DE59509048D1 - Slewing gear for a crane - Google Patents

Slewing gear for a crane

Info

Publication number
DE59509048D1
DE59509048D1 DE59509048T DE59509048T DE59509048D1 DE 59509048 D1 DE59509048 D1 DE 59509048D1 DE 59509048 T DE59509048 T DE 59509048T DE 59509048 T DE59509048 T DE 59509048T DE 59509048 D1 DE59509048 D1 DE 59509048D1
Authority
DE
Germany
Prior art keywords
crane
torque
jib
slewing gear
load
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.)
Expired - Lifetime
Application number
DE59509048T
Other languages
German (de)
Inventor
Hartmut Ketteler
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 Werk Biberach GmbH
Original Assignee
Liebherr Werk Biberach 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 Werk Biberach GmbH filed Critical Liebherr Werk Biberach GmbH
Application granted granted Critical
Publication of DE59509048D1 publication Critical patent/DE59509048D1/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
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
    • B66C13/063—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/22—Control systems or devices for electric drives
    • B66C13/30—Circuits for braking, traversing, or slewing motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)

Abstract

The rotating parts of the crane are driven by gearing from an electric motor controlled by an actuator in response to measurements of its rotational speed and torque. When the load suspended from the jib is swinging forwards during run-up of the motor and rotation of the jib, the driving torque is reduced as the speed increases. When the load is swinging backwards the torque is maintained at a substantially constant value. <IMAGE>
DE59509048T 1994-06-06 1995-05-24 Slewing gear for a crane Expired - Lifetime DE59509048D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4419791 1994-06-06

Publications (1)

Publication Number Publication Date
DE59509048D1 true DE59509048D1 (en) 2001-04-05

Family

ID=6519939

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59509048T Expired - Lifetime DE59509048D1 (en) 1994-06-06 1995-05-24 Slewing gear for a crane

Country Status (5)

Country Link
EP (1) EP0691301B1 (en)
AT (1) ATE199364T1 (en)
DE (1) DE59509048D1 (en)
DK (1) DK0691301T3 (en)
ES (1) ES2154695T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510167C2 (en) * 1995-03-21 1997-04-10 Stahl R Foerdertech Gmbh Suspension with swing damping
FR2931466B1 (en) * 2008-05-22 2011-01-07 Manitowoc Crane Group France METHOD FOR CONTROLLING THE ORIENTATION MOVEMENT OF THE ROTATING PART OF A TOWER CRANE
DE102012015306A1 (en) 2012-07-31 2014-02-06 Control Techniques Ltd. Method for controlling the slewing gear of a slewing crane
DE102018200573A1 (en) 2018-01-15 2019-07-18 Zf Friedrichshafen Ag Part-turn actuator with condition monitoring

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003025B1 (en) * 1977-12-08 1984-04-18 Siemens Aktiengesellschaft Rotational gear or lifting gear drive control arrangement for a crane
EP0003577B1 (en) * 1978-02-15 1982-02-03 Siemens Aktiengesellschaft Speed control for the slewing and/or lifting gear of a crane
IT7969042A0 (en) * 1979-10-19 1979-10-19 Alfa Costr Metal Spa DEVICE FOR THE ROTATIONAL CONTROL AND SPEED CONTROL OF A MOBILE ORGAN, PARTICULARLY THE SWIVEL ARM OF A TOWER CRANE
FR2520133A1 (en) * 1982-01-19 1983-07-22 Potain Sa EQUIPMENT FOR REDUCING DYNAMIC EFFECTS IN THE ROTATION CONTROL OF A HORIZONTAL ELEMENT OF GREAT INERTIA
DE4025749A1 (en) * 1990-08-14 1992-02-20 Siemens Ag Automatic operation of revolving crane without load swings - involves controlled timing of grab acceleration and retardation adjusted to period of natural frequency of oscillation
DE4221915A1 (en) * 1992-07-03 1994-01-05 Arcomet N V Tower crane with self assembly design - has rotating base of tower with boom on height adjustable platform hauled up tower and secured

Also Published As

Publication number Publication date
ES2154695T3 (en) 2001-04-16
EP0691301A1 (en) 1996-01-10
EP0691301B1 (en) 2001-02-28
DK0691301T3 (en) 2001-03-26
ATE199364T1 (en) 2001-03-15

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