A heavy-duty flat eye fiber sling

Abstract

The utility model discloses a heavy pound ring eye flattening fiber sling relates to hoisting tool technical field, and specifically includes the flat fiber body of adapting heavy pound hoisting scene, and one end of flat fiber body is provided with the upper ring eye, and the upper ring eye root part is provided with the fixed sleeve, and the outer ring of upper ring eye is wrapped with the protection structure, and the protection structure is detachably connected with the fixed sleeve, the other end of flat fiber body is provided with the lower ring eye, and flat fiber body is connected with the lifting hook through the lower ring eye, the protection structure includes the inner wrapping sleeve of wrapping upper ring eye and the outer wrapping sleeve of wrapping inner wrapping sleeve. The application utilizes the protection structure to realize the isolation and protection to the upper ring eye, reduces the wear and tear of upper ring eye part in hoisting operation, prolongs the service life of the sling, and the staff can directly judge the wear and tear degree of the protection structure according to the color change of the inner side wall of the protection structure, so that the staff can replace the protection structure in time.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting tools, specifically a heavy-duty ring-eye flat synthetic fiber sling. Background Technology

[0002] Heavy-duty ring-eye flat synthetic fiber slings are lifting and hoisting tools made primarily of synthetic fibers. They typically consist of a flat, long, straight sling, a buckle, and a hook. One end of the sling has a buckle with a cable track inside. After the sling passes through the cable track, it is secured by a clamping plate. The serrations on the clamping plate cut into the sling, ensuring a tight connection between the buckle and the sling. An intermediate section is rotatably connected to the buckle, with a hook fixed to one side, facilitating use in various environments. The end of the sling furthest from the hook is fixedly connected end-to-end to form a ring, creating an eye for connection with hooks, slings, and other lifting accessories, enabling stable lifting of goods.

[0003] In practical applications, the eyelet portion serves as the direct connection point between the sling and the lifting accessories. During lifting operations, it must bear the weight of the cargo for extended periods. Additionally, the relative movement between the hook and the eyelet generates friction, leading to wear on the eyelet portion and reducing the sling's service life. Furthermore, due to the inherent physical properties of the material, synthetic fiber slings are prone to sudden breakage when subjected to loads exceeding their limit, with virtually no buffering phase during the breakage process, which can easily cause safety accidents. Based on these considerations, this application proposes a heavy-duty flat synthetic fiber sling with an eyelet. Utility Model Content

[0004] This invention provides a heavy-duty flat synthetic fiber sling with eyelets, which solves the problems mentioned in the background art, such as easy wear of the eyelets in the sling, reducing the service life of the sling; and the tendency of synthetic fiber slings to suddenly break, which can easily lead to safety accidents.

[0005] This utility model provides the following technical solution: a heavy-duty flat fiber sling with an eyelet, comprising a flat fiber sling body adapted to heavy-duty lifting scenarios, one end of the flat fiber sling body being provided with an upper eyelet, a fixing sleeve being provided at the root of the upper eyelet, and a protective structure being wrapped around the outer ring of the upper eyelet, the protective structure being detachably connected to the fixing sleeve; the other end of the flat fiber sling body being provided with a lower eyelet, the flat fiber sling body being connected to a hook through the lower eyelet;

[0006] The protective structure includes an inner sleeve that covers the eyelet and an outer sleeve that covers the inner sleeve. Both the bottom ends of the inner sleeve and the bottom ends of the outer sleeve are provided with limit holes. Both sides of the fixing sleeve are detachably connected with clamping plates. The two clamping plates are detachably connected. The top of the inner side of the clamping plate is provided with a limit rod. The limit rod passes through the limit holes provided at the bottom ends of the inner sleeve and the bottom ends of the outer sleeve.

[0007] Preferably, positioning rods are connected to both sides of the fixing sleeve, and positioning holes are provided at the bottom of the clamping plate, with the positioning holes matching the positioning rods.

[0008] Preferably, both the inner and outer sheaths have C-shaped cross-sections, with the upper eyelet located inside the inner sheath and the inner sheath located inside the outer sheath, and the outer sheath sealing the opening of the inner sheath.

[0009] Preferably, a detection rod is provided at the top of the lifting hole of the hook, the bottom of the detection rod contacts the inner wall of the lower ring eye, a deformation sensor is provided at the top of the lifting hole of the hook, and an alarm is provided in the non-stressed area of ​​the hook.

[0010] Preferably, the breaking load of the detection rod is lower than that of the flattened fiber cable.

[0011] Preferably, the inner wall color of the outer sheath is different from the inner wall color of the inner sheath.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This heavy-duty flat synthetic fiber sling with eyelet uses a protective structure to isolate and protect the upper eyelet, reducing wear on the upper eyelet during hoisting operations and extending the sling's service life. Furthermore, workers can visually judge the wear level of the protective structure by observing the color change of the inner wall of the protective structure, allowing for timely replacement of the protective structure.

[0014] 2. This heavy-duty ring-eye flat synthetic fiber sling has an overload warning function. Based on the deformation of the detection rod, it can indirectly reflect the tension on the sling and provide timely warning when the sling is overloaded. This effectively reduces the probability of sudden breakage of the sling due to exceeding the tension limit, and significantly improves the safety of the sling during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a heavy-duty ring-eye flat synthetic fiber sling proposed in this utility model;

[0016] Figure 2 This is an enlarged schematic diagram of the hook structure of this utility model;

[0017] Figure 3 This is a schematic diagram showing the connection between the eyelet and the protective structure in this utility model.

[0018] Figure 4 The structure of this utility model Figure 3 Explosion diagram;

[0019] Figure 5 The structure of this utility model Figure 4 Diagram of the back of the inner and outer packaging;

[0020] Figure 6 This is a cross-sectional schematic diagram of the structural protection structure of this utility model.

[0021] In the diagram: 1. Flat synthetic fiber cable; 2. Upper eyelet; 3. Lower eyelet; 4. Hook; 5. Outer sheath; 6. Fixing sleeve; 7. Clamping plate; 8. Detection rod; 9. Deformation sensor; 10. Alarm; 11. Limiting rod; 12. Inner sheath; 13. Limiting hole; 14. Positioning hole; 15. Positioning rod. Detailed Implementation

[0022] 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.

[0023] This utility model provides an embodiment: Please refer to Figures 1-6 A heavy-duty flat fiber sling with an eyelet includes a flat fiber sling body 1. The flat fiber sling body 1 is adapted to heavy-duty lifting scenarios. The structure of the flat fiber sling body 1 is consistent with that of conventional flat fiber sling bodies adapted to heavy-duty requirements, which is existing technology and will not be described in detail here. One end of the flat fiber sling body 1 is provided with an upper eyelet 2. A fixing sleeve 6 is provided at the root of the upper eyelet 2. A protective structure is wrapped around the outer ring of the upper eyelet 2. The protective structure and the fixing sleeve 6 are detachably connected.

[0024] The protective structure includes an inner sleeve 12 with an upper eyelet 2 and an outer sleeve 5 that wraps around the inner sleeve 12. Both the inner sleeve 12 and the outer sleeve 5 have C-shaped cross-sections. The upper eyelet 2 is located inside the inner sleeve 12, and the inner sleeve 12 is located inside the outer sleeve 5. The outer sleeve 5 seals the opening of the inner sleeve 12. The outer sleeve 5 and the inner sleeve 12 are detachably connected. In embodiment 1, the outer sleeve 5 and the inner sleeve 12 are detachably connected by Velcro. The Velcro includes a Velcro tab and a Velcro nut. The outer wall of the inner sleeve 12 is provided with a Velcro tab, and the Velcro nut that matches the Velcro tab is provided on the inner wall of the outer wall of the outer sleeve 5. Furthermore, the outer wall of the outer sleeve 5 is made of a flexible material, which can be folded and bent, facilitating the separation or connection of the outer sleeve 5 and the inner sleeve 12 when the protective structure is assembled or disassembled.

[0025] The protective structure also includes a clamping plate 7, which is detachably connected to both the inner sleeve 12 and the outer sleeve 5. The bottom ends of both the inner sleeve 12 and the outer sleeve 5 are provided with limiting holes 13. The top end of the inner side of the clamping plate 7 is connected to a limiting rod 11. When the inner sleeve 12 and the outer sleeve 5 are connected, the limiting rod 11 can pass through the limiting holes 13 provided at the bottom ends of both the inner sleeve 12 and the outer sleeve 5. The clamping plate 7 is used to position the inner sleeve 12 and the outer sleeve 5, preventing the protective structure from moving during use, ensuring the stable buffering and protection effect of the protective structure, and not interfering with the sling.

[0026] Positioning rods 15 are connected to both sides of the fixing sleeve 6. A positioning hole 14 is provided at the bottom of the clamping plate 7. The positioning hole 14 is adapted to the positioning rods 15. Through the positioning hole 14, the clamping plate 7 and the fixing sleeve 6 can be connected. The two clamping plates 7 are detachably connected. When the two clamping plates 7 are connected, they clamp and fix the fixing sleeve 6, the inner wrapping sleeve 12, and the outer wrapping sleeve 5, thereby achieving reliable fixation of the protective structure and the sling. In embodiment 2, the two clamping plates 7 are connected by bolts.

[0027] As described above, this application utilizes a protective structure to isolate the upper eyelet 2 from components such as the hook of the lifting equipment. This absorbs the load, reduces wear on the upper eyelet 2, disperses contact pressure, alleviates stress concentration, and extends the service life of the sling. Furthermore, the protective structure and the sling can be quickly assembled and disassembled, facilitating the replacement of the protective structure.

[0028] The materials of the inner sleeve 12 and the outer sleeve 5 can be set according to requirements, and there are no restrictions here.

[0029] In addition, the inner wall color of the outer sleeve 5 is different from that of the inner sleeve 12. When using this application, the user can intuitively judge the wear degree of the protective structure based on the color so as to replace the protective structure in a timely manner.

[0030] The other end of the flat fiber cable 1 is provided with a lower eyelet 3. The flat fiber cable 1 is connected to the hook 4 through the lower eyelet 3. The edge of the hook 4 is rounded to reduce the friction between the hook 4 and the lower eyelet 3 and reduce the wear of the lower eyelet 3. A detection rod 8 is provided at the top of the lifting hole of the hook 4. The bottom of the detection rod 8 contacts the inner wall of the lower eyelet 3. In use, the tension on the cable is the same as the compressive force of the lower eyelet on the detection rod 8. A deformation sensor 9 is provided at the top of the lifting hole of the hook 4, and an alarm 10 is provided in the non-stressed area of ​​the hook 4. The breaking load of the detection rod 8 is lower than the breaking load of the flat fiber cable 1. In use, the flattened fiber cable 1 applies force to the detection rod 8. Since the breaking load of the detection rod 8 is less than that of the flattened fiber cable 1, when the tension on the sling exceeds the breaking load of the detection rod 8, the detection rod 8 will deform or break. The deformation sensor 9 can detect the change in the state of the detection rod 8 and upload the collected data to a controller fixed at a suitable location. The controller can determine whether the deformation of the detection rod 8 reaches the level that requires an alarm based on a preset threshold and the data collected by the deformation sensor 9. When an alarm is required, the controller activates the alarm 10 to sound an alarm, reducing the probability of sudden breakage of the sling due to excessive tension and improving the safety of the sling. The material and breaking load of the detection rod 8 can be set according to requirements and are not limited here. The models of both the deformation sensor 9 and the alarm 10 can be set according to requirements and are not limited here.

[0031] In practical use, the deformation sensor 9 and alarm 10 on the hook 4 can be powered by wired power supply. Specifically, the power supply fixed in a suitable position is transmitted to the deformation sensor 9 and alarm 10 on the hook through a wear-resistant and tensile-resistant wire, thereby powering the deformation sensor 9 and alarm 10.

[0032] All electrical components involved in this application are existing technologies. Those skilled in the art can select appropriate models of electrical components according to their needs. No restrictions or elaborations are made here. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies are connected by wires. According to the actual situation, appropriate controllers are selected to meet control requirements. For specific connections and control sequences, please refer to the description below. The electrical connections between each electrical component are completed in the order of their operation. The detailed connection methods are well-known technologies in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0033] In summary: When using this heavy-duty flat fiber sling with eyelet, the protective structure directly contacts the hook and other components of the lifting equipment, isolating the upper eyelet 2 from the hook and other components of the lifting equipment, reducing wear on the upper eyelet 2, and the protective structure can absorb the load, disperse the contact pressure, alleviate stress concentration, and extend the service life of the sling.

[0034] Workers can judge the wear level of the protective structure based on its color. When the inner wall of the outer sleeve 5 is severely worn, workers can visually see the color of the inner wall of the inner sleeve 12, allowing them to determine when to replace the protective structure. When the protective structure needs to be replaced, workers disconnect the connection between the two clamping plates 7, remove the clamping plates 7, and disconnect the connection between the inner sleeve 12, the outer sleeve 5, and the fixing sleeve 6. Workers then remove the outer sleeve 5 and the inner sleeve 12 to remove the severely worn protective structure. Workers use the new inner sleeve 12 to wrap the eyelet 2, and the new outer sleeve 5 to wrap the inner sleeve 12. After using the clamping plates 7 to connect the inner sleeve 12, the outer sleeve 5, and the fixing sleeve 6, the replacement of the protective structure is completed.

[0035] When this application is used, the deformation sensor 9 is used to detect the state of the detection rod 8 in real time and upload the detection data to the controller. The controller determines whether the deformation of the detection rod 8 reaches the level that requires an alarm based on the preset threshold and the data collected by the deformation sensor 9. When an alarm is required, the controller controls the alarm 10 to sound an alarm, thereby reducing the probability of the sling breaking suddenly due to the tension exceeding the limit and improving the safety of the sling.

[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional technical means such as bolt connection in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. The materials and specifications of each component can be selected according to the requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty ring-eye flat synthetic fiber sling, comprising a flat synthetic fiber sling body (1) adapted for heavy-duty lifting scenarios, characterized in that: One end of the flat chemical fiber cable (1) is provided with an upper eyelet (2), and a fixing sleeve (6) is provided at the root of the upper eyelet (2). The outer ring of the upper eyelet (2) is wrapped with a protective structure, and the protective structure is detachably connected to the fixing sleeve (6). The other end of the flat chemical fiber cable (1) is provided with a lower eyelet (3), and the flat chemical fiber cable (1) is connected to the hook (4) through the lower eyelet (3). The protective structure includes an inner sleeve (12) that wraps around the upper eyelet (2) and an outer sleeve (5) that wraps around the inner sleeve (12). The bottom end of the inner sleeve (12) and the bottom end of the outer sleeve (5) are provided with limit insertion holes (13). Both sides of the fixing sleeve (6) are detachably connected with clamping plates (7). The two clamping plates (7) are detachably connected. The top of the inner side of the clamping plate (7) is provided with a limit insertion rod (11). The limit insertion rod (11) passes through the limit insertion holes (13) provided at the bottom end of the inner sleeve (12) and the bottom end of the outer sleeve (5).

2. The heavy-duty ring-eye flat synthetic fiber sling according to claim 1, characterized in that: The fixing sleeve (6) is connected to positioning rods (15) on both sides, and the bottom end of the clamping plate (7) is provided with positioning holes (14), which are adapted to the positioning rods (15).

3. The heavy-duty ring-eye flat synthetic fiber sling according to claim 1, characterized in that: Both the inner sleeve (12) and the outer sleeve (5) have C-shaped cross sections. The upper eyelet (2) is located in the inner cavity of the inner sleeve (12), and the inner sleeve (12) is located in the inner cavity of the outer sleeve (5). The outer sleeve (5) seals the opening of the inner sleeve (12).

4. The heavy-duty ring-eye flat synthetic fiber sling according to claim 1, characterized in that: A detection rod (8) is provided at the top of the lifting hole of the hook (4), the bottom of the detection rod (8) is in contact with the inner wall of the lower ring eye (3), a deformation sensor (9) is provided at the top of the lifting hole of the hook (4), and an alarm (10) is provided in the non-stressed area of ​​the hook (4).

5. A heavy-duty ring-eye flat synthetic fiber sling according to claim 4, characterized in that: The fracture load of the detection rod (8) is lower than the fracture load of the flattened fiber body (1).

6. The heavy-duty ring-eye flat synthetic fiber sling according to claim 1, characterized in that: The inner wall color of the outer sheath (5) is different from the inner wall color of the inner sheath (12).

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