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WO2003033826A1 - Hydraulic milling machine for excavators - Google Patents

Hydraulic milling machine for excavators Download PDF

Info

Publication number
WO2003033826A1
WO2003033826A1 PCT/IB2002/004171 IB0204171W WO03033826A1 WO 2003033826 A1 WO2003033826 A1 WO 2003033826A1 IB 0204171 W IB0204171 W IB 0204171W WO 03033826 A1 WO03033826 A1 WO 03033826A1
Authority
WO
WIPO (PCT)
Prior art keywords
milling
drums
excavators
milling machine
hydraulic
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.)
Ceased
Application number
PCT/IB2002/004171
Other languages
French (fr)
Inventor
Mirco Risi
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.)
Simex Engineering SRL
Original Assignee
Simex Engineering 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 Simex Engineering SRL filed Critical Simex Engineering SRL
Priority to EP02775064A priority Critical patent/EP1440210B1/en
Priority to DE60237027T priority patent/DE60237027D1/en
Priority to US10/493,012 priority patent/US20040256908A1/en
Publication of WO2003033826A1 publication Critical patent/WO2003033826A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

Definitions

  • the invention concerns the technology of the mechanisms for the motion transmission from an hydraulic motor to milling rotating tools, included in the international classification E01 c.
  • Figure 1 is a view of the extractable transmission shaft that transmits the torque from a central hydraulic motor with two milling side drums.
  • Figure 2 is a view of an extractable transmission shaft that transmits the torque from a central hydraulic motor to a single side milling drum.
  • Figures 1 and 2 highlight the simplicity of execution of the transmission shaft that is inserted and extracted with surprising simplicity just because its only function is to transmit the torque of the hydraulic central motor without bearing any other stress that milling drums are likely to encounter during heavy excavation operations.
  • Figure3 is a schematic section of the rotor of an hydraulic motor that can be applied to a frame structure of an operator machine. It can be noticed a central groove 2 where the grooved shaft, that transmits the torque of the hydraulic motor without suffering any milling related stress, is inserted and extracted.
  • Figure 4 is an axis section of a support for a milling drum. It can be noticed the central grooves of the drum in which can be inserted and extracted the grooved shaft that transmits to the milling drum only the torque of the hydraulic motor but it does not suffer the other stresses caused by the heavy milling conditions.
  • Figure 5 is an axis section of the side supports applied to the frame structure through the connecting bolts.
  • Figure 5 presents a case where in the axial grooves of the side drums and of the hydraulic central motor can be inserted and then extracted the grooved shaft that transmits the torque to the milling drums held by the supports bolted to the frame structure. It can be noticed that the grooved shaft it is not yet assembled or it has already been extracted.
  • Figure 6 presents a grooved shaft already inserted in the groove of the side drums and in the main groove of the hydraulic motor.
  • Figure 7 represents a version of the invention with a single side drum. It can be noticed that the grooved shaft it has not been inserted yet or it has been already extracted from the central groove.
  • Figure 8 represents the same version of figure 7 with the grooved shaft already inserted in the relative grooves.
  • Figure 9 schematizes an external view of the application of two side drums.
  • Figure 10 schematizes an external view of the application of a single drum.
  • Figure 11 is a three-dimensional representation of the application of two side drums.
  • Figure 12 schematizes a side view of the application of the milling machine at the edge of an operator arm of a machine.
  • FIG. 13 schematizes in perspective a milling head with two side drums. In the figures each single detail is marked as follows:
  • 1 is a grooved shaft that can be inserted and extracted in the groove rotor of an hydraulic motor.
  • 3 is the inner groove of the hub of a milling drum.
  • 5 is a support that is bolted to a frame central structure.
  • 11 is a partially grooved shaft for the version with a single side drum.
  • the extraordinary resistance of the device object of the present invention is of course obtained by the characteristic separation of two kinds of stresses. Only the torsion stresses for the transmission of the motor torque of the hydraulic motor are absorbed by the grooved shaft inserted in the central rotor while the other stresses are absorbed by the frame structure through the bolted side supports.
  • the invention of course allows for several variations of practical realization as far as the dimensioning and the structural proportioning are concerned and for the technological choices of the material for the realization of the details. All the milling machines having a central transmission shaft, grooved and extractable, with the characteristics as fundamentally illustrated, described and hereinafter claimed, will be held as being part of protection sphere of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Shovels (AREA)

Abstract

An hydraulic milling machine for excavators characterized by the fact that the driving shaft (1) for the transmission of the torque, from th grooved rotor (2) of the central hydraulic motor to the milled tool holding drums (4), it is subject only to the torsion stress since all the other dynamic stresses on the drums are dumped on the supports (5) fixed on the structure.

Description

HYDRAULIC MILLING MACHINE FOR EXCAVATORS
FIELD OF THE ART
The invention concerns the technology of the mechanisms for the motion transmission from an hydraulic motor to milling rotating tools, included in the international classification E01 c.
STATE OF THE ART
It is known the employment of hydraulic motor to activate rotating operating tools and in particular milling machines that operate on stony compact materials. The known equipment, besides transmitting the necessary torque to operate the heavy milling operations, must also bear the bending stress and the shocks caused by the rapid impact of the tools against the rocky walls. The bending stress is increased by the fact that the milling drums are assembled overhanging on the motor shaft in order to perform penetrations in the rocky walls.
Such operational needs have demonstrated that motor shaft it is often not able to bear for long the combined effect of the heavy stresses during the milling operations. The problem to be solved is to increase the overall resistance and the life of the transmission organs. The present invention suggests an optimal solution for the problems that still affect this field of technology. The finding object of the present invention is also characterized by limited dimensions, economic realization and convenience during maintenance operations.
DESCRIPTION
The invention is now disclosed with reference to the figures of the attached drawings as a not limiting example.
Figure 1 is a view of the extractable transmission shaft that transmits the torque from a central hydraulic motor with two milling side drums.
Figure 2 is a view of an extractable transmission shaft that transmits the torque from a central hydraulic motor to a single side milling drum. Figures 1 and 2 highlight the simplicity of execution of the transmission shaft that is inserted and extracted with surprising simplicity just because its only function is to transmit the torque of the hydraulic central motor without bearing any other stress that milling drums are likely to encounter during heavy excavation operations.
Figure3 is a schematic section of the rotor of an hydraulic motor that can be applied to a frame structure of an operator machine. It can be noticed a central groove 2 where the grooved shaft, that transmits the torque of the hydraulic motor without suffering any milling related stress, is inserted and extracted. Figure 4 is an axis section of a support for a milling drum. It can be noticed the central grooves of the drum in which can be inserted and extracted the grooved shaft that transmits to the milling drum only the torque of the hydraulic motor but it does not suffer the other stresses caused by the heavy milling conditions. Figure 5 is an axis section of the side supports applied to the frame structure through the connecting bolts. It can be noticed that inside said supports are inserted taper roller bearings upon which are assembled the hubs of the side milling drums. Figure 5 presents a case where in the axial grooves of the side drums and of the hydraulic central motor can be inserted and then extracted the grooved shaft that transmits the torque to the milling drums held by the supports bolted to the frame structure. It can be noticed that the grooved shaft it is not yet assembled or it has already been extracted.
Figure 6 presents a grooved shaft already inserted in the groove of the side drums and in the main groove of the hydraulic motor.
Figure 7 represents a version of the invention with a single side drum. It can be noticed that the grooved shaft it has not been inserted yet or it has been already extracted from the central groove.
Figure 8 represents the same version of figure 7 with the grooved shaft already inserted in the relative grooves.
Figure 9 schematizes an external view of the application of two side drums. Figure 10 schematizes an external view of the application of a single drum. Figure 11 is a three-dimensional representation of the application of two side drums.
Figure 12 schematizes a side view of the application of the milling machine at the edge of an operator arm of a machine.
Figure 13 schematizes in perspective a milling head with two side drums. In the figures each single detail is marked as follows:
1 is a grooved shaft that can be inserted and extracted in the groove rotor of an hydraulic motor.
2 is the grooved rotor of a central hydraulic motor.
3 is the inner groove of the hub of a milling drum.
4 is a milling drum.
5 is a support that is bolted to a frame central structure.
6 is a hydraulic stator bolted to the frame central structure.
7 is the frame central structure.
8 is closing cover of the version with a single side drum.
9 are bolts for the application to the central structure.
10 are the bearings for the support of the drums applied to support 5 bolted to the structure frame.
11 is a partially grooved shaft for the version with a single side drum.
12 indicates the distributor of the hydraulic motor.
13 are elastic retaining rings of the extractable grooved shafts.
14 are milling tools applied to the drum of a milling machine
The evidence of the figures highlights the simplicity of realization and convenience of the maintenance operations for the replacement of the grooved shaft.
The extraordinary resistance of the device object of the present invention is of course obtained by the characteristic separation of two kinds of stresses. Only the torsion stresses for the transmission of the motor torque of the hydraulic motor are absorbed by the grooved shaft inserted in the central rotor while the other stresses are absorbed by the frame structure through the bolted side supports. The invention of course allows for several variations of practical realization as far as the dimensioning and the structural proportioning are concerned and for the technological choices of the material for the realization of the details. All the milling machines having a central transmission shaft, grooved and extractable, with the characteristics as fundamentally illustrated, described and hereinafter claimed, will be held as being part of protection sphere of the present invention.

Claims

1) Hydraulic milling machine for excavators CHARACTERIZED BY THE FACT THAT the motor shaft (1) for the transmission of the torque from the grooved rotor (2) of the central hydraulic motor to the tool holding milling drums (4) is subjected only to the torsion stress since all the other dynamic stresses on the drums are dumped on the supports (5) fixed onto the frame structure.
2) Hydraulic milling machine for excavators, as in claim 1, CHARACTERIZED BY THE FACT THAT the shaft 1 can be inserted and extracted from the grooved rotor (2) of the central hydraulic motor.
PCT/IB2002/004171 2001-10-16 2002-10-11 Hydraulic milling machine for excavators Ceased WO2003033826A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02775064A EP1440210B1 (en) 2001-10-16 2002-10-11 Hydraulic milling machine for excavators
DE60237027T DE60237027D1 (en) 2001-10-16 2002-10-11 HYDRAULIC MILLING MACHINE FOR EXCAVATORS
US10/493,012 US20040256908A1 (en) 2001-10-16 2002-10-11 Hydraulic milling machine for excavators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001BO000632A ITBO20010632A1 (en) 2001-10-16 2001-10-16 HYDRAULIC MILLING MACHINE FOR EXCAVATOR MACHINES
ITBO2001A000632 2001-10-16

Publications (1)

Publication Number Publication Date
WO2003033826A1 true WO2003033826A1 (en) 2003-04-24

Family

ID=11439657

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/004171 Ceased WO2003033826A1 (en) 2001-10-16 2002-10-11 Hydraulic milling machine for excavators

Country Status (6)

Country Link
US (1) US20040256908A1 (en)
EP (1) EP1440210B1 (en)
DE (1) DE60237027D1 (en)
ES (1) ES2349193T3 (en)
IT (1) ITBO20010632A1 (en)
WO (1) WO2003033826A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975323A1 (en) * 2007-03-28 2008-10-01 Compagnie du Sol Cutting head for a soil-cutting machine with rotary cutters
WO2009118386A1 (en) * 2008-03-26 2009-10-01 Allu Deutschland Gmbh Device for the cutting and mixing of soils
US20110241408A1 (en) * 2010-04-06 2011-10-06 Bomag Gmbh Milling Drum For A Ground Milling Machine And A Ground Milling Machine
DE102010024428A1 (en) 2010-06-21 2011-12-22 Ulrich Bechem Cultivation milling cutter for use as transverse cutting milling cutter, has drum including middle axes that are evenly or unevenly pivotably arranged in same direction in angles larger than specific degree to middle line of base carrier
EP2647769A1 (en) 2012-04-05 2013-10-09 Witeck Milling head for use on a work machine
EP2324158B2 (en) † 2008-09-11 2020-11-25 Klaus Ertmer Cutter to be mounted on an excavator, having cutting heads and a cutter chain.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2899608B1 (en) * 2006-04-06 2010-04-16 Cie Du Sol DRILLING TOOLS
FR2904339B1 (en) * 2006-07-28 2011-03-04 Cie Du Sol CUTTING HEAD FOR AN EXCAVATION MACHINE
FR2904338B1 (en) * 2006-07-28 2011-03-04 Cie Du Sol CUTTING HEAD FOR EXCAVATION MACHINE
IT1400429B1 (en) * 2009-12-15 2013-05-31 Soilmec Spa TOOL FOR THIN DIAPHRAGMENTS.
DE202010010857U1 (en) 2010-07-30 2010-10-21 MTS Gesellschaft für Maschinentechnik und Sonderbauten mbH milling device
WO2012045327A1 (en) * 2010-10-08 2012-04-12 Simex Engineering S.R.L. Cutter heads for ground or walls cutter machines and cutter machines provided with such cutter heads
US9200423B2 (en) 2011-06-06 2015-12-01 Gms Mine Repair And Maintenance, Inc. Cleaning vehicle, vehicle system and method
IT202100031592A1 (en) * 2021-12-16 2023-06-16 Mecc Breganzese S P A In Breve Mb S P A ROTARY DISGREGERATOR FOR EXCAVATORS AND OPERATING MACHINES IN GENERAL

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098539A (en) * 1975-09-02 1978-07-04 Vereinigte Osterreichische Eisen- Und Stahlwerke - Alpine Montan Aktiengesellschaft Cutting machine
DE3712483A1 (en) * 1986-04-16 1987-10-22 Voest Alpine Ag DRIVE ARRANGEMENT FOR THE SCRAPER HEADS OF A SCRAPER
US4785559A (en) * 1986-04-10 1988-11-22 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Excavator for making a substantially vertical slot in the ground
US4883134A (en) * 1986-09-26 1989-11-28 Soletanche Milling machine for cutting trenches
US5478139A (en) * 1993-05-25 1995-12-26 Rockmaster Equipment Manufacturing, Inc. Mobile digging/cutting system
DE19539249A1 (en) * 1994-10-21 1996-04-25 Casagrande Spa Rotary tool for digging trenches
WO2000036230A1 (en) * 1998-12-11 2000-06-22 Rn Cribb Pty Limited Rotary drum cutting head
US6158818A (en) * 1996-11-06 2000-12-12 Webster Schaeff & Co. Rock cutting head
WO2000075488A1 (en) * 1999-06-08 2000-12-14 Voest-Alpine Bergtechnik Gesellschaft M.B.H. Stone head to be mounted on excavator arms

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES420924A1 (en) * 1972-12-14 1976-04-01 Hydrosol Device for drilling in hard rock formation
US5975644A (en) * 1997-07-28 1999-11-02 Lang; William J. Grinder mixer assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098539A (en) * 1975-09-02 1978-07-04 Vereinigte Osterreichische Eisen- Und Stahlwerke - Alpine Montan Aktiengesellschaft Cutting machine
US4785559A (en) * 1986-04-10 1988-11-22 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Excavator for making a substantially vertical slot in the ground
DE3712483A1 (en) * 1986-04-16 1987-10-22 Voest Alpine Ag DRIVE ARRANGEMENT FOR THE SCRAPER HEADS OF A SCRAPER
US4883134A (en) * 1986-09-26 1989-11-28 Soletanche Milling machine for cutting trenches
US5478139A (en) * 1993-05-25 1995-12-26 Rockmaster Equipment Manufacturing, Inc. Mobile digging/cutting system
DE19539249A1 (en) * 1994-10-21 1996-04-25 Casagrande Spa Rotary tool for digging trenches
US6158818A (en) * 1996-11-06 2000-12-12 Webster Schaeff & Co. Rock cutting head
WO2000036230A1 (en) * 1998-12-11 2000-06-22 Rn Cribb Pty Limited Rotary drum cutting head
WO2000075488A1 (en) * 1999-06-08 2000-12-14 Voest-Alpine Bergtechnik Gesellschaft M.B.H. Stone head to be mounted on excavator arms

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975323A1 (en) * 2007-03-28 2008-10-01 Compagnie du Sol Cutting head for a soil-cutting machine with rotary cutters
FR2914331A1 (en) * 2007-03-28 2008-10-03 Cie Du Sol Soc Civ Ile CUTTING HEAD FOR ROTATING STRAW GROUT CUTTING MACHINE
US8128178B2 (en) 2007-03-28 2012-03-06 Compagnie Du Sol Cutter head for a ground cutter machine having rotary cutters
WO2009118386A1 (en) * 2008-03-26 2009-10-01 Allu Deutschland Gmbh Device for the cutting and mixing of soils
US8789893B2 (en) 2008-03-26 2014-07-29 Allu Deutschland Gmbh Device for the cutting and mixing of soils
EP2324158B2 (en) † 2008-09-11 2020-11-25 Klaus Ertmer Cutter to be mounted on an excavator, having cutting heads and a cutter chain.
US20110241408A1 (en) * 2010-04-06 2011-10-06 Bomag Gmbh Milling Drum For A Ground Milling Machine And A Ground Milling Machine
US8672416B2 (en) * 2010-04-06 2014-03-18 Bomag Gmbh Milling drum for a ground milling machine and a ground milling machine
DE102010024428A1 (en) 2010-06-21 2011-12-22 Ulrich Bechem Cultivation milling cutter for use as transverse cutting milling cutter, has drum including middle axes that are evenly or unevenly pivotably arranged in same direction in angles larger than specific degree to middle line of base carrier
EP2647769A1 (en) 2012-04-05 2013-10-09 Witeck Milling head for use on a work machine
FR2989098A1 (en) * 2012-04-05 2013-10-11 Witeck MILLING DEVICE ADAPTABLE ON A PUBLIC WORKS MACHINE

Also Published As

Publication number Publication date
US20040256908A1 (en) 2004-12-23
EP1440210B1 (en) 2010-07-14
EP1440210A1 (en) 2004-07-28
DE60237027D1 (en) 2010-08-26
ITBO20010632A1 (en) 2003-04-16
ES2349193T3 (en) 2010-12-28

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