A roll assembly

Abstract

The invention discloses a roll assembly, comprising a roll, a bearing I, a bearing seat I, and a bearing cover I arranged on the transmission side of the roll, and a bearing II, a bearing seat II, and a bearing cover II correspondingly arranged on the non-driving side of the roll. The outer diameter of the journal on the non-drive side of the roll is smaller than that on the drive side, the size of the bearing II is smaller than the size of the bearing I, and the size of the bearing seat II is smaller than the size of the bearing seat I; by reducing the outer diameter of the journal on the non-drive side of the roll And the overall dimensions of the bearing and the bearing seat arranged outside the journal of the non-transmission side shorten the distance between adjacent bearing seats, thereby reducing the nominal diameter of the roll and reducing the system size of the entire roll assembly.

Description

technical field [0001] The invention belongs to the field of rolling equipment for metal pipes or wire rods, and in particular relates to a roll assembly. Background technique [0002] At present, in the seamless steel pipe rolling production line, the rolling mill is the main extension and deformation equipment of the seamless steel pipe. Due to the reasonable pass configuration of the continuous pipe rolling mill, the rolled blank pipe is uniformly deformed, so the product wall thickness accuracy and surface quality are high. [0003] Continuous pipe rolling mills are generally equipped with several rolling stands, and there are no less than two roll assemblies installed in the stands. Due to the large volume of the roll bearings, in order to avoid interference, the diameter of the rolls is generally made larger. , to make room for the bearing seat. Larger roll diameter, on the one hand, will lead to bulky equipment and increased investment; on the other hand, it will le...

AI Technical Summary

Problems solved by technology

Larger roll diameter, on the one hand, will lead to bulky equipment and increased investment; on the other hand, it will lead to an increase in rolling force and rolling torque; and it will lead to an increase in the distance between stands, which in turn will lead to a decrease in the yield of steel pipes, etc.

These factors have adverse effects on the design and production service of the continuous rolling mill

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