IT7969042A0 - DEVICE FOR THE ROTATIONAL CONTROL AND SPEED CONTROL OF A MOBILE ORGAN, PARTICULARLY THE SWIVEL ARM OF A TOWER CRANE - Google Patents

DEVICE FOR THE ROTATIONAL CONTROL AND SPEED CONTROL OF A MOBILE ORGAN, PARTICULARLY THE SWIVEL ARM OF A TOWER CRANE

Info

Publication number
IT7969042A0
IT7969042A0 IT7969042A IT6904279A IT7969042A0 IT 7969042 A0 IT7969042 A0 IT 7969042A0 IT 7969042 A IT7969042 A IT 7969042A IT 6904279 A IT6904279 A IT 6904279A IT 7969042 A0 IT7969042 A0 IT 7969042A0
Authority
IT
Italy
Prior art keywords
tower crane
control
swivel arm
speed control
mobile organ
Prior art date
Application number
IT7969042A
Other languages
Italian (it)
Inventor
Ferruccio Belli
Ferruccio Tiraferri
Original Assignee
Alfa Costr Metal Spa
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 Alfa Costr Metal Spa filed Critical Alfa Costr Metal Spa
Priority to IT7969042A priority Critical patent/IT7969042A0/en
Publication of IT7969042A0 publication Critical patent/IT7969042A0/en
Priority to DE19803031407 priority patent/DE3031407A1/en

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
    • B66C13/18—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)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Stopping Of Electric Motors (AREA)
IT7969042A 1979-10-19 1979-10-19 DEVICE FOR THE ROTATIONAL CONTROL AND SPEED CONTROL OF A MOBILE ORGAN, PARTICULARLY THE SWIVEL ARM OF A TOWER CRANE IT7969042A0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT7969042A IT7969042A0 (en) 1979-10-19 1979-10-19 DEVICE FOR THE ROTATIONAL CONTROL AND SPEED CONTROL OF A MOBILE ORGAN, PARTICULARLY THE SWIVEL ARM OF A TOWER CRANE
DE19803031407 DE3031407A1 (en) 1979-10-19 1980-08-20 Gradual continuous tower crane jib rotation control - using motor shaft brake with coil signal derived from potentiometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7969042A IT7969042A0 (en) 1979-10-19 1979-10-19 DEVICE FOR THE ROTATIONAL CONTROL AND SPEED CONTROL OF A MOBILE ORGAN, PARTICULARLY THE SWIVEL ARM OF A TOWER CRANE

Publications (1)

Publication Number Publication Date
IT7969042A0 true IT7969042A0 (en) 1979-10-19

Family

ID=11311222

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7969042A IT7969042A0 (en) 1979-10-19 1979-10-19 DEVICE FOR THE ROTATIONAL CONTROL AND SPEED CONTROL OF A MOBILE ORGAN, PARTICULARLY THE SWIVEL ARM OF A TOWER CRANE

Country Status (2)

Country Link
DE (1) DE3031407A1 (en)
IT (1) IT7969042A0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59509048D1 (en) * 1994-06-06 2001-04-05 Liebherr Werk Biberach Gmbh Slewing gear for a crane
DE19512253B4 (en) * 1995-03-31 2006-05-11 Christoph Fischer Rotary drive for a slewing boom

Also Published As

Publication number Publication date
DE3031407A1 (en) 1981-04-30

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