Angle bead device for hoisting bare-clad steel coil
By designing a corner protection device for lifting bare steel coils, the problems of cutting the inner ring of the steel coil and roughening the sling during the lifting process were solved, thereby improving the safety and durability of the sling and reducing material consumption costs.
Patent Information
- Application Number
- CN202520666110.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-10
AI Technical Summary
During hoisting, the inner edge of the bare steel coil is easily cut by the lifting straps, posing a risk of falling. Furthermore, the sides of the lifting straps are easily clamped, resulting in severe scratches, reduced service life, and increased material consumption costs.
Design a corner protection device for lifting bare steel coils, including corner protection plates and locking plates, which are connected by tension plates to wrap around the inner and outer edges of the steel coil and are fixed with locking components. It can adapt to steel coils of different thicknesses and avoid cutting and scratching of the lifting straps.
It effectively prevents the inner edge of the steel coil from cutting the sling, reduces the risk of the sling falling, extends the service life of the sling, and reduces material consumption costs.
Smart Images
Figure CN223936069U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel coil hoisting technology, specifically to a corner protection device for hoisting bare steel coils. Background Technology
[0002] To reduce production costs, steel manufacturers often simply pack some steel coils with low packaging requirements and all remaining coils with steel straps, a practice commonly known as "naked packaging." For these coils, flat nylon slings are typically used for lifting. However, two problems arise during lifting: first, the inner edge of the steel coil is easily cut by the slings, posing a risk of injury from falling coils; second, the sides of the steel coil frequently get caught in the slings, causing severe wear and tear, significantly reducing the slings' lifespan and increasing material costs. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a corner protection device for lifting bare steel coils, which solves the problems of cutting the lifting straps at both ends of the bare steel coils and severe roughening during the lifting process.
[0004] To solve the above-mentioned technical problems, this utility model provides a corner protection device for lifting bare steel coils, including a corner protection plate and a locking plate. The corner protection plate is used to wrap the inner edge of the bare steel coil, and the locking plate is used to wrap the outer edge of the bare steel coil. The corner protection plate and the locking plate are connected by a tensioning plate, which is used to adjust the distance between the corner protection plate and the locking plate and to fix the distance between the corner protection plate and the locking plate.
[0005] In some embodiments, a sliding member is provided on the locking plate, a sliding groove is provided on the tensioning plate, one end of the tensioning plate is connected to the corner guard plate, and the other end of the tensioning plate is slidably connected to the sliding member of the locking plate through the sliding groove. A locking member is provided on the sliding member, and the locking member is used to fix the sliding member.
[0006] In some embodiments, the locking member is threadedly connected to the sliding member, a spring is sleeved on the sliding member, and the locking member fixes the sliding member by the spring.
[0007] In some embodiments, the tensioning plate is arc-shaped.
[0008] In some embodiments, multiple tensioning plates are provided.
[0009] In some embodiments, the corner guard includes an inner guard plate and a first connecting plate. The inner guard plate is arc-shaped and is used to fit against the inner ring of the bare steel coil. The first connecting plate is perpendicular to one end of the inner guard plate and is used to fit against the end of the bare steel coil.
[0010] In some embodiments, the inner protective plate and the first connecting plate are integrally formed.
[0011] In some embodiments, the connection between the inner protective plate and the first connecting plate is an arc surface.
[0012] In some embodiments, the locking plate includes an outer protective plate and a second connecting plate. The outer protective plate is arc-shaped and is used to fit against the outer ring of the bare steel coil. The second connecting plate is perpendicular to one end of the outer protective plate.
[0013] In some embodiments, the outer protective plate and the second connecting plate are integrally formed structures.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. This utility model uses corner protectors and locking plates to wrap part of the inner and outer edges of the bare steel coil. When using slings, the slings come into contact with the corner protectors and locking plates, which can prevent the inner edge of the steel coil from cutting the slings and prevent the slings from getting fuzzy due to the steel coil getting caught in them.
[0016] 2. The tensioning plate of this utility model has a sliding groove, which allows the sliding parts on the locking plate to slide along the sliding groove, so that the device can adapt to bare steel coils of different thicknesses.
[0017] 3. The locking component and the sliding component of this utility model are connected by threads. The tension plate and the locking plate can be fixed by tightening the locking component.
[0018] 4. The connection between the inner protective plate and the first connecting plate of this utility model is an arc surface, which can prevent the connection between the inner protective plate and the first connecting plate from cutting the sling. Attached Figure Description
[0019] Figure 1 This is a front view of the first state of this utility model;
[0020] Figure 2 This is a front view of the second state of the present invention;
[0021] Figure 3 This is a bottom view of the present invention;
[0022] Figure 4 This is a schematic diagram of the locking plate of this utility model.
[0023] Reference numerals: Corner guard 1; Inner guard 11; First connecting plate 12; Locking plate 2; Outer guard 21; Second connecting plate 22; Tensioning plate 3; First bolt 4; Second bolt 5; Spring 6; Dovetail nut 7. Detailed Implementation
[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0025] like Figure 1 As shown, this utility model provides a corner protection device for lifting bare steel coils, including a corner protection plate 1 and a locking plate 2. The corner protection plate 1 is used to wrap the inner edge of the bare steel coil, and the locking plate 2 is used to wrap the outer edge of the bare steel coil. The corner protection plate 1 and the locking plate 2 are connected by a tensioning plate 3, which is used to adjust the distance between the corner protection plate 1 and the locking plate 2 and fix the distance between the corner protection plate 1 and the locking plate 2.
[0026] Understandably, currently, bare steel coils are only packaged by wrapping a steel strip around the outer edge of the coil, leaving the rest exposed. The bare steel coil lifting corner protection device of this utility model can be installed on the top of both ends of the bare steel coil. The corner protection plate 1 and the locking plate 2 wrap the top of the inner and outer edges of the bare steel coil. When using lifting straps, the lifting straps contact the corner protection plate 1 and the locking plate 2, which can prevent the inner edge of the steel coil from cutting the lifting straps and prevent the lifting straps from being pulled by the steel coil.
[0027] like Figure 1 As shown, in some embodiments, a sliding member is provided on the locking plate 2. The sliding member includes a second bolt 5, which can be vertically welded to the locking plate 2 or threadedly connected to the locking plate 2, such as... Figure 2 As shown, a sliding groove is provided on the tensioning plate 3. One end of the tensioning plate 3 is connected to the corner guard plate 1, and the other end of the tensioning plate 3 is slidably connected to the sliding member of the locking plate 2 through the sliding groove. Figure 3 As shown, a locking element is provided on the sliding component to fix it in place. One end of the tension plate 3 is fixedly connected to the corner guard plate 1 via a first bolt 4. The first bolt 4 and the second bolt 5 are M10*30.
[0028] It is understandable that the tensioning plate 3 of this utility model has a sliding groove, which allows the sliding member on the locking plate 2 to slide along the sliding groove, so that the device can adapt to bare steel coils of different thicknesses.
[0029] like Figure 3 As shown, in some embodiments, the locking member is threadedly connected to the sliding member, and a spring 6 is sleeved on the sliding member. The locking member fixes the sliding member through the spring 6. The locking member can be a dovetail nut 7, with a specification of M10.
[0030] It is understandable that by rotating the locking component, the tensioning plate 3 can be pressed tightly onto the locking plate 2, so that the locking plate 2 and the corner guard plate 1 are fixedly connected, thereby fixing the locking plate 2 and the corner guard plate 1 to the end of the bare steel coil.
[0031] like Figure 1 As shown, in some embodiments, the tensioning plate 3 is arc-shaped.
[0032] In some embodiments, multiple tension plates 3 are provided. Figure 1 The diagram illustrates the case where two tension plates 3 are set, with the two tension plates 3 located near the ends of the locking plate 2. Tension plates 3 can also be set in the middle of the locking plate 2 and the corner guard plate 1.
[0033] like Figure 4 As shown, in some embodiments, the locking plate 2 includes an outer protective plate 21 and a second connecting plate 22. The outer protective plate 21 is arc-shaped and is used to fit against the outer ring of the bare steel coil. The second connecting plate 22 is perpendicular to one end of the outer protective plate 21. Figure 4 The diagram illustrates the extension of the second connecting plate 22 in the direction of the arching of the outer protective plate 21. The second connecting plate 22 can also extend in the opposite direction, at which point the second connecting plate 22 can fit against the end of the bare steel coil.
[0034] In some embodiments, the outer protective plate 21 and the second connecting plate 22 are integrally formed structures.
[0035] In some embodiments, the structure of the corner guard 1 is similar to... Figure 4 The locking plate 2 shown in the diagram has the same structure, only the size is different. The corner guard plate 1 includes an inner guard plate 11 and a first connecting plate 12. The inner guard plate 11 is arc-shaped and is used to fit with the inner ring of the bare steel coil. The first connecting plate 12 is perpendicular to one end of the inner guard plate 11 and is used to fit with the end of the bare steel coil.
[0036] In some embodiments, the inner protective plate 11 and the first connecting plate 12 are integrally formed structures.
[0037] In some embodiments, the connection between the inner protective plate 11 and the first connecting plate 12 is an arc surface, which can prevent the connection between the inner protective plate 11 and the first connecting plate 12 from cutting the sling.
[0038] This utility model provides a specific dimension: Corner guard 1 specifications: the length of the inner guard 11 is 367.7mm, the inner diameter of the inner guard 11 is 500mm, the width of the inner guard 11 is 87mm, the height of the first connecting plate 12 is 42mm, the arc is 45 degrees, and the thickness of the inner guard 11 and the first connecting plate 12 is 2mm.
[0039] Specifications of locking plate 2: The length of outer protective plate 21 is 468.2mm, the inner diameter of outer protective plate 21 is 1200mm, the width of outer protective plate 21 is 87mm, the height of second connecting plate 22 is 42mm, the arc is 45 degrees, and the thickness of outer protective plate 21 and second connecting plate 22 is 2mm.
[0040] Tensioner plate specification 3: length 280mm, width 28mm, thickness 6mm, groove width 10mm;
[0041] This size of bare steel coil lifting corner protector can be used for steel coils with an inner diameter of 450-600mm to an outer diameter of 650-1200mm.
[0042] The method of using this bare steel coil hoisting corner protector is as follows:
[0043] Fit the inner protective plate 11 of the corner protector 1 to the inner ring near the top of one end of the bare steel coil. Fit the first connecting plate 12 of the corner protector 1 to one end of the bare steel coil. Move the locking plate 2 towards the corner protector 1. This makes the outer protective plate 21 of the locking plate 2 tightly fit against the outer ring of the bare steel coil. Tighten the dovetail nut 7 to fix the locking plate 2. At this point, the installation of the corner protector device at one end of the bare steel coil is complete. Next, install the corner protector device at the other end of the bare steel coil. After installation, pass the sling through the bare steel coil and use the hoisting equipment to hoist it. At this time, the sling is in contact with the two bare steel coil hoisting corner protector devices at both ends of the bare steel coil, and no cutting or scratching will occur.
[0044] This invention eliminates the risk of cutting the lifting slings at both ends of steel coils during hoisting. It also significantly reduces the cost of spare parts and materials. Before using the bare-coated steel coil lifting corner protector, the service life of each lifting sling in the Simaodun warehouse was 1000 tons / sling. After using the bare-coated steel coil lifting corner protector, the service life of each lifting sling is 4000 tons / sling. Based on an average monthly output of 30,000 tons and a sling price of 200 yuan / sling, this results in an annual saving of 54,000 yuan in lifting sling costs.
[0045] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.
Claims
1. A corner protection device for lifting bare steel coils, characterized in that: It includes a corner guard (1) and a locking plate (2). The corner guard (1) is used to wrap the inner edge of the bare steel coil, and the locking plate (2) is used to wrap the outer edge of the bare steel coil. The corner guard (1) and the locking plate (2) are connected by a tensioning plate (3). The tensioning plate (3) is used to adjust the distance between the corner guard (1) and the locking plate (2) and fix the distance between the corner guard (1) and the locking plate (2).
2. The corner protection device for lifting bare steel coils according to claim 1, characterized in that: The locking plate (2) is provided with a sliding member, the tensioning plate (3) is provided with a sliding groove, one end of the tensioning plate (3) is connected to the corner guard plate (1), and the other end of the tensioning plate (3) is slidably connected to the sliding member of the locking plate (2) through the sliding groove. The sliding member is provided with a locking member, which is used to fix the sliding member.
3. The corner protection device for lifting bare steel coils according to claim 2, characterized in that: The locking member is threadedly connected to the sliding member, and a spring (6) is sleeved on the sliding member. The locking member fixes the sliding member through the spring (6).
4. The corner protection device for lifting bare steel coils according to claim 2, characterized in that: The tensioning plate (3) is arc-shaped.
5. The corner protection device for lifting bare steel coils according to claim 2, characterized in that: Multiple tensioning plates (3) are provided.
6. The corner protection device for lifting bare steel coils according to any one of claims 1 to 5, characterized in that: The corner guard (1) includes an inner guard plate (11) and a first connecting plate (12). The inner guard plate (11) is arc-shaped and is used to fit against the inner ring of the bare steel coil. The first connecting plate (12) is perpendicular to one end of the inner guard plate (11) and is used to fit against the end of the bare steel coil.
7. The corner protection device for lifting bare steel coils according to claim 6, characterized in that: The inner protective plate (11) and the first connecting plate (12) are integrally formed structures.
8. The corner protection device for lifting bare steel coils according to claim 6, characterized in that: The connection between the inner protective plate (11) and the first connecting plate (12) is an arc surface.
9. The corner protection device for lifting bare steel coils according to any one of claims 1 to 5, characterized in that: The locking plate (2) includes an outer protective plate (21) and a second connecting plate (22). The outer protective plate (21) is arc-shaped and is used to fit against the outer ring of the bare steel coil. The second connecting plate (22) is perpendicular to one end fixed to the outer protective plate (21).
10. The corner protection device for lifting bare steel coils according to claim 9, characterized in that: The outer protective plate (21) and the second connecting plate (22) are integrally formed structures.