CN102310079A

CN102310079A - Intelligent rolling mill

Info

Publication number: CN102310079A
Application number: CN201110129236A
Authority: CN
Inventors: 娄霆; 熊化平; 袁浩
Original assignee: Hefei Baisheng Science and Technology Development Co Ltd
Current assignee: Hefei Baisheng Science and Technology Development Co Ltd
Priority date: 2011-05-18
Filing date: 2011-05-18
Publication date: 2012-01-11
Also published as: WO2012155855A1

Abstract

The invention discloses an intelligent rolling mill used for steel rolling equipment. The intelligent rolling mill comprises a first mill roll and a second mill roll which are arranged on a first bearing seat component and a second bearing seat component, a roller spacing adjusting mechanism which is used for adjusting the space between the first bearing seat component and the second bearing seat component, and a mill roll axial adjusting mechanism, wherein one end of a vertical post is connected with a rolling mill stand, and the other end of the vertical post is connected with an upper horizontal beam; the roller spacing adjusting mechanism comprises a hydraulic cylinder and a spring, wherein the hydraulic cylinder is arranged on the upper horizontal beam and pushes downwardly the second bearing beat component, and the spring is supported between the first bearing seat component and the second bearing seat component; a hydraulic motor or a servo motor is selected as the power source of the mill roll axial adjusting mechanism; and a controller outputs a control signal to drive the hydraulic motor or the servo motor to rotate and controls the control loop of the hydraulic cylinder. The rolling mill disclosed by the invention is the intelligent rolling mill formed by assembling separation components, has strong rack rigidity and is beneficial to the roller spacing adjustment and a mill roll axial adjustment.

Description

A kind of intelligent rolling mill

Technical field

The present invention relates to steel rolling equipment, specifically is exactly the rack construction of milling train.

Background technology

Mostly the processing of prior art center line bar is to adopt mill milling to form.And milling train come to divide with regard to its structure and generally can be divided into memorial archway open frame, cantilevered frame or be welded as the memorial archway open frame by section bar; The adjusting of roll shop building distance and control directly cause treating the size of rolling product, treat that rolling dimensional accuracy of products relies on the precision and the selection of the integral rigidity of rolling-mill housing and roll, roll again.At present; No matter in the milling train of memorial archway open frame, cantilevered frame; With the vertical example that is installed as of memorial archway open frame, the distortion of its above-below direction is big, be difficult to control, because step all is to adopt the bolt base part to be fixed on the bottom support bracket of memorial archway open frame; The screwdown gear of top chock normally is arranged on the upper beam; When rolling like this, the memorial archway open frame all receives pulling force and elongation strain at the column between bottom support bracket and the upper beam in its whole length range, and its anamorphic stretching amount is big; For the cantilevered frame, the distortion situation of its column is similar basically.In other words, the insufficient rigidity of rolling-mill housing, the distortion of other parts in addition, the error after the accumulative total is just very big, is difficult to satisfy rolling season requirement.

Name is called the patent documentation of " sheet rolling mill that the backing roll body of roll has the hydraulic pressure hold-down devices " (publication number CN101658862A); Its rolling-mill housing comprises superposed horizontal frame 10, is positioned at the frame underbeam 12-1 of bottom and is positioned at column 1 between the two; Its overall structure can be regarded the memorial archway open frame as, and column wherein all elongation strain can take place in work Shi Qi length overall scope.

Name is called the patent documentation of " composite machine frame of mill " (publication number CN2796875Y); Its frame comprises upper and lower crossbeam 1,4 and each column 2 that connects both, adopts bar 8 to be connected with nut 9 between upper and lower crossbeam 1,4 and the column 2, and column 2 just receives the effect of compression like this; The defective of this structure is; Can't meet the demands perpendicular to the location on column 2 directions between upper and lower crossbeam 1,4 and the column 2, because, the pressure that provides each other between upper and lower crossbeam 1,4 and the column 2; The position of keeping perpendicular to column 2 directions will depend on frictional force each other, and this is extremely insecure; In addition; Because the structure self that bar 8 is connected with nut 9 restriction; Its pretightning force that provides is very limited; In a single day external force in the operation of rolling offset bar 8 and the pretightning force that nut 9 provides, and possibly cause when serious breaking away from each other between upper and lower crossbeam 1,4 and the column 2, with being far from being rolling accuracy.

Name is called the patent documentation of " the roll gap regulating system of no frame mill stand " (publication number CN1108975A); The screw rod 12 that comprises the right-hand thread section 22c of the left-handed thread section 22a on a top, the cylindrical section 22b in the middle of one and a bottom in its structure; First and second adjacent bearing block assembly is interconnected by the identical screw rod 12 of a pair of structure; Thereby the cylindrical section 22b in the middle of the screw rod 12 fixes vertically and makes axle journal with respect to frame spare 28 and in frame spare 28, rotates; Frame spare 28 itself is supported on the pedestal 30; The right-hand thread section 22c of the left-handed thread section 22a on top and bottom links to each other respectively at first and second bearing block assembly, in fact first and second bearing block assembly be do simultaneously near or disengaging movement realize the adjusting of roll gap.The defective of this scheme is: the equal elongation strain of the long scope of its whole bar when screw rod 12 receives tension, and its rigidity is poor; The lower end of screw rod 12 is sagging shape; When second roll 14 on second bearing block assembly receives the shock loading of line bar direction of travel when rolling; The lower end bend by pressure distortion of screw rod 12 causes the operating position of first and second roll to be subjected to displacement, and has a strong impact on rolling accuracy.

Summary of the invention

The purpose of this invention is to provide the intelligent rolling mill that a kind of housing rigidity that is made up of the separating component assembling is strong, be convenient to roll spacing and roll axial adjustment.

For realizing the foregoing invention purpose; The present invention has adopted following technical scheme: a kind of intelligent rolling mill; Comprise first and second roll that is arranged on first and second bearing block assembly; One end of column links to each other with mill stand, the other end links to each other with entablature; It is characterized in that: milling train also comprises the roll spacing governor motion of regulating first and second bearing block assembly spacing and the governor motion of roll axial adjustment, and described roll spacing governor motion comprises and is arranged at the hydraulic cylinder that presses down second bearing block assembly on the entablature and is supported in the spring between first and second bearing block assembly; The power source of roll axial regulating mechanism is selected hydraulic motor or servomotor for use; Controller output control signal drives hydraulic motor or servomotor rotates, and the control loop of control hydraulic cylinder.

There is technique scheme to know; The power source of roll axial regulating mechanism is selected hydraulic motor or servomotor for use, and the upper and lower end face of second bearing block assembly realizes spacing by hydraulic cylinder and spring respectively and support, and this shows; During the hydraulic cylinder dead spring; The distance of the relative clutch shaft bearing holder assembly of second bearing block assembly will more approaching, on the contrary the spacing between second bearing block assembly and the clutch shaft bearing holder assembly will increase, the action of above-mentioned hydraulic motor or servomotor, hydraulic cylinder is exported the control signal driving by controller; So just realized automatically, intelligence regulates, and overcome in the prior art defective that could implement adjusting after must waiting facilities shutting down.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the A-A cutaway view among Fig. 1;

Fig. 4 is the partial enlarged drawing among Fig. 1;

Fig. 5 is the structural representation of column;

Fig. 6 is the left view of Fig. 5;

Fig. 7 is the structural representation of second bearing block.

The specific embodiment

The line bar adds man-hour, relies on the notch of offering on the rolling mill roll be fitted to each other that cooperatively interacts, if notch misplaces in other words each other notch position each other not fully over against, quality problems such as cross sectional shape and dimensional discrepancy will appear in institute's rolled products; In addition.Because roll will unavoidably be worn in the operation of rolling, phenomenons such as notch distortion occur, will roll out waste product when the problems referred to above are serious.In view of this, need carry out a pair roller that is fitted to each other axial adjustment with the notch that cooperatively interacts guaranteeing to offer on the roll each other over against or regulate the roll gap of roll.Roll carries out axial adjustment and usually a roll is carried out axial restraint, and another roll carries out axial adjustment, and this is a kind of axial adjustment scheme comparatively simple, that realize easily; The adjusting of roller spacing also is similar, a promptly fixing roll and regulate the position of another roll.

A kind of intelligent rolling mill; Comprise first and

second roll

31,41 that is arranged on first and second bearing

block assembly

30,40; One end of column 20 links to each other with mill stand 10, the other end links to each other with entablature 50; Milling train also comprises the roll spacing governor motion of regulating first and second bearing

block assembly

30,40 spacings and the governor motion of roll axial adjustment, and described roll spacing governor motion comprises that being arranged at entablature 50 presses down the hydraulic cylinder 80 of second bearing block assembly 40 and be supported in first and second bearing block assembly 30, the spring between 40 70; The power source of roll axial regulating mechanism is selected hydraulic motor or servomotor for use; Controller output control signal drives hydraulic motor or servomotor rotates, and the control loop of control hydraulic cylinder 80.

Adopt hydraulic motor or servomotor and hydraulic cylinder 80 to be that as the effect of power or executing agency the source that drives signal can be provided by controller; As long as having exported, controller drives the adjustment signal; Hydraulic motor or servomotor and hydraulic cylinder 80 will be in time, response accurately, and especially the accuracy of its adjustment and reliability all can be guaranteed, owing to steel its periphery in the operation of rolling is a prohibited security zone; Operating personnel can't realize online adjustment in the operation of rolling; Scheme provided by the invention provides possibility for realizing online adjusting, has significantly improved the control and the rolling accuracy of steel rolling equipment, and the reduction that is not merely percent defective provides assembling to ensure; And in time find that product is whether overproof and can entangle rapidly the difference adjustment provide maybe, practiced thrift the plenty of time in addition and alleviated working strength of workers.

Main contents as the roll spacing adjustment structure will provide the support of floating reliably for second bearing block assembly 40 exactly; Preferred spring structure among the present invention; Specifically be exactly that described spring 70 comprises and being positioned between first and second

bearing block assembly

30,40 adjacent faces and perpendicular to first and

second dish spring

71,72 of this adjacent face; Different and the stack placement of two dish springs, 71,72 rigidity, as shown in Figure 4.

The coefficient of elasticity different sizes of first and

second dish spring

71,72; At first contraction distortion when the spring 72 that coefficient of elasticity is little receives downforce; Pressing action along with down pressing oil cylinder; Two

spring

71,72 equal contraction distortions are to the appropriate location, and such second bearing block assembly 40 has just been located by the spring 70 of the hydraulic cylinder 60 on top and bottom, and this structure can provide fixing second bearing block assembly 40 of locating reliably of substantially rigid; Guarantee spacing constant of first and second bearing

block assembly

30,40, thereby can guarantee rolling accuracy.

In order to realize the axial adjustment of roller spacing and roll; Its crucial basic premise will guarantee a roll is implemented accurately and reliable localization exactly; The present invention adopts following scheme that clutch shaft bearing holder assembly 30 is implemented the location: the middle hypomere position of described column 20 is provided with the prone step surface 21 of plate; Constitute the position-limit mechanism of clutch shaft bearing holder assembly 30 being implemented the above-below direction displacement of pressure pretensions location between the supporting surface that this step surface 21 and mill stand 10 make progress, and be provided with between mill stand 10 or column 20 and the clutch shaft bearing holder assembly 30 restriction along roll mandrel to or the position-limit mechanism that moves of the rolling material direct of travel in edge.

Like Fig. 5, shown in 6; More concrete scheme is that the epimere of described column 20 is that cylindrical thread section 22a, stage casing are that the cross section is square square column section 22b and the following hypomere 22c of square column section 22b, and square column section 22b and hypomere 22c intersection form step surface 21, the plate face level of step surface 21 or oblique downward; Preferred version is that the plate face level of step surface 21 is downward; Can obtain maximum preload pressure like this, the hypomere 22c of the step surface of described column 20 below 21 has the pole face 23 that is parallel to each other, and pole face 23 is axial vertical with roll; This hypomere 22c is positioned at the cell body 11 that the notch of mill stand 10 makes progress; The spacing that said two pole faces that are parallel to each other are 23 and the groove width of cell body 11 are coincide, and between the lower end of hypomere 22c and the cell body 11 jointed shaft 60 are set, and jointed shaft 60 is parallel with the axle core of roll.

Said cylindrical thread section 22a is in order to be connected with entablature 50, promptly column 20 and entablature 50 are connected as one through hydraulic nut, pole face 23 cooperate with mill stand 10 upper groove bodies 11 qualification column 20 along roll mandrel to the position.

Between described step surface 21 and the clutch shaft bearing holder assembly 30 and or clutch shaft bearing holder assembly 30 and mill stand 10 between be provided with cushion block 80.Just when assembling; Be convenient to earlier bearing block assembly 30 is placed on the mill stand 10; Rotate columns 20 around jointed shaft 60 and make that to be arranged in hypomere ground part cylinder on it be that columniform hypomere 22c is positioned at groove 31; This moment, step surface 21 was higher than the suitable distance in bearing block assembly 30 upper surfaces, and the position is gone in the rotation of being convenient to column 20 like this, and the cushion block 80 of stretching column 20 suitable distortion back placement suitable thickness between step surface 21 and bearing block assembly 30 upper surfaces therebetween; To guarantee column 20 due amount of tension, guarantee the pretension tension according to this.The hypomere 22c of described column 20 cooperates the axial location that defines clutch shaft bearing holder assembly 30 with groove 31.

The end surface shape of described clutch shaft bearing holder assembly 30 is a reversed convex type; And with described mill stand 10 on the concave regions offered constitute the position-limit mechanism that the described clutch shaft bearing holder assembly of restriction moves along rolling material direct of travel, this is to have located along the position of rolling material direct of travel through having realized clutch shaft bearing holder assembly 30 and cooperating of mill stand 10.

The square column section 22b cylinder respect to one another in described column 20 stage casings is provided with guide-track groove 24, the second bearing block assemblies of arranging along column 20 length directions 40 and is positioned at this guide-track groove 24 grooves.

The bottom land that is positioned at two guide-track grooves 24 of second bearing block assembly, 40 same ends constitutes second bearing block assembly 40 spacing along on the rolling material direct of travel; Cell wall then constitute to second bearing block assembly 40 along roll mandrel to spacing, so just realized that direction that second bearing block assembly 40 limits along guide-track groove 24 is the displacement on the length direction of column.

Said structure can be guaranteed the reliability that cooperates and the rigidity of column 20 and mill stand 10; In other words column 20 with respect to mill stand 10 only with jointed shaft 60 the axle core rotate maybe; This is the matching relationship when the dismounting roll; The free degree of other direction all is defined, and also effectively could breaker roll bearing block group be implemented reliable localization behind the location just because of column 20.

The below of the step surface 21 of described column 20 has one section cylinder to be positioned at the groove of offering on the bearing block assembly 30 31, and both cooperate formation restriction clutch shaft bearing holder assembly 30 along the axially movable position-limit mechanism of roll.Like Fig. 5, shown in 6, step surface 21 is that the center plane of symmetry with the pole face 23 that is parallel to each other is arranged symmetrically in pole face 23 both sides, and the center plane of symmetry of said pole face 23 is perpendicular to the axial direction of roll.The pressure that so just can guarantee to act on groove 31 ports is even and symmetrical, has avoided column 20 to receive the moment of flexure effect and buckling phenomenon occurs.

The end surface shape of described clutch shaft bearing holder assembly 30 is a reversed convex type, and with described mill stand 10 on the concave regions offered constitute the position-limit mechanism that the described clutch shaft bearing holder assembly of restriction moves along rolling material direct of travel.This is through having realized clutch shaft bearing holder assembly 30 and cooperating of mill stand 10 location, position along rolling material direct of travel.

Said structure is exactly to have realized the displacement of clutch shaft bearing holder assembly 30 top to bottom, left and right, front and rear directions and the rotation of respective direction, thus the reliable location of having realized clutch shaft bearing holder assembly 30.

Described roll axial regulating mechanism comprises that the countershaft neck place that is positioned at the trunnion outer end on second roll 41 is provided with supplementary bearing 42; The outer ring of supplementary bearing 42 is arranged in the mantle cavity of axial adjustment cover 43; Axial adjustment is overlapped tooth 431 and worm screw 44 formation turbine and worm mechanisms is set on 43 outer rings; The side that axial adjustment is overlapped the tooth 431 of 43 outer rings is provided with external screw thread and regulates the internal thread that is provided with on locating ring 45 inner rings and constitutes the feed screw nut and cooperate; Regulate locating ring 45 and be connected with main bearing seat 40, the outer end of worm screw 44 extends to the outside of adjusting locating ring 45 and links to each other with the output shaft of hydraulic motor or servomotor 46.

Like this; When the output shaft of hydraulic motor or servomotor 46 passes to worm screw 44 with moment of torsion, regulating locating ring 45 is to be connected with main bearing seat 40, so axial adjustment cover 43 also axially moved when rotating; When supplementary bearing 42 outer rings receive the axial thrust of axial adjustment cover 43; Simultaneously because supplementary bearing 42 is selected thrust bearing for use, and then axial thrust is delivered on second roll 41 via supplementary bearing 42, bearing gland again, owing in the bearing gland section the horn-like conical surface cooperates with the trunnion of second roll 41 and the taper transition face between the countershaft neck; Reliable and uniform axial adjustment thrust is provided, realizes the axial adjustment of second roll 41.

Claims

1. intelligent rolling mill; Comprise first and second roll (31), (41) that are arranged on first and second bearing block assembly (30), (40); One end of column (20) links to each other with mill stand (10), the other end links to each other with entablature (50); It is characterized in that: milling train also comprises regulates first and second bearing block assembly (30), the roll spacing governor motion of (40) spacing and the governor motion of roll axial adjustment, and described roll spacing governor motion comprises the hydraulic cylinder that presses down second bearing block assembly (40) (80) that is arranged on the entablature (50) and is supported in the spring (70) between first and second bearing block assembly (30), (40); The power source of roll axial regulating mechanism is selected hydraulic motor or servomotor for use; Controller output control signal drives hydraulic motor or servomotor rotates, and the control loop of control hydraulic cylinder (80).

2. intelligent rolling mill according to claim 1; It is characterized in that: described spring (70) comprises and being positioned between first and second bearing block assembly (30), (40) adjacent face and perpendicular to first and second dish spring (71), (72) of this adjacent face, and two dish springs (71), (72) rigidity is different and stack is placed.

3. intelligent rolling mill according to claim 1; It is characterized in that: the middle hypomere position of described column (20) is provided with the prone step surface of plate (21); Constitute the position-limit mechanism of clutch shaft bearing holder assembly (30) being implemented the above-below direction displacement of pressure pretension location between the supporting surface that this step surface (21) and mill stand (10) make progress, and be provided with between mill stand (10) or column (20) and the clutch shaft bearing holder assembly (30) restriction along roll mandrel to or the position-limit mechanism that moves of the rolling material direct of travel in edge.

4. according to claim 1 or 2 or 3 described intelligent rolling mills; It is characterized in that: the epimere of described column (20) is that cylindrical thread section (22a), stage casing are that the cross section is square square column section (22b) and the following hypomere (22c) of square column section (22b); Square column section (22b) forms step surface (21) with hypomere (22c); The plate face level of step surface (21) or oblique downward, the hypomere (22c) below the step surface (21) of described column (20) has the pole face (23) that is parallel to each other, and pole face (23) is axial vertical with roll; This hypomere (22c) is positioned at the cell body (11) that the notch of mill stand (10) makes progress; The spacing between said two pole faces (23) that are parallel to each other and the groove width of cell body (11) are coincide, and between the lower end of hypomere (22c) and the cell body (11) jointed shaft (60) are set, and jointed shaft (60) is parallel with the axle core of roll.

5. intelligent rolling mill according to claim 1; It is characterized in that: the governor motion of described roll comprises that the countershaft neck place that is positioned at the trunnion outer end on second roll (41) is provided with supplementary bearing (42); The outer ring of supplementary bearing (42) is arranged in the mantle cavity of axial adjustment cover (43); Tooth (431) is set on axial adjustment cover (43) outer ring constitutes turbine and worm mechanism with worm screw (44); The internal thread that is provided with on the side of the tooth (431) of axial adjustment cover (43) outer ring is provided with external screw thread and regulates locating ring (45) inner ring constitutes the feed screw nut and cooperates; Regulate locating ring (45) and be connected with main bearing seat (40), the outer end of worm screw (44) extends to the outside of adjusting locating ring (45) and links to each other with the output shaft of hydraulic motor or servomotor.

6. milling train according to claim 4 is characterized in that: between described step surface (21) and the clutch shaft bearing holder assembly (30) and or clutch shaft bearing holder assembly (30) and mill stand (10) between be provided with cushion block (90).

7. milling train according to claim 4; It is characterized in that: the end surface shape of described clutch shaft bearing holder assembly (30) is a reversed convex type; And with described mill stand (10) on the concave regions offered constitute the position-limit mechanism that the described clutch shaft bearing holder assembly of restriction moves along rolling material direct of travel; Square column section (22b) cylinder respect to one another in described column (20) stage casing is provided with the guide-track groove of arranging along column (20) length direction (24), and second bearing block assembly (40) is positioned at this guide-track groove (24) groove.