Novel device with hot delivery roller structure
By improving the end plate design and through-hole setting of the hot conveying roller structure, the problem of roller shaft deformation and fracture caused by stress concentration and internal pressure was solved, thus achieving stable operation and extended service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGCHUN NEW STEEL CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-01
AI Technical Summary
Existing hot conveying rollers suffer from stress concentration during prolonged use, leading to roller shaft deformation or breakage, which affects production efficiency and equipment stability.
A novel hot conveying roller structure is designed, which uses an arc-shaped outer surface of the end plate and through holes in the end plate to disperse stress and expel internal gas, thereby reducing the internal pressure and temperature of the hot conveying roller.
It effectively avoids roller shaft deformation and breakage, improves equipment service life and production stability, reduces spare parts costs, and ensures production continuity.
Smart Images
Figure CN224181685U_ABST
Abstract
Description
A novel device with a hot-feeding roller structure Technical Field
[0001] This utility model relates to the field of steelmaking continuous casting technology, and in particular to a novel device for hot-feeding roller structure. Background Technology
[0002] Hot-feed rolls, as one of the main pieces of equipment for conveying continuously cast billets, play a crucial role in directly transferring high-temperature billets to the rolling mill process during production. Compared with traditional transportation methods (such as overhead crane transport and truck transport), they can fully utilize the billet temperature, thereby reducing heat loss, gas consumption, and billet heating time, thus improving the steel yield. They also significantly reduce the cost of transporting billets from the steel mill to the rolling mill, as well as the maintenance of cranes and the input of production personnel. However, during long-term production, existing hot-feed rolls are prone to bending deformation or even breakage due to the pressure generated by multiple billets being transmitted to the roll shaft. Replacement after breakage or damage can take up to 3 hours, severely impacting production efficiency.
[0003] Therefore, there is an urgent need to design a new type of hot conveying roller structure. Summary of the Invention
[0004] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a new type of hot conveying roller structure device, which aims to solve the problem of roller shaft deformation or even breakage caused by stress concentration in existing hot conveying rollers.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a novel hot conveying roller structure device, including a hot conveying roller body, end plates installed at both ends of the hot conveying roller body, a circular hole opened in the center of the end plate, a roller shaft connected to the circular hole, the inner side of the end plate being a plane, and the outer side of the end plate being an arc surface.
[0006] As a further improvement of this utility model: the thickness of the end plate near the hot conveying roller body is less than the thickness of the end plate near the roller shaft. Because the thickness of the end plate near the hot conveying roller body is less than the thickness of the end plate near the roller shaft, the end plate can disperse the stress generated by the casting billet on the hot conveying roller and roller shaft during use.
[0007] As a further improvement of this utility model: the outer arc surface of the end plate is a concave arc surface.
[0008] As a further improvement of this utility model, the radius of the arc surface is 82.5mm.
[0009] As a further improvement of this utility model, the end plate is provided with a through hole. The through hole in the end plate facilitates the discharge of gas that expands due to heat inside the hot conveying roller body, reducing the internal pressure of the hot conveying roller and lowering its temperature. This reduces the risk of heat-induced cracking of the roller surface, improves the service life of the hot conveying roller, ensures stable production, and avoids the problem of roller surface cracking caused by internal pressure in existing hot conveying rollers.
[0010] As a further improvement of this utility model: the through hole extends axially through the end plate. By extending axially through the end plate, the internal space of the hot conveying roller body can be connected with the external space, allowing the gas inside the hot conveying roller body that has expanded due to heat to be discharged.
[0011] As a further improvement of this utility model, the diameter of the through hole is 10mm.
[0012] As a further improvement of this utility model: the through holes are symmetrically distributed on the end plates on both sides of the hot conveying roller body.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. By changing the outer side of the end plate to a circular arc surface structure, this utility model can effectively disperse the stress on the surface of the hot conveying roller and the roller shaft, avoiding the problem of roller shaft deformation and breakage caused by stress concentration in existing hot conveying rollers, and improving the service life of the roller shaft and production stability.
[0015] 2. This utility model has through holes in the end plate, which facilitates the discharge of gas that expands due to heat inside the hot conveying roller body, reduces the internal pressure of the hot conveying roller and lowers the temperature of the hot conveying roller, reduces the risk of heat cracking of the roller surface, improves the service life of the hot conveying roller, ensures stable production, and avoids the problem of roller surface cracking caused by internal pressure in existing hot conveying rollers.
[0016] 3. This utility model effectively improves the service life of the hot conveying roller and roller shaft, greatly enhances the stability of the equipment during the production process, ensures stable production operation, reduces consumption, and saves spare parts costs. Attached Figure Description
[0017] Figure 1 is an assembly diagram of this utility model.
[0018] Figure 2 shows the stress diagram of an existing hot conveying roller.
[0019] Figure 3 is a stress diagram of the hot conveying roller of this utility model.
[0020] Reference numerals: 1. Hot conveying roller body; 2. End plate; 3. Through hole; 4. Roller shaft. Detailed Implementation
[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 limitations on this utility model.
[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise expressly specified. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0025] The present invention will now be further described in conjunction with the accompanying drawings and embodiments:
[0026] Implementation Case 1:
[0027] Please refer to Figure 1. A novel hot conveying roller structure device includes a hot conveying roller body 1. End plates 2 are installed at both ends of the hot conveying roller body 1. A circular hole is opened in the center of the end plate, and a roller shaft 4 is connected to the circular hole. The inner side of the end plate 2 is a plane, and the outer side of the end plate 2 is an arc surface.
[0028] By changing the outer side of the end plate to a rounded surface structure, the stress on the surface of the hot conveying roller and the roller shaft can be effectively dispersed, avoiding the problem of roller shaft deformation and breakage caused by stress concentration in existing hot conveying rollers, and improving the service life of the roller shaft and production stability.
[0029] As shown in Figures 2 and 3, when the surface of the hot conveying roll is subjected to a pressure of 10000N, the maximum stress experienced by the existing hot conveying roll is 7.42 × 10⁻⁶. 6 The maximum stress on the improved hot conveying roller is 7.11 × 10 N / m². 6 The stress on the improved hot conveying roller is significantly reduced compared to the existing hot conveying roller (N / ㎡).
[0030] Furthermore, the thickness of the end plate 2 near the hot conveying roller body 1 is less than the thickness of the end plate 2 near the roller shaft 4.
[0031] Since the thickness of the end plate 2 near the hot conveying roller body 1 is less than the thickness of the end plate 2 near the roller shaft 4, the end plate can disperse the stress generated by the cast billet on the hot conveying roller and roller shaft during use.
[0032] Furthermore, the outer arc surface of the end plate 2 is a concave arc surface.
[0033] Furthermore, the radius of the arc surface is 82.5 mm.
[0034] Implementation Case 2:
[0035] Please refer to Figure 1. A novel hot-feeding roller structure includes a hot-feeding roller body 1, with end plates 2 installed at both ends of the body 1. A circular hole is formed at the center of each end plate, connecting to a roller shaft 4. The inner side of the end plate 2 is flat, while the outer side is an arc surface. By changing the outer side of the end plate to an arc surface, the stress on the surface of the hot-feeding roller and the roller shaft can be effectively dispersed, avoiding the problem of roller shaft deformation and breakage caused by stress concentration in existing hot-feeding rollers, thus improving the service life and production stability of the roller shaft. The thickness of the end plate 2 near the hot-feeding roller body 1 is less than the thickness of the end plate 2 near the roller shaft 4. This less thickness allows the end plate to disperse the stress generated by the cast billet on the hot-feeding roller and roller shaft during use. The outer arc surface of the end plate 2 is a concave arc surface with a radius of 82.5 mm.
[0036] Because the hot conveying roll has a hollow internal structure, and the billet is at a high temperature after production, heat is transferred to the interior through the hot conveying roll, causing the internal temperature of the hot conveying roll to rise and the air pressure to increase, which can easily lead to cracking of the roll surface. To solve the problem of the risk of roll surface cracking caused by air expansion inside the hot conveying roll due to high temperature billet, please refer to Figure 1, and a through hole 3 is provided in the end plate 2.
[0037] The end plate has through holes to facilitate the discharge of gas that expands due to heat inside the hot conveying roll body, thereby reducing the internal pressure and temperature of the hot conveying roll. This reduces the risk of heat-induced cracking of the roll surface, improves the service life of the hot conveying roll, ensures stable production, and avoids the problem of roll surface cracking caused by internal pressure in existing hot conveying rolls.
[0038] Furthermore, the through hole extends axially through the end plate. By extending axially through the end plate, the internal space of the hot conveying roller body can be connected to the external space, allowing the gas inside the hot conveying roller body that expands due to heat to be discharged.
[0039] Furthermore, the diameter of the through hole 3 is 10 mm.
[0040] Furthermore, the through holes 3 are symmetrically distributed on the end plates 2 on both sides of the hot conveying roller body 1.
[0041] The end plates on both sides of the hot conveying roller body have symmetrically distributed through holes, which facilitates the rapid discharge of the gas that expands due to heat inside the hot conveying roller body.
[0042] By opening through holes in the end plate and changing the outer side of the end plate to a rounded surface structure, the service life of the hot conveying roller and roller shaft is effectively improved, the stability of the equipment during the production process is greatly improved, the stable operation of production is guaranteed, consumption is reduced, and spare parts costs are saved.
[0043] The working principle of this utility model:
[0044] Using the existing material and dimensions of the hot-feed roll, the welded end plates on both sides of the roll were improved. The original structure of the end plates, which were flat on both sides, was changed to a structure with a flat inner side and an arc-shaped outer side. This improvement in the shape and structure of the end plates effectively disperses the stress generated by the cast billet on the surface and shaft of the hot-feed roll during the production process. At the same time, holes were opened on both sides of the end plates of the hot-feed roll. When the internal temperature of the hot-feed roll rises and the air expands due to heat, it can help to expel the internal air, reduce the internal pressure and temperature of the hot-feed roll, and effectively improve the service life of the hot-feed roll.
[0045] The main functions of this utility model are:
[0046] This invention, by modifying the outer side of the end plate to a rounded surface, effectively disperses the stress on the surface of the hot conveying roller and the roller shaft, avoiding the problems of roller shaft deformation and breakage caused by stress concentration in existing hot conveying rollers, thus improving the service life of the roller shaft and production stability. Through holes in the end plate facilitate the discharge of gases that expand due to heat inside the hot conveying roller body, reducing the internal pressure and temperature of the hot conveying roller, minimizing the risk of heat-induced cracking of the roller surface, and further extending the service life of the hot conveying roller. This ensures stable production and avoids the problem of roller surface cracking caused by internal pressure in existing hot conveying rollers. This invention effectively improves the service life of the hot conveying roller and roller shaft, greatly enhances the stability of equipment during production, ensures stable operation, reduces consumption, and saves on spare parts costs.
[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A novel device with a heated conveying roller structure, characterized in that: It includes a hot conveying roller body (1), and end plates (2) are installed at both ends of the hot conveying roller body (1). A circular hole is opened in the center of the end plate, and a roller shaft (4) is connected to the circular hole. The inner side of the end plate (2) is a plane, and the outer side of the end plate (2) is an arc surface.
2. A novel hot roll arrangement as claimed in claim 1, wherein: The thickness of the end plate (2) near the hot conveying roller body (1) is less than the thickness of the end plate (2) near the roller shaft (4).
3. A novel hot roll arrangement as claimed in claim 1, wherein: The outer arc surface of the end plate (2) is a concave arc surface.
4. A novel hot roll arrangement as claimed in claim 1, wherein: The radius of the arc surface is 82.5 mm.
5. A novel hot roll arrangement as claimed in claim 1, wherein: The end plate (2) has a through hole (3).
6. A novel hot roll arrangement as claimed in claim 5, wherein: The through hole (3) penetrates the end plate (2) axially.
7. A novel hot roll arrangement as claimed in claim 5, wherein: The through holes (3) are symmetrically distributed on the end plates (2) on both sides of the hot conveying roller body (1).
8. A novel hot roll arrangement as claimed in claim 5, wherein: The diameter of the through hole (3) is 10 mm.