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3. Lifting wedges
3.1 Definition
Lifting jibs are "C"-shaped pieces of equipment whose load-bearing lower arm is connected to the upper arm by a vertical upright.
The upper arm can also be fitted with a self-balancing or adjustment system to reconcile the center of gravity when empty and when loaded.
Depending on the different loads to be entered, the cés can be :
cut into the mass;
in the form of a reconstituted box;
with balancing counterweight ;
with adjustable ring ;
with spring balancing system.
The main advantages of a cé are its versatility,...
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Lifting wedges
Hanging forks
Bibliography
INRS (Institut national de recherche et de sécurité) publications
ED 518 – Safety in the use of light manual handling tools and equipment
ED 389 – The slinger's handbook.
Publications OPPBTP (Organisme professionnel de prévention du bâtiment et des travaux publics)
— Practical manual no. 18 – Ropes – cables – chains
— Practical manual...
Main regulatory texts
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European directives
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Design
Directive 98/37/EC of June 22, 1998 (incorporating Directives 89/392/EEC, 91/368/EEC, 93/44/EEC and 93/68/EEC) – "Machinery" Directive
Directive 89/336/EC of May 3, 1989 – "Electromagnetic Compatibility" Directive
Directive 92/31/EC of April...
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Standardization
French standards Afnor (NF) and European standards CEN (EN)
Slings
- – Slings (definitions) – classification – slinging methods) - NF E 52‐150 : - décembre 1986
- – Recommendations for some slinging methods - NF E 52‐151 : - décembre 1981
- – Flat slings made of woven webbing and chemical textiles - NF G 36-030 : déce - mbre 1986
- – Round and flat textile slings - NF...
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