Flexible contact protection against scratching of steel coil surfaces
By combining a flexible contact protective structure with a threaded locking mechanism, quick installation and disassembly are achieved, solving the problem of surface scratches on steel coils in existing technologies and realizing surface protection of steel coils while improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MAANSHAN STEEL & SHENG METAL TECHNOLOGY CO LTD
- Filing Date
- 2025-09-17
- Publication Date
- 2026-07-14
AI Technical Summary
Steel coils are easily scratched or abraded during hoisting, transportation, and stacking, which affects the appearance and quality of the product.
The flexible contact protection structure, consisting of a flexible sleeve and arc-shaped strips on its inner and outer walls, combined with a threaded locking mechanism, enables quick installation and disassembly, preventing scratches and abrasions from contacting hard objects with the end face of the steel coil.
It effectively protects the integrity of the coating or plating on the surface of steel coils, improves work efficiency, is reusable, adaptable to steel coils of different specifications, and has strong versatility.
Smart Images

Figure CN224492134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metallurgical product transportation and protection technology, and more specifically, to a flexible contact-type protective device for preventing scratches on the surface of steel coils. Background Technology
[0002] In the production, processing, and distribution of steel, steel coils (such as hot-rolled coils, cold-rolled coils, galvanized coils, and color-coated coils) are common product forms. High-quality steel coils, especially those with a coating (such as zinc or aluminum-zinc) or a coating (such as color-coated coils), directly determine the product's value and subsequent processing performance through their surface smoothness and coating integrity.
[0003] Based on the above, the inventors have discovered that: currently, the metal parts or rough surfaces of traditional C-type lifting tools, slings, or electromagnetic lifting tools directly contact the inner diameter or end face of the steel coil. During lifting, moving, and placement, if sliding, collision, or compression occurs, scratches, indentations, or abrasions are easily left on the steel coil surface. When multiple layers of steel coils are stacked, the end faces of the upper and lower coils directly contact each other, or contact the rigid contact points of the support frame. Under the action of gravity, the hard contact points can press into or scratch the coating surface, seriously affecting the product's appearance and quality. Therefore, in view of this, the inventors have researched and improved the existing structure to provide a flexible contact-type protective device to prevent scratches on the steel coil surface, aiming to achieve a more practical purpose. Utility Model Content
[0004] 1. Technical problems to be solved
[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a flexible contact protective device for preventing the surface of steel coils from being scratched. It can solve the problem that the surface of steel coils is easily scratched and abraded during hoisting, transportation and stacking in the prior art.
[0006] 2. Technical Solution
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] A flexible contact protective device for preventing scratches on the surface of a steel coil includes a flexible sleeve I, a steel coil body, and a flexible sleeve II. The flexible sleeve I and flexible sleeve II are installed on both sides of the steel coil body. A protective sleeve is fitted on the outer side of the steel coil body. A reinforcing strip is fixedly connected to one side of the protective sleeve. An annular protective ring is fixedly connected to one side of each of the flexible sleeve I and flexible sleeve II. An opening is fixedly provided on the inner side of each annular protective ring. An adapter head is fixedly provided on one side of the opening. An installation plate is installed on one side of the adapter head. An installation button is threadedly connected to one side of the installation plate. An arc-shaped strip I is fixedly provided on the outer wall of each of the flexible sleeve I and flexible sleeve II, and an arc-shaped strip II is fixedly provided on the inner wall of each of the flexible sleeve I and flexible sleeve II.
[0009] Furthermore, the dimensions of the first flexible sleeve and the second flexible sleeve are adapted to the dimensions of the main body of the steel coil, and the protective sleeve is located in the middle of the main body of the steel coil.
[0010] Furthermore, the annular protective ring is provided in two sets, and each set of annular protective rings is equipped with three adapter heads.
[0011] Furthermore, the reinforcing strip, arc strip one, and arc strip two are all made of rubber material.
[0012] Furthermore, the first arc-shaped strip is distributed in a circumferential manner on the outer wall of the first flexible sleeve and the second flexible sleeve, and the second arc-shaped strip is distributed in a circumferential manner on the inner wall of the first flexible sleeve and the second flexible sleeve.
[0013] Furthermore, the lengths of the first and second arc-shaped strips are consistent with the lengths of the first and second flexible sleeves.
[0014] Furthermore, the adapter head has a second threaded groove on its inner side, the mounting plate has a first threaded groove on its inner side, and the mounting button passes through the mounting plate and is threadedly connected to the adapter head.
[0015] 3. Beneficial effects
[0016] Compared with existing technologies, the advantages of this utility model are:
[0017] (1) This solution achieves comprehensive protection of the end face of the steel coil by setting up a flexible contact protection structure composed of a flexible sleeve and arc strips on its inner and outer walls. When the steel coil is hoisted, stacked or in contact with the support frame, the stress point of its end face is first applied to the arc strip on the outer side of the flexible sleeve. The arc strip made of flexible materials such as rubber has good elasticity and wear resistance, which can effectively absorb impact energy, disperse contact pressure, avoid stress concentration, and transform rigid scraping into elastic contact. This fundamentally prevents scratches, indentations and abrasions on the surface of the steel coil caused by hard contact with the hoisting device, support frame or adjacent steel coil, and effectively protects the integrity of the coating or plating of the steel coil.
[0018] (2) This solution achieves rapid and reliable installation and disassembly of the device by setting a threaded locking mechanism consisting of an adapter head, a mounting plate, and a mounting button on the flexible sleeve. During installation, the flexible sleeve is placed on the end of the steel coil, its position is adjusted, and then the mounting button is rotated. Through the threaded engagement, the adapter head is pulled to tighten the opening of the flexible sleeve, thus firmly clamping it to the end face of the steel coil. The inner arc-shaped strip increases friction and further prevents axial slippage. During disassembly, the mounting button is rotated in the opposite direction to loosen it. This design is simple to operate, requires no special tools, and can be completed by a single person, greatly improving work efficiency. At the same time, the device is reusable, economical and environmentally friendly, and can adapt to different specifications of steel coils within a certain range through threaded adjustment, making it highly versatile. Attached Figure Description
[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the planar aspect of this utility model;
[0021] Figure 3 This is a schematic diagram of the protective device of this utility model;
[0022] Figure 4 This is a schematic diagram showing the disassembled protective device of this utility model;
[0023] Explanation of the labels in the diagram:
[0024] 1. Flexible sleeve one; 2. Flexible sleeve two; 3. Steel coil body; 4. Protective sleeve; 5. Reinforcing strip; 6. Mounting plate; 61. Threaded groove two; 7. Annular protective ring; 8. Mounting button; 9. Arc strip one; 10. Arc strip two; 11. Opening; 12. Adapter head; 13. Threaded groove one. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] Example:
[0027] Please see Figure 1-4 A flexible contact protective device for preventing scratches on the surface of a steel coil includes a flexible sleeve 1, a steel coil body 3, and a flexible sleeve 2. The flexible sleeve 1 and flexible sleeve 2 are installed on both sides of the steel coil body 3. A protective sleeve 4 is fitted on the outer side of the steel coil body 3. A reinforcing strip 5 is fixedly connected to one side of the protective sleeve 4. An annular protective ring 7 is fixedly connected to one side of each of the flexible sleeve 1 and flexible sleeve 2. An opening 11 is fixedly provided on the inner side of the annular protective ring 7. An adapter head 12 is fixedly provided on one side of the opening 11. An installation plate 6 is installed on one side of the adapter head 12. An installation button 8 is threadedly connected to one side of the installation plate 6. An arc-shaped strip 9 is fixedly provided on the outer wall of each of the flexible sleeve 1 and flexible sleeve 2, and an arc-shaped strip 10 is fixedly provided on the inner wall of each of the flexible sleeve 1 and flexible sleeve 2.
[0028] See Figure 1 and Figure 2 The dimensions of flexible sleeve 1 and flexible sleeve 2 are adapted to the dimensions of the steel coil body 3. The protective sleeve 4 is located in the middle of the steel coil body 3. Flexible sleeve 1 and flexible sleeve 2 are used to protect the end face of the steel coil body 3.
[0029] See Figure 1 and Figure 3 The annular protective ring 7 is provided in two sets, and each set of annular protective ring 7 is equipped with three adapter heads 12. The annular protective ring 7 is used to lock the flexible sleeve 1 and flexible sleeve 2 of the mounting button 8 and mounting plate 6.
[0030] See Figure 1 and Figure 3 The reinforcing strip 5, arc strip 1 9 and arc strip 2 10 are all made of rubber material. The rubber material reinforcing strip 5, arc strip 1 9 and arc strip 2 10 are used to protect the steel coil body 3.
[0031] See Figure 3 and Figure 4 Arc-shaped strip 9 is distributed in a ring around the outer wall of flexible sleeve 1 and flexible sleeve 2, and arc-shaped strip 10 is distributed in a ring around the inner wall of flexible sleeve 1 and flexible sleeve 2. Arc-shaped strip 9 is used as a flexible contact point to distribute pressure and avoid scratches when stacked or in contact with the support frame.
[0032] See Figure 3 and Figure 4 The lengths of arc-shaped strip 19 and arc-shaped strip 20 are the same as the lengths of flexible sleeve 1 and flexible sleeve 2. Arc-shaped strip 20 is used to increase the friction with the end face of the steel coil body 3 and prevent the flexible sleeve 1 and flexible sleeve 2 from axially slipping during hoisting or rolling.
[0033] See Figure 1 and Figure 4 The inner side of the adapter head 12 is provided with a threaded groove 13, and the inner side of the mounting plate 6 is provided with a threaded groove 61. The mounting button 8 passes through the mounting plate 6 and is threadedly connected to the adapter head 12. The mounting button 8 and the adapter head 12 are used to lock the flexible sleeve 1 and the flexible sleeve 2.
[0034] In use: First, during installation, place the flexible sleeve 1 and flexible sleeve 2 onto the ends of the steel coil body 3 respectively, adjust their positions, and then rotate the mounting knob 8. This, through the threaded connection, pull the adapter head 12 to tighten the openings 11 on the flexible sleeves 1 and 2, thus firmly securing them to the end face of the steel coil body 3. The inner arc-shaped strip 10 increases friction, further preventing axial slippage. For disassembly, simply rotate the mounting knob 8 in the opposite direction to loosen it. This design is simple to operate, requires no special tools, and can be completed by a single person, greatly improving work efficiency. Furthermore, the device is reusable, economical, and environmentally friendly. Through threaded adjustment, it can adapt to different specifications of steel coils within a certain range, demonstrating strong versatility.
[0035] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., 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.
[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A flexible contact-type protective device for preventing scratching of steel coil surface, comprising a flexible sleeve one (1), a steel coil body (3), and a flexible sleeve two (2), wherein the flexible sleeve one (1) and the flexible sleeve two (2) are installed on both sides of the steel coil body (3), characterized in that: The outer side of the steel coil body (3) is fitted with a protective sleeve (4). A reinforcing strip (5) is fixedly connected to one side of the protective sleeve (4). A ring-shaped protective ring (7) is fixedly connected to one side of the flexible sleeve one (1) and the flexible sleeve two (2). An opening (11) is fixedly provided on the inner side of the ring-shaped protective ring (7). An adapter head (12) is fixedly provided on one side of the opening (11). An installation plate (6) is installed on one side of the adapter head (12). An installation button (8) is threadedly connected to one side of the installation plate (6). An arc-shaped strip one (9) is fixedly provided on the outer wall of the flexible sleeve one (1) and the flexible sleeve two (2). An arc-shaped strip two (10) is fixedly provided on the inner wall of the flexible sleeve one (1) and the flexible sleeve two (2).
2. The flexible contact-type protective device for preventing scratching of steel coil surface according to claim 1, characterized in that: The dimensions of the flexible sleeve one (1) and the flexible sleeve two (2) are adapted to the dimensions of the steel coil body (3), and the protective sleeve (4) is located in the middle of the steel coil body (3).
3. The flexible contact-type protective device for preventing scratching of steel coil surface according to claim 1, characterized in that: The annular protective ring (7) is provided in two sets, and each set of annular protective ring (7) is equipped with three adapter heads (12).
4. The flexible contact-type protective device for preventing scratching of steel coil surface according to claim 1, characterized in that: The reinforcing strip (5), arc strip one (9) and arc strip two (10) are all made of rubber material.
5. The flexible contact-type protective device for preventing scratching of steel coil surface according to claim 1, characterized in that: The arc-shaped strip one (9) is distributed in a ring around the outer wall of the flexible sleeve one (1) and the flexible sleeve two (2), and the arc-shaped strip two (10) is distributed in a ring around the inner wall of the flexible sleeve one (1) and the flexible sleeve two (2).
6. The flexible contact-type protective device for preventing scratching of steel coil surface according to claim 1, characterized in that: The lengths of the first arc-shaped strip (9) and the second arc-shaped strip (10) are the same as the lengths of the first flexible sleeve (1) and the second flexible sleeve (2).
7. The flexible contact-type protective device for preventing scratching of steel coil surface according to claim 1, characterized in that: The adapter (12) has a threaded groove 1 (13) on its inner side, and the mounting plate (6) has a threaded groove 2 (61) on its inner side. The mounting button (8) passes through the mounting plate (6) and is threadedly connected to the adapter (12).