| 摘要 |
<p>Equipment for removing and refitting resilient packing in a cardan joint at the base of a platform or column mounted on the sea bed, the cardan joint connected a pipe in the sea bed with a pipe leading up the column, said packing comprising a stack of rubber rings and metallic washers disposed between end plates and capable of being deformed in torsion and said packing being compressed between an abutment on the end of a hollow shaft in the cardan joint and an abutment on the adjacent end of a pipe. The equipment, comprising a casing, a carriage movable along guides on the casing, and a fork-shaped gripper mounted on the carriage, is provided with hooks adapted to secure the casing to the cardan joint, and drive means operable to move the carriage so that the gripper embraces the packing when the casing is secured to the cardan joint, said gripper including power operated pinchers having jaws arranged to engage lugs on the end plates of the packing and operable to force the end plates towards one another to compress the packing and reduce the overall length of the packing.</p> |
