Sizing machine

Abstract

The invention relates to a sizing machine. According to the sizing machine, the number of replaced roller machine frames can be decreased, and the production cost can be saved accordingly. The sizing machine comprises first transmitting devices, second transmitting devices, a first machine base, first roller machine frames, a second machine base and second roller machine frames. The first roller machine frames and the second roller machine frames are sequentially arranged in the rolling direction of steel pipes, the first roller machine frames are fixedly arranged on the first machine base, and the second roller machine frames are fixedly arranged on the second machine base. The outer diameters of largest billet pipes which can be rolled through the first roller machine frames are larger than the outer diameters of largest billet pipes which can be rolled through the second roller machine frames. An inlet archway is arranged on the outer side face of the first machine base, and an outlet archway is arranged on the outer side face of the second machine base. Output shafts of the first transmitting devices are connected with input shafts of the first roller machine frames, the number of the second transmitting devices is equal to the number of the second roller machine frames, and output shafts of the second transmitting devices are connected with input shafts of the second roller machine frames.

Description

technical field [0001] The invention relates to a seamless steel pipe production equipment, in particular to a sizing machine. Background technique [0002] The sizing machine is a kind of equipment widely used in the field of seamless steel pipe production. It is mainly used for sizing and rolling the blank pipes rolled by the pipe rolling mill to obtain seamless steel pipes with high-precision external dimensions. The sizing machine mainly includes a plurality of roll stands arranged in parallel on the rolling position, a transmission device for driving each roll stand, and a roll changing device. However, when the existing sizing machine rolls steel pipes, its multiple roll stands The racks are of the same specification. When it is necessary to roll steel pipes of different specifications, it is necessary to replace all the roll racks of the sizing machine with new roll racks of corresponding specifications at the same time through the roll changing device. Because the vo...

AI Technical Summary

Problems solved by technology

The sizing machine mainly includes a plurality of roll stands arranged in parallel on the rolling position, a transmission device for driving each roll stand, and a roll changing device. However, when the existing sizing machine rolls steel pipes, its multiple roll stands All the roll stands of the sizing machine are of the same specification. When it is necessary to roll steel pipes of different specifications, it is necessary to replace all the roll stands of the sizing machine with new roll stands of corresponding specifications at the same time through the roll changing device. Because the volume and weight of the roll stands are relatively large Large, the process of replacing the roll stand is long and cumbersome, which increases the cost of production

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