Fireproof B1-level cable

Abstract

The invention relates to a fireproof B1-level cable, and relates to the field of cables, the fireproof B1-level cable comprises a cable body, the outer side of the cable body is sleeved with a plurality of sheath pipes arranged in the length direction of the cable body, the adjacent sheath pipes are in contact with each other, and the joints of the adjacent sheath pipes are sleeved with locking pipes; the outer side wall of each protective sleeve and the outer side wall of each locking pipe are fixedly connected with a plurality of circles of anti-theft rods, each circle of anti-theft rods are distributed in a wave shape, and each anti-theft rod in each circle and the anti-theft rods in the adjacent circle are distributed in a staggered mode. The cable protection device has the effect of enhancing cable protection.

Description

Technical Field

[0001] This application relates to the field of cables, and more particularly to a fire-resistant B1 grade cable. Background Technology

[0002] With the increasingly widespread application of cables, cable theft has gradually become a focus of attention. The theft of cables in important locations not only causes economic losses but may also disrupt normal production and daily life. Because underground cables are easily excavated, they are prone to theft. The common method of cable theft involves cutting the cable in two places and then pulling it out from one end.

[0003] To prevent cable theft, common practices include strengthening security measures in the cable-laying area, such as installing surveillance cameras and setting up fences. In addition, some cables have simple protective structures on their outer layer, such as wrapping them with a hard protective shell to increase the difficulty of cutting the cable during theft. However, even hard protective shells are easily cut by equipment such as chainsaws, making it difficult to truly enhance cable protection. Summary of the Invention

[0004] To enhance the protection of cables, this application provides a fire-resistant B1 grade cable.

[0005] The fire-resistant B1 grade cable provided in this application adopts the following technical solution: A fire-resistant B1 grade cable includes a cable body, with a plurality of sheath tubes arranged along the length of the cable body sleeved on the outer side of the cable body. Adjacent sheath tubes are in contact with each other, and a locking tube is sleeved at the connection of adjacent sheath tubes. Several anti-theft bars are fixedly connected to the outer wall of each sheath tube and the outer wall of each locking tube. Each anti-theft bar is distributed in a wavy pattern, and each anti-theft bar in each circle is staggered with the anti-theft bars of the adjacent circles.

[0006] By adopting the above technical solution, multiple sheaths and locking tubes are sleeved on the outside of the cable body, providing protection for the cable. The anti-theft bars in each ring are distributed in a wavy pattern, and each bar in each ring is staggered with those in adjacent rings, making it difficult for someone intending to steal the cable to directly access the cable body. The wavy distribution increases the spatial undulation of the anti-theft bars, and the staggered arrangement further creates a complex obstruction structure between them, making it difficult for thieves to bypass or damage these bars to obtain the cable, thus increasing the difficulty of cable theft and effectively improving the cable's anti-theft performance.

[0007] Preferably, each of the sheath tubes has a raised ring at one end and an annular groove at the other end. Each raised ring is inserted into the corresponding annular groove, and the raised ring is bonded to the inner wall of the corresponding annular groove.

[0008] By adopting the above technical solution, based on the multiple sheaths sleeved on the outside of the cable body, the protruding ring at one end of the sheath is inserted and bonded to the annular groove at the other end, which can make the connection between adjacent sheaths tighter and more stable, and enhance the protective effect of the sheaths on the cable body.

[0009] Preferably, each end face of the sheath is designed as a wavy surface.

[0010] By adopting the above technical solution, each end face of the sheath tube is made into a wavy surface, which increases the contact area of ​​the sheath tube end faces, making the connection between adjacent sheath tubes tighter and more stable. At the same time, the wavy surface design can effectively limit the cutting tools from cutting the connection between the two sheath tubes, because the irregular shape of the wavy surface makes the cutting process more difficult, increasing the difficulty and time cost of cutting, thereby improving the safety and anti-theft performance of the cable.

[0011] Preferably, the cable body is provided with a plurality of filler strips on its periphery, and a fireproof protective layer tightly wrapping each filler strip is sleeved on the outside of the cable body.

[0012] By adopting the above technical solution, several filler strips are set around the cable body and a fireproof protective layer that tightly wraps the filler strips is sleeved on the outside, which can improve the fire resistance of the cable; at the same time, the several filler strips are tightly pressed against the cable body, which can restrict the cable body from being pulled out of the fireproof protective layer and enhance the stability of the cable structure.

[0013] Preferably, the fireproof protective layer has several limiting holes, and each sheath tube has several inserts on its inner sidewall, with each insert being inserted into a corresponding limiting hole.

[0014] By adopting the above technical solution, several limiting holes are opened on the fireproof protection layer, and several inserts are set on the inner side wall of the sheath tube and the inserts are inserted into the corresponding limiting holes. This can enhance the connection stability between the sheath tube and the fireproof protection layer, make the sheath tube more firmly fitted on the outside of the cable body, restrict the sheath tube from sliding or shifting on the cable body, and thus better protect the cable body. At the same time, it also helps to improve the integrity and reliability of the entire cable structure.

[0015] Preferably, each of the plugs is fixedly connected to the inner wall of the corresponding sheath tube, each of the anti-theft rods is a hollow rod, and the anti-theft rod corresponding to the plug position is provided with a connecting rope. One end of the connecting rope is fixedly connected to the inner wall of the anti-theft rod away from the sheath tube, and the other end is fixedly connected to the corresponding plug. The end of the plug near the cable body is set as a pointed end.

[0016] By adopting the above technical solution, when the anti-theft rod is cut, the connecting rope will break. Since there is a spring fixedly connected between the plug and the inner wall of the sheath, the plug will be inserted into several filler strips around the cable body by the tip of the plug near the cable body under the action of the spring force, thereby strengthening the connection between the protective sleeve, the fireproof protective layer and the filler strips.

[0017] Preferably, the locking tube includes two semi-circular tubes, one end of which is provided with a connecting rod, and the other end of which is provided with a connecting groove. Each connecting rod is inserted into a corresponding connecting groove. A receiving groove is formed on the side wall of the connecting groove near the sheath tube, and a connecting hole is formed on the side wall of the connecting groove away from the sheath tube. A connecting hole is formed on the connecting rod that is aligned with the corresponding connecting hole. One anti-theft rod is inserted into both the connecting hole and the corresponding connecting hole. An elastic block is fixedly connected to the end of the anti-theft rod near the sheath tube. The end of the elastic block near the sheath tube is a pointed tip, and the diameter of the end of the elastic block away from the pointed tip is larger than the diameter of the connecting hole and the diameter of the connecting hole.

[0018] By adopting the above technical solution, the locking tube consists of two semi-arc tubes. A connecting rod at one end of each semi-arc tube is inserted into a connecting slot at the other end, facilitating the installation and disassembly of the locking tube and improving installation efficiency. A connecting hole is opened on the side wall of the connecting slot away from the sheath tube, and a second connecting hole aligned with the first connecting hole is opened on the connecting rod. Anti-theft rods are simultaneously inserted into both the first and second connecting holes, further enhancing the connection strength between the two semi-arc tubes and preventing the locking tube from loosening. An elastic block is fixedly connected to the end of the anti-theft rod closest to the sheath tube. The end of the elastic block closest to the sheath tube is pointed, facilitating insertion into the first and second connecting holes. The diameter of the end of the elastic block away from the pointed end is larger than the diameter of the first and second connecting holes, providing a locking effect after insertion and preventing the anti-theft rod from falling out. This ensures the stability and reliability of the locking tube connection, thereby improving the overall protective performance of the cable.

[0019] Preferably, the cross-sectional shape of the anti-theft rod is non-circular.

[0020] By adopting the above technical solution, the cross-sectional shape of the anti-theft rod is non-circular, which can increase its contact friction with external objects and improve the anti-theft effect. At the same time, the non-circular shape can reduce the compatibility of stolen tools and further enhance the anti-theft performance of the cable.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This increases the difficulty of cable theft and effectively improves the anti-theft performance of the cable; The wavy surface design effectively limits the cutting tools from cutting the joint between the two sheaths; This ensures the stability and reliability of the locking tube connection, thereby improving the overall protection performance of the cable. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view illustrating the cable in an embodiment of this application.

[0023] Figure 2 This is a perspective view illustrating the cable in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram illustrating the structure of adjacent sheath tubes being separated from each other, as shown in the embodiments of this application.

[0025] Figure 4 This is a schematic diagram illustrating the structure of two semi-arc tubes spliced ​​together in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Cable body; 11. Filler strip; 12. Fireproof protective layer; 121. Restriction hole; 2. Sheath tube; 21. Raised ring; 22. Annular groove; 23. Insert block; 24. Spring; 25. Connecting rope; 3. Locking tube; 31. Semi-arc tube; 32. Connecting rod; 33. Connecting groove; 34. Receiving groove; 35. Connecting hole one; 36. Connecting hole two; 4. Anti-theft rod; 41. Elastic block. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] This application discloses a fire-resistant B1-grade cable. (Refer to...) Figure 1 and Figure 2 The fire-resistant B1 grade cable includes a cable body 1, multiple sheath tubes 2, and multiple locking tubes 3. The sheath tubes 2 are arranged along the length of the cable body 1 and fitted over the outside of the cable body 1. Adjacent sheath tubes 2 are in contact with and spliced ​​together. Each locking tube 3 is fitted over the junction of every two adjacent sheath tubes 2. Several turns of anti-theft rods 4 are fixedly connected to the outer wall of each sheath tube 2 and the outer wall of each locking tube 3. These turns of anti-theft rods 4 are evenly distributed along the length of the cable body 1, thus enhancing the cable's protection and anti-theft capabilities.

[0029] The sheath tube 2 provides physical protection for the cable body 1, the locking tube 3 enhances the stability of the sheath tube 2 connection, and the distribution of the anti-theft rod 4 effectively prevents thieves from damaging the sheath tube 2 and the locking tube 3, thereby stealing the cable body 1.

[0030] Multiple anti-theft rods 4 in each ring are distributed in a wavy pattern around the perimeter of the cable body 1, and each anti-theft rod 4 in each ring is staggered with the adjacent anti-theft rods 4 in the adjacent ring, that is, several are arranged along the length of the cable body 1. This distribution increases the difficulty for thieves to damage the sheath tube 2 and the locking tube 3, because it is difficult for them to avoid all the anti-theft rods 4 at the same time. At the same time, the wavy distribution of the anti-theft rods 4 can also disperse external forces to a certain extent, reducing damage to the sheath tube 2 and the cable body 1. The cross-section of each anti-theft rod 4 is not circular; in this embodiment, the cross-section of the anti-theft rod 4 is triangular.

[0031] Reference Figure 2 and Figure 3 Each sheath tube 2 has a raised ring 21 at one end and an annular groove 22 at the other end. Each raised ring 21 is inserted into the annular groove 22 on the adjacent sheath tube 2, and the raised ring 21 is bonded to the inner wall of the corresponding annular groove 22. This makes the connection between adjacent sheath tubes 2 tighter and more stable. Each end face of the sheath tube 2 is designed with a corrugated surface. The corrugated surface design increases the contact area between adjacent sheath tubes 2, further improving the strength of the connection, and making it difficult for a cutting knife to cut the connection between adjacent sheath tubes 2 in the event of theft.

[0032] Reference Figure 1 and Figure 2 The cable body 1 is the core part of the cable, used to transmit power or signals. Several filler strips 11 are provided around the periphery of the cable body 1. These filler strips 11, made of halogen-free, low-smoke, flame-retardant polyolefin materials, are used to fill the gaps around the cable body 1. The filler strips 11 are evenly distributed around the periphery of the cable body 1, with adjacent filler strips 11 in contact with each other, making the structure more compact. A fireproof protective layer 12 is fitted over the outside of the cable body 1, tightly wrapping each filler strip 11 and pressing it firmly against the outside of the cable body 1. Each sheath tube 2 is fitted over and tightly against the fireproof protective layer 12.

[0033] The fireproof protective layer 12 can be made of fireproof fiber material or fireproof coating material, which can effectively reduce the damage to the cable body 1 caused by fire.

[0034] To reinforce the connection between the fireproof protective layer 12 and the sheath tube 2, several limiting holes 121 are provided on the fireproof protective layer 12. Several inserts 23 are provided on the inner wall of each sheath tube 2, and each insert 23 is inserted into the corresponding limiting hole 121. A spring 24 is fixedly connected between the insert 23 and the inner wall of the corresponding sheath tube 2.

[0035] Each anti-theft rod 4 is a hollow rod. A connecting rope 25 is provided inside the anti-theft rod 4 corresponding to the position of the plug 23. One end of the connecting rope 25 is fixedly connected to the inner wall of the anti-theft rod 4 away from the sheath tube 2, and the other end is fixedly connected to the corresponding plug 23. The end of the plug 23 near the cable body 1 is set as a pointed end.

[0036] Under normal circumstances, the spring 24 is compressed, and the plug 23 is inserted into the limiting hole 121 to fix the sheath tube 2. When the thief damages the anti-theft bar 4, the anti-theft bar 4 breaks, and the connecting rope 25 also breaks. At this time, the plug 23 is further inserted into the limiting hole 121 under the action of the spring 24. The tip of the plug 23 is inserted into several filler strips 11 to enhance the connection between the sheath tube 2 and the fireproof protection layer 12 and the filler strips 11, thereby better protecting the cable body 1.

[0037] Reference Figure 2 and Figure 4 The locking tube 3 is used to strengthen the connection between adjacent sheath tubes 2. The locking tube 3 includes two interlocking semi-arc tubes 31. Each semi-arc tube 31 has a connecting rod 32 at one end and a connecting groove 33 at the other end. Each connecting rod 32 is inserted into the connecting groove 33 on the adjacent semi-arc tube 31.

[0038] A receiving groove 34 is formed on the side wall of the connecting groove 33 near the sheath tube 2, and a connecting hole 35 is formed on the side wall of the connecting groove 33 away from the sheath tube 2. Each connecting rod 32 has a connecting hole 36 aligned with the corresponding connecting hole 35. One anti-theft rod 4 is inserted into both the connecting hole 35 and the corresponding connecting hole 36. An elastic block 41 is fixedly connected to the end of the anti-theft rod 4 near the sheath tube 2. The elastic block 41 is conical, with a pointed end near the sheath tube 2. The elastic block 41 is inserted into the receiving groove 34. The diameter of the end of the elastic block 41 away from the pointed end is larger than the diameter of the connecting hole 35 and the diameter of the connecting hole 36.

[0039] When the anti-theft rod 4 is inserted, the tip of the elastic block 41 first passes through the connecting hole 35 and the connecting hole 36. Then the elastic block 41 is squeezed and deformed through, and its elastic restoring force is used to lock it in the receiving groove 34, thereby locking the connection between the locking tube 3 and the adjacent sheath tube 2, ensuring the stability of the connection of the sheath tube 2.

[0040] The implementation principle of a fire-resistant B1-grade cable in this embodiment is as follows: By setting up structures such as the sheath tube 2, locking tube 3, and anti-theft rod 4, the protection and anti-theft capabilities of the cable body 1 are greatly enhanced. The sheath tube 2 and the fireproof protective layer 12 provide multiple protections for the cable body 1, limiting the cable body 1 from external physical damage and chemical corrosion. The locking tube 3 strengthens the connection between the sheath tubes 2, making the entire protective structure more stable. The special distribution of the anti-theft rod 4 and its linkage design with the plug 23 effectively prevent thieves from damaging and stealing the cable. Compared with traditional cable protection methods, it has significant advantages, improves the safety and reliability of the cable, reduces the risk of cable theft and damage, and ensures the normal operation of the power system and the accurate transmission of information.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fire-resistant B1 grade cable, characterized in that: The cable body (1) is covered with a plurality of sheath tubes (2) arranged along the length of the cable body (1). Adjacent sheath tubes (2) are in contact with each other and locking tubes (3) are fitted at the connection of adjacent sheath tubes (2). Several anti-theft rods (4) are fixedly connected to the outer wall of each sheath tube (2) and the outer wall of each locking tube (3). Each anti-theft rod (4) is distributed in a wave shape, and each anti-theft rod (4) in each circle is staggered with the anti-theft rods (4) of the adjacent circle.

2. The fire-resistant B1 grade cable according to claim 1, characterized in that: Each of the sheath tubes (2) has a raised ring (21) at one end and an annular groove (22) at the other end. Each raised ring (21) is inserted into the corresponding annular groove (22) and the raised ring (21) is bonded to the inner wall of the corresponding annular groove (22).

3. A fire-resistant B1 grade cable according to claim 2, characterized in that: Each end face of the sheath tube (2) is designed as a wavy surface.

4. A fire-resistant B1 grade cable according to claim 1, characterized in that: The cable body (1) has several filler strips (11) around its periphery, and a fireproof protective layer (12) tightly wraps around each filler strip (11) on the outside of the cable body (1).

5. A fire-resistant B1 grade cable according to claim 4, characterized in that: The fireproof protective layer (12) has several limiting holes (121), and each of the sheath tubes (2) has several inserts (23) on its inner sidewall. Each insert (23) is inserted into the corresponding limiting hole (121).

6. A fire-resistant B1 grade cable according to claim 5, characterized in that: Each of the plugs (23) is fixedly connected to the inner wall of the corresponding sheath (2). Each of the anti-theft rods (4) is a hollow rod. The anti-theft rod (4) corresponding to the position of the plug (23) is provided with a connecting rope (25). One end of the connecting rope (25) is fixedly connected to an inner wall of the anti-theft rod (4) away from the sheath (2), and the other end is fixedly connected to the corresponding plug (23). The end of the plug (23) near the cable body (1) is set as a pointed tip.

7. A fire-resistant B1 grade cable according to claim 1, characterized in that: The locking tube (3) includes two semi-arc tubes (31). One end of each semi-arc tube (31) is provided with a connecting rod (32), and the other end of each semi-arc tube (31) is provided with a connecting groove (33). Each connecting rod (32) is inserted into a corresponding connecting groove (33). A receiving groove (34) is provided on the side wall of the connecting groove (33) near the sheath tube (2), and a connecting hole (35) is provided on the side wall of the connecting groove (33) away from the sheath tube (2). A connecting rod (32) is provided with... A connecting hole (36) is aligned with the corresponding connecting hole (35). One of the anti-theft rods (4) is inserted into the connecting hole (35) and the corresponding connecting hole (36) at the same time. An elastic block (41) is fixedly connected to the end of the anti-theft rod (4) near the sheath tube (2). The end of the elastic block (41) near the sheath tube (2) is a pointed end. The diameter of the end of the elastic block (41) away from the pointed end is greater than the diameter of the connecting hole (35) and the diameter of the connecting hole (36).

8. A fire-resistant B1 grade cable according to claim 1, characterized in that: The cross-sectional shape of the anti-theft rod (4) is non-circular.

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