| 摘要 |
<p>Disclosed is an unlatching tool (100) that may be used to unlatch a control rod from a control drive. The unlatching tool may include a baseplate (110), a first guide member (120) and a second guide member (125) attached to the baseplate (110), a first frame (140A) and a second frame (140B) attached to the baseplate (110), a stepper motor (155) attached to the first frame (140A), a worm drive (150) attached to the first frame (140A), a cable reel shaft (400) attached to the first and second frame (140A,140B), a hose (200) wrapped around the cable reel shaft (400), and a hook (180) attached to a first end of the hose (200). The hook (180) may include a cylindrical sleeve (182) having at least one finger (184,185,186) configured to fold and unfold. Disclosed also is a method of unlatching a control rod from a control drive.
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