Swing arm structure of seamless steel pipe rolling mill

Abstract

The invention relates to a swing arm structure of a seamless steel pipe rolling mill, which is characterized in that it comprises a swing arm block, a left side plate, a right side plate, connecting steel pipes, and a ribbed plate; the left side plate and the right side plate are arranged symmetrically One end of the left side plate and the right side plate is welded to the swing arm block, the other end of the left side plate and the right side plate is welded to the connecting steel pipe, and the two ends of the connecting steel pipe are respectively welded to the left The side plate and the right side plate are respectively welded with the reinforcing rib plate between the left side plate and the connecting steel pipe, and between the right side plate and the connecting steel pipe. The invention can reduce the difficulty and manufacturing cost of the casting process, and at the same time avoid the uneven volume shrinkage of steel castings, the formation of cracks in the thin section of the workpiece, and the looseness of the thick section, so as to ensure the welding seam between the workpieces The quality and the overall quality of the lower drum can greatly reduce the processing difficulty.

Description

technical field [0001] The invention belongs to the technical field of seamless steel pipe production equipment, in particular to a swing arm structure of a seamless steel pipe rolling mill. Background technique [0002] The PQF rolling mill stand is the core equipment of the world's advanced seamless steel pipe production line PQF pipe rolling mill. The design requires high precision and difficult processing. At present, all such equipment is imported, which is not only expensive, but also has a long construction period. The swing arm of the rack is an integral part of the equipment, and each PQF rack requires three swing arms. The technical difficulties of the above-mentioned swing arm are: the space size of the swing arm is too long, the precision requirement is high, and the processing is relatively difficult. The swing arm structure is an integral casting structure. The two side arms of this structure are both thin and long, and the thickness of the swing arm block is...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of difficult processing of rolling mill swing arm in the prior art and provide a swing arm structure of seamless steel pipe rolling mill with simple processing and low manufacturing cost

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