FR2445291A1 - Weight suspension from crane jib - uses symmetrical cable system with angles compared with reference plane on weight and automatically electrically corrected - Google Patents

Weight suspension from crane jib - uses symmetrical cable system with angles compared with reference plane on weight and automatically electrically corrected

Info

Publication number
FR2445291A1
FR2445291A1 FR7836728A FR7836728A FR2445291A1 FR 2445291 A1 FR2445291 A1 FR 2445291A1 FR 7836728 A FR7836728 A FR 7836728A FR 7836728 A FR7836728 A FR 7836728A FR 2445291 A1 FR2445291 A1 FR 2445291A1
Authority
FR
France
Prior art keywords
weight
angles
reference plane
cable system
crane jib
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.)
Pending
Application number
FR7836728A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7836728A priority Critical patent/FR2445291A1/en
Publication of FR2445291A1 publication Critical patent/FR2445291A1/en
Pending 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
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions

Landscapes

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

Abstract

The weight suspending system uses cables (29, 2b, 39, 3b) fixed to various parts of the weight (13). The cable pattern has a symmetrical vertical axis. The angles between at least two cables can be compared with a plan on the weight. The angles are normally equal in the usual weight position. There is an automatic control acting on an angle difference signal to keep the angles correct. The control exerts electrically a differential pull on the cables of one pair. The jib (1) carries a symmetrical set of pulleys (4a, 4b, 5a, 5b).
FR7836728A 1978-12-28 1978-12-28 Weight suspension from crane jib - uses symmetrical cable system with angles compared with reference plane on weight and automatically electrically corrected Pending FR2445291A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7836728A FR2445291A1 (en) 1978-12-28 1978-12-28 Weight suspension from crane jib - uses symmetrical cable system with angles compared with reference plane on weight and automatically electrically corrected

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7836728A FR2445291A1 (en) 1978-12-28 1978-12-28 Weight suspension from crane jib - uses symmetrical cable system with angles compared with reference plane on weight and automatically electrically corrected

Publications (1)

Publication Number Publication Date
FR2445291A1 true FR2445291A1 (en) 1980-07-25

Family

ID=9216684

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7836728A Pending FR2445291A1 (en) 1978-12-28 1978-12-28 Weight suspension from crane jib - uses symmetrical cable system with angles compared with reference plane on weight and automatically electrically corrected

Country Status (1)

Country Link
FR (1) FR2445291A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1992583A3 (en) * 2007-05-16 2012-07-18 Liebherr-Werk Nenzing GmbH Crane control, crane and method
EP2502871A1 (en) * 2007-05-16 2012-09-26 Liebherr-Werk Nenzing GmbH Crane control, crane and method
US10526054B2 (en) 2017-10-26 2020-01-07 Miller Industries Towing Equipment, Inc. Pipe-laying vehicle with rotator platform leveling system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1992583A3 (en) * 2007-05-16 2012-07-18 Liebherr-Werk Nenzing GmbH Crane control, crane and method
EP2502871A1 (en) * 2007-05-16 2012-09-26 Liebherr-Werk Nenzing GmbH Crane control, crane and method
US10526054B2 (en) 2017-10-26 2020-01-07 Miller Industries Towing Equipment, Inc. Pipe-laying vehicle with rotator platform leveling system

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