A new top drive connection structure

CN224338918UActive Publication Date: 2026-06-09中石化四机石油机械有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
中石化四机石油机械有限公司
Filing Date
2025-08-26
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing inverted V-shaped lifting ring structure results in an excessively high installation height for the top drive and traveling block combination, making it unsuitable for drilling rigs with a depth of 4000m or less, and also occupies too much vertical space on the drilling rig derrick.

Method used

Two symmetrically arranged vertical top drive lifting rings are used, which are connected to the split traveling carriage and top drive body through connecting plates. This eliminates the transition space of the inverted V-shaped lifting ring structure and uses connecting pins, pin holes, lifting rings and other components to achieve a stable connection, thereby reducing the overall installation height.

Benefits of technology

It significantly reduces the height of the top drive and traveling block after installation, ensuring a safe distance for the derrick. It is suitable for drilling rigs with a depth of 4000m and below, and has a more compact structure, making installation convenient and safe.

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Abstract

The utility model discloses a novel top drive connecting structure, it is installed between split type trolley and top drive body, including two symmetrical settings in split type trolley bottom both sides's connecting piece, two connecting pieces are connected with two top drive lifting ring one end respectively, two top drive lifting ring's other end is connected with top drive body's both sides respectively, any connecting piece includes two interval settings's connecting plate, and the end of top drive lifting ring is installed between two connecting plates, the utility model discloses two symmetrical vertical top drive lifting ring, has realized the lifting ring connection of non - drive top drive, and the mode that the both ends of top drive lifting ring are directly connected with split type trolley and top drive body respectively, has eliminated the vertical height redundancy of inverted V type lifting ring structure because of the inclination angle, has saved the transition space needed when inverted V type lifting ring structure installs, has reduced the height size of lifting ring installation significantly, and the whole structure is more light and compact, is applicable to 4000m and below's rig construction.
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