CN102327901B

CN102327901B - Rolling mill stand

Info

Publication number: CN102327901B
Application number: CN 201110129247
Authority: CN
Inventors: 娄霆; 熊化平
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: 2013-08-28
Anticipated expiration: 2031-05-18
Also published as: CN102327901A; WO2012155853A1

Abstract

The invention discloses a rolling mill stand structure for steel rolling equipment, which comprises stand columns, mill stands and an upper crossgirder, wherein jointed shafts at one ends of the stand columns are hinged with the mill stands, and the other ends of the stand columns penetrate through the upper crossgirder and are locked by nuts. The rolling mill stand structure is formed by assembling separation components, and a rolling mill is provided with the high-rigidity stand and is convenient to assemble.

Description

Rolling-mill housing

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 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 is subjected to pulling force and elongation strain at the column between bottom support bracket and the upper beam in its whole length range, its anamorphic stretching amount is big; For the cantilevered frame, the distortion situation of its column is similar substantially.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, be positioned at the frame underbeam 12-1 of bottom and be positioned between the two column 1, 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, sill 1,4 and each column 2 of connecting both, on, sill 1,4 and column 2 between adopt bar 8 to be connected with nut 9, column 2 just is subjected to the effect of compression like this, the defective of this structure is, on, sill 1,4 and column 2 between can't meet the demands perpendicular to the location on column 2 directions, because, on, sill 1,4 and column 2 between the pressure that provides each other, keep position perpendicular to column 2 directions and will depend on each other frictional force, 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 the pretightning force that bar 8 and nut 9 provide, may cause when serious upper and lower crossbeam 1,4 with column 2 between disengaging each other, let alone rolling accuracy.

Name is called the patent documentation of " the roll gap regulating system of no frame mill stand " (publication number CN1108975A), the left-handed thread section 22a that comprises a top in its structure, the screw rod 12 of cylindrical section 22b in the middle of one and the right-hand thread section 22c of a bottom, adjacent first, the two bearing bracket 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 rotates in frame spare 28, 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 is respectively at first, the two bearing bracket assembly links to each other, and in fact first, the two bearing bracket assembly is to do simultaneously to approach or disengaging movement realizes the adjusting of roll gap.The defective of this scheme is: the equal elongation strain of 12 tension masterpiece times spent of the screw rod long scope of its whole bar, and its rigidity is poor; The lower end of screw rod 12 is sagging shape, when second roll 14 on second bearing block assembly is subjected to the shock loading of line bar direction of travel when rolling, the bent distortion of also bending of the lower end of screw rod 12 causes the New Year operating position of first and second roll to be subjected to displacement, and has a strong impact on rolling accuracy.

Also there is the remarkable defective of another one in such scheme, and that will take off column exactly implements the roll change difficulty, and the assembling again of not only operating difficulties, and column and location all need to carry out again.

Summary of the invention

The purpose of this invention is to provide the milling train that a kind of housing rigidity that is made of the separating component assembling is strong, be convenient to assemble.

For achieving the above object, the present invention has adopted following technical scheme: a kind of rolling-mill housing, comprise column, mill stand and entablature, it is characterized in that: an end of described column is hinged by jointed shaft and mill stand, and the described column other end passes entablature and by nut check.

By such scheme as can be known, column one end passes entablature and is realized connecting by nut check, and the other end and mill stand are hinged by jointed shaft, this connected mode rigidity is strong, and because column one end and mill stand are hinged, when the demolition, installation roll, can unclamp the locking nut between column and the entablature, rotate column around jointed shaft simultaneously, make column respect to one another be rendered as tilting shape by the state that is parallel to each other and open released state, separation aperture therebetween suitably is advisable with the demolition, installation space of satisfying roll, realizes the dismounting operation of roll thus.

Description of drawings

Fig. 1 is structural representation of the present invention;

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

Fig. 3 is the structural representation of column 20;

Fig. 4 is the left view of Fig. 3;

Fig. 5,6, the 7th, roll change status of processes schematic diagram.

The specific embodiment

Line rod sheet material adds man-hour, and the non-deformability that rolling accuracy not only depends on roll is rigidity, and the while also needs the frame of milling train to possess the reliability of the fixed structure of reliable rigidity and frame breaker roll.The present invention is proposing new and the obvious results scheme aspect the fixed structure of rigidity of frame structure and frame breaker roll.Below specify.

Shown in Fig. 1,2,5, say on the whole that rolling-mill housing comprises and set up post 20, mill stand 10 and entablature 50, one end of described column 20 is hinged by jointed shaft 60 realizations and mill stand 10, and described column 20 other ends pass entablature 50 and locked by nut 70.The nut 70 that is used for locking is selected hydraulic nut for use, can realize reliable bonding strength like this and alleviate hand labor intensity in the assembling process.During the demolition, installation roll, can unload lower nut 70 earlier and hang entablature 50, rotating column 20 makes it be deployed condition separated from one another, reserve the space that takes on or hang out for roll this moment, roll is changed the back that finishes and is rotated column 20 and make it be in cooperation position with roll, refill entablature 50 also locking nut 70 get final product.

Column 20 among the present invention has the basic structure position that breaker roll is implemented the location and is connected with mill stand 10, below specifies.

Pole face 23 positions that described column 20 arranges step surface 21 and is parallel to each other, between step surface 21 and the pole face 23 that is parallel to each other cylindrical section 22e is arranged, constitute step surface 25 between the upper end of described pole face 23 and the cylindrical section 22e, step surface 25 towards milling train be positioned at treat the rolled parts direct of travel forward and backward outside side-lower,

step surface

25 and 50～80 ° of horizontal plane angles, be preferably 60 °, this angle can guarantee that the dismounting roll is as the criterion.Form the position that holds the roll bearing holder assembly between described step surface 21 and the mill stand 10, so just defined the displacement of roll on the strut length direction.Described step surface 25 is to arrange for the aperture that limits column 20 rotating opening, in conjunction with Fig. 3,4,5, column 20 turns to the appropriate location, step surface 25 will contact with the suitable position of mill stand 10, column 20 just is supported on this aperture position, this moment column 20 will with the roll chock components apart, can conveniently implement the dismounting operation of roll this moment.

Described step surface 25 towards milling train be positioned at treat the rolled parts direct of travel forward and backward outside side-lower, refer to that step surface 25 has any different because the position of column 20 is different, namely four columns 20 have two feed sides that are positioned at roll, and other two root posts 20 are positioned at the exit side of roll; Be positioned at step surface 25 on feed side two root posts 20 of roll towards the front lower place of roll feed side to, be positioned at step surface 25 on exit side two root posts 20 of roll towards the back lower place of roll exit side to, be to treat the direct of travel of rolled parts as the sword head direction among Fig. 1,6.

The hypomere 22c of the step surface of described column 20 below 21 has the pole face 23 that is parallel to each other, 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 described two pole faces that are parallel to each other are 23 and the groove width of cell body 11 are coincide, between the lower end of hypomere 22c and the cell body 11 jointed shaft 60 is set, jointed shaft 60 is parallel with the axle core of roll.The vallecular cavity zone of cell body 11 should be able to guarantee that the end of described column 20 inserts in it, can provide column 20 to rotate requisite spaces simultaneously.The spacing that described two pole faces are 23 and the groove width of cell body 11 coincide to limit exactly column 20 roll mandrel to displacement, for first and second

bearing block assembly

30,40 location provide the basis, location.

Hole 26 is offered at the rod end position at pole face 23 places on the described column 20, and hole 26 constitutes hinged the cooperation with jointed shaft 60, and hole 26 is perpendicular to the plane at pole face 23 places.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 may, this is the matching relationship when the dismounting roll, the free degree of other direction all is defined, and could breaker roll bearing block group implement location reliably after also effectively being located just because of column 20.

By reference to the accompanying drawings, the below of the step surface 21 on the described column 20 has one section cylinder to be positioned at the groove of offering on the clutch shaft bearing holder assembly 30 31, both cooperations are construed as limiting clutch shaft bearing holder assembly 30 along the axially movable position-limit mechanism of roll, preferred version is the fore-and-aft direction that the opening direction of groove 31 points to rolling material direct of travel, the cooperation that so just can realize column 20 and groove 31 easily with separate.This is by the cooperate axial location that realize clutch shaft bearing holder assembly 30 of column 20 with clutch shaft bearing holder assembly 30.

The end surface shape of described clutch shaft bearing holder assembly 30 is reversed convex type, and with described mill stand 10 on the concave regions offered be construed as limiting the position-limit mechanism that described clutch shaft bearing holder assembly 30 moves along rolling material direct of travel.This is by 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.

Frame not only will realize reliable location to clutch shaft bearing holder assembly 30, and this also can be understood as the location to the step assembly, in addition, will realize that also to second bearing block assembly 40 be the location of top chock assembly.The square column section 22b cylinder respect to one another that the concrete scheme that adopts is exactly described column 20 stage casings is provided with guide-track groove 27, the second bearing block assemblies of arranging along column 20 length directions 40 and is positioned at this guide-track groove 27 grooves.This be to second bearing block assembly 40 in the location that the roll axial direction is realized, and provide the structure assurance for adjusting and the location with the roller spacing of clutch shaft bearing holder assembly 30.

Say that on the whole the epimere of described column 20 is cylindrical thread section 22a, this is for the ease of the connection with entablature 50; The stage casing is that the cross section is square square column section 22b and the following hypomere 22c of square column section 22b, square column section 22b and hypomere 22c intersection form step surface 21, the plate face level of step surface 21 or oblique downward, the effect of step surface 21 just provides the constraint that moves up of clutch shaft bearing holder assembly 30, the cylinder form of hypomere 22c can realize inserting with groove 31 or separating mated condition easily, and hypomere 22c can limit the axial displacement of clutch shaft bearing holder assembly 30 when being positioned at groove 31.

The epimere of described column 20 is to be provided with cylindrical section 22d between cylindrical thread section 22a and the square column section 22b, this cylindrical section 22d cooperates grafting with hole on the entablature 50, the upper end that square column section 22b is positioned at the cylinder of material charging and discharging side is provided with inclined-plane 24, to cylindrical section 22d transition, the lower surface of entablature 50 is provided with concave part 51 and contains inclined-plane 24 and coincide in the upper end of interior square column section 22b from square column section 22b on inclined-plane 24.One side channel wall of the concave part 51 of entablature 50 is inclined-plane and identical with inclined-plane 24; The opposite side cell wall then cooperates for vertical guide and with concordant the reclining of cylinder that is used for guide-track groove 27 is set on the square column section 22b, can accurately locate the upper end of column 20 like this, the upper end of four root posts 20 guide-track groove 27 that arranges on its cylinder respect to one another that is positioned has just accurately been located, thereby has realized the accurate location to second bearing block assembly 40.

The upper end that described square column section 22b is positioned at the cylinder of material charging and discharging side is provided with inclined-plane 24, refer to that specifically the column 20 that is positioned at the roll both sides just arranges inclined-plane 24 in a side, in other words be exactly the arranged outside inclined-plane 24 that is positioned at the column 20 of roll front end, be positioned at the arranged outside inclined-plane 24 of the column 20 of roll rear end, the opposite face of two-phase column 20 then is the plane consistent with vertical guide, shown in Fig. 2,3,4.

Claims

1. rolling-mill housing, comprise column (20), mill stand (10) and entablature (50), it is characterized in that: an end jointed shaft (60) of described column (20) and mill stand (10) are hinged, and described column (20) other end passes entablature (50) and by nut check; Between the step surface (21) of described column (20) and the pole face (23) that is parallel to each other cylindrical section (22e) is arranged, constitute step surface (25) between the upper end of described pole face (23) and the cylindrical section (22e), step surface (25) towards milling train be positioned at treat the rolled parts direct of travel forward and backward outside side-lower, step surface (25) and horizontal plane angle are 50～80 °.

2. rolling-mill housing according to claim 1, it is characterized in that: the following hypomere (22c) of the step surface (21) of described column (20) has the pole face (23) that is parallel to each other, 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, spacing between described two pole faces (23) that are parallel to each other and the groove width of cell body (11) are coincide, between the lower end of hypomere (22c) and the cell body (11) jointed shaft (60) is set, jointed shaft (60) is parallel with the axle core of roll.

3. rolling-mill housing according to claim 1, it is characterized in that: the groove (31) that the below of the step surface (21) of described column (20) has one section cylinder to be positioned to offer on the clutch shaft bearing holder assembly (30), both cooperations are construed as limiting clutch shaft bearing holder assembly (30) along the axially movable position-limit mechanism of roll.

4. rolling-mill housing according to claim 3, it is characterized in that: the end surface shape of described clutch shaft bearing holder assembly (30) is reversed convex type, and with described mill stand (10) on the concave regions offered be construed as limiting the position-limit mechanism that described clutch shaft bearing holder assembly moves along rolling material direct of travel.

5. rolling-mill housing according to claim 1, 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) intersection, the plate face level of step surface (21) or oblique downward.

6. rolling-mill housing according to claim 1 and 2, it is characterized in that: hole (26) is offered at the rod end position that the pole face (23) on the described column (20) is located, hole (26) constitutes hinged the cooperation with jointed shaft (60), and hole (26) are perpendicular to the plane at pole face (23) place.

7. rolling-mill housing according to claim 1 or 5, it is characterized in that: the epimere of described column (20) is to be provided with cylindrical section (22d) between cylindrical thread section (22a) and the square column section (22b), this cylindrical section (22d) cooperates grafting with hole on the entablature (50), square column section (22b) is positioned at material and advances, the upper end of the cylinder of exit side is provided with inclined-plane (24), to cylindrical section (22d) transition, the lower surface of entablature (50) is provided with concave part (51) and contains inclined-plane (24) and coincide in the upper end of interior square column section (22b) from square column section (22b) on inclined-plane (24).

8. rolling-mill housing according to claim 1 or 5, it is characterized in that: 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 (27), and second bearing block assembly (40) is positioned at this guide-track groove (27) groove.