Rolling mill roll changing device and roll changing method thereof

Abstract

The invention discloses a rolling mill roll changing device and a roll changing method thereof. The device comprises a top roll assembly and a bottom roll assembly, wherein the top roll assembly is provided with a top roll and two top roll bearing seats, and the two ends of the top roll are mounted in the two top roll bearing seats through bearings; the bottom roll assembly is provided with a bottom roll and two bottom roll bearing seats, and the two ends of the bottom roll are mounted in the two bottom roll bearing seats through bearings; and the top roll assembly is placed on the bottom rollassembly, rolling mechanisms are connected to one sides, away from the top roll assembly, of the bottom roll bearing seats, and the rolling mechanisms are placed on guiding rails and can move in thelength direction of the guiding rails. The rolling mill roll changing device and the roll changing method thereof have the advantages of convenient and quick operation, low cost, and a completely equivalent roll change function.

Description

technical field [0001] The invention relates to the field of metal rolling, in particular to a rolling mill roll changing device and a roll changing method thereof. Background technique [0002] After the rolling mill rolls work for a period of time, the surface of the rolls wears and loses precision, and must be replaced. When changing rolls in existing rolling mills, the upper and lower rolls are generally disassembled separately, and the operator uses driving and lifting tools to forcibly remove the rolls from the rolling mill archway 9, which has the disadvantages of time-consuming and labor-intensive operators. There are also roll changing trolleys used to change rolls, such as Image 6 As shown, when changing rolls, the lifting and pressurizing system 8 in the archway 9 of the main rolling mill on the left side of the figure has lifted the rolls to the roll changing position, and the empty car guide rail 4 of the roll changing trolley enters the archway 9 of the rack, ...

AI Technical Summary

Problems solved by technology

When changing rolls in existing rolling mills, the upper and lower rolls are generally disassembled separately, and the operator uses the driving and lifting tools to forcibly remove the rolls from the rolling mill archway 9, which has the disadvantages of time-consuming and labor-intensive operators.

There are also roll changing trolleys used to change rolls, such as Image 6 As shown, when changing rolls, the lifting and pressurizing system 8 in the archway 9 of the main rolling mill on the left side of the figure has lifted the rolls to the roll changing position, and the empty car guide rail 4 of the roll changing trolley enters the archway 9 of the rack, and after reaching the correct station , unload the rolls and drop them on the roll changing trolley, then drive the roll changing trolley out of the frame archway 9, put the roll changing trolley equipped with new rolls into the frame archway 9 along the guide rail 4, and put the new rolls into the rolling mill archway 9 However, the special roll changing trolley is bulky and equipped with a special drive system, which makes the equipment expensive; at the same time, due to the height of the trolley, the height of the rolling mill archway is correspondingly increased, which has a negative impact on the strength and stiffness of the rolling mill archway

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