CN201394595Y - Wide-thick plate finishing straightening machine - Google Patents

Abstract

The utility model discloses a wide-thick plate finishing straightening machine which comprises a roller system frame, a working roller, a plurality of supporting rollers and a supporting roller bearing seat. The finishing straightening machine further comprises an adjusting device which comprises an adjusting backing plate and a hydraulic cylinder, the adjusting backing plate is arranged between the roller system frame and the supporting roller bearing seat, and the hydraulic cylinder which is articulated at one end of the adjusting backing plate is articulated with the roller system frame. The hydraulic cylinder pushes a tapered wedge plate to move, so as to lead the roller system frame to tightly press the supporting roller bearing seat, thereby ensuring effective contact between the supporting rollers and the working roller; By changing the high/low positions of the supporting rollers, the function of negative bending is achieved, so as to be beneficial for flattening a medium-wavesteel plate. Moreover, by adopting the roller type of elliptic curve, the stress concentration can be eliminated and the service life can be prolonged.

Description

Wide and Thick Slab finishing straightener

Technical field

The utility model relates to the finishing equipment of Wide and Thick Slab, more particularly, relates to a kind of Wide and Thick Slab finishing straightener.

Background technology

For Wide and Thick Slab production, the finishing straightener can be divided into that heat is rectified and coldly rectify two kinds, but both working rolls all (being smoothing roll) not only thin but also long, it is 25: 1 that slenderness ratio can reach, easy unstability when bearing aligning load.See also shown in Figure 1, therefore, consider the restriction of space structure, the present Wide and Thick Slab straightener 10 general multiple roll segmentation support patterns that adopt, promptly a working roll 11 is equipped with many backing rolls 12, (6 backing rolls of the general outfit of every working roll of thermal straightening machine, being equipped with 28 backing rolls and every working roll of cold straightener is general) to hang at roller by stacking spring 111 be on the framework 13 to this working roll 11, it is on the framework 13 that the backing roll 12 of this working roll 11 then is fastened on roller by back-up chock 14 and bolt 15, and the roll shape of this backing roll 12 generally is made up of the middle plain-barreled roll edged tapering a of portion (or limit portion circular arc), as shown in Figure 2.Because back-up chock 14 is being rigidly connected of framework 13 with roller, be difficult to guarantee that the lower surface of all backing rolls 12 is in same plane, and, owing to the piecewise function that consists of of backing roll 12 roll shapes, can only guarantee that first order derivative is continuous, and second derivative is discontinuous, and for limit portion circular arc, owing to be subject to processing the restriction of mode and machining accuracy, excessively the point of contact, position is difficult to accurately location, and first order derivative may discontinuity.Therefore, the contact condition that will guarantee backing roll 12 and working roll 11 in the practical application is very difficult, and the stress of average contact stress more than three times can occur being higher than at limit portion tapering (or limit portion circular arc) and middle plain-barreled roll transition position and concentrate, therefore must guarantee that the machining accuracy of backing roll 12 diameters is in the 0.05mm scope, yet such requirement is very harsh, be difficult to realize and will certainly increase roller consume, reduce service life.

In addition, for the cold straightener that is in slab production finishing zone, it is final plate shape control appliance, and its plate shape control ability will directly have influence on production board shape precision.And the plate shape control device of present roll leveller is mainly positive roller, laterally fascinates and three kinds of fore-and-aft tilts etc., lonitudinal warping that its controllable plate shape is a steel plate and limit wave (monolateral wave and symmetry or asymmetrical bilateral wave).But because this working roll 11 can produce due to certain amount of deflection when being subjected to relatively large aligning load, therefore the steel plate for wave in having then can't carry out leveling.

The utility model content

At the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of Wide and Thick Slab finishing straightener, and this straightener can guarantee effective contact condition of backing roll and working roll, helps the leveling of centering wave steel plate.

For achieving the above object, the utility model adopts following technical scheme:

This Wide and Thick Slab finishing straightener comprises that roller is framework, working roll, multistage backing roll and back-up chock, it is on the framework that working roll is located at roller, backing roll is located at respectively on the corresponding back-up chock, back-up chock is on the framework by being bolted to roller, this straightener also comprises adjusting device, and this adjusting device comprises adjusts backing plate and hydraulic cylinder, and it is between framework and the back-up chock that the adjustment backing plate is located at roller, hydraulic cylinder is articulated in adjusts backing plate one end, and with roller be that framework is hinged.

Described roller is to be respectively equipped with the inclined wedge-shaped groove with the corresponding section of back-up chock on framework one end face.

Described adjustment backing plate comprises several wedge plate and connecting plates, and the wedge plate is located at respectively in the inclined wedge-shaped groove, and offsets with back-up chock, fuses by connecting plate between the wedge plate.

Have waist-shaped hole on the described wedge plate, described back-up chock passes waist-shaped hole by bolt, and to be fixed on roller be on the framework, and also be provided with balancing spring on the bolt.

Described hydraulic cylinder one end also is connected with displacement transducer.

The roll shape of described backing roll is whole ellipse curve.

In technique scheme, Wide and Thick Slab finishing straightener of the present utility model comprises that roller is framework, working roll, multistage backing roll and back-up chock, this straightener also comprises an adjusting device, this adjusting device comprises adjusts backing plate and hydraulic cylinder, it is between framework and the back-up chock that the adjustment backing plate is located at roller, hydraulic cylinder is articulated in adjusts backing plate one end, and with roller be that framework is hinged.Promote the wedge plate by hydraulic cylinder and move, making roller is that framework compresses back-up chock, thereby guaranteeing that backing roll all has with working roll contact, and by changing the high and low position of backing roll, bends function thereby reach to bear, and helps the leveling of the unrestrained steel plate of centering.In addition, by the roll shape of elliptic curve, what can eliminate stress concentrates, and improves its service life.

Description of drawings

Fig. 1 is the structural representation of the Wide and Thick Slab finishing straightener of prior art;

Fig. 2 is the roll shape structural representation of backing roll of the straightener of prior art;

Fig. 3 is the structural representation of Wide and Thick Slab finishing straightener of the present utility model;

Fig. 4 is the A portion enlarged diagram among Fig. 3;

Fig. 5 is the structural representation of adjustment backing plate of the present utility model;

Fig. 6 is the roll shape structural representation of the backing roll of straightener of the present utility model;

Fig. 7 is the user mode schematic diagram of the adjustment backing plate of straightener of the present utility model.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

See also shown in Figure 3, Wide and Thick Slab finishing straightener 10 of the present utility model can be cold straightener, also can be thermal straightening machine, and its structure and prior art are basic identical, comprise that equally also roller is framework 23, working roll 21, multistage backing roll 22 and back-up chock 24, it is on the framework 23 that working roll 21 is located at roller, and backing roll 22 is located at respectively on the corresponding back-up chock 24, and it is on the framework 23 that back-up chock 24 is fixed on roller by bolt 25.Different is, this straightener 20 also comprises adjusting device 26, and the roller that this adjusting device 26 can only be installed in the top working roll 21 of this straightener 20 is in the framework 23, and the roller that can certainly be installed in the upper and lower working roll of this straightener 20 respectively is in the framework.Be the former shown in Fig. 3, and present embodiment is an example with the former all.This adjusting device 26 comprises adjusts backing plate 261 and hydraulic cylinder 262, it is between framework 23 and the back-up chock 24 that adjustment backing plate 261 is located at roller, hydraulic cylinder 262 is articulated in adjusts backing plate 261 1 ends, and with roller be that framework 23 is hinged, can promote to adjust backing plate 261 by hydraulic cylinder 262 and carry out move left and right.Please in conjunction with Fig. 4, shown in Figure 5, this roller is to be respectively equipped with inclined wedge-shaped groove 231 with the corresponding section of each back-up chock 24 on the lower surface of framework 23.Comprise several wedge plates 2611 and connecting plate 26122612 and adjust backing plate 261, several wedge plates 2611 are located at respectively in the corresponding inclined wedge-shaped groove 231, the upper surface of each wedge plate 2611 is a cammed surface, contact with 231 cooperations of inclined wedge-shaped groove, the bottom of wedge plate 2611 then offsets with back-up chock 24, and is in turn connected into one by connecting plate 2612 between all wedge plates 2611.Have waist-shaped hole 263 on the wedge plate 2611, back-up chock 24 passes waist-shaped hole 263 by bolt 25, and to be fixed on roller be on the framework 23, and also be provided with balancing spring 251 on the bolt 25, when adjustment backing plate 261 moves around, do not break away from back-up chock 24 upper ends to the both sides skew in order to guarantee wedge plate 2611.And also be connected with a displacement transducer 264 at the other end of hydraulic cylinder 262, be used to detect the adjustment displacement of hydraulic cylinder 262.In addition, for offset backing roll 22 flexural deformations and and working roll 21 between the suffered concentrated stress of contact flattening distortion, thereby guarantee its working roll 21 axially on the distortion at each position even, and the roller state that can adapt to different working roll 21 to the full extent, please in conjunction with shown in Figure 6, the roll design of the backing roll 22 of this straightener 20 is the ellipse curve b that is whole.This elliptic curve equation is:

$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$

In the formula, a is half of integrated curved width, and its value needs to determine according to concrete contact condition; B is half of roller footpath variable quantity, can optimize definite according to the diameter of backing roll 22 and the size and the width of length and contact stress.

Please in conjunction with Fig. 3, shown in Figure 7, the operation principle of the adjusting device 26 of straightener 20 of the present utility model is as follows: promote to adjust backing plate 261 by hydraulic cylinder 262 and be moved to the left, make all wedge plates 2611 be moved to the left simultaneously along wedge type groove 231, back-up chock 24 is subjected to downforce to become big gradually, thereby backing roll 22 is effectively contacted with working roll 21, and move to the high and low position that different positions can change backing roll 22 by wedge plate 2611, thereby the amount of deflection that can control working roll 21 changes, realize the just curved and negative curved function of single working roll 21, thereby effective leveling of unrestrained plate in can also being applicable to, increased the aligning scope of straightener 20 greatly, for enterprise has increased economic benefit.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (6)

1. Wide and Thick Slab finishing straightener, this straightener comprises that roller is framework, working roll, multistage backing roll and back-up chock, it is on the framework that working roll is located at roller, backing roll is located at respectively on the corresponding back-up chock, back-up chock is on the framework by being bolted to roller, it is characterized in that:

This straightener also comprises adjusting device, and this adjusting device comprises adjusts backing plate and hydraulic cylinder, and adjusting backing plate, to be located at roller be between framework and the back-up chock, and hydraulic cylinder is articulated in adjusts backing plate one end, and with roller be that framework is hinged.

2. Wide and Thick Slab finishing straightener as claimed in claim 1 is characterized in that:

Described roller is to be respectively equipped with the inclined wedge-shaped groove with the corresponding section of back-up chock on framework one end face.

3. Wide and Thick Slab finishing straightener as claimed in claim 2 is characterized in that:

Described adjustment backing plate comprises several wedge plate and connecting plates, and the wedge plate is located at respectively in the inclined wedge-shaped groove, and offsets with back-up chock, fuses by connecting plate between the wedge plate.

4. Wide and Thick Slab finishing straightener as claimed in claim 3 is characterized in that:

Have waist-shaped hole on the described wedge plate, described back-up chock passes waist-shaped hole by bolt, and to be fixed on roller be on the framework, and also be provided with balancing spring on the bolt.

5. Wide and Thick Slab finishing straightener as claimed in claim 1 is characterized in that:

Described hydraulic cylinder one end also is connected with displacement transducer.

6. Wide and Thick Slab finishing straightener as claimed in claim 1 is characterized in that:

The roll shape of described backing roll is whole ellipse curve.

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