Coal mine drill rod machining production line and method combining upsetting and welding processes

By combining upsetting and welding processes, a coal mine drill pipe processing production line has been established, achieving efficient welding and upsetting of the drill pipe ends. This solves the problems of insufficient equipment flexibility and poor precision in existing technologies, and improves the adaptability and maintenance efficiency of the production line.

CN121946205APending Publication Date: 2026-05-01CHONGQING LANGXIAN MASCH CO LTD
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Patent Information

Application Number
CN202610363065.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-24
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing drill rod end processing suffers from problems such as low efficiency, poor accuracy, and insufficient equipment flexibility due to its split-operation nature. In particular, when the forming cavity size of the upsetting equipment is fixed and cannot be adapted to different length requirements, it leads to low efficiency in process connection and easy changes in drill rod posture, which affect upsetting accuracy.

Method used

A coal mine drill rod processing production line combining upsetting and welding processes was designed. It adopts a two-stage docking structure and easily disassembled and replaceable components such as hydraulic cylinders and upsetting seats. The external threaded sleeve is rotated and welded by a motor and extruded and shaped by a hydraulic cylinder, which realizes efficient welding and upsetting of the drill rod end. The length of the forming cavity can be adjusted in stages to adapt to different drill rod lengths.

Benefits of technology

It improves the versatility and production continuity of the equipment, reduces the cost of special tooling, shortens equipment maintenance time, and ensures processing accuracy and production stability.

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Abstract

The invention relates to the field of upsetting, in particular to a coal mine drill rod machining production line combining upsetting and welding processes and a method, and the coal mine drill rod machining production line comprises a bottom plate used for supporting all functional parts of the production line; the upsetting device comprises a bottom plate, a supporting table and an upsetting part, the supporting table is arranged on the bottom plate, the upsetting part is arranged in the supporting table, and the upsetting part is used for positioning and clamping the upsetting part of a drill rod; the pressing parts are arranged on the top of the bottom plate and the outer side of the supporting table correspondingly and used for conducting extrusion heading treatment on the ends of the clamped drill rods; according to the coal mine drill rod machining production line combining the upsetting and welding technology and the method, the medium-length forming cavity and the long-length forming cavity can be flexibly switched through a two-stage butt-joint structure, the whole set of upsetting assembly does not need to be replaced, the upsetting assembly is not required to be replaced, the upsetting assembly is not required to be replaced, and the production efficiency is improved. And the length requirements of different drilling rod upsetting parts can be met.
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