Fireproof cable convenient for butt joint installation

Abstract

This utility model discloses a fireproof cable that facilitates docking and installation, including a central conductor. The central conductor is tightly covered with a rubber insulating inner layer. Multiple rubber insulating inner layers are collectively covered with a rubber bundling sleeve. A rubber insulating outer sleeve is provided outside the rubber bundling sleeve. A splicing sleeve is fitted onto the outer end of the rubber insulating outer sleeve. A bundling ring groove is formed at one end of the outer side of the splicing sleeve. This utility model uses splicing posts to interlock rigid splicing rods and elastic shrink bands into the splicing arc-shaped groove. The rigid splicing rods limit the movement between the two splicing sleeves, preventing misalignment when the two cables are docked. The elastic shrink band pulls between the two splicing sleeves, resulting in a tighter connection. This optimizes the docking process of the fireproof cable and effectively improves the convenience of docking fireproof cables.

Description

Technical Field

[0001] This utility model relates to the field of fireproof cable technology, specifically a fireproof cable that is easy to connect and install. Background Technology

[0002] Fire-resistant cables are a special type of cable that can maintain normal operation for a certain period of time under fire conditions, providing valuable time for rescue and evacuation at fire scenes. They have excellent fire resistance: they can still maintain good electrical performance at high temperatures, are not easily combustible, and do not produce toxic fumes during combustion, thus providing safety guarantees for personnel evacuation and fire rescue.

[0003] However, due to the lack of corresponding auxiliary connection structures, fire-resistant cables cannot be quickly connected as needed during use, thus reducing the convenience of fire-resistant cable connection. Utility Model Content

[0004] This utility model provides a fireproof cable that is easy to connect and install, which can effectively solve the problem mentioned in the background art that the lack of corresponding auxiliary connection structure makes it impossible to quickly connect the fireproof cable as needed during use, thus reducing the convenience of fireproof cable connection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fireproof cable that is easy to install by docking, comprising a central conductor, characterized in that: the outer side of the central conductor is tightly covered with a rubber insulating inner layer, the outer sides of multiple rubber insulating inner layers are jointly covered with a rubber bundle sleeve, and a rubber insulating outer sleeve is provided on the outer side of the rubber bundle sleeve;

[0006] The outer side of the rubber insulating jacket is provided with a splicing binding connection mechanism;

[0007] The splicing bundling connection mechanism includes a splicing sleeve;

[0008] The outer end of the rubber insulating jacket is fitted with a splicing sleeve, and a binding ring groove is opened at one end of the outer side of the splicing sleeve.

[0009] The other end of the splicing sleeve is provided with a splicing arc-shaped groove evenly spaced along the circumference, and a splicing column is fixedly connected evenly spaced on one side inside the splicing arc-shaped groove.

[0010] The inside of the splicing arc groove is fitted with rigid splicing rods at intervals along the circumference, and the inside of the splicing arc groove is fitted with elastic shrink bands along the circumference at the positions corresponding to the sides of the rigid splicing rods.

[0011] Preferably, the inner side of the splicing sleeve is tightly fitted to the outer side of the rubber insulating sleeve, and the rigid splicing rod and the elastic shrink band are both tightly fitted to the inner wall of the splicing arc groove.

[0012] Preferably, the rubber strapping sleeve is provided with an external expansion flame-retardant protection mechanism on its outer side;

[0013] The external expansion flame-retardant protective mechanism includes a flexible silicone cushioning sleeve;

[0014] The rubber bundle sleeve is tightly covered with a flexible silicone cushioning sleeve, and the flexible silicone cushioning sleeve is tightly covered with an insulating bundle mesh.

[0015] The outer side of the insulating bundled mesh is tightly covered with a protective rubber jacket. The outer side of the protective rubber jacket is provided with equally spaced and uniformly spaced installation grooves along the circumferential direction. Flexible spliced ​​rubber strips are embedded and installed inside the installation grooves.

[0016] Flame-retardant expanded rubber sheets are embedded axially inside the flexible splicing rubber strip.

[0017] Preferably, the inner and outer rings of the flexible silicone buffer sleeve are provided with arc-shaped grooves at equal intervals along the circumferential direction, and the outer side of the flexible spliced ​​rubber strip is flush with the outer ring of the protective rubber outer sleeve.

[0018] Preferably, the rubber strapping sleeve is provided with an internal flexible support mechanism;

[0019] The internal flexible support mechanism includes a central connecting cable;

[0020] A central connecting cable is provided in the middle of the inner side of the rubber bundle sleeve, and a central support triangular strip is uniformly and equidistantly fixed to the outer side of the central connecting cable along the axial direction.

[0021] The rubber bundle sleeve is filled with a flexible filler strip at the gap on the side of the inner rubber insulation layer, and a connecting soft rubber sheet is fixedly connected to the end of the flexible filler strip.

[0022] Preferably, the side of the central support triangular strip is tightly fitted to the outer side of the rubber insulating inner layer, and the side arc surface of the flexible filler strip is tightly fitted to the outer side of the rubber insulating inner layer.

[0023] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0024] 1. A splicing bundling connection mechanism is set up. Each component is sleeved onto the outside of the rubber insulating jacket through splicing sleeves. Bundling straps and bundling ring grooves are used to bundle the ends of the splicing sleeves to make the splicing sleeves fit more tightly with the outside of the cable. Splicing posts are used to interlock rigid splicing rods and elastic shrink tapes into the splicing arc grooves. The rigid splicing rods can limit the movement between the two splicing sleeves to prevent misalignment when the two cables are connected. The elastic shrink tapes are used to pull the two splicing sleeves together, thereby making the connection between the two splicing sleeves tighter. This optimizes the connection process of fire-resistant cables and effectively improves the convenience of connecting fire-resistant cables.

[0025] 2. An external expansion flame-retardant protection mechanism is installed. The insulating bundle mesh is attached to the outside of the rubber bundle sleeve through a flexible silicone buffer sleeve to buffer and protect the outer ring of the fireproof cable. Flexible spliced ​​rubber strips are attached to the outside of the protective rubber jacket through an installation groove. The expanded flame-retardant rubber sheet isolates the outside of the fireproof cable to prevent open flames from coming into contact with the core components inside the cable, thereby effectively improving the overall fire resistance of the fireproof cable and further enhancing the safety of its use.

[0026] 3. An internal flexible support mechanism is set up. The central support triangular strip is installed inside the rubber bundle sleeve through the central connecting cable. The central support triangular strip supports the inner layer of rubber insulation. The gaps on the side of the inner layer of rubber insulation are filled by flexible filler strips and connecting soft rubber sheets. This effectively prevents the internal components of the fireproof cable from shifting after being squeezed during use, and effectively improves the stability of the internal structure of the fireproof cable. Attached Figure Description

[0027] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0028] In the attached diagram:

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the end structure of this utility model;

[0031] Figure 3 This is a structural schematic diagram of the splicing bundling connection mechanism of this utility model;

[0032] Figure 4 This is a schematic diagram of the external expansion flame-retardant protection mechanism of this utility model;

[0033] Figure 5 This is a schematic diagram of the internal flexible support mechanism of this utility model;

[0034] The diagram labels are: 1. Center conductor; 2. Inner rubber insulation layer; 3. Rubber bundle sleeve; 4. Outer rubber insulating sleeve.

[0035] 5. Splicing bundling connection mechanism; 501. Splicing sleeve; 502. Bundling ring groove; 503. Splicing arc groove; 504. Splicing column; 505. Rigid splicing rod; 506. Elastic shrink tape;

[0036] 6. External expansion flame-retardant protective mechanism; 601. Flexible silicone buffer sleeve; 602. Insulating binding net; 603. Protective rubber jacket; 604. Installation groove; 605. Flexible splicing rubber strip; 606. Flame-retardant expansion rubber sheet;

[0037] 7. Internal flexible support mechanism; 701. Central connecting cable; 702. Central support triangular strip; 703. Flexible filling strip; 704. Connecting soft rubber sheet. Detailed Implementation

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] Example: Figure 1-5 As shown, this utility model provides a technical solution, a fireproof cable that is easy to install, including a center conductor 1, a rubber insulating inner layer 2 tightly wrapped around the outside of the center conductor 1, a rubber bundle sleeve 3 wrapped around the outside of multiple rubber insulating inner layers 2, and a rubber isolation outer sleeve 4 provided on the outside of the rubber bundle sleeve 3.

[0040] The rubber insulating jacket 4 is equipped with a splicing binding connection mechanism 5 on its outer side;

[0041] The splicing bundling connection mechanism 5 includes a splicing sleeve 501, a bundling ring groove 502, a splicing arc groove 503, a splicing column 504, a rigid splicing rod 505, and an elastic shrink band 506.

[0042] A splicing sleeve 501 is fitted onto the outer end of the rubber insulating jacket 4. A binding ring groove 502 is provided at one end of the outer side of the splicing sleeve 501, and a splicing arc-shaped groove 503 is evenly spaced along the circumference at the other end of the outer side of the splicing sleeve 501. Splicing posts 504 are evenly fixedly connected to one side of the inner side of the splicing arc-shaped groove 503 at equal intervals. Rigid splicing rods 505 are interlocked at intervals along the circumference inside the splicing arc-shaped groove 503. An elastic shrink band 506 is interlocked along the circumference inside the splicing arc-shaped groove 503 at a position corresponding to the side of the rigid splicing rod 505. The inner side of the splicing sleeve 501 is tightly fitted to the outer side of the rubber insulating jacket 4, and both the rigid splicing rods 505 and the elastic shrink band 506 are tightly fitted to the inner wall of the splicing arc-shaped groove 503. The splicing sleeve 501 is used to secure the various components. The component is fitted onto the outside of the rubber insulating jacket 4. The end of the splicing sleeve 501 is bundled with the bundling strap and the bundling ring groove 502 to make the splicing sleeve 501 fit more tightly with the outside of the cable. The rigid splicing rod 505 and the elastic shrink band 506 are intermittently clamped into the splicing arc groove 503 by the splicing post 504. The rigid splicing rod 505 can limit the two splicing sleeves 501 to prevent misalignment when the two cables are connected. The elastic shrink band 506 pulls the two splicing sleeves 501 together, making the connection between the two splicing sleeves 501 tighter. This optimizes the connection process of fireproof cables and effectively improves the convenience of the connection process between fireproof cables.

[0043] The rubber bundle sleeve 3 is equipped with an external expansion flame-retardant protection mechanism 6 on its outer side;

[0044] The external expansion flame-retardant protective mechanism 6 includes a flexible silicone buffer sleeve 601, an insulating bundle net 602, a protective rubber jacket 603, an installation groove 604, a flexible splicing rubber strip 605, and a flame-retardant expansion rubber sheet 606.

[0045] The outer side of the rubber strapping sleeve 3 is tightly covered with a flexible silicone cushioning sleeve 601. The outer side of the flexible silicone cushioning sleeve 601 is tightly covered with an insulating strapping net 602. The outer side of the insulating strapping net 602 is tightly covered with a protective rubber outer sleeve 603. The outer side of the protective rubber outer sleeve 603 has evenly spaced mounting grooves 604 along the circumferential direction. Flexible spliced ​​rubber strips 605 are embedded inside the mounting grooves 604. Flame-retardant expanding rubber sheets 606 are embedded axially inside the flexible spliced ​​rubber strips 605. Both the inner and outer rings of the flexible silicone cushioning sleeve 601 have equally spaced arc-shaped grooves along the circumferential direction. The outer side of the rubber strip 605 is flush with the outer ring of the protective rubber jacket 603. The insulating bundle net 602 is attached to the outside of the rubber bundle sleeve 3 through the flexible silicone buffer sleeve 601 to buffer and protect the outer ring of the fireproof cable. The flexible splicing rubber strip 605 is snapped to the outside of the protective rubber jacket 603 through the installation groove 604. The expanded flame-retardant expansion rubber sheet 606 isolates the outside of the fireproof cable to prevent open flame from contacting the core components inside the cable, thereby effectively improving the overall fireproof performance of the fireproof cable and further improving the safety of the fireproof cable in use.

[0046] The rubber strapping sleeve 3 is equipped with an internal flexible support mechanism 7;

[0047] The internal flexible support mechanism 7 includes a central connecting cable 701, a central support triangular strip 702, a flexible filling strip 703, and a connecting soft rubber sheet 704;

[0048] A central connecting cable 701 is provided in the middle of the inner side of the rubber bundle sleeve 3. A central support triangular strip 702 is uniformly and equidistantly fixed to the outer side of the central connecting cable 701 along the axial direction. A flexible filler strip 703 is filled in the gaps on the sides of the rubber insulation inner layer 2 inside the rubber bundle sleeve 3. A connecting soft rubber sheet 704 is fixedly connected to the end of the flexible filler strip 703. The sides of the central support triangular strip 702 are tightly fitted with the outer side of the rubber insulation inner layer 2, and the curved surface of the side of the flexible filler strip 703 is also tightly fitted with the outer side of the rubber insulation inner layer 2. The central support triangular strip 702 is installed into the rubber bundle sleeve 3 through the central connecting cable 701, and the central support triangular strip 702 supports the rubber insulation inner layer 2. The gaps on the sides of the rubber insulation inner layer 2 are filled by the flexible filler strip 703 and the connecting soft rubber sheet 704, thereby effectively preventing the displacement of internal components after the fire-resistant cable is squeezed during use, and effectively improving the stability of the internal structure of the fire-resistant cable.

[0049] The working principle and usage process of this utility model: In the actual application of this utility model, when fireproof cables are required, one end of the center conductor 1 needs to be connected to the corresponding power supply end first. The outer side of the center conductor 1 is protected by the rubber insulation inner layer 2, and the outer side of the rubber insulation inner layer 2 is bundled by the rubber bundling sleeve 3. Then, when it is necessary to connect fireproof cables, each component is put on the outer side of the rubber isolation outer sleeve 4 by the splicing sleeve 501. Then, the end of the splicing sleeve 501 is bundled by the bundling cable tie and the bundling ring groove 502 so that the splicing sleeve 501 fits more tightly with the outer side of the cable.

[0050] Then, the rigid splicing rod 505 and the elastic shrink band 506 are intermittently snapped into the splicing arc groove 503 by the splicing column 504. The rigid splicing rod 505 can limit the two splicing sleeves 501 to prevent misalignment of the splicing sleeves 501 when the two cables are connected. Then, the elastic shrink band 506 pulls the two splicing sleeves 501 together, so that the connection between the two splicing sleeves 501 is tighter, which optimizes the connection process of fireproof cables and effectively improves the convenience of the connection process between fireproof cables.

[0051] When it is necessary to protect the outer side of the cable in a fire, the insulating bundle net 602 is attached to the outside of the rubber bundle sleeve 3 through the flexible silicone buffer sleeve 601 to buffer and protect the outer ring of the fireproof cable. Then, the flexible splicing rubber strip 605 is snapped to the outside of the protective rubber jacket 603 through the installation groove 604. When the open flame outside the cable melts the rubber isolation jacket 4, the flame-retardant expansion rubber sheet 606 expands under the scorching of the open flame. The expanded flame-retardant expansion rubber sheet 606 then isolates the outside of the fireproof cable to prevent the open flame from coming into contact with the core components inside the cable, thereby effectively improving the overall fire resistance of the fireproof cable and further improving the safety of the fireproof cable.

[0052] When auxiliary support is needed for the internal structure of the fireproof cable, the central support triangular strip 702 is installed inside the rubber bundle sleeve 3 through the central connecting cable 701, so as to support the rubber insulation inner layer 2 through the central support triangular strip 702. Then, the gaps on the side of the rubber insulation inner layer 2 are filled by the flexible filling strip 703 and the connecting soft rubber sheet 704, thereby effectively preventing the internal components from shifting after being squeezed during the use of the fireproof cable, and effectively improving the stability of the internal structure of the fireproof cable.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A fire resistant cable for facilitated termination installation comprising a central conductor (1), characterized in that: The outer side of the central conductor (1) is tightly covered with a rubber insulating inner layer (2), and the outer side of multiple rubber insulating inner layers (2) is covered with a rubber bundle sleeve (3). A rubber insulating outer sleeve (4) is provided on the outer side of the rubber bundle sleeve (3). The rubber insulating jacket (4) is provided with a splicing bundling connection mechanism (5) on the outside; The splicing bundling connection mechanism (5) includes a splicing sleeve (501); The outer end of the rubber isolation jacket (4) is fitted with a splicing sleeve (501), and a binding ring groove (502) is opened at one end of the outer side of the splicing sleeve (501). The other end of the splicing sleeve (501) is provided with splicing arc grooves (503) evenly spaced along the circumferential direction, and splicing small columns (504) are evenly fixedly connected to one side of the splicing arc groove (503). The splicing arc groove (503) is fitted with rigid splicing rods (505) at intervals along the circumferential direction inside, and an elastic shrink band (506) is fitted with the side of the rigid splicing rod (505) along the circumferential direction inside the splicing arc groove (503).

2. A fire resistant cable for ease of installation against a surface as claimed in claim 1, wherein, The inner side of the splicing sleeve (501) is tightly fitted with the outer side of the rubber isolation jacket (4), and the rigid splicing rod (505) and the elastic shrink band (506) are tightly fitted with the inner wall of the splicing arc groove (503).

3. A fire resistant cable for ease of installation against a surface as claimed in claim 1, wherein, The rubber bundle sleeve (3) is provided with an external expansion flame-retardant protection mechanism (6) on the outside; The external expansion flame-retardant protective mechanism (6) includes a flexible silicone buffer sleeve (601); The rubber bundle sleeve (3) is tightly covered with a flexible silicone buffer sleeve (601) on the outside, and the flexible silicone buffer sleeve (601) is tightly covered with an insulating bundle net (602) on the outside. The insulating bundle net (602) is tightly covered with a protective rubber jacket (603). The protective rubber jacket (603) has an installation groove (604) evenly spaced along the circumferential direction on the outside. A flexible splicing rubber strip (605) is embedded in the installation groove (604). The flexible splicing rubber strip (605) has a flame-retardant expanding rubber sheet (606) embedded in it along the axial direction.

4. A fire resistant cable for ease of installation against a surface as claimed in claim 3 wherein, The flexible silicone buffer sleeve (601) has arc-shaped grooves equidistantly spaced along the circumference on both its inner and outer rings, and the outer side of the flexible spliced ​​rubber strip (605) is flush with the outer ring of the protective rubber jacket (603).

5. The fire resistant cable of claim 1, wherein, The rubber strapping sleeve (3) is provided with an internal flexible support mechanism (7); The internal flexible support mechanism (7) includes a central connecting cable (701); A central connecting cable (701) is provided in the middle of the inner side of the rubber bundle sleeve (3), and a central support triangular strip (702) is uniformly and equidistantly fixed on the outer side of the central connecting cable (701) along the axial direction. The rubber bundle sleeve (3) is filled with a flexible filler strip (703) at the gap on the side of the rubber insulating inner layer (2), and a connecting soft rubber sheet (704) is fixedly connected to the end of the flexible filler strip (703).

6. A fire resistant cable for ease of installation against a surface as claimed in claim 5 wherein, The center support triangular strip (702) is tightly attached between the side of the rubber insulation inner layer (2) and the outside of the rubber insulation inner layer (2), and the side arc of the flexible filling strip (703) is tightly attached between the side of the rubber insulation inner layer (2) and the outside of the rubber insulation inner layer (2).

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