Low-smoke halogen-free cable with high flame retardance

Abstract

The utility model relates to the technical field of flame-retardant cables, in particular to a low-smoke halogen-free cable with strong flame retardance. Comprising a protective sleeve, two clamping assemblies are installed in the protective sleeve, the two clamping assemblies are symmetrically arranged with the center line of the protective sleeve as the center, a cable is installed between the two clamping assemblies, and a fixing assembly is installed on the outer wall of the protective sleeve; the clamping assembly comprises multiple sets of moving grooves, the multiple sets of moving grooves are formed in the inner wall of the protective sleeve, and the multiple sets of moving grooves are annularly arranged at equal intervals with the central axis of the protective sleeve as the center. According to the utility model, through the arrangement of the clamping assembly, the protective sleeve clamps and fixes a cable through the clamping plate, the contact area between the protective sleeve and the cable is reduced, and heat dissipation is carried out on the surface of the cable through the heat dissipation grooves in the clamping plate, so that heat in the cable is reduced, and the cable is not easy to generate high temperature or short circuit; and the service life and the safety of the cable are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flame-retardant cables, and particularly relates to a low-smoke halogen-free cable with strong flame retardancy. Background Art

[0002] Low smoke halogen-free cable is a material classification for wire sheath in the wire and cable industry. Low smoke halogen-free wire sheath is made of thermoplastic or thermosetting material that emits low smoke when heated and does not contain halogen. It can be used in the railway industry or shipbuilding industry.

[0003] After searching, in the prior art, Chinese patent application number: CN202223402107.8 discloses a low-smoke halogen-free flame-retardant cable, including a cable line, a protective sleeve is fixedly installed on the surface of the cable line by bolts, a concave sleeve is fixedly connected to the top of the protective sleeve, a sleeve is hinged on the right side of the protective sleeve through a shaft rod and a shaft sleeve, a tooth plate is arranged on the left side of the top of the concave sleeve, the bottom end of the tooth plate penetrates into the interior of the concave sleeve, the interior of the concave sleeve is movably connected with a tooth rod through a bearing, the tooth rod is meshed with the tooth plate, and a spring piece 1 is fixedly connected to the bottom of the inner wall of the concave sleeve. The utility model uses the concave sleeve to suspend and position the cable line through the sleeve and the external installation hanging rod, and then the sleeve is fixed by the tooth plate and the spring piece 1 through the tooth rod and the card plate, so as to achieve the advantages of convenient suspension installation, good stability, and not easy to fall due to accidental contact with foreign objects, thereby improving the stability of the low-smoke halogen-free flame-retardant cable.

[0004] However, the device still has the following defects:

[0005] The device protects the cable by means of a protective cover, wherein the protective cover is attached to the surface of the cable, resulting in poor heat dissipation of the cable inside the protective cover. Under extreme working conditions, the cable is prone to high temperature or short circuit when transmitting electricity, thereby reducing the service life of the cable and even causing a fire. Summary of the invention

[0006] In view of the above problems, the utility model provides a low-smoke halogen-free cable with strong flame retardancy. It comprises a protective sleeve, two groups of clamping components are installed in the protective sleeve, the two groups of clamping components are symmetrically arranged with the center line of the protective sleeve as the center, a cable is installed between the two groups of clamping components, and a fixing component is installed on the outer wall of the protective sleeve;

[0007] The clamping assembly includes multiple groups of movable grooves, multiple groups of movable grooves are provided on the inner wall of the protective sleeve, and the multiple groups of movable grooves are equidistantly arranged in a ring around the central axis of the protective sleeve. Telescopic rods are installed in the multiple groups of movable grooves, and movable plates are installed on the output ends of the multiple groups of telescopic rods. Connecting rods are installed at the ends of the multiple groups of movable plates away from the telescopic rods, and splints are installed at the ends of the multiple groups of connecting rods away from the movable plates. The splints are in an arc-shaped structure, and multiple groups of heat dissipation grooves are provided on the side of the splint away from the connecting rod, and the multiple groups of heat dissipation grooves are equidistantly arranged.

[0008] Furthermore, the multiple groups of telescopic rods are all sleeved with first springs, one ends of the multiple groups of first springs are respectively installed in the multiple groups of moving grooves, and the other ends of the multiple groups of first springs are respectively installed on the multiple groups of moving plates.

[0009] Furthermore, the fixing assembly includes a first connecting block, the first connecting block is mounted on the protective sleeve, and a limiting block is mounted on the first connecting block.

[0010] Furthermore, a second spring is installed in the first connecting block, a rack is installed at one end of the second spring, an end of the rack away from the second spring passes through the outside of the first connecting block, and a pull plate is installed at one end of the first connecting block away from the rack.

[0011] Furthermore, a gear rod is rotatably connected in the first connecting block, the gear rod is meshed with the rack, a clamping plate is installed on the gear rod, and one end of the clamping plate passes through the limiting block.

[0012] Furthermore, the fixing assembly also includes a second connecting block, which is installed in the protective sleeve. A connecting groove is opened in the second connecting block, and a clamping sleeve is rotatably connected in the connecting groove. One end of the clamping sleeve is clamped in the limit block.

[0013] Furthermore, a second spring is installed in the connecting groove, and one end of the second spring is installed on the clamping sleeve.

[0014] Furthermore, a card slot is provided at one end of the card sleeve close to the limit block, and the card slot is used in conjunction with the card plate.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a clamping component, and the protective sleeve clamps and fixes the cable through the clamping plate, thereby reducing the contact area between the protective sleeve and the cable. At the same time, the heat dissipation grooves on the clamping plate are used to dissipate the heat on the surface of the cable, thereby reducing the heat in the cable, making it less likely for the cable to generate high temperature or short circuit, and improving the service life and safety of the cable.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure according to an embodiment of the utility model is shown;

[0020] Figure 2 A schematic diagram of the structure of a clamping assembly according to an embodiment of the utility model is shown;

[0021] Figure 3 A schematic diagram of a splint structure according to an embodiment of the utility model is shown.

[0022] In the figure: 110, protective cover; 120, cable; 210, movable slot; 220, telescopic rod; 230, first spring; 240, movable plate; 250, connecting rod; 260, clamping plate; 270, heat dissipation slot; 310, first connecting block; 320, spring; 330, rack; 340, pull plate; 350, gear rod; 360, clamping plate; 370, limit block; 380, second connecting block; 381, connecting slot; 382, ​​second spring; 390, clamping sleeve; 391, clamping slot. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0024] See also Figure 1-3The utility model provides a technical solution: a low-smoke halogen-free cable with strong flame retardancy. It includes a protective sleeve 110, two groups of clamping components are installed in the protective sleeve 110, the two groups of clamping components are symmetrically arranged with the center line of the protective sleeve 110 as the center, a cable 120 is installed between the two groups of clamping components, and a fixing component is installed on the outer wall of the protective sleeve 110;

[0025] The clamping assembly includes multiple groups of movable grooves 210, multiple groups of movable grooves 210 are opened on the inner wall of the protective sleeve 110, and the multiple groups of movable grooves 210 are arranged equidistantly in a ring with the central axis of the protective sleeve 110 as the center. Telescopic rods 220 are installed in the multiple groups of movable grooves 210, and movable plates 240 are installed on the output ends of the multiple groups of telescopic rods 220. Connecting rods 250 are installed on the ends of the multiple groups of movable plates 240 away from the telescopic rods 220. Clamps 260 are installed on the ends of the multiple groups of connecting rods 250 away from the movable plates 240. The clamps 260 are in an arc-shaped structure. Multiple groups of heat dissipation grooves 270 are opened on the side of the clamps 260 away from the connecting rods 250, and the multiple groups of heat dissipation grooves 270 are arranged equidistantly.

[0026] Two groups of clamps 260 are provided to clamp and fix the cable 120, thereby reducing the contact area between the protective cover 110 and the cable 120. At the same time, a plurality of heat dissipation grooves 270 are provided on the clamps 260, thereby further reducing the contact area with the cable 120, improving the heat dissipation effect of the cable 120, and making it less likely for the cable 120 to generate high temperature or short circuit.

[0027] The clamping plate 260 clamps and fixes the cable 120 through the first spring 230 , the telescopic rod 220 , the movable plate 240 and the connecting rod 250 , so that the clamping plate 260 can fix cables 120 of different sizes, thereby improving the flexibility of the protective cover 110 .

[0028] The multiple sets of telescopic rods 220 are sleeved with first springs 230 , one ends of the multiple sets of first springs 230 are respectively installed in the multiple sets of moving grooves 210 , and the other ends of the multiple sets of first springs 230 are respectively installed on the multiple sets of moving plates 240 .

[0029] The fixing assembly includes a first connection block 310 , which is mounted on the protective sleeve 110 , and a limiting block 370 is mounted on the first connection block 310 .

[0030] A spring 320 is installed in the first connecting block 310, a rack 330 is installed at one end of the spring 320, and the end of the rack 330 away from the spring 320 penetrates to the outside of the first connecting block 310. A pull plate 340 is installed at the end of the first connecting block 310 away from the rack 330.

[0031] A gear rod 350 is rotatably connected in the first connection block 310 . The gear rod 350 is meshed with the rack 330 . A clamping plate 360 ​​is installed on the gear rod 350 . One end of the clamping plate 360 ​​passes through the limiting block 370 .

[0032] The fixing assembly also includes a second connecting block 380 , which is installed in the protective sleeve 110 . A connecting groove 381 is defined in the second connecting block 380 . A clamping sleeve 390 is rotatably connected in the connecting groove 381 . One end of the clamping sleeve 390 is clamped in the limiting block 370 .

[0033] A second spring 382 is installed in the connecting groove 381 , and one end of the second spring 382 is installed on the clamping sleeve 390 .

[0034] A card slot 391 is formed at one end of the card sleeve 390 close to the limiting block 370 , and the card slot 391 is used in conjunction with the card plate 360 ​​.

[0035] The pull plate 340 is used to drive the rack 330 to move, so that the rack 330 drives the gear rod 350 to rotate, thereby separating the clamping plate 360 ​​and the clamping slot 391, contacting the limit of the clamping sleeve 390, and facilitating the installation of the protective sleeve 110.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-smoke halogen-free cable with strong flame retardancy, characterized by: It comprises a protective sleeve (110), wherein two groups of clamping components are installed in the protective sleeve (110), the two groups of clamping components are symmetrically arranged with the center line of the protective sleeve (110) as the center, a cable (120) is installed between the two groups of clamping components, and a fixing component is installed on the outer wall of the protective sleeve (110); The clamping assembly comprises a plurality of groups of movable grooves (210), the inner wall of the protective sleeve (110) is provided with a plurality of groups of movable grooves (210), the plurality of groups of movable grooves (210) are arranged in a circular manner with the central axis of the protective sleeve (110) as the center, a telescopic rod (220) is installed in each of the plurality of groups of movable grooves (210), a movable plate (240) is installed on the output end of each of the plurality of groups of telescopic rods (220), a connecting rod (250) is installed at one end of each of the plurality of groups of movable plates (240) away from the telescopic rod (220), a clamping plate (260) is installed at one end of each of the plurality of groups of connecting rods (250) away from the movable plate (240), the clamping plate (260) is in an arc-shaped structure, a plurality of groups of heat dissipation grooves (270) are arranged on a side of the clamping plate (260) away from the connecting rod (250), and the plurality of groups of heat dissipation grooves (270) are arranged at equal distances.

2. A flame retardant low-smoke halogen-free cable according to claim 1, characterized in that: A first spring (230) is sleeved on each of the multiple sets of telescopic rods (220), one end of each of the multiple sets of first springs (230) is respectively mounted in each of the multiple sets of movable grooves (210), and the other end of each of the multiple sets of first springs (230) is respectively mounted on each of the multiple sets of movable plates (240).

3. A low-smoke halogen-free cable with strong flame retardancy according to claim 2, characterized in that: The fixing assembly comprises a first connection block (310), wherein the first connection block (310) is mounted on the protective sleeve (110), and a limit block (370) is mounted on the first connection block (310).

4. A flame retardant low-smoke halogen-free cable according to claim 3, characterized in that: A spring (320) is installed in the first connecting block (310), a rack (330) is installed at one end of the spring (320), an end of the rack (330) away from the spring (320) passes through the outside of the first connecting block (310), and a pull plate (340) is installed at one end of the first connecting block (310) away from the rack (330).

5. A flame retardant low-smoke halogen-free cable according to claim 4, characterized in that: A gear rod (350) is rotatably connected inside the first connection block (310), the gear rod (350) is meshed with the rack (330), a clamping plate (360) is mounted on the gear rod (350), and one end of the clamping plate (360) passes through the limit block (370).

6. A flame retardant low-smoke halogen-free cable according to claim 5, characterized in that: The fixing assembly further comprises a second connecting block (380), the second connecting block (380) being mounted on the protective sleeve (110), a connecting groove (381) being provided in the second connecting block (380), a clamping sleeve (390) being rotatably connected in the connecting groove (381), and one end of the clamping sleeve (390) being clamped in the limiting block (370).

7. A flame retardant low-smoke halogen-free cable according to claim 6, characterized in that: A second spring (382) is installed in the connecting groove (381), and one end of the second spring (382) is installed on the clamping sleeve (390).

8. A low-smoke halogen-free cable with strong flame retardancy according to claim 7, characterized in that: A clamping groove (391) is formed at one end of the clamping sleeve (390) close to the limiting block (370), and the clamping groove (391) is used in conjunction with the clamping plate (360).

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