High load capacity flat lifting strap

Abstract

The utility model discloses a high bearing capacity flat hoisting belt, including hoisting belt main part, one end of hoisting belt main part is provided with first hoist mouth, the other end of hoisting belt main part is provided with second hoist mouth, be provided with first slot and second slot on hoisting belt main part, hoisting belt main part includes fiber layer, one side of fiber layer is provided with first rubber layer, the other side of fiber layer is provided with second rubber layer. The utility model discloses a rubber layer is wrapped fiber layer, and the elasticity of rubber can absorb the puncture kinetic energy of sharp object, reduces the puncture risk, improves the anti -puncture ability of hoisting belt, and when sharp object penetrates the outer layer rubber, will push away the sealant layer and form tiny hole, when sharp object removes, the sealant layer will fill and wrap the tiny hole left by puncture object, and is closely combined with surrounding rubber, forms the seal, repairs hoisting belt, prevents hoisting belt and leads to fiber fracture because of hole, and the length of hoisting belt is adjustable.

Description

Technical Field

[0001] This utility model relates to the field of lifting sling technology, specifically a high-load-bearing flat lifting sling. Background Technology

[0002] Lifting slings are flexible rigging used in lifting and hoisting operations. Due to their flexibility, lightweight nature, and minimal damage to the object being lifted, they are widely used in industry, construction, logistics, ports, and other fields. Lifting slings are mainly classified by structure and material. By structure, they are divided into flat lifting slings, round lifting slings, and special types of lifting slings; by material, they are divided into nylon, polyester, aramid, ultra-high molecular weight polyethylene, etc. Flat lifting slings have a rectangular cross-section, a wide bearing surface, and exert less pressure on the surface of the object being lifted. Through their material properties and structural design, flat lifting slings have become the preferred tool for modern industrial lifting operations.

[0003] Flat lifting slings, due to their soft material and high surface friction, are prone to contact with sharp objects during lifting, which can puncture them, causing fiber breakage and significantly reducing their load-bearing capacity, or even leading to breakage. Furthermore, the fixed length of the lifting sling makes length adjustment inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a high-load-bearing flat lifting sling to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-load-bearing flat lifting sling, comprising a lifting sling body, a first lifting port at one end of the lifting sling body, a second lifting port at the other end of the lifting sling body, a first groove and a second groove on the lifting sling body, the lifting sling body comprising a fiber layer, a first rubber layer on one side of the fiber layer, and a second rubber layer on the other side of the fiber layer.

[0006] A first sealant layer is provided between the first rubber layer and the fiber layer.

[0007] A second sealant layer is provided between the second rubber layer and the fiber layer.

[0008] The first slot is located near the first lifting port.

[0009] The second slot is located near the second lifting port.

[0010] The first slot and the second slot are the same size.

[0011] The edges of the fiber layer are double-lined lockstitched.

[0012] The first lifting port includes a set of closed annular openings, and the second lifting port includes a set of closed annular openings.

[0013] The first and second lifting ports are used to connect lifting equipment.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a rubber layer to wrap a fiber layer. The elasticity of the rubber can absorb the puncture kinetic energy of sharp objects, reduce the risk of puncture, and improve the puncture resistance of the lifting sling. When a sharp object penetrates the outer rubber layer, it will push away the sealing layer and form a tiny hole. After the sharp object is removed, the sealing layer will fill and wrap the tiny hole left by the puncture object and tightly bond with the surrounding rubber to form a seal, repairing the lifting sling and preventing the fibers of the lifting sling from breaking due to the hole.

[0016] 2. When the overall length of the lifting sling needs to be adjusted, one end of the lifting sling can be passed through the first slot or the second slot and then pulled out. Part of the lifting sling will then be wound around the first slot or the second slot, thereby shortening the lifting sling. Multiple turns can be made according to actual usage requirements to flexibly adjust the length of the lifting sling. The lifting sling has an integral structure without splicing or segmentation, which improves the uniformity of load transfer and the reliability against breakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a schematic diagram of the length adjustment of this utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the length adjustment of this utility model. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the main structure of the hoisting sling of this utility model.

[0022] In the diagram: 1. Lifting sling body; 11. First lifting port; 12. Second lifting port; 13. First slot; 14. Second slot; 15. Fiber layer; 16. First rubber layer; 17. Second rubber layer; 18. First sealant layer; 19. Second sealant layer. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5 This utility model provides a technical solution: a high load-bearing capacity flat lifting sling, including a lifting sling body 1, a first lifting port 11 provided at one end of the lifting sling body 1, a second lifting port 12 provided at the other end of the lifting sling body 1, a first groove 13 and a second groove 14 provided on the lifting sling body 1, the lifting sling body 1 including a fiber layer 15, a first rubber layer 16 provided on one side of the fiber layer 15, and a second rubber layer 17 provided on the other side of the fiber layer 15.

[0025] The lifting sling body 1 is composed of a rubber layer and a fiber layer 15. The first rubber layer 16, the fiber layer 15 and the second rubber layer 17 are stacked and bonded by molding or hot pressing to form a composite system of rubber layer and fiber load-bearing layer. The high elasticity, wear resistance and interfacial bonding characteristics of rubber complement the fiber material of fiber layer 15, such as polyester, nylon, aramid, etc., thereby improving the load capacity, fatigue resistance and service life of lifting sling body 1.

[0026] The first rubber layer 16 and the second rubber layer 17 are in direct contact with the suspended object, dispersing local pressure and resisting friction. The fiber layer 15 is woven from high-strength fibers, such as aramid and high-strength nylon, providing the main load-bearing capacity. The elastic deformation of the first rubber layer 16 and the second rubber layer 17 can buffer the instantaneous impact during the hoisting process, such as the falling of heavy objects, and reduce the stress concentration of the fiber layer 15. The breakage of fibers is usually caused by local high stress. At the same time, the high adhesion of the first rubber layer 16 and the second rubber layer 17 can prevent the fiber layer 15 from delaminating when stretched. The rubber layer wraps the fiber layer 15, and the elasticity of the rubber can absorb the puncture kinetic energy of sharp objects, reduce the risk of puncture, and improve the puncture resistance of the hoisting sling body 1.

[0027] A first sealant layer 18 is provided between the first rubber layer 16 and the fiber layer 15.

[0028] A second sealant layer 19 is provided between the second rubber layer 17 and the fiber layer 15. Both the first sealant layer 18 and the second sealant layer 19 have high adhesion and low viscosity.

[0029] When a sharp object penetrates the outer rubber layer, it pushes open the sealant layer and forms a tiny hole. After the sharp object is removed, the first sealant layer 18 and the second sealant layer 19 fill and wrap the tiny hole left by the puncture, and tightly bond with the surrounding rubber to form a seal, repairing the lifting sling body 1 and preventing the fibers of the lifting sling body 1 from breaking due to the hole.

[0030] The first slot 13 is located near the first lifting port 11 and is used to adjust the length of one end of the lifting belt body 1.

[0031] The second slot 14 is located near the second lifting port 12 and is used to adjust the length of the other end of the lifting belt body 1.

[0032] The first slot 13 and the second slot 14 are the same size.

[0033] like Figure 3 and Figure 4 As shown, when it is necessary to adjust the overall length of the lifting sling body 1, one end of the lifting sling body 1 can be passed through the first slot 13 or the second slot 14. After passing through, it can be pulled out, and part of the lifting sling will be wound around the first slot 13 or the second slot 14, thereby shortening the lifting sling body 1. By winding it multiple times according to actual usage requirements, the length of the lifting sling body 1 can be flexibly adjusted. The lifting sling body 1 is an integral structure without splicing or segmentation, which improves the uniformity of load transfer and the reliability against breakage.

[0034] The edge of the fiber layer 15 is double-stitched with lockstitch. Through the synergistic effect of two independent stitches, the edge fibers of the fiber layer 15 of the lifting sling are tightly locked to prevent edge tearing caused by stretching, friction or impact. Two independent stitches, usually high-strength nylon or polyester threads, are used to stitch the edge in parallel or cross stitches to form a redundant structure of main stitch plus spare stitch. When one stitch breaks due to long-term fatigue or accidental damage, the other stitch can still maintain the edge lock state to prevent the edge from suddenly loosening, thereby improving the load-bearing capacity of the lifting sling body 1.

[0035] The first lifting port 11 includes a set of closed annular openings, and the second lifting port 12 includes a set of closed annular openings. The materials of the first lifting port 11 and the second lifting port 12 are the same as the material of the lifting sling body 1.

[0036] The first lifting port 11 and the second lifting port 12 are used to connect the lifting equipment. The lifting port of the lifting sling body 1 is the key part for connecting with the lifting equipment, such as hooks, shackles, crane slings, etc. Closed annular openings are formed at both ends of the lifting sling body 1 through a stitching process. The size of the annular openings of the first lifting port 11 and the second lifting port 12 is adjusted according to the width of the lifting sling. They can be directly hooked onto hooks or shackles and are suitable for most conventional lifting scenarios. The core function of the lifting port is to evenly transfer the load, prevent local stress concentration, and ensure reliable connection.

[0037] Working principle: During use, adjust the length of the lifting sling body 1 according to actual needs. When adjusting, pass one end of the lifting sling body 1 through the first slot 13 or the second slot 14, and then pull it out. Part of the lifting sling will then wrap around the first slot 13 or the second slot 14, thereby shortening the lifting sling body 1. Adjust by multiple turns according to actual needs. After adjustment, the rubber layer wraps around the fiber layer 15. The elasticity of the rubber can absorb the puncture kinetic energy of sharp objects, reduce the risk of puncture, and improve the puncture resistance of the lifting sling. Wrap the lifting sling body 1 around the bottom of the object, adjust the length on both sides to ensure symmetry, and tie a knot to fix it. Then, directly put the first lifting port 11 and the second lifting port 12 of the lifting sling body 1 into the hook of the lifting equipment, ensuring that the hook is fully closed. Use the lifting equipment to lift the object and transport it to the designated location.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-load-bearing flat lifting sling, comprising a lifting sling body (1), characterized in that: The lifting sling body (1) has a first lifting port (11) at one end and a second lifting port (12) at the other end. The lifting sling body (1) has a first slot (13) and a second slot (14). The lifting sling body (1) includes a fiber layer (15). A first rubber layer (16) is provided on one side of the fiber layer (15), and a second rubber layer (17) is provided on the other side of the fiber layer (15).

2. The high-load-bearing flat lifting sling according to claim 1, characterized in that: A first sealant layer (18) is provided between the first rubber layer (16) and the fiber layer (15).

3. The high-load-bearing flat lifting sling according to claim 1, characterized in that: A second sealant layer (19) is provided between the second rubber layer (17) and the fiber layer (15).

4. The high-load-bearing flat lifting sling according to claim 1, characterized in that: The first slot (13) is located near the first lifting port (11).

5. The high-load-bearing flat lifting sling according to claim 1, characterized in that: The second slot (14) is located near the second lifting port (12).

6. The high-load-bearing flat lifting sling according to claim 1, characterized in that: The first slot (13) and the second slot (14) are the same size.

7. The high-load-bearing flat lifting sling according to claim 1, characterized in that: The edges of the fiber layer (15) are double-lined lockstitched.

8. The high-load-bearing flat lifting sling according to claim 1, characterized in that: The first lifting port (11) includes a set of closed annular openings, and the second lifting port (12) includes a set of closed annular openings.

9. The high-load-bearing flat lifting sling according to claim 1, characterized in that: The first lifting port (11) and the second lifting port (12) are used to connect the lifting equipment.

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