EP1350893A1 - Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder - Google Patents

Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder Download PDF

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Publication number
EP1350893A1
EP1350893A1 EP02290843A EP02290843A EP1350893A1 EP 1350893 A1 EP1350893 A1 EP 1350893A1 EP 02290843 A EP02290843 A EP 02290843A EP 02290843 A EP02290843 A EP 02290843A EP 1350893 A1 EP1350893 A1 EP 1350893A1
Authority
EP
European Patent Office
Prior art keywords
core
teeth
tooth
piston
ground
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.)
Granted
Application number
EP02290843A
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English (en)
French (fr)
Other versions
EP1350893B1 (de
Inventor
André Julien Lamaire
Lucien Boris Devic-Bassaget
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.)
Spie Fondations
Original Assignee
Spie Fondations
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27838167&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1350893(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Spie Fondations filed Critical Spie Fondations
Priority to EP20020290843 priority Critical patent/EP1350893B1/de
Priority to DE60206355T priority patent/DE60206355D1/de
Publication of EP1350893A1 publication Critical patent/EP1350893A1/de
Application granted granted Critical
Publication of EP1350893B1 publication Critical patent/EP1350893B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • 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
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits

Definitions

  • the invention relates to a trench drilling wheel in the ground, as well as an excavator cutter comprising at least two of these wheels.
  • Excavator wheel includes a soul-shaped frame central on which, on either side of the core, drums are mounted rotary bearing teeth at their periphery to attack the ground. Blade also allows the transfer of hydraulic energy, for example drive motor included in the wheel.
  • a strawberry is made preferably two toothed wheels rotating in opposite directions. In operation, the cutter drills the soil in a drilling fluid, the rubble formed being pumped through a strainer.
  • a non-disaggregated projection forms between the drums, under the part of the central core located opposite the ground. This protruding terrain prevents wheel progression in soil particularly hard or viscous.
  • a first type of solution illustrated by the document EP-0 258 122, provides a special configuration of the part of the core located facing the ground. However, this technique does not allow attacking hard floors and requires frequent replacement of worn parts.
  • the invention aims to solve the aforementioned drawbacks, by proposing a drilling wheel and an excavating cutter for digging trenches in the ground that are both reliable and robust, which can dig trenches in any type of soil, and allows to reach superior yields.
  • the invention plans to overcome mechanical actuation of the teeth pivoting using a fluid hydraulic energy transfer.
  • the invention also relates to an excavating cutter for dig trenches in the ground, including an even number of wheels drilling above presented, the wheels being grouped in pairs and mounted in opposite rotation during normal operation.
  • Figure 1 a wheel 1 for digging cut into the ground by milling. This wheel is intended to equip a machine (not shown) such as a two-wheel excavator cutter mounted in reverse rotation.
  • a machine not shown
  • a two-wheel excavator cutter mounted in reverse rotation.
  • the wheel 1 is shown in the working position in a trench 2 in progress.
  • the wheel includes a frame 3 fixed to the machine, a core 4 having a central opening and a structure with symmetry plane with respect to a median plane P extending perpendicular to the bottom 2a of the trench, as well as two coaxial hubs of axis X substantially perpendicular to the core 4 and formed on either side of it.
  • the core 4 defines an extraction direction E according to which the wheel is introduced into the ground to dig trench 2.
  • the terms “top”, “Bottom”, “upper”, “lower” are defined with respect to this direction.
  • the core includes a high portion 4a facing the frame 3, as well as a lower end portion 4b, facing the bottom 2a of the trench 2.
  • the wheel 1 also includes two drums 6 carried by the hubs 5 and driven by a motor (not shown) included in the central opening of the soul.
  • the drums 6 extend on either side of the core 4 and are mounted in rotation about a common axis substantially coincides with the X axis of the hubs 5.
  • Each drum 6 is provided on its outer surface 7e, with teeth 8 to dig the ground. Teeth extend radially, those at most close to the soul being referenced 9.
  • the teeth 8, 9 are distributed, for example in staggered rows or in propeller, to cover substantially the entire surface 7 of the drum 6 and work the ground evenly.
  • the teeth 9 most close to the core 4 are movable relative to the drum 6.
  • the teeth 9 are movable between a high withdrawal position, in which they are spaced from the median plane P of the soul 4, and a low cutting position, in which they are located at the right of the core end 4b.
  • two teeth pivoting 9 are provided in the nonlimiting exemplary embodiment. These teeth are mounted around a pivot 10, of axis A substantially parallel to the tangent to the surface of the drum 6 at the point of contact in the direction radial.
  • the pivot 10 is mounted in a support 10a secured to the drum.
  • each tooth 9 can pivot between a withdrawal position in which it is spaced from the core 4 at the upper portion 4a of the core opposite the frame 3, and a cutting position in which it is in line with its end portion 4b.
  • the control means include pistons 12 sliding mounted, in a radial direction in the embodiment illustrated in FIGS. 1 to 4, and connected by a hydraulic line 15, illustrated in Figure 2.
  • a hydraulic accumulator 11 with non-return valve 11a is mounted on the hydraulic circuit to compensate for fluid losses
  • each piston slides along O-rings 12a arranged in a bore through a housing 13 fitted into the wall 14 of the drum 6.
  • the piston 12 slides in the bore 13 of one under the action of the pressure transmitted by the fluid (an oil in the example illustrated) circulating in the hydraulic line 15 passing through the bottom of the bore through an orifice 13a, arranged under the piston.
  • Line 15 is formed between hub 5 and internal surface 7i of the drum 6, and the piston slides between a position protruding and a retracted position.
  • the tooth 9 is formed of a support 18 and a cutting element 9a, the support having a lateral face 17, substantially facing the core, and a rear face 19, facing the drum.
  • tooth 6 in the high position causes, by pressure transmission through line 15, radial ejection of the piston 12 in projecting position ( Figure 4) relative to the outer surface 7e of the drum 6.
  • the ejection of the piston 12 rotates the tooth 9 towards its position of cut in line with the lower end 4b of the core 4.
  • the piston 12 bears against the rear face 19 of the support, by exerting on the support 18 a force F. This force creates a driving torque around the pivot 10, rotating the tooth 9 under the core 4.
  • the pistons 12 are slidably mounted in an axial direction, that is to say in a bore made in a support 20.
  • This support is secured to the external face of the drum 6 parallel to the common axis X.
  • the support 18 has a projection 21 forming a housing on which the piston 12. Under these conditions, tooth 9 rotates around pivot 10 between its withdrawal position ( Figure 5) by the thrust exerted by pressing against the ramp 16, and its cutting position ( Figure 6) by the thrust exerted by the fluid hydraulic, under conditions similar to those mentioned above in reference to Figures 4 and 5.
  • the piston 12 advantageously has at least one head partially spherical 12b opposite tooth 9, to adapt to the inclination of the support of tooth 9 and limit the contact surface.
  • the invention is not limited to the exemplary embodiments described and represented.
  • the holder and the cutting element of teeth may form a single piece.
  • gaskets may be provided between the rear face of the tooth and the outer surface of the drum.
  • the pistons can be mounted inclined by relative to the axis of the hubs at angles of inclination which can also suitable, the pivoting teeth can be released by means other than a ramp, for example studs, ribs or any adapted outgrowth.
  • any form of ramp other than Vee could agree if appropriate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
EP20020290843 2002-04-05 2002-04-05 Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder Revoked EP1350893B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20020290843 EP1350893B1 (de) 2002-04-05 2002-04-05 Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder
DE60206355T DE60206355D1 (de) 2002-04-05 2002-04-05 Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020290843 EP1350893B1 (de) 2002-04-05 2002-04-05 Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder

Publications (2)

Publication Number Publication Date
EP1350893A1 true EP1350893A1 (de) 2003-10-08
EP1350893B1 EP1350893B1 (de) 2005-09-28

Family

ID=27838167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020290843 Revoked EP1350893B1 (de) 2002-04-05 2002-04-05 Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder

Country Status (2)

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EP (1) EP1350893B1 (de)
DE (1) DE60206355D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548192A1 (de) * 2003-12-23 2005-06-29 BAUER Maschinen GmbH Klappzahn
EP3128126A1 (de) * 2015-08-06 2017-02-08 Caterpillar Global Mining Europe GmbH Schneidtrommel mit schwenkbarer schneideinheit
EP4375423A1 (de) * 2022-11-28 2024-05-29 Liebherr-Werk Nenzing GmbH Schlitzwandfräse

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391472A (en) * 1980-10-17 1983-07-05 The Cincinnati Mine Machinery Company Core eliminator for mining, road working or earth moving machinery
US4718731A (en) * 1985-06-03 1988-01-12 Karl Bauer Spezialtiefbau Gmbh & Co. Kg Milling fixture for a slotted wall milling cutter
EP0253726A1 (de) * 1986-07-15 1988-01-20 SOLETANCHE Société Anonyme dite: Vorrichtung zum Ausheben von Gräben mit Fräsern
US4793732A (en) * 1988-01-21 1988-12-27 Jordon Robert L Pavement slot cutter
US4800967A (en) * 1986-08-07 1989-01-31 Soletanche Drilling machine for digging trenches in the ground
US4834197A (en) * 1987-05-13 1989-05-30 Bauer Spezialtiefbau Gmbh Trench cutter
FR2805552A1 (fr) * 2000-02-29 2001-08-31 Spie Fond S Outil pour creuser des tranchees dans le sol et engin tel qu'une excavatrice a fraise(s) comprenant un tel outil

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391472A (en) * 1980-10-17 1983-07-05 The Cincinnati Mine Machinery Company Core eliminator for mining, road working or earth moving machinery
US4718731A (en) * 1985-06-03 1988-01-12 Karl Bauer Spezialtiefbau Gmbh & Co. Kg Milling fixture for a slotted wall milling cutter
EP0253726A1 (de) * 1986-07-15 1988-01-20 SOLETANCHE Société Anonyme dite: Vorrichtung zum Ausheben von Gräben mit Fräsern
US4800967A (en) * 1986-08-07 1989-01-31 Soletanche Drilling machine for digging trenches in the ground
US4834197A (en) * 1987-05-13 1989-05-30 Bauer Spezialtiefbau Gmbh Trench cutter
US4793732A (en) * 1988-01-21 1988-12-27 Jordon Robert L Pavement slot cutter
FR2805552A1 (fr) * 2000-02-29 2001-08-31 Spie Fond S Outil pour creuser des tranchees dans le sol et engin tel qu'une excavatrice a fraise(s) comprenant un tel outil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548192A1 (de) * 2003-12-23 2005-06-29 BAUER Maschinen GmbH Klappzahn
US7278228B2 (en) 2003-12-23 2007-10-09 Bauer Maschinen Gmbh Hinged tooth
CN100385079C (zh) * 2003-12-23 2008-04-30 包尔机械有限公司 一种切割轮的铰接的切割齿、切割轮和挖沟机
EP3128126A1 (de) * 2015-08-06 2017-02-08 Caterpillar Global Mining Europe GmbH Schneidtrommel mit schwenkbarer schneideinheit
WO2017021007A1 (en) * 2015-08-06 2017-02-09 Caterpillar Global Mining Europe Gmbh Cutting drum with pivot cutter unit
EP4375423A1 (de) * 2022-11-28 2024-05-29 Liebherr-Werk Nenzing GmbH Schlitzwandfräse

Also Published As

Publication number Publication date
DE60206355D1 (de) 2006-02-09
EP1350893B1 (de) 2005-09-28

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