EP0143003A2 - Machine de fraisage ou de coupe - Google Patents

Machine de fraisage ou de coupe Download PDF

Info

Publication number
EP0143003A2
EP0143003A2 EP84308130A EP84308130A EP0143003A2 EP 0143003 A2 EP0143003 A2 EP 0143003A2 EP 84308130 A EP84308130 A EP 84308130A EP 84308130 A EP84308130 A EP 84308130A EP 0143003 A2 EP0143003 A2 EP 0143003A2
Authority
EP
European Patent Office
Prior art keywords
frame
attachment
cutting
cutting member
shaft
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Withdrawn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
EP84308130A
Other languages
German (de)
English (en)
Other versions
EP0143003A3 (fr
Inventor
Alan Richard c/o Bowmer & Kirkland Morris
Ronald Peter c/o Bowmer & Kirkland Parker
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.)
BOWMER AND KIRKLAND PRODUCT SALES Ltd
Original Assignee
BOWMER AND KIRKLAND PRODUCT SALES Ltd
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 BOWMER AND KIRKLAND PRODUCT SALES Ltd filed Critical BOWMER AND KIRKLAND PRODUCT SALES Ltd
Publication of EP0143003A2 publication Critical patent/EP0143003A2/fr
Publication of EP0143003A3 publication Critical patent/EP0143003A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • E01C23/08—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 roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—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 roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools

Definitions

  • a road milling or cutting attachment adapted to be mounted on the boom of a hydraulic machine, the attachment comprising a frame, a road surface cutting member rotatably mounted in the frame and a low speed, high torque hydraulic motor directly coupled to the cutting member.
  • the hydraulic motor is preferably designed to operate at a-speed of 75 to 200 r.p.m.
  • the cutting member may comprise a cylindrical drum the periphery of which is fitted with cutting picks whereby to remove a strip of the road surface approximately equal in width to the width of the drum.
  • the cutting member may comprise one or more discs having picks mounted on their peripheries whereby to produce one or more elongated cuts or slits in the road surface.
  • the cutting members are formed of at least two arcuate parts detachably secured to mounting flanges on a drive shaft by detachable securing members, said frame having openings therein permitting access to said securing members through the frame to enable the cutting members to be readily mounted on and detached from the shaft.
  • said frame incorporates a yoke portion the arms of which support bearings in which said drive shaft is rotatably mounted, one arm of said yoke being detachable to enable axial removal of the shaft and permit access to the shaft bearings.
  • the machine comprises an attachment adapted to be carried on the boom of a hydraulic machine such as an excavator or a tractor fitted with a back-hoe.
  • a hydraulic machine such as an excavator or a tractor fitted with a back-hoe.
  • the machine incorporates a mounting member 5 provided with upstanding brackets 6 by means of which the mounting member is connected to the excavator boom.
  • the frame of the machine incorporates a yoke member having a cross piece 7 and a pair of depending arms 8A and 8B.
  • a main drive shaft 9 has its ends journalled in bearings 10 carried by the free ends of the arms 8A and 8B and is provided with a pair of axially spaced flanges 11 towards its opposite ends incorporating through holes 12 by means of which cutting devices may be bolted to the drive shaft as will be described hereafter.
  • a leading axle carrier 15 and a trailing axle carrier 16 are pivotally mounted on each end of the main drive shaft and are provided with respective pairs of ground engaging wheels 17 and 18, the free ends of the trailing axle carriers being connected by a cross piece 19 and the free ends of the leading axle carriers being interconnected by an axle 20 on which the wheels 17 are mounted.
  • the leading axle carriers 15 incorporate upwardly and rearwardly directed extensions 21 the arms of which at opposite sides of the machine are connected by a cross-piece 22.
  • a threaded adjuster 23 is engaged with complementary threaded nuts 19A, 22A on the cross-pieces 19and 22 such that rotation of the adjuster 23 moves the two cross-pieces towards or away from one another and thus changes the angle of inclination between the leading and trailing axle carriers 15 and 16. As the angle between the carriers increases the cutting unit mounted on the main drive shaft 9 moves downwardly, thereby altering the depth to which it will remove the road surface.
  • a two part arcuate guard having a forward portion 27A and a rearward portion 27B respectively mounted on the leading and trailing axle carriers 15. and 16 and slidably engaged with one another, is mounted on the machine to enclose the rotating cutter unit.
  • the sliding connection between the two parts of the guard enables them to move relative to one another when the cutting height of the attachment is altered.
  • the overlapping portions of the guard are designed to have minimum internal projections which might interfere with passage of material carried round by the drum during the cutting operation.
  • the main drive shaft 9 may be fitted either with a cutter unit in the form of a cutter drum as shown at 30 or one or more cutter discs (not shown). These cutter units may be presented to the drive shaft in a radial direction for which purpose they are formed of two semi-circular or semi-cylindrical portions 30A, 30B having end flanges 31 provided with bolt holes 32 complementary to the holes 12 on the fixed flanges 11 carried by the shaft 9.
  • the cutter drum and cutter discs may thus be mounted on and detached from the shaft without requiring the frame to be dismantled or the shaft bearings removed to permit axial withdrawal.
  • a plurality nf cutting picks 33 are mounted on the cutter drum 30 (and on the alternatively usable disc or discs which are not shown) and serve during rotation to dig into the road surface and remove it to a depth determined by the height adjustment of the unit.
  • the main drive shaft 9 is directly coupled to a hydraulic motor 35.
  • the motor is a low speed, high torque motor having an operating speed in the region and a torque rating of 800-2150 lb.ft. of 75 to 200 r.p.m./and is supplied with hydraulic fluid from the excavator through pipelines travelling along the excavator boom.
  • the mounting member 5 is provided with apertures 36 through which the pipes 37 pass in their passage between the boom and the motor 35 whereby to prevent the pipes from flexing and becoming trapped or interfering with operation of the boom or the attachment.
  • the motor 35 operates at around 140 rpm producing a torque rating of approximately 1500 1b.ft.
  • a pair of sideguards 40 are pivotally mounted on the trailing axle carrier 16.
  • Each guard 40 is provided with an outwardly directed foot or skid portion 41 at its lower edge which slides over the grcund during use.
  • the upper leading portion 40A of the guard projects between the yoke arm 8A or 8B and the associated axle carrier which restrains the guard against outward bending movement in the event it is subjected to side loads.
  • a deflector 42 is carried by each of the guards 40.
  • the deflector extends across the associated trailing wheel 18 and is rearwardly inclined whereby to carry loose material clear of the path of travel of the wheels, thereby avoiding interference with the depth of cutting due to accumulation of loose material.
  • the rolling surfaces of the wheels are coated with polyurethane or other suitable plastics material.
  • each guard 40 is cut away at 40B in the region beneath the associated arm 8A or 8B of the yoke 7 to leave an opening 45 through which access can be gained to the studs 13 securing the cutter drum 30 or disc in position on the main drive shaft 9.
  • These studs may therefore be removed or replaced in turn by rotating the drive shaft to bring the next stud 13 opposite the opening 45 and by sequentially detaching the studs at each side of the drum, each half 30A, 30B of the drum or blade may be detached from the main drive shaft 9 and removed radially clear of the attachment.
  • drums of different cutting width can be fitted to the attachment or the drums replaced by a pair of cutter discs secured one to each of the flanges 11 on the main drive shaft, these operations being effected without requiring the frame 7, 8A,8B to be dismantled or the drive shaft 9 removed.
  • the arm 8A of the yoke which is disposed at the opposite side of the attachment to the drive motor 35 is detachably connected to the cross-piece 7 by bolts 8C and may be unbolted and detached.
  • the bearing 10 in which the associated end of the drive shaft 9 runs comes away with the arm 8A and following detachment of the cutter drum 30 or disc the drive shaft 9 may be withdrawn axially from its bearings 10 in the yoke 8B at the opposite side of the machine. In this way access to both bearings can be easily gained for purposes of maintainance or repair.
  • the motor 35 is also detachably bolted to the associated arm 8B of the yoke by bolts 35A to enable ready removal for repair or maintainance.
  • brackets 5 In order to enable the attachment to be connected to the booms of different types of excavator, alternative mounting brackets 5 require to be provided.
  • the bracket 5 is detachably bolted to the cross-piece 7 of the main frame by bolts 5A, whereby mounting brackets may be readily interchanged to suit different types of excavator to which the attachment may require to be fitted.
  • the machine In use of the machine it is attached to the boom of an excavator or the like and a cutter drum or cutter discs suited to the job in hand are fitted to the main drive shaft 9.
  • the excavator boom is then extended to place the attachment at some distance from the machine and the adjuster 23 is rotated to adjust the attachment to the desired cutting depth.
  • the hydraulic motor 35 is then energised and the boom drawn towards the excavating machine. This causes the attachment to be drawn over the road surface running on its wheels 17 and 18 while the cutter drum 30 or disc digs into the surface and removes material by a milling or cutting action. Once the boom has been drawn towards the machine as far as possible the operation is repeated.
  • the boom is traversed across the excavator and extended to act on a further strip of road surface adjacent to the strip previously milled. This procedure can be repeated as often as is required to remove a rectangular or other shaped patch of road surface.
  • the excavator is driven in the direction of the line of the trench, the boom extended to the end of the previously removed section and then drawn towards the excavator to remove a further section along the line of the trench.
  • the cutter drum When used for milling or planing the surface of a road the cutter drum is normally employed and cutting depths of the order of 2-to 4 inches may be attained. Where one or more cutter discs are employed these will generally cut to a greater depth of around 6 inches to enable the surface to be pulled away subsequently by an excavator bucket.
  • the speed of operation and the nature of the cutting unit employed will depend on the hydraulic supply of the machine to which the attachment is fitted and on the nature of the operation to be carried out on the road surface.
  • areas of road surface may be removed for repair or trenching purposes by means of an attachment fitted to the boom of a conventional excavator rather than requiring the employment of a separate road planing or cutting machine.
  • the construction of the attachment is such that it may be readily adapted to fit excavator booms of various different types and may be quickly and easily modified by fitting of different cutting units.
  • the cutting units and the shaft on which they are mounted are readily accessible for repair or maintainance purposes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Repair (AREA)
EP84308130A 1983-11-23 1984-11-23 Machine de fraisage ou de coupe Withdrawn EP0143003A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8331266 1983-11-23
GB838331266A GB8331266D0 (en) 1983-11-23 1983-11-23 Road milling/cutting machine

Publications (2)

Publication Number Publication Date
EP0143003A2 true EP0143003A2 (fr) 1985-05-29
EP0143003A3 EP0143003A3 (fr) 1986-07-23

Family

ID=10552230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84308130A Withdrawn EP0143003A3 (fr) 1983-11-23 1984-11-23 Machine de fraisage ou de coupe

Country Status (2)

Country Link
EP (1) EP0143003A3 (fr)
GB (2) GB8331266D0 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252419A2 (fr) * 1986-07-11 1988-01-13 Elda Barbieri Appareil de concassage mobile autopropulsé
WO1990005214A1 (fr) * 1988-11-11 1990-05-17 Rapitex Systems Limited Ameliorations apportees a des machines d'epandage de revetement
WO1994006965A1 (fr) * 1992-09-15 1994-03-31 Rota-Pic Limited Ameliorations apportees a un appareil de travaux publics
EP0625937A1 (fr) * 1992-02-14 1994-11-30 CHIUMINATTA, Edward Procede et appareil pour decouper du beton humide
WO1995018707A1 (fr) * 1994-01-03 1995-07-13 Norton Company Scie a decouper un revetement de sol
US5579754A (en) * 1990-04-27 1996-12-03 Chiuminatta; Edward Apparatus and method for cutting unhardened concrete
WO2000037887A2 (fr) * 1998-12-04 2000-06-29 Gary Cochran Appareil de controle de la profondeur d'un outil rotatif
DE102009060481A1 (de) * 2009-12-18 2011-06-22 Kässbohrer Geländefahrzeug AG, 88471 Bodenbearbeitungsgerät mit einer angetriebenen Arbeitswellenanordnung
CN102529581A (zh) * 2011-12-30 2012-07-04 安徽三井工程机械有限公司 切缝机行走轮
US20220290384A1 (en) * 2021-03-15 2022-09-15 Wirtgen Gmbh Self-propelled construction machine or mining machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4878713A (en) * 1988-12-09 1989-11-07 Alitec Corporation Pavement planing machine
US4938537A (en) * 1989-10-23 1990-07-03 Caterpillar Paving Products Inc. End closure for a rotary cutter housing
GB9017318D0 (en) * 1990-08-07 1990-09-19 Econ Group Ltd Improvements relating to road working apparatus
CN103526679B (zh) * 2013-11-05 2015-09-30 无锡锡通工程机械有限公司 连接轴保护装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2160403A1 (de) * 1971-12-06 1973-07-12 Reinhard Wirtgen Maschine zum abfraesen von strassendecken
DE2442348A1 (de) * 1974-09-04 1976-03-18 Marks & Co Fraeswalze fuer strassenfraesmaschinen mit auswechselbar eingesetzten fraeszaehnen
DE3145713A1 (de) * 1981-11-19 1983-05-26 Marks GmbH, 4353 Oer-Erkenschwick Fraeswalze
EP0092128A1 (fr) * 1982-04-15 1983-10-26 Alfred Dr. Hackmack Equipement interchangeable combiné de fraisage et de coupe joint pour excavateur hydraulique, pelle chargeuse et chargeur frontal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1255643A (en) * 1968-03-20 1971-12-01 Greenside Machine Co Ltd Improvements in or relating to apparatus for removing worn road surfaces
GB1316260A (en) * 1969-08-05 1973-05-09 Greenside Machine Co Ltd Rotary drum type cutting head for machines for mining tunnelling and like operations
GB1459183A (en) * 1972-12-22 1976-12-22 Non Impact Surfaces Ltd Road planing machines
US4006936A (en) * 1975-11-06 1977-02-08 Dresser Industries, Inc. Rotary cutter for a road planer
GB2012339A (en) * 1977-09-21 1979-07-25 Andrews R D R Road Plane
GB2031487B (en) * 1978-08-25 1982-09-15 Errut Prod Ltd Road planing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2160403A1 (de) * 1971-12-06 1973-07-12 Reinhard Wirtgen Maschine zum abfraesen von strassendecken
DE2442348A1 (de) * 1974-09-04 1976-03-18 Marks & Co Fraeswalze fuer strassenfraesmaschinen mit auswechselbar eingesetzten fraeszaehnen
DE3145713A1 (de) * 1981-11-19 1983-05-26 Marks GmbH, 4353 Oer-Erkenschwick Fraeswalze
EP0092128A1 (fr) * 1982-04-15 1983-10-26 Alfred Dr. Hackmack Equipement interchangeable combiné de fraisage et de coupe joint pour excavateur hydraulique, pelle chargeuse et chargeur frontal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BAUMASCHINE + BAUTECHNIK BMT, vol. 27, no. 4, April 1980, page 244, Wiesbaden, DE. *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252419A3 (en) * 1986-07-11 1989-06-14 Elda Barbieri Mobile self-propelled crushing machine
EP0252419A2 (fr) * 1986-07-11 1988-01-13 Elda Barbieri Appareil de concassage mobile autopropulsé
WO1990005214A1 (fr) * 1988-11-11 1990-05-17 Rapitex Systems Limited Ameliorations apportees a des machines d'epandage de revetement
US5579754A (en) * 1990-04-27 1996-12-03 Chiuminatta; Edward Apparatus and method for cutting unhardened concrete
EP0625937A1 (fr) * 1992-02-14 1994-11-30 CHIUMINATTA, Edward Procede et appareil pour decouper du beton humide
EP0625937A4 (fr) * 1992-02-14 1995-08-02 Edward Chiuminatta Procede et appareil pour decouper du beton humide.
US5570677A (en) * 1992-02-14 1996-11-05 Chiuminatta; Edward R. Method and apparatus for cutting wet concrete
US5575271A (en) * 1992-02-14 1996-11-19 Chiuminatta; Edward R. Apparatus for cutting wet concrete
US5579753A (en) * 1992-02-14 1996-12-03 Chiuminatta; Edward R. Method for cutting wet concrete
WO1994006965A1 (fr) * 1992-09-15 1994-03-31 Rota-Pic Limited Ameliorations apportees a un appareil de travaux publics
WO1995018707A1 (fr) * 1994-01-03 1995-07-13 Norton Company Scie a decouper un revetement de sol
AU695835B2 (en) * 1994-01-03 1998-08-20 Norton Company Pavement cutting saw
WO2000037887A2 (fr) * 1998-12-04 2000-06-29 Gary Cochran Appareil de controle de la profondeur d'un outil rotatif
WO2000037887A3 (fr) * 1998-12-04 2000-10-26 Gary Cochran Appareil de controle de la profondeur d'un outil rotatif
DE102009060481A1 (de) * 2009-12-18 2011-06-22 Kässbohrer Geländefahrzeug AG, 88471 Bodenbearbeitungsgerät mit einer angetriebenen Arbeitswellenanordnung
DE102009060481B4 (de) * 2009-12-18 2012-10-04 Kässbohrer Geländefahrzeug AG Heckfräse für eine Pistenraupe zur Schneepistengestaltung und -pflege
EP2339072A3 (fr) * 2009-12-18 2013-07-03 Kässbohrer Geländefahrzeug AG Appareil de traitement de sol doté d'un agencement d'arbres de travail entraînés
US8646542B2 (en) 2009-12-18 2014-02-11 Kaessbohrer Gelaendefahrzeug Ag Ground preparation appliance having a driven working shaft arrangement
CN102529581A (zh) * 2011-12-30 2012-07-04 安徽三井工程机械有限公司 切缝机行走轮
US20220290384A1 (en) * 2021-03-15 2022-09-15 Wirtgen Gmbh Self-propelled construction machine or mining machine
US11993898B2 (en) * 2021-03-15 2024-05-28 Wirtgen Gmbh Self-propelled construction machine or mining machine

Also Published As

Publication number Publication date
GB2152118A (en) 1985-07-31
GB8331266D0 (en) 1983-12-29
EP0143003A3 (fr) 1986-07-23
GB8429692D0 (en) 1985-01-03

Similar Documents

Publication Publication Date Title
EP0143003A2 (fr) Machine de fraisage ou de coupe
US4878713A (en) Pavement planing machine
US6247757B1 (en) Rotatable implement depth control apparatus
US5794714A (en) Finish dirt scraper
US6135567A (en) Rotatable implement depth control apparatus
US5237761A (en) Rotary ditcher having ripper blades
US20060117611A1 (en) Excavating machine for rocky and other soils
US5873186A (en) Excavating machine with cleaning device
US4193217A (en) Pivotable bucket with a rotatable earth moving mechanism
US6055750A (en) Excavating machine with lift arm assembly
WO1994006965A1 (fr) Ameliorations apportees a un appareil de travaux publics
US4395834A (en) Method and apparatus for excavating trenches
US3049817A (en) Roadway machine
US8176990B2 (en) Apparatus for removing obstructions from a worksite
US3308564A (en) Combination excavating trimming machine
GB2247484A (en) Road cutter
JPS60261810A (ja) 支持車両に取り付けて使用するアタツチメント装置
US20120030973A1 (en) Earth mover which continuously excavates a trench and simultaneously clears the excavated trench of spoils
US1411999A (en) Ditching machine
AU594078B2 (en) Improvements to trench digging apparatus
GB2031049A (en) Method and Apparatus for Excavating Trenches
WO1997044534A1 (fr) Scie de taille de tranchees
GB2269613A (en) Digging apparatus
AU742260B2 (en) Trench digging saw
JPH0748762Y2 (ja) 溝掘機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: E01C 23/08

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870124

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PARKER, RONALD PETERC/O BOWMER & KIRKLAND

Inventor name: MORRIS, ALAN RICHARDC/O BOWMER & KIRKLAND