EP1031531A3 - Level luffing crane - Google Patents

Level luffing crane Download PDF

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Publication number
EP1031531A3
EP1031531A3 EP99125403A EP99125403A EP1031531A3 EP 1031531 A3 EP1031531 A3 EP 1031531A3 EP 99125403 A EP99125403 A EP 99125403A EP 99125403 A EP99125403 A EP 99125403A EP 1031531 A3 EP1031531 A3 EP 1031531A3
Authority
EP
European Patent Office
Prior art keywords
luffing
crane
crane base
jib
cylinder
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.)
Withdrawn
Application number
EP99125403A
Other languages
German (de)
French (fr)
Other versions
EP1031531A2 (en
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.)
MAN Wolffkran GmbH
Original Assignee
MAN Wolffkran 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 MAN Wolffkran GmbH filed Critical MAN Wolffkran GmbH
Publication of EP1031531A2 publication Critical patent/EP1031531A2/en
Publication of EP1031531A3 publication Critical patent/EP1031531A3/en
Withdrawn legal-status Critical Current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
    • 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
    • B66C23/82—Luffing gear
    • 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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
    • 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
    • B66C23/88—Safety gear
    • B66C23/92—Snubbers or dashpots for preventing backwards swinging of jibs, e.g. in the event of cable or tackle breakage

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

Es wird ein Wippkran mit einer Kranbasis (9, 15), einem zwischen einer Flachstellung und einer Steilstellung schwenkbar an der Kranbasis (9, 15) gelagerten Wippausleger (13) und einem in einer ersten Gelenkverbindung (27) im Abstand von der Schwenkachse (11) des Wippauslegers (13) an der Kranbasis (9, 15) und in einer zweiten Gelenkverbindung (25) im Abstand von der Schwenkachse (11) am Wippausleger (13) angreifenden Wippantrieb (29) vorgeschlagen. Der Wippantrieb (29) weist wenigstens ein zwischen den beiden Gelenkverbindungen (25, 27) angreifendes Kolben-Zylinder-Hydraulikkraftgerät auf, das sowohl zugkraftsteif als auch druckkraftsteif mit der Kranbasis (9, 15) und dem Wippausleger (13) verbunden ist. Das Hydraulikkraftgerät (29) bildet mechanische Endanschläge zwischen einem Zylinder (31) und seinem in dem Zylinder verschiebbaren Kolben (33), die zugleich Wippwegbegrenzungsanschläge des Wippauslegers (13) bilden.

Figure 00000001
A luffing crane with a crane base (9, 15), a luffing jib (13) which is pivotably mounted on the crane base (9, 15) between a flat position and a steep position, and with a first articulated connection (27) at a distance from the pivot axis (11 ) of the luffing jib (13) on the crane base (9, 15) and in a second articulated connection (25) at a distance from the pivot axis (11) on the luffing jib (13) engaging luffing drive (29). The luffing drive (29) has at least one piston-cylinder hydraulic power device acting between the two articulated connections (25, 27), which is connected to the crane base (9, 15) and the luffing jib (13) in a manner that is both rigid and compressive. The hydraulic power device (29) forms mechanical end stops between a cylinder (31) and its piston (33) displaceable in the cylinder, which at the same time form luffing travel limit stops of the luffing jib (13).
Figure 00000001
EP99125403A 1999-02-26 1999-12-20 Level luffing crane Withdrawn EP1031531A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999108485 DE19908485A1 (en) 1999-02-26 1999-02-26 Luffing crane
DE19908485 1999-02-26

Publications (2)

Publication Number Publication Date
EP1031531A2 EP1031531A2 (en) 2000-08-30
EP1031531A3 true EP1031531A3 (en) 2004-06-16

Family

ID=7899047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99125403A Withdrawn EP1031531A3 (en) 1999-02-26 1999-12-20 Level luffing crane

Country Status (2)

Country Link
EP (1) EP1031531A3 (en)
DE (1) DE19908485A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005012050U1 (en) * 2005-08-01 2006-12-14 Liebherr-Werk Biberach Gmbh System for adjusting a jib of a crane
US7967158B2 (en) 2006-10-27 2011-06-28 Manitowoc Crane Companies, Llc Mobile lift crane with variable position counterweight
FR2909366B1 (en) * 2006-12-04 2009-07-24 Mobilev LIFTING EQUIPMENT
ES2374015B1 (en) * 2009-02-05 2012-10-30 Linden Comansa, S.L. CRANE TOWER CRANE.
US9278834B2 (en) 2009-08-06 2016-03-08 Manitowoc Crane Group, LLC Lift crane with moveable counterweight
DE102010008155B4 (en) * 2010-02-16 2013-02-28 Wolffkran Holding Ag Luffing jib tower crane
CN102425201A (en) * 2011-11-30 2012-04-25 北京市三一重机有限公司 Anti-back-tipping moment limiter for arm support
DE102012010759A1 (en) 2012-05-31 2013-12-05 Wolffkran Holding Ag Electrohydraulic device for adjusting a boom
DE102012010760A1 (en) * 2012-05-31 2013-12-05 Wolffkran Holding Ag Electrohydraulic device with three-phase asynchronous motor for adjusting a boom
US10179722B2 (en) 2014-01-27 2019-01-15 Manitowoc Crane Companies, Llc Lift crane with improved movable counterweight
EP3099620A4 (en) 2014-01-27 2017-10-11 Manitowoc Crane Companies, Inc. Height adjustment mechanism for an auxiliary member on a crane
CN104071710B (en) * 2014-07-01 2017-08-25 徐工集团工程机械股份有限公司 A kind of crane and its stepless variable-amplitude auxiliary arm device
CN109678070B (en) * 2019-02-22 2024-01-30 沈阳建筑大学 Movable counterweight realizing mechanism of movable arm tower crane
DE102020107417A1 (en) 2020-03-18 2021-09-23 Liebherr-Werk Biberach Gmbh Tower crane with adjustable counter ballast

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091725B (en) * 1958-06-06 1960-10-27 Gerhard Wiese Luffing crane with horizontal load path
US3149730A (en) * 1962-06-08 1964-09-22 Bucyrus Erie Co Convertible crane
DE2461773A1 (en) * 1974-12-30 1976-07-08 Grisebach Hans Theodor Adjusting mechanism with screwed spindle - has nuts driven from common source in synchromisn and with coupling links
DE3545185C1 (en) * 1985-12-20 1987-07-23 Krupp Gmbh Luffing-crane jib
EP0708053A1 (en) * 1994-08-26 1996-04-24 Hiab Export A/S Overload protection system for hydraulic boom cranes, especially of the type used on motor vehicles
GB2326629A (en) * 1997-06-26 1998-12-30 Baesema Ltd Nuclear Safety Crane with Extendible Boom and Isolation from Seismic Loading

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091725B (en) * 1958-06-06 1960-10-27 Gerhard Wiese Luffing crane with horizontal load path
US3149730A (en) * 1962-06-08 1964-09-22 Bucyrus Erie Co Convertible crane
DE2461773A1 (en) * 1974-12-30 1976-07-08 Grisebach Hans Theodor Adjusting mechanism with screwed spindle - has nuts driven from common source in synchromisn and with coupling links
DE3545185C1 (en) * 1985-12-20 1987-07-23 Krupp Gmbh Luffing-crane jib
EP0708053A1 (en) * 1994-08-26 1996-04-24 Hiab Export A/S Overload protection system for hydraulic boom cranes, especially of the type used on motor vehicles
GB2326629A (en) * 1997-06-26 1998-12-30 Baesema Ltd Nuclear Safety Crane with Extendible Boom and Isolation from Seismic Loading

Also Published As

Publication number Publication date
DE19908485A1 (en) 2000-08-31
EP1031531A2 (en) 2000-08-30

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