EP3516119A1 - Outil rotatif pour la coupe de micro-tranchées - Google Patents

Outil rotatif pour la coupe de micro-tranchées

Info

Publication number
EP3516119A1
EP3516119A1 EP17781190.8A EP17781190A EP3516119A1 EP 3516119 A1 EP3516119 A1 EP 3516119A1 EP 17781190 A EP17781190 A EP 17781190A EP 3516119 A1 EP3516119 A1 EP 3516119A1
Authority
EP
European Patent Office
Prior art keywords
peaks
tool
peak
peripheral edge
secured
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.)
Withdrawn
Application number
EP17781190.8A
Other languages
German (de)
English (en)
Inventor
Alberto LUCATO
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.)
Garbin Group SRL
Original Assignee
Garbin Group SRL
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 Garbin Group SRL filed Critical Garbin Group SRL
Publication of EP3516119A1 publication Critical patent/EP3516119A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E01C23/09—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • E01C23/0926—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
    • E01C23/0933—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/241—Digging wheels; Digging elements of wheels; Drives for wheels digging wheels
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements

Definitions

  • the present invention generally finds application in the field of digging devices and tools and particularly relates to a rotating tool for cutting microtrenches.
  • Such machines are designed for laying fiber optic cables and are required to have a very small width, for less invasive digging and reconstruction of the road surface.
  • These tools typically comprise a disk-like body which rotates about a central axis, and a plurality of trenching peaks rigidly joined to the peripheral edge of the body. These peaks have a very small size, to limit the width of the trench.
  • microtrenching tools have been developed, which comprise larger trenching peaks.
  • WO201 5/073821 discloses a disk-shaped microtrenching tool comprising a plurality of trenching peaks angularly arranged along its peripheral edge.
  • the trenching peaks of this tool have a shank diameter of 2 mm and diverge from a central plane, extending away from each other.
  • a first drawback of this arrangement is that this tool can only partially limit the width of the trench.
  • a further drawback is that the particular shape and location of the peaks can only partially limit their wear during trenching.
  • the object of the present invention is to obviate the above drawback, by providing a rotating tool for cutting microtrenches that is highly efficient and relatively cost-effective.
  • a particular object of the present invention is to provide a rotating tool for cutting microtrenches, that can dig microtrenches as narrow as 5 cm or less.
  • a further object of the present invention is to provide a rotating tool for cutting microtrenches, that can limit the wear of the trenching peaks and requires less maintenance.
  • Yet another object of the present invention is to provide a rotating tool for cutting microtrenches, that is exposed to very little vibration upon interaction with the road surface.
  • FIG. 1 is a lateral enlarged view of the rotating tool for cutting microtrenches of the invention
  • FIG. 2 is a front view of the tool of Fig. 1 ;
  • FIG. 3 is an enlarged front view of the tool of Fig. 2.
  • a rotary trenching tool 1 particularly for digging microtrenches for fiber optic deployment.
  • the microtrenches formed by the tool 1 of the present invention may have a maximum width of 5 cm or less.
  • the tool 1 will be adapted to be rotatably mounted to a known digging machine or the like, not shown, for forming microtrenches in the road surface.
  • the machine may be designed for use in trenching surfaces other than asphalt, such as for example concrete, and comprises motor means, preferably of hydraulic type for driving the tool 1 .
  • the tool 1 comprises a rotatable body 2 with a central axis X and a middle plane ⁇ perpendicular to the axis X and having a circular peripheral edge 3.
  • the body 2 is designed to be secured via a keyed hub 4 to a drive spindle of the digging machine, not shown.
  • the edge 3 may have a maximum thickness of 3 cm and the body 2 that is fitted to the digging machine may be protected by a matingly shaped casing for collecting debris, not shown.
  • the tool 1 comprises at least one first trenching peak 5 which is adapted to cut a rigid substrate, e.g. the road surface, for digging a microtrench therein.
  • the first peak 5 is secured to the circular peripheral edge 3 in an at least partially radial position and has a predetermined maximum width .
  • the first peak 5 may be rotatably inserted into a respective support 6, which is secured to the peripheral edge 3 of the body 2 by welding.
  • the peak 5 may be made of tungsten carbide with special steel.
  • the tool 1 comprises at least one second trenching peak 7 differing from the first peak, and having a smaller maximum width l 2 . Furthermore, this second peak 7 is adapted to be secured to the peripheral edge 3 of the body in an angularly offset position relative to the first peak 5.
  • the maximum width of the first peak 5 may be 1 9.2mm and maximum width l 2 of the second peak 7 may be 14mm.
  • the tool may comprise a plurality of first trenching peaks 5 alternating with a plurality of second trenching peaks 7 and each of them is rotatably inserted in a respective support 6, 8 which is adapted to be secured to the peripheral edge 3 of the body 2.
  • the trenching tool 1 may comprise sets 5' of first peaks 5 intervening between sets T of second peaks 7 and each set 5', T may respectively comprise at least two first peaks 5 and at least two second peaks 7, in angularly offset relationship.
  • each first set 5' comprises three first peaks 5 and each second set T comprises three second peaks 7.
  • the three first peaks 5 of each set 5' may diverge from the center plane ⁇ of the body 2 and project therefrom at increasing distances di , d 2 , d 3 respectively equal to 5mm, 14mm and 21 mm.
  • the three second peaks 7 of each set T may diverge from the middle plane ⁇ and project therefrom at distances d 4 , d 5 respectively equal to 14mm and 25mm. That is, the two second peaks 7 of each set 7', particularly the end peaks, diverge from the middle plane ⁇ at equal distances ds.
  • both two successive sets 5', 5" of first peaks 5 and two successive sets 7', 7" of second peaks 7 diverge from the middle plane ⁇ with opposed divergence angles.
  • first peaks 5 of each first set 5' may also have opposed divergence angles in alternating relationship.
  • first 5 and second 7 peaks can be achieved by welding the respective first 6 and second 8 support at predetermined distances from the middle plane ⁇ , corresponding to those listed above.
  • the sets T of second peaks 7 enlarge the previously dug trench according to their respective divergence angles, to a microtrench width of 5 cm.
  • one set 7' of second peaks 7 may widen the trench by 0.5cm on one side of the middle plane ⁇ , and the next set 7" of second peaks 7 may widen the trench by additional 0.5cm on the opposite side from the middle plane ⁇ .
  • the sets T of second peaks 7, and particularly their supports 8, may be welded to respective unitary bases 9 that are designed to be secured to the circular peripheral edge 3 of the body and have a predetermined height h.
  • first peaks 5 and the second peaks may be welded to respective unitary bases 9 that are designed to be secured to the circular peripheral edge 3 of the body and have a predetermined height h.
  • the trenching tool of the invention is susceptible to a number of changes and variants, within the inventive principle disclosed in the appended claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Road Repair (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne un outil rotatif, pour la coupe de micro-tranchées (1), qui comprend un corps rotatif discoïde (2) ayant un axe central (X) et conçu pour être fixé à une broche d'entraînement d'une machine d'excavation ou autre, et un bord périphérique circulaire (3), au moins un premier pic de tranchée (5) étant conçu pour graver un substrat rigide pour la coupe d'une micro-tranchée, qui est fixée au bord périphérique circulaire (3) dans une position au moins partiellement radiale dont la largeur maximale est prédéterminée (h). L'outil (1) comprend également un second pic d'excavation (7) différent du premier pic (5), dont la largeur maximale (l2) est inférieure à celle de ce dernier. Le second pic (7) est fixé au bord périphérique (3) dans une position angulairement décalée par rapport au premier pic (5).
EP17781190.8A 2016-09-21 2017-09-21 Outil rotatif pour la coupe de micro-tranchées Withdrawn EP3516119A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102016000094651A IT201600094651A1 (it) 2016-09-21 2016-09-21 Utensile rotante per lo scavo di microtrincee
PCT/IB2017/055726 WO2018055543A1 (fr) 2016-09-21 2017-09-21 Outil rotatif pour la coupe de micro-tranchées

Publications (1)

Publication Number Publication Date
EP3516119A1 true EP3516119A1 (fr) 2019-07-31

Family

ID=57909917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17781190.8A Withdrawn EP3516119A1 (fr) 2016-09-21 2017-09-21 Outil rotatif pour la coupe de micro-tranchées

Country Status (3)

Country Link
EP (1) EP3516119A1 (fr)
IT (1) IT201600094651A1 (fr)
WO (1) WO2018055543A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900007842A1 (it) 2019-06-03 2020-12-03 Garbin Group S R L Una macchina escavatrice semovente per lo scavo di micro-trincee
EP4069941A1 (fr) * 2019-12-04 2022-10-12 Element Six (UK) Limited Débiteuse à disque
GB202107142D0 (en) * 2021-05-19 2021-06-30 Element Six Uk Ltd Disc cutter
GB202107143D0 (en) * 2021-05-19 2021-06-30 Element Six Uk Ltd Disc cutter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2930578C (fr) * 2013-11-15 2020-06-09 Vermeer Manufacturing Company Systeme de dents coupantes

Also Published As

Publication number Publication date
WO2018055543A1 (fr) 2018-03-29
IT201600094651A1 (it) 2018-03-21

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