CN106670239B - A kind of composite balancing device of stiff mill - Google Patents

Abstract

The invention discloses a kind of composite balancing device of stiff mill, including main bearing seat, the main bearing seat both ends are respectively equipped with fore side and transmission side, and roller system is additionally provided on the main bearing seat, and the roller system is set between the fore side and transmission side；The operation side stand for being used to support roller system is equipped in the fore side, the operation side stand is equipped with plunger type dish complex spring group；The transmission side is equipped with auxiliary bearing, and the auxiliary bearing is equipped with the plunger type dish complex spring group；The plunger type dish complex spring group includes plunger and several disk springs being sequentially overlapped, and the centre of several disk springs is equipped with through-hole, and the plunger is inserted into the through-hole.

Description

A kind of composite balancing device of stiff mill

Technical field

The invention belongs to mill balancing systems technology fields, and in particular to a kind of composite balancing device of stiff mill.

Background technique

All finishers of steel mill and mm finishing mill unit are both at home and abroad in order to improve the precision of its mill product at present, usually all The rolling equipment of high rigidity is taken, such as currently a popular all kinds of short stress rolling mills.Stress part when its common feature is rolling Few as far as possible, the path in institute's stress circuit is short as far as possible, and some independent balance systems are added at working roll system bearing and pull rod rack It unites to eliminate the secondary excessive drive motion gap of stress part in the operation of rolling, the mistake of influence of rolled product quality is reduced with this Steel rider jump value improves non-deformability and enhancing equipment rigidity when its stress, to keep workpiece measurement precision, the gabarit of production Type shape is stablized.Specific means has what balancing device in all kinds of short stress rolling mills selected to have：Attached cylindrical helical spring shown in FIG. 1 It is balanced structure, attached butterfly complex spring group structure shown in Fig. 2, attached hydraulic cylinder balanced structure shown in Fig. 3, attached shown in Fig. 4 Plunger type elastic damping structure and the dish-like elastic colloid structure of attached butterfly shown in fig. 5.

Referring to shown in attached drawing 6, to there is the structural schematic diagram in gap in milling train use in the prior art.In general, rolling In equipment, rack balance mechanism is also referred to as the backlash eliminating equipment of pressure, pull rod（That is the pressure spiral shell of tradition row mill rack receiving roll-force The gap of secondary, the short stress rack pull rod screw pair of silk）.

Due to influence of rolled finished product accuracy（That is roller jump value）Have following factor；（1）Bear roll-force pull rod screw Secondary gap width.（2）The forming roller system work garden Shi Silieduan axis of a cylinder holds standard radial clearance value when factory（In order to run well Value as defined in standard）.（3）All elastic properties of materials for bearing roll-force part（It can not eliminate）Deformation values.It is all of above similar No matter short stress rack uses the gap processing that disappears which kind of balance method carries out stressed member, all just between metal (upper seat Connection screw rod and main nut between remained additional with roll-force equilibrant force in the same direction（It is equidirectional slightly larger than rolling with roll-force Roller self weight）, that is, formed to screw thread pair be applied with it is certain preload, ensure that between the part part time job face can gapless always Contact, here it is such type, they, which all have, common superior improves the spy of mill product precision to balance screw thread auxiliary air gap Sign, to obtain the extensive use of current steel mill.But for influence factor（2）The reason of, current technology is all ignored again Its running clearance is permanently present when mill product, it at work will cause product quality and equipment even running Tremendous influence, that is, four garden the Lie Duan axiss of a cylinder that milling train back up roll is primarily subjected to power are held, when providing that it dispatches from the factory because of standard just The normal work radial internal clearance value necessarily having, and rolling technique not yet to this, answered by the presence of working clearance both at home and abroad at present Some concerns and research, therefore from equipment design, influence of this working clearance to rolled products at present is not effectively controlled also Processing solves well, its presence, which is concentrated, influences to sting steel shakiness, working roll system when showing current steel mill's Rolling Production The irregular impact of huge moment will be subject, roller jump is caused and pass is varied at random, stocking head shape occur Size is different, to cause the unsuitable and frequent steel-fastening of guide and guard, produces continuous rolling process and bites difficult and failure not yet one Fixed regularity, needs the production of helpless stoppings repeatedly to adjust rolling mill guiding, pole be unfavorable for unit it is continuous normally continuously and stably Operation, equipment changes at random there is the jump of fatal roller and pass and just shows to the product for producing some more demanding precision at present It obtains helpless.Therefore the above-mentioned mature main force type that steel is widely used both at home and abroad at present has less been adapted to the enterprise of country's call Industry need to further carry out product up-gradation, improve product quality and increase economic benefit.

Summary of the invention

The technical problem to be solved in the present invention is to provide be capable of the novel multiple of non-gap rolling in a kind of guarantee milling train use Occlusal equilibration device, can satisfy gapless accurate rolling stiff mill come using.

In order to achieve the above objectives, technical scheme is as follows：

A kind of composite balancing device of stiff mill, including main bearing seat, the main bearing seat both ends are respectively equipped with behaviour Make side and transmission side, roller system is additionally provided on the main bearing seat, the roller system is set between the fore side and transmission side；

The operation side stand for being used to support roller system is equipped in the fore side, the operation side stand is equipped with plunger type dish Shape complex spring group；

The transmission side is equipped with auxiliary bearing, and the auxiliary bearing is equipped with the plunger type dish complex spring group；

The plunger type dish complex spring group includes plunger and several disk springs being sequentially overlapped, several dishes The centre of spring is equipped with through-hole, and the plunger is inserted into the through-hole.

Further, the bracket is equipped with thrust bearing, and the plunger type dish complex spring is mounted on the thrust On the outside of bearing.

Further, outer ring is equipped in the thrust bearing.

Further, the thrust bearing is externally provided with first piston column, and the main bearing seat is equipped with support lasso, described Plunger type dish complex spring is mounted between the first piston column and the support lasso.

Further, it is covered with end cap outside the auxiliary bearing, is equipped in the end cap for installing the plunger type dish The mounting hole of shape complex spring group.

Further, the auxiliary bearing is externally provided with second piston column, and auxiliary bearing outer ring, institute are additionally provided in the end cap Plunger type dish complex spring is stated to be mounted between the second piston column and the auxiliary bearing outer ring.

Further, the gap of 1.2-1.8mm wide is equipped between the auxiliary bearing outer ring and the mounting hole.

Further, along the main bearing seat, symmetrically the plunger type dish is multiple equipped with two pairs for the operation side stand Close groups of springs, each pair of plunger type dish complex spring group include two angles be 60 ° -120 ° plunger type dish it is compound Groups of springs.

Further, the auxiliary bearing be equipped with two pairs along the main bearing seat, symmetrically the plunger type dish is compound Groups of springs；Each pair of plunger type dish complex spring group includes the compound bullet of plunger type dish that two angles are 60 ° -120 ° Spring group.

Further, the roller system includes upper roller system and lower roll system, and the two sides of the upper roller system are respectively equipped with the transmission The two sides of side and fore side, the lower roll system are respectively equipped with the transmission side and fore side.

Through the above technical solutions, the beneficial effects of the invention are as follows：

The present invention extends intrinsic gap between the part of original machine type and eliminates balance theory, with by adjection in two sides Elastic force on auxiliary bearing lifts the method that roll is run that balances, and forms base bearing supporting region back lash and is always Zero plural equilibrium system efficiently solves the another novel gap mode that disappears that current equipment influence of rolled roller is jumped, it and it is conventional Compared to big change is not made, most components can still reuse and continue to use for roller system, and need to only reuse the fore side support of bearing, brand-new transmission The bearing (ball) cover of side, and the bottom outlet that plunger and disc spring are installed at eight needed for work is added, reduce the cost of scrap build And expense, it can be used as the most efficient capacity of equipment of steel mill from now on and promote technological transformation project to promote.

The present invention 1.25 times of calculating configuration dish-like complex springs of plunger type of practical roll weight according to applied by scene Group, and the deflection and equilibrant force of disc spring can be adjusted flexibly by adjusting pad, make roll stacks produce respectively a kind of ideal rolling, The optimum state of suspension operation, same rack is widely portable to horizontal rolling, vertical rolling, peace stand convertible rolling, reaches Optimum Combination of Equipment is arrived, appropriate preload has protection efficiency to equipment, optimal performance needed for can playing equipment.

The present invention strengthens the elastic force between roller system, under bad working environments by fastening increase disk spring in roller Adaptability is very strong, can guarantee that each momentary status gap of the work department of base bearing is zero, contact condition is constant always, substantially increases Installation accuracy, intensity and the online and offline tuning performance of equipment show to work at the same time roller with true constant characteristic What system applied preloads and enhances the integral rigidity of host, and the bearing for preloading lower work can provide more accurate axis again and draw It leads, roller system high-speed cruising can be met and accomplishes noise-less operation, the normal wear of roller system Bearing configuration in operation and sedimentation institute Increased radial internal clearance can constantly be compensated by the flexible balance device, to due to part deformation caused by expanding with heat and contract with cold it Also it can adjust to changed conditions, keep good state and be conducive to extend the service life of device roller system valuableness bearing.

The present invention and existing conventional roll system screw pair, which disappear, generates comprehensive effect together with gap balance mechanism, forms a new generation The plural equilibrium system of milling train, creativeness, which is proposed, can meet the new of all stress operations of milling train portion gapless driving Rolling Production Generation precision high rigidity finisher.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the balanced structure of cylindrical helical spring in the prior art provided by the invention；

Fig. 2 is the structural schematic diagram of the complex spring of butterfly in the prior art group structure provided by the invention；

Fig. 3 is the structural schematic diagram of the balanced structure of hydraulic cylinder in the prior art provided by the invention；

Fig. 4 is the structural schematic diagram of the elastic damping structure of plunger type in the prior art provided by the invention；

Fig. 5 is the structural schematic diagram of the dish-like elastic colloid structure of butterfly in the prior art provided by the invention；

Fig. 6 is the structural schematic diagram in gap occur in the use of milling train in the prior art provided by the invention；

Fig. 7 is a kind of structural schematic diagram of the composite balancing device of stiff mill provided by the invention；

Fig. 8 is the face A-A working state figure when roller system provided by the invention fore side works；

Fig. 9 is the face B-B working state figure when roller system provided by the invention transmission side works；

Figure 10 is the partial enlarged view of E in Fig. 7 provided by the invention；

Figure 11 is the partial enlarged view of F in Fig. 7 provided by the invention；

Figure 12 is force analysis figure provided by the invention；

Figure 13 is partial duty figure provided by the invention；

Number and corresponding component title represented by letter in figure：

1, plunger type dish complex spring group；2, side stand is operated；3, thrust bearing；4, short garden axis of a cylinder is held；5, topping roll； 6, bottom roll；7, auxiliary bearing；8, end cap；9, bearing spider；10, piston boit.

Specific embodiment

In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Conjunction is specifically illustrating, and the present invention is further explained.

Embodiment 1

Referring to shown in attached drawing 7-11, a kind of composite balancing device of stiff mill provided by the invention includes rolling first The main bearing seat of machine is respectively fore side and transmission side at the both ends of main bearing seat, is roller system in the centre of main bearing seat, described Roller system is set between the fore side and transmission side；

Base bearing is equipped on main bearing seat, i.e. the garden Tu Zhongduan axis of a cylinder is held.

Specifically, it is equipped in the fore side and is used to support the operation side stand 2 of roller system, on the operation side stand 2 Equipped with plunger type dish complex spring group 1；

Further, balanced action is used and plays for convenience, the thrust bearing 3 is externally provided with first piston column, The main bearing seat be equipped with support lasso, the plunger type dish complex spring group 1 be set to the first piston column with it is described It supports between lasso.

In order to protect thrust bearing 3 and internal stress, outer ring is set in thrust bearing 3, alleviation is played by outer ring Effect.

The transmission side is equipped with auxiliary bearing 7, and auxiliary bearing 7 is equipped with the plunger type dish complex spring group 1；

Wherein, it is covered with end cap 8 outside the auxiliary bearing 7, is equipped in the end cap 8 for installing the plunger type dish The mounting hole of complex spring group 1.

In use, the base bearing on main bearing seat does not contact directly with plunger type dish complex spring group 1, plunger type dish Shape complex spring group thrust is that 3 outer ring of thrust bearing of the auxiliary bearing and transmission side by acting on transmission side is passed on roll , roll acts on base bearing（The garden Ji Silieduan axis of a cylinder is held）.

In order to increase buffering, the auxiliary bearing 7 is externally provided with second piston column, is additionally provided with auxiliary bearing in the end cap 8 Outer ring, the plunger type dish complex spring group 1 are set between the second piston column and the auxiliary bearing outer ring.

In order to realize buffering, guarantee has the space for having praised roll, the auxiliary bearing outer ring and the mounting hole Between be equipped with 1.2-1.8mm wide gap.

Wherein, the preferred 1.5mm of the width in gap.I.e. bearing (ball) cover 8 cooperates with loaded on auxiliary bearing outer ring therein design Size just distinguishes big 1.5mm.

Wherein, the operation side stand 2 be equipped with two pairs along the main bearing seat, symmetrically the plunger type dish is compound Groups of springs 1, each pair of plunger type dish complex spring group 1 include two angles be 60 ° -120 ° plunger type dish it is compound Groups of springs 1.

Further, preferably 90 ° of angle.

The auxiliary bearing 7 is equipped with two pairs along the symmetrical plunger type dish complex spring group 1 of the main bearing seat； Each pair of plunger type dish complex spring group 1 includes the plunger type dish complex spring group 1 that two angles are 60 ° -120 °.

Wherein, preferably 90 ° of the degree of angle.

Above-mentioned roller system includes upper roller system and lower roll system, and the two sides of the upper roller system are respectively equipped with transmission side and fore side, The two sides of the lower roll system are also respectively equipped with transmission side and fore side.

Specifically, wherein plunger type dish complex spring group 1 includes plunger and several disk springs being sequentially overlapped, several The centre of the disk spring is equipped with through-hole, and the plunger is inserted into the through-hole.

The size specification and lead to the hole site of several disk springs, hole size are unification, in this way, facilitating its superposition And the insertion of plunger.

Embodiment 2

Referring to shown in attached drawing 7-11, in the present embodiment, due to the prior art, in use, up-down rollers system is at work, due to There are gaps for the effect of spring, Impact direction and radial gap, simultaneously as four garden Lie Duan axiss of a cylinder hold and just must when leaving the factory There need be normal work radial internal clearance value, cause at work, roller system can have gap.Referring to the plural equilibrium of the application Device has been newly increased at eight by roller owner bearing working between up-down rollers system by the dish-like compound bullet of the consistent plunger type of resultant direction Spring group is respectively used to up-down rollers system fore side, the thrust of transmission side, on suspension auxiliary bearing, and auxiliary bearing outer ring and roller case are pacified It fills hole and uses wide arc gap floating fit, facilitate to form two o'clock resilient plunger stabilization inside auxiliary bearing and lifted roll, completion The radial elastic power of balance roll and base bearing disappears gap function.

In the application, transmission the limited space of side roller case increased newly lift balanced support roll effect auxiliary bearing and Bearing balance is lifted in the axial thrust bearing outer ring of up-down rollers system fore side first wife, together forms at four group eight of molding roller The resilient plunger that roller mill main axle is held lifts balance anti-backlash mechanism, it disappears with existing conventional roll system screw pair together with gap balance mechanism The comprehensive plural equilibrium system concept of high-precision rolling mill of new generation is formd, superfinishing can be met by being creatively proposed a new generation Close, impact resistance, can high-speed stable running, all force-summing elements are gapless driving, are suitble to the high-quality of high-intensitive Rolling Production High rigidity finisher.

In the application, the working principle of rolling equipment；Referring to attached drawing 12, when pair rolling equipment works, metal stock is logical It crosses two opposite rolls of driving direction to bite, is then rolled deformation by roll, equipment bears two roll relative deformations The roll-force of blank outward direction, metal stock section are constantly reduced, and length increases, and blank is changed stepwise various disconnected needed for obtaining The product of face shape.

By analyzing the conventional equipment stress of part and gap production therebetween under general use state, with Change situation has occurred in its gap after currently taking all kinds of means to change its load part stress state；

Referring to attached drawing 12, rolling equipment factor of play（1）：That is the by-produced gap of stress screw thread；Conventional equipment rolls work Impact direction extends outward along deformation blank when making, and as upper roller system stress is upward, and lower roll system stress is downward, two directions Power is again by the screw rod and screw of most important load part left-right rotary（Shown screw thread pair portion is introduced referring to Fig. 1-Fig. 5 prior art） It is assembled integrally, top and bottom rolls roll the drag of blank deformation when top and bottom rolls system screw thread pair portion subjects rolling steel billet, such as When the equipment works under the free position of space, component certainly will fall to the earth's core direction fruit under gravity, cooperation Part by moving condition and machining accuracy constraint screw thread pair between must have certain fit clearance, when as worked under equipment level state on The screw thread auxiliary air gap of roller system is present in matching thread engagement above, i.e., consistent with stress engagement direction when rolling, therefore crosses steel When screw thread pair between there are the free runaway conditions of machinery in certain interval value, that is, the roller jump for the product quality that has an impact must be retained Value, by above-mentioned analysis and attached drawing 1-5 it is found that all kinds of gap technologies that disappear in the current equipment portion, i.e., roll along screw rod axis Direction applies additional balance internal force to keep top and bottom rolls system screw thread pair in any state transmitting roll-force part between it The screw thread auxiliary air gap of lower rolling Impact direction is all zero, eliminates the need for the screw thread auxiliary air gap for influencing product quality when steel by the portion Roller jump value.

Rolling equipment factor of play（2）：That is four garden Lie Duan axiss of a cylinder of control forming roller system precision hold standard diameter when factory To clearance value（For value as defined in the standard of running well）The gap of generation；Such milling train back up roll is primarily subjected to four column of power Short garden axis of a cylinder is held, because of the normal work radial internal clearance value just necessarily having when standard provides that it dispatches from the factory（See associated bearings standard）, When similarly as worked under equipment level state, upper roller system is that the component of its adequate and systematic service is also under gravity to the earth's core side To falling, the loaded work piece portion that four garden Lie Duan axiss of a cylinder hold back-up roll is influenced to form gap operation by intrinsic fit clearance, It also there is the machinery free runaway condition in certain bearing clearance value when having served as steel therebetween, the sum for affecting product quality has Roller jump value.

Four garden the Lie Duan axiss of a cylinder that rolling technique is not yet primarily subjected to power to milling train back up roll current both at home and abroad hold workplace The presence of gap is received due attention and is studied, therefore is not effectively controlled also from equipment design upper this working clearance at present and very It is located in understanding well to determine, its presence, which is concentrated, influences to sting steel shakiness when showing current steel mill's Rolling Production, and working roll system will The irregular impact of huge moment is subject, roller jump is caused and pass is varied at random, stocking head shape size occur It is different, to cause the unsuitable and frequent steel-fastening of guide and guard, produces continuous rolling process and bite difficult and failure there are no certain Regularity needs repeatedly helpless stopping production to adjust rolling mill guiding, and pole is unfavorable for the continuous of unit and normally continuously and stably runs, Current equipment there is fatal roller to jumping and pass changes at random to producing the product of some more demanding precision just Seem helpless.

The screw thread pair backlash eliminating equipment that the application is set using roller system addition auxiliary bearing, internal elastic balancing device and first wife It effectively combines, maintains roll to rolling Impact direction suspension gapless operation work, jumped with this to have solved gap Zha ﹑ roller The brings technical problems such as great ﹑ Ka Gang ﹑ Product Precision difference.

As the further extension of the application, finisher and mm finishing mill unit are used, generally in order to improve its mill product Precision, usually all take the rolling equipment of high rigidity, such as currently a popular all kinds of high rigidity short stress rolling mills.It is common special Stress part is few as far as possible when point is rolls, and the path in institute's stress circuit is short as far as possible.And the application is exactly to operate in its working roll system The roll axial direction locating shaft that side original is equipped with holds the auxiliary newly established with transmission side this technology and lifts bearing outer ring（See the A in Fig. 7 Portion, the portion B）Be additionally arranged at four pair eight, be specifically shown at the A in Fig. 7 and B at, and referring to shown in attached drawing 8 and 9, dish-like complex spring column It is arranged between plug 1 in 90 degree of angles and there is fixed permanent rebound with joint efforts, dish-like complex spring plunger push top resultant force and rolling Power direction is forever consistent and is quantitatively greater than roll gravity forever, and reference Fig. 7 is respectively acting on by the auxiliary bearing of two sides and is rolled On roller 5 and bottom roll 6, causing the milling train, no matter Rolling roller owner's shaft strength joggleword portion under which kind of state is protected always It holds（Both no matter equipment was whether there is or not having been rolled, roller tie up to space in which kind of location status）There is the operation that works under precompression, i.e., Satisfaction forms all base bearings of Rolling roller system, and gapless accurate rolls this unique new function in broad sense.

Existing short stress rolling mill does not have this characteristic, they under which kind of location status of wheel without using at present, all There is also the drawbacks that base bearing operation has this pair of of Rolling Production of working clearance totally unfavorable.

Referring to shown in attached drawing 13, the dish-like complex spring group of the consistent plunger type of resultant direction（See Figure 13）, bounce passes through Fore side, transmission side auxiliary bearing be respectively acting on topping roll 5 and bottom roll 6, at bearing block and pull rod rack add Some independent balance systems eliminate the secondary excessive drive motion gap of stress part in the operation of rolling, are influenced with this to reduce Rolling product quality crosses steel rider jump value, non-deformability and enhancing equipment rigidity when its stress is improved, to keep production Workpiece measurement precision, outer profile shape are stablized.

The application has found and existing milling train essence can be improved by sufficiently studying working principle, the force analysis of roller system of rolling mill The another breakthrough mouth of degree and even running, i.e., positioning thrust, the radial auxiliary of upper and lower stone roller roller system of the new design in rolling blank Bearing has been newly increased on roll line outer ring at four pair eight, in 90 degree of angle arrangements and has the dish-like compound of permanent bounce Spring-loaded plunger push top, by short stress rolling mill roller owner bearing by work the dish-like complex spring group of the consistent plunger type of resultant direction, Bounce is respectively acting on topping roll 5 and bottom roll 6 by the auxiliary bearing of fore side, transmission side, due to auxiliary bearing outside Circle uses wide arc gap with its mounting hole（Main shaft when i.e. design fit clearance is greater than the radial working clearance of base bearing and scraps Hold the abrasion magnitude of slideway and pearl）Floating fit forms the auxiliary bearing outer ring of fore side, transmission side by two o'clock elastic Plug elastic force, which is stablized, lifts the supporting part that the built-in roll that suspended is close to base bearing, that is, has balanced top and bottom rolls and base bearing The radial clearance of operative orientation completes the scheduled gap functional objective that disappears.They will disappear gap with conventional roll system above-mentioned screw pair Balance mechanism（See Fig. 1-Fig. 5 described in the similar products structure of front）It is comprehensively multiple to together form high-precision rolling mill of new generation Occlusal equilibration system concept, ultraprecise, impact resistance can be met by being creatively proposed a new generation, can high-speed stable running, Suo Youshou Power element is gapless driving, the high-quality high rigidity finisher for being suitble to high-intensitive Rolling Production.

In the application, have the advantage that：

It is combined with the plural equilibrium system of the carrying screw thread pair of rack up-down rollers system and base bearing, solves current influence Rolling quality, device roller jump another undesirable gap improved procedure that disappears, it does not make big change, greatly compared with conventional roll system Part components can still reuse and continue to use, and need to only utilize the fore side support of bearing 2, the bearing (ball) cover 8 of brand-new transmission side, and add work Plunger and the installation bottom outlet of disc spring, reduce the cost and expense of scrap build, can be used as steel mill from now at required eight Most efficient capacity of equipment promotes technological transformation project to promote.

1.25 times of calculating configuration dish-like complex spring groups of plunger type of practical roll weight according to applied by scene, and can By adjusting the thickness of gasket, the deflection and equilibrant force of disc spring is adjusted flexibly, so that roll stacks is produced a kind of ideal respectively and rolls System, the optimum state of suspension operation, same rack is widely portable to horizontal rolling, vertical rolling, peace stand convertible rolling, Optimum Combination of Equipment is reached, appropriate preload has protection efficiency to equipment, optimal use needed for can playing equipment Energy.

It is arranged in four groups of up-down rollers system（Two are plunger at one group, four group eight）Reinforced disc spring balance plunger group is bullet Property power, the characteristic shown is softer, and the adaptability under bad working environments is very strong, it is ensured that each moment shape of the work department of base bearing State gap is zero, and contact condition is constant always, substantially increases the installation accuracy, intensity and online and offline tuning performance of equipment It shows to work at the same time preloading and enhancing the integral rigidity of host for roller system application, in advance with true constant characteristic The bearing to work under load can provide more accurate axis guidance again, can meet roller system high-speed cruising and accomplish noise-less operation, roller It is that the increased radial internal clearance of the normal wear of Bearing configuration in operation and sedimentation institute can be by the flexible balance device come not Disconnected compensation, to it can also adjust to changed conditions due to part deformation caused by expanding with heat and contract with cold, keeps good state and is conducive to extend The service life of device roller system valuableness bearing.

It filled up Rolling roller system suspension zero-clearance operation domestic and international processing technique in terms of blank, it will with it is above-mentioned Conventional roll system screw pair disappear gap balance mechanism generate together track close effect, form the plural equilibrium system of milling train of new generation, create The property made, which is proposed, can meet the precise new-generation high rigidity finished product of all stress operations of milling train portion gapless driving Rolling Production and roll Machine.

The working principle of roller system of rolling mill suspension zero-clearance rolling operation of the present invention：In the fore side of roller system of rolling mill, transmission side The auxiliary bearing outer ring of setting is mounted with four group of eight dish-like compound bullet for sentencing certain angle distribution close to deformed area in roller case Spring plunger group, elastic chock plug are respectively used on the auxiliary bearing of up-down rollers system fore side, transmission side, auxiliary bearing outer ring with The design of roller case mounting hole uses wide arc gap floating fit, facilitates to form the stable resultant force that internal two o'clock stopper head elasticity is lifted, with External support lasso camber, which contains, lifts roll in stable suspersion state, guides top and bottom rolls to base bearing by auxiliary bearing Apply it is a certain amount of preload, direction is again always consistent with roll-force direction, makes the lift of top and bottom rolls top in stablizing between zero The suspended state of gap, original radial clearance is always positioned at the non-bearing area of base bearing when maintaining base bearing carrying, therefore this is rolled No matter machine works all under any state and will remain base bearing and preload the operation of lower gapless, i.e., new equipment is combined Effect constitutes molding roller base bearing and disappears the balance mechanism of gap operation, can effectively cut down the radial trip of original base bearing up and down The conventional roll system screw pair gap balance mechanism that disappears together forms new one in gap 0.4 ~ 0.5mm of average out to, it and Fig. 1-Fig. 5 above-mentioned For the plural equilibrium system of milling train, it will greatly improve the Product Precision of its Rolling Production.

The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (10)

1. a kind of composite balancing device of stiff mill, it is characterised in that：Including main bearing seat, the main bearing seat both ends point Not She You fore side and transmission side, roller system is additionally provided on the main bearing seat, the roller system is set to the fore side and transmission side Between；

The operation side stand for being used to support roller system is equipped in the fore side（2）, the operation side stand（2）It is equipped with plunger type Dish-shaped complex spring group（1）；

The transmission side is equipped with auxiliary bearing（7）, the auxiliary bearing（7）It is equipped with the plunger type dish complex spring group （1）；

The plunger type dish complex spring group（1）Including plunger and several disk springs being sequentially overlapped, several dishes The centre of spring is equipped with through-hole, and the plunger is inserted into the through-hole.

2. a kind of composite balancing device of stiff mill according to claim 1, it is characterised in that：The bracket（2） It is equipped with thrust bearing（4）, the plunger type dish complex spring group（1）Set on the thrust bearing（4）Outside.

3. a kind of composite balancing device of stiff mill according to claim 2, it is characterised in that：The thrust bearing （4）It is interior to be equipped with outer ring.

4. a kind of composite balancing device of stiff mill according to claim 2, it is characterised in that：The thrust bearing （4）It is externally provided with first piston column, the main bearing seat is equipped with support lasso, the plunger type dish complex spring group（1）If Between the first piston column and the support lasso.

5. a kind of composite balancing device of stiff mill according to claim 1, it is characterised in that：The auxiliary bearing （7）It is covered with end cap outside（8）, the end cap（8）It is interior to be equipped with for installing the plunger type dish complex spring group（1）Installation Hole.

6. a kind of composite balancing device of stiff mill according to claim 5, it is characterised in that：The auxiliary bearing （7）It is externally provided with second piston column, the end cap（8）Inside it is additionally provided with auxiliary bearing outer ring, the plunger type dish complex spring group （1）Between the second piston column and the auxiliary bearing outer ring.

7. a kind of composite balancing device of stiff mill according to claim 5, it is characterised in that：The auxiliary bearing The gap of 1.2-1.8mm wide is equipped between outer ring and the mounting hole.

8. the composite balancing device of -7 any a kind of stiff mills according to claim 1, it is characterised in that：The behaviour Make side stand（2）Two pairs are equipped with along the symmetrical plunger type dish complex spring group of the main bearing seat（1）, each pair of described Plunger type dish complex spring group（1）It include the plunger type dish complex spring group that two angles are 60 ° -120 °（1）.

9. the composite balancing device of -7 any a kind of stiff mills according to claim 1, it is characterised in that：It is described auxiliary Help bearing（7）Two pairs are equipped with along the symmetrical plunger type dish complex spring group of the main bearing seat（1）；Each pair of column Plug dish complex spring group（1）It include the plunger type dish complex spring group that two angles are 60 ° -120 °（1）.

10. the composite balancing device of -7 any a kind of stiff mills according to claim 1, it is characterised in that：It is described Roller system includes upper roller system and lower roll system, and the two sides of the upper roller system are respectively equipped with the transmission side and fore side, the lower roll system Two sides be respectively equipped with the transmission side and fore side.