Steel rolling guide transition structure and finishing mill group
By introducing a steel rolling guide transition structure into the hot-rolled strip production line, the protective parts are used to prevent the strip head from entering the gap between the transition plate and the sleeve device, the steel clamping problem is solved and the stability and efficiency of the production line are achieved. promote.
Patent Information
- Application Number
- CN202420665940.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-02
AI Technical Summary
In hot-rolled strip production lines, the steel trap caused by the gap between the transition plate and the sleeve device leads to production failures and economic losses, and the prior art is difficult to effectively solve.
A steel rolling guide transition structure is designed, including a protective member, which is located at the gap between the transition plate and the movable sleeve device. One end of the protective member is connected to the movable sleeve device and the other end extends below the transition plate to Prevent the strip head from entering the gap.
It effectively avoids the occurrence of steel stuck phenomenon, ensures the stable operation of the production line and improves production efficiency, and reduces maintenance costs.
Smart Images
Figure CN222306882U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of steel rolling equipment, and more specifically, relates to a steel rolling guide transition structure and a finishing mill unit. Background Art
[0002] In a hot strip production line, 7 finishing mills are usually used, arranged in sequence according to the direction of strip movement. To ensure that the strip is transferred sequentially between the finishing mills, the transition plate and the looper device configured between the frames of the finishing mills play a pivotal role. However, due to various factors in the design and installation process, there is always a certain gap between the transition plate and the looper device, which may cause major problems in actual production. Specifically, during the rolling process, if any of the finishing mills F1 to F6 has a buckling phenomenon, that is, the head of the strip first contacts the transition plate after passing through the finishing mill and continues to slide forward, it will cause serious production failures. Because of the gap between the transition plate and the looper device, the head of the strip is easily captured by this gap, which leads to the interruption of the steel rolling line and forms the so-called "steel jam" phenomenon.
[0003] In order to deal with this problem, the industry is currently mainly improving the rolling operation level, such as optimizing the rolling process, fine-tuning the rolling parameters, etc., in order to reduce the probability of buckling. Although these measures have achieved results to a certain extent, it is regrettable that there are still about 10 steel jamming incidents every year. These incidents not only seriously affect the stable operation and production efficiency of the production line, but also bring huge economic losses to the company. Therefore, how to fundamentally solve the steel jamming problem caused by the gap between the transition plate and the looper device is still a technical problem that needs to be overcome in the field of hot-rolled strip production. Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a steel rolling guide transition structure and a finishing mill group to solve the technical problem of steel jamming in the hot-rolled strip production line existing in the prior art.
[0005] To achieve the above purpose, the technical solution adopted in this application is:
[0006] A steel rolling guide transition structure is provided, comprising a protective member, wherein the protective member is located at a gap between a transition plate and a looping device, one end of the protective member is connected to the looping device, and the other end of the protective member extends below the transition plate.
[0007] As a further improvement of the above technical solution:
[0008] Optionally, the protective member is a protective plate, one end of which is connected to the looper device, and the other end of which extends below the transition plate.
[0009] Optionally, the looping device includes a looping liner located at the top, and the upper surface of the protective plate is flush with the upper surface of the looping liner.
[0010] Optionally, there are multiple protective plates, and the protective plates are arranged spaced apart from each other along the width direction of the looping device.
[0011] Optionally, there are multiple looper linings, and the looper linings are arranged at intervals from each other along the width direction of the looper device, and the protective plate is located at the intervals between the looper linings.
[0012] Optionally, it further comprises a bolt assembly, and one end of the protective plate is detachably connected to the looping device through the bolt assembly.
[0013] Optionally, the thickness of the protective plate ranges from 10 mm to 40 mm.
[0014] Optionally, one end of the transition plate is connected to an external supporting structure, and the other end of the transition plate is supported on the protective member, and the protective member is detachably connected to the transition plate.
[0015] The present application also provides a finishing mill group, including the above-mentioned rolling guide transition structure.
[0016] The beneficial effects of a steel rolling guide transition structure and a finishing mill group provided by the present application are:
[0017] The present application proposes a rolling steel guide transition structure including a protective member, which is located at the gap between the transition plate and the loop device. Specifically, the protective member is placed horizontally between the transition plate and the loop device, one end of the protective member is connected to the loop device, and the other end of the protective member extends to the bottom of the transition plate. This not only ensures the structural stability of the protective member, but also enables it to stop at the gap, forming a barrier to stop the head of the strip from entering the gap. When the head of the strip passes through the finishing mill, it will first contact the transition plate and continue to slide forward. However, due to the presence of the protective member, it successfully prevents the head of the strip from being captured by the gap between the transition plate and the loop device. In this way, the strip can move smoothly to the loop device under the guidance of the protective member, thereby avoiding the occurrence of the buckle phenomenon. The rolling steel guide transition structure of the present application can not only completely prevent the occurrence of steel jamming, ensure the stable operation of the production line, but also improve production efficiency and reduce maintenance costs.
[0018] The present application provides a finishing mill group, comprising the above-mentioned rolling guide transition structure. The rolling guide transition structure is arranged between the various finishing mills of the finishing mill group, which can not only ensure the smooth transition of the strip during the continuous rolling process, but also effectively avoid the risk of the strip head being caught by the gap, thereby ensuring the continuity and stability of the rolling process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0020] Figure 1 A schematic cross-sectional view of the steel rolling guide transition structure provided in this application;
[0021] Figure 2 It is a schematic cross-sectional view of a conventional transition plate and a looper device;
[0022] Figure 3 A schematic diagram of the three-dimensional structure of the protective member of the rolling steel guide transition structure provided in this application;
[0023] Among them, the reference numerals in the figure are:
[0024] 1. Protective parts; 2. Transition plate;
[0025] 3. Loose device. DETAILED DESCRIPTION
[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0030] During the strip rolling process, Figure 2 As shown, due to the gap between the transition plate and the looper device, the head of the strip may be caught in the gap during the forward movement, resulting in a buckle phenomenon, which in turn leads to a temporary interruption of the steel rolling production line, forming what the industry calls a "steel jam" phenomenon, which not only affects the production progress but may also cause damage to the equipment.
[0031] In order to solve this problem that has long plagued the steel rolling industry, this application proposes a steel rolling guide transition structure, which aims to completely solve the problem of steel jamming. Figure 1 and Figure 3 As shown, the rolling guide transition structure includes a protective member 1, which is located at the gap between the transition plate 2 and the looper device 3. Specifically, the protective member 1 is horizontally placed between the transition plate 2 and the looper device 3, one end of the protective member 1 is connected to the looper device 3, and the other end of the protective member 1 extends below the transition plate 2. This not only ensures the structural stability of the protective member 1, but also enables it to stop at the gap, forming a barrier to stop the head of the strip steel from entering the gap.
[0032] In actual application, after the head of the steel strip passes through the finishing mill, it will first come into contact with the transition plate and continue to slide forward. However, due to the presence of the protective member 1, it successfully prevents the head of the steel strip from being captured by the gap between the transition plate 2 and the loop device 3. In this way, under the guidance of the protective member 1, the steel strip can smoothly move toward the loop device 3, thereby avoiding the occurrence of the buckling phenomenon. The steel rolling guide transition structure of the present application can not only completely prevent the occurrence of steel jamming, ensuring the stable operation of the production line, but also improve production efficiency and reduce maintenance costs.
[0033] like Figure 1 and Figure 3As shown, in one embodiment of the present application, the protective member 1 is specifically a protective plate, one end of the protective plate serves as a connecting end, connected to the loop device 3; the other end of the protective plate extends to the bottom of the transition plate 2 to cover the gap between the transition plate 2 and the loop device 3.
[0034] The length direction X of the protective plate corresponds to the moving direction of the strip, that is, the direction from the transition plate 2 to the loop device 3, that is, the length direction of the loop device 3; the thickness direction h of the protective plate corresponds to the width direction of the loop device 3, and the width direction Y of the protective plate corresponds to the height direction of the loop device 3. In other embodiments, the protective element 1 can also be selected as a protective column, a protective tube or a protective block as needed.
[0035] After being rolled by the finishing mill, the strip passes through the transition plate 2 and the protective plate in sequence, and is finally guided to the loop device 3. The loop device 3 includes a loop liner located at the top of the device for direct contact with the strip. In one embodiment of the present application, the upper surface of the protective plate is flush with the upper surface of the loop liner. The upper surface of the protective plate is consistent with the upper surface of the loop liner, that is, the two are flush, thereby ensuring that the head of the strip can maintain a stable and smooth movement state when transitioning from the upper surface of the protective plate to the upper surface of the loop liner. This not only effectively avoids the possible jamming or shaking of the strip during movement, but also greatly improves the operating efficiency and stability of the steel rolling production line, bringing a smoother and more efficient experience to the entire steel rolling process.
[0036] In one embodiment of the present application, there are multiple protective plates, and the protective plates are arranged at intervals from each other along the width direction of the loop device 3. This arrangement not only ensures that the strip is stopped and supported at multiple positions, but also reduces the amount of protective plates used and reduces the overall weight of the rolling guide transition structure, thereby meeting the protection requirements while taking into account cost and efficiency.
[0037] In one embodiment of the present application, there are multiple looper linings, and each looper lining is arranged at intervals from each other along the width direction of the looper device 3, and the protective plate is located at the intervals between the looper linings. This arrangement makes the space between the looper linings more compact and reasonable.
[0038] In one embodiment of the present application, a bolt assembly is also included, and one end of the protective plate is detachably connected to the loop device 3 through the bolt assembly. The bolt assembly includes a nut and a bolt. Through holes are pre-opened at appropriate positions of the protective plate and the loop device 3 as mounting holes for bolt connection. After one end of the bolt passes through the through holes on the protective plate and the loop device 3, it is fastened to the nut, thereby firmly connecting the protective plate to the loop device 3. This bolt connection method not only has the advantages of simple structure and convenient operation, but also can ensure the firmness and stability of the connection. When the protective plate needs to be removed, it only needs to loosen the nut and bolt to easily remove the protective plate from the loop device 3, which is convenient and quick. This detachable design not only facilitates maintenance and replacement, but also improves production efficiency.
[0039] In another embodiment of the present application, one end of the protective plate may also be welded to the looper device 3 .
[0040] In one embodiment of the present application, in order to ensure that the protective plate has sufficient bearing capacity and impact resistance, the thickness h of the protective plate ranges from 10mm to 40mm. In practical applications, the thickness h of the protective plate can be adjusted according to specific needs. For example, in some scenarios where the bearing capacity requirements are not particularly high, we can choose a protective plate with a thickness of 10mm to reduce the weight of the overall structure and improve production efficiency. In some scenarios where the bearing capacity and stability requirements are extremely high, we can choose a protective plate with a thickness of 40mm to ensure that it can withstand greater pressure and impact.
[0041] After many experiments and comparative analysis, we found that when the thickness h of the protective plate is 20mm, its performance is particularly outstanding. The protective plate of this thickness not only has a strong bearing capacity and can stably support the movement of the strip, but also is not easy to deform, ensuring the stable operation of the steel rolling production line. Therefore, in practical applications, we prefer to set the thickness h of the protective plate to 20mm to give full play to its superior performance and stability.
[0042] In one embodiment of the present application, one end of the transition plate 2 is connected to an external support structure to ensure that it will not be displaced or shaken. The other end of the transition plate 2 is supported on the protective member 1, which not only has the function of shielding the gap between the transition plate 2 and the loop device 3, but also serves as an auxiliary support point for the transition plate 2, thereby enhancing the stability of the overall structure. It is worth noting that the connection between the protective member 1 and the transition plate 2 is detachable, which gives them greater flexibility and adaptability. When necessary, the protective member 1 can be easily separated from the transition plate 2, which is convenient for maintenance, replacement or adjustment. When they are connected together, the protective member 1 can effectively support the transition plate 2 and ensure its smooth operation. When the loop device is active, the design of the protective member 1 fully considers the interference problem with the transition plate 2, ensuring that the protective member 1 will not cause any interference with the transition plate 2 when the loop device is active, thereby ensuring the smooth operation of the entire steel rolling production line.
[0043] The present application also provides a finishing mill group, including the rolling steel guide transition structure in the above embodiment. The finishing mill group occupies a pivotal position in the hot rolling production line. It is usually arranged behind the intermediate roller table or hot coil box of the roughing mill group and is responsible for fine rolling processing of steel. The equipment of the unit includes the front roller table of the crop shear, the side guide plate of the crop shear, the speed measuring device of the crop shear, the edge heater, the crop shear and the crop collection device, the finishing descaling box, the front vertical roller mill of the finishing mill, the finishing mill, the looper device, the inlet and outlet guide plates of the finishing mill, the dust removal device of the finishing mill, the roller changing device of the finishing mill, etc.
[0044] As the core device in the finishing mill group, a finishing mill is usually provided with multiple finishing mills in a complete finishing mill group, and the steel strip needs to be rolled through these finishing mills in turn for multiple times to achieve the expected thickness and precision. The present application applies the rolling guide transition structure in the above embodiment to the finishing mill group. This rolling guide transition structure is arranged between each finishing mill, which can not only ensure the smooth transition of the steel strip during the continuous rolling process, but also effectively avoid the risk of the steel strip head being captured by the gap, thereby ensuring the continuity and stability of the rolling process.
[0045] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A steel rolling guide transition structure, characterized in that: The invention comprises a protective member (1), wherein the protective member (1) is located at the gap between a transition plate (2) and a looping device (3), one end of the protective member (1) is connected to the looping device (3), and the other end of the protective member (1) extends below the transition plate (2).
2. The rolling guide transition structure according to claim 1, characterized in that: The protective member (1) is a protective plate, one end of which is connected to the looper device (3), and the other end of which extends below the transition plate (2).
3. The rolling guide transition structure according to claim 2, characterized in that: The looping device (3) comprises a looping lining plate located at the top, and the upper surface of the protective plate is flush with the upper surface of the looping lining plate.
4. The rolling steel guide transition structure according to claim 3, characterized in that: There are a plurality of protective plates, and the protective plates are arranged spaced apart from each other along the width direction of the looping device (3).
5. The rolling steel guide transition structure according to claim 4, characterized in that: There are a plurality of looper linings, each of which is arranged at intervals from each other along the width direction of the looper device (3), and the protective plate is located at the intervals between each of the looper linings.
6. The rolling guide transition structure according to any one of claims 2 to 5, characterized in that: It also comprises a bolt assembly, through which one end of the protective plate is detachably connected to the looper device (3).
7. The rolling guide transition structure according to any one of claims 2 to 5, characterized in that: The thickness of the protective plate ranges from 10 mm to 40 mm.
8. The rolling guide transition structure according to any one of claims 1 to 5, characterized in that: One end of the transition plate (2) is connected to an external supporting structure, and the other end of the transition plate (2) is supported on the protective member (1); the protective member (1) and the transition plate (2) are detachably connected.
9. A finishing mill, characterized in that: It comprises a rolling guide transition structure as described in any one of claims 1 to 8.