Hydraulic chuck

Details Hydraulic chuck Hydraulic chuck

E - Fixed Constructions

21

B

E21B 17/042 (2006.01) B23B 31/173 (2006.01)

Patent

CA 2228220

A hydraulic chuck for a drill string has a hydraulic actuator to operate the jaws. The actuator remains stationery while the spindle is rotated and a pair of skirts attached to the actuator cover the bearing assemblies. The jaws are supported in slots in the spindle and are part cylindrical to reduce stress in the spindle. The chuck is secured to a drive unit by bolts received in open slots in an attachment flange to facilitate attachment of the chuck alter routine maintenance.

Mandrin hydraulique pour train de tiges comportant un actionneur hydraulique servant à faire fonctionner ses mors. L'actionneur reste fixe pendant que la broche tourne, et deux jupes rattachées à l'actionneur recouvrent les dispositifs à roulement. Les mors sont supportés dans des fentes et sont en partie cylindriques pour diminuer la contrainte dans la broche. Le mandrin est fixé à l'unité d'entraînement par des boulons logés dans des ouvertes dans une bride de fixation afin de faciliter la fixation du mandrin après les travaux d'entretien réguliers.

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