High-toughness circular lifting belt

Abstract

The utility model discloses a high-toughness circular lifting belt, which relates to the technical field of lifting belts and comprises a composite lifting belt, the composite lifting belt is composed of a composite layer, and the bottom of the composite lifting belt is fixedly connected with a guide rail. By the adoption of the structure, the aramid fiber braid layer provides high strength and toughness, and hoisting safety is guaranteed; the carbon fiber inner core enhances the strength and is light; the fire risk is reduced by the flame retardant layer; the nylon fiber layer increases wear resistance and flexibility, adapts to hoisting of objects in different shapes and reduces damage to the surface of the hoisted object; meanwhile, through a positioning assembly and an adjusting assembly, a screw rod can be driven to rotate by twisting an adjusting knob, so that a sliding block slides in a guide rail, then a clamping frame is driven to displace for clamping and positioning, and then a hand-twisting type screw rod is used for fixing, so that the use convenience is improved; and a safe and efficient solution is provided for heavy object hoisting in industries such as building and logistics.

Description

Technical Field

[0001] This utility model belongs to the field of lifting sling technology, and specifically relates to a high-toughness circular lifting sling. Background Technology

[0002] Lifting slings are flexible lifting tools used for lifting and moving heavy objects. The surface of lifting slings is generally smooth, which can reduce damage to the surface of the object being lifted. For example, when lifting some precision equipment with easily scratched surfaces or materials with smooth coatings, they can protect them well. Both ends of the sling have specially designed connecting parts, such as metal rings or hooks, which are used to connect with lifting equipment such as cranes and hoists, making it convenient to carry out lifting operations in various situations. They are widely used in many fields such as port loading and unloading, construction engineering, and material handling in factory workshops.

[0003] Chinese patent publication number "CN203392723U" discloses a lifting sling, which includes a load-bearing sling made of flat webbing stitched together. The load-bearing sling has lifting rings formed by webbing at both ends. A label containing various information about the use of the sling is attached to the load-bearing sling. The outer surface of the label is covered with a plastic film. This lifting sling has the following advantages: it extends the service life under the same conditions; the plastic protective film on the outer surface of the label, sewn together with the label onto the lifting sling, effectively avoids the problem of illegible text on the label due to oxidation or other factors, allowing users to clearly distinguish the usage conditions of the lifting sling and preventing misuse; and it effectively prevents losses caused by sudden breakage of the lifting sling due to overload.

[0004] While the aforementioned device possesses a certain level of strength in practical applications, it clearly lacks superior tensile strength and toughness throughout its overall use. The structure of the plastic film and plastic abrasion-resistant layer is relatively simple, and its limitations become apparent when facing complex usage scenarios. The combination of the plastic film and abrasion-resistant layer exhibits significant deficiencies in tensile strength. When faced with large tensile forces or sudden external impacts, this structure may not be able to effectively withstand and disperse stress, thus increasing the risk of device damage. To ensure stable and reliable operation of the device under various harsh working environments and to meet higher usage requirements, its improvement is imperative. Only through continuous optimization and upgrading of the structural design to improve its tensile strength and toughness can the device realize greater value in practical applications. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a high-toughness circular lifting sling to solve the problem of low overall tensile load-bearing toughness during the application of the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A high-toughness circular lifting sling includes a composite lifting sling composed of composite layers. A guide rail is fixedly connected to the bottom of the composite lifting sling. An adjustment component is movably connected inside the guide rail. Positioning components are installed through the guide rail at both ends of the adjustment component. Clamping frames are fixedly connected to both sides of the bottom of the adjustment component.

[0008] The adjusting assembly includes a lead screw, which is rotatably connected to the inside of the guide rail. The two ends of the lead screw have opposite thread directions, and both ends of the lead screw are threaded to sliders. The bottom of the sliders is fixedly connected to the top of the clamping frame. The outer end of the lead screw passes through the guide rail and is connected to the positioning assembly. The clamping frame is fixedly connected to the bottom of the sliders.

[0009] As a preferred technical solution, the side of the clamping frame is L-shaped, and the clamping frame has reserved slots at equal intervals.

[0010] As a preferred technical solution, the positioning component includes a fixed plate and an adjustment knob. The fixed plate is fixedly connected to both ends of the guide rail, and the adjustment knob is fixedly connected to both ends of the lead screw.

[0011] As a preferred technical solution, the upper outer side of the adjustment knob is threaded with a hand-tightening screw, and the end of the hand-tightening screw passes through the adjustment knob.

[0012] As a preferred technical solution, the outer side of the fixed plate is provided with limit holes arranged in a ring at equal intervals, and the end of the hand-tightening screw is inserted into the limit hole through the adjustment knob.

[0013] As a preferred technical solution, the composite layer includes an aramid braided layer disposed on the outer surface of the composite layer, a carbon fiber core fixedly connected to the inner side of the aramid braided layer, a flame retardant layer fixedly connected to the inner side of the carbon fiber core, and a nylon fiber layer fixedly connected to the inner side of the flame retardant layer.

[0014] As a preferred technical solution, reinforcing steel wires are inserted into the interior of the aramid braided layer, carbon fiber core, flame retardant layer and nylon fiber layer.

[0015] In summary, the present invention has the following main advantages:

[0016] First, the aramid braided layer provides high strength and good toughness, capable of withstanding large tensile forces and ensuring safety during lifting. The carbon fiber core further enhances the strength of the lifting sling while maintaining a light weight for easy handling and transport. The flame retardant layer imparts flame-retardant properties to the sling, reducing the risk of fire in environments where it may come into contact with ignition sources. The nylon fiber layer increases the sling's abrasion resistance and flexibility, allowing it to adapt to the lifting of objects of different shapes and reducing damage to the surface of the object being lifted. The reinforcing steel wires enhance the tensile strength of the sling, preventing excessive stretching and deformation under heavy loads. This composite structure of the lifting sling combines the advantages of multiple materials, possessing high strength, high toughness, flame retardancy, and abrasion resistance, and can play a stable and reliable role in various complex lifting scenarios, providing a safe and efficient solution for heavy lifting in industries such as construction and logistics.

[0017] Secondly, by setting up positioning and adjustment components, this device allows for adjustment of the lead screw during use by turning the adjustment knob. The two ends of the lead screw have opposite threads, which synchronously drive the slider to slide back and forth within the guide rail. Adjusting the slider's movement helps to synchronously move the two clamping frames relative to each other, thus assisting in clamping and positioning the product to be lifted. After clamping and positioning, the hand-tightening screw can be inserted into the corresponding limiting hole by turning the through-adjustment knob. The end of the hand-tightening screw and the limiting hole mutually limit and engage, thus fixing the entire lead screw and slider. This helps to fix the clamping frames, allowing them to move flexibly and easily clamp and install the goods to be lifted, improving the overall ease of use of this device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a bottom view structural diagram of this utility model;

[0020] Figure 3 This is the utility model Figure 2 A magnified structural diagram at point A;

[0021] Figure 4 This is a schematic diagram of the composite layer structure of this utility model.

[0022] Reference numerals: 1. Composite lifting sling; 2. Composite layer; 21. Aramid braided layer; 22. Carbon fiber core; 23. Flame retardant layer; 24. Nylon fiber layer; 25. Reinforcing steel wire; 3. Guide rail; 4. Clamping frame; 5. Positioning assembly; 51. Adjusting knob; 52. Hand-tightening screw; 53. Limiting hole; 6. Adjusting assembly; 61. Lead screw; 62. Sliding block; 63. Reserved slot; 7. Fixing plate. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 4 This embodiment of a high-toughness circular lifting sling includes a composite lifting sling 1, which is composed of a composite layer 2. A guide rail 3 is fixedly connected to the bottom of the composite lifting sling 1. An adjustment component 6 is movably connected inside the guide rail 3. Positioning components 5 are installed through the guide rail 3 at both ends of the adjustment component 6. Clamping frames 4 are fixedly connected to both sides of the bottom of the adjustment component 6.

[0025] The adjusting assembly 6 includes a lead screw 61, which is rotatably connected to the inside of the guide rail 3. The two ends of the lead screw 61 have opposite thread directions, and both ends of the lead screw 61 are threadedly connected to sliders 62. The bottom of the sliders 62 is fixedly connected to the top of the clamping frame 4. The outer end of the lead screw 61 passes through the guide rail 3 and is connected to the positioning assembly 5. The clamping frame 4 is fixedly connected to the bottom of the sliders 62. It is constructed by setting a composite layer 2, which has high strength, high toughness, flame retardancy, wear resistance and other properties. It can play a stable and reliable role in various complex hoisting scenarios, and provide a safe and efficient solution for heavy object hoisting in industries such as construction and logistics. The bottom guide rail 3 and the adjusting assembly 6 are well matched. The lead screw 61 in the adjusting assembly 6 rotates flexibly. The design of opposite thread directions at both ends allows the sliders 62 to drive the clamping frame 4 to move relative to each other, which facilitates the quick clamping and positioning of the product to be hoisted. The positioning assembly 5 further enhances the stability. The clamping frame 4 is fixedly connected to the sliders 62, which ensures the reliability and convenience of the entire device during use.

[0026] refer to Figures 1-2 The clamping frame 4 has an L-shaped side profile and is provided with pre-reserved slots 63 at equal intervals. By setting the clamping frame 4 in an L-shape, it is convenient to clamp and position the goods to be lifted. The pre-reserved slots 63 can increase the internal friction of the clamping frame 4 and reduce the overall weight of the clamping frame 4, thereby reducing the cost of the clamping frame 4.

[0027] refer to Figures 1-3The positioning component 5 includes a fixed plate 7 and an adjusting knob 51. The fixed plate 7 is fixedly connected to both ends of the guide rail 3, and the adjusting knob 51 is fixedly connected to both ends of the lead screw 61. A hand-tightening screw 52 is threaded to the upper outer side of the adjusting knob 51, and the end of the hand-tightening screw 52 passes through the adjusting knob 51. Limiting holes 53 are evenly spaced and arranged in a ring on the outer side of the fixed plate 7. The end of the hand-tightening screw 52 passes through the adjusting knob 51 and is inserted into the limiting hole 53. The fixed plate 7 in the positioning component 5 is fixed to both ends of the guide rail 3, providing stable support for the entire structure. The adjusting knob 51 is fixedly connected to both ends of the lead screw 61. The design is convenient to operate. By rotating the adjustment knob 51, the lead screw 61 can be rotated, which in turn drives the slider 62 and the clamping frame 4 to move, thus achieving clamping and positioning of goods of different sizes. The operation is simple and convenient. The hand-tightening screw 52 connected to the upper outer end of the adjustment knob 51 enhances the stability of the positioning. After clamping and positioning, the end of the hand-tightening screw 52 is inserted through the adjustment knob 51 into the limiting holes 53 arranged in a ring at equal intervals on the outer side of the fixed plate 7 to achieve mutual limiting and locking, which can fix the entire lead screw 61 and slider 62, ensuring that the clamping frame 4 firmly clamps the goods, and improving the safety and reliability of the lifting process.

[0028] refer to Figure 4 The composite layer 2 includes an aramid braided layer 21, which is disposed on the outer surface of the composite layer 2. A carbon fiber inner core 22 is fixedly connected to the inner side of the aramid braided layer 21. A flame retardant layer 23 is fixedly connected to the inner side of the carbon fiber inner core 22. A nylon fiber layer 24 is fixedly connected to the inner side of the flame retardant layer 23. Reinforcing steel wires 25 are threaded through the interior of the aramid braided layer 21, the carbon fiber inner core 22, the flame retardant layer 23, and the nylon fiber layer 24. The aramid braided layer 21 on the outer surface of the composite layer 2 provides high strength and good toughness, and can withstand large tensile forces to ensure safety during hoisting. The inner carbon fiber inner core 22 further enhances the hoisting performance. The sling's strength is enhanced, and its light weight facilitates handling and transportation. The flame retardant layer 23 imparts flame retardant properties to the sling, reducing the risk of fire in environments where it may come into contact with ignition sources. The nylon fiber layer 24 increases the sling's abrasion resistance and flexibility, enabling it to adapt to the lifting of objects of different shapes and reducing damage to the surface of the lifted objects. The reinforcing steel wire 25 running through the entire composite layer 2 improves the tensile strength of the sling, preventing excessive stretching and deformation under heavy loads. This composite structure combines the advantages of multiple materials, possessing high strength, high toughness, flame retardancy, and abrasion resistance, enabling it to function stably and reliably in various complex lifting scenarios.

[0029] Operating principle and advantages: The aramid braided layer 21 has high strength and good toughness, can withstand large tensile forces, and ensures safety during the lifting process. The carbon fiber core 22 enhances the strength of the lifting sling and is lightweight, making it easy to operate and handle. The flame retardant layer 23 gives the lifting sling flame-retardant properties, reducing the risk of fire in environments where it may come into contact with fire sources. The nylon fiber layer 24 increases the wear resistance and flexibility of the lifting sling, adapting to the lifting of objects of different shapes and reducing damage to the surface of the object being lifted. The reinforcing steel wire 25 improves the tensile strength of the lifting sling and prevents excessive stretching and deformation under heavy loads. This composite structure lifting sling combines the advantages of multiple materials and has high strength, high toughness, flame retardancy, and wear resistance. It plays a stable and reliable role in various complex lifting scenarios, providing a safe and efficient solution for heavy lifting in industries such as construction and logistics.

[0030] By setting up positioning component 5 and adjustment component 6, during use, the adjustment knob 51 can be turned to adjust the rotation of lead screw 61. The threads at both ends of lead screw 61 turn in opposite directions, which can synchronously drive slider 62 to slide back and forth inside guide rail 3. Adjusting slider 62 can assist in synchronously driving the two clamping frames 4 to move relative to each other, clamping and positioning the product to be lifted. After clamping and positioning, turn hand-tightening screw 52 through adjustment knob 51 and insert it into the corresponding position limiting hole 53. The end of hand-tightening screw 52 is mutually limited and locked with limiting hole 53, fixing lead screw 61 and slider 62, and assisting in fixing clamping frame 4, so that clamping frame 4 can be flexibly adjusted and moved, making it convenient to clamp and install the goods to be lifted, and improving the ease of use of this device.

Claims

1. A high tenacity round sling comprising a composite sling (1) characterised in that: The composite hoisting belt (1) has a composite layer (2), the bottom of the composite hoisting belt (1) is fixedly connected with a guide rail (3), the inside of the guide rail (3) is movably connected with an adjusting assembly (6), the two ends of the adjusting assembly (6) are provided with a positioning assembly (5) penetrating through the guide rail (3), and the bottom of the adjusting assembly (6) is fixedly connected with a clamping frame (4) on both sides. The adjusting assembly (6) comprises a lead screw (61), the lead screw (61) is rotatably connected to the inside of the guide rail (3), the two ends of the lead screw (61) are oppositely threaded, the two ends of the lead screw (61) are both threadedly connected with a sliding block (62), the bottom of the sliding block (62) is fixedly connected with the top of the clamping frame (4), the outer end of the lead screw (61) is connected through the guide rail (3) and the positioning assembly (5), and the clamping frame (4) is fixedly connected to the bottom of the sliding block (62).

2. A high tenacity round sling as defined in claim 1, wherein: The clamping frame (4) is L-shaped in side view, and a reserved notch (63) is formed on the clamping frame (4) at equal intervals.

3. A high tenacity round sling as defined in claim 1, wherein: The positioning assembly (5) comprises a fixed disc (7) and an adjusting knob (51), the fixed disc (7) is fixedly connected to the two ends of the guide rail (3), and the adjusting knob (51) is fixedly connected to the two ends of the lead screw (61).

4. A high tenacity round sling as defined in claim 3, wherein: The outer side of the adjusting knob (51) is threadedly connected with a hand screw rod (52), and the end of the hand screw rod (52) penetrates through the adjusting knob (51).

5. A high tenacity round sling as defined in claim 4, wherein: The outer side of the fixed disc (7) is arranged with a plurality of limiting holes (53) at equal intervals, and the end of the hand screw rod (52) is inserted into the inside of the limiting hole (53).

6. A high tenacity round sling as defined in claim 1, wherein: The composite layer (2) comprises an aramid woven layer (21), the aramid woven layer (21) is arranged on the outer surface of the composite layer (2), the inner side of the aramid woven layer (21) is fixedly connected with a carbon fiber inner core (22), the inner side of the carbon fiber inner core (22) is fixedly connected with a flame retardant layer (23), and the inner side of the flame retardant layer (23) is fixedly connected with a nylon fiber layer (24).

7. A high tenacity round sling as defined in claim 6, wherein: The aramid woven layer (21), the carbon fiber inner core (22), the flame retardant layer (23) and the nylon fiber layer (24) are all provided with a reinforcing steel wire (25).

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