WO2012155855A1

WO2012155855A1 - Intelligence rolling mill

Info

Publication number: WO2012155855A1
Application number: PCT/CN2012/075660
Authority: WO
Inventors: 娄霆; 熊化平; 袁浩
Original assignee: 合肥市百胜科技发展股份有限公司
Priority date: 2011-05-18
Filing date: 2012-05-17
Publication date: 2012-11-22
Also published as: CN102310079A

Abstract

Disclosed in the present invention is an intelligence rolling mill, which comprises a first roll and a second roll (31, 41) arranged on a first bearing seat assembly and a second bearing seat assembly (30, 40). One end of an upright post (20) is connected with a rolling mill base (10) and the other end is connected with an upper cross beam (50). The rolling mill also includes a roll spacing adjusting mechanism for adjusting the spacing between the first bearing seat assembly and the second bearing seat assembly and an adjusting mechanism for adjusting the roll in the axial direction. The roll spacing adjusting mechanism includes a hydraulic cylinder (80) arranged on the upper cross beam for pressing the second bearing seat assembly and a spring (70) supported between the first bearing seat assembly and the second bearing seat assembly. The power supply of the axial adjusting mechanism of the roll is selected from a hydromotor or a servomotor. The control signal outputted by a controller drives the hydromotor or the servomotor to rotate and controls the control loop of the hydraulic cylinder. The intelligence rolling mill is assembled with the separating parts and the framework has high rigidity, thereby facilitating the adjustment of the roll spacing and the axial adjustment of the roll.

Description

Intelligent rolling mill

技术领域 Technical field

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

背景技术 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, and the rolling precision can not be discussed.

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 deformed by bending and bending, which causes displacement of the working positions of the first and second rolls, which seriously affects the rolling precision.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a smart rolling mill which is constructed by assembling separate components and which is rigid in rigidity, facilitates roll pitch, and axial adjustment of the rolls.

In order to achieve the above object, the present invention adopts the following technical solution: an intelligent The rolling mill comprises first and second rolls arranged on the first and second bearing block assemblies, one end of the column is connected with the rolling stand and the other end is connected with the upper beam, wherein the rolling mill further comprises adjusting the first and second bearing blocks. a roll spacing adjustment mechanism for component spacing and an adjustment mechanism for axial adjustment of the roll, the roll distance adjustment mechanism comprising a hydraulic cylinder for pressing the second bearing block assembly disposed on the upper beam and supporting the first and second bearing block assemblies The spring between the two; the power source of the roll axial adjustment mechanism uses a hydraulic motor or a servo motor; the controller outputs a control signal to drive the hydraulic motor or the servo motor to rotate, and controls the control circuit of the hydraulic cylinder.

According to the above technical solution, the power source of the roll axial adjustment mechanism is a hydraulic motor or a servo motor, and The upper and lower end faces of the second bearing block assembly are respectively limited and supported by hydraulic cylinders and springs. It can be seen that when the hydraulic cylinder is pressed down, the distance between the second bearing block assembly and the first bearing block assembly will be closer, and vice versa. The distance between the second bearing block assembly and the first bearing block assembly will increase, and the action of the hydraulic motor or the servo motor and the hydraulic cylinder is driven by the controller output control signal, thereby realizing automatic and intelligent adjustment and overcoming the present In the prior art, it is necessary to wait for the equipment to be stopped before the adjustment can be implemented.

附图说明 DRAWINGS

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

Figure 2 is a left side view of Figure 1;

Figure 3 is a cross-sectional view taken along line A-A of Figure 1;

Figure 4 is a partial enlarged view of Figure 1;

Figure 5 is a schematic structural view of a column;

Figure 6 is a left side view of Figure 5;

Figure 7 is a schematic view showing the structure of the second bearing housing.

具体实施方式 detailed description

In the processing of wire rods, depending on the cooperating notches provided on the rolling mill rolls, if the notches are misaligned with each other or the notch positions are not completely opposite each other, the rolled product will have cross-sectional shape and dimensional deviation. And other quality issues; in addition. Since the rolls will inevitably be subject to wear during the rolling process, the deformation of the notches will occur, and the above problems will be severely rolled out. In view of this, it is necessary to axially adjust a pair of rolls that are fitted to each other to ensure that the cooperating notches provided on the rolls face each other or adjust the distance between the rolls of the rolls. The axial adjustment of the rolls usually requires one roll to be axially fixed and the other roll to be axially adjusted. This is a relatively simple and easy to implement axial adjustment scheme; the adjustment of the roll pitch is similar, that is, fixing one roll to adjust The position of the other roll.

An intelligent rolling mill comprising first and

second rolls

31, 41 disposed on first and second

bearing block assemblies

30, 40, and a column One end of 20 is connected to the rolling mill stand 10 and the other end is connected to the upper cross member 50. The rolling mill also includes adjusting the first and second bearing

block assemblies

30, 40. a pitch adjusting mechanism for the pitch and an adjusting mechanism for the axial adjustment of the roll, the roll adjusting mechanism comprising a hydraulic cylinder 80 disposed on the upper cross member 50 to press the second bearing block assembly 40 and supporting the first and second bearing housing assemblies Spring 70 between 30 and 40; the power source of the roller axial adjustment mechanism is hydraulic motor or servo motor; the controller output control signal drives the hydraulic motor or servo motor to rotate, and controls the hydraulic cylinder 80 Control loop.

Hydraulic motor or servo motor and hydraulic cylinder 80 The effect of the power or actuator is that the source of the drive signal can be provided by the controller as long as the controller outputs a drive adjustment signal, hydraulic motor or servo motor and hydraulic cylinder 80 It will respond promptly and accurately, especially the accuracy and reliability of its adjustment. As the steel is surrounded by a safe forbidden zone during the rolling process, the operator cannot realize online adjustment during the rolling process. The solution provided by the invention provides the possibility of realizing on-line adjustment, significantly improves the control and rolling precision of the rolling equipment, not only provides assembly guarantee for the reduction of the scrap rate, but also timely detects whether the product is out of tolerance and can quickly adjust the correction. Providing the possibility, saving a lot of time and reducing the labor intensity of workers.

The main content of the roll gap adjustment structure is to be the second bearing block assembly 40 Providing a reliable floating support, a spring structure is preferred in the present invention, and in particular, the spring 70 includes the first and second bearing

block assemblies

30, 40. The first and second disc springs 71, 72 between adjacent end faces and perpendicular to the adjacent end faces, the two

disc springs

71, 72 have different stiffnesses and are superposed, as shown in FIG.

The first and second disc springs 71 and 72 have different spring constants and a spring with a small spring constant 72 When subjected to the downforce, the first contraction is deformed. With the depression of the lower cylinder, both

springs

71, 72 are contracted and deformed into position, so that the second bearing block assembly 40 is pressed by the upper hydraulic cylinder 60. Positioned with a lower spring 70 that provides a substantially rigid fixation to securely position the second bearing block assembly 40, ensuring the first and

second housing assemblies

30, 40 The spacing is constant so that the rolling accuracy can be ensured.

In order to achieve the roll spacing and the axial adjustment of the rolls, a very important basic premise is to ensure accurate and reliable positioning of one roll. The present invention uses the following scheme for the first bearing block assembly 30. Positioning: The lower middle portion of the column 20 is provided with a step surface 21 facing downward, and the step surface 21 and the upward support surface of the rolling stand 10 form a pair of first bearing block assemblies 30. a limit mechanism for performing up-and-down displacement of the pressure pre-tensioning position, and the mill stand 10 or the column 20 and the first bearing block assembly 30 A limit mechanism is provided between the rollers in the axial direction or in the direction in which the rolled material travels.

As shown in Figures 5 and 6, a more specific solution is that the upper section of the column 20 is a cylindrical thread section 22a. The middle section is a square column section 22b having a square cross section and a lower section 22c below the square pillar section 22b, and a stepped surface 21 is formed at a boundary between the square pillar section 22b and the lower section 22c, and the stepped surface 21 The plate surface is horizontally or obliquely downward, and it is preferable that the plate surface of the step surface 21 is horizontally downward so that the maximum preload pressure can be obtained, and the lower portion 22c below the step surface 21 of the column 20 There are mutually parallel face faces 23 which are perpendicular to the axial direction of the rolls, and the lower section 22c is located in the grooved body 11 of the upward direction of the rolling stand 10, said mutually parallel two faces 23 The spacing between the grooves is matched with the groove width of the groove body 11, and the hinge shaft 60 is disposed between the lower end of the lower portion 22c and the groove body 11, and the hinge shaft 60 is parallel to the axis of the roll.

The cylindrical threaded section 22a is for connection with the upper cross member 50, i.e., the column 20 and the upper cross member are 50 by hydraulic nuts. The connection is integrated and the face 23 cooperates with the groove 11 on the mill stand 10 to define the position of the column 20 in the axial direction of the roll.

A spacer is disposed between the stepped surface 21 and the first bearing block assembly 30 and between the first bearing block assembly 30 and the rolling stand 10 80. That is, during assembly, it is convenient to first place the bearing block assembly 30 onto the rolling stand 10, and rotate the column 20 around the hinge shaft 60 so as to be located in the lower middle portion of the column, that is, the cylindrical lower portion 22c. Located in the groove 31, the step surface 21 is higher than the upper end surface of the bearing block assembly 30, so that the rotation of the column 20 is facilitated, and the stretching column 20 is properly deformed and then on the step surface 21 A spacer 80 of appropriate thickness is placed between the upper end surface of the housing assembly 30 to ensure the amount of tension that the column 20 should have, thereby ensuring the preload tension. The lower section 22c and the groove of the column 20 31 The fit defines the axial position of the first bearing block 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 portion constitutes a limiting mechanism for restricting the movement of the first bearing block assembly in the traveling direction of the rolled material, which is through the first bearing block assembly 30 and the rolling stand 10 The cooperation achieves positional positioning along the direction of travel of the rolled material.

The column legs 22b of the middle section of the column 20 are provided with rail grooves arranged along the longitudinal direction of the column 20 on the cylinder faces opposite to each other. The second bearing block assembly 40 is located in the groove of the rail groove 24.

The groove bottoms of the two rail slots 24 at the same end of the second bearing block assembly 40 form a pair of second housing assemblies 40 Along the limit in the direction of travel of the rolled material, the wall of the groove constitutes a limit on the axial direction of the second chock assembly 40, thus realizing the second chock assembly 40 along the rail groove 24 The defined direction is the displacement in the longitudinal direction of the column.

The above structure ensures the reliability and rigidity of the cooperation of the column 20 with the roll stand 10, that is, the column 20 is opposed to the roll stand 10 Only the axis of the hinge shaft 60 can be rotated, which is the fitting relationship when the roller is disassembled, and the degrees of freedom in other directions are limited, which is also due to the column 20 The positioning of the roll chocks can be reliably positioned after being effectively positioned.

A section of the column below the stepped surface 21 of the column 20 is located in a groove formed in the bearing block assembly 30. The two cooperate to form a stop mechanism that limits the movement of the first bearing block assembly 30 in the axial direction of the roll. As shown in Figs. 5 and 6, the step faces 21 are symmetrically arranged on the face of the face symmetry plane of the face faces 23 which are parallel to each other. 23 On both sides, the central symmetry plane of the face 23 is perpendicular to the axial direction of the roll. This ensures that the pressure acting at the port 31 is uniform and symmetrical, avoiding the column 20 Bending occurs due to bending moments.

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 limiting mechanism that limits the movement of the first bearing block assembly 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 roll axial adjustment mechanism includes a sub-bearing 42 disposed on the second journal 41 at the outer journal of the outer end of the main journal, and a sub-bearing 42 The outer ring is located in the sleeve of the axial adjustment sleeve 43, and the outer sleeve 43 is provided with a tooth 431 and a worm 44 to form a worm gear mechanism, and the axial adjustment sleeve 43 has a tooth 431 of the outer ring. The external thread is arranged on the side and the adjusting positioning ring 45. The internal thread provided on the inner ring constitutes a screw nut. The adjusting positioning ring 45 is fixedly connected to the main bearing housing 40, and the outer end of the worm 44 extends to the adjusting positioning ring. The outside is connected to the output shaft of the hydraulic motor or servo motor 46.

Thus, when the output shaft of the hydraulic motor or servo motor 46 transmits torque to the worm 44, the adjustment positioning ring 45 is fixedly coupled to the main bearing housing 40, so that the axial adjustment sleeve 43 also moves axially when rotated, and the auxiliary bearing 42 is externally When the ring is subjected to the axial thrust of the axial adjustment sleeve 43, and since the auxiliary bearing 42 is selected as the thrust bearing, the axial thrust is transmitted to the second roller 41 via the auxiliary bearing 42 and the bearing gland, due to the inside of the bearing gland The flared taper of the segment cooperates with the tapered transition surface between the main journal and the journal of the second roller 41 to provide a reliable and uniform axial adjustment thrust for axial adjustment of the second roller 41.

Claims

A smart rolling mill comprising first and second rolls (31), (41) disposed on first and second bearing block assemblies (30), (40), one end of the column (20) and a rolling stand (10) Connected to the other end and connected to the upper beam (50), characterized in that the rolling mill further comprises a roller distance adjusting mechanism for adjusting the spacing of the first and second bearing block assemblies (30) and (40), and an adjusting mechanism for axial adjustment of the roller. The roll gap adjusting mechanism includes a hydraulic cylinder (80) disposed on the upper beam (50) and pressing the second bearing block assembly (40) and supported by the first and second bearing housing assemblies (30), (40) The spring (70); the power source of the roll axial adjustment mechanism is a hydraulic motor or a servo motor; the controller output control signal drives the hydraulic motor or the servo motor to rotate, and controls the control circuit of the hydraulic cylinder (80).
The intelligent rolling mill according to claim 1, wherein said spring (70) comprises a first portion between the adjacent end faces of the first and second bearing block assemblies (30), (40) and perpendicular to the adjacent end face. The first and second disc springs (71) and (72), the two disc springs (71) and (72) have different stiffness and are superposed.
The intelligent rolling mill according to claim 1, characterized in that the lower middle portion of the column (20) is provided with a step surface (21) with a plate facing downward, the step surface (21) and the rolling stand (10) Between the upper support faces, a limit mechanism for vertically displacing the first bearing block assembly (30), and a rolling stand (10) or a column (20) and a first bearing block assembly (30) There is a limit mechanism that is arranged to restrict movement in the axial direction of the roll or in the traveling direction of the rolled material.
The intelligent rolling mill according to claim 1 or 2 or 3, 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 a square column In the lower section (22c) below the section (22b), the square column section (22b) and the lower section (22c) form a stepped surface (21), and the plate surface of the stepped surface (21) is horizontally or obliquely downward, and the column (20) The lower section (22c) below the stepped surface (21) has mutually parallel face faces (23) which are perpendicular to the axial direction of the roll, and the lower section (22c) is located at the notch of the roll stand (10) In the upward groove body (11), the spacing between the mutually parallel two faces (23) coincides with the groove width of the groove body (11), and the lower end of the lower section (22c) is hinged between the groove body (11) The shaft (60), the hinge shaft (60) is parallel to the axis of the roll.
The intelligent rolling mill according to claim 1, wherein said adjusting mechanism of said roll comprises a sub-bearing (42) and a sub-bearing (42) at a counter journal located at an outer end of the main journal of the second roll (41). The outer ring is located in the sleeve of the axial adjustment sleeve (43), and the outer adjustment sleeve (43) is provided with a tooth (431) and a worm (44) on the outer ring to form a worm gear mechanism, and the axial adjustment sleeve (43) The external thread of the ring tooth (431) is provided with the internal thread provided on the inner ring of the adjusting positioning ring (45) to form a screw nut, and the adjusting positioning ring (45) is fixedly connected with the main bearing seat (40), and the worm ( The outer end of 44) extends to the outside of the adjustment positioning ring (45) and is connected to the output shaft of the hydraulic motor or servo motor.
Rolling mill according to claim 4, characterized in that the stepped surface (21) and the first bearing block assembly (30) and or the first bearing block assembly (30) and the rolling stand (10) A spacer (90) is provided between them.
The rolling mill according to claim 4, wherein said first bearing block assembly (30) has an end face shape that is inverted and formed with a concave portion formed in said rolling stand (10). a limiting mechanism for restricting movement of the first bearing block assembly along a traveling direction of the rolling material, wherein the square column segments (22b) of the middle portion of the vertical column (20) are disposed along a length of the column (20) opposite to each other A rail slot (24) is disposed in the direction, and the second bearing block assembly (40) is located in the slot of the rail slot (24).