WO2012155853A1 - Rolling mill frame - Google Patents

Abstract

Disclosed in the present invention is a rolling mill frame structure for use in steel rolling equipment, comprising: an upright post (20), a rolling mill base (10) an upper crossbeam (50). A hinged shaft (60) is disposed on one end of the upright post and is hinge-connected to the rolling mill base; the other end of the upright post passes through the upper crossbeam (50) and is tightly fastened by a nut. The rolling mill frame structure is composed of separate parts, provides for a rigid frame, and is easy to assemble.

Description

 Rolling mill rack

 Technical field

 The invention relates to a rolling mill device, in particular to a frame structure of a rolling mill.

 Background technique

 Prior art The processing of wire rods is mostly made by rolling mills. The rolling mill can be divided into a arch-type frame, a cantilever frame or a profile-welded frame-type frame according to its structure. The adjustment and control of the roll spacing directly leads to the size of the product to be rolled, and the product to be rolled The dimensional accuracy is dependent on the overall rigidity of the mill stand and rolls, the accuracy of the rolls and the material selection. At present, in the rolling mill of the arch-type frame and the cantilever frame, the vertical installation of the arch-type frame is taken as an example, and the deformation in the up-and-down direction is large and difficult to control because The bearing housings are fixed to the bottom support of the arch-type frame by bolts. The lower bearing seat is usually placed on the upper beam so that the arched frame is located at the bottom support and upper part during rolling. Between the beams The column is stretched and deformed by the tensile force throughout its length, and its deformation elongation is large; for the cantilever frame, the deformation of the column is basically similar. That is to say, the rigidity of the rolling mill frame is insufficient, and the deformation of other components is large, and the accumulated error is large, which is difficult to meet the rolling quarter requirement.

A patent document entitled 'Steel Rolling Mill with Supporting Roller Body with Hydraulic Lowering Device' (Publication No. CN101658862A), the rolling mill frame comprising a lateral frame 10 at the upper portion, a lower frame 12-1 at the lower portion, and The column 1 located between the two can be regarded as a arch-type frame, in which the column is elongated and deformed within the total length of the column during operation.

The patent document entitled 'Roller Combination Rack' (Publication No. CN2796875Y) has a frame comprising upper and lower cross members 1, 4 and respective columns 2 connecting the two, and between the upper and lower beams 1, 4 and the column 2 The rod 8 and the nut 9 are connected such that the column 2 is subjected to compressive stress, and the structure has a drawback in that the positioning between the upper and lower beams 1, 4 and the column 2 in the direction perpendicular to the column 2 cannot satisfy the requirement because The pressure provided between the upper and lower beams 1, 4 and the column 2, maintaining the position perpendicular to the column 2 depends on the friction between each other, which is extremely unreliable; in addition, due to the rod 8 and The structure of the connection of the nut 9 is itself limited, and the pre-tightening force provided is very limited. Once the external force during the rolling process cancels the pre-tightening force provided by the rod 8 and the nut 9, it may lead to the upper and lower beams 1 in severe cases. 4 and the column 2 are separated from each other, let alone the rolling precision.

The patent document entitled "The roll gap adjustment system of the frameless rolling stand" (Publication No. CN1108975A) comprises an upper left-handed threaded section 22a, an intermediate cylindrical section 22b and a lower right-handed threaded section 22c. The screw 12, the adjacent first and second bearing block assemblies are connected to each other by a pair of identically configured screws 12, and the cylindrical section 22b in the middle of the screw 12 is axially fixed relative to the frame member 28 and is journaled so as to be in the frame member. Rotating within 28, the frame member 28 itself is supported on the base 30, and the upper left-handed threaded section 22a and the lower right-handed threaded section 22c are respectively connected to the first and second bearing housing assemblies, in fact, the first and second bearing housing assemblies are simultaneously Approach or separate motion to achieve adjustment of the roll gap. The disadvantage of this solution is that when the screw 12 is subjected to the tensile force, the entire length of the rod is elongated and deformed, and the rigidity thereof is poor; the lower end of the screw 12 is drooping, and the second roller 14 on the second bearing housing assembly is subjected to the line during rolling. When the impact load of the bar travels, the lower end of the screw 12 is also bent and deformed, which causes the displacement of the first and second rolls to be displaced, which seriously affects the rolling precision.

Another significant drawback of the above solution is that it is difficult to remove the column and implement the roll change, which is not only difficult to operate, but also requires re-assembly and positioning of the column.

 Summary of the invention

 SUMMARY OF THE INVENTION It is an object of the present invention to provide a rolling mill which is assembled by a separate component and which is rigid and easy to assemble.

 In order to achieve the above object, the present invention adopts the following technical solutions: The rolling mill frame comprises a column, a rolling mill stand and an upper beam, wherein one end of the column is hinged to the rolling stand by an articulated shaft, and the other end of the column passes through the upper beam and is locked by a nut.

 It can be seen from the above scheme that one end of the column passes through the upper beam and is locked by a nut to connect, and the other end is The mill stand is hinged by an articulated shaft. This connection is rigid and due to the end of the column The rolling mill stand is hinged. When the roll is disassembled and loaded, the lock nut between the column and the upper beam can be loosened, and the column is rotated around the hinge axis, so that the opposite columns are inclined to open and separate from each other. In the meantime, the separation opening degree is appropriate to meet the dismantling and loading space of the rolls. Thereby, the disassembly and assembly process of the rolls is realized.

 DRAWINGS

 Figure 1 is a schematic view of the structure of the present invention;

 Figure 2 is a left side view of Figure 1;

 3 is a schematic structural view of a column 20;

 Figure 4 is a left side view of Figure 3;

 Figures 5, 6, and 7 are schematic views of the state of the roll changing process.

 detailed description

When processing the bar sheet, the rolling precision depends not only on the deformation resistance of the roll, that is, the rigidity, but also the rigidity of the frame of the rolling mill and the reliability of the fixed structure of the frame to the roll. The invention proposes a new and effective solution in the rigid structure of the frame and the fixed structure of the frame to the roll. The details are as follows.

 Referring to Figures 1, 2, and 5, the rolling mill frame as a whole includes a column 20, a rolling stand 10 and an upper beam 50, the column One end of 20 is hinged to the mill stand 10 by an articulated shaft 60 which passes through the upper cross member 50 and is locked by a nut 70. Nut for locking 70 Hydraulic nuts are used to achieve reliable joint strength and reduce labor labor during assembly. When disassembling and loading the roller, the nut 70 can be removed first and lifted off the upper beam 50 to rotate the column 20 The two are separated from each other, and the space for loading or unloading the roll is left. After the roll is replaced, the column 20 is rotated to be in the position of the roll, and the upper beam 50 is mounted and the nut is locked. Just fine.

 The column 20 of the present invention has a basic structural portion for positioning the roll and connecting to the roll stand 10, which will be specifically described below.

 The column 20 is provided with a stepped surface 21 and a parallel portion of the face 23, and the stepped surface 21 and the mutually parallel face 23 There is a cylindrical section 22e between which the upper end of the face 23 and the cylindrical section 22e form a stepped surface 25, and the stepped surface 25 faces the rolling mill in front of the traveling direction of the member to be rolled, and the lower side of the rear side, the stepped surface 25 The angle to the horizontal plane is 50~8 0 °, preferably 60°. This angle ensures that the disassembly roller is correct. The step surface 21 and the rolling stand 10 A portion that accommodates the roll chock assembly is formed therebetween, thus defining the displacement of the roll in the length direction of the post. The step surface 25 is set to limit the opening degree of the rotation of the column 20, and is combined with FIG. 3 and FIG. 5, the column 20 is rotated to the appropriate position, the step surface 25 will be in contact with the appropriate portion of the rolling stand 10, and the column 20 is supported at the opening position, at which time the column 20 It will be separated from the roll chock assembly, and the disassembly and assembly process of the roll can be conveniently carried out at this time.

 The step surface 25 faces the rolling mill in front of and behind the outer side of the workpiece to be rolled, and refers to the step surface 25 due to the column 20 The positions are different and different, that is, four columns 20 have two on the feed side of the rolls, and the other two columns 20 are located on the discharge side of the rolls; the step faces on the two columns 20 on the feed side of the rolls 25 Facing the front-down direction of the feed side of the roll, the step surface 25 on the two columns 20 on the discharge side of the roll faces the rear-down direction of the discharge side of the roll, as shown in Figs. The direction of the sword head is the direction of travel of the piece to be rolled.

 The lower section 22c below the stepped surface 21 of the column 20 has mutually parallel face faces 23, and the face 23 The lower section 22c is located in the groove body 11 of the upward direction of the rolling mill stand 10, and the spacing between the mutually parallel two faces 23 coincides with the groove width of the groove body 11, and the lower section 22c is perpendicular to the axial direction of the roll. An articulated shaft 60 is disposed between the lower end and the trough body 11, and the hinge shaft 60 is parallel to the axis of the roll. The cavity area of the trough 11 should ensure that the end of the column 20 is inserted therein, and the column can be provided. 20 Turn the required space. The spacing between the two faces 23 coincides with the groove width of the groove 11 to define the displacement of the column 20 in the axial direction of the roll, which is the first and second bearing block assemblies 30, 40. The positioning provides the basis for positioning.

 A hole 26 is formed in the rod end portion of the face 23 on the column 20, and the hole 26 and the hinge shaft 60 form an articulated fit. 26 is perpendicular to the plane in which the face 23 is located. The above structure ensures the reliability and rigidity of the cooperation of the column 20 with the rolling stand 10, that is, the column 20 is only hinged with respect to the rolling stand 10 The shaft core of 60 is possible to rotate. This is the fitting relationship when disassembling the rolls. The degrees of freedom in other directions are limited. It is also because the column 20 is effectively positioned to reliably position the roll chocks.

 Referring to the drawings, a section of the column below the stepped surface 21 of the column 20 is located on the first housing assembly 30. The two cooperate to form a limiting mechanism for restricting the movement of the first bearing block assembly 30 along the axial direction of the roll. Preferably, the opening direction of the groove 31 is directed to the front and rear direction of the traveling direction of the rolled material, so that the column can be conveniently realized. 20 Cooperate and separate from slot 31. This is achieved by axial engagement of the post 20 with the first chock assembly 30.

 The end face of the first bearing block assembly 30 has an inverted shape and is opposite to the rolling stand 10 The upper concave region constitutes a stop mechanism that limits the movement of the first bearing block assembly 30 in the direction of travel of the rolled material. This is through the first bearing block assembly 30 and the mill stand 10 The cooperation achieves positional positioning along the direction of travel of the rolled material.

 The above structure is to realize the first bearing block assembly 30 The displacement of the upper and lower, left and right, and front and rear directions and the rotation of the corresponding direction realize the reliable positioning of the first bearing block assembly 30.

 The frame is not only for the first housing assembly 30 Achieving a reliable positioning can also be understood as the positioning of the lower bearing block assembly and, in addition, the positioning of the second bearing block assembly 40, ie the upper bearing block assembly. The specific adopted scheme is the square column segment of the middle section of the column 20 22b The mutually opposite cylinder faces are provided with rail grooves 27 arranged along the length of the column 20, and the second bearing block assembly 40 is located in the groove of the rail groove 27. This is for the second housing assembly 40 The positioning achieved in the axial direction of the rolls provides structural assurance for adjustment and positioning of the roll spacing of the first chock assembly 30.

 In general, the upper section of the column 20 is a cylindrical threaded section 22a, which is for the purpose of facilitating the same upper beam 50. The middle section is a square column section 22b having a square cross section and a lower section 22c below the square column section 22b, and a step surface 21 is formed at a boundary between the square column section 22b and the lower section 22c, and the step surface 21 The surface of the plate is horizontally or obliquely downward, and the function of the stepped surface 21 is to provide the upward movement of the first bearing block assembly 30, and the cylindrical shape of the lower portion 22c can be conveniently realized with the groove 31. The mating state is placed or disengaged, and the axial displacement of the first chock assembly 30 can be defined when the lower section 22c is located within the slot 31.

 The upper section of the column 20 is provided with a cylindrical section 22d between the cylindrical thread section 22a and the square column section 22b, and the cylindrical section 22d is mated with the hole in the upper beam 50, and the square column section 22b is provided with a slope 24 at the upper end of the cylinder on the material feeding and discharging side, and the slope 24 is from the square column section 22b to the cylinder section 22d In the transition, the lower end surface of the upper beam 50 is provided with a groove portion 51 which coincides with the upper end of the square column portion 22b including the inclined surface 24. One side groove wall of the groove portion 51 of the upper beam 50 is a sloped surface and a slope 24 anastomosis; the other side groove wall is a vertical plane and fits flush with the cylindrical surface of the square column section 22b for setting the rail groove 27, so that the upper end of the column 20 can be accurately positioned, and the four columns 20 The rail grooves 27 provided on the cylinders whose upper ends are positioned opposite each other are accurately positioned, thereby achieving accurate positioning of the second bearing block assembly 40.

 The square column section 22b is provided with a slope on the upper end of the cylinder on the material inlet and outlet sides. 24, specifically, the column 20 located on both sides of the roll is provided with a slope 24 on one side, in other words, a slope is provided on the outer side of the column 20 at the front end of the roll. 24, a slope 24 is provided on the outer side of the column 20 at the rear end of the roll, and the opposite surface of the two opposite columns 20 is a plane conforming to the vertical plane, as shown in Figs. 2, 3 and 4.

Claims (9)

1. A rolling mill frame comprises a column (20), a rolling mill stand (10) and an upper beam (50), characterized in that: one end of the column (20) is connected by an articulated shaft (60) and a rolling stand (10) ), the other end of the column (20) passes through the upper beam (50) and is locked by a nut.
2. The rolling mill according to claim 1, characterized in that a stepped surface (21) of the upright (20) and a mutually parallel face (23) have a cylindrical section (22e), the face ( A step surface (25) is formed between the upper end of the 23) and the cylindrical section (22e), the step surface (25) faces the rolling mill in front of the traveling direction of the member to be rolled, and the lower side of the rear side, and the angle between the step surface (25) and the horizontal plane is 50. ~80°, preferably 60°.
3. The rolling mill stand according to claim 1, characterized in that the lower section (22c) below the stepped surface (21) of the upright (20) has mutually parallel face faces (23), the face (23) and The axial direction of the roll is perpendicular, and the lower section (22c) is located in the groove body (11) of the rolling mill stand (10), and the spacing between the two parallel faces (23) and the groove body (11) The groove width is matched, and an articulated shaft (60) is disposed between the lower end of the lower section (22c) and the groove body (11), and the hinge shaft (60) is parallel to the axis of the roll.
4. The rolling mill stand according to claim 1, characterized in that: under the step surface (21) of the column (20), a section of the cylinder (31) is formed on the first bearing block assembly (30). The two cooperate to form a limiting mechanism that limits the movement of the first bearing block assembly (30) in the axial direction of the roll.
5. The rolling mill stand according to claim 1, characterized in that the end face of the first bearing block assembly (30) has an inverted shape and is concave with the rolling stand (10). The area constitutes a limit mechanism that limits the movement of the first bearing block assembly in the direction of travel of the rolled material.
6. The rolling mill stand according to claim 1, characterized in that: the upper section of the upright column (20) is a cylindrical thread section (22a), the middle section is a square column section (22b) having a square section, and the square column section (22b) In the lower stage (22c) below, a stepped surface (21) is formed at the junction of the square column section (22b) and the lower section (22c), and the surface of the stepped surface (21) is horizontally or obliquely downward.
7. The rolling mill stand according to claim 2 or 3, characterized in that the rod end portion of the column (20) on the column (20) is provided with a hole (26), a hole (26) and an articulated shaft ( 60) Forming an articulated fit, the aperture (26) being perpendicular to the plane in which the face (23) is located.
8. The rolling mill stand according to claim 1 or 6, wherein the upper section of the column (20) is provided with a cylindrical section (22d) between the cylindrical thread section (22a) and the square column section (22b). The cylindrical section (22d) is mated with the hole in the upper beam (50), and the square column section (22b) is provided with a slope (24) at the upper end of the cylinder on the feeding and discharging side of the material, and the inclined surface (24) is self-side The column section (22b) transitions to the cylindrical section (22d), and the lower end surface of the upper beam (50) is provided with a groove portion (51) which coincides with the upper end of the square column section (22b) including the inclined surface (24).
9. The rolling mill stand according to claim 1 or 6, characterized in that the square column sections (22b) of the middle section of the uprights (20) are provided with guide rails arranged along the longitudinal direction of the uprights (20) on opposite cylinder faces. The groove (27), the second bearing block assembly (40) is located in the groove of the rail groove (27).

Images