Torque limiting mechanism

F - Mech Eng,Light,Heat,Weapons – 16 – D

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Details

F16D 43/20 (2006.01) F04B 49/10 (2006.01) F16D 3/76 (2006.01) F16D 43/202 (2006.01)

Patent

CA 2232274

A torque limiting device for a compressor. An input shaft of the compressor is connected to the torque limiting device so that the power source driving the compressor will not be affected if abnormal conditions cause the compressor to generate an excessive load. A flexible connector is located between the power source and the compressor. The flexible connector is deformed when torque is applied to the compressor input shaft. When the applied torque exceeds a predetermined value, a spring is permitted to expand axially, which uncouples the compressor from the power source. The torque at which the device uncouples is stable and predictable.

La présente invention a pour objet un dispositif limiteur de couple destiné à un compresseur. L'arbre de commande du compresseur est raccordé au dispositif limiteur de couple de façon à protéger la source motrice du compresseur dans le cas où des conditions anormales causeraient une surproduction du compresseur. Un accouplement élastique est interposé entre la source motrice et le compresseur. L'accouplement élastique se déforme lorsque qu'un couple est appliqué à l'arbre de commande du compresseur. Lorsque le couple appliqué excède une valeur prédéterminée, la déformation axiale d'un ressort produit le désaccouplement du compresseur de la source motrice. La valeur du couple de désaccouplement est stable et prévisible.

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