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EP3456887A1 - Flèche de pelle et pelle excavatrice - Google Patents

Flèche de pelle et pelle excavatrice Download PDF

Info

Publication number
EP3456887A1
EP3456887A1 EP18194014.9A EP18194014A EP3456887A1 EP 3456887 A1 EP3456887 A1 EP 3456887A1 EP 18194014 A EP18194014 A EP 18194014A EP 3456887 A1 EP3456887 A1 EP 3456887A1
Authority
EP
European Patent Office
Prior art keywords
boom
bearing
bearing plates
plates
cantilever
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
EP18194014.9A
Other languages
German (de)
English (en)
Other versions
EP3456887B1 (fr
Inventor
Guillaume Elbel
Thomas Münch
Pascal FRITSCH
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.)
Liebherr France SAS
Original Assignee
Liebherr France SAS
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 Liebherr France SAS filed Critical Liebherr France SAS
Publication of EP3456887A1 publication Critical patent/EP3456887A1/fr
Application granted granted Critical
Publication of EP3456887B1 publication Critical patent/EP3456887B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/125—Locking devices
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/14—Booms only for booms with cable suspension arrangements; Cable suspensions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
    • E02F9/0825—Cast frame structure

Definitions

  • the invention relates to a boom for an earthmoving machine, in particular an excavator, with at least two bearing plates for supporting a cylinder unit, these run at least largely parallel to each other in the boom longitudinal direction.
  • the object of the present invention is to search for possible solutions in the design of the bearings for generic boom structures.
  • boom according to the features of claim 1.
  • Advantageous embodiments of the boom are the subject of the dependent claims.
  • the term boom is used extensively. It also includes, for example, a so-called style.
  • the generic cantilever it is proposed for the generic cantilever to carry out the bearing plate (s) with a curvature extending end-to-end to the side edge of the outer layer.
  • the invention applies to boom versions with only one bearing plate as well as for such versions with two or more bearing plates.
  • the invention and its advantageousnesse is always described below with reference to a design with two bearing plates, however, the following explanations apply equally to a boom design with only one or more than two bearing plates.
  • At least one bearing plate or both bearing plates are guided end-to-end up to the edge of the boom upper side and adjoin the formed edge of the boom surface with the side surfaces. Furthermore, it is provided here that the boom top is widened in the region of the outwardly extending bearing plates, ie the entire boom profile is wider in the area of the at least one or the adjacent bearing plates, so that the latter are extended beyond the original edge between the surface and side part and on the extended boom area, ie the lateral broadening of the boom are positioned. By this construction, the ends of the bearing plates less claimed.
  • the or the bearing plates may be mounted vertically standing on the boom top.
  • the boom may be composed of a rear and front boom part cohesively to a boomerangähnlichen boom structure, but the invention is in principle applicable to any boom structure.
  • bearing plates extend outwards, each with an identical radius of curvature. However, it is also conceivable to provide individual bearing plates with different radii of curvature.
  • the corresponding attachment may additionally have a corresponding boom extension, with a corresponding cylinder unit then serves to actuate the boom extension.
  • the curvature of the bearing or plates directly adjoins a bolt receiving the bearing plates.
  • Corresponding bearing plates are usually formed by a bearing plate, which provides in the region of the widest point, a matching hole for receiving a bearing pin.
  • the width of the bearing plates can usually be reduced steadily.
  • the width of the cantilever tip is preferably a sudden reduction of the sheet width, wherein the reduced in width bearing plate then guided outwardly with an appropriate radius of curvature to the edge of the cantilever surface.
  • the boom construction is composed of at least one front and at least one rear boom part.
  • the one or more bearing plates may, for example, at least largely extend on the boom upper side of the front jib part.
  • at least one upper connecting plate can be provided in the connecting region between the jib parts, which ideally represents a part of the jib top in the connecting region of the jib parts.
  • the connecting plate provides a suitable curvature depending on the angle of the two jib parts to each other. In the case of such a special design of the boom, it is particularly advantageous if the bearing plates extend from the boom top of the front jib part up to the upper connecting plate.
  • the present invention also relates to an earthmoving machine, in particular an excavator with at least one boom according to the present invention. Accordingly, the advantages and properties of the earthmoving machine obviously correspond to the advantages and properties already discussed in connection with the excavator boom according to the invention, which is why a repetitive description is omitted here.
  • FIG. 1 This consists of a front boom part 11 and a rear boom part 12. At the front boom part connecting points 34 are provided for the movable mounting of an attachment not shown here or a boom extension.
  • the rear boom piece 12 has corresponding bearing points 16 at the end, in order to be able to tilt it on an excavator upper or undercarriage.
  • Both the rear and the front boom part can be made as a monoblock.
  • the jib parts 11, 12 composed of individual elements.
  • Both cantilever parts 11, 12 have a box-shaped structure, which is obtained by welding corresponding side plates.
  • the individual side plates 11a to 11d or 12a to 12d are welded together by fillet welding.
  • connection between the two jib parts 11, 12 is provided by the central connecting plate 13, wherein at least the end edges of the side plates 11a, 11b and 12a, 12b and optionally the lower sides 11d and 12d are materially connected to one another via the connecting plate 13.
  • the connecting plate 13 has a curved shape, which also has a curved contact edge of the jib parts 11, 12 along the side plates 11a, 11b, 12a, 12b results.
  • the connecting plate 13 is designed as a simple, thick sheet. It allows a simple connection between the boom parts 11, 12 and accordingly a simple adaptation to the desired angle, the two boom elements 11, 12 form.
  • the boom surfaces 11c and 12c of the boom parts 11, 12 are not directly in communication with each other. Instead, here is a plate-shaped upper connecting plate 15 is inserted or overlapping on the tops 11c, 12c mounted, and welded with two boom parts 11, 12. The plate-shaped upper connecting plate 15 is bent according to the angle that form both cantilever parts 11, 12 to each other.
  • the boom base could be configured with a corresponding connecting element.
  • a cylindrical tube 21 through the jib box 12 which is welded onto the central connecting plate 13.
  • the application of the bearing tube 21 to the central connecting plate 13 at the same time ensures that the entire rigidity of the boom can be additionally increased.
  • a suitable bolt Via outlet openings 21a, 21b within the side elements 12a, 12b, a suitable bolt can be inserted into the cylinder tube 21.
  • additional reinforcing plates 22 are additionally provided on the outside of the side plates 12a, 12b.
  • the tube 21 forms the bearing point for connecting a luffing cylinder of the excavator according to the invention, which extends from the bearing point 21 of the rear jib part 12 to the superstructure of the excavator.
  • an additional bearing 30 is provided which allows a receptacle of a cylinder which extends from the bearing 30 to a mounted on the bearing attachment.
  • the bearing 30 consists of two parallel bearing plates 30a, 30b, which are perpendicular to the boom top and parallel in the boom longitudinal direction. In the region with the greatest width, in each case a bore 31 a, 31 b is provided for bolt receptacles, the bore edge being reinforced with additional metal sheets 32.
  • the width of the bearing plates 30 a, 30 b steadily decreases in the direction of the rear jib part 12.
  • the majority of the bearing plates including the holes 31a, 31b is arranged on the upper side 11a of the front jib part 11, however, both plates 30a, 30b extend in parallel except for the upper connecting plate 15, with which the sheet ends are welded.
  • the extension of the bearing plates 30a, 30b up to the connecting plate 15 has the advantage that the end of the weld formed is in a less stressed region of the boom, which not only the material fatigue resistance can be increased, but also manufacturing costs can be reduced because in this If no additional treatment of the weld is necessary.
  • the width of the bearing plates 30a, 30b abruptly decreases after the bore 31a, 31b in the direction of the cantilever tip and then remains almost constant.
  • This bearing plate portion 33a, 33b with reduced but almost constant width have a curvature, so that the sheet portions 33a, 33b not parallel to each other, but outwardly to the edges of the surface 11c of the front jib portion 11 protrude.
  • the upper plate 11a of the front jib part 11 can be widened in the region of the bearing plate sections 33a, 33b adjoining the edge, so that the plate elements 33a, 33b can protrude beyond the actual edge of the front jib part.
  • the overall rigidity of the bearing can be increased without, however, the strength of the bearing plates 30a, 30b need to increase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Jib Cranes (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP18194014.9A 2017-09-15 2018-09-12 Flèche de pelle et pelle excavatrice Active EP3456887B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017121516.6A DE102017121516A1 (de) 2017-09-15 2017-09-15 Baggerausleger und Bagger

Publications (2)

Publication Number Publication Date
EP3456887A1 true EP3456887A1 (fr) 2019-03-20
EP3456887B1 EP3456887B1 (fr) 2021-06-09

Family

ID=63579054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18194014.9A Active EP3456887B1 (fr) 2017-09-15 2018-09-12 Flèche de pelle et pelle excavatrice

Country Status (5)

Country Link
US (1) US10378182B2 (fr)
EP (1) EP3456887B1 (fr)
CN (1) CN109505319B (fr)
DE (1) DE102017121516A1 (fr)
ES (1) ES2887347T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017110412B4 (de) * 2017-05-12 2020-06-10 Liebherr-Werk Ehingen Gmbh Teleskopausleger und Mobilkran
DE102017121518A1 (de) * 2017-09-15 2019-03-21 Liebherr-France Sas Baggerausleger und Bagger
DE102019116394A1 (de) 2019-06-17 2020-12-17 Liebherr-France Sas Baggerstiel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6376057U (fr) * 1986-11-07 1988-05-20
JPH06220884A (ja) * 1993-01-21 1994-08-09 Yanmar Diesel Engine Co Ltd バックホーのブーム構造
WO1999000554A1 (fr) * 1997-06-30 1999-01-07 Caterpillar Inc. Ensemble bras de levage avec fleche de type caisse
JP2010106463A (ja) * 2008-10-28 2010-05-13 Sumitomo Heavy Ind Ltd 建設機械のアタッチメント

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151687Y2 (fr) * 1972-06-20 1976-12-10
US4069637A (en) 1976-08-09 1978-01-24 Caterpillar Tractor Co. Tubular section boom
WO1997028315A1 (fr) * 1996-01-31 1997-08-07 Hitachi Construction Machinery Co., Ltd. Pelle hydraulique
GB2343174B (en) 1997-07-15 2001-10-31 Komatsu Mfg Co Ltd Boom of bucket type excavator and producing method thereof
JP2002364017A (ja) * 2001-06-05 2002-12-18 Shin Caterpillar Mitsubishi Ltd 建設機械におけるブーム構造
JP4566935B2 (ja) * 2006-03-13 2010-10-20 ヤンマー株式会社 掘削作業機のブーム
JP5072956B2 (ja) * 2007-04-25 2012-11-14 株式会社小松製作所 作業機ブーム
US20140056677A1 (en) * 2011-04-20 2014-02-27 Hitachi Construction Machinery Co., Ltd. Boom for construction machine
JP5932541B2 (ja) 2011-09-30 2016-06-08 オリンパス株式会社 ズームレンズ、それを用いた撮像装置、映像伝送装置及び映像伝送システム
JP2016089375A (ja) * 2014-10-30 2016-05-23 日立建機株式会社 建設機械用ブーム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6376057U (fr) * 1986-11-07 1988-05-20
JPH06220884A (ja) * 1993-01-21 1994-08-09 Yanmar Diesel Engine Co Ltd バックホーのブーム構造
WO1999000554A1 (fr) * 1997-06-30 1999-01-07 Caterpillar Inc. Ensemble bras de levage avec fleche de type caisse
JP2010106463A (ja) * 2008-10-28 2010-05-13 Sumitomo Heavy Ind Ltd 建設機械のアタッチメント

Also Published As

Publication number Publication date
CN109505319A (zh) 2019-03-22
EP3456887B1 (fr) 2021-06-09
US10378182B2 (en) 2019-08-13
ES2887347T3 (es) 2021-12-22
DE102017121516A1 (de) 2019-03-21
CN109505319B (zh) 2022-07-12
US20190085533A1 (en) 2019-03-21

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