ATE109113T1 - TELESCOPIC SYSTEM WITH REDUCED AXIAL LENGTH OF THE TELESCOPIC CYLINDER. - Google Patents

TELESCOPIC SYSTEM WITH REDUCED AXIAL LENGTH OF THE TELESCOPIC CYLINDER.

Info

Publication number
ATE109113T1
ATE109113T1 AT91106245T AT91106245T ATE109113T1 AT E109113 T1 ATE109113 T1 AT E109113T1 AT 91106245 T AT91106245 T AT 91106245T AT 91106245 T AT91106245 T AT 91106245T AT E109113 T1 ATE109113 T1 AT E109113T1
Authority
AT
Austria
Prior art keywords
piston
telescopic
cylinder
cylinder unit
linked
Prior art date
Application number
AT91106245T
Other languages
German (de)
Inventor
Frank Deimann
Original Assignee
Liebherr Werk Ehingen
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6857607&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE109113(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Liebherr Werk Ehingen filed Critical Liebherr Werk Ehingen
Application granted granted Critical
Publication of ATE109113T1 publication Critical patent/ATE109113T1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Actuator (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

After locking bolt connections are released, the individual telescoping sections of a telescopic jib of a crane are extended and retracted with only one single-stage hydraulic piston-cylinder unit and are bolted in the respectively extended or retracted position. One end of the piston-cylinder unit is linked to the jib link piece terminating the inner end of the outer section, and the part of the piston-cylinder unit which is movable relative to the linked part is provided with a hydraulically operable driving device which can be coupled to receptacles of the telescoping sections. So that the telescopic cylinder is stressed with only a smaller buckling length, the piston rod (12) of the piston-cylinder unit (7) is linked to the jib link piece (8). The driving device (19) is arranged in the end area of the cylinder (18) from which the piston rod (12) emerges. <IMAGE>
AT91106245T 1990-09-18 1991-04-18 TELESCOPIC SYSTEM WITH REDUCED AXIAL LENGTH OF THE TELESCOPIC CYLINDER. ATE109113T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9013210U DE9013210U1 (en) 1990-09-18 1990-09-18 Telescoping system with reduced bending length of the telescoping cylinder

Publications (1)

Publication Number Publication Date
ATE109113T1 true ATE109113T1 (en) 1994-08-15

Family

ID=6857607

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91106245T ATE109113T1 (en) 1990-09-18 1991-04-18 TELESCOPIC SYSTEM WITH REDUCED AXIAL LENGTH OF THE TELESCOPIC CYLINDER.

Country Status (3)

Country Link
EP (1) EP0476225B1 (en)
AT (1) ATE109113T1 (en)
DE (2) DE9013210U1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE123743T1 (en) * 1991-02-11 1995-06-15 Liebherr Werk Ehingen TELESCOPIC BOOM FOR VEHICLE CRANES OR THE LIKE.
DE9210902U1 (en) * 1992-08-14 1992-12-24 Liebherr-Werk Ehingen Gmbh, 7930 Ehingen Telescopic boom for mobile cranes or similar
DE4344795A1 (en) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Mobile crane with a telescopic boom
AT403041B (en) * 1994-02-25 1997-10-27 Zimmermann Horst TELESCOPIC STICK
EP0754646B1 (en) * 1995-07-17 2000-05-10 Montanhydraulik GmbH Telescoping system
DE19811813B4 (en) * 1998-03-18 2005-11-24 Grove U.S. LLC (n.d.Ges.d.Staates Delaware) Lateral boom interlock
DE19926131B4 (en) * 1999-06-09 2007-04-19 Faun Gmbh Telescopic Booms
FR2797862B1 (en) * 1999-09-01 2001-11-16 Ppm METHOD OF TELESCOPING A CRANE BOOM, DEVICE FOR ITS IMPLEMENTATION AND CRANE BOOM BY APPLYING
DE10022373B4 (en) 2000-05-08 2005-11-24 Grove U.S. Llc Locking and operating unit for side arm lock
US6601719B2 (en) 2001-09-21 2003-08-05 Link-Belt Construction Equipment Co., L.P., Lllp Locking and latching system for a telescoping boom
DE102007052954B3 (en) 2007-10-31 2009-07-09 Terex Demag Gmbh Crane with telescopic boom
DE102009006292B4 (en) 2009-01-27 2015-03-26 Manitowoc Crane Group France Sas Locking system for telescopic crane jib with sliding locking unit
AT12942U1 (en) 2011-11-08 2013-02-15 Palfinger Ag CRANE, ESPECIALLY LOADING CRANE FOR A VEHICLE
CN103171983A (en) * 2013-03-27 2013-06-26 长治清华机械厂 Three-stage synchronization telescoping mechanism of suspension arm of crane
CN103527558B (en) * 2013-10-09 2016-08-31 三一汽车制造有限公司 A kind of telescopic oil cylinder support means and engineering machinery
CN103613007B (en) * 2013-12-18 2015-07-08 三一汽车起重机械有限公司 Inserted pin structure of crane boom, crane boom and crane
JP6467959B2 (en) * 2015-02-04 2019-02-13 株式会社タダノ Telescopic boom telescopic device
CN108698806B (en) * 2016-03-03 2020-01-21 株式会社多田野 Telescopic mechanism
CN110902582B (en) * 2019-12-04 2021-07-09 太原重工股份有限公司 Telescopic boom and crane comprising same
EP4357292A1 (en) 2022-10-21 2024-04-24 Oleodinamica Panni S.R.L. A blocking unit for telescopic systems, a hydraulic cylinder and a telescopic system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274291B (en) * 1967-02-17 1968-08-01 Krupp Gmbh Multi-stage telescopic boom
DE2926292A1 (en) * 1979-06-29 1981-01-08 Harnischfeger Gmbh PARTICULARLY MOBILE TELESCOPIC BOOM CRANE
US4327533A (en) * 1980-08-13 1982-05-04 Kidde, Inc. Crane boom extending, retracting and cooperative latching arrangement
US4433515A (en) * 1981-11-04 1984-02-28 Kidde, Inc. Remotely operable latch and locking pin for a multi-section boom including a manual fly section
US4688690A (en) * 1986-03-07 1987-08-25 Harnischfeger Corporation Method and apparatus for extending fly section of crane boom

Also Published As

Publication number Publication date
DE59102333D1 (en) 1994-09-01
DE9013210U1 (en) 1991-01-03
EP0476225A2 (en) 1992-03-25
EP0476225A3 (en) 1992-10-28
EP0476225B1 (en) 1994-07-27

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee