Environment-friendly high-flame-retardant flexible fireproof cable

Abstract

The invention relates to the technical field of fireproof cables, in particular to an environment-friendly high-flame-retardant flexible fireproof cable, and solves the problem that the fireproof cable is easy to break or damage when being bent due to the fact that high-temperature-resistant and flame-retardant materials are added to the fireproof cable and the flexibility of the cable is reduced. The environment-friendly high-flame-retardant flexible fireproof cable comprises an insulating protective sleeve, and is characterized in that the inner side of the insulating protective sleeve is provided with a heat-insulating flame-retardant protective sleeve, the inner side of the heat-insulating flame-retardant protective sleeve is provided with an armored protective sleeve, the inner side of the armored protective sleeve is provided with an insulating shielding sleeve, and the outer side of the insulating shielding sleeve is provided with a fireproof layer. A cable core torsion protection sleeve and a plurality of cable cores are inserted into the inner side of the insulation shielding sleeve. According to the invention, the cable core is spirally wound outside the central cylindrical block, so that when the cable is stretched or bent, the spirally wound cable core can counteract the stretching force and the bending force, thereby preventing the cable core from being damaged or broken due to the stretching or bending of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-resistant cables, and particularly to an environmentally friendly and highly flame-retardant flexible fire-resistant cable. Background Art

[0002] A cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is a wire for transmitting electricity or information from one place to another. It is usually a rope-like structure formed by twisting several or several groups of wires (at least two wires in each group). The wires in each group are insulated from each other and are often twisted around a central wire. The whole is covered with a highly insulating covering layer. The cable has the characteristics of conducting electricity inside and being insulated outside. According to different cable materials, it can be divided into: fire-resistant cables, waterproof cables, compressive cables, etc. Among them, fire-resistant cables are named because they are added with high-temperature resistant and flame-retardant materials inside and can not burn for a long time under the influence of external flame combustion.

[0003] However, due to the addition of high-temperature resistant and flame-retardant materials in the existing fire-resistant cables, the flexibility of the cables is reduced, resulting in easy breakage or damage when the fire-resistant cables are bent; therefore, it does not meet the existing requirements. For this reason, we propose an environmentally friendly and highly flame-retardant flexible fire-resistant cable. Summary of the Invention

[0004] The purpose of the present invention is to provide an environmentally friendly and highly flame-retardant flexible fire-resistant cable to solve the problems mentioned in the above background art, that is, due to the addition of high-temperature resistant and flame-retardant materials in the fire-resistant cable, the flexibility of the cable is reduced, resulting in easy breakage or damage when the fire-resistant cable is bent.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An environmentally friendly and highly flame-retardant flexible fire-resistant cable, including an insulating protective sleeve, characterized in that: an insulating and flame-retardant protective sleeve is provided inside the insulating protective sleeve, an armored protective sleeve is provided inside the insulating and flame-retardant protective sleeve, an insulating shielding sleeve is provided inside the armored protective sleeve, a cable core torsion protective sleeve and a plurality of cable cores are inserted inside the insulating shielding sleeve, and the cable cores are installed on the outer surface of the cable core torsion protective sleeve; The cable core torsion protective sleeve includes a plurality of central cylindrical blocks, which are linearly arranged along the length direction of the insulating shielding sleeve. A rubber connecting rod is fixed between every two adjacent central cylindrical blocks. Six torsion rings are rotatably installed on the outer side of the central cylindrical blocks. A plurality of groups of symmetric reset arc-shaped blocks are fixed on the outer surface of the torsion rings. A cable core clamping block is fixed between every two symmetric reset arc-shaped blocks. The middle of the cable core clamping block is recessed towards the torsion ring direction to form a clamping groove, and the cable core is clamped inside the clamping groove. The deflection angle between the cable core clamping blocks on the outer surfaces of two adjacent torsion rings is thirty degrees positive.

[0006] Preferably, a plurality of torsional guiding sliding grooves are provided on the outer surface of the central cylindrical block. A torsional sliding block is slidably installed inside the torsional guiding sliding groove. A reset spring is fixed between one end face of the torsional sliding block and one end face of the torsional guiding sliding groove.

[0007] Preferably, a plurality of first buffer ring grooves are provided on both the outer surface and the inner surface of the armored protective sleeve at equal intervals along its length direction. A plurality of second buffer ring grooves are provided on both the outer surface and the inner surface of the insulating shielding sleeve at equal intervals along its length direction.

[0008] Preferably, a plurality of buffer filling rings are provided between the armored protective sleeve and the insulating shielding sleeve. The buffer filling rings are clamped inside the first buffer ring grooves on the inner surface of the armored protective sleeve and inside the second buffer ring grooves on the outer surface of the insulating shielding sleeve. Water is filled inside the buffer filling rings.

[0009] Preferably, the interiors of the armored protective sleeve and the insulating shielding sleeve are both hollow and filled with inert gas.

[0010] Preferably, the heat-insulating and flame-retardant protective sleeve includes a hollow rubber sleeve. A filling inner cavity is provided inside the hollow rubber sleeve. A flame-retardant liquid is filled inside the filling inner cavity.

[0011] Preferably, the composition of the flame-retardant liquid includes heat-conducting oil T55, alkyl naphthalene type heat-conducting oil, and alkyl biphenyl type heat-conducting oil. The mixing ratio of heat-conducting oil T55, alkyl naphthalene type heat-conducting oil, and alkyl biphenyl type heat-conducting oil is 5:3:2.

[0012] Preferably, a plurality of buffer arc-shaped protrusions are provided on both the inner surface and the outer surface of the hollow rubber sleeve in a linear array along its length direction.

[0013] Preferably, a plurality of groups of outer protective arc plates are provided on the outer side of the hollow rubber sleeve. A plurality of groups of inner protective arc plates are provided on the inner side of the hollow rubber sleeve. The plurality of groups of outer protective arc plates and inner protective arc plates are distributed in a linear array along the length direction of the hollow rubber sleeve.

[0014] Preferably, each group of outer protective arc plates and each group of inner protective arc plates each have six. A plurality of first elastic connection ropes are fixed between the ends of adjacent outer protective arc plates in the same group. And the outer protective arc plates cover the outside of the buffer arc-shaped protrusions on the outer surface of the hollow rubber sleeve. A plurality of second elastic connections are fixed between the ends of adjacent inner protective arc plates in the same group. And the inner protective arc plates cover the outside of the buffer arc-shaped protrusions on the inner surface of the hollow rubber sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention fixes the cable core through the core clamping blocks on the outer surface of the torsion rings outside the central cylindrical block, and through a thirty-degree deflection angle between the core clamping blocks on the outer surfaces of adjacent torsion rings, the cable core is spirally wound outside the central cylindrical block, so as to ensure that when the cable is stretched or bent, the spirally wound cable core can offset the tensile force and bending force, thereby avoiding damage or breakage of the cable core due to the stretching or bending of the cable. 2. When an external pressure acts on the cable, the insulation protection sleeve, heat insulation and flame retardant protection sleeve, armor protection sleeve, and insulation shielding sleeve deform and partially offset and absorb the external pressure. When the remaining pressure is transmitted to the core clamping block through the insulation shielding sleeve, the two ends of the core clamping block bend towards the torsion ring due to the pressure. At this time, the width of the clamping card slot increases, and the reset arc-shaped block bends towards the torsion ring due to the bent end. The bent core clamping block and reset arc-shaped block absorb and offset the pressure. During this process, the cable core is not directly affected by the pressure, and the core clamping block will not squeeze the cable core when it is deformed by pressure, thereby improving the flexibility and compressive performance of the cable. 3. When a flame acts on the insulation protection sleeve, the heat-absorbing liquid in the torsion guiding chute absorbs the heat received by the insulation protection sleeve, and the heat is evenly transmitted to the entire cable through the heat-absorbing liquid, so that the temperature of the insulation protection sleeve will not reach the ignition point in a short time, thereby prolonging the time for the cable temperature to rise and improving the flame retardant and fire prevention performance of the cable. 4. The present invention uses the buffer arc-shaped protrusions to contact the insulation protection sleeve and the armor protection sleeve, so that there is a certain gap between the insulation protection sleeve, the insulation shielding sleeve and the hollow rubber sleeve. When an external pressure acts on the insulation protection sleeve, the buffer arc-shaped protrusions on the inner and outer surfaces of the hollow rubber sleeve deform first, and then the hollow rubber sleeve deforms. Through the two-stage deformation of the hollow rubber sleeve and the buffer arc-shaped protrusions, the external pressure is weakened, absorbed and offset, thereby improving the elastic performance of the cable and ensuring that the cable core will not be damaged or broken due to external pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a front view of the whole of the present invention; Figure 3 is a schematic structural diagram of the heat insulation and flame retardant protection sleeve of the present invention; Figure 4 is a schematic structural diagram of the hollow rubber sleeve of the present invention; Figure 5 is a partial structural diagram of the outer protection arc plate and the inner protection arc plate of the present invention; Figure 6Schematic diagram of the cable core torsion protection sleeve of the present invention; Figure 7 Cross-sectional schematic diagram of the central cylindrical block of the present invention; Figure 8 Connection schematic diagram of the armor protection sleeve and the insulation shielding sleeve of the present invention; Figure 9 Structural cross-sectional view of the armor protection sleeve and the insulation shielding sleeve of the present invention; Figure 10 is Figure 9 Enlarged view of the structure at A in

[0017] In the figure: 1. Insulation protection sleeve; 2. Armor protection sleeve; 3. Insulation shielding sleeve; 4. Heat insulation and flame retardant protection sleeve; 401. Hollow rubber sleeve; 402. Outer protection arc plate; 403. Inner protection arc plate; 404. First elastic connecting rope; 405. Second elastic connection; 406. Buffer arc-shaped protrusion; 407. Filling inner cavity; 5. Cable core torsion protection sleeve; 501. Central cylindrical block; 502. Rubber connecting rod; 503. Torsion ring; 504. Cable core clamping block; 505. Clamping card slot; 506. Reset arc-shaped stop block; 507. Torsion guiding chute; 508. Torsion slider; 509. Reset spring; 6. Cable core; 7. First buffer ring groove; 8. Second buffer ring groove; 9. Buffer filling ring. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0019] As Figure 1 shown, an environmentally friendly and highly flame-retardant flexible fireproof cable includes an insulation protection sleeve 1. An inner side of the insulation protection sleeve 1 is provided with a heat insulation and flame retardant protection sleeve 4. An inner side of the heat insulation and flame retardant protection sleeve 4 is provided with an armor protection sleeve 2. An inner side of the armor protection sleeve 2 is provided with an insulation shielding sleeve 3. A cable core torsion protection sleeve 5 and a plurality of cable cores 6 are inserted through an inner side of the insulation shielding sleeve 3. The cable cores 6 are installed on an outer surface of the cable core torsion protection sleeve 5. The heat insulation and flame retardant protection sleeve 4 absorbs external heat, delays the combustion time of the cable, and thus prevents the fire from spreading along the cable.

[0020] As Figure 2 、 Figure 6 and Figure 7As shown in the figure, the cable core torsion protection sleeve 5 includes a plurality of central cylindrical blocks 501, which are linearly arranged in an array along the length direction of the insulating shield sleeve 3. A rubber connecting rod 502 is fixed between every two adjacent central cylindrical blocks 501. Six torsion rings 503 are rotatably installed on the outer side of the central cylindrical block 501. A plurality of groups of pairwise symmetrical reset arc-shaped blocking blocks 506 are fixed on the outer surface of the torsion ring 503. A cable core clamping block 504 is fixed between every two symmetrical reset arc-shaped blocking blocks 506. The middle of the cable core clamping block 504 is recessed towards the torsion ring 503 to form a clamping card slot 505. The cable core 6 of the cable is clamped inside the clamping card slot 505. The deflection angle between the cable core clamping blocks 504 on the outer surfaces of two adjacent torsion rings 503 is thirty degrees positive. The cable core 6 of the cable is fixed by the cable core clamping blocks 504 on the outer surface of the torsion ring 503 outside the central cylindrical block 501, and through the thirty-degree deflection angle between the cable core clamping blocks 504 on the outer surfaces of adjacent torsion rings 503, the cable core 6 of the cable is spirally wound outside the central cylindrical block 501, so as to ensure that when the cable is stretched or bent, the spirally wound cable core 6 can offset the tensile force and bending force, thereby avoiding damage or breakage of the cable core 6 due to the stretching or bending of the cable.

[0021] A plurality of torsion guiding sliding grooves 507 are provided on the outer surface of the central cylindrical block 501. A torsion sliding block 508 is slidably installed inside the torsion guiding sliding groove 507. A reset spring 509 is fixed between one end face of the torsion sliding block 508 and one end face of the torsion guiding sliding groove 507. The torsion sliding block 508 can slide inside the torsion guiding sliding groove 507, so that the torsion ring 503 can rotate outside the central cylindrical block 501. When the cable is assembled, it can ensure that the cable core clamping blocks 504 corresponding to each other on the outer surfaces of adjacent torsion rings 503 are on the same straight line, which is convenient for the assembly of the cable core 6 of the cable and the cable core torsion protection sleeve 5. After the assembly, the reset spring 509 drives the torsion sliding block 508 and the torsion ring 503 to reset and rotate, so that the cable core clamping block 504 drives the cable core 6 to move, making the cable core 6 in a spiral shape.

[0022] As Figures 2 to 5 shown in the figure, the heat insulation and flame retardant protection sleeve 4 includes a hollow rubber sleeve 401. A filling inner cavity 407 is provided inside the hollow rubber sleeve 401. The filling inner cavity 407 is filled with a flame retardant liquid. The components of the flame retardant liquid include heat transfer oil T55, alkyl naphthalene type heat transfer oil, and alkyl biphenyl type heat transfer oil. The mixing ratio of heat transfer oil T55, alkyl naphthalene type heat transfer oil, and alkyl biphenyl type heat transfer oil is 5:3:2. When the flame acts on the insulating protection sleeve 1, the heat received by the insulating protection sleeve 1 is absorbed by the flame retardant liquid inside the torsion guiding sliding groove 507, and the heat is evenly transferred to the entire cable through the flame retardant liquid, so that the temperature of the insulating protection sleeve 1 will not reach the ignition point in a short time, thereby prolonging the time for the cable temperature to rise.

[0023] Both the inner surface and the outer surface of the hollow rubber sleeve 401 are provided with a plurality of buffer arc-shaped protrusions 406 linearly arrayed along its length direction. By using the buffer arc-shaped protrusions 406 to contact the insulating protective sleeve 1 and the armored protective sleeve 2, there is a certain gap between the insulating protective sleeve 1, the insulating shielding sleeve 3 and the hollow rubber sleeve 401. When an external pressure acts on the insulating protective sleeve 1, the buffer arc-shaped protrusions 406 on the inner surface and the outer surface of the hollow rubber sleeve 401 first deform, so as to weaken and offset the external pressure.

[0024] A plurality of groups of outer protective arc plates 402 are provided on the outer side of the hollow rubber sleeve 401, and a plurality of groups of inner protective arc plates 403 are provided on the inner side of the hollow rubber sleeve 401. The plurality of groups of outer protective arc plates 402 and inner protective arc plates 403 are linearly arrayed along the length direction of the hollow rubber sleeve 401. Each group of outer protective arc plates 402 and each group of inner protective arc plates 403 have six. A plurality of first elastic connection ropes 404 are fixed between the ends of adjacent outer protective arc plates 402 in the same group, and the outer protective arc plates 402 cover the outside of the buffer arc-shaped protrusions 406 on the outer surface of the hollow rubber sleeve 401. A plurality of second elastic connections 405 are fixed between the ends of adjacent inner protective arc plates 403 in the same group, and the inner protective arc plates 403 cover the outside of the buffer arc-shaped protrusions 406 on the inner surface of the hollow rubber sleeve 401. The outer protective arc plates 402 and the inner protective arc plates 403 are used to cover and protect the buffer arc-shaped protrusions 406 on the inner surface and the outer surface of the hollow rubber sleeve 401, so as to prevent the buffer arc-shaped protrusions 406 from being damaged or broken due to friction with the insulating protective sleeve 1 and the insulating shielding sleeve 3.

[0025] As Figures 8 to 10 shown, both the outer surface and the inner surface of the armored protective sleeve 2 are provided with a plurality of first buffer ring grooves 7 equally spaced along its length direction, and both the outer surface and the inner surface of the insulating shielding sleeve 3 are provided with a plurality of second buffer ring grooves 8 equally spaced along its length direction. The first buffer ring grooves 7 on the inner and outer surfaces of the armored protective sleeve 2 and the second buffer ring grooves 8 on the inner and outer surfaces of the insulating shielding sleeve 3 can increase the toughness of the armored protective sleeve 2 and the insulating shielding sleeve 3, so that the armored protective sleeve 2 and the insulating shielding sleeve 3 will not break when being bent, and can be stretched to a certain extent along the length.

[0026] A plurality of buffer filling rings 9 are provided between the armored protective sleeve 2 and the insulating shielding sleeve 3. The buffer filling rings 9 are clamped inside the first buffer ring grooves 7 on the inner surface of the armored protective sleeve 2 and the second buffer ring grooves 8 on the outer surface of the insulating shielding sleeve 3. Water is filled inside the buffer filling rings 9. The buffer filling rings 9 position the armored protective sleeve 2 and the insulating shielding sleeve 3, so that the armored protective sleeve 2 and the insulating shielding sleeve 3 will not move in the length direction, and the water inside the buffer filling rings 9 improves the elasticity of the buffer filling rings 9 and the overall elasticity of the cable.

[0027] The interiors of the armored protective sleeve 2 and the insulation shielding sleeve 3 are both hollow and filled with inert gas. The armored protective sleeve 2 and the insulation shielding sleeve 3 filled with inert gas can increase the elasticity of the armored protective sleeve 2 and the insulation shielding sleeve 3 and their resistance to external pressure. When external pressure is transmitted to the armored protective sleeve 2 and the insulation shielding sleeve 3, the armored protective sleeve 2 and the insulation shielding sleeve 3 undergo elastic deformation, thus preventing the buffer filling ring 9 from being damaged or ruptured due to external pressure.

[0028] Working principle: When assembling the cable, first rotate the torsion ring 503 on the outer side of the central cylindrical block 501 so that the core clamping blocks 504 corresponding to the outer surfaces of two adjacent torsion rings 503 are on the same straight line. After the position of the core clamping block 504 on the outer surface of the torsion ring 503 is adjusted, pass the cable core 6 through the clamping slot 505 in the middle of the core clamping block 504. After all the cable cores 6 and the core torsion protection sleeve 5 are assembled, release the torsion ring 503. At this time, the return spring 509 drives the torsion slider 508 to slide and reset inside the torsion guiding chute 507. The torsion slider 508 drives the torsion ring 503 to rotate and reset, and the core clamping block 504 rotates and resets under the drive of the torsion ring 503. At this time, the cable core 6 becomes spiral and is distributed on the outer side of the central cylindrical block 501 due to the rotational reset of the core clamping block 504; After the cable core 6 and the core torsion protection sleeve 5 are assembled, put the insulation shielding sleeve 3 on the outer sides of the core torsion protection sleeve 5 and the cable core 6. At this time, the core clamping block 504 contacts the inner surface of the insulation shielding sleeve 3. Then snap the buffer filling ring 9 into the second buffer ring groove 8 on the outer surface of the insulation shielding sleeve 3. Then use the armored protective sleeve 2 to cover the insulation shielding sleeve 3 and the buffer filling ring 9. After the armored protective sleeve 2 is installed, put the heat-insulating and flame-retardant protective sleeve 4 on the outer side of the armored protective sleeve 2. Finally, use the insulation protective sleeve 1 to cover the heat-insulating and flame-retardant protective sleeve 4 to complete the assembly of the cable; When a fire occurs outside, the flame acts on the insulation protective sleeve 1, and the temperature of the insulation protective sleeve 1 rises due to the action of the flame. Since the heat-insulating and flame-retardant protective sleeve 4 is in contact with the insulation protective sleeve 1, the flame-retardant liquid filled in the inner cavity 407 of the hollow rubber sleeve 401 absorbs the heat absorbed inside the insulation protective sleeve 1 and transfers it inside the filling inner cavity 407, so that the heat of the flame acting on the insulation protective sleeve 1 is evenly transferred to each part of the cable, thereby slowing down the speed at which the insulation protective sleeve 1 reaches the ignition point, thus preventing the cable from burning and improving the flame-retardant performance of the cable.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A flexible fireproof cable with environmental protection and high flame retardancy, comprising an insulating protective sleeve (1), characterized in that: An inner side of the insulating protective sleeve (1) is provided with a heat-insulating and flame-retardant protective sleeve (4), an inner side of the heat-insulating and flame-retardant protective sleeve (4) is provided with an armored protective sleeve (2), an inner side of the armored protective sleeve (2) is provided with an insulating shielding sleeve (3), a core twisting protective sleeve (5) and a plurality of cable cores (6) are inserted into an inner side of the insulating shielding sleeve (3), and the cable cores (6) are installed on an outer surface of the core twisting protective sleeve (5). The core twisting protective sleeve (5) includes a plurality of central cylindrical blocks (501), the central cylindrical blocks (501) are linearly arrayed along a length direction of the insulating shielding sleeve (3), a rubber connecting rod (502) is fixed between every two adjacent central cylindrical blocks (501), six twisting rings (503) are rotatably installed on an outer side of the central cylindrical block (501), a plurality of groups of pairwise symmetric reset arc-shaped stoppers (506) are fixed on an outer surface of the twisting ring (503), a core clamping block (504) is fixed between every two symmetric reset arc-shaped stoppers (506), a middle of the core clamping block (504) is recessed towards the twisting ring (503) to form a clamping card slot (505), the cable core (6) is clamped inside the clamping card slot (505), and a deflection angle between the core clamping blocks (504) on outer surfaces of two adjacent twisting rings (503) is thirty degrees positive.

2. The environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 1, characterized in that: A plurality of twisting guiding sliding grooves (507) are provided on an outer surface of the central cylindrical block (501), a twisting sliding block (508) is slidably installed inside the twisting guiding sliding groove (507), and a reset spring (509) is fixed between an end face of the twisting sliding block (508) and one end face of the twisting guiding sliding groove (507).

3. An environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 1, characterized in that: A plurality of first buffer ring grooves (7) are provided on both an outer surface and an inner surface of the armored protective sleeve (2) at equal intervals along its length direction, and a plurality of second buffer ring grooves (8) are provided on both an outer surface and an inner surface of the insulating shielding sleeve (3) at equal intervals along its length direction.

4. The environmentally friendly and highly flame-retardant flexible fire-resistant cable according to claim 3, characterized in that: A plurality of buffer filling rings (9) are provided between the armored protective sleeve (2) and the insulating shielding sleeve (3), the buffer filling rings (9) are clamped inside the first buffer ring grooves (7) on the inner surface of the armored protective sleeve (2) and the second buffer ring grooves (8) on the outer surface of the insulating shielding sleeve (3), and water is filled inside the buffer filling rings (9).

5. The environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 4, characterized in that: Both the armored protective sleeve (2) and the insulating shielding sleeve (3) are hollow inside and filled with inert gas.

6. The environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 1, wherein: The heat-insulating and flame-retardant protective sleeve (4) includes a hollow rubber sleeve (401), a filling inner chamber (407) is provided inside the hollow rubber sleeve (401), and a flame-retardant liquid is filled inside the filling inner chamber (407).

7. An environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 6, characterized in that: The composition of the flame-retardant liquid includes heat-conducting oil T clamping card slot (505), alkyl naphthalene type heat-conducting oil, and alkyl biphenyl type heat-conducting oil, and the mixing ratio of heat-conducting oil T clamping card slot (505), alkyl naphthalene type heat-conducting oil, and alkyl biphenyl type heat-conducting oil is 5:3:

2.

8. An environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 7, characterized in that: A plurality of buffer arc-shaped protrusions (406) are provided on both an inner surface and an outer surface of the hollow rubber sleeve (401) linearly arrayed along its length direction.

9. The environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 8, characterized in that: On the outer side of the hollow rubber sleeve (401), a plurality of outer protective arc plates (402) are provided. On the inner side of the hollow rubber sleeve (401), a plurality of inner protective arc plates (403) are provided. The plurality of outer protective arc plates (402) and inner protective arc plates (403) are linearly arrayed along the length direction of the hollow rubber sleeve (401).

10. An environmentally friendly and highly flame-retardant flexible fireproof cable according to claim 9, characterized in that: There are six outer protective arc plates (402) and six inner protective arc plates (403) in each group. Between the ends of adjacent outer protective arc plates (402) in the same group, a plurality of first elastic connecting ropes (404) are fixed. And the outer protective arc plates (402) cover the outside of the buffer arc-shaped protrusions (406) on the outer surface of the hollow rubber sleeve (401). Between the ends of adjacent inner protective arc plates (403) in the same group, a plurality of second elastic connections (405) are fixed. And the inner protective arc plates (403) cover the outside of the buffer arc-shaped protrusions (406) on the inner surface of the hollow rubber sleeve (401).

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