Composite balance device of high-rigidity rolling mill

Abstract

The invention discloses a composite balance device of a high-rigidity rolling mill. The composite balance device comprises a main bearing block. An operation side and a transmission side are arranged at the two ends of the main bearing block correspondingly. The main bearing block is further provided with a roller system arranged between the operation side and the transmission side. An operation side support used for supporting the roller system is arranged in the operation side. The operation side support is provided with a plunger type disc-shaped composite spring set. The transmission side is provided with an auxiliary bearing provided with the plunger type disc-shaped composite spring set. The plunger type disc-shaped composite spring set comprises a plunger and a plurality of disc springs sequentially stacked. Through holes are formed in the middles of the multiple disc springs, and the plunger is inserted in the through holes.

Description

technical field [0001] The invention belongs to the technical field of rolling mill balancing systems, and in particular relates to a composite balancing device for high-rigidity rolling mills. Background technique [0002] At present, in order to improve the precision of rolled products, all finished rolling mills and finishing rolling units in domestic and foreign steel mills usually adopt high-rigidity rolling equipment, such as various short-stress rolling mills that are currently popular. Their common features are as few stress-bearing parts as possible during rolling, and the path of the force-bearing circuit is as short as possible. Some independent balance systems are added to the bearing housings of the work roll series and the tie rod racks to eliminate the excessively large stress-bearing parts during the rolling process. In order to reduce the jump value of the steel roll that affects the quality of rolled products, improve its anti-deformation ability and enhanc...

AI Technical Summary

Problems solved by technology

However, for the reason of influencing factor (2), the current technology ignores that when the finished product is rolled, its running gap will always exist, and it will have a huge impact on the product quality and the smooth operation of the equipment during work, that is, the rolling mill The four-row short cylindrical bearing that supports the main load of the roll has a normal working radial clearance value that is required by the standard when it leaves the factory, and the current rolling technology at home and abroad has not yet obtained due recognition for the existence of this working clearance. Therefore, from the perspective of equipment design, the impact of this working gap on rolled products has not been effectively controlled and well resolved. Stability, the work roll system must bear huge instantaneous irregular impact, resulting in roll skipping and random changes in the pass shape, and the shape and size of the head of the rolled material are different, resulting in unsuitable guides and guards that frequently jam the steel, resulting in The continuous rolling process is difficult to bite into, and the failure has no certain regularity. It is necessary to repeatedly stop production to adjust the guide of the rolling mill, which is extremely unfavorable for the continuous, normal, continuous and stable operation of the unit. At present, there are fatal roll jumps and The random change of the hole pattern is powerless to produce some products that require higher precision.

Therefore, the above-mentioned mature main models widely used in domestic and foreign steel are no longer suitable for enterprises called upon by the state to further upgrade products, improve product quality and increase economic benefits.

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