CN2155962Y - Two-purpose device for balance and roll bending - Google Patents

Abstract

The utility model relates to the improvement for an old type balancing device of a rolling machine; therefore, a dual purpose device for balancing work rollers and bending rollers is provided. The balancing device of a rolling machine is that two hydraulic cylinders which are the same of original hydraulic cylinders are added on the bearing box of the lower working roller of an old type four-roller cold-rolling machine to lead balance force to increase by one time; besides, in an oil-pressure system, a proportional valve and an electrical liquid controller are added for adjustment and control. The utility model overcomes the problems that the control of an old rolling machine is provided with slow speed of reaction and the quality of plate shapes is inferior. The utility model has the advantages of sensitivity, reliability, convenient operation, etc. The balancing device of a rolling machine can be used for reforming old type rolling machines.

Description

Two-purpose device for balance and roll bending

The utility model belongs to metallurgy rolling machinery auxiliary device, the particularly special device of cold roll roll shape adjusting.

In the steel rolling of smelter is produced, newly-designed cold-rolling mill has all adopted more advanced work roll bending device behind the seventies, as publication number is disclosed a kind of " six-high cluster mill asymmetric force hydraulic bending working roll " in the GK85104265 document, when using this device roller, the bending roller force of fore side top working roll is relative with the bending roller force of transmission side bottom working roll, and fore side bottom working roll bending roller force and transmission side top working roll bending roller force equate.Two groups of bending roller force sizes, directions can independently be adjusted, and make same working roll one end with positive bending roller force roller, and the other end is controlled cold-reduced sheet plate shape with negative bending roller force roller preferably with this.

In some long-established enterprises, particularly five, use above-mentioned roll-bending device on the old-fashioned cold-rolling mill in the sixties, then need memorial archway and workroll bearing case, back-up roll bearing case etc. carries out bigger transformation.The milling train stopping production transformation time is long, will directly influence production, causes economic loss.As Anshan iron and steel plant cold rolling mill φ 500/ φ 1300 * 1700mm 4-roller reversible cold rolling mill, be exactly that the fifties is introduced the old equipment of φ 500/ φ, 1300 * 1700mm from the Soviet Union, its roll shape is adjusted design of roller rest type and roll dressing, and roll shape control then needs to control with emulsion flow, drafts and mill speed.Therefore, adopt low mill speed behind the roller that newly changes jobs, light reduction and the increase inferior measure in road are to give the hot-rolling type.This kind roll shape control method falls behind, and reaction speed is extremely slow, yields poorly, and is of poor quality.

Present situation at long-established enterprise, in order to overcome of the flow branch band control of old-fashioned milling train by emulsion, the weakness of response lag, the utility model is transformed the working roll bascule of old-fashioned 4-roller cold rolling mill dexterously, thus the new equipment that provides a kind of work roll bending device and bascule to be integrated.Use this device and both can play the bascule effect of working roll, can play the work roll bending device again.Reach with this and to give full play to old-fashioned mill production, the purpose that improves the quality.

The utility model is achieved in that increases by two hydraulic cylinders identical with original hydraulic cylinder again on the workroll bearing case of old-fashioned four high cold mill, the hydraulic cylinder that promptly has four pressure to equate on each bottom working roll bearing housing doubles equilibrant force.In addition, in its oil hydraulic system, increase a proportioning valve and an electrohydraulic controller, oil pressure can be controlled in the very wide scope like this, with the balance of realization working roll and the difunctional effect of work roll bending adjustment.

The utility model has overcome that old-fashioned milling train is slow by the reaction speed that emulsion control roll shape exists, sensitivity is low, deficiencies such as strip shape quality difference, and the balance and the roller that have working roll are simultaneously adjusted difunctional effect.Sensitive reliable, easy to operate.Use it and be convenient to control roll shape and plate shape, improve the output and the quality of product, can make plate shape wooden dipper curvature reduce by 0.18%, reduce the roll change number of times, reduce roll consumption 0.03kg/t.Has bigger economic benefit.

Below in conjunction with the embodiment in the accompanying drawing, the description detailed in addition to the utility model:

Fig. 1 is a hydraulic cylinder distribution schematic diagram on the workroll bearing case

Fig. 2 is the apparatus structure schematic diagram

1-hydraulic cylinder among the figure, the 2-bearing housing, the 3-working roll, 4-regulates proportioning valve, 5-console, 6-electrohydraulic controller.

With Anshan iron and steel plant cold rolling mill φ 500/ φ 1300 * 1700mm 4-roller reversible cold rolling mill is example, and this milling train is the equipment that the fifties is introduced from the Soviet Union.Be provided with the hydraulic cylinder (1) of 2 φ 120 on former working roll bascule every side bottom working roll bearing housing (2), its pressure respectively is 1000MPa.2 bearing housings in both sides are totally 4 hydraulic cylinders, top working roll (3) and two top roll bearing housings (2) balance can be got up, and guarantee to have certain slit between the upper and lower working roll.

The utility model correspondingly increases by two hydraulic cylinders identical with original hydraulic cylinder on the existing equipment basis, promptly increase by two φ 120mm on the bottom working roll bearing housing again, and pressure is the hydraulic cylinder (1) of 1000MPa.On each bottom working roll bearing housing 4 hydraulic cylinders are arranged like this, equilibrant force is doubled.In addition, on fluid pressure line, set up MBY ₁-40 types are regulated proportioning valve (4), and oil pressure is regulated arbitrarily in 0～1000MPa.Go up installation BSA-140 type electrohydraulic controller (6) at console (5), be used for controlling and adjusting proportioning valve (4).After transforming, originally only be used for the device of working roll balance, not only have the effect of balance working roll device, but also have the effect of work roll bending device concurrently.Its bending roller force can be regulated change on demand, to reach the purpose of control panel shape.

The utility model is since installing and using, and effect is obvious, and is sensitive reliable, easy to operate.

Detect through practice, the every increase of oil pressure 300MPa during roller, its roll shape is changed to about 0.02mm.

Claims (2)

1, the dual-purpose device of a kind of balance and roller mainly is made up of workroll bearing case (2), hydraulic cylinder (1) and hydraulic system; It is characterized in that on bottom working roll bearing housing (2), increasing again two and the identical hydraulic cylinder of original hydraulic cylinder (1), equilibrant force is increased be twice.

2, the dual-purpose device of balance according to claim 1 and roller is characterized in that setting up proportioning valve (4) in hydraulic system, go up at console (5) electrohydraulic controller (6) is installed.

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