FR2399970A1 - BALANCING DEVICE FOR MOBILE ARROWS OF CRANES - Google Patents

BALANCING DEVICE FOR MOBILE ARROWS OF CRANES

Info

Publication number
FR2399970A1
FR2399970A1 FR7823470A FR7823470A FR2399970A1 FR 2399970 A1 FR2399970 A1 FR 2399970A1 FR 7823470 A FR7823470 A FR 7823470A FR 7823470 A FR7823470 A FR 7823470A FR 2399970 A1 FR2399970 A1 FR 2399970A1
Authority
FR
France
Prior art keywords
connection point
mobile
rod
cranes
arrows
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Withdrawn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
FR7823470A
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.)
Linden Alimak AB
Original Assignee
Linden Alimak 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 Linden Alimak AB filed Critical Linden Alimak AB
Publication of FR2399970A1 publication Critical patent/FR2399970A1/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Withdrawn legal-status Critical Current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
    • B66C23/88—Safety gear
    • B66C23/92—Snubbers or dashpots for preventing backwards swinging of jibs, e.g. in the event of cable or tackle breakage

Abstract

L'invention concerne un dispositif pour équilibrer une flèche mobile d'une grue ou d'une structure similaire, sur laquelle est articulée la flèche, caractérisé en ce qu'il comprend un bras articulé composé de trois tiges 6, 7 et 9 dont les extrémités adjacentes sont réunies dans un point de raccordement 10, auquel point sont reliées au moins les première et seconde tiges 6, 7 de manière rigide, permettant des mouvements rotatifs, en ce que l'extrémité opposée au point de raccordement 10 de la première tige 6 est reliée à une extrémité du bras d'équilibrage 4, l'extrémité opposée au point de raccordement de la seconde tige 7 est reliée à la tour de la grue, et l'extrémité opposée au point de raccordement 10 de la troisième tige 9, est reliée à la flèche 3.The invention relates to a device for balancing a mobile jib of a crane or of a similar structure, on which the jib is articulated, characterized in that it comprises an articulated arm composed of three rods 6, 7 and 9, adjacent ends are joined together in a connection point 10, at which point at least the first and second rods 6, 7 are connected in a rigid manner, allowing rotary movements, in that the opposite end to the connection point 10 of the first rod 6 is connected to one end of the balancing arm 4, the end opposite to the connection point of the second rod 7 is connected to the crane tower, and the opposite end to the connection point 10 of the third rod 9 , is connected to arrow 3.

FR7823470A 1977-08-10 1978-08-09 BALANCING DEVICE FOR MOBILE ARROWS OF CRANES Withdrawn FR2399970A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7709055A SE406903B (en) 1977-08-10 1977-08-10 DEVICE FOR BALANCING A MOVING LAYER ARM AT A CRANE CONSTRUCTION

Publications (1)

Publication Number Publication Date
FR2399970A1 true FR2399970A1 (en) 1979-03-09

Family

ID=20331981

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823470A Withdrawn FR2399970A1 (en) 1977-08-10 1978-08-09 BALANCING DEVICE FOR MOBILE ARROWS OF CRANES

Country Status (6)

Country Link
DE (1) DE2834600A1 (en)
DK (1) DK354578A (en)
FI (1) FI782437A (en)
FR (1) FR2399970A1 (en)
GB (1) GB2002323A (en)
SE (1) SE406903B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3438937C2 (en) * 1984-10-24 1996-12-19 Liebherr Werk Biberach Gmbh Tower crane with adjustable counterweight
FR2641773B1 (en) * 1989-01-18 1991-03-15 Potain Sa LIFT BOOM CRANE WITH BOOM RETURN DEVICE

Also Published As

Publication number Publication date
DK354578A (en) 1979-02-11
SE406903B (en) 1979-03-05
DE2834600A1 (en) 1979-02-22
FI782437A (en) 1979-02-11
GB2002323A (en) 1979-02-21

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Legal Events

Date Code Title Description
ST Notification of lapse