| 摘要 |
The present invention relates to an anti-stress riser York and, more specifically, to an anti-stress riser York wherein when a riser is moved, load stress generated in the center of the riser is reduced by a pipe gripper in accordance with gripping both ends of the riser, thereby preventing deformation of the riser and function deterioration, extending durability of the riser, and dealing with an increase of a length of the riser as capacity of a drilling derrick is increased. According to the present invention, the anti-stress riser York used when transferring the riser comprises: a transfer frame connected to a crane to be horizontally installed; riser grippers respectively installed in both ends of the transfer frame and respectively gripping both ends of the riser placed in a lower side of the transfer frame by a drive unit; and a pipe gripper installed to grip a central portion of the riser in the transfer frame. |
