Anti-biasing guiding device of large reduction straightening machine and large reduction straightening machine

Abstract

The application provides a large-rolling-reduction straightening machine anti-bias load guiding device and a large-rolling-reduction straightening machine, wherein the anti-bias load guiding device comprises a movable frame, an eccentric roller, an adjusting mounting seat and a guiding track; the guiding track is arranged on the frame of the large-rolling-reduction straightening machine, and the upper roller of the large-rolling-reduction straightening machine is arranged on the movable frame; the eccentric roller is arranged on the adjusting mounting seat, and the adjusting mounting seat is arranged on the movable frame; and the eccentric amount of the eccentric roller is adjusted to make the eccentric roller contact with the guiding track, so as to balance the bias load of the upper roller. The application realizes the problem of balancing the bias load of the transmission device by a group of rollers and sliding tracks arranged in a v-shaped mode with the axis of the upper roller, is simple and reliable, and has small maintenance amount. In addition, the eccentric roller, the sliding track and the movable frame fully utilize the space on the straightening machine, have compact structure, are convenient to install, can be conveniently realized on the straightening machine, and can also be used for technical upgrading and transformation of the existing straightening machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of continuous casting in the steel metallurgical industry, and more particularly to a large-press-down straightening machine anti-offset load guide device and a large-press-down straightening machine. BACKGROUND

[0002] At present, a part of special steel in China is produced by using large-billet, and the large-billet of the special steel has a large section size and is rich in various alloy elements, so the large-billet has a large tendency to produce center segregation, center porosity and shrinkage cavity defects, thereby affecting the product quality. In this case, it is often necessary to use a press-down technology at the solidification end to implement a certain amount of compression on the casting billet during the continuous casting process, so as to improve the internal quality of the casting billet. In actual operation, a large press-down amount needs to be implemented on the casting billet at the solidification end to achieve the required process effect.

[0003] The straightening machine is a device for implementing this process operation, and its basic structure type includes a machine frame, an upper and lower pair of parallel rollers, a transmission device directly sleeved on the upper roller, a press-down hydraulic cylinder and a guide device. When press-down, the straightening machine controls the up-down position of the upper roller in the upper and lower parallel rollers (the lower roller is fixed and does not move) to control the roll gap value of the pair of rollers, so that the outer shape size of the casting billet is limited by the roll gap of the pair of rollers when the casting billet passes through the pair of rollers, thereby realizing the compression of the casting billet.

[0004] With the development of continuous casting technology, the compression amount implemented on the casting billet by a single straightening machine reaches 10-25 mm, which requires that the transmission device of the upper roller has a large enough capacity to overcome the transmission resistance during the implementation of the press-down, thereby causing the transmission device to inevitably have a large size and a heavy weight (the weight can reach ~ 6 tons). The transmission device is arranged on one side of the upper roller, and the weight of the transmission device is a large offset load for the upper roller. If there is no reliable anti-offset load guide device, the parallelism of the upper roller and the lower roller cannot be guaranteed, thereby causing the outer shape size of the casting billet to be diamond-shaped deformed when the casting billet passes through the pair of rollers, and causing the casting billet quality accident.

[0005] Therefore, it is necessary to design an effective and reliable anti-offset load guide device which is easy to adjust, to ensure the parallelism of the upper and lower rollers of the large-press-down straightening machine and avoid the occurrence of quality accidents. SUMMARY

[0006] In view of the above problems, the purpose of the present application is to provide a large-press-down straightening machine anti-offset load guide device and a large-press-down straightening machine to solve the offset load problem of the upper roller mentioned in the background.

[0007] To achieve the above purpose, the large-press-down straightening machine anti-offset load guide device provided by the present application comprises a movable frame, an eccentric roller, an adjusting mounting seat and a guide rail, wherein,

[0008] The guide rail is arranged on the frame of the large reduction ratio straightening mill, and the upper roller of the large reduction ratio straightening mill is arranged on the movable frame.

[0009] The eccentric roller is arranged on the adjusting mounting seat, and the adjusting mounting seat is arranged on the movable frame.

[0010] And the eccentric amount of the eccentric roller is adjusted to make the eccentric roller contact with the guide rail.

[0011] In addition, the guide rail comprises two groups of parallel sliding rails arranged on the four supporting columns of the frame, and the two groups of parallel sliding rails are arranged in the up-down direction on the front and rear surfaces.

[0012] In addition, the parallel sliding rails are arranged on the four supporting columns of the frame of the straightening mill in the up-down direction, and the parallel sliding rails contact with the eccentric rollers.

[0013] In addition, the distance between the adjacent two parallel sliding rails is less than the distance between the centers of the corresponding two eccentric rollers.

[0014] In addition, the center part of the movable frame is connected with the reduction hydraulic cylinder of the large reduction ratio straightening mill through a hinged joint, so that the movable frame moves up and down under the drive of the reduction hydraulic cylinder.

[0015] In addition, two adjusting mounting seats are arranged on the front and rear surfaces of the movable frame respectively, and an eccentric roller is arranged on each adjusting mounting seat.

[0016] In addition, a transmission device is arranged on one side of the upper roller, the transmission device forms an eccentric load on the center of the upper roller, and the eccentric load is transmitted to the movable frame through a roller bearing seat.

[0017] In addition, each group of rollers on the front and rear surfaces contacts with the parallel sliding rails, and the center line of each group of two eccentric rollers and the shaft center line of the upper roller form a certain angle, so that the two center lines are arranged in a V shape.

[0018] In addition, the distance between the two parallel sliding rails on the front and rear surfaces is less than the distance between the centers of the corresponding two eccentric rollers.

[0019] The application also provides a large reduction ratio straightening mill, which comprises a transmission device, a frame, an upper roller, a lower roller, a reduction hydraulic cylinder and the anti-eccentric load guide device of the large reduction ratio straightening mill.

[0020] The above-mentioned anti-eccentric load guiding device and high-pressure pull-down straightening machine provided by this invention solve the problem of eccentric load in the balancing transmission device through a set of rollers arranged in a V-shape with the upper roller axis and their slide rails. It is simple, reliable, and requires little maintenance. Furthermore, the eccentric rollers, slide rails, and movable frame make full use of the space on the straightening machine, resulting in a compact structure and convenient installation. It can be easily implemented on the straightening machine and can also be used to upgrade and modify existing straightening machines.

[0021] Furthermore, the eccentric roller method in this invention is easy to adjust, enabling quick and reliable adjustment and ensuring the position and parallelism of the rollers on the straightening machine during operation. Simultaneously, the rollers utilize rolling friction, resulting in low resistance, minimal wear, long service life, and reliable operation. By balancing the eccentric torque of the transmission device, the quality of the produced billets can also be improved, reducing uneven wear on the straightening rollers and extending their service life.

[0022] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to encompass all such aspects and their equivalents. Attached Figure Description

[0023] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

[0024] Figure 1 This is a schematic diagram of the anti-eccentric load guiding device of the high-pressure pull-down straightening machine according to an embodiment of the present invention;

[0025] Figure 2 This is a top view of the anti-eccentric load guiding device of the high-pressure pull-down straightening machine according to an embodiment of the present invention.

[0026] The reference numerals in the figures include:

[0027] Transmission device 1, frame 2, upper roller 3, lower roller 4, pressing hydraulic cylinder 5, movable frame 6, eccentric roller 7, adjusting mounting base 8, slide rail 9.

[0028] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0029] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments. These embodiments are exemplary and intended to explain the invention, and should not be construed as limiting the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of the claims of the invention. Techniques not described in detail in this technical solution are all well-known technologies.

[0030] In the description of this invention, it should be understood that the following terms, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content or structure of this invention.

[0031] To describe in detail the structure of the anti-eccentric load guiding device for the high-pressure pull-down straightening machine of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Figure 1 and Figure 2 The front view and top view of the anti-eccentric load guiding device of the large-pressure pull-down straightening machine according to an embodiment of the present invention are shown respectively.

[0033] like Figure 1 and Figure 2 As shown in the figure, the anti-eccentric load guiding device of the large-pressure pull-down straightening machine in this embodiment of the invention mainly includes a movable frame 6, an eccentric roller 7, an adjusting mounting base 8, and a guide rail. The main components of the large-pressure pull-down straightening machine related to the anti-eccentric load guiding device of the large-pressure pull-down straightening machine in this embodiment of the invention include a transmission device 1, a frame 2, an upper roller 3, a lower roller 4, and a pressing hydraulic cylinder 5.

[0034] The guide rail is set on the frame 2 of the high-pressure pull-down straightening machine, and the upper roller 3 of the high-pressure pull-down straightening machine is mounted on the movable frame 6; the eccentric roller 7 is set on the adjusting mounting seat 8, and the adjusting mounting seat 8 is also set on the movable frame 6; and by adjusting the eccentricity of the eccentric roller 7 to make the eccentric roller 7 contact the guide rail, the eccentric load on the upper roller 3 is balanced.

[0035] Specifically, as an example, the upper roller 3 of the large-pressure pull-down straightening machine is mounted on the movable frame 6. The movable frame 6 moves up and down under the drive of the pressing hydraulic cylinder 5, thereby causing the upper roller to move up and down, creating a change in the pressing roller gap between it and the fixed lower roller. In order to balance the driving force on the movable frame 6, the central part of the movable frame 6 can be connected to the pressing hydraulic cylinder 5 of the large-pressure pull-down straightening machine through a hinge joint.

[0036] The guide rails include two sets of parallel slide rails 9 mounted on four support columns of the frame 2. The two sets of parallel slide rails 9 are arranged vertically on two separate front and rear surfaces, as shown below. Figure 2 The inner sides of the front and rear surfaces are shown. The parallel slide rail 9 is arranged vertically on the four support columns of the frame 2, and the parallel slide rail 9 is in contact with the eccentric roller 7.

[0037] Since a transmission device 1 is installed on one side of the upper roller 3, the transmission device 1 forms an off-center load on the center of the upper roller 3. This load is transmitted to the movable frame 6 through the roller bearing seat, forming a large deflection torque, which affects the parallelism of the upper and lower rollers. Therefore, in one specific embodiment of the present invention, two sets of adjustment mounting seats 8 are designed on the front and rear surfaces of the movable frame 6, and an eccentric roller 7 is provided on each adjustment mounting seat 8.

[0038] An eccentric roller 7 is installed on the mounting base 8. The eccentric roller 7 is set in an eccentric type. The eccentricity can be adjusted to ensure that the roller 7 is in stable contact with the parallel slide rail 9. At the same time, the center distance between the two rollers 7 in each group can be adjusted by adjusting the eccentricity, thereby achieving the purpose of adjusting the level of the upper 3 rollers.

[0039] Each set of rollers 7 on the front and rear surfaces contacts the slide rail 9. The center line connecting the two eccentric rollers 7 in each set forms a certain angle with the axis center line of the upper roller 3, so that the two center lines (the center line connecting the two rollers and the axis center line of the upper roller) are arranged in a V shape. The distance between the two parallel slide rails 9 on the front and rear surfaces is less than the distance between the centers of the corresponding two eccentric rollers 7.

[0040] Each roller 7 is subjected to the support reaction force transmitted from the parallel slide rail 9, forming a balancing torque that is opposite in direction and equal in magnitude to the deflection torque generated by the transmission device 1, thereby achieving the purpose of balancing the transmission device and ensuring the parallelism of the upper roller 3 and the lower roller 4 of the high-pressure pull-down straightening machine.

[0041] The above-mentioned anti-eccentric load guiding device for the high-pressure pull-down straightening machine of the present invention solves the problem of eccentric load in the balancing transmission device through a set of rollers and their slide rails arranged in a V-shape with the axis of the upper roller. It is simple, reliable, and requires little maintenance. Furthermore, the eccentric rollers, slide rails, and movable frame make full use of the space on the pull-down straightening machine, resulting in a compact structure and convenient installation. It can be easily implemented on the pull-down straightening machine and can also be used to upgrade and modify existing pull-down straightening machines.

[0042] Furthermore, the eccentric roller method in this invention is easy to adjust, enabling quick and reliable adjustment and ensuring the position and parallelism of the rollers on the straightening machine during operation. Simultaneously, the rollers utilize rolling friction, resulting in low resistance, minimal wear, long service life, and reliable operation. By balancing the eccentric torque of the transmission device, the quality of the produced billets can also be improved, reducing uneven wear on the straightening rollers and extending their service life.

[0043] The high-pressure pull-down straightening machine employing the aforementioned anti-eccentric load guiding device includes, correspondingly, a transmission device, a frame, an upper roller, a lower roller, and a pressing hydraulic cylinder, as well as the anti-eccentric load guiding device for the high-pressure pull-down straightening machine as described above. For examples of the anti-eccentric load guiding application of the high-pressure pull-down straightening machine, please refer to the foregoing description of the embodiments of the anti-eccentric load guiding device for the high-pressure pull-down straightening machine. Other structural features of the high-pressure pull-down straightening machine are similar to existing high-pressure pull-down straightening machines and will not be detailed here.

[0044] The anti-eccentric load guiding device and the large-pressure pull-down straightening machine according to the present invention have been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the anti-eccentric load guiding device and the large-pressure pull-down straightening machine proposed in the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A high-pressure pull-down straightening machine anti-eccentric load guiding device, characterized in that, Includes a movable frame, eccentric rollers, adjusting mounting base, and guide rails; among which, The guide rail is set on the frame of the high-pressure pull-down straightening machine, and the upper roller of the high-pressure pull-down straightening machine is installed on the movable frame; the guide rail includes two sets of parallel slide rails set on the four support columns of the frame, and the two sets of parallel slide rails are arranged in the up and down direction on the front and rear surfaces; The eccentric roller is mounted on the adjusting mounting base, and the adjusting mounting base is mounted on the movable frame; Furthermore, by adjusting the eccentricity of the eccentric roller to make it contact the parallel slide rail, and by adjusting the center distance between the two eccentric rollers in each group, the eccentric load on the upper roller is balanced; each group of rollers on the front and rear surfaces is in contact with the parallel slide rail, and the line connecting the centers of the two eccentric rollers in each group forms a certain angle with the axis center line of the upper roller, so that the two center lines are arranged in a V-shape.

2. The anti-eccentric load guiding device for a high-pressure pull-down straightening machine as described in claim 1, characterized in that, The parallel slide rails are arranged vertically on the four support columns of the frame.

3. The anti-eccentric load guiding device for a high-pressure pull-down straightening machine as described in claim 2, characterized in that, The distance between two adjacent parallel slide rails is less than the distance between the centers of two corresponding eccentric rollers.

4. The anti-eccentric load guiding device for a high-pressure pull-down straightening machine as described in claim 3, characterized in that, The central part of the movable frame is connected to the hydraulic cylinder of the large pressure-down straightening machine through a hinge joint, so that the movable frame can move up and down under the drive of the hydraulic cylinder.

5. The anti-eccentric load guiding device for a high-pressure pull-down straightening machine as described in claim 4, characterized in that, Two adjustment mounting seats are provided on each of the front and rear surfaces of the movable frame, and an eccentric roller is provided on each adjustment mounting seat.

6. The anti-eccentric load guiding device for a high-pressure pull-down straightening machine as described in claim 5, characterized in that, A transmission device is provided on one side of the upper roller. The transmission device forms an off-center load on the center of the upper roller. The off-center load is transmitted to the movable frame through the roller bearing seat.

7. The anti-eccentric load guiding device for a high-pressure pull-down straightening machine as described in claim 6, characterized in that, The distance between the two parallel slide rails on the front and rear surfaces is less than the distance between the centers of the two corresponding eccentric rollers.

8. A large-pressure straightening machine, comprising a transmission device, a frame, an upper roller, a lower roller, and a pressing hydraulic cylinder, characterized in that, It also includes the anti-eccentric load guide device for the large-pressure pull-down straightening machine as described in any one of claims 1 to 7.

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