EP3456888A1 - Flèche de pelle et pelle excavatrice - Google Patents

Flèche de pelle et pelle excavatrice Download PDF

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Publication number
EP3456888A1
EP3456888A1 EP18194284.8A EP18194284A EP3456888A1 EP 3456888 A1 EP3456888 A1 EP 3456888A1 EP 18194284 A EP18194284 A EP 18194284A EP 3456888 A1 EP3456888 A1 EP 3456888A1
Authority
EP
European Patent Office
Prior art keywords
boom
connecting plate
jib
bearing
central
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
EP18194284.8A
Other languages
German (de)
English (en)
Other versions
EP3456888B1 (fr
Inventor
Guillaume Elbel
Johan Pleimelding
Thomas Münch
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 EP3456888A1 publication Critical patent/EP3456888A1/fr
Application granted granted Critical
Publication of EP3456888B1 publication Critical patent/EP3456888B1/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
    • 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
    • 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
    • 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
    • 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
    • Y10T29/49622—Vehicular structural member making

Definitions

  • the invention relates to a boom for an earthmoving machine, in particular an excavator, which is composed of a rear boom part and a front boom part cohesively to a boomerangähnlichen boom structure.
  • the central connection plate can be one-piece. However, it is also possible to assemble the central connecting plate from one or more individual sheets.
  • the central connection plate forms the contact surface between the two extension parts.
  • the central connecting plate may form the front side of the front and / or rear jib part.
  • the central connecting plate may be a simple thick sheet. In particular, the sheet thickness is greater than the wall thicknesses of the jib parts.
  • the front and / or rear boom part preferably provides a rectilinear structure, preferably they have a rectilinear central axis. Both jib parts are connected to one another at a definable angle to one another, so that the desired boomerang-like shape results. In mounting position the front boom part is angled downwards relative to the central axis of the rear boom part. The chosen angle can be pointed, but this is not a necessary requirement.
  • the rear boom part is used for mounting on the earthmoving machine, preferably on the upper and / or undercarriage of the earthmoving machine. Accordingly, corresponding bearings are provided for tiltable mounting on the earthmoving machine at the outer end of the rear boom part.
  • the front arm member preferably includes at its outer end bearing points for attachment of a boom extension and / or an attachment.
  • the central connecting plate is curved, which may possibly result in a curved contact edge of the jib parts along the boom side surfaces.
  • At least one upper connecting plate is provided, which forms part of the upper side of the boom in the connecting region of both cantilever parts.
  • this upper connecting plate is characterized by a curved plane, whereby by means of the connecting plate also the angle between the jib parts can be predetermined.
  • the front and / or rear boom part can be configured as a box structure, in particular a hollow box structure. At least in sections, these preferably have a corresponding box shape.
  • the production of the jib parts themselves can be done by fillet welding, whereby the side parts of the jib part are assembled to the desired box shape.
  • the cross-sectional profiles of the jib parts in the connection area are different. It is conceivable, for example, a distinction of the resulting cross-sectional areas of the front and rear boom part.
  • the cross-sectional area of the front jib part is larger in area than the cross-sectional area of the rear jib part. It is particularly preferred when the boom profile of the front boom member is wider than the profile of the rear boom member.
  • At least one bearing point is provided for receiving an actuator in the connecting region of the jib parts.
  • a bearing point for the articulation of a luffing cylinder of the earthmoving machine is provided in this area.
  • at least one bearing point is arranged on the central connecting plate, in particular welded there.
  • the welded onto the central connecting plate bearing can be configured as a bearing tube for receiving corresponding bearing pin, wherein the bearing tube extends transversely to the boom longitudinal axis by one of the jib parts.
  • the outlet openings of the bearing tube then lie on the side surfaces of the jib part.
  • one or more reinforcing plates can be arranged. It makes sense that the bearing tube extends through the rear boom part.
  • the bearing tube and / or the reinforcing plates can be realized in a cast casting. The production of this combination is also conceivable by material processing of an initial part.
  • the boom may comprise one or more bearing points for receiving an actuator, preferably a linear actuator such as a cylinder unit, for actuating a boom extension movably mounted on the front boom part and / or an attachment mounted thereon.
  • an actuator preferably a linear actuator such as a cylinder unit
  • One or more bearings are preferably arranged directly on or on the upper connecting plate.
  • the bearing can be formed in the form of at least two bearing plates, which are welded vertically standing on the upper connecting plate.
  • the bearing plates extend from the upper connecting plate to the rear jib part.
  • the end of the bearing plates is in a region of lesser stress, so that the local weld requires no additional treatment or reinforcement.
  • 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 earthmoving machine is characterized by the same advantages and characteristics as already indicated above with reference to the boom according to the invention. A repetitive description is omitted for the sake of simplicity.
  • 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 results in a curved contact edge of the jib parts 11, 12 along the side plates 11a, 11b, 12a, 12b.
  • 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 on the upper side of the boom 10, which allows a receptacle of a cylinder extending from the bearing 30 to a mounted on the bearing point 13 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 area with the largest width, a bore 31a, 31b is provided for each bolt receptacles, wherein the bore edge is reinforced with additional sheets 32.
  • the width of the bearing plates 30a, 30b increases in the direction of from the rear boom part 12 steadily.
  • 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. Due to the bending of the bearing plates 30a, 30b, the overall rigidity of the bearing can be increased without, however, having to increase the thickness of the bearing plates 30a, 30b. In addition, it is also not necessary to attach more reinforcing plates in the storage area. As a result, the total weight of the boom can be further reduced and further simplify its production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Shovels (AREA)
  • Jib Cranes (AREA)
EP18194284.8A 2017-09-15 2018-09-13 Flèche de pelle et pelle excavatrice Active EP3456888B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017121518.2A DE102017121518A1 (de) 2017-09-15 2017-09-15 Baggerausleger und Bagger

Publications (2)

Publication Number Publication Date
EP3456888A1 true EP3456888A1 (fr) 2019-03-20
EP3456888B1 EP3456888B1 (fr) 2022-06-01

Family

ID=63579200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18194284.8A Active EP3456888B1 (fr) 2017-09-15 2018-09-13 Flèche de pelle et pelle excavatrice

Country Status (5)

Country Link
US (1) US11015317B2 (fr)
EP (1) EP3456888B1 (fr)
CN (1) CN109505318B (fr)
DE (1) DE102017121518A1 (fr)
ES (1) ES2925174T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019110607A1 (de) * 2019-04-24 2020-10-29 Liebherr-France Sas Ausrüstungsbauteil
CN117738259A (zh) * 2024-02-01 2024-03-22 徐州徐工筑路机械有限公司 一种平地机前机架及平地机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019116394A1 (de) * 2019-06-17 2020-12-17 Liebherr-France Sas Baggerstiel
JP2024137143A (ja) * 2023-03-24 2024-10-07 株式会社小松製作所 作業機用ブーム、作業機械、および作業機用ブームの製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331539A (en) * 1976-09-06 1978-03-24 Hitachi Construction Machinery Method of producing hydraulicallyyoperated shovel arms
JPS554454A (en) * 1978-06-27 1980-01-12 Sumitomo Heavy Ind Ltd Method of manufacturing boom for use in hydraulic shovel
JPS5869050U (ja) * 1981-10-27 1983-05-11 セイレイ工業株式会社 バツクホ−の主ブ−ムにおける先端部補強構造
JPS59107657U (ja) * 1983-01-11 1984-07-20 株式会社神戸製鋼所 油圧シヨベル用ブ−ム
JPS616552U (ja) * 1984-06-19 1986-01-16 油谷重工株式会社 油圧シヨベル等のブ−ムの構造
JP2000248573A (ja) * 1999-03-03 2000-09-12 Shin Caterpillar Mitsubishi Ltd 作業機械の作業腕構造
JP2007262826A (ja) * 2006-03-29 2007-10-11 Kubota Corp ブーム

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331539B2 (fr) * 1973-04-25 1978-09-02
US4069637A (en) 1976-08-09 1978-01-24 Caterpillar Tractor Co. Tubular section boom
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
DE19882547B4 (de) 1997-07-15 2007-11-29 Komatsu Ltd. Ausleger eines Löffelbaggers und Herstellverfahren für diesen
JPH11158907A (ja) * 1997-12-02 1999-06-15 Kubota Corp 作業機のブーム構造
JP2000248574A (ja) * 1999-03-03 2000-09-12 Shin Caterpillar Mitsubishi Ltd 作業機械の作業腕構造
CN101652597A (zh) * 2007-02-09 2010-02-17 奥里加米工业股份有限公司 载荷承载三维结构
JP2008240343A (ja) * 2007-03-27 2008-10-09 Kubota Corp 作業機のアーム
CN201574412U (zh) * 2009-12-31 2010-09-08 斗山工程机械（中国）有限公司 一种挖掘机动臂加强结构及挖掘机
JP5592994B2 (ja) * 2011-04-20 2014-09-17 日立建機株式会社 建設機械用ブーム
US8998560B2 (en) * 2012-01-05 2015-04-07 Deere & Company Boom assembly
DE102017121516A1 (de) * 2017-09-15 2019-03-21 Liebherr-France Sas Baggerausleger und Bagger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331539A (en) * 1976-09-06 1978-03-24 Hitachi Construction Machinery Method of producing hydraulicallyyoperated shovel arms
JPS554454A (en) * 1978-06-27 1980-01-12 Sumitomo Heavy Ind Ltd Method of manufacturing boom for use in hydraulic shovel
JPS5869050U (ja) * 1981-10-27 1983-05-11 セイレイ工業株式会社 バツクホ−の主ブ−ムにおける先端部補強構造
JPS59107657U (ja) * 1983-01-11 1984-07-20 株式会社神戸製鋼所 油圧シヨベル用ブ−ム
JPS616552U (ja) * 1984-06-19 1986-01-16 油谷重工株式会社 油圧シヨベル等のブ−ムの構造
JP2000248573A (ja) * 1999-03-03 2000-09-12 Shin Caterpillar Mitsubishi Ltd 作業機械の作業腕構造
JP2007262826A (ja) * 2006-03-29 2007-10-11 Kubota Corp ブーム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019110607A1 (de) * 2019-04-24 2020-10-29 Liebherr-France Sas Ausrüstungsbauteil
CN117738259A (zh) * 2024-02-01 2024-03-22 徐州徐工筑路机械有限公司 一种平地机前机架及平地机

Also Published As

Publication number Publication date
ES2925174T3 (es) 2022-10-14
DE102017121518A1 (de) 2019-03-21
US11015317B2 (en) 2021-05-25
CN109505318A (zh) 2019-03-22
US20190085527A1 (en) 2019-03-21
EP3456888B1 (fr) 2022-06-01
CN109505318B (zh) 2022-07-29

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