Adjustable bundling sling

Abstract

The utility model provides a kind of adjustable binding hoisting belt, it includes annular hoisting belt, two strip hoisting belts and length adjusting member. First, length adjusting member is installed on annular hoisting belt, so that the hoisting belt can be flexibly adjusted length according to the volume and shape of hoisting object, significantly improve the adaptability and use efficiency of product, avoid the problem of frequent replacement hoisting belt due to object specification change, thereby reduce operating cost, improve work continuity, while length adjusting member makes length adjustment firm, there is no loosening or sliding phenomenon in use process, ensure the reliability and stability in hoisting process. Secondly, hoisting belt body adopts multilayer composite structure, greatly enhances its overall carrying strength, wear resistance, environmental resistance and safety performance, effectively prolongs product service life, simultaneously adapts to the operation demand under a variety of severe working conditions. Therefore, the hoisting belt has significant advantages in strength, adjustment flexibility and the like.

Description

Technical Field

[0001] This utility model relates to the field of lifting sling technology, specifically an adjustable binding lifting sling. Background Technology

[0002] With the rapid development of the industrial sector, especially in machinery manufacturing, construction, and port loading and unloading, the frequency and complexity of lifting operations are increasing, placing higher demands on the safety, flexibility, and efficiency of lifting equipment. Lifting slings, as commonly used flexible lifting tools, play a crucial role in practical applications. However, existing lifting sling products generally have certain limitations and struggle to meet the diverse lifting needs of modern times.

[0003] Traditional lifting slings are mostly of fixed specifications, with essentially fixed lengths and joint types. When faced with lifting objects of different sizes, shapes, or weights, it is often necessary to change to matching lifting slings, which not only increases operating costs but also affects operational efficiency. In actual operations, due to frequent changes in the lifting environment, on-site workers need to adjust the length of the lifting slings according to the object. This requirement cannot be flexibly met by traditional products, easily leading to inconvenience and even safety hazards. In addition, most current lifting slings are mainly made of a single material such as polyester fiber weaving, which often lacks durability and safety performance, posing a certain risk of breakage. Therefore, it is necessary to provide an adjustable binding lifting sling with high structural strength, length adjustment function, and good performance and visibility to meet the comprehensive requirements of high adaptability, high efficiency, and high safety of lifting equipment in modern industrial environments. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an adjustable binding and lifting sling, which effectively improves upon the problems of low structural strength, inflexible length adjustment, narrow applicability, and low safety performance of some traditional lifting slings.

[0005] An adjustable rigging sling includes a ring sling, two strip slings, and a length adjustment element. One end of each strip sling is connected to the ring sling, and the other end of each strip sling is configured with a connecting eyelet. Both the ring sling and the strip slings comprise a high molecular weight polyethylene fiber layer, a fine steel wire layer covering the high molecular weight polyethylene fiber layer, a composite fiber layer covering the fine steel wire layer, a waterproof layer covering the composite fiber layer, a fireproof layer covering the waterproof layer, and a composite wear-resistant layer covering the fireproof layer. A warning layer is provided on the side of the composite wear-resistant layer; the length adjustment component is installed at the annular lifting belt, the length adjustment component includes a D-ring buckle, and thick vertical plates are integrally provided at both ends of the D-ring buckle in the length direction and perpendicularly connected to the D-ring buckle. Each of the two thick vertical plates has a corresponding sliding groove, and an abutment plate is slidably provided on the two sliding grooves. Multiple ball notches are densely arranged on the side of the abutment plate facing the D-ring buckle. A horizontal plate is provided at the end of the two thick vertical plates away from the D-ring buckle. Multiple threaded holes are provided on the horizontal plate, and bolts are rotatably provided at the threaded holes.

[0006] Preferably, the abutment plate has an annular groove recessed into the other side on the side near the horizontal plate, and the bolt has a disc corresponding to the annular groove on the side near the abutment plate, the diameter of the disc being slightly smaller than the diameter of the annular groove.

[0007] Preferably, the outer surface of the swivel buckle is provided with a frosted raised strip.

[0008] Preferably, the composite fiber layer comprises a predetermined number of polyamide synthetic fiber warp yarns, a predetermined number of fine steel wire warp yarns, a predetermined number of polypropylene fiber weft yarns, and a predetermined number of fine steel wire weft yarns. The polyamide synthetic fiber warp yarns and the polypropylene fiber weft yarns are interwoven, and the fine steel wire warp yarns and the fine steel wire weft yarns are interspersed in the middle.

[0009] Preferably, the high molecular weight polyethylene fiber layer comprises a predetermined number of high molecular weight polyethylene fiber warp yarns and a predetermined number of high molecular weight polyethylene fiber weft yarns, wherein the high molecular weight polyethylene fiber warp yarns and the high molecular weight polyethylene fiber weft yarns are interwoven.

[0010] Preferably, the composite wear-resistant layer comprises a predetermined number of polyamide fiber warp and polyester fiber weft, wherein the polyamide fiber warp and the polyester fiber weft are interwoven into a herringbone pattern.

[0011] Preferably, the warning layer is a fluorescent strip sewn onto the side of the composite wear-resistant layer.

[0012] Preferably, the two strip lifting belts are movably connected to the annular lifting belt.

[0013] Preferably, the length adjusting member comprises one or more.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model provides an adjustable binding and lifting sling, comprising a ring-shaped lifting sling, two rectangular lifting slings, and a length adjustment component. First, the ring-shaped lifting sling is equipped with a length adjustment component, allowing the adjustable binding and lifting sling to flexibly adjust its length according to the volume and shape of the object being lifted. This significantly improves the product's adaptability and efficiency, avoiding the problem of frequently replacing the lifting sling due to changes in object specifications, thereby reducing operating costs and improving work continuity. Simultaneously, the length adjustment component ensures reliable length adjustment, preventing loosening or slippage during use, thus ensuring reliability and stability during lifting. Second, the lifting sling body adopts a multi-layer composite structure, greatly enhancing its overall load-bearing strength, wear resistance, environmental resistance, and safety performance, effectively extending the product's service life, and adapting to various harsh working conditions. Therefore, this adjustable binding and lifting sling has significant advantages in terms of strength, safety, adjustment flexibility, and environmental adaptability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the adjustable binding and lifting sling described in this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the strip lifting belt described in this utility model;

[0018] Figure 3 This is a schematic diagram of the length adjusting component described in this utility model;

[0019] Figure 4 This is a top view of the length adjusting component described in this utility model.

[0020] in:

[0021] 1-Strip lifting sling, 2-Ring lifting sling, 3-Length adjustment piece, 11-Eye ring, 10-High molecular weight polyethylene fiber layer, 20-Fine steel wire layer, 30-Composite fiber layer, 40-Waterproof layer, 50-Fireproof layer, 60-Composite wear-resistant layer, 70-Warning layer, 31-D-ring buckle, 32-Thick vertical plate, 34-Abutment plate, 35-Horizontal plate, 36-Bolt, 37-Frosted raised strip. Detailed Implementation

[0022] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] See Figures 1-4 This embodiment provides an adjustable binding and lifting sling, which includes a ring-shaped lifting sling 2, two rectangular lifting slings 1, and a length adjustment component 3.

[0024] Both strip lifting slings 1 are connected at one end to the annular lifting sling 2. In this application, after bending one end of the strip lifting sling 1, the annular lifting sling 2 is fitted over the bend. Then, the overlapping ends of the bends are sewn together with stitching. The other ends of the two strip lifting slings 1 are provided with eyelets 11 for connection. Both the annular lifting sling 2 and the strip lifting sling 1 include a high molecular weight polyethylene fiber layer 10, a fine steel wire layer 20 covering the outside of the high molecular weight polyethylene fiber layer 10, a composite fiber layer 30 covering the outside of the fine steel wire layer 20, a waterproof layer 40 covering the outside of the composite fiber layer 30, a fireproof layer 50 covering the outside of the waterproof layer 40, a composite wear-resistant layer 60 covering the outside of the fireproof layer 50, and a warning layer 70 disposed on the side of the composite wear-resistant layer 60. It should be noted that in this application, the annular lifting sling 2 and the strip lifting sling 1 are tightly bonded together by stitching or glue.

[0025] The length adjusting component 3 is installed at the annular lifting belt 2. The length adjusting component 3 includes a swivel buckle 31. Both ends of the swivel buckle 31 are integrally provided with thick vertical plates 32 that are perpendicularly connected to the swivel buckle 31. Each of the two thick vertical plates 32 has a corresponding sliding groove. An abutment plate 34 is slidably provided on the two sliding grooves. Multiple ball notches are densely arranged on the side of the abutment plate 34 facing the swivel buckle 31. A horizontal plate 35 is provided at the end of the two thick vertical plates 32 away from the swivel buckle 31. Multiple threaded holes are provided on the horizontal plate 35. Bolts 36 are rotatably provided at the threaded holes.

[0026] Preferably, the abutment plate 34 has an annular groove recessed into the horizontal plate 35 on one side, and the bolt 36 has a disc corresponding to the annular groove on the side near the abutment plate 34, the diameter of the disc being slightly smaller than the diameter of the annular groove. When the bolt 36 is tightened, the disc can be embedded in the annular groove to form a stable pressing fit, firmly pressing the abutment plate 34 against the surface of the hoisting sling, thereby effectively limiting the sliding displacement of the hoisting sling. At the same time, the disc's arrangement, in conjunction with the annular groove on the abutment plate 34, significantly increases the contact area, thereby dispersing the load and stress, effectively reducing the degree of local stress concentration, and ensuring the stability and safety of the length adjustment component 3.

[0027] It should be noted that when using the length adjustment component 3, firstly, the annular lifting sling 2 to be adjusted is folded in half and passed through the central through hole of the D-ring buckle 31, with an adjustment allowance reserved according to the required lifting length. At this point, the annular lifting sling 2 is initially fixed to the D-ring buckle 31 and its length is adjusted. Subsequently, the abutment plate 34, which is slidably set on the thick vertical plate 32, is brought into contact with the surface of the lifting sling and initially positioned. At this point, the ball notch on the side of the abutment plate 34 facing the D-ring buckle 31 can abut against the fibers on the surface of the lifting sling to generate micro-embedding friction, thereby enhancing the anti-slip effect and preventing the sling from slipping during the lifting process. Next, the operator tightens the bolt 36, which is set in the threaded hole of the horizontal plate 35, so that the disc at the end of the bolt 36 is pressed into the annular groove set in the abutment plate 34, forming a self-locking structure. During the clamping process, the cooperation between the disc and the groove can effectively disperse the concentrated pressure. After bolt 36 is tightened, the lifting sling is securely fastened to length adjustment component 3. When the lifting length needs to be adjusted, bolt 36 is loosened, and then the length of the annular lifting sling 2 passing through the buckle 31 is adjusted. After the adjustment is completed, bolt 36 is tightened to achieve the length adjustment.

[0028] Preferably, the outer side of the D-ring buckle 31 is provided with a frosted raised strip 37, which increases the friction between the annular lifting strap 2 and the outer ring and buckle plate of the D-ring buckle 31, making the buckle more secure.

[0029] Preferably, the composite fiber layer 30 comprises a predetermined number of polyamide synthetic fiber warp yarns, a predetermined number of fine steel wire warp yarns, a predetermined number of polypropylene fiber weft yarns, and a predetermined number of fine steel wire weft yarns. The polyamide synthetic fiber warp yarns and the polypropylene fiber weft yarns are interwoven, with the fine steel wire warp yarns and fine steel wire weft yarns interlaced in between. This composite fiber layer 30 not only combines the excellent flexibility and abrasion resistance of polyamide and polypropylene fibers, but also the interlacing of fine steel wires enhances the overall tensile strength, significantly improving the safety of the lifting sling. Simultaneously, the weaving of the fine steel wire warp and weft yarns effectively distributes the load, reduces local stress concentration, and prevents the composite fiber layer 30 from tearing or breaking under high loads or repeated use.

[0030] Preferably, the high molecular weight polyethylene (HMWPE) fiber layer 10 comprises a predetermined number of HMWPE fiber warp yarns and a predetermined number of HMWPE fiber weft yarns, wherein the HMWPE fiber warp yarns and the HMWPE fiber weft yarns are interwoven. This HMWPE fiber layer 10 forms a dense and uniform fabric structure through warp and weft interweaving, fully utilizing the extremely high tensile strength inherent in HMWPE fibers. Simultaneously, HMWPE fibers have extremely low density and excellent chemical corrosion resistance, making this layer lightweight and possessing corrosion-resistant and anti-aging properties, greatly improving the service life and safety performance of the lifting sling.

[0031] Preferably, the composite abrasion-resistant layer 60 comprises a predetermined number of polyamide fiber warp yarns and polyester fiber weft yarns, the polyamide fiber warp yarns and the polyester fiber weft yarns interwoven into a herringbone weave. The composite abrasion-resistant layer 60 of this application is a high-density and tightly bonded fabric surface layer, significantly improving the abrasion resistance of the lifting sling surface. It should be noted that polyamide fibers themselves have excellent abrasion resistance and mechanical strength, effectively resisting damage caused by repeated friction and scratching; polyester fibers possess good weather resistance and UV resistance, enhancing the abrasion-resistant layer's adaptability to harsh environments. The weaving of these two materials allows the composite abrasion-resistant layer 60 to effectively protect the inner structure from mechanical damage and environmental corrosion.

[0032] Preferably, the warning layer 70 is a fluorescent strip sewn onto the side of the composite wear-resistant layer 60. The fluorescent strip significantly improves the visibility of the lifting sling in low light or nighttime environments, effectively reminding operators of the sling's position and condition, reducing safety accidents caused by poor visibility. By sewing the fluorescent strip securely to the side of the composite wear-resistant layer 60, the durability and stability of the warning layer 70 are ensured, and the strip is prevented from falling off or shifting during use, ensuring a long-term effective warning effect.

[0033] Preferably, the two strip lifting belts 1 and the annular lifting belt 2 are movably connected. This allows for flexible combination and adjustment of the strip lifting belts 1 and the annular lifting belt 2 when adjusting their length.

[0034] Preferably, the length adjusting member 3 comprises one or more. By configuring multiple length adjusting members 3, more precise and flexible control over the length of the lifting sling can be achieved, adapting to more complex or special-shaped lifting objects, improving the safety and efficiency of lifting operations, and ensuring the tightness of the adjustment.

[0035] Preferably, the fireproof layer 50 is an aramid woven fabric, and the outer side of the aramid woven fabric is coated with a flame-retardant coating, such as a chlorinated polymer, and the waterproof layer 40 is a thermoplastic polyurethane film layer or a polyvinyl fluoride composite film layer.

[0036] This utility model provides an adjustable binding and lifting sling, comprising a ring-shaped lifting sling 2, two rectangular lifting slings 1, and a length adjustment component 3. Firstly, the length adjustment component 3 is installed on the ring-shaped lifting sling 2, allowing the adjustable binding and lifting sling to flexibly adjust its length according to the volume and shape of the object being lifted. This significantly improves the product's adaptability and efficiency, avoiding the problem of frequently replacing the lifting sling due to changes in object specifications, thereby reducing operating costs and improving work continuity. Simultaneously, the length adjustment component 3 ensures reliable length adjustment, preventing loosening or slippage during use, thus ensuring reliability and stability during lifting. Secondly, the lifting sling body adopts a multi-layer composite structure, greatly enhancing its overall load-bearing strength, wear resistance, environmental resistance, and safety performance, effectively extending the product's service life, and adapting to various harsh working conditions. Therefore, this adjustable binding and lifting sling has significant advantages in terms of strength, safety, adjustment flexibility, and environmental adaptability.

[0037] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. An adjustable binding and lifting sling, characterized in that: It includes an annular sling, two strip slings and a length adjuster. One end of each of the two strip slings is connected to the annular sling, and the other ends of the two strip slings are provided with eyelets for connection. The annular sling and the strip slings each include a high molecular weight polyethylene fiber layer, a fine steel wire layer coated on the outside of the high molecular weight polyethylene fiber layer, a composite fiber layer coated on the outside of the fine steel wire layer, a waterproof layer coated on the outside of the composite fiber layer, a fireproof layer coated on the outside of the waterproof layer, a composite wear-resistant layer coated on the outside of the fireproof layer, and a warning layer provided on the side of the composite wear-resistant layer. The length adjuster is installed at the annular sling. The length adjuster includes a D-ring. At both ends in the length direction of the D-ring, there are integrally provided thick vertical plates perpendicularly connected to the D-ring. On each of the two thick vertical plates, there is a pair of opposite chutes. A contact plate is slidably provided on the two chutes. On the side of the contact plate facing the D-ring, a plurality of spherical segments are densely arranged. At one end of the two thick vertical plates away from the D-ring, there is a horizontal plate. A plurality of threaded holes are provided in the horizontal plate, and bolts are rotatably provided at the threaded holes.

2. The adjustable binding and lifting sling as described in claim 1, characterized in that, On one side of the contact plate close to the horizontal plate, there is a sunken annular groove. On one side of the bolt close to the contact plate, there is a disc corresponding to the annular groove. The diameter of the disc is slightly smaller than the diameter of the annular groove.

3. The adjustable binding and lifting sling as described in claim 2, characterized in that, The outer side of the D-ring is provided with abrasive ridges.

4. The adjustable binding and lifting sling as described in claim 1, characterized in that, The composite fiber layer includes a predetermined number of polyamide synthetic fiber warps, a predetermined number of fine steel wire warps, a predetermined number of polypropylene fiber wefts, and a predetermined number of fine steel wire wefts. The polyamide synthetic fiber warps and the polypropylene fiber wefts are interwoven, and the fine steel wire warps and the fine steel wire wefts are interspersed in the middle.

5. The adjustable binding and lifting sling as described in claim 1, characterized in that, The high molecular weight polyethylene fiber layer includes a predetermined number of high molecular weight polyethylene fiber warps and a predetermined number of high molecular weight polyethylene fiber wefts. The high molecular weight polyethylene fiber warps and the high molecular weight polyethylene fiber wefts are interwoven.

6. The adjustable binding and lifting sling as described in claim 1, characterized in that, The composite wear-resistant layer includes a predetermined number of polyamide fiber warps and polyester fiber wefts, and the polyamide fiber warps and the polyester fiber wefts are interwoven into a herringbone structure.

7. The adjustable binding and lifting sling as described in claim 1, characterized in that, The warning layer is a fluorescent strip sewn on the side of the composite wear-resistant layer.

8. The adjustable binding and lifting sling as described in claim 1, characterized in that, The two strip slings and the annular sling are movably connected.

9. The adjustable binding and lifting sling as described in claim 1, characterized in that, The length adjuster includes one or more.

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