High temperature resistant and wear resistant braided hat rope

Abstract

The utility model relates to cap rope technical field discloses a kind of high-temperature-resistant wear-resistant braided cap rope, including cap rope body, the cap rope body is multilayer composite braided structure, adjusting mechanism for adjusting its effective length is provided on the cap rope body;The multilayer composite braided structure includes the metal core layer being arranged in the center of the cap rope body, the outside of the metal core layer is successively coated with isolation layer, braided reinforcing layer and protective layer, and the outer surface of the protective layer is provided with wear-resistant coating;The metal core layer is by the strand of many flexible metal microfilament twist and form strand.This utility model, isolation layer is arranged in the middle of cap rope body, with its extremely low friction coefficient, effectively reduce the internal friction and wear between metal core layer and braided reinforcing layer in the dynamic use process of cap rope, prevent the fiber damage or metal wire fatigue caused by interlayer friction, more significantly improve the bending fatigue life and overall durability of cap rope.

Description

Technical Field

[0001] This utility model relates to the field of hat cord technology, and in particular to a high-temperature resistant and wear-resistant braided hat cord. Background Technology

[0002] In industrial fields or activities such as metallurgy, welding, casting, fire rescue, petrochemicals, and certain outdoor special operations, workers often face harsh environments such as high temperatures, flying sparks, and pervasive dust. To prevent safety helmets or work caps from accidentally falling off, helmet straps have become an important auxiliary fixing device.

[0003] However, in existing technologies, most of the hat cords commonly found on the market are made of ordinary synthetic fibers (such as polyester and nylon) or cotton yarn. Although hat cords made of these traditional materials can meet the needs of use in general environments, they are prone to melting, shrinking or even burning when faced with the aforementioned special working conditions, i.e., when in contact with high-temperature heat sources or flames, leading to hat cord failure, loss of fixation, and potential safety hazards. Furthermore, for some existing hat cords that improve performance by composite multiple layers of different fibers, their structural design does not fully consider the interaction between layers and lacks effective measures to reduce internal friction and wear. This can easily lead to premature damage of internal fibers or reinforcing filaments due to fatigue during repeated bending or stress, affecting overall durability. Therefore, a high-temperature resistant and wear-resistant woven hat cord is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a high-temperature resistant and wear-resistant braided hat cord, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-temperature resistant and wear-resistant braided hat cord includes a hat cord body, the hat cord body having a multi-layer composite braided structure, and an adjustment mechanism for adjusting its effective length is provided on the hat cord body. The multi-layer composite braided structure includes a metal core layer disposed at the center of the hat cord body, and an isolation layer, a braiding reinforcement layer, and a protective layer are sequentially covered on the outside of the metal core layer. The outer surface of the protective layer is provided with a wear-resistant coating. As a further description of the above technical solution: The metal core layer is a strand of wire formed by twisting together multiple flexible metal microfilaments; As a further description of the above technical solution: The isolation layer is a polytetrafluoroethylene (PTFE) material layer, and the braided reinforcement layer is an aramid fiber or polybenzobisoxazole (PBO) fiber braided layer. As a further description of the above technical solution: The protective layer is a high-density polyester fiber or nylon fiber woven layer, and the wear-resistant coating is a coating containing siloxane or polytetrafluoroethylene. As a further description of the above technical solution: The adjustment mechanism includes a base disposed outside the hat cord body. The base has two parallel and through holes. A locking block is slidably connected inside the base. The locking block has a through hole corresponding to the first through hole. A pressing member is fixedly connected to the top of the locking block. A reset component for providing reset elastic force is provided at the bottom of the locking block. As a further description of the above technical solution: The base is made of high-temperature resistant ceramic or high-temperature resistant polymer, the pressing part is made of heat insulation material, and the diameter of the through hole one and the through hole two are matched with the outer diameter of the hat cord body. As a further description of the above technical solution: The reset assembly includes a spring plate fixedly connected to the bottom end of the card block, and a plurality of reset springs are fixedly connected to the bottom end of the spring plate; As a further description of the above technical solution: The base has a limiting cavity inside, the outer wall of the compression spring plate is slidably connected to the inner wall of the limiting cavity, and the bottom ends of the plurality of reset springs abut against the bottom inner wall of the limiting cavity.

[0006] This utility model has the following beneficial effects: 1. In this utility model, the metal core layer at the center is composed of multiple strands of flexible metal microfilaments, providing basic high tensile strength and excellent high-temperature resistance; the outermost protective layer and wear-resistant coating together form a strong defense against external wear; the middle isolation layer, with its extremely low coefficient of friction, effectively reduces internal friction and wear between the metal core layer and the braided reinforcement layer during the dynamic use of the hat cord, preventing fiber damage or metal wire fatigue caused by interlayer friction, and significantly improving the bending fatigue life and overall durability of the hat cord. This allows the hat cord to maintain high strength and high temperature resistance while possessing comprehensive durability performance far exceeding that of traditional single-layer or simple composite structure hat cords.

[0007] 2. In this utility model, the reset assembly consisting of a compression spring plate and multiple reset springs ensures rapid and uniform force distribution of the locking block, making the adjustment operation smooth and unobstructed. Furthermore, the base of the adjustment mechanism is made of high-temperature resistant ceramic or polymer, ensuring that it will not soften or deform at high temperatures. Meanwhile, the pressing part that the user directly contacts is made of heat-insulating material. This structure effectively blocks the heat that the base may conduct, allowing the user to safely and confidently adjust the length of the cap cord even in high-temperature environments, greatly improving the practicality and safety of the product. Attached Figure Description

[0008] Figure 1 This is a perspective view of a high-temperature resistant and wear-resistant braided hat cord proposed in this utility model; Figure 2 This is a schematic diagram of the base structure of a high-temperature resistant and wear-resistant braided hat cord proposed in this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of a high-temperature and wear-resistant braided hat cord proposed in this utility model.

[0009] Legend: 1. Hat cord body; 2. Base; 3. Locking block; 4. Pressing element; 5. Compression spring plate; 6. Limiting cavity; 7. Return spring; 8. Through hole one; 9. Through hole two; 10. Metal core layer; 11. Isolation layer; 12. Braided reinforcement layer; 13. Protective layer; 14. Wear-resistant coating. Detailed Implementation

[0010] 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.

[0011] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of a high-temperature resistant and wear-resistant braided hat cord, comprising a hat cord body 1, the hat cord body 1 having a multi-layer composite braided structure, and an adjustment mechanism for adjusting its effective length provided on the hat cord body 1. The multi-layer composite braided structure includes a metal core layer 10 disposed at the center of the headband body 1. The metal core layer 10 is composed of strands of flexible metal microfilaments twisted together. This allows the metal core layer 10 to possess the inherent high tensile strength and excellent high-temperature resistance (not easily melted) of metal, while the multi-strand twisting method gives it good flexibility, avoiding the problem of fatigue breakage caused by repeated bending of a single thick metal wire. The outer side of the metal core layer 10 is successively covered with an isolation layer 11 and a braided reinforcing layer 12. The isolation layer 11 is a polytetrafluoroethylene (PTFE) material layer. PTFE has an extremely low static friction coefficient and is disposed as the isolation layer 11 in the metal core layer 1. Between the inner metal core layer 10 and the braided reinforcing layer 12, the direct friction and wear between the two layers can be significantly reduced during dynamic use such as bending and twisting of the cap cord, effectively preventing fiber damage or metal wire fatigue caused by internal friction. The braided reinforcing layer 12 is a braided layer of aramid fiber or polybenzobisoxazole PBO fiber. Aramid or PBO fiber are recognized high-performance fibers with extremely high strength and modulus as well as good heat resistance. As an intermediate load-bearing layer, the braided reinforcing layer 12 not only bears and disperses most of the load from the outside and protects the inner metal core layer 10 from direct impact, but also provides a stable support foundation for the outer protective layer 13. The protective layer 13 is a high-density polyester or nylon fiber woven layer. The outer surface of the protective layer 13 is provided with an abrasion-resistant coating 14. High-density polyester or nylon fiber is relatively low in cost as a protective layer 13, easy to weave and process, and can provide good basic abrasion resistance and tear resistance, serving as the first barrier against external wear. At the same time, its surface is also easy to coat with the subsequent abrasion-resistant coating 14. The abrasion-resistant coating 14 is a coating containing siloxane or polytetrafluoroethylene. Coatings containing siloxane usually have good thermal stability and film-forming properties, and can form a tough protective film on the surface. Coatings containing polytetrafluoroethylene can provide a certain self-lubricating effect, further reducing the coefficient of friction. Both can significantly improve the surface abrasion resistance of the hat cord.

[0012] Reference Figure 2The adjustment mechanism includes a base 2 located outside the hat cord body 1. The base 2 is made of high-temperature resistant ceramic or high-temperature resistant polymer, avoiding the problems of ordinary plastic softening and deforming at high temperatures leading to locking failure, or ordinary metal becoming too hot to touch due to rapid heat conduction. The base 2 has two parallel and through holes 8. A locking block 3 is slidably connected inside the base 2. The locking block 3 has a through hole 9 corresponding to the through hole 8. The diameters of the through holes 8 and 9 match the outer diameter of the hat cord body 1. The channel formed by the through holes 1 allows the hat cord to slide freely when the holes are aligned. When it is misaligned or partially blocked by the locking block 3, it locks in place. The hole diameter is precisely matched with the outer diameter of the hat cord, ensuring the reliability of the locking and the smoothness of the adjustment. The top of the locking block 3 is fixedly connected to a pressing part 4, which is made of heat-insulating material. The pressing part 4 is the part that the user operates directly and can effectively block the heat that the base 2 may conduct, ensuring that the user will not be burned when operating the adjustment mechanism in a high-temperature environment, thus improving the safety of use. The bottom of the locking block 3 is provided with a reset assembly for providing reset force. The reset assembly includes a compression spring plate 5 fixedly connected to the bottom end of the locking block 3. Multiple reset springs 7 are fixedly connected to the bottom end of the compression spring plate 5. The compression spring plate 5 distributes the concentrated load of the locking block 3 to the multiple reset springs 7, which improves the stability and uniformity of the reset force and prevents jamming. The design of multiple reset springs 7 provides sufficient reset force and increases reliability. Even if individual springs fail, the function will not be completely lost. A limiting cavity 6 is opened inside the base 2. The outer wall of the compression spring plate 5 is slidably connected to the inner wall of the limiting cavity 6. The bottom ends of the multiple reset springs 7 abut against the bottom inner wall of the limiting cavity 6. The limiting cavity 6 provides a precise guide path for the reciprocating sliding of the locking block 3 and limits its range of motion to prevent the locking block 3 from dislodging or tilting and jamming. At the same time, the limiting cavity 6 also provides space for the compression spring plate 5 and the reset springs 7 to be installed and operate.

[0013] Working principle: The metal core layer 10 located at the center is made of multiple strands of flexible metal microfilaments twisted together. It forms the skeleton of the hat rope, giving the hat rope body extremely high tensile strength and basic high temperature resistance. It is not easy to melt even when in contact with high temperature heat sources. The isolation layer 11 covering the outside of the metal core layer 10, such as the polytetrafluoroethylene (PTFE) material layer, has an extremely low coefficient of friction. When the hat rope is bent or under stress, it can effectively reduce the direct friction between the metal core layer 10 and the braided reinforcement layer 12, reduce internal wear, and extend service life. The braided reinforcement layer 12 is made of high-strength aramid or PBO fiber, which further improves the overall strength and heat resistance of the hat rope. The outermost protective layer 13 and its surface wear-resistant coating 14 together form the first line of defense against external wear. It can effectively resist friction in daily use as well as scratches from sparks and sharp objects. This allows the hat rope body 1 to maintain sufficient strength and high temperature resistance while also having excellent wear resistance. Through the design of the isolation layer 11, it achieves fatigue resistance and durability performance superior to traditional structures. When the length of the hat strap body 1 needs to be adjusted, the user presses down on the pressing part 4 made of heat-insulating material. The pressing action of the pressing part 4 is transmitted to the locking block 3 fixedly connected to it, overcoming the elastic force of the return spring 7 and driving the locking block 3 to slide in the limiting cavity 6 of the base 2. As the locking block 3 moves, the second through hole 9 on the locking block 3 and the first through hole 8 on the base 2 gradually become coaxial, thereby releasing the locking state of the hat strap body 1. At this time, the hat strap body 1 can slide freely in the through hole to achieve length adjustment. When the desired length is reached, the pressing part 4 is released, and the return spring 7 will quickly release its elastic force, pushing the compression spring plate 5 and the locking block 3 to reset. After the locking block 3 resets, the second through hole 9 and the first through hole 8 are misaligned and the hat strap is relocked, thereby fixing the hat strap body 1 at the new length position. During the entire adjustment process, the base 2, which is made of high-temperature resistant ceramic or polymer, ensures the structural stability and functional reliability of the mechanism in high-temperature environments, while the heat-insulating pressing part 4 effectively prevents heat from being conducted to the user's skin, avoiding the risk of burns.

[0014] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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 high-temperature resistant and wear-resistant braided hat cord, comprising a hat cord body (1), characterized in that: The hat cord body (1) is a multi-layer composite braided structure, and the hat cord body (1) is provided with an adjustment mechanism for adjusting its effective length; The multi-layer composite braided structure includes a metal core layer (10) disposed at the center of the hat cord body (1). The outer side of the metal core layer (10) is sequentially covered with an isolation layer (11), a braided reinforcement layer (12), and a protective layer (13). The outer surface of the protective layer (13) is provided with a wear-resistant coating (14).

2. The high-temperature resistant and wear-resistant braided hat cord according to claim 1, characterized in that: The metal core layer (10) is a strand of wire made of multiple flexible metal microfilaments twisted together.

3. The high-temperature resistant and wear-resistant braided hat cord according to claim 1, characterized in that: The isolation layer (11) is a polytetrafluoroethylene (PTFE) material layer, and the braided reinforcement layer (12) is an aramid fiber or polybenzobisoxazole (PBO) fiber braided layer.

4. The high-temperature resistant and wear-resistant braided hat cord according to claim 1, characterized in that: The protective layer (13) is a high-density polyester fiber or nylon fiber woven layer, and the wear-resistant coating (14) is a coating containing siloxane or polytetrafluoroethylene.

5. The high-temperature resistant and wear-resistant braided hat cord according to claim 1, characterized in that: The adjustment mechanism includes a base (2) disposed outside the cap cord body (1). The base (2) has two parallel and through holes (8). A locking block (3) is slidably connected inside the base (2). A through hole (9) corresponding to the through hole (8) is provided on the locking block (3). A pressing member (4) is fixedly connected to the top of the locking block (3). A reset component for providing reset elastic force is provided at the bottom of the locking block (3).

6. The high-temperature resistant and wear-resistant braided hat cord according to claim 5, characterized in that: The base (2) is made of high-temperature resistant ceramic or high-temperature resistant polymer, the pressing part (4) is made of heat insulation material, and the diameter of the through hole one (8) and the through hole two (9) are matched with the outer diameter of the hat rope body (1).

7. The high-temperature resistant and wear-resistant braided hat cord according to claim 5, characterized in that: The reset assembly includes a spring plate (5) fixedly connected to the bottom end of the card block (3), and a plurality of reset springs (7) are fixedly connected to the bottom end of the spring plate (5).

8. The high-temperature resistant and wear-resistant braided hat cord according to claim 7, characterized in that: The base (2) has a limiting cavity (6) inside. The outer wall of the compression spring plate (5) is slidably connected to the inner wall of the limiting cavity (6). The bottom ends of the multiple reset springs (7) abut against the bottom inner wall of the limiting cavity (6).

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