Deceleration transmission distribution system and method of rod and wire three-roller mill

By combining the integrated reduction gearbox and the angled transmission box, the complexity and maintenance challenges of the transmission system of the bar and wire rod three-roll mill were solved, achieving efficient and stable power transmission and improving the precision and quality of rolled products.

CN121474311APending Publication Date: 2026-02-06CHINA NAT HEAVY MACHINERY RES INSTCO
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Patent Information

Application Number
CN202511769295.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-28
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

The existing three-roll bar and wire rod mills have complex transmission systems, are difficult to manufacture and assemble, and are inconvenient to maintain, making it difficult to meet the requirements of high-precision rolling.

Method used

The design combines an integrated reduction gearbox with an angled transmission box. The gear set in the integrated reduction gearbox evenly distributes power to the three output shafts, and the angled transmission box achieves precise conversion of power direction. Ultimately, the three input shafts are distributed at a 120° angle and synchronously transmit power to the rolling mill stand.

Benefits of technology

The transmission structure has been simplified, manufacturing costs and maintenance difficulty have been reduced, transmission efficiency and synchronization have been improved, and the dimensional accuracy and surface quality of rolled products have been enhanced.

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Abstract

The invention relates to the technical field of round wood rolling, and discloses a speed reduction transmission distribution system and method of a rod and wire three-roller mill. The system comprises an integrated speed reduction distribution box, two 30-degree bevel transmission boxes and five couplings, in the integrated speed reduction distribution box, single-path input power is synchronously distributed into three paths of output through a gear set, the included angle between every two adjacent output shafts is 30 degrees, and after the directions of the bevel transmission boxes are converted, the included angle between the three paths of output axes is 120 degrees, and the three paths of output axes correspond to an input shaft of a three-high rod and wire mill rack. A traditional overall module type and external reduction gearbox structure is abandoned, transmission structure simplification, cost reduction and convenient maintenance are achieved through collaborative optimization of parts, meanwhile, transmission efficiency and stability are improved, the problems that in the prior art, the structure is complex, and manufacturing and assembling difficulty is large are solved, and the power transmission device is suitable for power transmission scenes of various rod and wire three-roller mills.
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