EP1264938A1 - Engin de travaux publics et dispositif d'actionnement du déplacement latéral d'une pelle de chargement - Google Patents

Engin de travaux publics et dispositif d'actionnement du déplacement latéral d'une pelle de chargement Download PDF

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Publication number
EP1264938A1
EP1264938A1 EP02076988A EP02076988A EP1264938A1 EP 1264938 A1 EP1264938 A1 EP 1264938A1 EP 02076988 A EP02076988 A EP 02076988A EP 02076988 A EP02076988 A EP 02076988A EP 1264938 A1 EP1264938 A1 EP 1264938A1
Authority
EP
European Patent Office
Prior art keywords
actuating
rail
telescopic
cylinder
machine
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
EP02076988A
Other languages
German (de)
English (en)
Other versions
EP1264938B1 (fr
Inventor
Giuseppe Burgo
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.)
CNH Industrial Italia SpA
Original Assignee
CNH Industrial Italia SpA
New Holland Italia SpA
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 CNH Industrial Italia SpA, New Holland Italia SpA filed Critical CNH Industrial Italia SpA
Publication of EP1264938A1 publication Critical patent/EP1264938A1/fr
Application granted granted Critical
Publication of EP1264938B1 publication Critical patent/EP1264938B1/fr
Anticipated expiration legal-status Critical
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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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E02F3/386—Connections to the frame; Supports for booms or arms the boom being laterally shiftable relative to the frame

Definitions

  • the present invention relates to an earthmoving machine, more specifically referred to as a tractor loader backhoe (TLB).
  • TLB tractor loader backhoe
  • Such vehicle comprises a supporting frame having a given longitudinal axis, provided at the front with a larger loader mechanism and at the rear with a foldable backhoe arm structure having a shovel or bucket of smaller dimensions at its free end.
  • actuating means are required for moving the backhoe linearly along the guide rail.
  • such actuating means takes the form of a hydraulic cylinder which is connected to a semi-loop shaped chain guided over oppositely provided guide rollers; the chain in turn being attached to the sledge supporting the backhoe structure.
  • the loop in the chain is provided to double the stroke of the hydraulic cylinder enabling a cylinder of a length equalling only half the width of the vehicle to nevertheless move the backhoe structure fully from one side of the vehicle to the other.
  • the actuating means consists of a hydraulic actuator cylinder directly connected to the sledge supporting the backhoe instead of through a chain mechanism.
  • the hydraulic cylinder which is essentially a telescopic device, is fixed at one end to the vehicle supporting frame, extends parallel to the guide rail, and has an output rod fixed at the free end to the sledge supporting the backhoe.
  • the cylinder is movable between an extracted position, in which the output rod is substantially outside the actuator cylinder, and a withdrawn position, in which the output rod is substantially inside the actuator cylinder.
  • telescopic device is intended to mean a device comprising at least two members sliding one inside the other.
  • an earthmoving machine having a given longitudinal axis, and comprising :
  • the earthmoving machine is characterized in that said actuating means comprise at least two telescopic actuating devices arranged in series.
  • Number 1 in Figure 1 indicates as a whole an earthmoving machine or TLB comprising a frame 2 having a longitudinal axis 3, the frame being supported by two conventional axles (not shown) extending perpendicular to axis 3 and each in turn being supported by a pair of wheels 4.
  • Machine 1 further comprises a cab 5 fitted to the frame 2 and having a steering wheel 6 and a seat 7 for the operator of machine 1.
  • Two conventional loading shovels 8, 9 are located on opposite sides of the cab 5 along axis 3; shovel or loader 8 being located on the front side of the machine and shovel or backhoe 9 being located on the rear side of the machine.
  • frame 2 comprises two uprights 10 located on opposite sides of axis 3 and extending parallel to a direction 11 perpendicular to axis 3.
  • the uprights 10 house a stabilising mechanism which can be brought into contact with the ground for improving the stability of the vehicle when operating the backhoe 9.
  • Two guide rails 12 extend between the uprights 10 in a direction 13 perpendicular to direction 11 and to axis 3, and slidably support a sledge 14 forming part of the backhoe 9.
  • Sledge 14 is moved linearly along rails 12 in the direction 13 by an actuating device 15 comprising an actuating cylinder 16, which is fixed at the free end to one of the uprights 10.
  • Cylinder 16 has an axis 17 substantially parallel to direction 13 and hence to the sledge 14 and comprises an output rod 18.
  • Rod 18 is a telescopic rod coaxial with axis 17 and comprises on the one hand an outer portion 18a mounted to slide inside cylinder 16 and on the other hand an inner portion 18b mounted to slide inside portion 18a. A free end of inner portion 18b is connected to the sledge 14 through a spherical joint 19 for compensating for any impact on slide 14 which, without joint 19, might flex and/or deform rod 18.
  • Rod 18 is movable between a withdrawn start position ( Figures 2b and 3b), in which rod 18 is housed inside cylinder 16, and sledge 14 is positioned contacting a first stop member 20a, and an extracted end position ( Figures 2a and 3a), in which the whole of rod 18 extends outside cylinder 16, and sledge 14 is positioned contacting a second stop member 20b.
  • Rod portion 18a therefore defines, together with cylinder 16 and rod portion 18b, a first and, respectively, a second telescopic device 21a, 21b, which in turn define actuating device 15.
  • Sledge 14 is provided with a known locking device 22 for maintaining sledge 14, and therefore the backhoe 9, in a given position along the rails 12.
  • the device 22 comprises a number of actuating cylinders 23 (four in the example shown) connected to the sledge 14, parallel to axis 3 and facing the rails 12.
  • the actuating cylinders 23 have respective output rods (not shown), each of which is movable to and from an extracted position in which the output rod engages a respective rail 12, for locking the sledge 14 in position relative to the rails 12.
  • the sledge 14 occupies approximately one third of the width of the machine 1, while the actuating device 15, in its fully retracted position, is fully contained within the width of the sledge. Due to the provision of the double telescopic actuator 15, the sledge 14 is operable to travel the full width of the machine 1 without any part of the actuator device 15 ever laterally sticking out of the machine 1 in whatever position of the sledge 14. It will be appreciated that if the width of the sledge 14 would be reduced further e.g. to 1/4 of the vehicle width, then a triple telescopic actuator 15 could be employed, obtaining the same result.
  • Machine 1 in the Figures 4 and 5 embodiment differs from the Figures 2 and 3 machine by actuating device 15 comprising two actuating cylinders 24, 25, each defining a respective telescopic device, and which have respective axes 26, 27 substantially parallel to each other and to direction 13, are arranged substantially in series with each other, and are positioned facing respective uprights 10.
  • actuating device 15 comprising two actuating cylinders 24, 25, each defining a respective telescopic device, and which have respective axes 26, 27 substantially parallel to each other and to direction 13, are arranged substantially in series with each other, and are positioned facing respective uprights 10.
  • Cylinders 24, 25 have respective output rods 28, 29, which are coaxial with respective axes 26, 27, and are mounted to slide inside respective cylinders 24, 25. More specifically, rod 29 is fixed at the free end to one of uprights 10, while rod 28 is connected at the free end to sledge 14 with the interposition of a spherical joint 30.
  • Each rod 28, 29 is movable between on the one hand a withdrawn start position ( Figures 4b and 5b), in which rod 28, 29 is housed inside respective cylinder 24, 25, and sledge 14 is positioned contacting stop member 20a and on the other hand an extracted end position ( Figures 4a and 5a), in which the whole of rod 28, 29 extends outside respective cylinder 24, 25, and sledge 14 is positioned contacting stop member 20b.
EP02076988.1A 2001-06-08 2002-05-21 Engin de travaux publics et dispositif d'actionnement du déplacement latéral d'une pelle de chargement Expired - Lifetime EP1264938B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001BO000365A ITBO20010365A1 (it) 2001-06-08 2001-06-08 Macchina movimento terra e dispositivo attuatore per lo spostamento laterale di una relativa pala caricatrice
ITBO20010365 2001-06-08

Publications (2)

Publication Number Publication Date
EP1264938A1 true EP1264938A1 (fr) 2002-12-11
EP1264938B1 EP1264938B1 (fr) 2013-08-07

Family

ID=11439410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02076988.1A Expired - Lifetime EP1264938B1 (fr) 2001-06-08 2002-05-21 Engin de travaux publics et dispositif d'actionnement du déplacement latéral d'une pelle de chargement

Country Status (2)

Country Link
EP (1) EP1264938B1 (fr)
IT (1) ITBO20010365A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7076896B2 (en) 2002-03-06 2006-07-18 Cnh America Llc Control for an operating arm of an earthmoving vehicle
ITTO20090421A1 (it) * 2009-06-03 2010-12-04 Cnh Italia Spa Attuatore idraulico per un carrello scorrevole
GB2559582A (en) * 2017-02-09 2018-08-15 Edwards Farm Machinery Ltd Side-shift attachment for tractor
DE102019007732A1 (de) * 2019-11-07 2021-05-12 Gerhard Dücker GmbH & Co. KG Landmaschinenfabrik Mäh- und/oder Schneidgerät

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294216B (de) * 1962-07-05 1969-04-30 Masera Arturo Hydraulischer Stellmotor mit Teleskopkolben, insbesondere fuer Kraene
US3785705A (en) * 1972-09-20 1974-01-15 Constr Materials Inc Concrete median and curb sawing machine
JPS4939903A (fr) 1972-08-24 1974-04-15
AU5111873A (en) * 1972-01-18 1974-07-25 Equipment Co Pty Ltd Const Improvement in backhoes
GB1368255A (fr) * 1971-09-03 1974-09-25 Int Harvester Co
US4020745A (en) * 1974-11-05 1977-05-03 Mitsubishi Jukogyo Kabushiki Kaisha Power slide mechanism
US4113031A (en) * 1977-07-25 1978-09-12 J. I. Case Company Power shift mechanism for earth working implements
EP0692579A1 (fr) 1994-07-16 1996-01-17 J.C. Bamford Excavators Limited Châssis coulissant à commande hydraulique pour pelle hydraulique
EP0718444A1 (fr) * 1994-12-21 1996-06-26 Nikken Corporation Alimentation en huile sous pression pour excavation à grande profondeur d'excavation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294216B (de) * 1962-07-05 1969-04-30 Masera Arturo Hydraulischer Stellmotor mit Teleskopkolben, insbesondere fuer Kraene
GB1368255A (fr) * 1971-09-03 1974-09-25 Int Harvester Co
AU5111873A (en) * 1972-01-18 1974-07-25 Equipment Co Pty Ltd Const Improvement in backhoes
JPS4939903A (fr) 1972-08-24 1974-04-15
US3785705A (en) * 1972-09-20 1974-01-15 Constr Materials Inc Concrete median and curb sawing machine
US4020745A (en) * 1974-11-05 1977-05-03 Mitsubishi Jukogyo Kabushiki Kaisha Power slide mechanism
US4113031A (en) * 1977-07-25 1978-09-12 J. I. Case Company Power shift mechanism for earth working implements
EP0692579A1 (fr) 1994-07-16 1996-01-17 J.C. Bamford Excavators Limited Châssis coulissant à commande hydraulique pour pelle hydraulique
EP0718444A1 (fr) * 1994-12-21 1996-06-26 Nikken Corporation Alimentation en huile sous pression pour excavation à grande profondeur d'excavation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7076896B2 (en) 2002-03-06 2006-07-18 Cnh America Llc Control for an operating arm of an earthmoving vehicle
ITTO20090421A1 (it) * 2009-06-03 2010-12-04 Cnh Italia Spa Attuatore idraulico per un carrello scorrevole
WO2010139748A1 (fr) 2009-06-03 2010-12-09 Cnh Italia Spa Actionnement hydraulique pour un chariot coulissant
GB2559582A (en) * 2017-02-09 2018-08-15 Edwards Farm Machinery Ltd Side-shift attachment for tractor
DE102019007732A1 (de) * 2019-11-07 2021-05-12 Gerhard Dücker GmbH & Co. KG Landmaschinenfabrik Mäh- und/oder Schneidgerät
DE102019007732B4 (de) 2019-11-07 2022-08-11 Gerhard Dücker GmbH & Co. KG Landmaschinenfabrik Mäh- und/oder Schneidgerät

Also Published As

Publication number Publication date
ITBO20010365A0 (it) 2001-06-08
EP1264938B1 (fr) 2013-08-07
ITBO20010365A1 (it) 2002-12-08

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