Guide device of large rolling mill and large rolling mill
By setting up guide wheels on the guide mechanism of a large steel rolling mill, rolling friction is achieved, and the problems of rolling parts scratches and guide losses caused by sliding friction between the guide and the rolling parts are solved, improving the quality of the rolling parts and reducing production costs.
Patent Information
- Application Number
- CN202422660793.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-01
AI Technical Summary
There is sliding friction between the guide and the rolled piece of the existing large steel rolling mill, resulting in scratches on the surface of the rolled piece and large loss of the guide, increasing operating costs.
The guide wheel set is used instead of the guide plate of the guide mechanism and the rolling member contacts, achieving rolling friction rather than sliding friction. The guide wheel set consists of two rollers, which are rotatably connected to the guide plate, and the rollers and the side walls of the rolling member produce rolling friction.
The sliding friction between the guide plate and the rolled piece is avoided, the rolling quality of the rolled piece is improved, the guide loss is reduced, and the production cost is reduced.
Smart Images
Figure CN223250231U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of steel rolling equipment, and in particular to a guide device of a large steel rolling mill and the large steel rolling mill. Background Art
[0002] During the rolling process of large-section steel, guides are installed at the mill entrance, exit, and upper and lower sections to ensure alignment between the workpiece and the roll pass, reduce damage to the roll pass caused by the impact of the workpiece on the mill rolls, and maintain the workpiece's dimensions. The entrance guides are used to correctly guide the workpiece into the roll pass, ensuring straight and stable steel in and out. The exit guides control torsion and bending of the steel at the exit. Existing guides are designed as an integral unit based on the rail cross-section.
[0003] In steel section production, the mill roll gap is typically adjusted horizontally, vertically, axially, or tilted to adjust dimensions such as finished rail height, bottom width, symmetry, leg thickness, and belly cavity. This can cause the steel to warp, tilt, or twist. This is typically controlled by using a step on the upper side of the guide. This method of controlling steel straightness creates sliding friction between the guide and the workpiece, placing significant stress on the guide step, which easily adheres to iron oxide scale. This adhered scale then falls off onto the rail waist and presses into the workpiece surface during the next rolling pass, forming a rolling scar defect. In existing guides used in large-scale rolling mills, the relative motion between the guide and the workpiece is sliding friction, resulting in surface scratches on the workpiece, as well as high guide wear and high operating costs.
[0004] Based on this, the existing technology needs to be further improved. Utility Model Content
[0005] In order to solve the above technical problems, the embodiment of the present disclosure provides a guiding device for a large steel rolling mill, including: a guide mechanism, the guide mechanism for guiding the rolled piece into or out of the hole type of the large steel rolling mill includes two guide plates, and the two guide plates are arranged in parallel to form a guide space for the rolled piece; and a guide wheel group, the guide wheel group includes two rollers, and the two rollers are rotatably connected to the two guide plates respectively, and the connecting line of the two rollers is perpendicular to the length direction of the guide plate, and the two rollers respectively generate rolling friction with the two side walls of the rolled piece passing through the guide space to avoid friction between the guide plates and the rolled piece.
[0006] In some embodiments, the guide wheel group includes multiple guide wheel groups, and the multiple guide wheel groups are distributed along the length direction of the guide plate.
[0007] In some embodiments, a groove is provided on the guide plate, and vertical plates are respectively provided on the two opposite edges of the top opening of the groove, and a top plate is provided on the vertical plates. The two ends of the top plate are respectively connected to the top ends of the two vertical plates. The groove, the two vertical plates and the top plate are enclosed to form an installation space for installing the roller, and the two ends of the roller are respectively rotatably connected to the top plate and the bottom wall of the groove.
[0008] In some embodiments, the guide device further includes a connecting shaft, both ends of which are respectively connected to the top plate and the bottom wall of the groove, and the roller is rotatably connected to the connecting shaft.
[0009] In some embodiments, the roller is rotatably connected to the connecting shaft via a bearing.
[0010] In some embodiments, the top panel is removably connected to the risers.
[0011] In some embodiments, the top plate is connected to the vertical plates by bolts.
[0012] In some embodiments, the bolt is included in plurality.
[0013] On the other hand, an embodiment of the present disclosure further provides a large-scale rolling mill, including the above-mentioned guide device of the large-scale rolling mill.
[0014] In some embodiments, the guide devices include two, which are respectively arranged at the rolling mill entrance and the rolling mill exit of the large steel rolling mill.
[0015] According to the above technical solution, the present disclosure provides a guide device for a large steel rolling mill and a large steel rolling mill. The guide device uses a guide wheel group arranged on a guide mechanism to make the rolled piece passing through the guide space contact with the roller to generate rolling friction, thereby guiding the rolled piece and avoiding the problem of sliding friction between the guide plate of the guide mechanism and the rolled piece. While ensuring the rolling quality of the rolled piece, it also avoids the problem of wear of the guide plate and increased production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0017] Figure 1 is a cross-sectional view of a guide device according to an embodiment of the present disclosure;
[0018] Figure 2 yes Figure 1 BB cross-sectional view;
[0019] Figure 3 yes Figure 1 AA section view;
[0020] Figure 4 yes Figure 3 side view.
[0021] Description of reference numerals:
[0022] 1. Guide plate; 2. Guide space; 3. Rolled product; 4. Roller; 5. Groove; 6. Vertical plate; 7. Top plate; 9. Connecting shaft; 10. Bolt; 11. Hole shape. DETAILED DESCRIPTION
[0023] The following embodiments of the present disclosure are further described in detail with reference to the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present disclosure, but are not intended to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.
[0024] The present disclosure provides these embodiments in order to make this disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.
[0025] It should be noted that, in the description of this disclosure, unless otherwise specified, "plurality" means greater than or equal to two; terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are intended solely to facilitate and simplify the description of this disclosure, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0026] In addition, the terms "first," "second," and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements.
[0027] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this disclosure depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.
[0028] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.
[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0030] As mentioned in the background art above, there is sliding friction between the guides and the rolled pieces of a large steel rolling mill, which affects the quality of the rolled pieces and causes high operating costs due to large guide wear. To this end, the inventors of this application provide a guide device for a large steel rolling mill and a large steel rolling mill in one or more embodiments. The guide device uses a guide wheel set provided on the guide mechanism to cause rolling friction between the rolled pieces passing through the guide space and the rollers, thereby guiding the rolled pieces and avoiding the problem of sliding friction between the guide plates of the guide mechanism and the rolled pieces. This ensures the quality of the rolled pieces while avoiding the problem of wear on the guide plates and increased production costs. One or more problems in the prior art are solved.
[0031] In response to the above-mentioned technical problems, the present invention provides a guide device for a large steel rolling mill, such as Figure 1 and Figure 2 As shown, it includes: a guide mechanism, which is used to guide the rolled piece 3 into or out of the pass 11 of the large steel rolling mill. The guide mechanism includes two guide plates 1, and the two guide plates 1 are arranged in parallel to form a guide space 2 for the rolled piece 3; a guide wheel group, which includes two rollers 4, and the two rollers 4 are rotatably connected to the two guide plates 1 respectively. The line connecting the two rollers 4 is perpendicular to the length direction of the guide plates 1, and the two rollers 4 respectively generate rolling friction with the two side walls of the rolled piece 3 passing through the guide space 2 to avoid friction between the guide plates 1 and the rolled piece 3.
[0032] Specifically, the two guide plates 1 are arranged in parallel to form a guide space 2, and the two rollers 4 are rotatably provided on the two guide plates 1. The two rollers 4 form a contact space with the workpiece 3 in the guide space 2, that is, the cross-sectional size of the contact space is smaller than the cross-sectional size of the guide space 2. The two rollers 4 both rotate axially in a direction perpendicular to the moving direction of the workpiece 3 (the length direction of the guide plate 1). Before the workpiece 3 enters the die 11 or after completing rolling and coming out of the die 11, it moves in the contact space along the length direction of the guide plate 1. During the movement process, the two side walls of the workpiece 3 respectively make rolling contact with the two rollers 4, thereby guiding the workpiece 3. At the same time, the workpiece 3 does not contact the guide plate 1, thereby avoiding the problems caused by sliding friction between the workpiece 3 and the guide plate 1.
[0033] Compared with the prior art, the guide device of a large steel rolling mill in the present application, through a guide wheel group arranged on the guide mechanism, makes the rolled piece 3 passing through the guide space 2 contact with the roller 4 to generate rolling friction, thereby guiding the rolled piece 3, and at the same time avoiding the problem of sliding friction between the guide plate 1 of the guide mechanism and the rolled piece 3, ensuring the rolling quality of the rolled piece 3 while avoiding the problem of wear of the guide plate 1 and increased production costs.
[0034] In some embodiments, the guide wheel groups include multiple guide wheel groups, which are distributed along the length of the guide plate 1. By arranging multiple guide wheel groups along the length of the guide plate 1, the contact space can have a sufficient effective length, ensuring that the guide wheel groups can fully guide the rolled product 3, thereby further ensuring normal production.
[0035] In some embodiments, as Figure 3 and Figure 4 As shown, the guide plate 1 is provided with a groove 5. Vertical plates 6 are provided on two opposing edges of the top opening of the groove 5. A top plate 7 is provided on the vertical plates 6. The ends of the top plate 7 are connected to the top ends of the two vertical plates 6. The groove 5, the two vertical plates 6, and the top plate 7 together form a mounting space for the roller 4. The ends of the roller 4 are rotatably connected to the top plate 7 and the bottom wall of the groove 5. The mounting space formed by the groove 5, the vertical plates 6, and the top plate 7 enables the roller 4 to be embedded in the guide plate 1.
[0036] In some embodiments, as Figure 3 and Figure 4 As shown, the guide device further includes a connecting shaft 9, the two ends of which are respectively connected to the top plate 7 and the bottom wall of the groove 5, and the roller 4 is rotatably connected to the connecting shaft 9. The connecting shaft 9 enables the roller 4 to rotate in the installation space.
[0037] In some embodiments, the roller 4 is rotatably connected to the connecting shaft 9 via a bearing (not shown in the figure). The rotatable connection between the connecting shaft 9 and the roller 4 is achieved via the bearing.
[0038] In some embodiments, the top plate 7 is detachably connected to the vertical plate 6. The detachable connection facilitates the disassembly and assembly of the connecting shaft 9 and the roller 4 in the installation space, thereby facilitating the maintenance and replacement of the roller 4.
[0039] In some embodiments, as Figure 3 As shown, the top plate 7 is connected to the vertical plate 6 by bolts 10. The bolts 10 enable the top plate 7 to be detachably mounted on the vertical plate 6.
[0040] In some embodiments, as Figure 1 As shown, there are a plurality of bolts 10. The connection strength between the top plate 7 and the vertical plate 6 is ensured by the plurality of bolts 10.
[0041] The utility model also provides a large steel rolling mill, comprising the guide device of the large steel rolling mill.
[0042] In some embodiments, as Figure 1 As shown, there are two guide devices, which are respectively arranged at the rolling mill entrance and the rolling mill exit of the large steel rolling mill.
[0043] In summary, the present disclosure provides a guide device for a large steel rolling mill and a large steel rolling mill. The guide device uses a guide wheel group arranged on a guide mechanism to make the rolled piece 3 passing through the guide space 2 contact with the roller 4 to generate rolling friction, thereby guiding the rolled piece 3 and avoiding the problem of sliding friction between the guide plate 1 of the guide mechanism and the rolled piece 3. While ensuring the rolling quality of the rolled piece 3, it also avoids the problem of wear of the guide plate 1 and increased production costs.
[0044] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.
[0045] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.
Claims
1. A guide device for a large steel rolling mill, characterized in that: include: A guide mechanism for guiding a rolled piece (3) into or out of a pass (11) of the large-scale rolling mill, the guide mechanism comprising two guide plates (1), the two guide plates (1) being arranged in parallel to form a guide space (2) for the rolled piece (3); and The guide wheel group includes two rollers (4), the two rollers (4) are rotatably connected to the two guide plates (1), the connecting line of the two rollers (4) is perpendicular to the length direction of the guide plates (1), and the two rollers (4) respectively generate rolling friction with the two side walls of the rolled piece (3) passing through the guide space (2) to avoid friction between the guide plates (1) and the rolled piece (3).
2. The guide device for a large-scale rolling mill according to claim 1, characterized in that: The guide wheel group comprises a plurality of guide wheel groups, and the plurality of guide wheel groups are distributed along the length direction of the guide plate (1).
3. The guide device for a large-scale rolling mill according to claim 1, characterized in that: The guide plate (1) is provided with a groove (5), and vertical plates (6) are respectively provided on two opposite edges of the top opening of the groove (5), and a top plate (7) is provided on the vertical plate (6). The two ends of the top plate (7) are respectively connected to the top ends of the two vertical plates (6). The groove (5), the two vertical plates (6) and the top plate (7) are enclosed to form an installation space for installing the roller (4), and the two ends of the roller (4) are respectively rotatably connected to the top plate (7) and the bottom wall of the groove (5).
4. The guide device for a large-scale rolling mill according to claim 3, characterized in that: The guide device further comprises a connecting shaft (9), the two ends of which are respectively connected to the top plate (7) and the bottom wall of the groove (5), and the roller (4) is rotatably connected to the connecting shaft (9).
5. The guide device for a large-scale rolling mill according to claim 4, characterized in that: The roller (4) is rotatably connected to the connecting shaft (9) via a bearing.
6. The guide device for a large-scale rolling mill according to claim 3, characterized in that: The top plate (7) is detachably connected to the vertical plate (6).
7. The guide device for a large-scale rolling mill according to claim 6, characterized in that: The top plate (7) is connected to the vertical plate (6) via bolts (10).
8. The guide device for a large-scale rolling mill according to claim 7, characterized in that: The bolts (10) include a plurality of bolts.
9. A large steel rolling mill, characterized in that: A guide device for a large steel rolling mill comprising the guide device according to any one of claims 1 to 8.
10. The large-scale rolling mill according to claim 9, characterized in that: The guide devices include two, and the two guide devices are respectively arranged at the rolling mill entrance and the rolling mill exit of the large-scale rolling mill.