CN203817055U - Independent upper middle roller replacement device - Google Patents

Abstract

The utility model relates to an independent upper middle roller replacement device which is suitable for a small-roller-diameter six-roller rolling mill. The small-roller-diameter six-roller rolling mill comprises working rollers, middle rollers and supporting rollers, wherein an upper supporting roller, an upper middle roller, an upper working roller, a lower working roller, a lower middle roller and a lower supporting roller are arrayed in sequence from top to bottom and are respectively supported on respective bearing pedestals through rotating shafts; the supporting rollers, the middle rollers and the working rollers on the upper side and the lower side are in axial symmetry relative to a rolling line; middle roller bending and stringing devices are arranged at the shaft ends of the middle rollers; a supporting roller balance device and a roller joint adjustment hydraulic cylinder are positioned on the bottommost side of a rack; the center line of the rack is vertically positioned at the center of the rack; the upper middle roller is provided with an independent roller replacement device; as the upper middle roller is provided with the independent roller replacement device, within a certain upper middle roller and upper working roller design clearance, the upper middle roller can successfully realize independent roller replacement operation.

Description

The independent changing rig of a kind of upper intermediate calender rolls

Technical field

The present invention relates to the independent changing rig of a kind of upper intermediate calender rolls, be applicable to pony roll footpath six-high cluster mill.

Technical background

Six-high cluster mill is a kind of board rolling mainstream model of technology maturation, has advantages of that output is high, end product quality is high, consumption is less, device fabrication difficulty is less and maintenance is less.Its primary structure as shown in Figure 1, comprises rolling line adjusting device 101, top backing up roll 102, upper intermediate calender rolls 103, intermediate calender rolls roll bending and shifting roller arrangement 104, top working roll 105, working roller bending hydraulic cylinder 106, work roll bending piece 107, bottom working roll 108, lower intermediate calender rolls 109, frame 110, lower support roll 111 and roll gap adjustment hydraulic cylinder 112.Rolling line adjusting device 101 is for adjusting height of rolling line.Intermediate calender rolls roll bending and shifting roller arrangement 104 is for adjusting plate shape.Working roller bending hydraulic cylinder 106 is for adjusting plate shape.Roll gap is adjusted hydraulic cylinder 112 for adjusting rolled piece exit thickness.But conventional six-roll cold mill working roll can not be done too littlely, the footpath of its working roll (barrel diameter) wide (strip width) is not less than 0.25 than generally, when the material of the high drag of rolling is difficult to be competent at during as the band steel of middle high grade silicon steel, stainless steel, high-strength steel and Ultra-thin, this adopts multi-roll mill rolling often, and typical type is 20 roller mills and 18 roller mills.Compare with six-high cluster mill, multi-roll mill have mill speed low, yield poorly, cost is high, consumption is large, troublesome poeration, equipment complicated, manufacture difficulty is large and maintenance is large shortcoming, if can adopt six-high cluster mill rolling, will have obvious economic benefit.

Six-high cluster mill rolling above-mentioned material to be used, working roll roller footpath need be significantly reduced.Conventional six-high cluster mill top working roll 105, bottom working roll 108, top backing up roll 102 and lower backing roll 111 are positioned at framework window center, the rotation centerline of above-mentioned 4 rollers overlaps in the horizontal direction, the rotation centerline of upper intermediate calender rolls 103 and lower intermediate calender rolls 109 overlaps in the horizontal direction, and with respect to top working roll 105, bottom working roll 108, the rotation centerline of top backing up roll 102 and lower support roll 111 is designed with an eccentric throw, under this wobbler action, roll-force produces horizontal component by breaker roll, to eliminate the gap between roll chock and frame, the position stability of roller system while guaranteeing rolling.This eccentric force is very large, and the six-high cluster mill for working roll transmission is the chief component of working roll horizontal force.Under the effect of working roll body of roll horizontal force, the increasing that reduces to bring its horizontal amount of deflection in roller footpath, and then production board shape is worsened.

In prior art, certain company adopts at both sides work roll bending piece and adds the wedge bearing block of roller that pushes the work forward, thereby working roll is moved along rolling direction, realizes the change of eccentric throw to reduce the horizontal force on working roll.But there is the problem of the following aspects in this scheme: first, consider fuel factor in the operation of rolling, can there is thermal expansion in working roll and parts thereof, and workroll bearing both sides roller bending block is rigid support, so generally leave the gap of 0.2-0.5mm between working roll bearing block and adjacent roller bending block.In real work, not folder is dead completely for working roll bearing block, and the size of its horizontal force is also measured.Thereby the size of eccentric throw amount of movement cannot be revised by theoretical calculating completely, the size of working roll horizontal force is also difficult to accurate control.The second, under the operating mode described in article one, in order to guarantee stable that the predetermined side of design that leans against of working roll bearing block, need stay certain horizontal force surplus to act on working roll and this theoretical level power can not be set as to zero.Because it is different to produce the principal element upper and lower roll roll torque of upper and lower work body of roll horizontal force, therefore the horizontal force of two rollers is different, and two rollers move simultaneously, the amount of moving horizontally is identical, can only take into account upper and lower roll, therefore have to strengthen above-mentioned horizontal force surplus, can not reduce body of roll horizontal force in amplitude peak ground.Like this, the roller footpath of working roll just can not be done very littlely.

Because this mill rolls footpath is less, and introduced the technology of moving horizontally, both superpose mutually, and how making this milling train in limited space, carry out complete arrangement is a more scabrous problem, thus, and the variation that also band is served corresponding apparatus.

Summary of the invention

The object of the invention is for above deficiency and shortcoming, providing a set of working roll can move horizontally, the pony roll footpath six-high cluster mill that horizontal force can accurately be controlled and the horizontal amount of deflection of working roll is less.

On this basis, the technical problem that the present invention further will solve is: provide a kind of upper intermediate calender rolls independent changing rig, be applicable to pony roll footpath six-high cluster mill.

For solving the problems of the technologies described above, the technical solution used in the present invention is:

The independent changing rig of a kind of upper intermediate calender rolls, be applicable to pony roll footpath six-high cluster mill, described pony roll footpath six-high cluster mill comprises working roll, intermediate calender rolls, backing roll, wherein, top backing up roll, upper intermediate calender rolls, top working roll, bottom working roll, lower intermediate calender rolls and lower support roll are arranged in order from top to bottom and by swivel bearing, are supported on bearing block separately respectively; Each backing roll of upper and lower, intermediate calender rolls, working roll are respectively with respect to roll line axial symmetry separately; Each axle head of each intermediate calender rolls arranges intermediate calender rolls roll bending and shifting roller arrangement, and backing roll bascule and roll gap are adjusted hydraulic cylinder and be positioned at below of frame; Frame central line is vertically positioned at frame central;

It is characterized in that: top backing up roll, lower support roll, upper intermediate calender rolls and lower intermediate calender rolls center line are separately positioned on same perpendicular with frame central line all the time;

Along continuous straight runs, each axle head left and right sides of each working roll sets gradually fixedly roller bending block of working-roller bending device and working roll toward both sides by shaft centre line, and working roll is horizontal gapless between roller bending block and each working roll bearing block fixedly; The working roll both sides working roll fixedly equal along continuous straight runs setting in roller bending block place moves horizontally adjusting device, the described adjusting device that moves horizontally is set to oppositely move according to the horizontal eccentric throw of working roll center line and the existence of frame central line, and working roll center line and frame central line are positioned on same perpendicular; Top working roll and the bottom working roll left and right sides separately all arranges fixedly roller bending block of a working roll; Or top working roll and bottom working roll arrange fixedly roller bending block of a shared working roll at homonymy;

Upper intermediate calender rolls arranges independent changing rig, comprise the first roll change oil cylinder and the second roll change oil cylinder that two piston rods all vertically arrange upward, the first roll change oil cylinder and the second roll change oil cylinder are fixed on middle roll bending roll-shifting device, and the first roll change oil cylinder is positioned at the outside away from upper intermediate calender rolls; On intermediate calender rolls roll bending and shifting roller arrangement, along left and right directions, be horizontally disposed with a trapped orbit; The piston rod top of the first roll change oil cylinder arrange one parallel with trapped orbit and be positioned at the movable rail of same perpendicular, when movable rail rises can with upper in the middle of roller contact in roll bearing seat; The limit level altitude that trapped orbit height vertically rises with movable rail is concordant;

In technique scheme, described in to move horizontally adjusting device be one of following two kinds of forms:

(1) left side of each axle head of working roll is also provided with left side Cam device, and left side Cam device comprises the first translation oil cylinder that the arranged outside piston rod of a wedge plate, wedge plate can move along working roll center line; Wedge plate has the vertical wedge plate inclined-plane that becomes angle with working roll shaft centre line; Each axle head left side working roll fixedly roller bending block has a fixedly roller bending block inclined-plane vertically arranging, fixedly roller bending block inclined-plane matches that merge can relative sliding for wedge plate inclined-plane and this, wedge plate inclined-plane under the first translation oil cylinder effect along this fixedly roller bending block inclined-plane move and promote left side working roll fixedly roller bending block to the direction of close working roll bearing block impeller-hub bearing, move; The right side of each axle head of working roll, the right side working roll fixedly vertical section of roller bending block is a plane parallel with working roll shaft centre line; Right side working roll fixedly arranges the second translation oil cylinder on roller bending block, can promote right side working roll fixed bend roller arrangement and move to the direction near working roll bearing block impeller-hub bearing during the second phorogenesis; Right side working roll fixedly arranges horizontally-guided bar along promoting oil cylinder action direction on roller bending block, and guide post termination is connected with right side working roll fixed bend roller arrangement; Working roll fixedly stretches out and is fixedly installed push rod along left and right directions level on roller bending block inclined-plane, and push rod external part inclined-plane arranges and coordinates with wedge plate inclined-plane; Wedge plate and frame joint arrange load cell;

(2) working roll of working roll both sides fixedly all arranges horizontal counterbore in roller bending block center, fills in movable grip block in horizontal counterbore; Middle cardiac prominence axle one end of movable grip block stretches in horizontal counterbore and middle cardiac prominence axle is horizontally disposed with axis through-hole, and the middle cardiac prominence axle other end setting of movable grip block extends out boss, and the outer face and the working roll bearing block that extend out boss are adjacent; The inner face that extends out boss and working roll fixedly roller bending block end face vertical coordinate; The working roll of one side fixedly arranges servo-cylinder in roller bending block central horizontal counterbore, and the working roll of opposite side fixedly arranges horizontal hydraulic cylinder in roller bending block central horizontal counterbore; The piston rod of servo-cylinder and hydraulic cylinder is all through movable grip block axis through-hole separately and be fixed on the outer face that movable grip block is adjacent with bearing block; The periphery of horizontal counterbore, fixedly roller bending block is corresponding that four guiding counterbores parallel with horizontal counterbore are set for movable grip block and working roll, horizontally-guided bar one end contacts with guiding counterbore dilapidated walls, and the other end passes guiding counterbore and is fixed on the outer face that movable grip block is adjacent with bearing block; The piston rod of servo-cylinder and horizontal hydraulic cylinder and the guide post external part that respectively leads in the counterbore all outer face adjacent with bearing block with movable grip block are mutually concordant; Piston rod is provided with screw thread with guide post with one end that movable grip block is connected, and by nut, guide post and piston rod is fixed together with the movable grip block in left side respectively; Between movable grip block axis through-hole and each piston rod, oil cylinder sliding sleeve is set, between guiding counterbore and guide post separately, guide post sliding sleeve is set; Horizontal hydraulic cylinder pressure is set to fixed value, and servo-cylinder is set to move horizontally according to the roller that pushes the work forward of the horizontal offset distance action between working roll and frame central line.

In technique scheme, guide post vertically arranges and passes movable rail, when movable rail is risen, by guide post, is vertically led.

The control method for rolling that above-mentioned pony roll footpath six-high cluster mill moves horizontally based on working roll, is characterized in that comprising the steps:

(1) when rolling starts, according to roller, be stability and rolling procedure, the setting horizontal force that points to wedge plate of take is target, calculates the eccentric throw size of required working roll, then the default definite value using this eccentric throw as the operation of rolling is mated;

(2) according to the default definite value of eccentric throw, complete the control of the first translation oil cylinder and the second translation oil cylinder, thereby realize top working roll and bottom working roll is fixed along band steel direction, very close to each other;

(3) in the operation of rolling, roller system is stable, and load cell can side obtain the pressure of wedge plate and frame joint, and then can obtain the active force on wedge plate; According to oil cylinder working-pressure size, can obtain the active force of the second translation oil cylinder, by equilibrium of forces principle, can be obtained now acting on the horizontal force of top working roll and bottom working roll;

If horizontal force is in setting range, default definite value is reasonable, no longer regulates; If horizontal force is not within the scope of default definite value, the horizontal direction of carrying out top working roll and bottom working roll according to rolling operating mode and rolling procedure moves, thereby horizontal force is controlled in setting range, reach the effect of accurate level of control power, to guarantee thering is good plate shape state of a control in the operation of rolling;

While there is thermal expansion effects in the operation of rolling, because working roll and bottom working roll right side all adopt the second translation oil cylinder to clamp, in oil circuit is controlled, adopt overflow, the second translation oil cylinder can level be floated under thermal expansion effects effect; The parts that elimination thermal expansion effects brings damage accordingly.

In technique scheme, the working roll of working roll both sides fixedly roller bending block center all arranges horizontal counterbore, fills in movable grip block in horizontal counterbore; Middle cardiac prominence axle one end of movable grip block stretches in horizontal counterbore and middle cardiac prominence axle is horizontally disposed with axis through-hole, and the middle cardiac prominence axle other end setting of movable grip block extends out boss, and the outer face and the working roll bearing block that extend out boss are adjacent; The inner face that extends out boss and working roll fixedly roller bending block end face vertical coordinate; The working roll of one side fixedly arranges servo-cylinder in roller bending block central horizontal counterbore, and the working roll of opposite side fixedly arranges horizontal hydraulic cylinder in roller bending block central horizontal counterbore; The piston rod of servo-cylinder and hydraulic cylinder is all through movable grip block axis through-hole separately and be fixed on the outer face that movable grip block is adjacent with bearing block; The periphery of horizontal counterbore, fixedly roller bending block is corresponding that four guiding counterbores parallel with horizontal counterbore are set for movable grip block and working roll, horizontally-guided bar one end contacts with guiding counterbore dilapidated walls, and the other end passes guiding counterbore and is fixed on the outer face that movable grip block is adjacent with bearing block.

In technique scheme, the piston rod of servo-cylinder and horizontal hydraulic cylinder and the guide post external part that respectively leads in the counterbore all outer face adjacent with bearing block with movable grip block are mutually concordant; Piston rod is provided with screw thread with guide post with one end that movable grip block is connected, and by nut, guide post and piston rod is fixed together with the movable grip block in left side respectively.

In technique scheme, between movable grip block axis through-hole and each piston rod, oil cylinder sliding sleeve is set, between guiding counterbore and guide post separately, guide post sliding sleeve is set.

In technique scheme, horizontal hydraulic cylinder pressure is set to fixed value, and servo-cylinder is set to move horizontally according to the roller that pushes the work forward of the horizontal offset distance action between working roll and frame central line.

In technique scheme, each axle head of working roll is all fixed in corresponding axis bearing by two spaced bearings, the work roll bending mechanical axis that is mainly used in bearing bending roller force that comprises axle head inner side holds, and the working roll horizontal force bearing of bearing outside and bending roller force bearing shared horizontal force.

In technique scheme, work roll bending mechanical axis holds as cylinder roller bearing, and working roll horizontal force bearing is taper roll bearing.

In technique scheme, cylinder roller bearing is arranged in bearing block by slide block, and slide block center offers and embeds the through hole that cylinder roller bearing is used, and the outer ring of described through hole and cylinder roller bearing fits tightly; The horizontal left and right sides of slide block and bearing block fit tightly, and between the upper and lower both sides of slide block and bearing block, are equipped with gap.

In technique scheme, the vertical section of slide block is rectangle, and bearing block arranges the slide block through hole of square-section.

In technique scheme, the cooperation that contacts with the ladder step of bearing block of the outboard end of described slide block, medial extremity is connected with the axle head gland that is fixedly installed on bearing block rear end.

In technique scheme, between described slide block and axle head gland, along shaft centre line direction, be provided with gap.

In technique scheme, bending roller force bearing is four-row tapered roller bearing, and horizontal force bearing is Biserial cylindrical roller bearing.

In technique scheme, top working roll and bottom working roll bearing block end face left side is fixed with respectively axial elongation plate, has rectangular recess outside each extending-board on end face; Left side working roll fixedly roller bending block and working roll correspondence position arranges upper and lower external part, and the left and right sides end face of each external part respectively has a roller bending block through hole; The first working roll locking cylinder connects a horizontal slide plate, and slide plate stretches out by roller bending block through hole; Slide plate can be by working roll axial restraint in the first working roll locking cylinder effect lower slider stretches into extending-board rectangular recess; Top working roll and bottom working roll bearing block end face right side, right side working roll fixedly roller bending block right side is also fixed with an axial elongation plate, has rectangular recess outside this extending-board on end face; The second working roll locking cylinder connects another horizontal slide plate; Working roll fixedly arranges dividing plate on roller bending block, and this another slide plate stretches out by the space between roller bending block and dividing plate; This another slide plate can be by working roll axial restraint in the second working roll locking cylinder effect lower slider stretches into right side extending-board rectangular recess.

In technique scheme, between roller bending block through-hole wall and horizontal slide plate, be furnished with abrasion-proof backing block.

In technique scheme, the top of intermediate calender rolls roll bending and shifting roller arrangement, two push cylinder are distributed in the left and right sides of intermediate calender rolls and are fixed in frame; Each push cylinder piston rod head all connects a push-and-pull head; A push-and-pull horizontal cross-section is "T"-shaped, is embedded in the T-slot of termination link separately and is fixed together with each termination link; Two termination links are connected and fixed by a horizontal shore; Horizontal shore is fixed on the intermediate calender rolls roll bending and shifting roller arrangement of below by support.

In technique scheme, intermediate calender rolls is also provided with axial locking device, and concrete structure is: the bearing block end face of intermediate calender rolls is fixed with the axial elongation plate being symmetrical set in intermediate calender rolls both sides, and the outside of axial elongation plate has rectangular recess; Intermediate calender rolls locking cylinder is fixed on the lateral surface of intermediate calender rolls roll bending and shifting roller arrangement; The tailpiece of the piston rod of intermediate calender rolls locking cylinder connects cuboid slide plate by chuck; A square hole slot is offered in the side of intermediate calender rolls roll bending and shifting roller arrangement, and cuboid slide plate also can stretch in the rectangular recess of axial elongation plate through square hole slot.

In technique scheme, the square hole slot inwall of intermediate calender rolls roll bending and shifting roller arrangement is fixed with abrasion-proof backing block.

The major advantage that this invention relates to content is:

1, this milling train can be realized moving horizontally of working roll, gapless between working roll bearing block and roller bending block, and because a side adopts oil cylinder design, needn't consider the adverse effect of thermal expansion effects when traditional offset distance arranges, can working roll bearing block folder is dead.

2, this milling train move horizontally the control target of distance be make working roll upper and lower roll to make a concerted effort be zero, increased pressure sensor simultaneously, can accurately measure working roll horizontal force, and with this measured value, default definite value be revised, thereby reach the object of accurate level of control power.

3, on working roll bearing block, near band steel place, increase a bearing, by dual bearing structure, can increase working roll rigidity, significantly reduced the horizontal amount of deflection of working roll, can realize the working roll roller footpath more much smaller than prior art.Simultaneously, the implementation of multiple dual bearing structure is provided, particularly by a slide block, realizes one direction and slide, be equivalent to the line contact of bearing block and bearing to be converted into the face contact of slide block sliding surface and bearing block, make shaft strength even, improve bearing life.Installation method is ingenious, simple in structure, economical and practical.

While 4, there is thermal expansion effects in the operation of rolling, because working roll and bottom working roll right side adopt the second translation oil cylinder to clamp, in oil circuit is controlled, adopt corresponding overflow, thereby the second translation oil cylinder can level be floated under thermal expansion effects effect; Thereby eliminate the parts that thermal expansion effects brings, damage accordingly, thus the guarantee being conducive to the use safety of relevant device, extended service life.

5, because working roll footpath is less, and introduced working roll and moved horizontally technology, adopt original upper intermediate calender rolls frame on top working roll, the top working roll again roller replacing mode of frame on bottom working roll does not have operating space, and this roller replacing mode cannot carry out independent roller replacing operation to upper intermediate calender rolls.For addressing this problem, the present invention adopts the roller replacing mode of the independent roll change of intermediate calender rolls, can replace with separately easily and fast intermediate calender rolls.

Accompanying drawing explanation

Fig. 1 is six-high cluster mill structural representation in prior art;

Fig. 2 is the pony roll footpath six-high cluster mill structural representation in the present invention;

Fig. 3 is that in the present invention, pony roll footpath six-high cluster mill working roll is moved to the left schematic diagram;

Fig. 4 is the six-high cluster mill working roll schematic diagram that moves right in pony roll footpath in the present invention;

In Fig. 5 the present invention, the A-A of Fig. 2 is to 90-degree rotation partial structurtes schematic diagram;

Upper intermediate calender rolls changing rig schematic diagram in the present invention of Fig. 6-7, the A that wherein Fig. 7 is Fig. 6 is to 90-degree rotation view;

Intermediate calender rolls string roller arrangement schematic diagram in Fig. 8 the present invention;

Intermediate roll axial locking device schematic diagram in Fig. 9 the present invention;

Working roll axial locking device schematic diagram in Figure 10 the present invention;

Figure 11 adopts cylinder roller bearing as the stressed schematic diagram of working roll horizontal force bearing in an embodiment;

The working roll horizontal force bearing arrangement schematic diagram of Figure 12 another embodiment of the present invention;

Figure 13 is that A-A of Figure 12 analyses and observe 90-degree rotation structural representation (being also working roll bearing block and dual bearing structure schematic diagram);

Figure 14 is the working roll horizontal force shaft strength schematic diagram in Figure 12;

Figure 15 is the working roll horizontal translation structure chart of six-high cluster mill another kind of embodiment in pony roll of the present invention footpath in Fig. 2.

The specific embodiment

Below in conjunction with an embodiment and accompanying drawing, the invention will be further described.

In order to understand better the present invention, below in conjunction with embodiment and accompanying drawing, technical scheme of the present invention is described further.

As shown in Figure 2, six-high cluster mill comprises that fixedly roller bending block 207, bottom working roll 208, lower intermediate calender rolls 209, frame 210, lower support roll 211, roll gap are adjusted fixedly roller bending block 217 of hydraulic cylinder 212, backing roll bascule 213, lower middle roll bending roll-shifting device 214, left side working-roller bending device 215, left side Cam device 216, left side working roll for rolling line adjusting device 201, top backing up roll 202, upper intermediate calender rolls 203, upper middle roll bending roll-shifting device 204, top working roll 205, right side working-roller bending device 206, right side working roll.The same with the prior art of Fig. 1, rolling line adjusting device 201 is for adjusting height of rolling line.In the middle of upper, roll bending roll-shifting device 204 and lower middle roll bending roll-shifting device 214 are for adjusting plate shape.Right side working-roller bending device 206 and left side working-roller bending device 215 are for adjusting plate shape.Roll gap is adjusted hydraulic cylinder 212 for adjusting rolled piece exit thickness.Left side Cam device 216 is for realizing moving horizontally of working roll.

Wherein, top backing up roll 202, upper intermediate calender rolls 203, top working roll 205, bottom working roll 208, lower intermediate calender rolls 209 and lower support roll 211 are arranged in order from top to bottom and by swivel bearing, are supported on bearing block separately respectively, top backing up roll 202 and lower support roll 211 are arranged symmetrically with up and down with respect to the roll line of six-high cluster mill, upper intermediate calender rolls 203 and lower intermediate calender rolls 209 are arranged symmetrically with up and down with respect to roll line, and top working roll 205 and bottom working roll 208 are arranged symmetrically with up and down with respect to described roll line.

Six-high cluster mill top backing up roll 202, lower support roll 211, upper intermediate calender rolls 203 and lower intermediate calender rolls 209 center line separately are all positioned on same perpendicular with frame central line.

As in Figure 3-5, the left side of each axle head of working roll be also provided with left side Cam device (working roll is when fixedly each self-separation of roller bending block upper working rolls and lower working rolls arranges, each axle head in working roll 205 and 208 arrange separately one on the left of Cam device; As working roll in Fig. 2 when fixedly roller bending block upper working rolls and lower working rolls shares upper working rolls and lower working rolls a left side Cam device is set jointly), left side Cam device comprises the first translation oil cylinder 309 that the arranged outside piston rod of a wedge plate 305, wedge plate 305 can move along working roll center line; Wedge plate 305 has the vertical wedge plate inclined-plane that becomes angle with working roll shaft centre line; Each axle head left side working roll fixedly roller bending block 215 has a fixedly roller bending block inclined-plane vertically arranging, fixedly roller bending block 215 inclined-planes match that merge can relative sliding for wedge plate 305 inclined-planes and this, wedge plate 305 inclined-planes under the first translation oil cylinder 309 effects along this fixedly roller bending block 215 inclined-planes move and promote left side working roll fixedly roller bending block 215 to the direction of close working roll bearing block impeller-hub bearing 220, move;

The right side of each axle head of working roll (arranges corresponding with left end, can arrange separately at each axle head of working roll 205 and 208, also then upper working rolls and lower working rolls can be arranged jointly as one, be positioned at same level height with left side Cam device), the right side working roll fixedly vertical section of roller bending block 206 is a plane parallel with working roll shaft centre line; Right side working roll fixedly arranges the second translation oil cylinder 303, the second translation oil cylinders 303 on roller bending block 206 and does the used time and can promote right side working roll fixed bend roller arrangement and move to the direction near working roll bearing block 220 impeller-hub bearing.

As Fig. 3, shown in 5, if realize the words that working roll (top working roll 205 and/or bottom working roll 208) moves right, can realize in the following way: the first translation oil cylinder 309 promotes wedge plate 305 and moves along piston rod direction, wedge plate 305 is coordinated and is promoted push rod 301 by inclined-plane, push rod 301 promotes left side working-roller bending devices 215, and left side working-roller bending device 215 is by the side roll bearing seat 220 that pushes the work forward, thereby top working roll 205 and bottom working roll 208 are moved right.After moving on to assigned address, right side promotes oil cylinder 303 and promotes right side working-roller bending devices 206 and be moved to the left until be close to working roll bearing block 220, thereby top working roll 205 and bottom working roll 208 levels are fixed.304 is working roll bending cylinder, the same with Fig. 1 Reference numeral 106 of the prior art, its mainly finish the work roller of roller, and in order to adjust plate shape.

As Fig. 4, shown in 5, if realize the words that working roll (top working roll 205 and/or bottom working roll 208) is moved to the left, can realize in the following way: the first translation oil cylinder 309 pulls wedge plate 305 to move along piston rod direction, the second translation oil cylinder 303 promotes right side working-roller bending device 206 and is moved to the left until be close to working roll bearing block 220, until the inclined-plane of push rod 301 and wedge plate 305 kill completely, thereby realize top working roll 205 and bottom working roll 208 levels are fixed.

Guide post 302 makes the movement of right side working-roller bending device 206 have good directionality and stability.

Load cell 308 is embedded in the joint of wedge plate 305 and frame 210, for measuring the pressure of wedge plate 305 bottoms.

When rolling starts, according to roller, be stability and rolling procedure, the horizontal force of take point to wedge and size as 0-10 ton (preferably a certain concrete numerical value is as 10 tons) be target, use Related Computational Methods inverse to go out the eccentric throw size of required working roll, then the default definite value using this eccentric throw as the operation of rolling is carried out relevant matches.According to this value, complete left side Cam device 216 and right side and promote the control of oil cylinder 303, thereby realize top working roll 205 and bottom working roll 208 is fixed along band steel directions, very close to each other.In the operation of rolling, roller system is stable, and load cell 308 can obtain the pressure of wedge plate 305 bottoms, and then can obtain the active force on wedge plate.According to oil cylinder working-pressure size, can obtain the active force that right side promotes oil cylinder 303, by equilibrium of forces equation, can be obtained now acting on the horizontal force of top working roll 205 and bottom working roll 208.If horizontal force is in 0-10 ton (10 tons) scope, model is reasonable, does not regulate again.If horizontal force is within the scope of this expectation not, the horizontal direction of carrying out corresponding top working roll 205 and bottom working roll 208 according to rolling operating mode and rolling procedure moves, thereby horizontal force is controlled in 0-10 ton (10 tons) scope, reach the effect of accurate level of control power, to guarantee thering is good plate shape state of a control in the operation of rolling.

While there is thermal expansion effects in the operation of rolling, because promoting oil cylinders 303, working roll 205 and bottom working roll 208 employing right sides, right side clamp, in oil circuit is controlled, adopt corresponding overflow, thereby make right side promote oil cylinder 303, under thermal expansion effects effect, can level float.Thereby eliminate the parts that thermal expansion effects brings, damage accordingly, thus the guarantee being conducive to the use safety of relevant device, extended service life.

Because working roll footpath is less, and introduced working roll and moved horizontally technology, adopt original upper intermediate calender rolls frame on top working roll, the top working roll again roller replacing mode of frame on bottom working roll does not have operating space, and this roller replacing mode cannot carry out independent roller replacing operation to upper intermediate calender rolls.For addressing this problem, the present invention adopts the roller replacing mode of the independent roll change of intermediate calender rolls, to meet the demand that needs to replace with separately intermediate calender rolls in practical work process.As shown in Fig. 6-7, while changing intermediate calender rolls, rise the first roll change oil cylinder 402, after the roller contact on movable rail 404 and upper intermediate calender rolls 203 bearing blocks, then fall the second roll change oil cylinder 401.When movable rail 404 rises; by guide post 403, lead to guarantee that movable rail 404 vertically rises; trapped orbit 405 is fixed on middle roll bending roll-shifting device 204; its height of vertically rising with movable rail 404 of height is concordant, and whole upper intermediate calender rolls 203 can be pulled out continuously from frame 210 when guaranteeing roll change.Due to the existence of movable rail 404 and trapped orbit 405, by being used in conjunction with of the oil cylinder 501 of upper intermediate roll shifting device (shown in Fig. 8) and the roll changing carriage of frame outside, upper intermediate calender rolls moves on movable rail 404 and trapped orbit 405.

In certain upper intermediate calender rolls 203 and top working roll 205 design gaps, upper intermediate calender rolls 203 can successfully be realized independent roller replacing operation.

Figure 15 is working roll horizontal translation structure chart and the control method thereof of the another kind of embodiment of pony roll of the present invention footpath six-high cluster mill.

Left side working roll fixedly roller bending block 217 is fixed in frame 210, mainly each coupled parts is play supporting role.In frame central line left side (as shown in figure 15), servo-cylinder 22 cylinder bodies are embedded in left side working roll fixedly in roller bending block 217, and on the left of end cap 24 is fixed on servo-cylinder 22 cylinder bodies by bolt assembly 25, working roll is fixedly on roller bending block 217.Left side roll-bending cylinder 21 embeds left side working rolls fixedly in roller bending block 217.Left side working roll fixedly has a horizontal counterbore in roller bending block 217 centers, in its surrounding, have (upper and lower each two of four through holes, as shown in figure 15), the middle cardiac prominence shaft extension of the movable grip block 19 in left side enters left side working roll fixedly in the horizontal counterbore at roller bending block 217 middle parts, and form mating surface with horizontal counterbore above and below, during work, can slidably reciprocate along this mating surface.Movable grip block 19 centers, left side have axis through-hole, surrounding have four through holes (on, lower each two, with left side working roll fixedly the perforate correspondence position of roller bending block 217 arrange), guide post 22 wore respectively the fixedly corresponding through hole of surrounding on roller bending block 217 and left side activity grip block 19 of left side working roll, at guide post 22, wore left side working roll and fixedly in the corresponding through hole of roller bending block 217 surrounding, guide post sliding sleeve 27 was installed, guide post 22 forms and coordinates with guide post sliding sleeve 27, the effect of guide post sliding sleeve 27 is mainly prevent in the excessive wear of guide post 22 and make guide rod 12 have slide-and-guide preferably.The mating surface that the projection of four guide posts 22, the movable grip block 19 in left side and left side working roll fixedly form in the horizontal counterbore at roller bending block 217 middle parts can guarantee top working roll assemble 18 and bottom working roll assemble 17 horizontally-guided translations and can beat, realize accurate centering.Guide post 22 has screw thread with one end addition that the movable grip block 19 in left side is connected, and by guide post nut 20, the movable grip block 19 in guide post 22 and left side is fixed together.Oil cylinder sliding sleeve 28 is installed in movable grip block 19 mider holes in left side, the piston rod afterbody of servo-cylinder 22 has been processed into screw thread, this piston rod wore movable grip block 19 middle through-holes of oil cylinder sliding sleeve 28 and left side, by center nut 29, the movable grip block 19 of the piston rod of servo-cylinder 22 and left side was linked together.On frame central line right side (as shown in figure 15), common hydraulic cylinder 26 cylinder bodies are embedded in right side working roll fixedly in roller bending block 207, and end cap 24 is fixed on right side working roll fixedly on roller bending block 207 by bolt assembly 25 by common hydraulic cylinder 26 cylinder bodies.Common hydraulic cylinder 26 is with locking device, its piston rod afterbody has been processed into screw thread, this piston rod wore oil cylinder sliding sleeve 28 and right movable grip block 19 middle part axis through-holes, by guide post nut 20, the movable grip block 19 of the piston rod of common hydraulic cylinder 26 and right side was linked together.Remainder and left side are arranged symmetrically with about frame central line, and functional description is identical.

When needs complete control, according to rolling mill practice design and real work needs, determine that initial top working roll 205 and bottom working roll 208 disembark frame center line to the distance (providing lateral deviation e to the right here) of skew on one side, the common hydraulic cylinder 26 of left side servo-cylinder 22 and right side is placed in respectively to design initial position (i.e. the end face of the movable grip block 19 in left side movable grip block 19 and right side respectively with the fixing fixing roller bending block 207(end face of close frame central line separately of roller bending block 217 and right side working roll of left side working roll) fits, now top working roll and bottom working roll separately the adjacent face of bearing block 220 have respectively the distance of setting with each outer face of the movable grip block 19 of the movable grip block 19 in left side and right side.Because the right atrial pressure that common hydraulic cylinder 26 is set is fixed, now only need to control servo-cylinder 22 and can realize moving horizontally of accurate control working roll, by the servo valve control servo-cylinder 22 on outside oil circuit, promote the movable grip block 19 in left side and move right, and make it accurately reach the shift value of setting.Common hydraulic cylinder 26 and servo-cylinder 22 are respectively with displacement transducer, as being offset e to the right, take rolling centerline as benchmark, calculate common hydraulic cylinder 26 should leftward position, now two oil cylinders are respectively at initial position, they and bearing block have certain distance, then given oil cylinder operating pressure, allow common hydraulic cylinder 26 be parked in leftward position, given oil cylinder operating pressure allows servo-cylinder 22 move right again, until bearing block is completed to gapless on the grip block that is pressed against common hydraulic cylinder 26.Because the active force of common hydraulic cylinder 26 is obviously greater than the power of servo-cylinder 22, the right can keep motionless always like this, if have expansion or horizontal force excessive, surpassed the given pressure of right side oil cylinder 26, just on loop, carry out overflow, thereby also can make the bearing in bearing block be unlikely to burn out.

Fig. 8 is the string roller implement device of intermediate calender rolls, push cylinder 501 bottoms are fixed in frame 210, and push cylinder 501 piston rod heads and push-and-pull 502 is connected, and push-and-pull 502 is "T"-shaped, be embedded in the "T"-shaped groove of termination link 503, and be fixed together with it by screw.Link 504 links together the termination link 503 of the left and right sides, and support 505 is integrated with link 504, and support 505 is connected on upper middle roll bending roll-shifting device 204 by bolt and counterbore.When needs carry out axial roll shifting, push cylinder 501 promotes, and drives the in axial direction motion of upper middle roll bending roll-shifting device 204, thereby realize axial roll shifting by termination link 503, link 504 and support 505.

Fig. 9 is the axial locking implement device of intermediate calender rolls.The bearing block end face of upper intermediate calender rolls 203 is fixed with extending-board 601, and on extending-board 601, the corresponding cross section that has is for "] " rectangular recess of shape.Locking cylinder 603 is fixed on bearing 602, and bearing 602 is fixed on the side of middle roll bending roll-shifting device 204.The tailpiece of the piston rod of locking cylinder 603 connects slide plate 604 by chuck 605.Slide plate 604 is cuboid.A square hole slot is offered in corresponding position, side at upper middle roll bending roll-shifting device 204, is convenient to slide plate 604 and wears.In the middle of upper, in the square hole slot of the side of roll bending roll-shifting device 204, be fixed with abrasion-proof backing block 606, for the protection of slide plate 604.In the time of will carrying out axial locking to upper intermediate calender rolls 203, locking cylinder 603 promotes slide plates 604 by chuck 605 and advances, until snap in the rectangular recess on extending-board 601, thereby completes the axial locking of intermediate calender rolls.

Figure 10 is the axial locking implement device of working roll.In left side, working roll the first locking cylinder 701 is fixed on cylinder support 702, and cylinder support 702 is fixed in frame 210.Working roll the first locking cylinder 701 piston rod heads are connected with connector 703, connector 703 links together with slide plate 704, left side working roll fixedly respectively has a square opening in the roller bending block 217 upper and lower both sides of external part, and square opening inner side is all furnished with the inordinate wear of the anti-limited slip plate 704 of abrasion-proof backing block 705.At top working roll 205 and the bottom working roll 208 bearing block end face left and right sides, be fixed with respectively extending-board (left side extending-board 706, right side extending-board 716), on extending-board, the corresponding cross section that has is for "] " shape rectangular recess.On right side, oil cylinder 712 is fixed on cylinder support 715, and cylinder support 715 is fixed in frame 210.Oil cylinder 712 piston rod heads are connected with connector 713, and connector 713 links together with slide plate 711.One end that dividing plate 708 is connected with frame 210 has cross section for "] " shape rectangular recess, and be fixed together by bolt assembly 714 and frame 210.Stud component 710 wore on slide plate 711 and dividing plate 708 corresponding hole, and was fixed on right side working roll fixedly on roller bending block 207.

When needs carry out axial locking to top working roll 205 and bottom working roll 208, left side oil cylinder 701 by connector 703 promote slide plates 704 along left side working roll fixedly roller bending block 217 square opening inner surfaces advance, until "] on extending-board 706 on the left of snapping in " in groove.Right side oil cylinder 712 promotes slide plates 711 by connector 713 and advances along dividing plate 708 inner surfaces, until snap in "] on right side extending-board 716 " in groove, thus complete the axial locking of top working roll 205 and bottom working roll 208.

Certainly right side axial locking can adopt equally right side working roll fixedly is correspondingly offered to a large square hole after one section of roller bending block 207 extension and at it, as the locking of left side, allow slide plate 711 advance along this large square internal surface of hole, until snap in "] on extending-board 706 " in groove, thus jointly complete the axial locking of top working roll 205 and bottom working roll 208 with left side axial locking device.

As shown in Figure 5, the present invention has increased a bearing near band steel place on working roll bearing block 220, by dual bearing structure, can increase working roll rigidity, significantly reduces the horizontal amount of deflection of working roll, can realize the working roll roller footpath more much smaller than prior art.Concrete structure is: the two ends of top working roll 205 and bottom working roll 208 are fixed on corresponding bearing block by bending roller force bearing 307 and horizontal force bearing 306 respectively, bending roller force bearing 307 is mainly used to bear the bending roller force of working roll, horizontal force bearing 306 is mainly used to jointly bear the horizontal force that operation of rolling central roll system produces, the great like this service life that extends bending roller force bearing 307 with bending roller force bearing 307.Due to the existence of horizontal force bearing 306, reduced the spacing distance of the horizontal support of working roll, thereby significantly reduced the amount of deflection of the upper and lower working roll in horizontal force action direction.Based on this kind of design, can make the pony roll footpath of working roll can reach 180mm, the wide ratio in footpath can reach 0.14.

Through overtesting, find, can, by lengthening working roll roll neck and increasing a pair of cylinder roller bearing, be equivalent to carry out support works roller with a pair of four-row tapered roller bearing and a pair of cylinder roller bearing.In the operation of rolling, working roll rigidity increases like this, and deflection reduces, can better control panel shape.In first embodiment of the present invention, bending roller force bearing 306 is cylinder roller bearing, and horizontal force bearing 307 is taper roll bearing.Figure 11 is that bending roller force bearing 306 is the stressed schematic diagram of cylinder roller bearing.Horizontal force bearing 306 and bearing block 220 contact for line.

Yet in this embodiment, although this mode makes working roll rigidity obtain guarantee, introduce a new problem, i.e. the stressed problem of cylinder roller bearing.When plate shape goes wrong need to adjust with work roll bending time, cylinder roller bearing can hinder working roll roll neck place and produce amount of deflection, the effect of roller is just not obvious like this, plate shape also just can not get better improvement, simultaneously working roll is in the horizontal direction because the roll diameter of roller deflection that diminishes increases, cylinder roller bearing is played a supporting role at axle journal place, has strengthened again working roll roll neck rigidity.This just requires cylinder roller bearing to belong in the vertical direction freely without restrained condition, and horizontal direction will be improved roll neck horizontal deflection, bearing need support stressed, just be equivalent to bearing to be placed in a vertical slotted hole, but during shaft strength, its outer ring is that line contacts with bearing block, so just makes bearing outer ring deform, rolling element unbalance stress, thereby bearing shortens service life greatly, have a strong impact on production efficiency.

Through further test, proposed a kind of new for the workroll bearing device of Figure 12-14, comprise the bearing block 220 that is installed on working roll 208 or 205 roll neck places, bending roller force bearing 307 and horizontal force bearing 306 are installed in bearing block 220, this device also comprises the slide block 10 being arranged between bearing block 220 and horizontal force bearing 306, on slide block 10, offer the through hole that embeds horizontal force bearing 306 use, the outer ring of through hole and horizontal force bearing 306 fits tightly, the left and right sides of slide block 10 and bearing block 220 fit tightly, and between upper and lower both sides and bearing block 220, are provided with gap.The profile of slide block 10 is rectangle, and its one end is connected with the ladder step of bearing block 220, and the other end is connected with the axle head gland 12 that is fixedly installed on bearing block 220 rear ends, between slide block 10 and axle head gland 12, is provided with certain interval.

In the present embodiment, bending roller force bearing 307 is four-row tapered roller bearing, and its rear end, outer ring is fixed by the interior ladder step of bearing block 220, and outer ring front end is fixing by interior seal cover 6, and interior seal cover 6 is fixed by screws on bearing block 220; Withstand by distance collar 9 its inner ring rear end, and inner ring front end is pressed against on bearing apical ring 5, and bearing apical ring 5 is fixing by thrust ring 3, and thrust ring 3 is fixed by working roll 205 or 208 shaft shoulders again, and thrust ring 3 is dissection type assembling.Horizontal force bearing 306 is Biserial cylindrical roller bearing, and its outer ring front end is fixed by the interior ladder step of bearing block 220, and rear end, outer ring compresses by axle head gland 12, and axle head gland 12 is screwed on bearing block 220; Its inner ring rear end is fixed by collars and the shaft shoulder, and inner ring front end compresses by distance collar 9 and the inner ring of bending roller force bearing 307.Bearing block 220 rear and front ends are all provided with dust ring 14, the liner plate 2 of bearing block when two ends are provided with roll change Shang Xia 220.

Principle of the present invention is: when working roll 205 or 208 roller, horizontal force bearing 306 place's roll necks need to produce deflection and improve plate shape, if bearing block 220 and horizontal force bearing 306 do not have relative sliding gap, working roll 205 or 208 sag will reduce, roller effect will reduce, plate shape also just can not get improving, but gapped words between horizontal force bearing 306 and bearing block 220, horizontal force bearing 306 is just only subject to the power of horizontal direction, vertical direction does not stress, horizontal force bearing 306 will unbalance stress, the lost of life, therefore increase by one can be along bending roller force direction the slide block 10 in bearing block 220 interior slips, slide block 10 can slide up and down and not limit the vertical deflection of roll neck in bearing block 220 during roller like this, guaranteed well again the horizontal rigidity of axle journal, be equivalent to bearing block 220 and the line contact of horizontal force bearing 306 to be converted into the face contact of slide block 10 sliding surfaces and bearing block 220, the load of greatly having improved horizontal force bearing 306 distributes, extended service life, improved the production efficiency of thin plate rolling.

More than explanation is only Application Example of the present invention, certainly can not limit with this interest field of the present invention, and the equivalence of therefore doing according to the present patent application the scope of the claims changes, and still belongs to protection scope of the present invention.

Claims (3)

1. go up the independent changing rig of intermediate calender rolls for one kind, be applicable to pony roll footpath six-high cluster mill, described pony roll footpath six-high cluster mill comprises working roll, intermediate calender rolls, backing roll, wherein, top backing up roll, upper intermediate calender rolls, top working roll, bottom working roll, lower intermediate calender rolls and lower support roll are arranged in order from top to bottom and by swivel bearing, are supported on bearing block separately respectively; Each backing roll of upper and lower, intermediate calender rolls, working roll are respectively with respect to roll line axial symmetry separately; Each axle head of each intermediate calender rolls arranges intermediate calender rolls roll bending and shifting roller arrangement, and backing roll bascule and roll gap are adjusted hydraulic cylinder and be positioned at below of frame; Frame central line is vertically positioned at frame central;

It is characterized in that: top backing up roll, lower support roll, upper intermediate calender rolls and lower intermediate calender rolls center line are separately positioned on same perpendicular with frame central line all the time;

Along continuous straight runs, each axle head left and right sides of each working roll sets gradually fixedly roller bending block of working-roller bending device and working roll toward both sides by shaft centre line, and working roll is horizontal gapless between roller bending block and each working roll bearing block fixedly; The working roll both sides working roll fixedly equal along continuous straight runs setting in roller bending block place moves horizontally adjusting device, the described adjusting device that moves horizontally is set to oppositely move according to the horizontal eccentric throw of working roll center line and the existence of frame central line, and working roll center line and frame central line are positioned on same perpendicular; Top working roll and the bottom working roll left and right sides separately all arranges fixedly roller bending block of a working roll; Or top working roll and bottom working roll arrange fixedly roller bending block of a shared working roll at homonymy;

Upper intermediate calender rolls arranges independent changing rig, comprise the first roll change oil cylinder and the second roll change oil cylinder that two piston rods all vertically arrange upward, the first roll change oil cylinder and the second roll change oil cylinder are fixed on middle roll bending roll-shifting device, and the first roll change oil cylinder is positioned at the outside away from upper intermediate calender rolls; On intermediate calender rolls roll bending and shifting roller arrangement, along left and right directions, be horizontally disposed with a trapped orbit; The piston rod top of the first roll change oil cylinder arrange one parallel with trapped orbit and be positioned at the movable rail of same perpendicular, when movable rail rises can with upper in the middle of roller contact in roll bearing seat; The limit level altitude that trapped orbit height vertically rises with movable rail is concordant.

2. the independent changing rig of upper intermediate calender rolls according to claim 1, is characterized in that: described in to move horizontally adjusting device be one of following two kinds of forms:

(1) left side of each axle head of working roll is also provided with left side Cam device, and left side Cam device comprises the first translation oil cylinder that the arranged outside piston rod of a wedge plate, wedge plate can move along working roll center line; Wedge plate has the vertical wedge plate inclined-plane that becomes angle with working roll shaft centre line; Each axle head left side working roll fixedly roller bending block has a fixedly roller bending block inclined-plane vertically arranging, fixedly roller bending block inclined-plane matches that merge can relative sliding for wedge plate inclined-plane and this, wedge plate inclined-plane under the first translation oil cylinder effect along this fixedly roller bending block inclined-plane move and promote left side working roll fixedly roller bending block to the direction of close working roll bearing block impeller-hub bearing, move; The right side of each axle head of working roll, the right side working roll fixedly vertical section of roller bending block is a plane parallel with working roll shaft centre line; Right side working roll fixedly arranges the second translation oil cylinder on roller bending block, can promote right side working roll fixed bend roller arrangement and move to the direction near working roll bearing block impeller-hub bearing during the second phorogenesis; Right side working roll fixedly arranges horizontally-guided bar along promoting oil cylinder action direction on roller bending block, and guide post termination is connected with right side working roll fixed bend roller arrangement; Working roll fixedly stretches out and is fixedly installed push rod along left and right directions level on roller bending block inclined-plane, and push rod external part inclined-plane arranges and coordinates with wedge plate inclined-plane; Wedge plate and frame joint arrange load cell;

(2) working roll of working roll both sides fixedly all arranges horizontal counterbore in roller bending block center, fills in movable grip block in horizontal counterbore; Middle cardiac prominence axle one end of movable grip block stretches in horizontal counterbore and middle cardiac prominence axle is horizontally disposed with axis through-hole, and the middle cardiac prominence axle other end setting of movable grip block extends out boss, and the outer face and the working roll bearing block that extend out boss are adjacent; The inner face that extends out boss and working roll fixedly roller bending block end face vertical coordinate; The working roll of one side fixedly arranges servo-cylinder in roller bending block central horizontal counterbore, and the working roll of opposite side fixedly arranges horizontal hydraulic cylinder in roller bending block central horizontal counterbore; The piston rod of servo-cylinder and hydraulic cylinder is all through movable grip block axis through-hole separately and be fixed on the outer face that movable grip block is adjacent with bearing block; The periphery of horizontal counterbore, fixedly roller bending block is corresponding that four guiding counterbores parallel with horizontal counterbore are set for movable grip block and working roll, horizontally-guided bar one end contacts with guiding counterbore dilapidated walls, and the other end passes guiding counterbore and is fixed on the outer face that movable grip block is adjacent with bearing block; The piston rod of servo-cylinder and horizontal hydraulic cylinder and the guide post external part that respectively leads in the counterbore all outer face adjacent with bearing block with movable grip block are mutually concordant; Piston rod is provided with screw thread with guide post with one end that movable grip block is connected, and by nut, guide post and piston rod is fixed together with the movable grip block in left side respectively; Between movable grip block axis through-hole and each piston rod, oil cylinder sliding sleeve is set, between guiding counterbore and guide post separately, guide post sliding sleeve is set; Horizontal hydraulic cylinder pressure is set to fixed value, and servo-cylinder is set to move horizontally according to the roller that pushes the work forward of the horizontal offset distance action between working roll and frame central line.

3. the independent changing rig of upper intermediate calender rolls according to claim 1 and 2, is characterized in that: guide post vertically arranges and pass movable rail, when movable rail is risen, by guide post, is vertically led.