Capstan winch

Details Capstan winch Capstan winch

B - Operations, Transporting

66

D

B66D 1/74 (2006.01)

Patent

CA 2496944

The invention concerns a so-called capstan winch (1) comprising drums (2, 3) driving a cable (C) and provided with a peripheral wall (22, 32) around which are strung independent peripheral rings (40-45, 50-55). Said rings are provided with a peripheral groove designed to receive the cable (C) and are made of an elastic material so as to allow both the cable (C) to be driven and a relative sliding movement between the peripheral rings (40-45, 50-55) and the peripheral wall (22, 32), the relative sliding movement being of amplitude substantially equal to longitudinal deformations of the cable (C), when it is subjected to tension stresses. The two drums (2, 3) can be axially offset relative to each other (p/2) and their axes of rotation (.DELTA.¿1?, .DELTA.¿2?) may form a non-null angle of inclination. The invention is particular applicable to deep sea oil exploration.

L'invention concerne un treuil (1) du type dit à cabestan comprenant des tambours (2, 3) entraînant un câble (C)et muni d'une paroi périphérique (22, 32) autour de laquelle sont enfilés des anneaux périphériques indépendants (40- 45, 50-55). Ces anneaux sont munis d'une gorge périphérique destinée à recevoir le câble (C) et sont réalisés en matériau élastique de façon à permettre, à la fois, un entraînement du câble (C)et un glissement relatif entre les anneaux périphériques (40-45, 60-55) et la paroi périphérique (22, 32), le glissement relatif étant d'amplitude sensiblement égale aux déformations longitudinales du câble (C), lorsqu'il est soumis à des tensions. Les deux tambours (2, 3) peuvent être décalés axialement l'un par rapport à l'autre (p/2) et leurs axes de rotation (.DELTA.1, .DELTA.2) présenter un angle d'inclinaison non nul. Application notamment à la recherche pétrolière en eau profonde.

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