface 7 with an excavating or breaking tool and to then utilize the milling drums 4 in a formed opening in order to continue with breaking away road surface 7. In order to make a start enabling the road surface milling cutter to be then taken into use, use can optionally be made of a conventional asphalt stripper (not shown).

[0030] Specifically assumed above is a road surface on a bridge deck, wherein road surface 7 must be broken away from bridge deck 6. In alternative embodiments of a road surface without bridge deck thereunder, use is often made of a base layer with a membrane thereon which has thereon a road surface 7 which optionally has to be replaced. Such a membrane is relatively soft and comparable to roofing felt in terms of its structure. The dishes applied in the foregoing description, which function as cutting elements, can better not be applied when it is the intention to leave the softer structure of a membrane as intact as possible when road surface 7 is being broken away. For such an application other elements or members can better be applied as distance adjustment, such as running wheels or supports of other form which cause no damage to the membrane. Such distance adjustments are within reach of the skilled person with his professional knowledge after examination of the foregoing.

[0031] Already described is that the cutting elements or dishes 13 are movable up and downward in the direction of arrows C in fig. 4. It can also be noted here that dishes 13 can be flat, while shown and described is that dishes 13 take a concave form as seen from below. The dish-like cutting elements 13 can in principle co-rotate passively with milling drum 4 when milling drum 4 is rotated by means of a drive (not shown) in the direction of arrow B (or an opposite direction). This will already suffice in most applications to remove epoxy layers 14 or remnants of road surface 7 to be broken away. Conversely, it is likewise possible to provide the dish-like cutting elements 13 with their own drive for rotation thereof in a direction indicated in fig. 4 with arrow D (or an opposite direction).

[0032] Each of the dish-like cutting elements 13 is placed at a distance from rotation axis 8 around which milling drums 4 rotate. Use can thus be made of more than one cutting element or dish 13, and in the shown embodiment three dish-like cutting elements are applied in each case. More than three or only two dish-like cutting elements 13 are also possible.

[0033] The height adjustment by means of dishes 13 in the direction of double arrows C in fig. 4 can be effected with a cylinder for each of the dishes 13. A damping function can hereby also be provided to greater or lesser extent which can likewise be implemented between assembly element 11 and the milling drum 4.

[0034] The connection of a hydraulic motor in the interior of milling drum 4 or a cylinder with a dish 13 thereon while milling drum 4 must be able to rotate should be possible to realize using the knowledge of the person with ordinary skill in the art. A hydraulic feed and discharge conduit can for instance be arranged for this purpose through assembly element 11 to the interior of milling drums 4.

[0035] The road surface milling cutter according to the present invention also comprises at least two milling drums 4 in the embodiment shown in fig. 5. In the configuration of for instance fig. 2 milling drums 4 have an additional action on the road surface in a direction of movement of the milling cutter as according to arrow A in order to process a wider area of the surface. The two milling drums 4 are arranged offset here relative to the direction of movement A of the road surface milling cutter. Milling drums 4 can hereby be prevented from acting on each other, in particular the milling teeth 15 can be prevented from becoming mutually enmeshed, something which can only be prevented in a side-by-side arrangement of the milling drums using complex and costly measures to bring about (synchronous) rotation of milling drums 4, particularly when hydraulic power is applied to drive milling drums 4. The embodiment in fig. 5 further has the feature that the two milling drums 4 are arranged on a turntable 17 in order to vary the disposition of milling drums 4 relative to the direction of travel A. A user can thus select (and secure) the position of milling drums 4 relative to each other and relative to the direction of movement A of the road surface milling cutter. It is thus made possible to position a milling drum 4 operating more along the centre of a road surface in front of or behind a milling drum 4 operating more along the edge of the road surface. This is realized in that the two milling drums 4 are arranged via a mounting plate 16 on a turntable 17, the turntable 17 being arranged in turn on base plate 10, whereby milling drums 4 are adjustable around each other in the direction of arrow E. One of the two milling drums 4 can thus be positioned in front of the other relative to the direction of travel A, this having evident advantages along an edge or more to the centre of a road surface to be milled.

[0036] It will thus be immediately apparent that, following examination of the foregoing embodiment wherein the accompanying figures are described, the features of the shown and described embodiment must in no way be interpreted as a limitation to the scope of protection of the invention, since within the scope of the appended main claim many additional and alternative embodiments are possible relative to those specifically shown and described.

Claims

1. A road surface milling cutter for removing asphalt and/or bitumen from a road surface, comprising:

- at least one milling drum (4), which during use of the road surface milling cutter is rotatable about a rotation axis (8) positioned at least approximately at right angles to the road surface and which has milling elements (15) on the outer surface thereof,
characterized by
at least one freely rotatable or rotatably driven dish (13) forming a cutting element on the milling drum (4), at the side thereof facing toward the road surface during use, which dish (13) is concave and oriented with a peripheral edge thereof toward the road surface.

2. The road surface milling cutter as claimed in claim 1, wherein the cutting element (13) is arranged under the milling drum (4) to the side of the rotation axis (8).

3. The road surface milling cutter as claimed in claim 1 or 2, wherein an active range of the cutting element (13) extends to a position at or beyond the outer peripheral wall of the milling drum (4).

4. The road surface milling cutter as claimed in claim 1, 2 or 3, further comprising a drive which is associated with the milling drum (4) and which rotates the milling drum (4) about the rotation axis (8) thereof during operation.

5. The road surface milling cutter as claimed in at least one of the foregoing claims, wherein the milling drum (4) is arranged rotatably on a holder.

6. The road surface milling cutter as claimed in at least one of the foregoing claims, wherein the milling drum (4) is arranged on a displaceable vehicle (1) such as a power shovel, a bulldozer, a mobile excavator, a shovel wheel loader or a vehicle provided specifically for milling road surfaces.

7. The road surface milling cutter as claimed in claim 6, wherein the milling drum (4) is arranged releasably on the vehicle (1).

8. The road surface milling cutter as claimed in claim 5 and claim 6 or 7, wherein the holder with the least one milling drum (4) thereon can be arranged releasably on the vehicle (1) by means of a coupling.

9. The road surface milling cutter as claimed in claim 4 and claim 6, 7 or 8, wherein the vehicle (1) comprises a hydraulic system and the drive for the milling drum (4) of the milling cutter comprises a hydraulic motor which can be coupled to the hydraulic system of the vehicle (1).

10. The road surface milling cutter as claimed in at least a foregoing claim, wherein the milling drum (4) has a form diverging in the direction of the road surface, for instance the form of a truncated cone.

11. The road surface milling cutter as claimed in at least a foregoing claim, wherein at least two milling drums (4; 4) are provided.

12. The road surface milling cutter as claimed in claim 11, wherein the at least two milling drums (4; 4) are arranged in offset disposition in a direction of movement of the milling cutter.

13. The road surface milling cutter as claimed in claim 11 or 12, wherein at least two of the milling drums (4) are arranged on a turntable (16, 17) in order to vary the disposition of the at least two of the milling drums (4; 4).

14. The road surface milling cutter as claimed in at least a foregoing claim, further comprising a depth adjustment.

15. The road surface milling cutter as claimed in at least one of the foregoing claims, wherein the concave dish forming a cutting element (13) is arranged on a length-adjustable arm in order to form the depth adjustment (C).

Ansprüche

1. Fräse für Straßenoberflächen zum Entfernen von Asphalt und/oder Bitumen von einer Straßenoberfläche, aufweisend:

- wenigstens eine Fräswalze (4), welche während des Einsatzes der Fräse für Straßenoberflächen rotierbar um eine Rotationsachse (8) zumindest annähernd im rechten Winkel zu der Straßenoberfläche angeordnet ist, und welche Fräselemente (15) an der äußeren Oberfläche aufweist, gekennzeichnet durch
wenigstens eine frei rotierbare oder rotierend angetriebene Schaufel (13), die ein Schneideelement auf der Fräswalze (4) ausbildet, an der Seite von dieser, die der Straßenoberfläche während des Einsatzes zugewandt ist, wobei die Schale (13) konkav und mit einer Umfangskante zur Straßenoberfläche hin orientiert ist.

2. Fräse für Straßenoberflächen gemäß Anspruch 1, wobei das Schneideelement (13) unter der Fräswalze (4) seitlich der Rotationsachse (8) angeordnet ist.

3. Fräse für Straßenoberflächen gemäß Anspruch 1 oder 2, wobei sich ein aktiver Bereich des Schneideelements (13) zu einer Position an oder bis hinter die Außenwand der Fräswalze (4) erstreckt.

4. Fräse für Straßenoberflächen gemäß einem der Ansprüche 1, 2 oder 3, des Weiteren einen Antrieb aufweisend, welcher mit der Fräswalze (4) in Verbindung steht und welcher die Fräswalze (4) um die Rotationsachse (8) von dieser während des Einsatzes rotiert.

5. Fräse für Straßenoberflächen gemäß einem der vorangegangenen Ansprüche, wobei die Fräswalze (4) drehbar um einen Halter angeordnet ist.

6. Fräse für Straßenoberflächen gemäß einem der vorangegangenen Ansprüche, wobei die Fräswalze (4) an einem beweglichen Fahrzeug (1) angebracht ist, wie einem Löffelbagger, einem Bulldozer, einer mobilen Aushubmaschine, einem Schaufelradlader oder einem Spezialfahrzeug zum Fräsen von Straßenoberflächen.

7. Fräse für Straßenoberflächen gemäß Anspruch 6, wobei die Fräswalze (4) lösbar an dem Fahrzeug (1) angeordnet ist.

8. Fräse für Straßenoberflächen gemäß Anspruch 5 und Anspruch 6 oder 7, wobei der Halter mit der wenigstens einen Fräswalze (4) daran an einem Fahrzeug (1) mittels einer Kupplung lösbar angeordnet werden kann.

9. Fräse für Straßenoberflächen gemäß Anspruch 4 und Anspruch 6, 7 oder 8, wobei das Fahrzeug (1) ein hydraulisches System und der Antrieb für die Fräswalze (4) der Fräse einen hydraulischen Motor aufweist, welcher an das hydraulische System des Fahrzeugs (1) gekoppelt sein kann.

10. Fräse für Straßenoberflächen gemäß einem der vorherigen Ansprüche, wobei die Fräswalze (4) eine Gestalt aufweist, welche in Richtung der Straßenoberfläche divergiert, beispielsweise die Gestalt eines abgeschnittenen Kegels.

11. Fräse für Straßenoberflächen gemäß einem der vorangegangenen Ansprüche, wobei wenigstens zwei Fräswalzen (4; 4) vorgesehen sind.

12. Fräse für Straßenoberflächen gemäß Anspruch 11, wobei die wenigstens zwei Fräswalzen (4; 4) in einer Versatzposition in einer Bewegungsrichtung der Fräse angeordnet sind.

13. Fräse für Straßenoberflächen gemäß Anspruch 11 oder 12, wobei die wenigstens zwei Fräswalzen (4) auf einem Drehtisch (16, 17) angeordnet sind, um die Anordnung der wenigstens zwei Fräswalzen (4; 4) zu variieren.

14. Fräse für Straßenoberflächen gemäß einem der vorangegangenen Ansprüche, des Weiteren eine Tiefenanpassung aufweisend.

15. Fräse für Straßenoberflächen gemäß einem der vorangegangenen Ansprüche, wobei die konkave Schale, welche ein Schneideelement (13) ausbildet, auf einem längeneinstellbaren Arm angeordnet ist, um die Tiefenanpassung (C) auszubilden.

Revendications

1. Fraiseuse de surface routière destinée à retirer de l'asphalte et/ou du bitume d'une surface routière, comprenant :

au moins un tambour de fraisage (4), qui, en cours d'utilisation de la fraiseuse de surface routière peut tourner autour d'un axe de rotation (8) positionné au moins approximativement à angle droit par rapport à la surface routière et qui comporte des éléments de fraisage (15) sur sa surface externe,

caractérisée par :

au moins une coupelle pouvant tourner librement ou entraînée de manière à pouvoir tourner (13) formant un élément de coupe sur le tambour de fraisage (4), sur le côté de celui-ci qui est orienté face à la surface routière en cours d'utilisation, laquelle coupelle (13) est concave et un bord périphérique de celle-ci est orientée vers la surface routière.

2. Fraiseuse de surface routière selon la revendication 1, dans laquelle l'élément de coupe (13) est agencé au-dessous du tambour de fraisage (4) du côté de l'axe de rotation (8).

3. Fraiseuse de surface routière selon la revendication 1 ou 2, dans laquelle la plage active de l'élément de coupe (13) s'étend vers une position au niveau de la paroi périphérique externe du tambour de fraisage (4) ou au-delà de cette dernière.

4. Fraiseuse de surface routière selon la revendication 1, 2 ou 3, comprenant en outre un dispositif d'entraînement qui est associé au tambour de fraisage (4) et qui, en fonctionnement, fait tourner le tambour de fraisage (4) autour de son axe de rotation (8).

5. Fraiseuse de surface routière selon au moins l'une des revendications précédentes, dans laquelle le tambour de fraisage (4) est agencé de manière à pouvoir tourner sur un support.

6. Fraiseuse de surface routière selon au moins l'une des revendications précédentes, dans laquelle le tambour de fraisage (4) est agencé sur un véhicule pouvant être déplacé (1) tel qu'une pelleteuse, un bulldozer, une excavatrice mobile, une chargeuse-pelleteuse sur roue ou un véhicule équipé de manière spécifique pour le fraisage de surfaces routières.

7. Fraiseuse de surface routière selon la revendication 6, dans laquelle le tambour de fraisage (4) est agencé de manière amovible sur le véhicule (1).

8. Fraiseuse de surface routière selon les revendications 5 et 6 ou 7, dans laquelle le support avec le ou les tambours de fraisage (4) au-dessus peut être agencé de manière amovible sur le véhicule (1) au moyen d'un coupleur.

9. Fraiseuse de surface routière selon les revendications 4 et 6, 7 ou 8, dans laquelle le véhicule (1) comprend un circuit hydraulique et le dispositif d'entraînement pour le tambour de fraisage (4) de la fraise comprend un moteur hydraulique qui peut être couplé au circuit hydraulique du véhicule (1).

10. Fraiseuse de surface routière selon au moins l'une des revendications précédentes, dans laquelle le tambour de fraisage (4) présente une forme divergente en direction de la surface routière, par exemple, la forme d'un tronc de cône.

11. Fraiseuse de surface routière selon au moins l'une des revendications précédentes, dans laquelle au moins deux tambours de fraisage (4 ; 4) sont agencés.

12. Fraiseuse de surface routière selon la revendication 11, dans laquelle les au moins deux tambours de fraisage (4 ; 4) sont agencés avec une disposition décalée suivant la direction du mouvement de la fraise.

13. Fraiseuse de surface routière selon la revendication 11 ou 12, dans laquelle au moins deux des tambours de fraisage (4) sont agencés sur une table tournante (16, 17) dans le but de modifier la disposition des au moins deux des tambours de fraisage (4 ; 4).

14. Fraiseuse de surface routière selon au moins l'une des revendications précédentes, comprenant en outre un dispositif de réglage de profondeur.

15. Fraiseuse de surface routière selon au moins l'une des revendications précédentes, dans laquelle la coupelle concave formant un élément de coupe (13) est agencée sur un bras réglable en longueur dans le but de former le dispositif de réglage de profondeur (C).

Drawing