Wrenching unit

Details Wrenching unit Wrenching unit

B - Operations, Transporting

25

B

B25B 13/50 (2006.01) E21B 19/16 (2006.01)

Patent

CA 2494598

The present invention generally provides an apparatus for handling tubulars. In one aspect, the present invention provides a wrenching head for supplying torque aver a large step less clamping range for connecting tubulars. In one embodiment, the wrenching head includes hydraulic clamping cylinders guided by pendulum bolts. The pendulum bolts prevent the piston from twisting or bending under a high clamping force. In another embodiment, the present invention provides a wrenching head having adjustable jaw units. The jaw units comprise a shaft threadedly connected to a jaw body. The jaw body includes a gear profile formed on an outer surface. A turn ring having a gear profile for mating with the gear profiles of the jaw body may be rotated to cause all of the jaw units to adjust simultaneously. In another aspect, the present invention provides a suspension unit to couple a spinner to the wrenching unit.

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