A machine lock type rotary excavating drill pipe

By using multiple sets of reaming blocks and hydraulically driven rotary drill rods, combined with the linkage of inner and outer guide cylinders and sealing components, efficient drilling and automated cleaning of complex formations are achieved. This solves the problems of poor adaptability and imperfect sealing in existing technologies, and improves the service life of the equipment and construction efficiency.

CN122344980APending Publication Date: 2026-07-07JIANGSU HENGXING JINQIAO SPECIAL VEHICLE CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU HENGXING JINQIAO SPECIAL VEHICLE CO LTD
Filing Date
2026-06-01
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing mechanical lock rotary drilling rods have poor adaptability to complex formations, frequent operation interruptions, inadequate sealing and protection, insufficient accuracy in adjusting the borehole diameter, and incomplete cleaning and maintenance, resulting in borehole wall deviation, uneven diameter, severe component wear, and short service life.

Method used

The design employs multiple sets of expanding blocks, combined with the grouped drive of hydraulic cylinders and slide bars, to adapt to different geological conditions; the linkage between the inner and outer guide cylinders and sealing components provides precise expanding and slag removal functions; the automated cleaning of the spray mechanism, combined with electric slide rails and servo motors, achieves targeted cleaning and cooling.

Benefits of technology

It enables efficient drilling in hard rock, gravel and other strata, reduces downtime, ensures drilling quality, extends equipment life, reduces construction costs, and simplifies equipment configuration.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122344980A_ABST
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Abstract

The application relates to the technical field of rotary drilling pipes, in particular to a machine lock type rotary drilling pipe which comprises a driving sleeve, a drill pipe body is arranged on the inner side of the driving sleeve, a drill bit cylinder is arranged at the lower end of the drill pipe body, a cavity is formed in the inner side of the drill bit cylinder, an adapting mechanism is arranged on the inner side of the drill bit cylinder, the adapting mechanism comprises a convex sealing bin, a spraying mechanism is arranged on the inner wall of the convex sealing bin, through the grouping design of two groups of four hole expanding blocks, the replaceable outer coating is matched, the adaptability to different geological conditions such as hard rock, pebble, soft soil layer and the like is realized. Through the independent driving of the first hydraulic cylinder and the cross rod, the second hydraulic cylinder and the pressing plate, the grouping transmission of the adjusting slide rod is matched, the working states of the two groups of hole expanding blocks can be quickly switched, the design of one spare and one use greatly reduces the downtime and part replacement time, and the machine lock type rotary drilling pipe meets the continuous drilling demand of complex strata.
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