EP0735192B1 - Dispositif de fraisage avec tambour de fraise pour enlever des revêtements routiers - Google Patents

Dispositif de fraisage avec tambour de fraise pour enlever des revêtements routiers Download PDF

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Publication number
EP0735192B1
EP0735192B1 EP96105032A EP96105032A EP0735192B1 EP 0735192 B1 EP0735192 B1 EP 0735192B1 EP 96105032 A EP96105032 A EP 96105032A EP 96105032 A EP96105032 A EP 96105032A EP 0735192 B1 EP0735192 B1 EP 0735192B1
Authority
EP
European Patent Office
Prior art keywords
road
milling drum
driving shaft
annular elements
elements
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
Application number
EP96105032A
Other languages
German (de)
English (en)
Other versions
EP0735192A2 (fr
EP0735192A3 (fr
Inventor
Luciano Gelai
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.)
Caterpillar Prodotti Stradali SRL
Original Assignee
Bitelli SpA
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 Bitelli SpA filed Critical Bitelli SpA
Publication of EP0735192A2 publication Critical patent/EP0735192A2/fr
Publication of EP0735192A3 publication Critical patent/EP0735192A3/fr
Application granted granted Critical
Publication of EP0735192B1 publication Critical patent/EP0735192B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits

Definitions

  • the invention concerns a road scarifying machine used for the removal of road surfacings, provided with a milling drum formed by modular elements.
  • road scarifyers are machines that are used for the removal of the asphalt surfacing which covers the roadways. They essentially comprise a wheel-mounted frame provided with a driving unit, with a driver's seat and with a milling drum put into contact with the road surfacing to be removed.
  • the milling drum presents a plurality of projecting parts which, during the rotation of the milling drum, crush the road surfacing.
  • the centrifugal force of the milling drum which is rotating discharges the debris resulting from the crushing on said conveyor belt which conveys it, for instance, to a lorry.
  • the road scarifying machines are manufactured according to different embodiments which differ from one another, not only because of the presence of the conveyor belt or the absence of it, but also because of the width of the milling drum which determines the type of work to which the machine can ultimately be applied. Therefore, it is clear that the road scarifying machines with milling drums having considerable widths are used, for instance, to perform works on motorways or freeways, while machines with milling drums having a limited width are used to perform works on roads presenting narrower carriageways.
  • the productivity of the work which is performed in fact, essentially depends on the width of the milling drum with which the machine is provided.
  • the milling drum consists of a fixed part, stably connected to the driving shaft which drives into rotation the milling drum itself, and of a removable part consisting of a pair of sectors presenting an essentially circular outer profile and provided with projecting elements, which are attached to the driving shaft, placed opposite to each other and on both sides of the fixed part.
  • US-A-2 155 889 discloses a road surfacing device with a series of cutter blades arranged side by side. Also DE-U-8 707 786 and DE-A-2 528 418 describe road machines with a rotor shaft having a plurality of annular modular elements suited to scarify the road.
  • EP-A-0 617 170 discloses a mobile apparatus with a drum consisting in a rotor shaft having diamond cut-off discs and spacer rings arranged in a row in alternative sequence.
  • the universal road scarifying machines of the mentioned type solve the problem only partially.
  • the available spare sections in fact, usually present a rather extensive width (a few dozens of centimeters) and, therefore, they permit to obtain a limited number of widths of milling drum, which also differ considerably from each other. Therefore, there is the inconvenience that the universal machines are not always able to realize the removal over the required width.
  • the present invention proposes to overcome all the mentioned inconveniences.
  • one of the purposes of the invention is to realize a road scarifying machine provided with a milling drum having a variable width, which, as compared with machines of the universal type equivalent to it, permits to vary the width of the milling drum more quickly.
  • Such a milling drum can be shaped according to a wider range of widths, as compared to that obtainable by using universal road scarifying machines with a milling drum consisting of sections.
  • said annular elements present a central hole, the profile of which matches the corresponding profile of the driving shaft which is attached to and projects from the frame of the road scarifying machine, in order to allow an easy assembly and removal of the annular elements themselves.
  • Said annular elements are coupled in a tight succession one after the other and each of them is angularly offset in relation to its adjacent annular element. Moreover, they are spaced from each other by means of a spacer which is interposed between two surfaces facing one another and belonging to two adjacent annular elements.
  • the road scarifying machine according to the invention provided with a modular milling drum having annular elements, permits a higher versatility of use as compared with equivalent machines, since the width of the milling drum is adjustable with much precision to the required width of the road surfacing which needs to be removed.
  • This is very advantageous, since each of said annular elements presents a rather limited width and, as a consequence, they have a limited weight, such as to permit a single operator to handle them easily.
  • the operator can then assemble them on and remove them from the driving shaft of the milling drum in shorter performance times, as compared with the times required by universal machines of the known type for the assembly and removal of the circular sections.
  • the road scarifying machine As can be observed in Fig. 1, the road scarifying machine according to the invention, indicated as a whole with 1, comprises a frame 2 mounted on wheels 3 which supports a driving unit 4 and a driver's seat, indicated as a whole with 5.
  • a milling drum 6 In the lower part of frame 2 there is a milling drum 6 which is connected to frame 2 and which is put into contact with the road surfacing to be removed 9 into which it penetrates by a depth 8, which essentially corresponds to the thickness of asphalt to be removed.
  • the road scarifying machine 1 which is being described is also provided with a conveyor belt 21, as can be observed, which immediately moves the crushed material away from the working area of the milling drum.
  • Said milling drum 6 is represented in better details in the axonometric representation of Fig. 2, wherein it can be observed that it is composed of a plurality of annular elements 61, each of them essentially shaped in the form of a prism, preferably a parellelepiped.
  • Each of said annular elements 61 is provided with a through-hole 62 and presents, in relation to a cutting plane arranged transversally to the axis 63 of said through-hole 62, an essentially square outer profile.
  • hole 62 of each of said annular elements 61 presents an octagonal profile suited to match a driving shaft 7 which, as can be also observed in better detail in the Figs. from 5 to 8, projects from and is connected to frame 2 through the interposition of motorizing means which consist, for instance, of a speed reducer 18 which is kinematically connected to the driving unit 4 which belongs to the road scarifying machine.
  • the octagonal shape is just one of the possible geometrical configurations suited to prevent the reciprocal idle rotation of the annular elements 61 on the driving shaft 7. Therefore, it is clear that said profiles can be of any type, including the circular shape. In that case they will have to be provided with one or more contrast elements such as keys, tabs or others, suited to prevent the reciprocal rotation.
  • the octagonal configuration which is described is given by way of illustration only.
  • each of said annular elements 61 is provided with milling elements 64 essentially arranged in correspondence with the corners of the annular element itself. Between each pair of adjacent rings, there is a spacer 65 which is used for obtaining the required milling width, by suitably spacing the annular elements 61 from one another. The presence of such spacers 65, however, is optional.
  • Said annular elements 61 are co-axially coupled outside the driving shaft 7, by arranging them facing one another in a tight succession one after the other and spaced from each other through the interposition of the possible spacer 65. They are also angularly offset in relation to one another so that, between anyone of the milling elements 64 of anyone of the annular elements 61, and the milling element belonging to the adjacent annular element, there is a staggering 66.
  • the driving shaft 7 is projecting from and attached to frame 2 of the machine, so as to facilitate the assembly of the annular elements 61 which can be assembled and removed quite easily by a single operator. It can be observed, in fact, that the thickness of each of said annular elements 61 is rather limited and, consequently, each annular presents a weight which can be easily handled by a single operator.
  • annular elements Once the annular elements have been coupled with the driving shaft 7 supporting them, they are locked into position through locking means, not represented and which are not described but they are locking means of the known type and they can consist, indifferently, of flanges, check pins and similar.
  • each of said annular elements permits, as has been illustrated with some examples in the Figs. from 5 to 8, to compose a milling drum having variable widths, within an extremely wide range of possible widths, all of them obtainable by matching together a different number of annular elements.
  • the user can then choose over which width the milling will be done on the ground within a higher number of possible widths, which are larger in quantity than those obtainable by using the universal road scarifying machines of the known type.
  • the milling drum having modular annular elements is applied to a road scarifying machine, indicated as a whole with 10, which is provided with a lateral conveyor belt 11 and with a transversal conveyor auger 12 suited to feed said conveyor belt 11.
  • Such a machine combines the advantage of a better control and smaller overall dimensions, due to the presence of the lateral conveyor belt, to the advantage of a versatility of use, due to the wider range of widths of the milling drum which can be realized and, therefore, to the higher number of milling widths obtainable.
  • the milling drum which belongs to the machine object of the present invention is composed, as has been said, of a plurality of annular elements facing one another and assembled on a single rotating shaft. Said drum can be assembled on any existing road scarifying machine of the known type, whether it is provided or not with a front, rear or lateral conveyor belt. Such a machine, will then be transformed into the road scarifying machine object of the present invention.
  • the dimensions of the annular elements equipping the milling drum of the road scarifying machine according to the invention may undergo modifications.
  • the hole for the coupling to the driving shaft as well as the profile of the driving shaft itself suited to be matched into said hole, it can also acquire a configuration differing from the described octagonal configuration such as it is represented in the drawings.

Claims (5)

  1. Un scarificateur (1;10) pour l'enlèvement de surfaces routières, comprenant:
    un châssis (2) monté sur roues (3) qui soutient au moins une unité d'actionnement (4) et au moins un siège pour le pilote (5);
    un tambour de fraisage (6) mis en contact avec la surface routière (9) à enlever et supporté par un arbre moteur (7) relié audit châssis (2) et porté en rotation par des moyens de rotation, ledit tambour de fraisage (6) étant composé d'une pluralité d'éléments amovibles annulaires modulaires (61) l'un en face de l'autre en succession étroite un après l'autre et reliés de manière coaxiale avec ledit arbre moteur (7), lesdits éléments annulaires (61) étant équipés d'éléments saillants (64) indiqués pour érafler et briser la surface routière (9) à enlever, chacun desdits éléments annulaires (61) étant essentiellement façonné en forme de parallélépipède muni d'un trou passant (62) pour le raccordement audit arbre moteur (7), caractérisé en ce que ledit parallélépipède présente un profil extérieur essentiellement carré sur un plan de coupe transversal par rapport à l'axe (63) dudit trou passant (62), lesdits éléments saillants (64) étant positionnés au niveau des angles dudit profil extérieur essentiellement carré.
  2. Un scarificateur (1; 10) selon la revendication 1, caractérisé en ce que ledit arbre moteur (7) est relié et déborde du châssis (2) dudit scarificateur.
  3. Un scarificateur (1; 10) selon la revendication 1, caractérisé en ce que les profils transversaux dudit arbre moteur (7) et dudit trou passant (62) percé dans chacun desdits éléments annulaires (61) sont des profils conjugués indiqués pour empêcher la rotation réciproque entre ledit arbre (7) et lesdits éléments annulaires (61).
  4. Un scarificateur (1; 10) selon la revendication 1, caractérisé en ce que lesdits éléments annulaires (61) qui composent ledit tambour de fraisage (6) sont espacés entre eux par l'interposition d'éléments d'espacement (65).
  5. Un scarificateur (1; 10) selon la revendication 1, caractérisé en ce que chacun desdits éléments annulaires (61) est assemblé sur l'arbre moteur (7) correspondant et est décalé de manière angulaire par rapport à son élément annulaire adjacent (61).
EP96105032A 1995-03-31 1996-03-29 Dispositif de fraisage avec tambour de fraise pour enlever des revêtements routiers Expired - Lifetime EP0735192B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI950053 1995-03-31
IT95VI000053A IT1280300B1 (it) 1995-03-31 1995-03-31 Macchina scarificatrice con tamburo fresante di tipo perfezionato per la rimozione di manti stradali

Publications (3)

Publication Number Publication Date
EP0735192A2 EP0735192A2 (fr) 1996-10-02
EP0735192A3 EP0735192A3 (fr) 1996-12-18
EP0735192B1 true EP0735192B1 (fr) 1999-12-01

Family

ID=11425734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105032A Expired - Lifetime EP0735192B1 (fr) 1995-03-31 1996-03-29 Dispositif de fraisage avec tambour de fraise pour enlever des revêtements routiers

Country Status (5)

Country Link
EP (1) EP0735192B1 (fr)
AT (1) ATE187217T1 (fr)
DE (1) DE69605345T2 (fr)
ES (1) ES2140740T3 (fr)
IT (1) IT1280300B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1292984B1 (it) * 1997-04-28 1999-02-11 Bitelli Spa Tamburo fresante di tipo perfezionato per macchine scarificatrici.
US6116699A (en) * 1998-07-29 2000-09-12 Clark Equipment Company Planer with edge planing capability
GB0224024D0 (en) * 2002-10-16 2002-11-27 Scurlock William R Means for the removal of road markings
CN113622274B (zh) * 2021-06-25 2022-07-05 中建二局土木工程集团有限公司 市政道路旧路铣刨装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2155889A (en) * 1937-11-09 1939-04-25 Earl J Branson Road surfacing device
DE2528418A1 (de) * 1975-06-26 1977-01-20 Errut Prod Ltd Vorrichtung zum schneiden von nuten, insbesondere in strassenbelaege
DE8707786U1 (fr) * 1987-06-01 1987-08-13 Marks Gmbh, 4353 Oer-Erkenschwick, De
DE3737045C2 (de) * 1987-10-31 1994-04-07 Crones & Co Gmbh Motorisch betreibbares Handgerät zum Fräsen von Nuten in Wänden od. dgl.
CH688865A5 (de) * 1993-02-19 1998-04-30 Pamag Ag Bodenflächenbearbeitungsgerät.

Also Published As

Publication number Publication date
DE69605345T2 (de) 2000-07-27
ITVI950053A0 (it) 1995-03-31
EP0735192A2 (fr) 1996-10-02
ITVI950053A1 (it) 1996-10-01
DE69605345D1 (de) 2000-01-05
EP0735192A3 (fr) 1996-12-18
ES2140740T3 (es) 2000-03-01
ATE187217T1 (de) 1999-12-15
IT1280300B1 (it) 1998-01-08

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