EP1574473A1 - Outil de préhension - Google Patents

Outil de préhension Download PDF

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Publication number
EP1574473A1
EP1574473A1 EP04030355A EP04030355A EP1574473A1 EP 1574473 A1 EP1574473 A1 EP 1574473A1 EP 04030355 A EP04030355 A EP 04030355A EP 04030355 A EP04030355 A EP 04030355A EP 1574473 A1 EP1574473 A1 EP 1574473A1
Authority
EP
European Patent Office
Prior art keywords
wear
gripping tool
gripper
shell
tool according
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
EP04030355A
Other languages
German (de)
English (en)
Other versions
EP1574473B1 (fr
Inventor
Asam Dirk
Wager Bernd
Mieger Holf
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 Hydraulikbagger GmbH
Original Assignee
Liebherr Hydraulikbagger GmbH
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 Hydraulikbagger GmbH filed Critical Liebherr Hydraulikbagger GmbH
Publication of EP1574473A1 publication Critical patent/EP1574473A1/fr
Application granted granted Critical
Publication of EP1574473B1 publication Critical patent/EP1574473B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/04—Tine grabs
    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
    • 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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • 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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • 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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2858—Teeth characterised by shape
    • 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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2883—Wear elements for buckets or implements in general

Definitions

  • the invention relates to a gripping tool, preferably a multi-shell gripper, with at least one prong.
  • Clamshell grabs for material handling serve in particular for loading of bulk materials, fine and coarse scrap, demolition material or for loading of VA steels. These materials are abrasive materials that often have a much higher hardness than the receiving tool or the gripper. As a result, a considerable material removal occurs after a relatively short time the gripper shells on. For constructive reasons, especially because of the required Toughness, the claw shells are made of a not so tough Material produced, so that the total amount of wear is very high.
  • the hook shells are currently regenerated by so-called armoring with an electrode. This surfacing is very time consuming and it is to this regeneration of the claw shells necessary to remove the entire grapple shell.
  • the object of the invention is to extend the durability of the gripping tools and to simplify the possibly necessary regeneration of the gripping tools and thus lowering the regeneration costs.
  • a gripping tool preferably a multi-shell gripper, created, the at least one claw shell with at least one Having tines, wherein at least one gripper cup at least one wear element is arranged such that the main wear areas through the at least one wear element are covered.
  • the at least a wear element made of wear-resistant material.
  • This wear-resistant On the one hand, material can be a highly wear-resistant material, which as such is not weldable, or even a highly tempered material, that is just weldable.
  • the at least one wear element can advantageously via bolts and / or Screw with the gripper shell be releasably connected again. This is a particularly easy replacement of the wear element possible.
  • the wear element via an adhesive connection with the hook shell be connected.
  • a highly wear-resistant material which is not weldable as such, be connected to the gripper shell. This is of course also for the aforementioned case of the bolt and / or screw connection possible.
  • the wear element and high-tempered Material exist, which is very resistant, but still weldable is.
  • This wear element can be tack welded to the hook shell be connected.
  • the wear element be made as a cast or forged part.
  • the wear elements can each be designed as circular segments be, with the advantage that, depending on the wear, the individual circle segments then can be replaced individually.
  • Fig. 1 is a single gripper shell 10 of a gripping tool according to the invention, consisting of a tine, shown.
  • the gripper cup 10 is, as in the Fig. 1, executed curved.
  • the gripper shell 10 has bearings in the usual way 12 and 14 on.
  • the gripper shells 10 are made of a tough but not made of very resistant material.
  • the wear elements 16, 18 and 20 executed as castings, all three parts in the form of circle segments are designed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Crushing And Grinding (AREA)
  • Gripping On Spindles (AREA)
  • Fishing Rods (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
EP04030355A 2004-03-12 2004-12-21 Outil de préhension Expired - Lifetime EP1574473B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004003910U DE202004003910U1 (de) 2004-03-12 2004-03-12 Greifwerkzeug
DE202004003910U 2004-03-12

Publications (2)

Publication Number Publication Date
EP1574473A1 true EP1574473A1 (fr) 2005-09-14
EP1574473B1 EP1574473B1 (fr) 2008-05-14

Family

ID=34802090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04030355A Expired - Lifetime EP1574473B1 (fr) 2004-03-12 2004-12-21 Outil de préhension

Country Status (5)

Country Link
US (1) US7344175B2 (fr)
EP (1) EP1574473B1 (fr)
AT (1) ATE395296T1 (fr)
DE (2) DE202004003910U1 (fr)
ES (1) ES2304577T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006059894A1 (de) 2006-12-19 2008-06-26 Terex Gmbh Verschleißelement sowie damit ausgerüstetes Bauteil
USD610592S1 (en) * 2008-10-24 2010-02-23 Miller International Limited Excavator bucket
CN102167233B (zh) * 2011-03-21 2013-12-18 何嘉诚 一种抓具的液压旋转装置
USD702738S1 (en) 2011-07-01 2014-04-15 Timothy M. Molnar Attachment for equipment bucket
US9138829B2 (en) 2013-09-03 2015-09-22 Robert David Reid Pipe welding fixture
US20160153178A1 (en) * 2016-02-04 2016-06-02 Caterpillar Inc. Ground engaging tool with replaceable wear resistant cover
US10150651B2 (en) 2017-01-18 2018-12-11 Cranemasters, Inc. Tank car lifting apparatus
USD967592S1 (en) * 2020-09-14 2022-10-18 Cranemasters, Inc. Lifting arm
USD968745S1 (en) * 2020-09-14 2022-11-01 Cranemasters, Inc. Lifting arm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1756642A1 (de) * 1968-06-20 1970-05-06 Demag Zug Gmbh Greifer in Verbundkonstruktion
US4907356A (en) * 1989-01-23 1990-03-13 Labounty Kenneth R Slipper bucket for grapple
DE3841940C1 (en) * 1988-12-13 1990-05-23 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf, De Crescent-shaped basic body of a blade of a multi-bladed grab
DE9102928U1 (de) * 1990-11-30 1991-05-29 Böhler Ladetechnik Vertriebs- u. Entwicklungsgesellschaft m.b.H., Kapfenberg Greifereinrichtung für Ladeschaufeln

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8815474U1 (de) * 1988-12-13 1989-05-03 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf Sichelförmiger Grundkörper einer Schale eines Mehrschalengreifers
US6000108A (en) * 1999-01-22 1999-12-14 Roan; Jing-Wen Towing hook structure
CA2358339C (fr) * 2001-10-05 2010-06-15 Peninsula Alloy Inc. Plaque d'usure
DE10350540A1 (de) * 2003-10-29 2005-06-09 Liebherr-Hydraulikbagger Gmbh Grab- bzw.Greifwerkzeug

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1756642A1 (de) * 1968-06-20 1970-05-06 Demag Zug Gmbh Greifer in Verbundkonstruktion
DE3841940C1 (en) * 1988-12-13 1990-05-23 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf, De Crescent-shaped basic body of a blade of a multi-bladed grab
US4907356A (en) * 1989-01-23 1990-03-13 Labounty Kenneth R Slipper bucket for grapple
DE9102928U1 (de) * 1990-11-30 1991-05-29 Böhler Ladetechnik Vertriebs- u. Entwicklungsgesellschaft m.b.H., Kapfenberg Greifereinrichtung für Ladeschaufeln

Also Published As

Publication number Publication date
ES2304577T3 (es) 2008-10-16
ATE395296T1 (de) 2008-05-15
DE202004003910U1 (de) 2005-07-21
EP1574473B1 (fr) 2008-05-14
US20050200146A1 (en) 2005-09-15
US7344175B2 (en) 2008-03-18
DE502004007128D1 (de) 2008-06-26

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