CN101676042B - 12-roll and 20-roll rolling mills comprising replaceable roll systems and replacing method thereof - Google Patents
12-roll and 20-roll rolling mills comprising replaceable roll systems and replacing method thereof Download PDFInfo
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- CN101676042B CN101676042B CN2008102155834A CN200810215583A CN101676042B CN 101676042 B CN101676042 B CN 101676042B CN 2008102155834 A CN2008102155834 A CN 2008102155834A CN 200810215583 A CN200810215583 A CN 200810215583A CN 101676042 B CN101676042 B CN 101676042B
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Abstract
The invention intends to provide 12-roll and 20-roll rolling mills comprising replaceable roll systems, wherein, the roll box and the rolls of one roll system of the rolling mill can be easily taken out from a rack window, replaced by the roll box and the rolls of the other roll system of a different type, and the rolling mills with two types of roll systems share the same devices, such as the rack, the screw down device and the like; moreover, a 12-roll rolling mill and a 20-roll rolling mill can be in alternative service on the same rack, therefore, one production line is capable of producing products of various specifications with small equipment investment and high production efficiency. The invention further intends to provide a method for replacing rolls of the 12-roll and 20-roll rolling mills comprising the replaceable roll systems, wherein, the method is capable of dismounting and replacing 12-roll and 20-roll roll systems in an overall manner, so as to improve the productionefficiency and ensure that one production line is capable of producing products of various specifications.
Description
Technical field:
The present invention relates to the rolling equipment of a kind of metal plates and strips, particularly a kind of 12/20 roller roller is interchangeable rolling mill and exchange method thereof, belongs to the pressure processing field of metal material.
Background technology:
Multi-roll mill is with the working roll of its minor diameter, and big roller is a rigidity and well-known.According to relevant document introduction, stainless steel band and the difficult deformable metal band of the whole world more than 95% produced with multi-roll mill.
Main in the world multi-roll mill type has: U.S. Sendzimir type, Austrian Sundwig, German its common feature of Frhling type are the minor diameter working rolls, and its roller system arranges the production with the strip material that adapts to the different-thickness requirement with 1-2-3,1-2-3-4 tower respectively.And its outer backing cloth bearing roller 4 all uses saddle, eccentric bushing and mandrel to be installed in the quincunx bore hole on frame or the roller case.
This multiple roll machine roller box structure complexity that possesses saddle, eccentric bushing and bore hole.Particularly the back lining bearing group all relies on saddle and eccentric bushing to carry out roll spacing and roll gap gap adjustment.Repair demolition is very loaded down with trivial details when breaking down, for example U.S. Sendzimir milling train more the transducer set back lining bearing need 6～8 hours, and roller system can not integral replacing.This structure has increased the plant produced cost undoubtedly, and has finally reduced production efficiency.
To cause frame with the supporting back lining bearing all be the U-shaped or the O shape of hollow because the frame of existing multi-roll mill all adopts through-type bore hole that saddle is installed in addition, lost the coupling part in the middle of it, only rely on the tank material rigidity to suppress casing generation deformation, particularly casing shedding deformation.Can not exchange the roller case between the milling train that makes differential roller be, not possess combination property.General steel factory all will purchase two production lines with the changes in demand of reply market to product.Cause very big financial burden and capital burden to factory.
Summary of the invention:
Goal of the invention of the present invention is to provide a kind of 12/20 roller interchangeable rolling mill, roller case that a kind of roller of this rolling mill is and roll can take out from framework window easily be replaced by roller case and the roll that another kind of roller is, devices such as the public same frame of rolling mill of two kinds of roller systems, screwdown gear, and can be implemented in and be used alternatingly 12 rollers systems in the same frame and 20 rollers are rolling mill, one cover production line can be produced the product of different size, equipment drops into low, the production efficiency height.
The method that another object of the present invention is to provide the interchangeable rolling mill of 12/20 roller to change roll, this method can be fast to the whole methods that changes of 12 rollers and 20 rollers system, and enhancing productivity, and one overlaps the product that production line can be produced different size.
The present invention is achieved by the following technical solutions:
A kind of 12/20 roller is the interchangeable rolling mill, described 12 rollers system and 20 rollers are that rolling mill includes working roll, backing roll, back lining bearing, roller system is respectively 1-2-3 and 1-2-3-4 tower rollers system arranges, described working roll, backing roll, back lining bearing is symmetricly set on, in the lower roll case, on, the lower roll case is installed in the frame, frame and above and/or under be provided with between the roller case make above and/or under the roller case in framework window on, the screwdown gear that moves is characterized in that: described 12 down, 20 rollers are the working roll of rolling mill, backing roll and roller case and the back lining bearing that is connected thereof can not be arranged on simultaneously and become 12 rollers system in the same frame respectively or 20 rollers are rolling mill.
Like this, the shared same frame of rolling mill, screwdown gear and other the affiliated facility of two kinds of differential roller systems, be implemented in and be used alternatingly 12 rollers systems in the same frame and 20 rollers are rolling mill, article one, production line can be realized the function of two production lines at different time, produce the product of different size, equipment drops into low, the production efficiency height.
In order to satisfy 12 rollers system and 20 rollers is the exchange of rolling mill, require 12 rollers systems and 20 rollers be working roll, backing roll and the roller case of rolling mill and the back lining bearing that is connected thereof respectively can be from taking-up in the frame, pack into, and the size of the relevant position, inside of 12 roll roller casees and 20 roll roller case appearance and sizes and frame is complementary, for example 12 roll roller casees are close or identical with 20 roll roller case sizes, to realize exchange, if 12 roll roller casees and 20 roll roller case sizes have difference, can regulate by backing plate/liner plate, can in the window of frame, move to the roller case.
Above-mentioned 12/20 roller is the method that the interchangeable rolling mill exchanges, and comprises the steps:
A) adjust depress and/or the roll line adjusting device make its not the pair roller case apply power;
B) with 12 or 20 rollers be working roll, backing roll and the roller case of rolling mill and the back lining bearing that is connected thereof respectively or wholely in frame, take out;
C) with 20 or 12 rollers be working roll, backing roll and the roller case of rolling mill and the back lining bearing that is connected thereof respectively or integral body put into the frame of above-mentioned steps (1);
D) screwdown gear in the set-up procedure (1) is to the position that is fit to steel rolling.
12 roll roller casees of the present invention and 20 roll roller casees are independently casing of upper and lower two of separating, and back lining bearing is arranged in the casing.
Be respectively arranged with screwdown gear and roll line adjusting device between described frame and the roller case, between preferred lower roll case and the frame dozing device be set, the roll line adjusting device is set between top roll case and the frame.Described roll line adjusting device is hydraulic pressure, wedge or cushion block.The roll line adjusting device on the one hand can be adjusted roll line, can adjust the spacing between the up-down rollers case on the other hand, so that the spacing between the upper and lower roll case is even as big as adding roller case and roll and taking out.
The window middle part of frame is symmetrically arranged with the balance seat, this balance seat is arranged between the upper and lower roll case, described balance seat comprises at least four deadweights that independently overcome top roll case and back lining bearing, realize first hydraulic jack of overbalance, first hydraulic jack in the balance seat or on along direction setting to the lifting of top roll case direction.
Preferred described balance seat is four independently pedestals, is separately positioned on frame transmission side and fore side, the position of upper and lower roll case end.
The end with the contacted backing roll of back lining bearing of 12/20 roller system is provided with the boundling case that the roll with one deck is connected and does not influence roll rotation.It will be apparent to those skilled in the art, here with the contacted backing roll of back lining bearing be totally 6, each backing roll of 3 up and down for 20 rolled steel machines, be exactly its totally 4, each 2 backing roll up and down for 12 rolled steel machines.
Balance seat of the present invention also comprise four independently can to second hydraulic jack of the boundling case lifting of the contacted backing roll of back lining bearing, this each second hydraulic jack is arranged on the end with the boundling case of the contacted backing roll of back lining bearing, four independently second hydraulic jack be used for the boundling case of balance and the contacted backing roll of back lining bearing, make the boundling case can retrain position with the contacted backing roll of back lining bearing, can make backing roll again and the back lining bearing that is installed in the up-down rollers case closely contacts.
Said structure can have been realized the quick replacing of two kinds of rolls, realizes roll change apace for convenient, and the two ends of the upper and lower ground floor backing roll that contacts with working roll of preferred 20 rolled steel machines are respectively arranged with the boundling case.Obviously, this ground floor backing roll is totally 4, each backing roll of 2 up and down.After the two ends of this upper and lower ground floor backing roll are provided with the boundling case respectively, can once change two or 4 these ground floor backing rolls simultaneously.
The boundling case is connected and is the bearing block of one for identical with the roll number that is connected 2 or 3, and the boundling casees with the upper and lower ground floor backing roll working roll contact preferred 20 rolled steel machines are two bearing holder (housing, cover)s that pin or axle are connected.
For with frame in the space adapt, the two ends of the boundling case of top and the contacted backing roll of back lining bearing are divided other to extend outward one and are used for the end supported for second hydraulic jack.
Preferred described back lining bearing is directly installed on respectively in the upper and lower roll case by mandrel, described subdivision integrated roll box up and down.
Among the present invention, screwdown gear is arranged on the two ends of roller case, and the outside of screwdown gear working face is positioned at outside the working roll barrel length, makes roll-force act on the end of working roll.
The present invention's 12/20 roller is the method that the interchangeable rolling mill exchanges, the window middle part of the rolling mill frame in this method is symmetrically arranged with the balance seat, this balance seat is arranged on, between the lower roll case, described balance seat comprises at least four deadweights that independently overcome top roll case and back lining bearing, realize first hydraulic jack of overbalance, first hydraulic jack in the balance seat or on along direction setting to the lifting of top roll case direction, the end with the contacted backing roll of back lining bearing of described 12/20 roller system is provided with the boundling case that the roll with one deck is connected and does not influence roll rotation, the balance seat also comprise four independently can to second hydraulic jack of the boundling case lifting of the contacted backing roll of back lining bearing, this each second hydraulic jack is arranged on the end with the boundling case of the contacted backing roll of back lining bearing, four independently second hydraulic jack be used for the boundling case of balance and the contacted backing roll of back lining bearing, wherein
The method of 20 roller mills being replaced by 12 roller mills comprises the steps:
(1) the topping roll case and the second layer backing roll of 20 rolled steel machines lifted in first and second hydraulic jack action; Manually or adopt automatic roll change mechanism that the upper and lower ground floor backing roll of working roll and 20 rolled steel machines is pulled out in the window of frame;
The action of (2) first hydraulic jacks makes roller case and back lining bearing lift disengaging second layer backing roll; Second hydraulic jack shrinks, and last second layer backing roll drops on down on the second layer backing roll, and is manual or adopt automatic roll change mechanism to take out upper and lower second layer backing roll at the same time or separately;
(3) the I-shaped roll change support identical with four-high mill is set to support the top roll case on the lower roll case, after the withdrawal of first hydraulic jack disengages with the topping roll case, the top roll case relies on deadweight to drop on the I-shaped roll change support that is arranged on the lower roll case, at this moment upper and lower roll case and I-shaped roll change support integral body thereof can be pulled out from the window of frame;
(4) the upper and lower roll case that has back lining bearing respectively of 12 rolled steel machines is packed in the window of above-mentioned same frame;
(5) be arranged on first hydraulic jack action on the balance seat, the top roll case of 12 rolled steel machines is lifted, locatees;
(6) behind the top roll case location, the lower roll case of 12 rolled steel machines is pulled out again, upper and lower backing roll is placed on the lower roll case, push in the framework window together, and make second hydraulic jack on the balance seat on the frame be supported on the end of the boundling case of upper support roller, the upper support roller is lifted with back lining bearing contact;
(7) the upper support roller is lifted with after back lining bearing contacts the working roll of packing into;
(8) screwdown gear action, pre-pendulum roll gap after the upper and lower working roll contact zero clearing can be rolled production.
Perhaps, the method for 12 roller mills being replaced by 20 roller mills comprises the steps:
(1) the topping roll case and the backing roll of 12 rolled steel machines lifted in first and second hydraulic jack action, manually or adopt automatic roll change mechanism that working roll is pulled out in the window of frame;
(2) first hydraulic jacks actions makes roller case and back lining bearing lift the disengaging backing roll, and second hydraulic jack shrinks, and the upper support roller drops on the lower support roller, manually or adopt automatic roll change mechanism to take out upper and lower backing roll at the same time or separately.
(3) the I-shaped roll change support identical with four-high mill is set to support the top roll case on the lower roll case, after the withdrawal of first hydraulic jack disengages with the topping roll case, the top roll case relies on deadweight to drop on the special-purpose roll change support that is arranged on the lower roll case, at this moment upper and lower roll case and I-shaped roll change support integral body thereof can be pulled out from the window of frame;
(4) the top roll case that has back lining bearing of 20 rolled steel machines is fallen on the I-shaped roll change support that is arranged on the lower roll case, integral body pushes in the window of above-mentioned same frame, be arranged on first hydraulic jack action of balance seat, the topping roll case of 20 rolled steel machines is lifted, locatees;
(5) behind the top roll case location, the lower roll case of 20 rolled steel machines is pulled out again, upper and lower second layer backing roll is placed on the lower roll case, pushes in the framework window together, and makes second hydraulic jack of balance seat on the frame be supported on the end of the boundling case of second layer backing roll;
(6) second hydraulic jacks actions will be gone up second layer backing roll and be lifted with back lining bearing and contact, with ground floor backing roll and upper and lower working roll, perhaps respectively ground floor backing roll and upper and lower working roll be packed between the upper and lower second layer support.
(7) screwdown gear action, pre-pendulum roll gap after the upper and lower working roll contact zero clearing can be rolled production.
Before the beginning roll change, stop steel rolling operation usually, and adjust depress and/or the roll line adjusting device make its not the pair roller case apply power, and help enlarging the spacing between the up-down rollers case.
The present invention makes the rolling mill of two kinds of differential roller systems replace shared same frame, screwdown gear and other affiliated facility, be implemented in and be used alternatingly 12 rollers systems in the same frame and 20 rollers are rolling mill, article one, production line can be realized the function of two production lines at different time, produce the product of different size, equipment drops into low, the production efficiency height.The present invention increases the boundling case by the both sides of the backing roll in the roller case, makes the whole location of backing roll at the same level.And in frame, set up the balance seat that has the two-stage hydraulic cylinder, thus changed in the past suspension arrangement at backing roll, by the boundling case location of backing roll is prevented backing roll landing in dismounting and installation process.Because in the location of creel and hydraulic jack, thoroughly having changed in the past needs independent every backing roll to hang the labyrinth of location and the workflow of dismantling separately in the unloading process.20 roller mills after the improvement can be realized the integral elevating of backing roll at the same level is made dismounting and replacing, and more simple and fast has reduced the take-down time in the maintenance process.In the prior art dismounting standard time of tower 20 roller mills was needed more than 8 hours, and the milling train after improving only need be less than whole replacings that just can realize backing roll and working roll in 30 minutes.
Roll-box of the present invention is two integrated roll boxes of upper and lower subdivision, rather than the common several piece splicing construction that adopts of prior art; 8 groups of back lining bearings are directly installed on respectively by mandrel simultaneously, on two integrated roll boxes of following subdivision, different with the CN200610046656.2 that mentions in the background technology, the present invention is directly installed on back lining bearing respectively by mandrel, on two integrated roll boxes of following subdivision, this structure need not saddle, therefore, do not have the through hole that destroys roller case rigid structure on the roller case, the employing of said structure, make roll-box good rigidly of the present invention, cost is low, and integrated roll box has better warp resistance morphotropism, adopt equipment of the present invention, can access smooth high-quality strip material.
Describe the present invention in detail below in conjunction with the drawings and specific embodiments.
Description of drawings:
1, Fig. 1 is the left view of two kinds of roller systems of the present invention;
2, Fig. 2 is 20 roll structure schematic diagrames among Fig. 1;
3, Fig. 3 is 12 roll structure schematic diagrames among Fig. 1;
4, Fig. 4 is the schematic perspective view of split type roller case 6 up and down among Fig. 1;
5, Fig. 5 is up and down split type roller case and rack construction figure among Fig. 1;
6, Fig. 6 is that 12 rollers are roller case cut-away view;
7, Fig. 7 is that 20 rollers are roller case cut-away view;
8, Fig. 8 is boundling tank mounting structure figure;
9, Fig. 9 is 12 roller boundling tank mounting structure figure;
10, Figure 10 is the quincunx bore hole roller of traditional 20 a roller mills box structure schematic diagram.
11, Figure 11 is 20 roller mill boundling case scheme of installations.
The specific embodiment:
Further set forth below in conjunction with accompanying drawing:
Fig. 1 is back lining bearing 4 structures and casing 6 structural representations among the present invention, comprises mandrel 5 and is arranged on a plurality of back lining bearings 4 on the mandrel, and each all is installed in this back lining bearing in the groove of split type roller case 6 up and down accordingly.
Fig. 2 and Fig. 3 have showed that 12/20 roller interchangeable rolling mill of the present invention exchanges the schematic diagram of front and back.12 roll roller casees and 20 roll roller casees 6 are independently casing of upper and lower two of separating, and back lining bearing 4 is arranged in roller case 6 casings.
Fig. 2 is 20 roller mill schematic diagrames.As shown in the figure, its roller is that the 1-2-3-4 turriform is arranged, comprise two minor diameter working rolls 1,3,8 groups of back lining bearings 4 of 2,6 second layer backing rolls of 4 ground floor backing rolls are installed on the upper and lower roll case 6, upper and lower roll case 6 is installed in the window of frame 7, roll line adjusting device 9 is installed between the top and frame top of top roll case 6, and screwdown gear 8 is installed between lower roll case 6 and the frame bottom, is used to apply roll-force roller case 6 is moved up and down in frame 7.Also can be with the position and depress oil cylinder 8 location swaps of roll line adjusting device 9.
Fig. 3 is changed to the schematic diagram of 12 roller rollers system for the 20 roller rollers system of Fig. 2.As shown in the figure, exchanging its roller of back is that the 1-2-3 turriform is arranged, comprise that 3,6 groups of back lining bearings 4 of 1,4 backing roll of symmetrically arranged two minor diameter working rolls are installed on the upper and lower roll case 6, upper and lower roll case 6 is installed in the window of same frame 7 shown in Figure 2.
Among Fig. 3, except that roller system and roller case, all the other structures all 20 rolled steel machines with shown in Figure 2 are identical, are installed in as screwdown gear 8 between the bottom and frame 7 bottoms of lower roll case 6, be used to apply thrust roller case 6 is moved up and down in frame 7.Equally also can look like the Installation Modes of 20 roller mills with screwdown gear and roll line adjusting device transposition.
Fig. 2 and Fig. 3 can be 12 of prior art, 20 rollers are rolling mill, as long as its satisfy split type on, the lower roll case, the roller case can take out in frame 7, pack into and get final product, and will realize exchanging, 20 rollers that then require the 12 rollers system of Fig. 3 and Fig. 2 are that the size of the relevant position, inside of roller case 6 appearance and sizes of rolling mill and frame 7 is complementary, as Fig. 3,2 12 roller roller casees are close or identical with 20 roller roller case sizes, if 12 roller roller casees and 20 roller roller case sizes have difference, can regulate by backing plate/liner plate (not shown), can in the window of frame, move to the roller case.
The window middle part of frame is symmetrically arranged with balance seat 12, balance seat 12 is installed on the middle part of column of frame 7, this balance seat is arranged between the upper and lower roll case 6, preferred described balance seat 12 is four independently pedestals, be separately positioned on frame 7 transmission sides and fore side, the position of upper and lower roll case 6 ends.Transmission side is the input side of milling train rear portion transmission mechanism, and fore side is a side of the anterior workman's production operation of milling train, as Fig. 1.Balance seat 12 can support top roll case 6, overcome the deadweight of top roll case 6 and back lining bearing 4, realize overbalance, particularly during roll change, when the power that puts on the roller case is removed in screwdown gear 8 actions, support top roll case 6 by balance seat 12, can respectively working roll, backing roll be taken out, also need the support of balance seat 12 when packing roller case and roll into.
Be respectively arranged with screwdown gear 8 and roll line adjusting device 9 between described frame of the present invention and the roller case, between preferred lower roll case 6 and frame 7 bottoms screwdown gear 8 is set, to apply the power of pushing to lower roll case 6, between top roll case 6 and frame 7 tops roll line adjusting device 9 is set, distance between roll change or when maintenance easier adjustment up-down rollers case 6 like this is so that form bigger operating space.
Described roll line adjusting device 9 is hydraulic pressure, wedge or cushion block.Roll line adjusting device 9 can be adjusted roll line on the one hand, can adjust the spacing between the upper and lower roll case 6 on the other hand, so that the spacing between the upper and lower roll case is even as big as packing roller case 6 and roll into and taking out.
Screwdown gear or dozing device 8 are installed in the two ends of top, the working roll 1 of the following of lower roll case 6 or top roll case 6, can exert pressure at the two ends of working roll 1 like this, and be the little parabola pass of a sealing to guarantee its rolling deformation district.
Being replaced by 12 rolled steel machines with 20 rolled steel machines is example, during exchange, adds the I-shaped roll change support identical with four-high mill between up-down rollers case 6, and this support also can be cushion block, hydraulic means or other bracing or strutting arrangements.The pressure that is applied on the roller case is removed in screwdown gear 8 actions, 9 actions of roll line adjusting device, increase the distance between the roller case 6, roll change stent support up-down rollers case, after working roll 1, backing roll 2,3 taking-ups, the up-down rollers case 6 that can at the same time or separately 20 rollers be equipped with back lining bearing 4 takes out; The window of the same frame 7 of above-mentioned 20 rolled steel machines will be put into the roll change stent support between the upper and lower roll case 6 that have back lining bearing of 12 rolled steel machines, and top roll case 6 lifted, then backing roll and working roll 1 are put between the roller case 6, adjusted the screwdown gear of above-mentioned 12 rolled steel machines and roll line adjusting device position to steel rolling.
The driven roller of 12 rolled steel machines is two backing rolls, and the driven roller of 20 rolled steel machines is two outside rollers of second layer backing roll 3, driven roller is connected by same set of universal-joint spindle can carry out the rolling of strip material.Need not it changes other parts and is about to one 20 or 12 rolled steel machine production lines and is replaced by 12 or 20 rolled steel machine production lines.
12 rolled steel machines are replaced by 20 rolled steel machines can be with reference to said process.
In the preferred embodiment of the present invention, the window middle part of frame is symmetrically arranged with balance seat 12, this balance seat is arranged between the upper and lower roll case 6, described balance seat 12 comprise at least four independently first hydraulic jack, 15, the first hydraulic jacks 15 in the balance seat or on along direction setting to the lifting of top roll case direction.First hydraulic jack 15 lifts and supports top roll case 6, to overcome the deadweight of top roll case 6 and back lining bearing 4, realizes overbalance.
For install, replacing and easy to maintenance, Fig. 1 has illustrated the end with the contacted backing roll 3 of back lining bearing of 12 or 20 rollers systems to be provided with the roll with one deck is connected and has not influenced the boundling case 10 of roll rotation.The setting of boundling case 10 can be once taken out the backing roll with one deck or is packed big time saver into.
Further, the end with the contacted ground floor backing roll 2 of working roll of 20 rollers systems also is provided with the boundling case 13. that the roll with one deck is connected and does not influence roll rotation among Fig. 8
The boundling case is connected and is the bearing block of one for identical with the roll number that is connected 2 or 3.The end of every layer of ground floor backing roll 2 is arranged in the axle sleeve of bearing block of this layer boundling case 13.Because each only has two rollers to ground floor backing roll 2 up and down, two bearing holder (housing, cover)s that can adopt simple pin or axle to connect.Both can be with two 2 ground floor backing rolls, 2 location with one deck, the rotation of backing roll 2 when also not influencing its strips or plates when maintenance or dismounting roll change, can once be taken out 2 ground floor backing rolls 2 simultaneously, and big time saver is raised the efficiency.
The bottom of frame 7 is provided with lower roll case slide rail 17, lower roll case slide rail 17 is used for supporting lower roll case 6 and lower roll case 67 is withdrawn from along it from frame, first hydraulic jack 16 by the balance seat when top roll case 6 is flat holds up, contact with screwdown gear or roll line guiding mechanism, working as balance seat first hydraulic jack 16 when maintenance shrinks fully, top roll case 6 just drops on above the special-purpose roll change support that is arranged on the lower roll case, at this moment just the upper and lower roll case can be withdrawn from along slide rail 17 from frame simultaneously.
Second layer backing roll 3 is provided with the boundling case, further being provided with four on balance seat 12 independently can be to second hydraulic jack 15 of the boundling case lifting of second layer backing roll, this each second hydraulic jack is arranged on the end of the boundling case of second layer backing roll 3, four independently second hydraulic jack 15 be used for the boundling case 10 of balance second layer backing roll 3, make boundling case 10 can retrain the position of second layer backing roll, the back lining bearing 4 in making backing roll 3 again and being installed in the up-down rollers case closely contacts.The effect of second hydraulic jack 15 is, the deadweight except the backing roll of the second layer backing roll that overcomes 20 rolled steel machines or balance 12 rolled steel machines also has abundant thrust to realize the roller of the second layer backing roll and the 12 rolled steel machine backing rolls of 20 rolled steel machines.
Because the width of upper and lower second layer backing roll 3 and take up space are less than the width of roller case and back lining bearing, the two ends of upper and lower second layer backing roll boundling case 10 divide other to extend outward an end that is used for for the support of second hydraulic jack.Perhaps the casing both sides are provided with two outstanding support arms 14, and support arm 14 is used for supporting for second hydraulic jack.Boundling case 10 is supported on second hydraulic jack 15 of balance seat 12 by the support arm 14 that is arranged on its both sides.When first compressing cylinder 16 of balance seat 13 lifted top roll case 6, the beginning of second hydraulic jack 15 is oil-filled lifted boundling case 10.This moment, the second backing roll group 3 was elevated, and the convenient first backing roll group 2 is pulled out, and working roll 1 is withdrawn from separately.
The set-up mode of two hydraulic jacks 15,16 can be multiple on each balance seat 12, preferably the cross section direction along roll distributes, for example the same horizontal level at balance seat 12 is provided with two hydraulic jacks, also balance seat 12 can be designed to staircase structural model, two hydraulic jacks be separately positioned on two differing heights steps interior/on.
The method that 20 roller mills are replaced by 12 roller mills of the present invention is:
(1) the topping roll case and the second layer backing roll of 20 rolled steel machines lifted in the action of first and second hydraulic jack on the balance seat; Manually or adopt automatic roll change mechanism that the upper and lower ground floor backing roll of working roll and 20 rolled steel machines is pulled out in the window of frame;
(2) action of first hydraulic jack on the balance seat makes roller case and back lining bearing lift disengaging second layer backing roll; Second hydraulic jack shrinks, and last second layer backing roll drops on down on the second layer backing roll, and is manual or adopt automatic roll change mechanism to take out upper and lower second layer backing roll at the same time or separately;
(3) the I-shaped roll change support identical with four-high mill is set to support the top roll case on the lower roll case, after the withdrawal of first hydraulic jack disengages with the topping roll case, the top roll case relies on deadweight to drop on the I-shaped roll change support that is arranged on the lower roll case, at this moment upper and lower roll case and I-shaped roll change support integral body thereof can be pulled out from the window of frame;
(4) the upper and lower roll case that has back lining bearing respectively of 12 rolled steel machines is packed in the window of above-mentioned same frame;
(5) be arranged on first hydraulic jack action on the balance seat, the top roll case of 12 rolled steel machines is lifted, locatees;
(6) behind the top roll case location, the lower roll case of 12 rolled steel machines is pulled out again, upper and lower backing roll is placed on the lower roll case, push in the framework window together, and make second hydraulic jack on the balance seat on the frame be supported on the end of the boundling case of upper support roller, the upper support roller is lifted with back lining bearing contact;
(7) the upper support roller is lifted with after back lining bearing contacts the working roll of packing into;
(8) screwdown gear action, pre-pendulum roll gap after the upper and lower working roll contact zero clearing can be rolled production.
Perhaps, the method for 12 roller mills being replaced by 20 roller mills comprises the steps:
(1) the topping roll case and the backing roll of 12 rolled steel machines lifted in the action of first and second hydraulic jack on the balance seat, manually or adopt automatic roll change mechanism that working roll is pulled out in the window of frame;
(2) first hydraulic jack on balance seat action makes roller case and back lining bearing lift the disengaging backing roll, and second hydraulic jack shrinks, and the upper support roller drops on the lower support roller, manually or adopt automatic roll change mechanism to take out upper and lower backing roll at the same time or separately.
(3) the I-shaped roll change support identical with four-high mill is set to support the top roll case on the lower roll case, after the withdrawal of first hydraulic jack disengages with the topping roll case, the top roll case relies on deadweight to drop on the special-purpose roll change support that is arranged on the lower roll case, at this moment upper and lower roll case and I-shaped roll change support integral body thereof can be pulled out from the window of frame;
(4) the top roll case that has back lining bearing of 20 rolled steel machines is fallen on the I-shaped roll change support that is arranged on the lower roll case, integral body pushes in the window of above-mentioned same frame, be arranged on first hydraulic jack action of balance seat, the topping roll case of 20 rolled steel machines is lifted, locatees;
(5) behind the top roll case location, the lower roll case of 20 rolled steel machines is pulled out again, upper and lower second layer backing roll is placed on the lower roll case, pushes in the framework window together, and makes second hydraulic jack of balance seat on the frame be supported on the end of the boundling case of second layer backing roll;
(6) second hydraulic jacks actions will be gone up second layer backing roll and be lifted with back lining bearing and contact, with ground floor backing roll and upper and lower working roll, perhaps respectively ground floor backing roll and upper and lower working roll be packed between the upper and lower second layer support.
(7) screwdown gear action, pre-pendulum roll gap after the upper and lower working roll contact zero clearing can be rolled production.
Like this in roll exchange and maintenance process, second hydraulic jack lifts and the working roll and the backing roll of 12 rolled steel machines can be disengaged, perhaps the ground floor backing roll of 20 rolled steel machines and second layer backing roll break away from, and need not to overcome other external force and just can or pack into the working roll and the taking-up of ground floor backing roll of the working roll of 12 rollers system or 20 rollers system.First hydraulic jack lifts, and the back lining bearing on second layer backing roll and the roller case is broken away from, and directly second layer backing roll is taken out or packs into.
Before the beginning roll change, stop steel rolling operation usually, and adjust depress and/or the roll line adjusting device make its not the pair roller case apply power, and help enlarging the spacing between the up-down rollers case.
Particularly between lower roll case and frame dozing device is set, when the roll line adjusting device was set between top roll case and the frame, the setting of above-mentioned boundling case and hydraulic jack can be shifted out in frame by convenient roll.Fig. 4 and Fig. 6, Fig. 7 are central roll back lining bearing 4 structures of the present invention and body structure schematic diagram, comprise the mandrel that is installed in the roller case 65 and be arranged on a plurality of back lining bearings 4 on the mandrel 5 that each all is installed in this back lining bearing in the semi-circular recesses of split type roller case 6 up and down accordingly.This semi-circular recesses relies on dividing plate each other to separate, as Fig. 6, shown in Figure 7, in process, take the independent boring system of each groove, thereby in casing, kept horizontal tension stress dividing plate, roller case after this method processing is two integrated roll boxes of upper and lower subdivision, as shown in Figure 4, the roller case that processes than penetrability boring process has higher horizontal ability of anti-deformation, compact conformation, in light weight, good rigidly.The present invention is installed in back lining bearing and has in the dividing plate casing at interval by non-penetrability boring process, and dividing plate has played the beam action of horizontal tension therein.The own lateral stiffness of roller case after the processing is improved greatly, greatly reduce milling train weight and reduce manufacturing cost.
Claims (12)
1. a roller is the interchangeable rolling mill, described 12 rollers system and 20 rollers are that rolling mill includes working roll, backing roll, back lining bearing, roller system is respectively 1-2-3 and 1-2-3-4 tower rollers system arranges, described working roll, backing roll, back lining bearing is symmetricly set on, in the lower roll case, on, the lower roll case is installed in the frame, frame and above and/or under be provided with between the roller case make above and/or under the roller case in framework window on, the screwdown gear that moves is characterized in that: described 12 down, 20 rollers are the working roll of rolling mill, backing roll and roller case and the back lining bearing that is connected thereof can not be arranged on simultaneously and become 12 rollers system in the same frame respectively or 20 rollers are rolling mill.
2. a kind of 12/20 roller according to claim 1 is the interchangeable rolling mill, be respectively arranged with between described frame and the roller case and depress and the roll line adjusting device, wherein between lower roll case and the frame screwdown gear is set, the roll line adjusting device is set between top roll case and the frame.
3. 12/20 roller according to claim 1 is the interchangeable rolling mill, the window middle part that it is characterized in that frame is symmetrically arranged with the balance seat, this balance seat is arranged between the upper and lower roll case, described balance seat comprises at least four deadweights that independently overcome top roll case and back lining bearing, realize first hydraulic jack of overbalance, first hydraulic jack in the balance seat or on along direction setting to the lifting of top roll case direction.
4. a kind of 12/20 roller according to claim 3 is the interchangeable rolling mill, and the end with the contacted backing roll of back lining bearing that it is characterized in that described 12/20 roller system is provided with the boundling case that the roll with one deck is connected and does not influence roll rotation.
5. a kind of 12/20 roller according to claim 4 is the interchangeable rolling mill, it is characterized in that the balance seat also comprise four independently can to second hydraulic jack of the boundling case lifting of the contacted backing roll of back lining bearing, this each second hydraulic jack is arranged on the end with the boundling case of the contacted backing roll of back lining bearing, four independently second hydraulic jack be used for the boundling case of balance and the contacted backing roll of back lining bearing, make the boundling case can retrain position with the contacted backing roll of back lining bearing, can make backing roll again and the back lining bearing that is installed in the up-down rollers case closely contacts.
6. a kind of 12/20 roller according to claim 1 is the interchangeable rolling mill, it is characterized in that the two ends of the upper and lower ground floor backing roll that contacts with working roll of 20 rolled steel machines are respectively arranged with the boundling case.
7. a kind of 12/20 roller according to claim 5 is the interchangeable rolling mill, it is characterized in that described boundling case is connected and is the bearing block of one for identical with the roll number that is connected 2 or 3, the boundling casees with the upper and lower ground floor backing roll working roll contact described 20 rolled steel machines are two bearing holder (housing, cover)s that pin or axle are connected.
8. a kind of 12/20 roller according to claim 5 is the interchangeable rolling mill, it is characterized in that described boundling case is and the identical bearing block of roll number that is connected, the two ends of the boundling case of top and the contacted backing roll of back lining bearing divide other to extend outward an end that is used for for the support of second hydraulic jack.
9. a kind of 12/20 roller according to claim 1 is the interchangeable rolling mill, it is characterized in that described back lining bearing is directly installed on respectively in the upper and lower roll case by mandrel.
10. a kind of 12/20 roller according to claim 1 is the interchangeable rolling mill, it is characterized in that described screwdown gear is arranged on the two ends of roller case, the outside of screwdown gear working face is positioned at outside working roll (1) barrel length, makes roll-force act on the end of working roll.
11. any one described a kind of 12/20 roller of claim 5-10 is the method that the interchangeable rolling mill exchanges, this method described 12 rollers system and 20 rollers are that rolling mill includes working roll, backing roll, back lining bearing, roller system is respectively 1-2-3 and 1-2-3-4 tower rollers system arranges, described working roll, backing roll, back lining bearing is symmetricly set on, in the lower roll case, on, the lower roll case is installed in the frame, frame and above and/or under be provided with between the roller case make above and/or under the roller case in framework window on, mobile down screwdown gear, it is characterized in that described method comprises the steps:
A) adjust screwdown gear make its not the pair roller case apply power;
B) with 12 or 20 rollers be working roll, backing roll and the roller case of rolling mill and the back lining bearing that is connected thereof respectively or wholely in frame, take out;
C) with 20 or 12 rollers be working roll, backing roll and the roller case of rolling mill and the back lining bearing that is connected thereof respectively or the whole frame of putting into above-mentioned steps a;
D) screwdown gear among the set-up procedure a is to the position that is fit to steel rolling.
12. according to described 12/20 roller of claim 11 is the method that the interchangeable rolling mill exchanges, it is characterized in that: the window middle part of frame is symmetrically arranged with the balance seat, this balance seat is arranged on, between the lower roll case, described balance seat comprises at least four deadweights that independently overcome top roll case and back lining bearing, realize first hydraulic jack of overbalance, first hydraulic jack in the balance seat or on along direction setting to the lifting of top roll case direction, the end with the contacted backing roll of back lining bearing of described 12/20 roller system is provided with the boundling case that the roll with one deck is connected and does not influence roll rotation, the balance seat also comprise four independently can to second hydraulic jack of the boundling case lifting of the contacted backing roll of back lining bearing, this each second hydraulic jack is arranged on the end with the boundling case of the contacted backing roll of back lining bearing, four independently second hydraulic jack be used for the boundling case of balance and the contacted backing roll of back lining bearing, it is characterized in that: the method for 20 roller mills being replaced by 12 roller mills comprises the steps:
(1) first and second hydraulic jack action is with the topping roll case of 20 rolled steel machines with second layer backing roll lifts manually or adopt automatic roll change mechanism that the upper and lower ground floor backing roll of working roll and 20 rolled steel machines is pulled out in the window of frame;
The action of (2) first hydraulic jacks makes roller case and back lining bearing lift disengaging second layer backing roll; Second hydraulic jack shrinks, and last second layer backing roll drops on down on the second layer backing roll, and is manual or adopt automatic roll change mechanism to take out upper and lower second layer backing roll at the same time or separately:
(3) the I-shaped roll change support identical with four-high mill is set to support the top roll case on the lower roll case, after the withdrawal of first hydraulic jack disengages with the topping roll case, the top roll case relies on deadweight to drop on the I-shaped roll change support that is arranged on the lower roll case, at this moment is about to upper and lower roll case and I-shaped roll change support integral body thereof and pulls out from the window of frame;
(4) the upper and lower roll case that has back lining bearing respectively of 12 rolled steel machines is packed in the window of above-mentioned same frame;
(5) be arranged on first hydraulic jack action on the balance seat, the top roll case of 12 rolled steel machines is lifted, locatees;
(6) behind the top roll case location, the lower roll case of 12 rolled steel machines is pulled out again, upper and lower backing roll is placed on the lower roll case, push in the framework window together, and make second hydraulic jack on the balance seat on the frame be supported on the end of the boundling case of upper support roller, the upper support roller is lifted with back lining bearing contact;
(7) the upper support roller is lifted with after back lining bearing contacts the working roll of packing into;
(8) screwdown gear action, pre-pendulum roll gap after the upper and lower working roll contact zero clearing can be rolled production; Perhaps, the method for 12 roller mills being replaced by 20 roller mills comprises the steps:
(1) the topping roll case and the backing roll of 12 rolled steel machines lifted in first and second hydraulic jack action, manually or adopt automatic roll change mechanism that working roll is pulled out in the window of frame;
(2) first hydraulic jacks actions makes roller case and back lining bearing lift the disengaging backing roll, and second hydraulic jack shrinks, and the upper support roller drops on the lower support roller, manually or adopt automatic roll change mechanism to take out upper and lower backing roll at the same time or separately;
(3) the I-shaped roll change support identical with four-high mill is set to support the top roll case on the lower roll case, after the withdrawal of first hydraulic jack disengages with the topping roll case, the top roll case relies on deadweight to drop on the special-purpose roll change support that is arranged on the lower roll case, at this moment is about to upper and lower roll case and I-shaped roll change support integral body thereof and pulls out from the window of frame;
(4) the top roll case that has back lining bearing of 20 rolled steel machines is fallen on the I-shaped roll change support that is arranged on the lower roll case, integral body pushes in the window of above-mentioned same frame, be arranged on first hydraulic jack action of balance seat, the topping roll case of 20 rolled steel machines is lifted, locatees;
(5) behind the top roll case location, the lower roll case of 20 rolled steel machines is pulled out again, upper and lower second layer backing roll is placed on the lower roll case, pushes in the framework window together, and makes second hydraulic jack of balance seat on the frame be supported on the end of the boundling case of second layer backing roll;
(6) second hydraulic jacks actions will be gone up second layer backing roll and be lifted with back lining bearing and contact, with ground floor backing roll and upper and lower working roll, perhaps respectively ground floor backing roll and upper and lower working roll be packed between the upper and lower second layer support;
(7) screwdown gear action, pre-pendulum roll gap after the upper and lower working roll contact zero clearing can be rolled production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102155834A CN101676042B (en) | 2008-09-16 | 2008-09-16 | 12-roll and 20-roll rolling mills comprising replaceable roll systems and replacing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102155834A CN101676042B (en) | 2008-09-16 | 2008-09-16 | 12-roll and 20-roll rolling mills comprising replaceable roll systems and replacing method thereof |
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| Publication Number | Publication Date |
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| CN101676042A CN101676042A (en) | 2010-03-24 |
| CN101676042B true CN101676042B (en) | 2011-08-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303045B (en) * | 2011-09-22 | 2013-05-29 | 燕山大学 | Four-roller and six-roller exchangeable rolling mill |
| CN104209317B (en) * | 2013-05-31 | 2016-12-28 | 汉威广园(广州)机械设备有限公司 | A kind of high-speed rod-rolling mill group |
| DE102019220327A1 (en) * | 2019-12-20 | 2021-06-24 | Sms Group Gmbh | Method for changing a roll configuration in a roll stand and roll arrangement |
| CN112264467A (en) * | 2020-09-30 | 2021-01-26 | 一重集团大连工程技术有限公司 | Process equipment for replacing working roll of finishing mill on line on short-process production line |
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| CN1253047A (en) * | 1998-10-30 | 2000-05-17 | 国际技术公司及国际技术公开有限公司 | Rolling mill seat capable of being taken apart into interchangeable modules |
| DE10116988A1 (en) * | 2001-04-05 | 2002-10-10 | Sms Demag Ag | Rolling mill stand comprises devices for lifting and/or lowering intermediate roller rails and/or working roller rails during roller exchange comprising balancing crosspieces coupled to the roller rails |
| CN2757951Y (en) * | 2004-07-09 | 2006-02-15 | 钱钢 | Roller series structure for multi roller cold mill |
| CN2894879Y (en) * | 2006-05-24 | 2007-05-02 | 曹全有 | Integral-housing split-roll-box multi-roll mill |
| CN201308905Y (en) * | 2008-09-17 | 2009-09-16 | 王宇 | 12/20 roller system interchangeable rolling mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253047A (en) * | 1998-10-30 | 2000-05-17 | 国际技术公司及国际技术公开有限公司 | Rolling mill seat capable of being taken apart into interchangeable modules |
| DE10116988A1 (en) * | 2001-04-05 | 2002-10-10 | Sms Demag Ag | Rolling mill stand comprises devices for lifting and/or lowering intermediate roller rails and/or working roller rails during roller exchange comprising balancing crosspieces coupled to the roller rails |
| CN2757951Y (en) * | 2004-07-09 | 2006-02-15 | 钱钢 | Roller series structure for multi roller cold mill |
| CN2894879Y (en) * | 2006-05-24 | 2007-05-02 | 曹全有 | Integral-housing split-roll-box multi-roll mill |
| CN201308905Y (en) * | 2008-09-17 | 2009-09-16 | 王宇 | 12/20 roller system interchangeable rolling mill |
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| CN101676042A (en) | 2010-03-24 |
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Assignee: Beijing Steele Luo Lin Technology Development Co., Ltd. Assignor: Wang Yu| Qian Gang Contract record no.: 2011990000647 Denomination of invention: 12/20 roll system interchangeable rolling mill and exchange method thereof License type: Exclusive License Open date: 20100324 Record date: 20110715 |