EP0982439B1 - Front loader boom - Google Patents

Front loader boom Download PDF

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Publication number
EP0982439B1
EP0982439B1 EP99115855A EP99115855A EP0982439B1 EP 0982439 B1 EP0982439 B1 EP 0982439B1 EP 99115855 A EP99115855 A EP 99115855A EP 99115855 A EP99115855 A EP 99115855A EP 0982439 B1 EP0982439 B1 EP 0982439B1
Authority
EP
European Patent Office
Prior art keywords
tool
loader
arm
vehicle
arm element
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
EP99115855A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0982439A1 (en
Inventor
Erich Girstenbrei
Peter Reiterer
Horst-Martin Weident
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.)
AGCO GmbH and Co
Original Assignee
AGCO GmbH and Co
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 AGCO GmbH and Co filed Critical AGCO GmbH and Co
Publication of EP0982439A1 publication Critical patent/EP0982439A1/en
Application granted granted Critical
Publication of EP0982439B1 publication Critical patent/EP0982439B1/en
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
    • 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
    • E02F3/34—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 with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines

Definitions

  • the invention relates to a set of front loaders for vehicles, and comprising front loaders consisting of two laterally spaced apart loader arms with differing chordal measurements which
  • a front loader set may comprise several front loaders of differing chordal measurements, which will depend on the size of the carrier vehicle or the intended use.
  • chordal measurement refers to the shortest distance between the joint by which a loader arm is supported on the carrier vehicle, and a joint at the free end region of the loader arm about which a support frame receiving the tool can be pivoted.
  • the front loaders of sets known to date consist of loader arms with arm elements of different lengths at the vehicle end and tool end which in addition subtend differing angles.
  • front loaders which have a parallel guide-linkage for the tool brings with it a disadvantage, since modifications have to be made to the linkage in order to obtain the smallest possible deviations from the parallel motion.
  • each loader in the set requires a plurality of different reversing levers, which makes rationalised manufacture of the front loader more difficult.
  • US 5,533,856 describes a front-end loader having a parallelogram linkage, and a hydraulic tilt assembly which serves to maintain the attitude of a loader tool mounted on the front-end loader throughout a lift range.
  • the objective of the invention is to provide a set of front-loaders of the type outlined above, the front-loaders of which, and in particular the parallel guide-linkages, are made up of as many common parts as possible.
  • the invention provides a set of front-end loaders for carrier vehicles as specified in Claim 1.
  • the front-loaders of a set of the invention differ only in terms of the arm element at the tool end and the tipping cylinders, the length of which will depend on the desired chordal measurement of the respective front-loader.
  • the reversing levers are the same in all front-loaders of the set.
  • the invention offers another feature whereby the arm element at the tool end consists of an end-piece, which is of the same form for all front-loaders of a set or range, co-operating with the tool frame receiving the tool, and an intermediate piece adjusted to the desired chordal measurement. Consequently, the end region of the loader arms, which is of complex construction, with the articulated joints for the reversing lever and the tool frame, can be designed to fit all front-loaders, whereas only the intermediate pieces will be of differing lengths, these intermediate pieces being relatively simple in construction.
  • the front loader illustrated in Figure 1 consists of two loader arms 1 arranged spaced laterally at a distance apart from one another.
  • Each loader arm is made up of an arm element 2 at the tool end and an arm element 3 inclined relative thereto at the vehicle-end, and is welded in the region between two link plates 4 between which the spars 2, 3 are received.
  • the two loader arms 1 are joined by means of two tubular members 5, 6 to give a stable unit.
  • Located at the free ends of the element 3 at the vehicle end is a first articulated joint 7 with a horizontal axis, by means of which the loader arm 1 is hinged-mounted on a front loader frame, not illustrated, which is mounted on a carrier vehicle so that the front loader can be pivoted in a vertical plane with the aid of hydraulic positioning cylinders.
  • an articulated joint 8 for pivotally mounting a tool frame 9, which will receive the work tool 10 to be used.
  • the distance of this joint 8 from the first joint 7 is defined as chordal measurement S1 of the front loader arm, which is relatively small in this particular embodiment of the invention.
  • the front loader is fitted with a parallel guide linkage.
  • This has two reversing levers 11, 12 and of these the dual-arm reversing lever 11 is mounted in a second articulated joint 13 at the link-plate end terminal region of the element 3 at the vehicle end.
  • the reversing lever 12 is mounted in a third articulated joint 14 arranged off-centre in the peripheral region of the element 2 at the tool end.
  • the parallel guide-linkage is completed by a push rod 15 pivotally mounted between the one arm of the reversing lever 11 and the front loader frame (not illustrated) and a tipping ram 16 pivotally mounted between the reversing levers 11, 12.
  • the cylinder 16 pivots the tool frame 9 with the fitted work tool 10 about the joint 8 along with a pivotally mounted push rod 17 arranged between the reversing lever 12 and the tool frame 9.
  • the tipping ram 16 is illustrated schematically by its longitudinal axis only.
  • the front loader illustrated in Figure 2 is one of a range which differs by their respective chordal measurement.
  • the front loader illustrated in Figure 2 has a considerably larger chordal measurement S2 and is therefore capable of servicing a significantly broader work range.
  • the loader arms 18 of this front loader have elements 19 at the tool end which are longer than those described above and a tipping ram 16 of matching length. All other components are the same as those described with reference to the first front loader described above.
  • This advantage is achieved by an arrangement in which the third joint 20 for the reversing lever 21 subtends with the first joint 22 at the front loader frame end and the second joint 23 for the reversing lever 24 an angle that is the same for all front loaders of a range.
  • Figure 3 depicts a front loader which belongs to a different range in which intermediate members are used to adapt to the differing element lengths S3 of the loader arms 25.
  • the element 26 at the tool end includes a member 27, which is the same length for all arms in the range, and which, in the same way as the tool-end element 2 of the front loader illustrated in Figures 1 and 2, is permanently connected to the vehicle-end element 3.
  • an end-piece 28 at the free end of the member 27 provides a link with the tool frame 9 receiving the tool 10 and is the same size for all tool-end members in this range.
  • the member 27 is provided with a flange 27a and the end piece 28 is provided with a flange 28a, which enable the two components 27, 28 to be detachably connected to one another.
  • an intermediate member 30 with flanges 30a, 30b at its ends is arranged between the member 27 and the end-piece 28, the length thereof being adjusted to the desired chordal measurement S3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Shovels (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Catching Or Destruction (AREA)
  • Soil Working Implements (AREA)
  • Processing Of Meat And Fish (AREA)
  • Sorting Of Articles (AREA)
  • Jib Cranes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Vehicle Body Suspensions (AREA)
EP99115855A 1998-08-25 1999-08-12 Front loader boom Expired - Lifetime EP0982439B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9818515 1998-08-25
GB9818515A GB2340816B (en) 1998-08-25 1998-08-25 Adjustable arm length for front-end loader

Publications (2)

Publication Number Publication Date
EP0982439A1 EP0982439A1 (en) 2000-03-01
EP0982439B1 true EP0982439B1 (en) 2004-01-28

Family

ID=10837804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115855A Expired - Lifetime EP0982439B1 (en) 1998-08-25 1999-08-12 Front loader boom

Country Status (5)

Country Link
EP (1) EP0982439B1 (cs)
AT (1) ATE258624T1 (cs)
CZ (1) CZ298065B6 (cs)
DE (1) DE69914424T2 (cs)
GB (1) GB2340816B (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE528914C2 (sv) * 2004-09-29 2007-03-13 Aaloe Ab Lastare innefattande två parallellt anordnade armkonstruktioner som i sin tur innefattar långsträckta armpartier och parallellstag
DE102006044533A1 (de) * 2006-09-21 2008-04-03 Wilhelm Stoll Maschinenfabrik Gmbh Frontlader mit mechanischer Parallelführung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5533856A (en) * 1995-05-22 1996-07-09 Deere & Company Combined loaded self-leveling and implement tilt linkages for effecting true level and enhanced roll back and dump characteristics throughout lift range of loader

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449160A (en) * 1946-04-02 1948-09-14 Reconstruction Finance Corp Vehicle mounted front end loader
US3384256A (en) * 1967-02-06 1968-05-21 Kasmir E. Ulaky Hydraulically operated scoop
US3844370A (en) * 1972-10-11 1974-10-29 E Mullen Loading machine
FR2258496B1 (cs) * 1974-01-21 1976-06-25 Poclain Sa
US4034876A (en) * 1974-05-28 1977-07-12 Caterpillar Tractor Co. Boom construction and method for making same
US4741662A (en) * 1980-03-14 1988-05-03 Gregory Schmiesing Material handling equipment
SE8101125L (sv) * 1981-02-19 1982-08-20 Karl Harvid Melin Frontlastare

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5533856A (en) * 1995-05-22 1996-07-09 Deere & Company Combined loaded self-leveling and implement tilt linkages for effecting true level and enhanced roll back and dump characteristics throughout lift range of loader

Also Published As

Publication number Publication date
CZ298065B6 (cs) 2007-06-13
DE69914424D1 (de) 2004-03-04
DE69914424T2 (de) 2004-11-11
CZ303899A3 (cs) 2000-03-15
GB2340816A (en) 2000-03-01
GB9818515D0 (en) 1998-10-21
ATE258624T1 (de) 2004-02-15
GB2340816B (en) 2002-10-09
EP0982439A1 (en) 2000-03-01

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