High-temperature-resistant fireproof cable

Abstract

The utility model relates to the technical field of fireproof cables, and discloses a high-temperature-resistant fireproof cable, which comprises a cable body, a cable core is sleeved in the cable body, and an anti-wear support assembly is sleeved on the outer surface of the cable body. The cable body is composed of a fireproof layer, a high-temperature-resistant layer and a wear-resistant layer. The cable core, the fireproof layer, the high-temperature-resistant layer, the wear-resistant layer and the wear-resistant supporting assembly are sequentially connected in a sleeved mode. The anti-abrasion supporting assembly is composed of a first clamping ring and a second clamping ring which are connected in a clamped mode, and clamping grooves are formed in one end of the first clamping ring and one end of the second clamping ring. According to the utility model, due to the arrangement of the wear-resistant supporting assembly, under the cooperation of the clamping groove and the clamping head, the rapid wear of the wear-resistant layer on the outer layer of the cable body is avoided through the first clamping ring and the second clamping ring, so that the high-temperature-resistant and fireproof layer can provide a good protection effect for a long time, and meanwhile, the cable body is well supported; and the overall damage of the cable body caused by extrusion is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fireproof cable technology, and more specifically, to a high-temperature fireproof cable. Background Technology

[0002] Modern office buildings, hotels, restaurants, train stations and other important public places are becoming increasingly luxurious in their decoration and are using more and more flammable materials. These important public places require that, in the event of a fire, the electrical wiring can continuously transmit power, various control signals and alarm signals to provide valuable time for people to escape, for automatic alarms, for the activation of fire-fighting facilities, for rescue and the use of emergency equipment.

[0003] Most existing fire-resistant cables have an external protective layer to reduce the impact of external high temperatures and fires on the internal transmission structure. With the development of cable technology, high-temperature resistant and fire-resistant material layers can mostly achieve the expected protective effect. However, an unavoidable problem is that during the cable laying and use, there will be wear and compression along the cable. This will cause damage to the high-temperature resistant and fire-resistant outer layer of the cable, resulting in a significant reduction or even loss of the cable's transmission stability, high-temperature resistance, and fire resistance. Therefore, it is necessary to develop a new type of high-temperature resistant fire-resistant cable to solve the shortcomings of the existing technology. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a high-temperature resistant fireproof cable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature fireproof cable, comprising a cable body, wherein a cable core is sleeved inside the cable body, and an anti-wear support assembly is sleeved on the outer surface of the cable body; the cable body is composed of a fireproof layer, a high-temperature resistant layer and an anti-wear layer, wherein the cable core, the fireproof layer, the high-temperature resistant layer, the anti-wear layer and the anti-wear support assembly are sleeved sequentially.

[0006] The wear-resistant support assembly consists of a first retaining ring and a second retaining ring that are interlocked with each other. One end of the first retaining ring and the second retaining ring is provided with a retaining groove, and the other end of the first retaining ring and the second retaining ring are provided with two symmetrical upper and lower retaining heads. The retaining head at one end of the first retaining ring is engaged in the retaining groove at one end of the second retaining ring, and the retaining head at the other end of the second retaining ring is engaged in the retaining groove at the other end of the first retaining ring.

[0007] As a preferred embodiment of this utility model, the wear-resistant support component is snapped onto the wear-resistant layer of the cable body layer, and an installation groove is provided on the outer surface of the wear-resistant layer, and the wear-resistant support component is installed in the installation groove on the surface of the wear-resistant layer.

[0008] As a preferred embodiment of this utility model, the inner walls of the first retaining ring and the second retaining ring are fitted onto the inner wall of the mounting groove, and the outer diameter of the first retaining ring and the second retaining ring is larger than the outer diameter of the outer wear-resistant layer of the cable body.

[0009] As a preferred technical solution of this utility model, the outer surfaces of the first retaining ring and the second retaining ring are both smooth, and a guide sliding surface is provided on the side of the facing surfaces of the first retaining ring and the second retaining ring near the center line of the cable body. When the first retaining ring and the second retaining ring are engaged with each other, they are accurately fitted into the mounting groove through the guide sliding surface.

[0010] As a preferred embodiment of this utility model, the snap-fit ​​groove comprises a snap-fit ​​main groove, a snap-fit ​​guide groove, and a continuous snap-fit ​​guide groove. The snap-fit ​​main groove is formed on the facing surfaces of one end of the first snap ring and the second snap ring. The snap-fit ​​guide groove is formed on the upper and lower sides of the outer end of the snap-fit ​​main groove inside the first snap ring and the second snap ring. The continuous snap-fit ​​guide groove is formed on the upper and lower sides of the inner end of the snap-fit ​​main groove inside the first snap ring and the second snap ring. The snap-fit ​​guide groove and the continuous snap-fit ​​guide groove are both interconnected with the snap-fit ​​main groove. The adjacent ends of the snap-fit ​​guide groove and the continuous snap-fit ​​guide groove are connected to each other. The inner walls of the snap-fit ​​guide groove and the continuous snap-fit ​​guide groove are both smooth inclined surfaces.

[0011] As a preferred embodiment of this utility model, the snap-fit ​​connector comprises a snap-fit ​​main block, a snap-fit ​​guide slide surface, and a continuous clamping slide surface. One end of the snap-fit ​​main block is fixedly connected to the corresponding first snap ring and second snap ring, and the other end of the snap-fit ​​main block extends into the snap-fit ​​main groove on the second snap ring and the first snap ring. The snap-fit ​​guide slide surface and the continuous clamping slide surface are integrally formed on opposite sides of the outer surfaces of the two snap-fit ​​main blocks. The snap-fit ​​guide slide surface and the continuous clamping slide surface are smoothly connected. The outer surfaces of the snap-fit ​​guide slide surface and the continuous clamping slide surface are both smooth inclined surfaces. The inclined surfaces of the snap-fit ​​guide slide surface and the continuous clamping slide surface are respectively adapted to the inclined surfaces of the snap-fit ​​guide groove and the inner cavity of the continuous clamping guide groove.

[0012] As a preferred technical solution of this utility model, the back sides of the two snap-fit ​​guide sliding surfaces are respectively attached to the upper and lower snap-fit ​​guide slots at the outer end of the snap-fit ​​main groove, and the back sides of the two continuous snap-fit ​​sliding surfaces are respectively attached to the upper and lower continuous snap-fit ​​guide slots at the inner end of the snap-fit ​​main groove. The length of the snap-fit ​​connector is smaller than the length of the snap-fit ​​groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Due to the design of the wear-resistant support component, the first and second retaining rings can be easily and quickly processed and installed onto the cable body through the cooperation of the retaining groove and the retaining connector. This prevents the rapid wear of the outer wear-resistant layer of the cable body. Furthermore, the first and second retaining rings can provide overall support for the cable body through the cooperation of the retaining groove and the retaining connector, preventing the overall damage of the cable body caused by compression.

[0015] 2. Due to the continuous clamping guide groove, under the action of the inclined surface of the continuous clamping sliding surface, when the clamping guide sliding surface passes over the clamping guide groove opening and enters the inner side of the continuous clamping guide groove, the clamping head can slide further into the interior of the clamping groove along the inner wall of the continuous clamping guide groove, thereby ensuring the firmness of the connection between the first clamping ring and the second clamping ring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the wear-resistant support assembly of this utility model;

[0018] Figure 3 This is a schematic diagram showing the disassembly of the first and second retaining rings of this utility model;

[0019] Figure 4 This is a front view of the cross-section of the wear-resistant support component of this utility model;

[0020] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle;

[0021] Figure 6 This is a cross-sectional schematic diagram of the card connector in this utility model;

[0022] Figure 7 This is a cross-sectional schematic diagram of the snap-fit ​​groove of this utility model.

[0023] In the diagram: 1. Cable body; 2. Cable core; 3. Wear-resistant support assembly; 31. First retaining ring; 32. Second retaining ring; 33. Snap-fit ​​groove; 331. Snap-fit ​​main groove; 332. Snap-fit ​​guide groove; 333. Continuously clamping guide groove; 34. Snap-fit ​​connector; 341. Snap-fit ​​main block; 342. Snap-fit ​​guide slide; 343. Continuously clamping slide; 35. Guide slide. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 7 As shown, this utility model provides a high-temperature fireproof cable, including a cable body 1, a cable core 2 is sleeved inside the cable body 1, and an anti-wear support component 3 is sleeved on the outer surface of the cable body 1; the cable body 1 is composed of a fireproof layer, a high-temperature resistant layer and an anti-wear layer, and the cable core 2, the fireproof layer, the high-temperature resistant layer, the anti-wear layer and the anti-wear support component 3 are sleeved in sequence.

[0026] The wear-resistant support assembly 3 consists of a first retaining ring 31 and a second retaining ring 32 that are interlocked. One end of each retaining ring 31 and 32 has a retaining groove 33, and the other end of each retaining ring 31 and 32 has two symmetrical upper and lower retaining heads 34. The retaining head 34 at one end of the first retaining ring 31 engages with the retaining groove 33 at one end of the second retaining ring 32, and the retaining head 34 at the other end of the second retaining ring 32 engages with the retaining groove 33 at the other end of the first retaining ring 31. Due to the design of the wear-resistant support assembly 3, the first retaining ring 31 and 32 can be easily and quickly processed and installed onto the cable body 1 through the cooperation of the retaining groove 33 and the retaining head 34. This prevents rapid wear of the outer wear-resistant layer of the cable body 1. Furthermore, the cooperation of the retaining groove 33 and the retaining head 34 provides overall support to the cable body 1, preventing damage caused by compression.

[0027] Among them, the wear-resistant support component 3 is snapped onto the wear-resistant layer of the cable body 1. The outer surface of the wear-resistant layer is provided with an installation groove, and the wear-resistant support component 3 is installed in the installation groove on the surface of the wear-resistant layer.

[0028] The inner walls of the first retaining ring 31 and the second retaining ring 32 are fitted onto the inner wall of the mounting groove. The outer diameter of the first retaining ring 31 and the second retaining ring 32 is larger than the outer diameter of the outer wear-resistant layer of the cable body 1. Since the outer surfaces of the first retaining ring 31 and the second retaining ring 32 installed in the mounting groove protrude to the outside of the cable body 1, the wear of the outer wear-resistant layer can be effectively avoided when the cable moves.

[0029] The outer surfaces of the first retaining ring 31 and the second retaining ring 32 are both smooth. A guide sliding surface 35 is provided on the side of the facing surfaces of the first retaining ring 31 and the second retaining ring 32 near the centerline of the cable body 1. When the first retaining ring 31 and the second retaining ring 32 are engaged, they are accurately fitted into the mounting groove through the guide sliding surface 35. Due to the setting of the guide sliding surface 35, the cooperation between its smooth inclined surface and the inner wall of the mounting groove ensures that when the first retaining ring 31 and the second retaining ring 32 are engaged, their two ends can slide into the upper and lower sides of the mounting groove respectively, thereby ensuring that the two ends of the first retaining ring 31 and the second retaining ring 32 can be accurately connected. Then, with the cooperation of the locking groove 33 and the locking connector 34, the first retaining ring 31 and the second retaining ring 32 are connected to each other.

[0030] The snap-fit ​​groove 33 consists of a snap-fit ​​main groove 331, a snap-fit ​​guide groove 332, and a continuous snap-fit ​​guide groove 333. The snap-fit ​​main groove 331 is opened on the facing surfaces of one end of the first snap ring 31 and the second snap ring 32. The snap-fit ​​guide groove 332 is opened on the upper and lower sides of the outer end of the snap-fit ​​main groove 331 inside the first snap ring 31 and the second snap ring 32. The continuous snap-fit ​​guide groove 333 is opened on the upper and lower sides of the inner end of the snap-fit ​​main groove 331 inside the first snap ring 31 and the second snap ring 32. The snap-fit ​​guide groove 332 and the continuous snap-fit ​​guide groove 333 are both connected to the snap-fit ​​main groove 331. The near ends of the snap-fit ​​guide groove 332 and the continuous snap-fit ​​guide groove 333 are connected to each other. The inner walls of the snap-fit ​​guide groove 332 and the continuous snap-fit ​​guide groove 333 are both smooth inclined surfaces.

[0031] The snap-fit ​​connector 34 comprises a snap-fit ​​main block 341, a snap-fit ​​guide slide surface 342, and a continuous clamping slide surface 343. One end of the snap-fit ​​main block 341 is fixedly connected to the corresponding first snap ring 31 and second snap ring 32, and the other end of the snap-fit ​​main block 341 extends into the snap-fit ​​main groove 331 on the second snap ring 32 and the first snap ring 31. The snap-fit ​​guide slide surface 342 and the continuous clamping slide surface 343 are integrally formed on opposite sides of the outer surfaces of the two snap-fit ​​main blocks 341. The snap-fit ​​guide slide surface 342 and the continuous clamping slide surface 343 are smoothly connected. The outer surfaces of the guide slide 342 and the continuous clamping slide 343 are both smooth inclined surfaces. The inclined surfaces of the guide slide 342 and the continuous clamping slide 343 are respectively adapted to the inclined surfaces of the guide slot 332 and the inner cavity of the continuous clamping guide slot 333. Due to the setting of the guide slot 332, with the cooperation of the inclined surfaces of the guide slide 342, the locking heads 34 of the first locking ring 31 and the second locking ring 32 facing each other can be accurately locked into the locking groove 33, thereby completing the fastening connection of the first locking ring 31 and the second locking ring 32.

[0032] The two locking guide surfaces 342 have their opposite sides attached to the upper and lower locking guide slots 332 at the outer end of the locking main groove 331, respectively. The two continuous locking surfaces 343 have their opposite sides attached to the upper and lower continuous locking guide slots 333 at the inner end of the locking main groove 331, respectively. The length of the locking head 34 is smaller than the length of the locking groove 33. Due to the continuous locking guide slot 333, when the locking guide surface 342 passes through the locking guide slot 332 and enters the inner side of the continuous locking guide slot 333, the locking head 34 can slide further into the interior of the locking groove 33 along the inner wall of the continuous locking guide slot 333 under the action of the inclined surface of the continuous locking surface 343, thereby ensuring the firmness of the engagement between the first locking ring 31 and the second locking ring 32.

[0033] Working principle and usage process of this utility model:

[0034] The first retaining ring 31 and the second retaining ring 32 are fastened together, and the retaining groove 33 at one end of the first retaining ring 31 is aligned with the retaining connector 34 at one end of the second retaining ring 32, while the retaining connector 34 at the other end of the first retaining ring 31 is aligned with the retaining groove 33 at the other end of the second retaining ring 32. With the cooperation of the guide sliding surface 35, both ends of the first retaining ring 31 and the second retaining ring 32 can slide along the mounting groove to the upper and lower sides, thereby ensuring that both ends of the first retaining ring 31 and the second retaining ring 32 can be connected to each other through the corresponding retaining groove 33 and retaining connector 34.

[0035] During this process, with the cooperation of the snap-fit ​​guide slot 332 and the snap-fit ​​guide slide 342, it is ensured that the two snap-fit ​​connectors 34 can be squeezed and deformed and can be accurately inserted into the snap-fit ​​groove 33. Then, under the elastic restoring force of the snap-fit ​​main block 341, the two snap-fit ​​main blocks 341 are reset and move away from each other. Then, with the cooperation of the continuous snap-fit ​​guide slot 333 and the continuous snap-fit ​​slide 343, the snap-fit ​​connectors 34 are further snapped into the snap-fit ​​groove 33, so that the two ends of the first snap-fit ​​ring 31 and the second snap-fit ​​ring 32 can be firmly fastened together.

[0036] When the cable body 1 is moved, it can avoid contact with the moving surface, thereby preventing wear of the wear-resistant layer and ensuring that the high-temperature resistant and fireproof layer can continuously provide good protection for the inner cable core 2. When it is squeezed, the first retaining ring 31 and the second retaining ring 32 provide better support for the cable body 1 in cooperation with the retaining groove 33 and the retaining connector 34, thereby avoiding squeezing damage or even the overall breakage of the cable body 1.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[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-temperature fire-resistant cable, comprising a cable body (1), characterized in that: The cable body (1) is fitted with a cable core (2) inside, and an anti-wear support assembly (3) is fitted on the outer surface of the cable body (1); the cable body (1) is composed of a fireproof layer, a high temperature resistant layer and an anti-wear layer, and the cable core (2), fireproof layer, high temperature resistant layer, anti-wear layer and anti-wear support assembly (3) are fitted in sequence. The wear-resistant support assembly (3) consists of a first retaining ring (31) and a second retaining ring (32) that are interlocked with each other. One end of the first retaining ring (31) and the second retaining ring (32) is provided with a retaining groove (33). The other end of the first retaining ring (31) and the second retaining ring (32) is provided with two symmetrical upper and lower retaining heads (34). The retaining head (34) at one end of the first retaining ring (31) is engaged in the retaining groove (33) at one end of the second retaining ring (32), and the retaining head (34) at the other end of the second retaining ring (32) is engaged in the retaining groove (33) at the other end of the first retaining ring (31).

2. The high-temperature fire-resistant cable according to claim 1, characterized in that: The wear-resistant support component (3) is snapped onto the wear-resistant layer of the cable body (1). An installation groove is provided on the outer surface of the wear-resistant layer, and the wear-resistant support component (3) is installed in the installation groove on the surface of the wear-resistant layer.

3. The high-temperature fire-resistant cable according to claim 2, characterized in that: The inner walls of the first retaining ring (31) and the second retaining ring (32) are fitted onto the inner wall of the mounting groove. The outer diameter of the first retaining ring (31) and the second retaining ring (32) is larger than the outer diameter of the outer wear-resistant layer of the cable body (1).

4. The high-temperature fire-resistant cable according to claim 3, characterized in that: The outer surfaces of the first retaining ring (31) and the second retaining ring (32) are both smooth. A guide surface (35) is provided on the side of the first retaining ring (31) and the second retaining ring (32) facing each other near the center line of the cable body (1). When the first retaining ring (31) and the second retaining ring (32) are engaged with each other, they are accurately fitted into the mounting groove through the guide surface (35).

5. A high-temperature fire-resistant cable according to claim 1, characterized in that: The snap-fit ​​groove (33) consists of a snap-fit ​​main groove (331), a snap-fit ​​guide groove (332), and a continuous clamping guide groove (333). The snap-fit ​​main groove (331) is formed on the facing surfaces of one end of the first snap ring (31) and the second snap ring (32). The snap-fit ​​guide groove (332) is formed on the upper and lower sides of the outer end of the snap-fit ​​main groove (331) inside the first snap ring (31) and the second snap ring (32). The continuous clamping guide groove (333) is formed on the upper and lower sides of the outer end of the snap-fit ​​main groove (331) inside the first snap ring (31) and the second snap ring (32). The first retaining ring (31) and the second retaining ring (32) engage with the upper and lower continuous clamping guide grooves (333) at the inner end of the main groove (331). The engaging guide groove (332) and the continuous clamping guide groove (333) are both connected to the engaging main groove (331). The adjacent ends of the engaging guide groove (332) and the continuous clamping guide groove (333) are connected to each other. The inner walls of the engaging guide groove (332) and the continuous clamping guide groove (333) are both smooth inclined surfaces.

6. A high-temperature fire-resistant cable according to claim 5, characterized in that: The snap-fit ​​connector (34) consists of a snap-fit ​​main block (341), a snap-fit ​​guide slide (342), and a continuous snap-fit ​​slide (343). One end of the snap-fit ​​main block (341) is fixedly connected to the corresponding first snap ring (31) and second snap ring (32). The other end of the snap-fit ​​main block (341) extends into the snap-fit ​​main groove (331) on the second snap ring (32) and the first snap ring (31). The opposite surfaces of the outer surfaces of the two snap-fit ​​main blocks (341) are uniform. The body is formed with a snap-fit ​​guide slide surface (342) and a continuous clamping slide surface (343). The snap-fit ​​guide slide surface (342) and the continuous clamping slide surface (343) are smoothly connected. The outer surfaces of the snap-fit ​​guide slide surface (342) and the continuous clamping slide surface (343) are smooth inclined surfaces. The inclined surfaces of the snap-fit ​​guide slide surface (342) and the continuous clamping slide surface (343) are respectively adapted to the inclined surfaces of the inner cavities of the snap-fit ​​guide groove (332) and the continuous clamping guide groove (333).

7. A high-temperature fire-resistant cable according to claim 6, characterized in that: The back sides of the two snap-fit ​​guide surfaces (342) are respectively attached to the upper and lower snap-fit ​​guide slots (332) at the outer end of the snap-fit ​​main groove (331), and the back sides of the two continuous snap-fit ​​surfaces (343) are respectively attached to the upper and lower continuous snap-fit ​​guide slots (333) at the inner end of the snap-fit ​​main groove (331). The length of the snap-fit ​​connector (34) is smaller than the length of the snap-fit ​​groove (33).

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