EP1152091B1 - Bras de chargeur - Google Patents

Bras de chargeur Download PDF

Info

Publication number
EP1152091B1
EP1152091B1 EP01110548A EP01110548A EP1152091B1 EP 1152091 B1 EP1152091 B1 EP 1152091B1 EP 01110548 A EP01110548 A EP 01110548A EP 01110548 A EP01110548 A EP 01110548A EP 1152091 B1 EP1152091 B1 EP 1152091B1
Authority
EP
European Patent Office
Prior art keywords
carrier tube
web
loader arm
loader
recess
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
EP01110548A
Other languages
German (de)
English (en)
Other versions
EP1152091A2 (fr
EP1152091A3 (fr
Inventor
Christophe Espanel
Cyrille Vittet
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.)
Deere and Co
Original Assignee
Deere 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 Deere and Co filed Critical Deere and Co
Publication of EP1152091A2 publication Critical patent/EP1152091A2/fr
Publication of EP1152091A3 publication Critical patent/EP1152091A3/fr
Application granted granted Critical
Publication of EP1152091B1 publication Critical patent/EP1152091B1/fr
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
    • E02F3/36—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making
    • Y10T29/49623—Static structure, e.g., a building component
    • Y10T29/49625—Openwork, e.g., a truss, joist, frame, lattice-type or box beam

Definitions

  • the invention relates to a loader rocker, in particular for a front loader, with a support tube and a method for its production.
  • Loaders are z. B. attached to farm tractors and are vertically movable to lift loads.
  • the loader includes a loader swing arm, at the cantilever end of which a tool is mounted, while the other end is hinged to the farm tractor. Due to the length of the loader and the attacking forces occur in the loader swing significant bending moments.
  • loader swing various measures have been taken to make a fundamentally square tube-like support tube more rigid. For example, it is proposed to nest two U-profiles (TRIMA Professional, BAAS TRIMA front loaders with PowerLink) or two square profiles (Faucheux) closed to 75% and weld them together.
  • two square hollow sections partially open on one broad side are laid together and welded together to form a closed rigid tube.
  • the CH-A-336 789 already shows a support tube in the interior of a fold is introduced.
  • wrinkling is manufacturing technology very expensive and can not be achieved with thick steel sheets.
  • a manufacturing method known from US-A-4 459 786 is concerned only with the production of a hollow profile, so that a plate welded there at the end of the production does not serve as a web, i.e. in the form of a web. as a planar component, which takes over by means of its web surface forces to relieve surrounding and associated with him areas, but to close the hollow profile.
  • a bending-resistant loader swing can be generated with simple and inexpensive to buy on the market semi-finished products.
  • the weight is kept low, it will be needed few and simple welds and the support tubes can be easily formed differently rigid.
  • the predetermined by the design of the web bending strength of the web is not limited by the cross-sectional dimensions of the support tube when the web projects beyond the outer surface of the support tube. In such a case, in addition openings or the like can be inserted or attached to the projecting parts of the web, to which components can be connected. In addition, the web can be held in the production by means of a tool in the correct weld-on position.
  • a smooth surface of the support tube is produced by the fact that the web terminates with its outer surface.
  • the support tube could in principle also have any cross-section, it is advantageous for handling in production and guidance of the forces if the support tube is formed from a tube with a square profile.
  • the support tube may be formed both cylindrical and tapered. The introduction of the recess in the narrow side of the square tube causes the web extends in the direction of the high web of the support tube, where the largest bending moments occur.
  • Conically extending walls or high webs of the support tube make it possible to adapt the load-bearing capacity to the expected or desired force diagram. In this way, a uniform load distribution and an optimized use of materials is achieved.
  • the inventive method for producing the inventive loader rocker makes it possible to support tubes produce various dimensions and in particular with a conical shape.
  • FIG. 1 shows a loader 10 with a loader rocker 12, a console 14, hydraulic motors 16 and a tool 18, which is attached to an unspecified and indicated only by means of a wheel 20 agricultural tractor.
  • the loader 10 is designed in the manner of a front loader, which is used in particular in agriculture or in the municipal sector and lifts loads of up to more than 1000 kg.
  • the loader rocker 12 extends between the bracket 14 and the tool 18 and has a kink of nearly 90 degrees. Due to the attacking forces the loader rocker is formed from a support tube 22 which widens conically in the preferred embodiment, in each case to the bend out in the plane of the drawing.
  • the console 14 is used to connect the loader rocker 12 to the tractor and takes the loader rocker 12 vertically pivotable.
  • the hydraulic motors 16 are used for vertical movement of the loader rocker 12 and are supported at one end on the bracket 14 and the other end on the loader rocker 12 in the buckling region each vertically pivotable from.
  • the hydraulic motors 16 are controlled in a known manner by a hydraulic system on the farm tractor. Between the loader rocker 12 and the tool 18 further hydraulic motors are provided in a known manner, which will not be discussed in more detail.
  • the tool 18 is shown as a blade with the z. As sand or the like. Can be included.
  • the wheel 20 is merely representative of the farm tractor and is a front steerable wheel. Another indicated curve stands for a mudguard.
  • the support tube 22 is shown in detail in section in Figure 2 and contains two formed as a high webs walls 24, formed as transverse webs narrow sides 26, a recess 28 and an inserted web 30th
  • the support tube 22 is designed as a tapered square tube, which is formed from an approximately 6 - 10 mm thick steel sheet.
  • the steel sheet is punched according to a development of the support tube 22, cut, or formed in any other way and then folded in the same direction by 90 degrees. The edging is done such that finally the recess 28 remains. While four bending edges are provided in the embodiment shown, a round, five, six or other tube profile could also be provided.
  • the position shown in Figure 2 corresponds to the actual installation position.
  • the walls 24 are parallel to each other and extend in the vertical direction.
  • the narrow sides 26 likewise run parallel to one another and perpendicular to the walls 24. While the upper narrow side 26 connects the two walls 24, the two lower narrow sides 26, which could also be referred to as an interrupted narrow side 26, terminate at the recess 28, respectively.
  • the width of the recess 28 corresponds substantially to the width of the web 30. If a clearance is selected, the web 30 can be easily inserted into the recess 28 and held by a tool until it is welded to the narrow sides 26. Alternatively, the walls 24 are pressed towards each other and hold the intermediate web 30 frictionally. In the case of a press fit, the recess 28 is first slightly widened, the web 30 then used and the narrow sides 26 then brought under bias to the web 30 to the plant. The expansion can be effected in a simple manner that the web 30 is slightly beveled at the entering into the interior of the support tube 22 end.
  • the web 30 is formed of a flat steel and regular cuboid. In the exemplary embodiment shown, the web 30 on the one hand projects beyond approximately half the height of the interior, while on the other hand it projects beyond the outer surface of the support tube 22 by approximately one sixth in the region of the section. If the male bending forces require it, the web 30 may also extend over the entire interior of the support tube 22 and further over the outer surface thereof.
  • the web 30 is welded to the ends of the narrow sides 26 by fillet welds. If the walls 24 are conical, while the web 30 is cuboid or rectangular, the region of the web 30 projecting beyond the support tube 22 assumes a wedge shape.
  • the web 30 extends only in the region of the support tube 22 between the kink and the console 14. Nevertheless, a web 30 can also be provided in the region between the kink and the tool 18. Differently than illustrated, the web 30 can also extend through the upper narrow side 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Vehicle Body Suspensions (AREA)
  • Agricultural Machines (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Circuits Of Receivers In General (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Shovels (AREA)
  • Supports For Plants (AREA)
  • Table Equipment (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Claims (8)

  1. Bras de chargeuse (12), en particulier pour une chargeuse frontale comportant un support tubulaire (22), caractérisé en ce que le support tubulaire (22) comporte des parois (24) orientées dans la direction de la sollicitation principale et comportant entre elles un évidement (28), dans lequel est introduite parallèlement ou sensiblement parallèlement à une paroi (24) une traverse (30) qui est soudée au support tubulaire (22).
  2. Bras de chargeuse selon la revendication 1, caractérisé en ce que la traverse (30) est en saillie sur la face extérieure du support tubulaire (22).
  3. Bras de chargeuse selon la revendication 1, caractérisé en ce que la traverse (30) est située à fleur de la face extérieure du support tubulaire (22).
  4. Bras de chargeuse selon une ou plusieurs des revendications précédentes, caractérisé en ce que le support tubulaire (22) est formé par un tube carré rectangulaire, dans le petit côté (26) duquel est ménagé l'évidement (28).
  5. Bras de chargeuse selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'évidement (28) s'étend sur toute la longueur du support tubulaire (22).
  6. Bras de chargeuse selon une ou plusieurs des revendications précédentes, caractérisé en ce que les parois (24) du support tubulaire (22) s'étendent en forme de cône.
  7. Procédé de réalisation d'un bras de chargeuse (12), caractérisé par les étapes de procédé suivantes :
    a) une tôle d'acier est découpée ou cisaillée suivant une projection du support tubulaire (22) du bras de chargeuse (12) ;
    b) la tôle d'acier est pliée, conformément au nombre d'arêtes du support tubulaire (22), en particulier quatre fois, en particulier à 90° dans chaque cas ;
    c) dans un évidement (28), subsistant entre les arêtes du support tubulaire (22) obtenu par pliage, est ajustée une traverse (30), de telle sorte qu'elle est sensiblement parallèle à une paroi (24) du support tubulaire (22), laquelle est orientée dans la direction de la sollicitation principale du support tubulaire (22) ;
    d) la traverse (30) est soudée au support tubulaire (22).
  8. Procédé selon la revendication 7, caractérisé en ce que la dimension et/ou le matériau de la traverse (30) sont choisis conformément à la charge attendue.
EP01110548A 2000-05-05 2001-04-28 Bras de chargeur Expired - Lifetime EP1152091B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10022021A DE10022021A1 (de) 2000-05-05 2000-05-05 Laderschwinge
DE10022021 2000-05-05

Publications (3)

Publication Number Publication Date
EP1152091A2 EP1152091A2 (fr) 2001-11-07
EP1152091A3 EP1152091A3 (fr) 2003-01-22
EP1152091B1 true EP1152091B1 (fr) 2006-06-28

Family

ID=7640956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110548A Expired - Lifetime EP1152091B1 (fr) 2000-05-05 2001-04-28 Bras de chargeur

Country Status (7)

Country Link
US (1) US6527496B2 (fr)
EP (1) EP1152091B1 (fr)
AT (1) ATE331846T1 (fr)
CA (1) CA2346323C (fr)
DE (2) DE10022021A1 (fr)
DK (1) DK1152091T3 (fr)
ES (1) ES2262571T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7377740B2 (en) * 2003-04-22 2008-05-27 Cook Technologies, Inc. Lifting device for a personal-transportation vehicle
US9592999B2 (en) * 2011-09-20 2017-03-14 Deere & Company Boom apparatus with nose body
CN103785995A (zh) * 2013-12-26 2014-05-14 柳州正菱集团有限公司 一种挖掘机回转平台中间平台的生产方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755572A (en) * 1952-09-06 1956-07-24 John S Pilch Loader
CH336789A (de) * 1955-05-15 1959-03-15 Baas Erwin Verfahren zur Herstellung eines Hohlträgers und der nach dem Verfahren hergestellte Träger und seine Verwendung in einem Lastheber
CH392811A (de) * 1961-09-07 1965-05-31 Nortag Aktiengesellschaft Rohrförmiger, für den Ladebaum eines Lasthebers zu verwendender Träger und Verfahren zu seiner Herstellung
CH393676A (de) * 1962-03-05 1965-06-15 Nortag Aktiengesellschaft Verfahren zum Herstellen eines Auslegerholmes
US3890696A (en) * 1973-05-10 1975-06-24 Earl R Buske Tow truck boom and method of constructing same
FR2379657A1 (fr) * 1977-02-02 1978-09-01 Int Harvester Co Fleche basculante pour chargeur monte sur un tracteur
US4459786A (en) * 1981-10-27 1984-07-17 Ro Corporation Longitudinally bowed transversely polygonal boom for cranes and the like
US4576543A (en) * 1983-11-07 1986-03-18 Kmw Products Limited Knock-down construction for front end loader
JPH0726415B2 (ja) * 1989-12-13 1995-03-22 株式会社クボタ 作業機のブームアセンブリ
DE4328662A1 (de) * 1993-08-26 1995-03-02 Krupp Ag Hoesch Krupp Auslegeprofil bzw. Klappspitzenprofil
JPH08119571A (ja) * 1994-10-19 1996-05-14 Yuji Uchiumi クレーンガーダ用鋼管
US5611657A (en) * 1995-03-13 1997-03-18 Case Corporation Reinforced loader arm assembly

Also Published As

Publication number Publication date
DE50110308D1 (de) 2006-08-10
ES2262571T3 (es) 2006-12-01
ATE331846T1 (de) 2006-07-15
US6527496B2 (en) 2003-03-04
CA2346323C (fr) 2005-04-19
DE10022021A1 (de) 2001-11-08
CA2346323A1 (fr) 2001-11-05
US20010038789A1 (en) 2001-11-08
EP1152091A2 (fr) 2001-11-07
DK1152091T3 (da) 2006-10-30
EP1152091A3 (fr) 2003-01-22

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