EP0258122B1 - Fräsvorrichtung zum Ausheben von Graben im Boden - Google Patents

Fräsvorrichtung zum Ausheben von Graben im Boden Download PDF

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Publication number
EP0258122B1
EP0258122B1 EP87401830A EP87401830A EP0258122B1 EP 0258122 B1 EP0258122 B1 EP 0258122B1 EP 87401830 A EP87401830 A EP 87401830A EP 87401830 A EP87401830 A EP 87401830A EP 0258122 B1 EP0258122 B1 EP 0258122B1
Authority
EP
European Patent Office
Prior art keywords
plate
drums
ground
milling
portions
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
EP87401830A
Other languages
English (en)
French (fr)
Other versions
EP0258122A1 (de
Inventor
Philippe Chagnot
Jean-Pierre Schreiber
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.)
Soletanche SA
Original Assignee
Soletanche SA
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 Soletanche SA filed Critical Soletanche SA
Priority to AT87401830T priority Critical patent/ATE49432T1/de
Publication of EP0258122A1 publication Critical patent/EP0258122A1/de
Application granted granted Critical
Publication of EP0258122B1 publication Critical patent/EP0258122B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to a milling machine for digging trenches in the ground, and more particularly such a machine of the type comprising at least one substantially vertical support plate on either side of which two milling drums are rotatably mounted around an axis substantially perpendicular to the plate.
  • This thickness of the support plate creates difficulties during the construction of the trench. Indeed, the milling tools mounted on the two drums on the side of the support plate must be sufficiently spaced from each other to allow the passage of this plate during rotation of the drums. This results in the formation of a step at the bottom of the trench, a width generally at least equal to that of the plate.
  • the lower edge of the support plate abuts on this step, and can therefore prevent drilling progress.
  • Circular grooves have also been made in the support plate, centered on the axis of the drums, so that the milling tools fixedly mounted on the drums are spaced apart by a distance less than the thickness of the plate (cf. US-A 3,894,587).
  • This solution has proved satisfactory.
  • the plate thicknesses currently used the fact remains that the step remains of sufficient size to withstand the weight of the milling machine exerted through the lower surfaces of the edge of the support plate.
  • the present invention aims to provide a different solution to the problem set out above, possibly in combination with the means already known.
  • the invention relates to a milling machine for digging trenches in the ground, of the type comprising at least one substantially vertical support plate on either side of which two milling drums are rotatably mounted around of an axis substantially perpendicular to the plate, characterized in that the edge surfaces of said plate facing downwards have parts inclined with respect to the direction perpendicular to said plate, going from one of the faces of the plate to 'on its other side.
  • the weight of the milling machine is transmitted to the step through these inclined parts, which therefore exert on the step a component of lateral force which tends to break it. Consequently, independently of the means possibly making it possible to reduce the thickness of the step, the present invention makes it easier to disaggregate this step and to ensure better penetration of the milling machine.
  • the lower edge of said plate may for example be substantially semi-circular, said inclined parts being arranged in successive sectors of said lower edge.
  • a plurality of alternately inclined parts are provided on each side of the plate.
  • the lateral forces exerted by the step on the milling machine can have a substantially zero lateral component, which avoids deviations of the machine and therefore ensures the verticality of the trench.
  • the milling machine shown in Figure 1 comprises in known manner a frame 1 at the bottom of which are mounted two milling drums 2 by means of vertical support plates 3.
  • the axes 4 of rotation of the drums are perpendicular to the plates 3.
  • hydraulic motors 5 are mounted on the plates 3 and have their output shafts integral with the drums 2 so as to rotate them in the opposite direction, in the direction of the arrows 6.
  • the disaggregated soil by the drums 2 is brought back towards the lateral axis 7 of the milling machine where they are sucked by a suction nozzle 8.
  • the milling drums 2 carry at their periphery milling peaks 9 which ensure the disintegration of the ground during the rotation of the drums.
  • the peaks 9a closest to the plate 3 are inclined towards the transverse axis 10 of this plate so as to be as close as possible.
  • step 11 at the bottom of the trench 12, step whose thickness is at least equal to the thickness of the plate 3, and on which the lower edge of the plate 3 abuts during the descent of the machine.
  • each plate 3 which, in this case, is semi-circular, has inclined surfaces 13. These surfaces are inclined alternately on either side of the axis 10 of the plate 3 along successive sectors. Each inclined surface 13, for example at 45 ° , leaves from one of the faces of the plate 3 to its other face.
  • the weight of the milling machine is reflected on the step 11, on the one hand by transverse forces according to arrow 14 in FIG. 2, and on the other hand by torsional forces according to arrows 15 in the Figure 3. These efforts cause the rupture of the step 11 so that it can not oppose the progress of milling the trench.
  • milling drums which have been described as driven by hydraulic motors located in their hubs, can be driven by any other means, for example by means of chains connected to motors arranged in the frame.

Claims (3)

1. Fräsvorrichtung für das Fräsen eines Bodenschlitzes, - mit zumindest einer im wesentlichen vertikalen Tragplatte (3) und mit zwei FrästrommeIn (2), die beidseits der Tragplatte (3) rotierbar um eine zur Tragplatte (3) im wesentlichen senkrechte Achse (4) gelagert sind, dadurch gekennzeichnet, daß die nach unten weisende Stirnfläche der Tragplatte Abschrägungen (13) aufweist, die schräg zur Vertikalen verlaufen und sich von einer Oberfläche der Tragplatte (3) zur anderen erstrecken.
2. Fräsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die nach unten weisende Stirnfläche der Tragplatte (3) im wesentlichen halbkreisförmig geformt ist, und daß die Abschrägungen (13) sektorartig aufeinanderfolgen.
3. Fräsvorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Tragplatte (3) eine Mehrzahl von Abschrägungen (13) aufweist, die mit alternierender Richtung der Schrägung aufeinanderfolgen.
EP87401830A 1986-08-07 1987-08-06 Fräsvorrichtung zum Ausheben von Graben im Boden Expired - Lifetime EP0258122B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401830T ATE49432T1 (de) 1986-08-07 1987-08-06 Fraesvorrichtung zum ausheben von graben im boden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611460A FR2602530B1 (fr) 1986-08-07 1986-08-07 Engin de fraisage pour creuser des tranchees dans le sol
FR8611460 1986-08-07

Publications (2)

Publication Number Publication Date
EP0258122A1 EP0258122A1 (de) 1988-03-02
EP0258122B1 true EP0258122B1 (de) 1990-01-10

Family

ID=9338126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401830A Expired - Lifetime EP0258122B1 (de) 1986-08-07 1987-08-06 Fräsvorrichtung zum Ausheben von Graben im Boden

Country Status (9)

Country Link
US (1) US4800967A (de)
EP (1) EP0258122B1 (de)
JP (1) JPS6344030A (de)
AT (1) ATE49432T1 (de)
CY (1) CY1685A (de)
DE (2) DE258122T1 (de)
FR (1) FR2602530B1 (de)
HK (1) HK76793A (de)
SG (1) SG129292G (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618172B1 (fr) * 1987-07-16 1989-11-17 Soletanche Engin de fraisage pour creuser des tranchees dans le sol.
DE60206355D1 (de) * 2002-04-05 2006-02-09 Spie Fond S Cergy Pontoise Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder
FR2862336B1 (fr) * 2003-11-18 2006-03-17 Cie Du Sol Machine de forage a outils rotatifs
DE502004007221D1 (de) * 2004-03-26 2008-07-03 Bauer Maschinen Gmbh Schlitzwandfräse
EP1640509B2 (de) * 2004-08-23 2014-03-05 BAUER Maschinen GmbH Vorrichtung und Verfahren zum Erstellen einer Schlitzwand im Erdboden
FR2899608B1 (fr) * 2006-04-06 2010-04-16 Cie Du Sol Outillage de forage
FR2904338B1 (fr) * 2006-07-28 2011-03-04 Cie Du Sol Tete de coupe pour machine d'excavation
EP2378002B1 (de) * 2010-04-16 2013-07-17 BAUER Maschinen GmbH Fräsvorrichtung zum Erstellen vertikal verlaufender Schlitze im Boden
CN102286992A (zh) * 2011-02-14 2011-12-21 张永忠 双潜水电机锯槽机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750669A (en) * 1955-06-28 1956-06-19 Hohmann Joseph William Frozen food cutter
US2895218A (en) * 1956-11-26 1959-07-21 Petzoldt Werner Knife for domestic or trade use
FR1481221A (fr) * 1966-04-01 1967-05-19 Nouvelle machine à creuser les fossés
US3681863A (en) * 1970-07-14 1972-08-08 Leonid Nikolaevich Smirnov Wheel excavators for digging channels and trenches having variably angled slopes
ES420924A1 (es) * 1972-12-14 1976-04-01 Hydrosol Dispositivo de perforacion.
DE3424999C2 (de) * 1984-07-06 1994-01-13 Bauer Spezialtiefbau Schlitzwandfräse
DE3519774A1 (de) * 1985-06-03 1986-12-04 Karl Bauer Spezialtiefbau GmbH & Co KG, 8898 Schrobenhausen Fraesvorrichtung fuer eine schlitzwandfraese

Also Published As

Publication number Publication date
CY1685A (en) 1993-10-10
EP0258122A1 (de) 1988-03-02
FR2602530B1 (fr) 1989-06-30
SG129292G (en) 1993-04-16
HK76793A (en) 1993-08-06
ATE49432T1 (de) 1990-01-15
JPS6344030A (ja) 1988-02-25
DE3761384D1 (de) 1990-02-15
FR2602530A1 (fr) 1988-02-12
US4800967A (en) 1989-01-31
DE258122T1 (de) 1988-09-22

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