STRUCTURE OF TOP DRIVE SYSTEM

摘要

The present invention relates to a structure of a top drive system, and specifically, to a structure of a top drive system, which provides the driving power for drilling and pipe binding in the drilling work in land or offshore. The structure of a top drive system according to the present invention is a structure of a top drive system for ocean drilling, which comprises at least two motors (400) supplying a rotary force for ocean drilling; a gear (300) connected to the upper part of rotary shafts (410) of the motors (400); a quill (350) connected to the gear (300) in the side and delivering the rotary power supplied from the motors (400) to a rotary apparatus connected to the lower end; a swivel (200) supporting the quill (350) so that the quill (350) is able to rotate, and connected to the gear (300) on the lower end; at least two side parts (210) installed to be respectively extended downward from the outer lower end of the swivel (200) to be mutually symmetric; and a base part (220) installed to be extended toward the inner center from the lower end of each side part (210) and mounting the motors (400) in a detachable manner.