EP1882782A1 - Fräskopf für ein Erdaushubgerät - Google Patents

Fräskopf für ein Erdaushubgerät Download PDF

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Publication number
EP1882782A1
EP1882782A1 EP07112941A EP07112941A EP1882782A1 EP 1882782 A1 EP1882782 A1 EP 1882782A1 EP 07112941 A EP07112941 A EP 07112941A EP 07112941 A EP07112941 A EP 07112941A EP 1882782 A1 EP1882782 A1 EP 1882782A1
Authority
EP
European Patent Office
Prior art keywords
motor
cutting head
hydraulic motor
pipes
mounting
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
EP07112941A
Other languages
English (en)
French (fr)
Other versions
EP1882782B1 (de
Inventor
Philippe Chagnot
Jean-Claude Riglet
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 Freyssinet SA
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP1882782A1 publication Critical patent/EP1882782A1/de
Application granted granted Critical
Publication of EP1882782B1 publication Critical patent/EP1882782B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/16—Machines for digging other holes in the soil
    • E02F5/20—Machines for digging other holes in the soil for vertical holes
    • 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 cutting head for an excavating machine usually referred to as a milling cutter.
  • Cutting-type excavating machines are most often used to make trenches of relatively large depth, up to 100 meters, in the soil, and of relatively small width relative to said depth, the width typically being between 500 mm. and 1500 mm.
  • One of the interests of these machines is to allow the realization of such trenches of significant depth that meet stringent verticality criteria.
  • the entire trench is obtained by successive digging of juxtaposed panels.
  • the cutters are constituted by a relatively large frame which provides mechanical guidance of the excavating machine as the trench is made. At the lower end of the frame is fixed a cutting head.
  • the cutting head is usually constituted by two milling motors usually carrying each a pair of drums on which are mounted the milling tools. Each pair of drums rotates about a common axis, the two axes of the mill motors being parallel and horizontal in use.
  • the milling drums are rotated from hydraulic motors.
  • the hydraulic motor is placed on the frame above the cutting head. It transmits power through a shaft of small diameter substantially vertical which passes through the thickness of the plate forming the bearing of the milling motor.
  • the vertical shaft attacks a pair of bevel gears that return motion in the horizontal axis.
  • An epicyclic reduction system reduces the rotation speed and multiplies the torque to effectively drive the mill drums.
  • the hydraulic motors are placed at the lower part of the frame of the machine above the cutting head and the power is transmitted to the milling drum by a transmission chain.
  • the first two types of excavating machine have the major disadvantage of having hydraulic motors above the cutting head and thus to present a more complex and more expensive assembly of these engines. In particular, it is impossible to make rapid exchanges of the cutting head.
  • the thickness of the cutting head is conditioned by the width of the trench to be produced which can vary from 500 to 1500 mm.
  • the present invention relates to an excavation machine of reduced width typically between 500 and 800 mm.
  • An object of the present invention is to provide a cutting head for a milling type excavating machine which offers better performance in terms of torque and / or speed than prior machines in an available volume determined by the diameter of the drums of the milling machine.
  • strawberry which is in general of the order of 1.4 m and the thickness of the cutting head preferably between 500 mm and 800 mm.
  • the position of the bearings minimizes the size of the mill motor in the direction of the hydraulic motor shaft.
  • the cutter motor further comprises two rims for mounting the cutter drums, each rim being kinematically connected to one end of said shaft and two bearing assemblies mounted respectively on the outer face of said mounting assembly and on the outer face. of the end portion of the mounting structure.
  • the mill motor further comprises a control system for varying the displacement of the hydraulic motor, driven by the fluid conveyed by one of said pipes and one of said pipes.
  • FIGs 1A and 1B there is shown in a simplified manner the entire milling type of excavation machine.
  • This machine is constituted by a frame 12 of relatively large length and of substantially rectangular horizontal section.
  • the upper end 12a of the chassis is equipped with pulleys 14 on which passes a muffle levitation of the mill 12.
  • On the lower end 12b of the frame 12 are attached two identical milling motors 16 and 18 forming the cutting head.
  • Each cutter motor 16 or 18 essentially consists of a fixing plate 20 on which are mounted two milling drums 22 and 24 symmetrical with respect to the median plane of the fixing plate 20.
  • the invention relates to the rotary drive of milling drums 22, 24 of the milling motors 16 and 18.
  • the suction nozzle 17 for the cut soil debris and the suction pump 19 thereof have also been included.
  • the mill motor 16 comprises a mounting structure 26 which is integral with the fixing plate 20 and engaged in a preferably circular orifice 28 of axis XX 'formed in this plate.
  • the mounting structure 26 includes an end portion 29 for receiving the hydraulic motor supply lines, as will be explained later, and a mounting assembly 30 for receiving the hydraulic motor 32.
  • the hydraulic motor 32 comprises a stator 32a and a rotor 32b.
  • the end portion 29 and the assembly assembly 30 are offset from the median plane along the axis XX 'of rotation of the drums of strawberry.
  • the mounting structure 26 is integral with the fixing plate 20 and engaged in the orifice, preferably circular 28 thereof.
  • the hydraulic motor 32 is entirely arranged on one and the same side of the median plane of the fixing plate 20. In other cases, the hydraulic motor 32 could be partly located in the other side of the median plane.
  • the assembly assembly 30 is constituted by a cylindrical shell 36, which extends on one side of the end portion 28 and which defines a cylindrical cavity 38 intended to receive the hydraulic motor 32, the latter being fixed by its stator 32a on the ferrule.
  • This cavity opens at one end of the cutter motor thus making the hydraulic motor 32 easily accessible.
  • the hydraulic motor 32 rotates a shaft 40 which extends in the direction XX 'over the entire width of the mill motor.
  • the milling drums are rotated by the shaft 40 by means of two rims 42 and 44 respectively integral ends 40a and 40b of the shaft 40 of the hydraulic motor.
  • the milling drums are mounted on the outer face of the rims 42 and 44.
  • the bearings 46 and 48 are interposed between the outer faces 29a and 36a of the end portion 29 and the shell 36, on the one hand, and the rims 42 and 44 on the other hand. These bearings 46 and 48 must, on the one hand, take up the radial forces resulting from the action of the milling cutters on the ground, and on the other hand take up the axial forces resulting from the feeding mode of the hydraulic motor 32, as will explain later. In addition, these bearings must be able to take axial forces due to axial thrust applied to the milling drum by possible inhomogeneities of the soil in which the drilling is performed.
  • the bearings 46 are mounted at least in part to the right of the hydraulic motor 32. Thus, it is possible to obtain a high compactness of the mill motor in the direction of its axis.
  • the stator of the hydraulic motor 32 is fixed directly on the assembly assembly 30, that is to say on the cylindrical shell 36.
  • the supply of the hydraulic motor 32 and its annexes is carried out firstly by pipes 50 formed in the thickness of the fixing plate 20, and secondly by pipes 52 arranged in the end portion 29 of the mounting structure 26, Figure 2 showing these pipes symbolically.
  • each pipe 50 is connected to a first end of a pipe 52, the second end of these pipes being connected to a distribution window 54 to ensure a sliding and rotating connection between these pipes and the rotor 32b of the motor hydraulic 32.
  • FIG. 3 shows in more detail an embodiment of the milling motor object of the invention.
  • FIG. 3 shows the pipes 50a, 50b, 50c, 50d and 50e which are formed in the thickness of the fixing plate 20, as well as the pipes 52a, 52b, 52c, 52d and 52e connected thereto. .
  • Line 50a corresponds to the high pressure supply of the hydraulic motor
  • line 50e corresponds to the low pressure oil outlet of the hydraulic motor
  • the lines 50b and 50c respectively correspond to the draining of the internal leaks of the hydraulic motor 32 and to the balancing of the internal pressure of the bur motor.
  • Sealing pressure balancing systems are well known per se. It is not necessary to describe them here. Their function is to prevent the penetration of drilling mud into the mill motor itself.
  • the pipes 50a to 50e formed in the thickness of the fixing plate 20 are lined internally with a liner 56 having properties adapted to the liquids circulating in these pipes and at their pressure.
  • This lining where it exists, also aims to improve the seal.
  • the fixing plate 20 can have a reduced thickness, typically of the order of 50 to 60 mm.
  • the fixing plate comprises a circular orifice 28 in which the mounting structure 26 is mounted. Indeed, in the thickness of the fixing plate 20, only the straight lines 50 which comprise preferably a liner 56. The bent portions are in fact part of the pipes 52 formed in the end portion 29 of the mounting structure. In the end portion 29, there is ample room to spare the pipes 52 and the supply windows of the hydraulic motor.
  • the fact of being able to minimize the thickness of the fixing plate meets another objective. Indeed, the strawberries can not act in the corresponding zone except to make expensive special arrangements.
  • the milling motor is equipped with a control for varying the displacement of the hydraulic motor, this system not being shown in the figures.
  • These displacement control systems are well known in themselves.
  • Line 50d and line 52d serve to convey the control liquid of the displacement change system.
  • the hydraulic motor 32 has two possible cylinders.
  • This arrangement makes it possible to adapt the torque delivered by the hydraulic motor 32 and transmitted to the milling drums to the characteristics of the soil in which the excavating machine is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Earth Drilling (AREA)
EP07112941.5A 2006-07-28 2007-07-23 Fräskopf für ein Erdaushubgerät Active EP1882782B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0653171A FR2904339B1 (fr) 2006-07-28 2006-07-28 Tete de coupe pour une machine d'excavation

Publications (2)

Publication Number Publication Date
EP1882782A1 true EP1882782A1 (de) 2008-01-30
EP1882782B1 EP1882782B1 (de) 2018-03-21

Family

ID=37733701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07112941.5A Active EP1882782B1 (de) 2006-07-28 2007-07-23 Fräskopf für ein Erdaushubgerät

Country Status (6)

Country Link
US (1) US7591514B2 (de)
EP (1) EP1882782B1 (de)
JP (1) JP5204434B2 (de)
KR (1) KR101502537B1 (de)
CA (1) CA2594051C (de)
FR (1) FR2904339B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20070241A1 (it) * 2007-04-05 2008-10-06 Soilmec Spa Pompa per idrofresa.
EP3556942B1 (de) * 2018-04-18 2020-04-29 BAUER Maschinen GmbH Schlitzwandfräse und verfahren zum erstellen eines frässchlitzes im boden
DE202019102477U1 (de) 2019-02-27 2020-06-03 Liebherr-Components Biberach Gmbh Antriebseinrichtung für eine Schlitzwandfräse
CN112195997A (zh) * 2020-09-28 2021-01-08 广州市鼎隆机电安装有限公司 一种埋地式机电设备安装装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2211280B1 (de) * 1972-03-09 1973-04-05 Salzgitter Maschinen AG, 3327 Salz gitter Bad Schraemwerkzeug fuer einne bergmaennische vortriebs- oder gewinnungsmaschine
EP0262050A1 (de) * 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Fräsvorrichtung für Erdbewegungsmaschine zum Ausheben von Gräben im Boden
US4844549A (en) * 1987-07-16 1989-07-04 Soletanche Milling machine for digging trenches in the earth
DE19539249A1 (de) * 1994-10-21 1996-04-25 Casagrande Spa Fräse mit Abstützbuchse
FR2726018A1 (fr) * 1994-10-21 1996-04-26 Casagrande Spa Fraise avec palier a roulement, adaptee pour l'execution d'excavations
WO2000036230A1 (en) * 1998-12-11 2000-06-22 Rn Cribb Pty Limited Rotary drum cutting head
US20040256908A1 (en) * 2001-10-16 2004-12-23 Mirco Risi Hydraulic milling machine for excavators

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290096A (en) * 1963-12-20 1966-12-06 Westinghouse Air Brake Co Motorized multiple drums for mining machine
US3868980A (en) * 1972-03-21 1975-03-04 Hans Und Heinrich Blum Ohg Method and apparatus for comminuting tree stumps
DE3612020A1 (de) * 1986-04-10 1987-10-15 Hochtief Ag Hoch Tiefbauten Vorrichtung zum einbringen eines im wesentlichen vertikalen bodenschlitzes
US5158126A (en) * 1991-11-25 1992-10-27 Lang William J Improvements in tree stump grinders and methods of grinding tree stumps
FR2819834B1 (fr) * 2001-01-23 2003-04-04 Cie Du Sol Outil de fraisage pour la coupe de terrains durs et de terrains collants
FR2862336B1 (fr) * 2003-11-18 2006-03-17 Cie Du Sol Machine de forage a outils rotatifs
JP4477453B2 (ja) * 2004-08-27 2010-06-09 株式会社東亜利根ボーリング 水平多軸掘削機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2211280B1 (de) * 1972-03-09 1973-04-05 Salzgitter Maschinen AG, 3327 Salz gitter Bad Schraemwerkzeug fuer einne bergmaennische vortriebs- oder gewinnungsmaschine
EP0262050A1 (de) * 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Fräsvorrichtung für Erdbewegungsmaschine zum Ausheben von Gräben im Boden
US4844549A (en) * 1987-07-16 1989-07-04 Soletanche Milling machine for digging trenches in the earth
DE19539249A1 (de) * 1994-10-21 1996-04-25 Casagrande Spa Fräse mit Abstützbuchse
FR2726018A1 (fr) * 1994-10-21 1996-04-26 Casagrande Spa Fraise avec palier a roulement, adaptee pour l'execution d'excavations
WO2000036230A1 (en) * 1998-12-11 2000-06-22 Rn Cribb Pty Limited Rotary drum cutting head
US20040256908A1 (en) * 2001-10-16 2004-12-23 Mirco Risi Hydraulic milling machine for excavators

Also Published As

Publication number Publication date
FR2904339A1 (fr) 2008-02-01
FR2904339B1 (fr) 2011-03-04
US7591514B2 (en) 2009-09-22
CA2594051A1 (en) 2008-01-28
JP5204434B2 (ja) 2013-06-05
JP2008031837A (ja) 2008-02-14
KR20080011127A (ko) 2008-01-31
KR101502537B1 (ko) 2015-03-13
EP1882782B1 (de) 2018-03-21
CA2594051C (en) 2014-12-09
US20080024001A1 (en) 2008-01-31

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