SE9200878L - HYDRAULIC CRANE WITH INCREASED MAXIMUM LIFTING POWER IN THE HIGHLIGHTS AREA AND MAKE ASTADCOMING THIS - Google Patents

HYDRAULIC CRANE WITH INCREASED MAXIMUM LIFTING POWER IN THE HIGHLIGHTS AREA AND MAKE ASTADCOMING THIS

Info

Publication number
SE9200878L
SE9200878L SE9200878A SE9200878A SE9200878L SE 9200878 L SE9200878 L SE 9200878L SE 9200878 A SE9200878 A SE 9200878A SE 9200878 A SE9200878 A SE 9200878A SE 9200878 L SE9200878 L SE 9200878L
Authority
SE
Sweden
Prior art keywords
crane
load
lifting power
boom section
maximum lifting
Prior art date
Application number
SE9200878A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9200878D0 (en
SE469425B (en
Inventor
L Andersson
Original Assignee
Hiab Ab
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 Hiab Ab filed Critical Hiab Ab
Priority to SE9200878A priority Critical patent/SE469425B/en
Publication of SE9200878D0 publication Critical patent/SE9200878D0/en
Priority to ES93908203T priority patent/ES2141152T3/en
Priority to PCT/SE1993/000162 priority patent/WO1993019000A1/en
Priority to AT93908203T priority patent/ATE187951T1/en
Priority to DE69327393T priority patent/DE69327393T2/en
Priority to EP93908203A priority patent/EP0632789B1/en
Publication of SE9200878L publication Critical patent/SE9200878L/en
Publication of SE469425B publication Critical patent/SE469425B/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
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

A hydraulic crane with increased maximum lifting power in the high-position range, i.e. when the first boom section of the crane is located above the horizontal plane, comprises a position-detecting means (8) for detecting the position of the first boom section (2), and a load-sensing means (25) for sensing the load on the crane. Further, the crane has a relief valve (21) which is arranged on the lifting side of a piston and cylinder unit (5) for operating the first boom section (2) and which opens when the load on the crane exceeds a predetermined value. When the position-detecting means (8) detects that the crane is located within the high-position range and the load on the crane sensed by the load-sensing means (25) exceeds a predetermined value, the function of the relief valve is disconnected, e.g. by means of a valve (24). This makes it possible to guarantee the load carrying performance in the high-position range and permit an increased load resulting in an increased maximum lifting power. To avoid overload of the crane when the relief valve is disconnected, the maximum permissible speed for operating the first boom section is reduced, so that the dynamic forces become insignificant.
SE9200878A 1992-03-23 1992-03-23 HYDRAULIC CRANE WITH INCREASED MAXIMUM LIFTING POWER IN THE HIGHLIGHTS AREA AND MAKE ASTADCOMING THIS SE469425B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9200878A SE469425B (en) 1992-03-23 1992-03-23 HYDRAULIC CRANE WITH INCREASED MAXIMUM LIFTING POWER IN THE HIGHLIGHTS AREA AND MAKE ASTADCOMING THIS
ES93908203T ES2141152T3 (en) 1992-03-23 1993-02-26 HYDRAULIC CRANE WITH MAXIMUM ELEVATION POWER INCREASED IN THE RANGE OF HIGH POSITIONS, AND ASSOCIATED METHOD.
PCT/SE1993/000162 WO1993019000A1 (en) 1992-03-23 1993-02-26 Hydraulic crane with increased maximum lifting power in the high-position area, and method therefor
AT93908203T ATE187951T1 (en) 1992-03-23 1993-02-26 HYDRAULIC CRANE WITH INCREASED MAXIMUM LOAD CAPACITY AT HIGH LEVELS AND CORRESPONDING METHOD
DE69327393T DE69327393T2 (en) 1992-03-23 1993-02-26 HYDRAULIC CRANE WITH INCREASED MAXIMUM LOADABILITY IN THE AREA OF HIGH ALTITUDE AND THE CORRESPONDING METHOD
EP93908203A EP0632789B1 (en) 1992-03-23 1993-02-26 Hydraulic crane with increased maximum lifting power in the high-position area, and method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9200878A SE469425B (en) 1992-03-23 1992-03-23 HYDRAULIC CRANE WITH INCREASED MAXIMUM LIFTING POWER IN THE HIGHLIGHTS AREA AND MAKE ASTADCOMING THIS

Publications (3)

Publication Number Publication Date
SE9200878D0 SE9200878D0 (en) 1992-03-23
SE9200878L true SE9200878L (en) 1993-07-05
SE469425B SE469425B (en) 1993-07-05

Family

ID=20385696

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9200878A SE469425B (en) 1992-03-23 1992-03-23 HYDRAULIC CRANE WITH INCREASED MAXIMUM LIFTING POWER IN THE HIGHLIGHTS AREA AND MAKE ASTADCOMING THIS

Country Status (6)

Country Link
EP (1) EP0632789B1 (en)
AT (1) ATE187951T1 (en)
DE (1) DE69327393T2 (en)
ES (1) ES2141152T3 (en)
SE (1) SE469425B (en)
WO (1) WO1993019000A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE520536C2 (en) * 2000-04-28 2003-07-22 Hiab Ab Hydraulic crane and method for controlling the maximum permissible lifting power of a hydraulic crane
SE530761C2 (en) * 2005-12-14 2008-09-09 Cargotec Patenter Ab Hydraulic crane with registration of lifting and / or reduction of load, procedure for such registration and method for calculating the fatigue load of a hydraulic crane
FI118469B (en) 2006-03-31 2007-11-30 Loglift Jonsered Oy Ab Method and apparatus for controlling a hoist actuator
DE102012010760A1 (en) 2012-05-31 2013-12-05 Wolffkran Holding Ag Electrohydraulic device with three-phase asynchronous motor for adjusting a boom

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2036518B2 (en) * 1970-07-23 1974-06-27 Pietzsch, Ludwig, Dr.-Ing., 7500 Karlsruhe Overload protection for jib cranes
AT309735B (en) * 1971-07-22 1973-08-27 Palfinger Hydraulik Kg Installation on loading cranes
FR2633268B3 (en) * 1988-06-27 1991-05-31 Roux Ind Sa TORQUE OR MOMENT LIMITING SYSTEM FOR LIFTING MACHINES

Also Published As

Publication number Publication date
ATE187951T1 (en) 2000-01-15
DE69327393T2 (en) 2000-05-18
WO1993019000A1 (en) 1993-09-30
ES2141152T3 (en) 2000-03-16
EP0632789A1 (en) 1995-01-11
SE9200878D0 (en) 1992-03-23
SE469425B (en) 1993-07-05
DE69327393D1 (en) 2000-01-27
EP0632789B1 (en) 1999-12-22

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