EP0957209A3 - Hydraulic piston-cylinder-unit for a pivot drive - Google Patents

Hydraulic piston-cylinder-unit for a pivot drive Download PDF

Info

Publication number
EP0957209A3
EP0957209A3 EP99107892A EP99107892A EP0957209A3 EP 0957209 A3 EP0957209 A3 EP 0957209A3 EP 99107892 A EP99107892 A EP 99107892A EP 99107892 A EP99107892 A EP 99107892A EP 0957209 A3 EP0957209 A3 EP 0957209A3
Authority
EP
European Patent Office
Prior art keywords
cylinder
unit
hydraulic piston
piston
pivot drive
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
EP99107892A
Other languages
German (de)
French (fr)
Other versions
EP0957209A2 (en
EP0957209B1 (en
Inventor
Rolf Mieger
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE29813241U external-priority patent/DE29813241U1/en
Application filed by Individual filed Critical Individual
Publication of EP0957209A2 publication Critical patent/EP0957209A2/en
Publication of EP0957209A3 publication Critical patent/EP0957209A3/en
Application granted granted Critical
Publication of EP0957209B1 publication Critical patent/EP0957209B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets

Abstract

The cylinder has attachment means whereby it can be connected to the working tool or a support component of the swivel drive. The attachment of the piston is effected by a lug (22) which protrudes from the cylinder (30) and upon which can pivot a connecting rod. The lug is screwed or welded to the piston. The cylinder is constructed as a double cylinder unit, and the pressurised chambers on each side of the piston have different diameters.
EP99107892A 1998-05-12 1999-04-21 Hydraulic piston-cylinder-unit for a pivot drive Expired - Lifetime EP0957209B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29808647 1998-05-12
DE29808647U 1998-05-12
DE29813241U DE29813241U1 (en) 1998-05-12 1998-07-24 Hydraulic piston-cylinder unit for a swivel drive
DE29813241U 1998-07-24

Publications (3)

Publication Number Publication Date
EP0957209A2 EP0957209A2 (en) 1999-11-17
EP0957209A3 true EP0957209A3 (en) 2001-03-14
EP0957209B1 EP0957209B1 (en) 2007-02-14

Family

ID=26061518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107892A Expired - Lifetime EP0957209B1 (en) 1998-05-12 1999-04-21 Hydraulic piston-cylinder-unit for a pivot drive

Country Status (4)

Country Link
US (1) US6260470B1 (en)
EP (1) EP0957209B1 (en)
AT (1) ATE353999T1 (en)
DE (1) DE59914187D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10309304B4 (en) * 2003-03-04 2005-03-31 Festo Ag & Co. Pneumatically operated slotted cylinder
FR2929968B1 (en) * 2008-04-14 2011-09-30 Const Du Beaujolais Atel DEVICE FOR TILTING A TOOL AND IN PARTICULAR A BUCKET OF A PUBLIC WORKS MACHINE
DE202011002981U1 (en) 2011-02-21 2012-05-22 Rolf Mieger Gripping tool with hydraulic piston-cylinder units
CN105887952B (en) * 2016-01-29 2018-06-22 黄社兰 Front frame for loader lug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468472A (en) * 1965-02-18 1967-02-03 Orenstein & Koppel Ag Leveling device for excavator buckets
US3503144A (en) * 1967-03-16 1970-03-31 Omsteel Ind Inc Convertible loading and plowing device
EP0033966A2 (en) * 1980-02-11 1981-08-19 bsg Handels-GmbH für Baumaschinen-Verschleissteile Excavating bucket
FR2499123A1 (en) * 1981-02-05 1982-08-06 Liebherr Hydraulikbagger PIVOTING PITCHING PIT
FR2537624A1 (en) * 1982-12-09 1984-06-15 Liebherr Hydraulikbagger Hydraulically slewing excavator trenching shovel
EP0577430A1 (en) * 1992-07-02 1994-01-05 Eagle-Picher Industries, Inc. Method and apparatus for digging trenches

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1604548A (en) * 1923-12-15 1926-10-26 Nat Pneumatic Co Door engine
FR2487880A1 (en) * 1981-01-21 1982-02-05 Poclain Sa Grab bucket with inter-articulating jaws - is driven by jack actuating pair of levers with sliding pivots in jaws
DE9407859U1 (en) * 1994-05-11 1994-09-01 Mieger Rolf Hydraulically swiveling trench clearing bucket
DE29621253U1 (en) * 1996-12-06 1997-05-22 Mieger Rolf Ing Grad Swivel adapter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468472A (en) * 1965-02-18 1967-02-03 Orenstein & Koppel Ag Leveling device for excavator buckets
US3503144A (en) * 1967-03-16 1970-03-31 Omsteel Ind Inc Convertible loading and plowing device
EP0033966A2 (en) * 1980-02-11 1981-08-19 bsg Handels-GmbH für Baumaschinen-Verschleissteile Excavating bucket
FR2499123A1 (en) * 1981-02-05 1982-08-06 Liebherr Hydraulikbagger PIVOTING PITCHING PIT
FR2537624A1 (en) * 1982-12-09 1984-06-15 Liebherr Hydraulikbagger Hydraulically slewing excavator trenching shovel
EP0577430A1 (en) * 1992-07-02 1994-01-05 Eagle-Picher Industries, Inc. Method and apparatus for digging trenches

Also Published As

Publication number Publication date
EP0957209A2 (en) 1999-11-17
EP0957209B1 (en) 2007-02-14
ATE353999T1 (en) 2007-03-15
DE59914187D1 (en) 2007-03-29
US6260470B1 (en) 2001-07-17

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