Engine speed limiter for a hoist

Details Engine speed limiter for a hoist Engine speed limiter for a hoist

E - Fixed Constructions

21

B

E21B 7/02 (2006.01) B66D 1/58 (2006.01) E21B 19/00 (2006.01) E21B 41/00 (2006.01)

Patent

CA 2501255

A mobile service rig (10) for wells includes a hoist (12) powered by an internal combustion engine (32). In response to the hoist exerting a predetermined lifting force, the lifting force (14) is limited by automatically limiting or reducing the speed of the engine.

L'invention concerne une plate-forme de maintenance mobile (10) pour puits de forage, comportant un treuil (12) entraîné par un moteur à combustion interne (32). En fonction de la force de levage prédéterminée exercée par le treuil, cette force de levage (14) est limitée par la limite ou la réduction automatique du régime du moteur.

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