FR2256101A1 - Telescopic jib crane overload protection system - compares jib angle derricking force with permissible maxima - Google Patents

Telescopic jib crane overload protection system - compares jib angle derricking force with permissible maxima

Info

Publication number
FR2256101A1
FR2256101A1 FR7346969A FR7346969A FR2256101A1 FR 2256101 A1 FR2256101 A1 FR 2256101A1 FR 7346969 A FR7346969 A FR 7346969A FR 7346969 A FR7346969 A FR 7346969A FR 2256101 A1 FR2256101 A1 FR 2256101A1
Authority
FR
France
Prior art keywords
jib
derricking
angle
force
compares
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.)
Granted
Application number
FR7346969A
Other languages
French (fr)
Other versions
FR2256101B1 (en
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.)
BIRON DIDIER FR
Original Assignee
BIRON DIDIER FR
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 BIRON DIDIER FR filed Critical BIRON DIDIER FR
Priority to FR7346969A priority Critical patent/FR2256101A1/en
Publication of FR2256101A1 publication Critical patent/FR2256101A1/en
Application granted granted Critical
Publication of FR2256101B1 publication Critical patent/FR2256101B1/fr
Granted 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
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical

Abstract

A derricking ram acts between the crane superstructure and the jib, and the lifting force exerted by the ram at this point is measured, as is the jib angle. The actual angle is compared with the maximum one at which the lifting force measured can be exerted without overloading the jib, or conversely the actual force exerted is compared with the maximum which can safely be exerted at the particular angle measured. Depending on the result, jib movement is either allowed or stopped, whatever the jib length and the weight of the load on the hook. The jib angle can be measured from the horizontal, from a datum line on the superstructure, or from the direction in which the derricking force acts.
FR7346969A 1973-12-28 1973-12-28 Telescopic jib crane overload protection system - compares jib angle derricking force with permissible maxima Granted FR2256101A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7346969A FR2256101A1 (en) 1973-12-28 1973-12-28 Telescopic jib crane overload protection system - compares jib angle derricking force with permissible maxima

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7346969A FR2256101A1 (en) 1973-12-28 1973-12-28 Telescopic jib crane overload protection system - compares jib angle derricking force with permissible maxima

Publications (2)

Publication Number Publication Date
FR2256101A1 true FR2256101A1 (en) 1975-07-25
FR2256101B1 FR2256101B1 (en) 1979-06-22

Family

ID=9129949

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7346969A Granted FR2256101A1 (en) 1973-12-28 1973-12-28 Telescopic jib crane overload protection system - compares jib angle derricking force with permissible maxima

Country Status (1)

Country Link
FR (1) FR2256101A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320894A1 (en) * 1975-08-14 1977-03-11 Forney International LOAD MEASURING AND DISPLAY DEVICE FOR A VARIABLE LENGTH ARM CRANE
FR2351395A1 (en) * 1976-05-14 1977-12-09 Pye Electronic Prod Ltd CHARGE INDICATOR SYSTEM
EP0285710A1 (en) * 1987-03-06 1988-10-12 3B6 sistemi elettro-idraulici s.n.c. Arm range and/or moment limiting device for elevator platforms
EP0289367A2 (en) * 1987-04-29 1988-11-02 Societe Montalbanaise De Construction Mecanique Driving and guiding system for a hydraulic crane with articulating arms
EP0349359A1 (en) * 1988-06-27 1990-01-03 Roux Industrie S.A. Torque or moment limiting system for hoisting devices
FR2636617A1 (en) * 1988-09-19 1990-03-23 Gobalet Gilbert Position indicating device for a loading crane installed on a lorry.
EP0364994A1 (en) * 1988-10-19 1990-04-25 Man Ghh Krantechnik Gmbh Crane control
US11447379B2 (en) 2018-10-09 2022-09-20 J.C. Bamford Excavators Limited Machine, controller and control method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320894A1 (en) * 1975-08-14 1977-03-11 Forney International LOAD MEASURING AND DISPLAY DEVICE FOR A VARIABLE LENGTH ARM CRANE
FR2351395A1 (en) * 1976-05-14 1977-12-09 Pye Electronic Prod Ltd CHARGE INDICATOR SYSTEM
EP0285710A1 (en) * 1987-03-06 1988-10-12 3B6 sistemi elettro-idraulici s.n.c. Arm range and/or moment limiting device for elevator platforms
EP0289367A2 (en) * 1987-04-29 1988-11-02 Societe Montalbanaise De Construction Mecanique Driving and guiding system for a hydraulic crane with articulating arms
FR2614610A1 (en) * 1987-04-29 1988-11-04 Meca Ste Montalbana Const SYSTEM FOR OPERATING AND CONTROLLING A HYDRAULIC CRANE WITH ARTICULATED ARMS
EP0289367A3 (en) * 1987-04-29 1990-02-07 Societe Montalbanaise De Construction Mecanique Driving and guiding system for a hydraulic crane with articulating arms
EP0349359A1 (en) * 1988-06-27 1990-01-03 Roux Industrie S.A. Torque or moment limiting system for hoisting devices
FR2636617A1 (en) * 1988-09-19 1990-03-23 Gobalet Gilbert Position indicating device for a loading crane installed on a lorry.
EP0364994A1 (en) * 1988-10-19 1990-04-25 Man Ghh Krantechnik Gmbh Crane control
WO1990004564A1 (en) * 1988-10-19 1990-05-03 Man Ghh Krantechnik Gmbh Crane control system
US11447379B2 (en) 2018-10-09 2022-09-20 J.C. Bamford Excavators Limited Machine, controller and control method

Also Published As

Publication number Publication date
FR2256101B1 (en) 1979-06-22

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Legal Events

Date Code Title Description
ST Notification of lapse