CN202123103U

CN202123103U - Rolling mill

Info

Publication number: CN202123103U
Application number: CN 201120159277
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: 2012-01-25
Anticipated expiration: 2021-05-18

Abstract

The utility model discloses a rolling mill frame structure for a piece of steel rolling equipment, comprising first and second mill rolls disposed on first and second bearing seat assemblies, wherein one end of a vertical pole is connected with a rolling mill stand, and the other end of the vertical pole is connected with an upper cross beam; the first bearing seat assembly composes a limit mechanism for limiting the first bearing seat assembly to displace in an up-and-down direction and move along the axial direction of the mill roll or along the advancing direction of a rolled material by the vertical pole and/or the rolling mill stand; a pressing oil cylinder for pushing the upper cross beam and the second bearing seat assembly to be separated is disposed between the upper cross beam and the second bearing seat assembly; and the first and second bearing seat assemblies are adjacent with each other, and between the opposite end surfaces thereof, a spring for pushing the two bearing seat assemblies to be separated is disposed; the structure is formed by assembling separate components, and the rigidity of the frame is strong; and a rolling mill for implementing a reliable location on the bearing seat assemblies and convenient to assemble is provided.

Description

Milling train

Technical field

The utility model 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 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.

The utility model content

It is strong that the purpose of the utility model provides a kind of housing rigidity that is made up of the separating component assembling, bearing block assembly implemented the milling train of reliably locating, being convenient to assemble.

For realizing above-mentioned utility model purpose; The utility model has adopted following technical scheme: a kind of milling train; 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: the clutch shaft bearing holder assembly column and/or mill stand constitute limit the displacement of clutch shaft bearing holder assembly above-below direction, along roll mandrel to or the position-limit mechanism that moves along rolling material direct of travel; Be provided with between entablature and second bearing block assembly and promote the down pressing oil cylinder that both separate, be provided with between the adjacent one another are and opposing end faces of described first and second bearing block assembly and promote the spring that both separate.

Can know by technique scheme; The fixed-site that the clutch shaft bearing holder assembly promptly is positioned at the bearing block assembly of bottom is by column, mill stand or independence or cooperatively interacts and realize; Like this above-below direction that defines the clutch shaft bearing holder assembly reliably, roll mandrel to and the displacement of the direct of travel of rolling material by operative constraint after; Again the corresponding free degree of second bearing block assembly is implemented constraint; So just can guarantee roll roller spacing and axial location confirm that it is the prerequisite that rolling accuracy is guaranteed that the position between described first and second bearing block assembly is determined; The utility model has not only been implemented effectively fixing to the position of first and second bearing block assembly, and it is also very convenient to change roll behind the constraint relief.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is first and second bearing block assembly assembling sketch map;

Fig. 3 is the vertical view among Fig. 2;

Fig. 4 is that column rotates the deployed condition sketch map;

Fig. 5 is the structural representation of column;

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

The specific embodiment

Line rod sheet material adds man-hour, and the non-deformability that rolling accuracy not only depends on roll is a 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 utility model is exactly to propose new aspect the fixed structure of rigidity of frame structure and frame breaker roll and the obvious results scheme.Below specify.

As shown in Figure 1; A kind of milling train; Comprise first and second roll 30A, the 40A 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, clutch shaft bearing holder assembly 30 column 20 and/or mill stand 10 constitute limit the 30 above-below direction displacements of clutch shaft bearing holder assembly, along roll mandrel to or the position-limit mechanism that moves along rolling material direct of travel; Be provided with between entablature 50 and second bearing block assembly 40 and promote the down pressing oil cylinder 80 that both separate, be provided with between the adjacent one another are and opposing end faces of described first and second bearing

block assembly

30,40 and promote the spring 70 that both separate.

Realize that by column 20, mill stand 10 or independence or cooperation this directly have remarkable advantage simple in structure, that the location is convenient and reliable, restraining force is big through

column

20,10 pairs of clutch shaft bearing holder assembly 30 schemes of mill stand to the constraint of the corresponding free degree of clutch shaft bearing holder assembly 30 in the such scheme.Second bearing block assembly 40 places between down pressing oil cylinder 80 and the spring 70, so the constraint that its above-below direction receives also is better way, and the position of first and

second roll

30A, 40A has just been confirmed reliably like this.

The middle hypomere position of column 20 is provided with the prone step surface 21 of plate, constitutes 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; 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 and hypomere 22c intersection form step surface 21; The plate face level of step surface 21 or oblique downward; During assembling; Stretching column 20 makes the length suitably stretcher strain thereupon between the junction of step surface 21 and its lower end and mill stand 10, and the shaft of this step surface below 21 is under the extended state and by this step surface 21 and is depressed on the bearing block assembly 30, and the size of this preload pressure is determined by the deflection that drawn of column 20.Has only the outside impulse force that receives when bearing block assembly 30 the pretightning force of being drawn distortion to provide greater than column 20; Beating of bearing block assembly 30 just can occur; The utility model acts on the bearing block assembly 30 with regard to providing suitable preload pressure; Under the supporting role of mill stand 10, bearing block assembly 30 is located reliably and is fixing simultaneously.

Preferred version is that the plate face level of step surface 21 is downward, can provide to greatest extent like this to act on preload pressure on the bearing block assembly 30, and the processing of column 20 is also very convenient.

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 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.

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 the location of first and second bearing

block assembly

30,40 provides the basis, location.

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.

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 exit side is provided with inclined-plane 24; To cylindrical section 22d transition, the lower surface of entablature 50 is provided with the inclined-plane that coincide with inclined-plane 24 from square column section 22b on inclined-plane 23.

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 between the upper end of described pole face 23 and the cylindrical section 22e towards the step surface 25 of milling train rear side below;

Step surface

25 and 50～80 ° of horizontal plane angles are preferably 60 °.This angle can guarantee that the dismounting roll is as the criterion.Described step surface 25 is to be provided with for the aperture that limits column 20 rotating opening; In conjunction with Fig. 1,2; Column 20 separated rotary that are positioned at the same end of roll are to the appropriate location, and step surface 25 will contact with the suitable position of mill stand 10, and column 20 just is supported on this aperture position; Column 20 will separate with roll bearing holder assembly 30 this moment, and 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; Be meant that step surface 25 has any different because of the position of column 20 is different; Promptly 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 like the sword head direction among Fig. 1,6.

The square column section 22b cylinder respect to one another in described column 20 stage casings is provided with guide-track groove 26, the second bearing block assemblies of arranging along column 20 length directions 40 and is positioned at this guide-track groove 26 grooves.The bottom land that is positioned at two guide-track grooves 26 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 26 is the displacement on the length direction of column.

The spring 70 that is provided with between the adjacent one another are and opposing end faces of described first and second bearing

block assembly

30,40 is stage clip; Be provided with on the entablature 50 and drive the down pressing oil cylinder 80 that described two bearing bracket assembly 40 moves, described spring 70 cooperates the governor motion that constitutes first and second bearing

block assembly

30,40 spacings with down pressing oil cylinder 80.

Preferred version is: described spring 70 comprises the different and stack placement of first and

second dish spring

71,72, two

dish springs

71,72 rigidity of arranging perpendicular to first and second bearing

block assembly

30,40 adjacent faces.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 80; 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 down pressing oil cylinder 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.

Claims

1. milling train; Comprise first and second roll (30A), (40A) 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: clutch shaft bearing holder assembly (30) column (20) and/or mill stand (10) constitute limits clutch shaft bearing holder assembly (30) above-below direction displacement, along roll mandrel to or the position-limit mechanism that moves of the rolling material direct of travel in edge; Be provided with between entablature (50) and second bearing block assembly (40) and promote the down pressing oil cylinder (80) that both separate, between the adjacent one another are and opposing end faces of described first and second bearing block assembly (30), (40) spring (70) that promotes both separation is set.

2. milling train according to claim 1; It is characterized in that: the middle hypomere position of column (20) is provided with the prone step surface of plate (21), constitutes 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; 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.

3. milling train according to claim 1 and 2; It is characterized in that: the hypomere (22c) below 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; 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.

4. milling train according to claim 1 and 2; 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 cooperate and constitute restriction clutch shaft bearing holder assembly (30) along the axially movable position-limit mechanism of roll.

5. milling train according to claim 1 and 2; 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.

6. milling train according to claim 1 and 2; 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); The upper end that square column section (22b) is positioned at the cylinder of material exit side is provided with inclined-plane (24), and inclined-plane (23) to cylindrical section (22d) transition, the lower surface of entablature (50) is provided with the inclined-plane (51) that coincide with inclined-plane (24) from square column section (22b).

7. milling train according to claim 1 and 2; It is characterized in that: 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 between the upper end of described pole face (23) and the cylindrical section (22e) towards the step surface (25) of milling train rear side below; Step surface (25) and 50～80 ° of horizontal plane angles are preferably 60 °.

8. milling train according to claim 2; 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 (26), and second bearing block assembly (40) is positioned at this guide-track groove (26) groove.

9. according to claim 1 or 2 or 8 described milling trains; It is characterized in that: the spring (70) that is provided with between the adjacent one another are and opposing end faces of described first and second bearing block assembly (30), (40) is a stage clip; Be provided with on the entablature (50) and drive the down pressing oil cylinder (80) that described two bearing bracket assembly (40) moves, described spring (70) cooperates the governor motion that constitutes first and second bearing block assembly (30), (40) spacing with down pressing oil cylinder (80).

10. milling train according to claim 9; It is characterized in that: described spring (70) comprises first and second dish spring (71), (72 of arranging perpendicular to first and second bearing block assembly (30), (40) adjacent face), and two dish springs (71), (72) rigidity is different and stack is placed.