Fireproof low-smoke halogen-free cable

Abstract

The utility model relates to the technical field of low-smoke halogen-free cables, and provides a fireproof low-smoke halogen-free cable, which comprises a protective sleeve and a conductor, the conductor is arranged in the protective sleeve, a fireproof low-smoke structure is arranged in the protective sleeve, an external fixing assembly is arranged on the protective sleeve, a flame-retardant layer is wrapped on the inner layer of the protective sleeve, and an anti-crack layer is wrapped in the flame-retardant layer. A halogen-free heat-resistant filler is wrapped in the crack-resistant layer, a halogen-free flame-retardant fiber core is arranged in the halogen-free heat-resistant filler, the conductor is arranged in the halogen-free heat-resistant filler, and the compression-resistant core is wrapped in the halogen-free heat-resistant filler. According to the technical scheme, the problems that in the related technology, a large amount of smoke dust and poison gas are generated during combustion, the environment is polluted, the human body is injured, potential safety hazards are brought to life and property safety of people, the cable structure is inconvenient to install and fix, the skin is prone to being damaged through an existing fixing mode, and potential safety hazards exist are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-smoke halogen-free cables, and in particular to a fireproof low-smoke halogen-free cable. Background Art

[0002] Polyvinyl chloride (PVC) is the most widely used polymer material in the cable industry. PVC cable material has good electrical insulation, certain mechanical strength, flame retardancy, low price and wide sources. It has been widely used as the insulation and sheath of wires and cables. However, due to the structural shortcomings of PVC itself, it cannot meet the application requirements of some special occasions. Traditional polyvinyl chloride cable sheathing materials are made of flammable polymer synthetic materials. The flame retardancy cannot meet the requirements in some special occasions, it is not resistant to high temperatures and is prone to aging. The service life is short. During use, it is easy to burn and cause fire due to excessive line load or excessive external temperature. When it burns, it produces a large amount of smoke and toxic gas, which pollutes the environment, causes harm to the human body, and poses a hidden danger to people's life and property safety. In addition, the structure of the cable is not convenient for installation and fixation. The current fixing method can easily damage the skin, posing a safety hazard.

[0003] Therefore, improvements are made to address the above problems. Utility Model Content

[0004] The utility model provides a fireproof low-smoke halogen-free cable, which solves the problem in the related technology that a large amount of smoke and toxic gas is generated during combustion, polluting the environment, causing harm to the human body, and posing a hidden danger to people's life and property safety, and the structure of the cable is not convenient for installation and fixation, and the current fixing method can easily damage the skin, posing a safety hazard.

[0005] The technical solution of the utility model is as follows:

[0006] A protective cover and a conductor, wherein the conductor is arranged in the protective cover;

[0007] A fireproof and low-smoke structure, wherein the fireproof and low-smoke structure is arranged inside the protective cover;

[0008] An external fixing component, the external fixing component is arranged on the protective cover;

[0009] The fireproof and low-smoke structure includes a flame retardant layer, the flame retardant layer is wrapped in the inner layer of the protective sleeve, the flame retardant layer is wrapped in an anti-cracking layer, the anti-cracking layer is wrapped in a halogen-free heat-resistant filler, a halogen-free flame retardant fiber core is arranged in the halogen-free heat-resistant filler, the conductor is arranged in the halogen-free heat-resistant filler, and a compression-resistant core is wrapped inside the halogen-free heat-resistant filler.

[0010] As a further technical solution, the external fixing assembly includes an inner sleeve, which is sleeved between the protective sleeve and the flame retardant layer. The surface of the protective sleeve is provided with a plurality of thread grooves, and the surface of the protective sleeve is provided with a plurality of through holes, which correspond to the positions of the thread grooves.

[0011] As a further technical solution, the protective cover is externally sleeved and connected with a sleeve frame, the outer surface of the sleeve frame is provided with a plurality of installation grooves, connecting bolts are arranged in the installation grooves, the lower ends of the connecting bolts pass through the through holes and are screwed and connected with the threaded grooves, and a protrusion is arranged at the bottom of the sleeve frame.

[0012] As a further technical solution, a lower groove is provided on the side surface of the protrusion, a fixing plate is sleeved and connected to the lower end of the protrusion, the fixing plate is plug-connected to the lower groove, a threaded hole is provided in the lower groove, and a docking groove is provided on the side surface of the fixing plate.

[0013] As a further technical solution, a fixing bolt is arranged in the docking groove, and the fixing bolt passes through the docking groove and is screwed to the threaded hole, and a pair of fixing ears are arranged on both side end surfaces of the fixing plate.

[0014] As a further technical solution, the pressure-resistant core is a hollow structure, and the pressure-resistant core is made of insulating material.

[0015] As a further technical solution, the conductor and the halogen-free flame-retardant fiber core are both provided in plurality, and the ratio of the number of the conductors to the number of the halogen-free flame-retardant fiber cores is 2:1.

[0016] As a further technical solution, the maximum diameter of the protective sleeve located at the inner sleeve matches the inner diameter of the sleeve frame.

[0017] The working principle and beneficial effects of the utility model are:

[0018] The utility model is provided with an external fixing component. Through the interaction of structures such as the inner sleeve, threaded groove, perforation, sleeve frame, connecting bolts, fixing plate, docking groove and fixing bolts, the overall cable structure can be fixed inside the sleeve frame through the internal and external matching connection structure, so that the entire cable cannot be pulled and moved, and the connection is tightly pressed together, and will not break when pulled vigorously, thereby improving safety and stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2This is an axonometric sectional view of the utility model;

[0022] Figure 3 This is a cross-sectional view of the utility model;

[0023] In the figure: 1. Protective cover; 2. Conductor; 3. Fire-proof and low-smoke structure; 3-1. Flame-retardant layer; 3-2. Anti-cracking layer; 3-3. Halogen-free heat-resistant filler; 3-4. Halogen-free flame-retardant fiber core; 3-5. Pressure-resistant core; 4. External fixing component; 4-1. Inner sleeve; 4-2. Threaded groove; 4-3. Perforation; 4-4. Sleeve frame; 4-5. Installation groove; 4-6. Connecting bolt; 4-7. Bump; 4-8. Fixing plate; 4-9. Threaded hole; 4-10. Docking groove; 4-11. Fixing bolt; 4-12. Fixing ear; 13. Lower groove. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1~Figure 3 As shown, this embodiment provides a fire-proof low-smoke halogen-free cable, comprising

[0026] A protective cover 1 and a conductor 2, wherein the conductor 2 is arranged in the protective cover 1;

[0027] A fireproof and low-smoke structure 3, which is arranged inside the protective cover 1;

[0028] An external fixing component 4, which is arranged on the protective cover 1;

[0029] The fire-proof and low-smoke structure 3 includes a flame-retardant layer 3-1, which is wrapped in the inner layer of the protective cover 1. The flame-retardant layer 3-1 is wrapped with an anti-cracking layer 3-2, which is wrapped with a halogen-free heat-resistant filler 3-3. The halogen-free heat-resistant filler 3-3 is provided with a halogen-free flame-retardant fiber core 3-4. The conductor 2 is arranged in the halogen-free heat-resistant filler 3-3, and the halogen-free heat-resistant filler 3-3 is wrapped with a compression-resistant core 3-5.

[0030] In this embodiment, in order to achieve the effect of low smoke and halogen-free, a fire-proof and low-smoke structure 3 is designed, and a flame-retardant layer 3-1, an anti-cracking layer 3-2, a halogen-free heat-resistant filler 3-3, a halogen-free flame-retardant fiber core 3-4 and a pressure-resistant core 3-5 are arranged inside. The flame-retardant effect is achieved through the multi-layer structure, thereby reducing the incidence of fire.

[0031] Further, the external fixing component 4 includes an inner sleeve 4-1, which is sleeved between the protective sleeve 1 and the flame retardant layer 3-1. The surface of the protective sleeve 1 is provided with a plurality of thread grooves 4-2, and the surface of the protective sleeve 1 is provided with a plurality of through holes 4-3, and the through holes 4-3 correspond to the positions of the thread grooves 4-2. The outer sleeve of the protective sleeve 1 is sleeved and connected with a sleeve frame 4-4, and the outer surface of the sleeve frame 4-4 is provided with a plurality of mounting grooves 4-5. The mounting grooves 4-5 are provided with connecting bolts 4-6, and the lower ends of the connecting bolts 4-6 pass through the through holes 4-3 and are screwed into the thread grooves 4-2. The bottom of the sleeve 4-4 is provided with a protrusion 4-7, and the side surface of the protrusion 4-7 is provided with a lower groove 13. The lower end of the protrusion 4-7 is sleeved and connected with a fixing plate 4-8. The fixing plate 4-8 is plug-connected with the lower groove 13. A threaded hole 4-9 is provided in the lower groove 13. A docking groove 4-10 is provided on the side surface of the fixing plate 4-8. A fixing bolt 4-11 is provided in the docking groove 4-10. The fixing bolt 4-11 passes through the docking groove 4-10 and is screwed and connected with the threaded hole 4-9. A pair of fixing ears 4-12 are provided on both side end faces of the fixing plate 4-8.

[0032] In this embodiment, in order to achieve the anti-breakage fixing effect of the cable, an external fixing component 4 is designed, an inner sleeve 4-1 is arranged between the internal protective sleeve 1 and the flame retardant layer 3-1, a thread groove 4-2 is provided on the surface of the inner sleeve 4-1, a through hole 4-3 is provided on the surface of the protective sleeve 1 at a position opposite to the thread groove 4-2, a sleeve frame 4-4 is sleeved on the outside of the protective sleeve 1, the sleeve frame 4-4 is located outside the inner sleeve 4-1, and a mounting groove 4-5 is provided on the surface of the sleeve frame 4-4 at the same position as the through hole 4-3 and the thread groove 4-2, a connecting bolt 4-6 is installed in the mounting groove 4-5, and the connecting bolt 4-6 can be screwed and connected to the thread groove 4-2 to fix the inner sleeve 4 -1 is fixedly connected with the sleeve 4-4 and presses the position of the through hole 4-3 to resist pulling. Two protrusions 4-7 are arranged at the bottom of the sleeve 4-4. A fixing plate 4-8 is sleeved on the lower end of the protrusion 4-7. A lower groove 13 is provided at the bottom of the protrusion 4-7. The lower groove 13 is plug-connected with the fixing plate 4-8. A threaded hole 4-9 is provided on the inner side of the lower groove 13. A docking groove 4-10 is provided on the side end face of the fixing plate 4-8. The docking groove 4-10 is coaxial with the threaded hole 4-9. A fixing bolt 4-11 is installed in the docking groove 4-10. The fixing bolt 4-11 is screwed and connected with the threaded hole 4-9 to fix the fixing plate 4-8 with the protrusion 4-7.

[0033] Furthermore, the pressure-resistant core 3-5 is a hollow structure, and the pressure-resistant core 3-5 is made of insulating material.

[0034] In this embodiment, the hollow insulating material is used to make the pressure-resistant core 3 - 5 have a supporting effect and improve safety.

[0035] Furthermore, the conductor 2 and the halogen-free flame-retardant fiber core 3 - 4 are both provided in plurality, and the ratio of the number of the conductor 2 to the number of the halogen-free flame-retardant fiber core 3 - 4 is 2:1.

[0036] In this embodiment, the proportion of the conductor 2 and the halogen-free flame-retardant fiber core 3 - 4 is matched so that the halogen-free flame-retardant fiber core 3 - 4 can suppress flame retardancy and improve safety.

[0037] Furthermore, the maximum diameter of the protective sleeve 1 located at the inner sleeve 4-1 matches the inner diameter of the sleeve frame 4-4.

[0038] In this embodiment, the outer surface of the protective sleeve 1 can fit tightly with the inner surface of the sleeve frame 4-4 through the matching effect of the same diameter, and the sleeve frame 4-4 can press the through hole 4-3, and will not break when pulled.

[0039] When it is needed, an inner sleeve 4-1 is set at every fixed interval in the protective sleeve 1. During installation, the sleeve frame 4-4 is put on the protective sleeve 1 in advance, moved to the inner sleeve 4-1, and the through hole 4-3 is aligned with the installation groove 4-5. Then, the connecting bolt 4-6 is inserted into the installation groove 4-5 and screwed to the threaded groove 4-2, the sleeve frame 4-4 is fastened, and then the bottom plate is fixed to the wall through the fixing ear 4-12 mounting screws, and then the sleeve frame 4-4 is inserted into the fixing plate 4-8 through the lower groove 13 through the bottom protrusion 4-7, and finally the fixing bolt 4-11 is screwed through the docking groove 4-10 to the threaded hole 4-9.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fireproof low-smoke halogen-free cable, characterized in that: include A protective cover (1) and a conductor (2), wherein the conductor (2) is arranged in the protective cover (1); A fireproof and low-smoke structure (3), wherein the fireproof and low-smoke structure (3) is arranged inside the protective cover (1); An external fixing component (4), wherein the external fixing component (4) is arranged on the protective cover (1); The fireproof and low-smoke structure (3) comprises a flame retardant layer (3-1), the flame retardant layer (3-1) is wrapped in the inner layer of the protective sleeve (1), the flame retardant layer (3-1) is wrapped in an anti-cracking layer (3-2), the anti-cracking layer (3-2) is wrapped in a halogen-free heat-resistant filler (3-3), a halogen-free flame retardant fiber core (3-4) is arranged in the halogen-free heat-resistant filler (3-3), the conductor (2) is arranged in the halogen-free heat-resistant filler (3-3), and a compression-resistant core (3-5) is wrapped in the halogen-free heat-resistant filler (3-3).

2. A fireproof low-smoke halogen-free cable according to claim 1, characterized in that: The external fixing assembly (4) comprises an inner sleeve (4-1), the inner sleeve (4-1) being sleeved between the protective sleeve (1) and the flame retardant layer (3-1), the surface of the protective sleeve (1) being provided with a plurality of thread grooves (4-2), the surface of the protective sleeve (1) being provided with a plurality of through holes (4-3), the positions of the through holes (4-3) corresponding to the thread grooves (4-2).

3. A fireproof low-smoke halogen-free cable according to claim 2, characterized in that: The protective sleeve (1) is externally sleeved and connected to a sleeve frame (4-4); a plurality of mounting grooves (4-5) are provided on the outer surface of the sleeve frame (4-4); connecting bolts (4-6) are provided in the mounting grooves (4-5); the lower ends of the connecting bolts (4-6) pass through the through holes (4-3) and are screwed and connected to the threaded grooves (4-2); and a protrusion (4-7) is provided at the bottom of the sleeve frame (4-4).

4. A fireproof low-smoke halogen-free cable according to claim 3, characterized in that: A lower groove (4-13) is provided on the side surface of the protrusion (4-7); a fixing plate (4-8) is sleeved and connected to the lower end of the protrusion (4-7); the fixing plate (4-8) is plug-connected with the lower groove (4-13); a threaded hole (4-9) is provided in the lower groove (4-13); and a docking groove (4-10) is provided on the side surface of the fixing plate (4-8).

5. A fireproof low-smoke halogen-free cable according to claim 4, characterized in that: A fixing bolt (4-11) is arranged in the docking groove (4-10), and the fixing bolt (4-11) passes through the docking groove (4-10) and is screwed and connected to the threaded hole (4-9). A pair of fixing ears (4-12) are arranged on both side end surfaces of the fixing plate (4-8).

6. A fireproof low-smoke halogen-free cable according to claim 1, characterized in that: The pressure-resistant core (3-5) is a hollow structure, and the pressure-resistant core (3-5) is made of insulating material.

7. A fireproof low-smoke halogen-free cable according to claim 1, characterized in that: The conductor (2) and the halogen-free flame-retardant fiber core (3-4) are both provided in plurality, and the ratio of the number of the conductor (2) to the number of the halogen-free flame-retardant fiber core (3-4) is 2:

1.

8. A fireproof low-smoke halogen-free cable according to claim 3, characterized in that: The maximum diameter of the protective sleeve (1) located at the inner sleeve (4-1) matches the inner diameter of the sleeve frame (4-4).

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