A bare steel coil hoisting guard ring

By employing a composite structure consisting of an ultra-soft polyurethane layer, a graphene-modified polyurethane layer, and a chopped aramid fiber-reinforced polyurethane layer, combined with reinforcement and stabilization mechanisms, the strength and protection issues of the lifting guard ring are resolved, achieving high wear resistance and cushioning protection, and extending its service life.

CN224493409UActive Publication Date: 2026-07-14LIAONING SHENGHUA RONGCHUANG METALLURGICAL TECHNOLOGY DEVELOPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIAONING SHENGHUA RONGCHUANG METALLURGICAL TECHNOLOGY DEVELOPMENT CO LTD
Filing Date
2025-07-14
Publication Date
2026-07-14

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Abstract

The utility model relates to hoist guard ring technical field discloses a kind of bare winding steel coil hoist guard rings, including super-soft polyurethane layer, the outside of super-soft polyurethane layer is provided with graphene modified polyurethane layer, the inside of super-soft polyurethane layer is provided with connecting groove. The utility model hoist guard ring has polyurethane composite layer steel coil hoist guard ring with high strength, high wear resistance and buffering protection function, reduce steel coil hoist damage, prolong the service life of guard ring, there is reinforcing mechanism on the outside of short-cut aramid fiber reinforced polyurethane layer, the huge pressure of lifting belt can be more evenly dispersed to the larger area of guard ring, reduce local stress concentration point, avoid the collapse or rupture of guard ring ontology due to local stress too large;By being provided with stabilizing mechanism, the fixation between positioning threaded column and reinforcing sleeve can be conveniently completed, can be reinforced and provided with additional support, maintain the overall shape and contour stability of guard ring.
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Description

Technical Field

[0001] This utility model relates to the field of lifting guard ring technology, and in particular to a lifting guard ring for bare coiled steel coils. Background Technology

[0002] Bare steel coils have no packaging layer on their surface, and traditional metal or nylon protective rings are prone to scratching the surface of the steel coils, affecting the quality of subsequent processing. As a key protective device in industrial logistics, steel coil lifting protective rings need to protect the surface of the steel coils from mechanical damage such as scratches and indentations during the lifting process. At the same time, they need to have sufficient load-bearing capacity and environmental adaptability. Traditional protective rings are mostly made of metal, nylon or ordinary polyurethane materials.

[0003] However, existing lifting rings, when used, struggle to balance high strength and high elasticity with a single material. For example, ordinary polyurethane rings are prone to softening and deformation at high temperatures, while metal rings are heavy and easily scratch the surface of the steel coil. Therefore, those skilled in the art have provided a bare coil lifting ring to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a lifting guard ring for bare steel coils.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lifting guard ring for bare steel coils, comprising an ultra-soft polyurethane layer, a graphene-modified polyurethane layer disposed on the outer side of the ultra-soft polyurethane layer, a connecting groove opened inside the ultra-soft polyurethane layer, a chopped aramid fiber reinforced polyurethane layer disposed on the outer side of the ultra-soft polyurethane layer, a reinforcing mechanism installed on the outer side of the chopped aramid fiber reinforced polyurethane layer, and a stabilizing mechanism connected to the outer side of the ultra-soft polyurethane layer.

[0006] The reinforcement mechanism includes a lower mounting pad, a lower fixing plate fixed to the top of the lower mounting pad, an upper mounting pad installed on the outer side of the chopped aramid fiber reinforced polyurethane layer, an upper fixing plate fixed to the bottom of the upper mounting pad, a lower half-threaded post fixed to the outer side of the lower fixing plate, an upper half-threaded post installed on the outer side of the upper mounting pad, a washer movably sleeved on the outer sides of the lower half-threaded post and the upper half-threaded post, and a metal nut threadedly connected to the outer sides of the lower half-threaded post and the upper half-threaded post.

[0007] As a further description of the above technical solution:

[0008] The upper fixing plate and the lower fixing plate are fitted together, and the upper half threaded column and the lower half threaded column are fitted together.

[0009] By adopting the above technical solution, connection and assembly are easy to carry out.

[0010] As a further description of the above technical solution:

[0011] The radius of the upper threaded post is equal to that of the lower threaded post, and the outer side of the metal nut is provided with anti-slip texture.

[0012] By adopting the above technical solution, it is easy for users to turn the metal nut.

[0013] As a further description of the above technical solution:

[0014] The interior of the ultra-soft polyurethane layer has a through groove, and the corresponding surface of the gasket is in contact with the outer side of the upper fixing plate and the lower fixing plate.

[0015] As a further description of the above technical solution:

[0016] The corresponding surface of the metal nut is in close contact with the washer, and the lower mounting pad and the chopped aramid fiber reinforced polyurethane layer are fixedly connected.

[0017] By adopting the above technical solution, the connection between the lower mounting pad and the chopped aramid fiber reinforced polyurethane layer can be ensured to be stable.

[0018] As a further description of the above technical solution:

[0019] The stabilizing mechanism includes a positioning threaded post, an mounting plate is movably sleeved on the outer side of the positioning threaded post, a positioning nut is threadedly connected to the outer side of the positioning threaded post, and an anti-detachment slider is slidably connected to the outer side of the ultra-soft polyurethane layer through a sliding groove.

[0020] As a further description of the above technical solution:

[0021] A handle pad is fixed to the outside of the anti-detachment slider, and a reinforcing sleeve is fixed to the bottom of the anti-detachment slider.

[0022] As a further description of the above technical solution:

[0023] The reinforcing sleeve is movably fitted onto the outside of the positioning threaded post, and the positioning threaded post and the ultra-soft polyurethane layer are fixedly connected.

[0024] By adopting the above technical solution, the fixing between the positioning threaded post and the reinforcing sleeve can be easily completed.

[0025] This utility model has the following beneficial effects:

[0026] 1. Compared with existing technologies, the lifting guard ring of this device is a polyurethane composite layer steel coil lifting guard ring with high strength, high wear resistance and buffer protection function, which reduces steel coil lifting damage and extends the service life of the guard ring. A reinforcement mechanism is set on the outside of the short aramid fiber reinforced polyurethane layer, which can distribute the huge pressure applied by the sling more evenly to a larger area of ​​the guard ring, reduce local stress concentration points and prevent the guard ring body from being crushed or broken due to excessive local stress.

[0027] 2. Compared with the existing technology, the bare coil steel lifting guard ring, by setting a stabilizing mechanism, can easily complete the fixing between the positioning threaded column and the reinforcing sleeve, can be reinforced and provide additional support, and maintain the overall shape and contour stability of the guard ring. Attached Figure Description

[0028] Figure 1 A perspective view of a lifting guard ring for bare coiled steel coils proposed in this utility model;

[0029] Figure 2 This is a schematic diagram of the outer structure of a reinforcement mechanism for a lifting guard ring of a bare rolled steel coil proposed in this utility model;

[0030] Figure 3 This is a schematic diagram of a reinforcement mechanism for a lifting guard ring of a bare rolled steel coil proposed in this utility model;

[0031] Figure 4 This utility model Figure 1 A magnified diagram of region A.

[0032] Legend:

[0033] 1. Ultra-soft polyurethane layer; 2. Graphene-modified polyurethane layer; 3. Connecting groove; 4. Short-cut aramid fiber reinforced polyurethane layer; 5. Reinforcing mechanism; 51. Lower mounting pad; 52. Lower fixing plate; 53. Upper mounting pad; 54. Upper fixing plate; 55. Lower half-threaded post; 56. Upper half-threaded post; 57. Washer; 58. Metal nut; 6. Stabilizing mechanism; 61. Positioning threaded post; 62. Mounting pad; 63. Positioning nut; 64. Anti-detachment slider; 65. Handle pad; 66. Reinforcing sleeve. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-4The present invention provides a lifting guard for bare steel coils, comprising an ultra-soft polyurethane layer 1, a graphene-modified polyurethane layer 2 on the outer side of the ultra-soft polyurethane layer 1, a connecting groove 3 inside the ultra-soft polyurethane layer 1, a short-cut aramid fiber reinforced polyurethane layer 4 on the outer side of the ultra-soft polyurethane layer 1, a reinforcing mechanism 5 installed on the outer side of the short-cut aramid fiber reinforced polyurethane layer 4, and a stabilizing mechanism 6 connected to the outer side of the ultra-soft polyurethane layer 1.

[0036] The reinforcement mechanism 5 includes a lower mounting pad 51, a lower fixing plate 52 fixed to the top of the lower mounting pad 51, an upper mounting pad 53 mounted on the outer side of the chopped aramid fiber reinforced polyurethane layer 4, an upper fixing plate 54 fixed to the bottom of the upper mounting pad 53, a lower half-threaded post 55 fixed to the outer side of the lower fixing plate 52, an upper half-threaded post 56 mounted on the outer side of the upper mounting pad 53, a washer 57 movably sleeved on the outer sides of the lower half-threaded post 55 and the upper half-threaded post 56, and a metal nut 58 threadedly connected to the outer sides of the lower half-threaded post 55 and the upper half-threaded post 56. The upper fixing plate 54 and... The corresponding surfaces of the lower fixing plate 52 are fitted together, and the corresponding surfaces of the upper half threaded post 56 and the lower half threaded post 55 are fitted together, which facilitates connection and assembly. The radius of the upper half threaded post 56 is equal to that of the lower half threaded post 55. The outer side of the metal nut 58 is provided with anti-slip texture, which makes it easy for the user to rotate the metal nut 58. The interior of the ultra-soft polyurethane layer 1 is provided with a through groove. The corresponding surface of the gasket 57 is fitted with the outer side of the upper fixing plate 54 and the lower fixing plate 52. The corresponding surface of the metal nut 58 is tightly attached to the gasket 57. The lower mounting pad 51 and the short-cut aramid fiber reinforced polyurethane layer 4 are fixedly connected.

[0037] The stabilizing mechanism 6 includes a positioning threaded post 61, a mounting plate 62 is movably sleeved on the outside of the positioning threaded post 61, a positioning nut 63 is threadedly connected to the outside of the positioning threaded post 61, an anti-detachment slider 64 is slidably connected to the outside of the ultra-soft polyurethane layer 1 through a sliding groove, a handle pad 65 is fixed to the outside of the anti-detachment slider 64, a reinforcing sleeve 66 is fixed to the bottom of the anti-detachment slider 64, the reinforcing sleeve 66 is movably sleeved on the outside of the positioning threaded post 61, and the positioning threaded post 61 and the ultra-soft polyurethane layer 1 are fixedly connected.

[0038] Working Principle: The lifting guard ring of this device has a composite structure. The ultra-soft polyurethane layer 1 is made of ultra-soft polyurethane with a thickness of 5mm to reduce friction with the bare steel coil. The short-cut aramid fiber reinforced polyurethane layer 4 is made of short-cut aramid fiber reinforced polyurethane to disperse lifting stress. The graphene-modified polyurethane layer 2 is made of graphene-modified polyurethane with a thickness of 3mm and a fish-scale anti-slip texture on the surface. During production, the aramid fiber reinforced polyurethane matrix is ​​first molded, then the ultra-soft polyurethane layer is injected into the inside of the matrix and impregnated with silicone oil. Finally, a graphene-polyurethane mixed slurry is sprayed on the surface, and the wear-resistant layer and anti-slip texture are formed by hot pressing. This polyurethane composite steel coil lifting guard ring has high strength, high wear resistance and cushioning protection functions, reducing steel coil lifting damage and extending the service life of the guard ring. A reinforcement mechanism 5 is set on the outside of the short-cut aramid fiber reinforced polyurethane layer 4. After the corresponding surfaces of the upper fixing plate 54 and the lower fixing plate 52 are attached, the upper half-threaded post 5 on the outside of the upper fixing plate 54... The upper half threaded post 56 and the lower half threaded post 55 are fitted together, and the washer 57 is movably sleeved on the outside of the upper half threaded post 56 and the lower half threaded post 55. Finally, the metal nut 58 is threadedly connected to the lower half threaded post 55 and the upper half threaded post 56. This can distribute the huge pressure applied by the sling more evenly to a larger area of ​​the protective ring, reduce local stress concentration points, and prevent the protective ring body from being crushed or broken due to excessive local stress. With the stabilizing mechanism 6, the user can push the handle pad 65 to move, so that the handle pad 65 drives the anti-detachment slider 64 and the reinforcing sleeve 66 to move. The reinforcing sleeve 66 is movably sleeved on the outside of the positioning threaded post 61, and the mounting pad 62 is movably sleeved on the outside of the positioning threaded post 61. After that, the positioning nut 63 is threadedly connected to the positioning threaded post 61. This can easily complete the fixation between the positioning threaded post 61 and the reinforcing sleeve 66, which can strengthen and provide additional support, and maintain the overall shape and contour stability of the protective ring.

[0039] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting guard ring for bare coiled steel, comprising an ultra-soft polyurethane layer (1), characterized in that: A graphene-modified polyurethane layer (2) is provided on the outside of the ultra-soft polyurethane layer (1). A connecting groove (3) is provided inside the ultra-soft polyurethane layer (1). A short-cut aramid fiber reinforced polyurethane layer (4) is provided on the outside of the ultra-soft polyurethane layer (1). A reinforcement mechanism (5) is installed on the outside of the short-cut aramid fiber reinforced polyurethane layer (4). A stabilizing mechanism (6) is connected to the outside of the ultra-soft polyurethane layer (1). The reinforcement mechanism (5) includes a lower mounting pad (51), a lower fixing plate (52) is fixed to the top of the lower mounting pad (51), an upper mounting pad (53) is installed on the outside of the short-cut aramid fiber reinforced polyurethane layer (4), an upper fixing plate (54) is fixed to the bottom of the upper mounting pad (53), a lower half-threaded column (55) is fixed to the outside of the lower fixing plate (52), an upper half-threaded column (56) is installed on the outside of the upper mounting pad (53), a washer (57) is movably sleeved on the outside of the lower half-threaded column (55) and the upper half-threaded column (56), and a metal nut (58) is threadedly connected to the outside of the lower half-threaded column (55) and the upper half-threaded column (56).

2. The lifting guard ring for bare coiled steel as described in claim 1, characterized in that: The upper fixing plate (54) and the lower fixing plate (52) are fitted together on their corresponding surfaces, and the upper half threaded column (56) and the lower half threaded column (55) are fitted together on their corresponding surfaces.

3. The lifting guard ring for bare coiled steel as described in claim 2, characterized in that: The radius of the upper threaded post (56) is equal to that of the lower threaded post (55), and the metal nut (58) has anti-slip texture on its outer side.

4. The lifting guard ring for bare coiled steel as described in claim 3, characterized in that: The interior of the ultra-soft polyurethane layer (1) has a through groove, and the corresponding surface of the gasket (57) is in contact with the outer side of the upper fixing plate (54) and the lower fixing plate (52).

5. A lifting guard ring for bare coiled steel as described in claim 4, characterized in that: The corresponding surface of the metal nut (58) is in close contact with the washer (57), and the lower mounting pad (51) and the short-cut aramid fiber reinforced polyurethane layer (4) are fixedly connected.

6. A lifting guard ring for bare coiled steel as described in claim 1, characterized in that: The stabilizing mechanism (6) includes a positioning threaded post (61), an mounting plate (62) is movably sleeved on the outside of the positioning threaded post (61), a positioning nut (63) is threadedly connected to the outside of the positioning threaded post (61), and an anti-detachment slider (64) is slidably connected to the outside of the ultra-soft polyurethane layer (1) through a groove.

7. A lifting guard ring for bare coiled steel as described in claim 6, characterized in that: A handle pad (65) is fixed to the outside of the anti-detachment slider (64), and a reinforcing sleeve (66) is fixed to the bottom of the anti-detachment slider (64).

8. A lifting guard ring for bare coiled steel as described in claim 7, characterized in that: The reinforcing sleeve (66) is movably sleeved on the outside of the positioning threaded post (61), and the positioning threaded post (61) and the ultra-soft polyurethane layer (1) are fixedly connected.